diff --git a/Button.cpp b/Button.cpp new file mode 100644 index 0000000..754d5d7 --- /dev/null +++ b/Button.cpp @@ -0,0 +1,76 @@ +#include "Button.h" +#include +#include "Util.h" +#include "Vector.h" +#include "Cursor.h" + +Button::Button(const std::string & text, Vec2f position, float width, float height) : Text(text,position) +{ + this->width = width; + this->height = height; + this->planePosition = position; + + cursorOnButton = false; + alfa = 0.5f; + background = Vec3f(10, 10, 10); + //foreground = Vec3f(255, 255, 255); + this->setColor(Vec3f(255, 255, 255)); + + this->position.x += width / 2 - textWidth / 2; + this->position.y += height / 2 - textHeight / 2; +} + +Button::~Button() +{ + /*if (action != nullptr) + delete action;*/ +} + +void Button::draw(void) +{ + + glColor4f(background.x/255.0f, background.y / 255.0f, background.z / 255.0f, alfa); + + glBegin(GL_QUADS); + glVertex2f(planePosition.x, planePosition.y); + glVertex2f(planePosition.x, planePosition.y + height); + glVertex2f(planePosition.x + width, planePosition.y + height); + glVertex2f(planePosition.x + width, planePosition.y); + glEnd(); + + /*glColor4f(foreground.x / 255.0f, foreground.y / 255.0f, foreground.z / 255.0f, 1.0f); + Util::glutBitmapString(text, position.x, position.y+height/2+14/2);*/ + Text::draw(); +} + +void Button::update(int x, int y) +{ + cursorOnButton = + (x > planePosition.x && x < planePosition.x + width) && + y > planePosition.y && y < planePosition.y + height; + + + if (cursorOnButton) + alfa = 1.0f; + else + alfa = 0.5f; + + if (cursorOnButton && Cursor::getInstance()->clicked) + if(action != nullptr) + action(this); +} + +void Button::addAction(action_function action) +{ + this->action = action; +} + +void Button::setForeground(Vec3f color) +{ + this->setColor(color); +} + +void Button::setBackground(Vec3f color) +{ + background = color; +} diff --git a/Button.h b/Button.h new file mode 100644 index 0000000..da8fcf3 --- /dev/null +++ b/Button.h @@ -0,0 +1,30 @@ +#pragma once +#include "Text.h" + + + +class Button : public Text +{ +private: + typedef void(*action_function)(Button* b); + float width, height; + Vec3f background; + Vec2f planePosition; + bool cursorOnButton; + float alfa; + action_function action = nullptr; +public: + Button(const std::string &text, Vec2f position, float width, float height); + ~Button(); + + + + void draw(); + void update(int x, int y); + + void addAction(action_function action); + + void setForeground(Vec3f color); + void setBackground(Vec3f color); +}; + diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..0cea94d --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,17 @@ +cmake_minimum_required(VERSION 3.5) +project(CrystalPoint) + +file(GLOB_RECURSE SOURCE_FILES + "*.h" + "*.cpp" + "*.cc" + ) + +add_executable(CrystalPoint ${SOURCE_FILES}) + +find_package(OpenGL REQUIRED) +find_package(GLUT REQUIRED) +find_package(OpenAL REQUIRED) +include_directories( ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS} ${OPENAL_INCLUDE_DIRS} ) +target_link_libraries(CrystalPoint ${OPENGL_LIBRARIES} ${GLUT_LIBRARY} ${OPENAL_LIBRARY} ) +set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -lpthread") \ No newline at end of file diff --git a/Cursor.cpp b/Cursor.cpp new file mode 100644 index 0000000..40db317 --- /dev/null +++ b/Cursor.cpp @@ -0,0 +1,80 @@ +#include "Cursor.h" +#include +#include +#include "Racer.h" + +Cursor* Cursor::instance = NULL; + +Cursor::Cursor() +{ + enabled = false; + mousePosition = Vec2f(Racer::width / 2, Racer::height / 2); + clicked = false; +} + +Cursor::~Cursor() +{ + +} + +Cursor* Cursor::getInstance(void) +{ + if (instance == nullptr) + instance = new Cursor(); + + return instance; +} + +void Cursor::enable(bool enable) +{ + enabled = enable; +} + +bool Cursor::isEnabled(void) +{ + return enabled; +} + +void Cursor::draw(void) +{ + //Draw Cursor + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, Racer::width, Racer::height, 0, -10, 10); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + glDisable(GL_LIGHTING); + glDisable(GL_DEPTH_TEST); + glColor4f(1, cos(glutGet(GLUT_ELAPSED_TIME) / 1000.0f), sin(glutGet(GLUT_ELAPSED_TIME) / 1000.0f), 1); + + glBegin(GL_TRIANGLES); + glVertex2f(mousePosition.x, mousePosition.y); + glVertex2f(mousePosition.x + 15, mousePosition.y + 15); + glVertex2f(mousePosition.x + 5, mousePosition.y + 20); + glEnd(); +} + +void Cursor::update(Vec2f newPosition) +{ + if (newPosition.x < 0) + newPosition.x = 0; + + if (newPosition.y < 0) + newPosition.y = 0; + + if (newPosition.x > Racer::width) + newPosition.x = Racer::width; + + if (newPosition.y > Racer::height) + newPosition.y = Racer::height; + + mousePosition = newPosition; + + if (clicked) + clicked = !clicked; + if (state != prev) + if(state == GLUT_UP) + clicked = true; + prev = state; +} diff --git a/Cursor.h b/Cursor.h new file mode 100644 index 0000000..b60ab82 --- /dev/null +++ b/Cursor.h @@ -0,0 +1,28 @@ +#pragma once +#include "Vector.h" + +class Cursor +{ +private: + Cursor(); + + static Cursor* instance; + bool enabled; + +public: + Vec2f mousePosition; + ~Cursor(); + + static Cursor* getInstance(void); + + void enable(bool enable); + bool isEnabled(void); + + bool clicked; + int state, prev; + + + void draw(void); + void update(Vec2f newPosition); +}; + diff --git a/Entity.cpp b/Entity.cpp new file mode 100644 index 0000000..1eee851 --- /dev/null +++ b/Entity.cpp @@ -0,0 +1,51 @@ +#include "Entity.h" +#include "cmath" +#include +#include "Model.h" + + +Entity::Entity() +{ + model = NULL; + scale = 1; + canCollide = true; +} + + +Entity::~Entity() +{ + if(model) + Model::unload(model); +} + + +void Entity::draw() +{ + if (model) + { + glPushMatrix(); + + glTranslatef(position.x, position.y, position.z); + glRotatef(rotation.x, 1, 0, 0); + glRotatef(rotation.y, 0, 1, 0); + glRotatef(rotation.z, 0, 0, 1); + glScalef(scale, scale, scale); + + model->draw(); + + glPopMatrix(); + } + +} + +bool Entity::inObject(const Vec3f & point) +{ + if (!model) + return false; + Vec3f center = position + model->center; + float distance = ((point.x - center.x) * (point.x - center.x) + (point.z - center.z)*(point.z - center.z)); + if (distance < model->radius*scale*model->radius*scale) + return true; + return false; +} + diff --git a/Entity.h b/Entity.h new file mode 100644 index 0000000..82dccbd --- /dev/null +++ b/Entity.h @@ -0,0 +1,25 @@ +#pragma once + +#include "Vector.h" +class Model; + +class Entity +{ +public: + Entity(); + ~Entity(); + + Model* model; + + virtual void draw(); + virtual void update(float elapsedTime) {}; + virtual void collide() {}; + + Vec3f position; + Vec3f rotation; + float scale; + + bool canCollide; + bool inObject(const Vec3f &position); +}; + diff --git a/HeightMap.cpp b/HeightMap.cpp new file mode 100644 index 0000000..8da4d80 --- /dev/null +++ b/HeightMap.cpp @@ -0,0 +1,192 @@ +#include "HeightMap.h" +#include "stb_image.h" +#include "Vector.h" + +#include "LevelObject.h" + +#include +#include +#include +#include "World.h" + +#define RED 0 +#define GREEN 1 +#define BLUE 2 +#define ALPHA 3 + +HeightMap::HeightMap(const std::string &file, World* world) +{ + int bpp; + unsigned char* imgData = stbi_load(file.c_str(), &width, &height, &bpp, 4); + + auto heightAt = [&](int x, int y) + { + return (imgData[(x + y * width) * 4 ] / 256.0f) * 10.0f; + }; + + auto valueAt = [&](int x, int y, int offset = 0) + { + return imgData[(x + y * width) * 4 + offset]; + }; + + std::vector> faceNormals(width-1, std::vector(height-1, Vec3f(0,1,0))); + for (int y = 0; y < height - 1; y++) + { + for (int x = 0; x < width - 1; x++) + { + int offsets[4][2] = { { 0, 0 },{ 1, 0 },{ 1, 1 },{ 0, 1 } }; + Vec3f ca(0, heightAt(x, y + 1) - heightAt(x, y), 1); + Vec3f ba(1, heightAt(x + 1, y) - heightAt(x, y), 0); + Vec3f normal = ca.cross(ba); + normal.Normalize(); + faceNormals[x][y] = normal; + } + } + + for (int y = 0; y < height-1; y++) + { + for (int x = 0; x < width-1; x++) + { + int offsets[4][2] = { { 0, 0 },{ 1, 0 },{ 1, 1 },{ 0, 1 } }; + + if (valueAt(x, y, GREEN) > 5) + { + ObjectTemplate obtp = world->getObjectFromValue(valueAt(x, y, GREEN)); + LevelObject* p = new LevelObject(obtp.file, Vec3f(x, heightAt(x, y), y), obtp.rotation, obtp.scale, obtp.canCollide); + + world->addLevelObject(p); + } + if (valueAt(x, y, BLUE) > 10) + { + world->addStar(new Star(Vec3f(x, heightAt(x, y), y))); + } + + for (int i = 0; i < 4; i++) + { + int xx = x + offsets[i][0]; + int yy = y + offsets[i][1]; + + Vec3f normal(0, 0, 0); + if(xx < width-1 && yy < height-1) + normal = normal + faceNormals[xx][yy]; + if(xx > 0 && yy < height-1) + normal = normal + faceNormals[xx-1][yy]; + if (xx > 0 && yy > 0) + normal = normal + faceNormals[xx-1][yy-1]; + if (yy > 0 && xx < width-1) + normal = normal + faceNormals[xx][yy-1]; + normal.Normalize(); + + float h = heightAt(xx, yy); + vertices.push_back(Vertex{ (float)(xx), h, (float)(yy), + normal.x, normal.y, normal.z, + (xx) / (float)height, (yy) / (float)width } ); + } + } + } + + glGenTextures(1, &imageIndex); + glBindTexture(GL_TEXTURE_2D, imageIndex); + + glTexImage2D(GL_TEXTURE_2D, + 0, //level + GL_RGBA, //internal format + width, //width + height, //height + 0, //border + GL_RGBA, //data format + GL_UNSIGNED_BYTE, //data type + imgData); //data + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + + stbi_image_free(imgData); +} + +HeightMap::~HeightMap() +{ + glDeleteTextures(1, &imageIndex); +} + +void HeightMap::Draw() +{ + glEnable(GL_LIGHTING); + float color[] = { 0.7f, 0.7f, 0.7f, 1 }; + glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color); + glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color); + + glEnable(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, imageIndex); + + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + //glEnableClientState(GL_COLOR_ARRAY); + glEnableClientState(GL_NORMAL_ARRAY); + + glVertexPointer(3, GL_FLOAT, sizeof(Vertex), ((float*)vertices.data()) + 0); + glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), ((float*)vertices.data()) + 6); + glNormalPointer(GL_FLOAT, sizeof(Vertex), ((float*)vertices.data()) + 3); + glDrawArrays(GL_QUADS, 0, vertices.size()); + + glDisableClientState(GL_VERTEX_ARRAY); + glDisableClientState(GL_TEXTURE_COORD_ARRAY); + //glDisableClientState(GL_COLOR_ARRAY); + glDisableClientState(GL_NORMAL_ARRAY); +} + +float HeightMap::GetHeight(float x, float y) +{ + int ix = x; + int iy = y; + + int index = (ix + (width - 1) * iy) * 4; + + if (index + 3 >= vertices.size()) + index = vertices.size() - 4; + + if (index < 0) + index = 0; + + Vertex& a = vertices[index]; + Vertex& b = vertices[index+1]; + Vertex& c = vertices[index+3]; + + float lowervalue = ((b.z - c.z)*(a.x - c.x) + (c.x - b.x)*(a.z - c.z)); + float labda1 = ((b.z - c.z)*(x - c.x) + (c.x - b.x)*(y - c.z)) / lowervalue; + float labda2 = ((c.y - a.y)*(x - c.x) + (a.x - c.x)*(y - c.y)) / lowervalue; + float labda3 = 1 - labda1 - labda2; + + Vertex z = a * labda1 + b * labda2 + c * labda3; +// Vertex z = (a * labda1) + (b * labda2) ; + + return z.y; +} + + +int HeightMap::GetSize() +{ + return height >= width ? height : width; +} + +void HeightMap::SetTexture(const std::string &file) +{ + int bpp, width2, height2; + stbi_set_flip_vertically_on_load(true); + unsigned char* imgData = stbi_load(file.c_str(), &width2, &height2, &bpp, 4); + + glBindTexture(GL_TEXTURE_2D, imageIndex); + + glTexImage2D(GL_TEXTURE_2D, + 0, //level + GL_RGBA, //internal format + width2, //width + height2, //height + 0, //border + GL_RGBA, //data format + GL_UNSIGNED_BYTE, //data type + imgData); //data + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + + stbi_image_free(imgData); +} \ No newline at end of file diff --git a/HeightMap.h b/HeightMap.h new file mode 100644 index 0000000..1fb1eb9 --- /dev/null +++ b/HeightMap.h @@ -0,0 +1,28 @@ +#pragma once +#include "Vertex.h" + +#include +#include +#include + +class World; + +class HeightMap +{ +private: + int height; + int width; + + GLuint imageIndex; +public: + HeightMap(const std::string &file, World* world); + ~HeightMap(); + + void Draw(); + float GetHeight(float x, float y); + int GetSize(); + void SetTexture(const std::string &file); + + std::vector vertices; +}; + diff --git a/Interface.cpp b/Interface.cpp new file mode 100644 index 0000000..bcda9d9 --- /dev/null +++ b/Interface.cpp @@ -0,0 +1,79 @@ +#include "Interface.h" +#include +#include "Racer.h" + +#include + +#include "Player.h" +#include "Util.h" + +Interface::Interface() +{ +} + +Interface::Interface(int stars) +{ + this->stars = stars; +} + + +Interface::~Interface() +{ +} + +void Interface::draw() +{ + Player* player = Player::getInstance(); + + //Switch view to Ortho + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, 1000, 1000, 0, -10, 10); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + glDisable(GL_LIGHTING); + glDisable(GL_DEPTH_TEST); + glDisable(GL_TEXTURE_2D); + + //Draw interface + + //Stars bar + glBegin(GL_QUADS); + glColor4f(0, 0, 0, 1.0); + glVertex2f(250, 980); + glVertex2f(250, 965); + glVertex2f(750, 965); + glVertex2f(750, 980); + glEnd(); + + glBegin(GL_QUADS); + + if(player->speed == 20) + glColor4f(1.0f, 0.1f, 0.1f, 1.0); + else + glColor4f(1.0f, 1.0f, 0.1f, 1.0); + glVertex2f(250, 980); + glVertex2f(250, 965); + + glColor4f(1.0f, 1.0f, 0.5f, 1.0); + glVertex2f(250 + ((player->stars / (float)stars) * 500), 965); + glVertex2f(250 + ((player->stars / (float)stars) * 500), 980); + glEnd(); + + //Text: level + glColor4f(1.0f, 1.0f, 0.1f, 1.0); + Util::glutBitmapString("Stars: " + std::to_string(player->stars) + " / " + std::to_string(stars), 480, 940); + + //Text: weapons + //Util::glutBitmapString(player->leftWeapon->name, 850, 900); + //Util::glutBitmapString(player->rightWeapon->name, 10, 900); + + glEnable(GL_LIGHTING); + glEnable(GL_DEPTH_TEST); +} + +void Interface::update(float deltaTime) +{ + +} \ No newline at end of file diff --git a/Interface.h b/Interface.h new file mode 100644 index 0000000..f5a59b6 --- /dev/null +++ b/Interface.h @@ -0,0 +1,14 @@ +#pragma once +class Interface +{ +private: + int stars; +public: + Interface(); + Interface(int); + ~Interface(); + + void draw(void); + void update(float deltaTime); +}; + diff --git a/LevelObject.cpp b/LevelObject.cpp new file mode 100644 index 0000000..c76db85 --- /dev/null +++ b/LevelObject.cpp @@ -0,0 +1,22 @@ +#include "LevelObject.h" + +#include "Model.h" + + +LevelObject::LevelObject(const std::string &fileName, const Vec3f &position, const Vec3f &rotation, const float &scale, const bool &hasCollision) +{ + model = Model::load(fileName); + this->position = position; + this->position.x -= model->center.x; + this->position.z -= model->center.z; + this->rotation = rotation; + this->scale = scale; + this->canCollide = hasCollision; +} + + +LevelObject::~LevelObject() +{ + if (model) + Model::unload(model); +} diff --git a/LevelObject.h b/LevelObject.h new file mode 100644 index 0000000..c5f4e3b --- /dev/null +++ b/LevelObject.h @@ -0,0 +1,17 @@ +#pragma once + +#include "Entity.h" +#include + + +class LevelObject : public Entity +{ +public: + LevelObject(const std::string &fileName, + const Vec3f &position, + const Vec3f &rotation, + const float &scale, + const bool &hasCollision); + ~LevelObject(); +}; + diff --git a/Main.cpp b/Main.cpp new file mode 100644 index 0000000..28d1723 --- /dev/null +++ b/Main.cpp @@ -0,0 +1,107 @@ +#include + +#include "Racer.h" +#include +#include "Vector.h" + +#define STB_IMAGE_IMPLEMENTATION +#include "stb_image.h" +#include +#include +#include "Cursor.h" + +void configureOpenGL(void); + +Racer* app; + +bool justMoved = false; + +int main(int argc, char* argv[]) +{ + app = new Racer(); + glutInit(&argc, argv); + + std::srand (time(NULL)); + + configureOpenGL(); + + app->init(); + + glutDisplayFunc([]() { app->draw(); } ); + glutIdleFunc([]() { app->update(); } ); + glutReshapeFunc([](int w, int h) { Racer::width = w; Racer::height = h; glViewport(0, 0, w, h); }); + + //Keyboard + glutKeyboardFunc([](unsigned char c, int, int) { app->keyboardState.keys[c] = true; }); + glutKeyboardUpFunc([](unsigned char c, int, int) { app->keyboardState.keys[c] = false; }); + glutSpecialFunc([](int c, int, int) { app->keyboardState.special[c] = true; }); + glutSpecialUpFunc([](int c, int, int) { app->keyboardState.special[c] = false; }); + + auto mousemotion = [](int x, int y) + { + if (justMoved) + { + justMoved = false; + return; + } + int dx = x - app->width / 2; + int dy = y - app->height / 2; + if ((dx != 0 || dy != 0) && abs(dx) < 400 && abs(dy) < 400) + { + app->mouseOffset = app->mouseOffset + Vec2f(dx, dy); + glutWarpPointer(app->width / 2, app->height / 2); + justMoved = true; + } + }; + + //Mouse + glutPassiveMotionFunc(mousemotion); + glutMotionFunc(mousemotion); + + auto mouseclick = [](int button, int state, + int x, int y) + { + if (button == GLUT_LEFT_BUTTON) + Cursor::getInstance()->state = state; + + + //std::cout << "Left button is down" << std::endl; + }; + + glutMouseFunc(mouseclick); + + Racer::height = GLUT_WINDOW_HEIGHT; + Racer::width = GLUT_WINDOW_WIDTH; + + glutMainLoop(); + + delete app; + return 0; +} + +void configureOpenGL() +{ + //Init window and glut display mode + glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); + glutInitWindowSize(1440, 900); + //glutInitWindowPosition(glutGet(GLUT_WINDOW_WIDTH) / 2 - 800/2, glutGet(GLUT_WINDOW_HEIGHT) / 2 - 600/2); + glutCreateWindow("Racer"); + glutFullScreen(); + + + //Depth testing + glEnable(GL_DEPTH_TEST); + + //Alpha blending + glEnable(GL_BLEND); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + + //Alpha testing + glEnable(GL_ALPHA_TEST); + glAlphaFunc(GL_GREATER, 0.01f); + + glEnable(GL_LIGHTING); + glEnable(GL_LIGHT0); + + glutSetCursor(GLUT_CURSOR_NONE); +} \ No newline at end of file diff --git a/Main.h b/Main.h new file mode 100644 index 0000000..e69de29 diff --git a/Menu.cpp b/Menu.cpp new file mode 100644 index 0000000..b662826 --- /dev/null +++ b/Menu.cpp @@ -0,0 +1,59 @@ +#include +#include "Menu.h" +#include "Racer.h" + +Menu::Menu() +{ + cursor = Cursor::getInstance(); +} + + +Menu::~Menu() +{ +} + +void Menu::draw(void) +{ + //Switch view to Ortho + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, Racer::width, Racer::height, 0, -10, 10); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + glDisable(GL_LIGHTING); + glDisable(GL_DEPTH_TEST); + glDisable(GL_TEXTURE_2D); + + glColor4f(60/255.0f, 60/255.0f, 60/255.0f, 0.8f); + glBegin(GL_QUADS); + glVertex2f(0,0); + glVertex2f(0, Racer::height); + glVertex2f(Racer::width, Racer::height); + glVertex2f(Racer::width, 0); + glEnd(); + + + for (MenuElement* e : elements) + { + e->draw(); + } + + cursor->draw(); + + glEnable(GL_LIGHTING); + glEnable(GL_DEPTH_TEST); +} + +void Menu::update() +{ + for (MenuElement* e : elements) + { + e->update(cursor->mousePosition.x, cursor->mousePosition.y); + } +} + +void Menu::AddMenuElement(MenuElement * e) +{ + elements.push_back(e); +} diff --git a/Menu.h b/Menu.h new file mode 100644 index 0000000..d34cdfe --- /dev/null +++ b/Menu.h @@ -0,0 +1,20 @@ +#pragma once +#include +#include "MenuElement.h" +#include "Cursor.h" + +class Menu +{ +private: + std::vector elements; + Cursor* cursor; +public: + Menu(); + ~Menu(); + + void draw(void); + void update(void); + + void AddMenuElement(MenuElement* e); +}; + diff --git a/MenuElement.cpp b/MenuElement.cpp new file mode 100644 index 0000000..1e82e52 --- /dev/null +++ b/MenuElement.cpp @@ -0,0 +1,12 @@ +#include "MenuElement.h" + +MenuElement::MenuElement(Vec2f position) +{ + hover = false; + this->position = position; +} + + +MenuElement::~MenuElement() +{ +} diff --git a/MenuElement.h b/MenuElement.h new file mode 100644 index 0000000..38964b4 --- /dev/null +++ b/MenuElement.h @@ -0,0 +1,17 @@ +#pragma once +#include "Vector.h" +#include + +class MenuElement +{ +protected: + bool hover; + Vec2f position; +public: + MenuElement(Vec2f position); + ~MenuElement(); + + virtual void draw(void) {}; + virtual void update(int x, int y) {}; +}; + diff --git a/Model.cpp b/Model.cpp new file mode 100644 index 0000000..87bac3b --- /dev/null +++ b/Model.cpp @@ -0,0 +1,383 @@ +#include "Model.h" + +#include "stb_image.h" + +#include +#include +#include +#include +#include +#include + +//Prototypes +std::vector split(std::string str, std::string sep); +std::string replace(std::string str, std::string toReplace, std::string replacement); +std::string toLower(std::string data); + +Model::Model(std::string fileName) +{ + std::string dirName = fileName; + if (dirName.rfind("/") != std::string::npos) + dirName = dirName.substr(0, dirName.rfind("/")); + if (dirName.rfind("\\") != std::string::npos) + dirName = dirName.substr(0, dirName.rfind("\\")); + if (fileName == dirName) + dirName = ""; + + + std::ifstream pFile(fileName.c_str()); + + if (!pFile.is_open()) + { + std::cout << "Could not open file " << fileName << std::endl; + return; + } + + + ObjGroup* currentGroup = new ObjGroup(); + currentGroup->materialIndex = -1; + + + while (!pFile.eof()) + { + std::string line; + std::getline(pFile, line); + + line = replace(line, "\t", " "); + while (line.find(" ") != std::string::npos) + line = replace(line, " ", " "); + if (line == "") + continue; + if (line[0] == ' ') + line = line.substr(1); + if (line == "") + continue; + if (line[line.length() - 1] == ' ') + line = line.substr(0, line.length() - 1); + if (line == "") + continue; + if (line[0] == '#') + continue; + + std::vector params = split(line, " "); + params[0] = toLower(params[0]); + + if (params[0] == "v") + vertices.push_back(Vec3f((float)atof(params[1].c_str()), (float)atof(params[2].c_str()), (float)atof(params[3].c_str()))); + else if (params[0] == "vn") + normals.push_back(Vec3f((float)atof(params[1].c_str()), (float)atof(params[2].c_str()), (float)atof(params[3].c_str()))); + else if (params[0] == "vt") + texcoords.push_back(Vec2f((float)atof(params[1].c_str()), (float)atof(params[2].c_str()))); + else if (params[0] == "f") + { + for (size_t ii = 4; ii <= params.size(); ii++) + { + Face face; + + for (size_t i = ii - 3; i < ii; i++) //magische forlus om van quads triangles te maken ;) + { + VertexIndex vertex; + std::vector indices = split(params[i == (ii - 3) ? 1 : i], "/"); + if (indices.size() >= 1) //er is een positie + vertex.position = atoi(indices[0].c_str()) - 1; + if (indices.size() == 2) //alleen texture + vertex.texcoord = atoi(indices[1].c_str()) - 1; + if (indices.size() == 3) //v/t/n of v//n + { + if (indices[1] != "") + vertex.texcoord = atoi(indices[1].c_str()) - 1; + vertex.normal = atoi(indices[2].c_str()) - 1; + } + face.vertices.push_back(vertex); + } + currentGroup->faces.push_back(face); + } + } + else if (params[0] == "s") + {//smoothing + } + else if (params[0] == "mtllib") + { + loadMaterialFile(dirName + "/" + params[1], dirName); + } + else if (params[0] == "usemtl") + { + if (currentGroup->faces.size() != 0) + groups.push_back(currentGroup); + currentGroup = new ObjGroup(); + currentGroup->materialIndex = -1; + + for (size_t i = 0; i < materials.size(); i++) + { + MaterialInfo* info = materials[i]; + if (info->name == params[1]) + { + currentGroup->materialIndex = i; + break; + } + } + if (currentGroup->materialIndex == -1) + std::cout << "Could not find material name " << params[1] << std::endl; + } + } + groups.push_back(currentGroup); + + minVertex = vertices[0]; + maxVertex = vertices[0]; + for (auto v : vertices) + { + for (int i = 0; i < 3; i++) + { + minVertex[i] = fmin(minVertex[i], v[i]); + maxVertex[i] = fmax(maxVertex[i], v[i]); + } + } + center = (minVertex + maxVertex) / 2.0f; + radius = 0; + for (auto v : vertices) + radius = fmax(radius, (center.x - v.x) * (center.x - v.x) + (center.z - v.z) * (center.z - v.z)); + radius = sqrt(radius); + + for (ObjGroup *group : groups) + { + Optimise(group); + } +} + +void Model::Optimise(ObjGroup *t) +{ + for (Face &face : t->faces) + { + for (auto &vertex : face.vertices) + { + t->VertexArray.push_back(Vertex(vertices[vertex.position].x, vertices[vertex.position].y, vertices[vertex.position].z, + normals[vertex.normal].x, normals[vertex.normal].y, normals[vertex.normal].z, + texcoords[vertex.texcoord].x, texcoords[vertex.texcoord].y)); + + } + } +} + +void Model::draw() +{ + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_NORMAL_ARRAY); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + for (auto &g : groups) + { + if (materials[g->materialIndex]->hasTexture) + { + glEnable(GL_TEXTURE_2D); + materials[g->materialIndex]->texture->bind(); + } + else + { + glDisable(GL_TEXTURE_2D); + + float color[4] = { 1, 0, 0, 1 }; + + if (materials[g->materialIndex]->hasDiffuse) + { + memcpy(color, materials[g->materialIndex]->diffuseColor.v, 3 * sizeof(float)); + glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color); + } + else if (materials[g->materialIndex]->hasAmbient) + { + memcpy(color, materials[g->materialIndex]->ambientColor.v, 3 * sizeof(float)); + glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color); + } + else if (materials[g->materialIndex]->hasSpecular) + { + memcpy(color, materials[g->materialIndex]->specularColor.v, 3 * sizeof(float)); + glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color); + } + } + + glVertexPointer(3, GL_FLOAT, sizeof(Vertex), ((float*)g->VertexArray.data()) + 0); + glNormalPointer(GL_FLOAT, sizeof(Vertex), ((float*)g->VertexArray.data()) + 3); + glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), ((float*)g->VertexArray.data()) + 6); + glDrawArrays(GL_TRIANGLES, 0, g->VertexArray.size()); + } + glDisableClientState(GL_VERTEX_ARRAY); + glDisableClientState(GL_NORMAL_ARRAY); + glDisableClientState(GL_TEXTURE_COORD_ARRAY); +} + +void Model::loadMaterialFile(std::string fileName, std::string dirName) +{ + std::ifstream pFile(fileName.c_str()); + if (!pFile.is_open()) + { + std::cout << "Could not open file " << fileName << std::endl; + return; + } + + MaterialInfo* currentMaterial = NULL; + + while (!pFile.eof()) + { + std::string line; + std::getline(pFile, line); + + line = replace(line, "\t", " "); + while (line.find(" ") != std::string::npos) + line = replace(line, " ", " "); + if (line == "") + continue; + if (line[0] == ' ') + line = line.substr(1); + if (line == "") + continue; + if (line[line.length() - 1] == ' ') + line = line.substr(0, line.length() - 1); + if (line == "") + continue; + if (line[0] == '#') + continue; + + std::vector params = split(line, " "); + params[0] = toLower(params[0]); + + if (params[0] == "newmtl") + { + if (currentMaterial != NULL) + { + materials.push_back(currentMaterial); + } + currentMaterial = new MaterialInfo(); + currentMaterial->name = params[1]; + } + else if (params[0] == "map_kd") + { + currentMaterial->hasTexture = true; + currentMaterial->texture = new Texture(dirName + "/" + params[1]); + } + else if (params[0] == "kd") + { + currentMaterial->hasDiffuse = true; + currentMaterial->diffuseColor = Vec3f(atof(params[1].c_str()), atof(params[2].c_str()), atof(params[3].c_str())); + } + else if (params[0] == "ka") + { + currentMaterial->hasAmbient = true; + currentMaterial->ambientColor = Vec3f(atof(params[1].c_str()), atof(params[2].c_str()), atof(params[3].c_str())); + } + else if (params[0] == "ks") + { + currentMaterial->hasSpecular = true; + currentMaterial->specularColor = Vec3f(atof(params[1].c_str()), atof(params[2].c_str()), atof(params[3].c_str())); + } + else + std::cout << "Didn't parse " << params[0] << " in material file" << std::endl; + } + if (currentMaterial != NULL) + materials.push_back(currentMaterial); + +} + +Model::MaterialInfo::MaterialInfo() +{ + hasTexture = false; +} + +Model::Texture::Texture(const std::string & fileName) +{ + int width, height, bpp; + stbi_set_flip_vertically_on_load(true); + unsigned char* imgData = stbi_load(fileName.c_str(), &width, &height, &bpp, 4); + + glGenTextures(1, &index); + glBindTexture(GL_TEXTURE_2D, index); + + glTexImage2D(GL_TEXTURE_2D, + 0, //level + GL_RGBA, //internal format + width, //width + height, //height + 0, //border + GL_RGBA, //data format + GL_UNSIGNED_BYTE, //data type + imgData); //data + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); + + stbi_image_free(imgData); +} + +void Model::Texture::bind() +{ + glBindTexture(GL_TEXTURE_2D, index); +} + +std::string replace(std::string str, std::string toReplace, std::string replacement) +{ + size_t index = 0; + while (true) + { + index = str.find(toReplace, index); + if (index == std::string::npos) + break; + str.replace(index, toReplace.length(), replacement); + ++index; + } + return str; +} + +std::vector split(std::string str, std::string sep) +{ + std::vector ret; + size_t index; + while (true) + { + index = str.find(sep); + if (index == std::string::npos) + break; + ret.push_back(str.substr(0, index)); + str = str.substr(index + 1); + } + ret.push_back(str); + return ret; +} + +inline std::string toLower(std::string data) +{ + std::transform(data.begin(), data.end(), data.begin(), ::tolower); + return data; +} + + + +std::map> Model::cache; + +Model* Model::load(const std::string &fileName) +{ + if (cache.find(fileName) == cache.end()) + cache[fileName] = std::pair(new Model(fileName), 0); + cache[fileName].second++; + return cache[fileName].first; +} + +void Model::unload(Model* model) +{ + for (auto m : cache) + { + if (m.second.first == model) + { + m.second.second--; + if (m.second.second == 0) + { + delete m.second.first; + cache.erase(cache.find(m.first)); + break; + } + + } + } +} + +Model::~Model(void) +{ + +} \ No newline at end of file diff --git a/Model.h b/Model.h new file mode 100644 index 0000000..5854d96 --- /dev/null +++ b/Model.h @@ -0,0 +1,87 @@ +#pragma once + +#include +#include +#include +#include +#include "Vector.h" +#include "Vertex.h" + +class Model +{ +private: + + class VertexIndex + { + public: + int position; + int normal; + int texcoord; + }; + + class Face + { + public: + std::list vertices; + }; + + class Texture + { + GLuint index; + public: + Texture(const std::string &fileName); + void bind(); + }; + + class MaterialInfo + { + public: + MaterialInfo(); + std::string name; + Texture* texture; + bool hasTexture; + + bool hasDiffuse; + Vec3f diffuseColor; + bool hasAmbient; + Vec3f ambientColor; + bool hasSpecular; + Vec3f specularColor; + + }; + + class ObjGroup + { + public: + std::string name; + int materialIndex; + std::list faces; + std::vector VertexArray; + }; + + std::vector vertices; + std::vector normals; + std::vector texcoords; + std::vector groups; + std::vector materials; + + void loadMaterialFile(std::string fileName, std::string dirName); + + Model(std::string filename); + ~Model(void); + + public: + + static std::map > cache; + static Model* load(const std::string &fileName); + static void unload(Model* model); + + void draw(); + void Optimise(ObjGroup *t); + + Vec3f minVertex; + Vec3f maxVertex; + + Vec3f center; + float radius; +}; diff --git a/ObjectTemplate.cpp b/ObjectTemplate.cpp new file mode 100644 index 0000000..5dad843 --- /dev/null +++ b/ObjectTemplate.cpp @@ -0,0 +1,14 @@ +#include "ObjectTemplate.h" + +ObjectTemplate::ObjectTemplate(std::string file, int color, bool collide, float scale, Vec3f rotation) +{ + this->file = file; + this->color = color; + this->canCollide = collide; + this->scale = scale; + this->rotation = rotation; +} + +ObjectTemplate::~ObjectTemplate() +{ +} diff --git a/ObjectTemplate.h b/ObjectTemplate.h new file mode 100644 index 0000000..23b66db --- /dev/null +++ b/ObjectTemplate.h @@ -0,0 +1,19 @@ +#pragma once +#include +#include "Vector.h" + +class ObjectTemplate +{ +public: + ObjectTemplate(std::string file, int color, bool collide, float scale, Vec3f rotation); + ~ObjectTemplate(); + + std::string file; + + int color; + bool canCollide; + + float scale; + Vec3f rotation; +}; + diff --git a/Player.cpp b/Player.cpp new file mode 100644 index 0000000..ef86dda --- /dev/null +++ b/Player.cpp @@ -0,0 +1,70 @@ +#define _USE_MATH_DEFINES +#include +#include "Player.h" +#include + +#include +#include +#include + +Player* Player::instance = NULL; + +Player::Player() +{ + speed = 10; + stars = 0; +} + +Player* Player::getInstance() +{ + if (instance == nullptr) + instance = new Player(); + + return instance; +} + +void Player::init() +{ + instance = new Player(); +} + +void Player::setObject(LevelObject * obj) +{ + kart = obj; + kart->position = position; +} + +Player::~Player() +{ +} + +void Player::setCamera() +{ + gluLookAt(0, 4, -6, 0, 0, 1, 0, 0.1f, 0); + + glRotatef(rotation.x, 1, 0, 0); + glRotatef(rotation.y, 0, 1, 0); + //glTranslatef(-position.x, -position.y, -position.z); +} + +void Player::setPosition(float angle, float fac, bool height) +{ + if (height) + position.y += angle*fac; + else + { + position.x -= (float)cos((rotation.y + angle) / 180 * M_PI) * fac; + position.z -= (float)sin((rotation.y + angle) / 180 * M_PI) * fac; + } + + kart->position = position; + kart->rotation = Vec3f(0, -rotation.y, 0); +} + +void Player::draw() { + + glTranslatef(-position.x, -position.y, -position.z); + + if (kart != nullptr) + kart->draw(); +} \ No newline at end of file diff --git a/Player.h b/Player.h new file mode 100644 index 0000000..7e3fe90 --- /dev/null +++ b/Player.h @@ -0,0 +1,33 @@ +#pragma once +#include "Vector.h" +#include "json.h" +#include "LevelObject.h" + +#include + +class Player +{ +private: + static Player* instance; + + LevelObject* kart; + +public: + Player(); + ~Player(); + + void setCamera(); + void setPosition(float angle, float fac, bool height); + void draw(void); + + static Player* getInstance(void); + static void init(void); + + void setObject(LevelObject * obj); + + Vec3f position; + Vec2f rotation; + + float speed; + int stars; +}; \ No newline at end of file diff --git a/Racer.cpp b/Racer.cpp new file mode 100644 index 0000000..10dc0eb --- /dev/null +++ b/Racer.cpp @@ -0,0 +1,145 @@ + +#include "Racer.h" +#include +#include +#include +#include "WorldHandler.h" +#include "Player.h" +#include "Cursor.h" +#include "Menu.h" +#include "Text.h" +#include "Vector.h" +#include "Button.h" + +int Racer::width = 0; +int Racer::height = 0; + +SoundSystem Racer::sound_system; +bool state = false; + +void Racer::init() +{ + player = Player::getInstance(); + worldhandler = WorldHandler::getInstance(); + cursor = Cursor::getInstance(); + + menu = new Menu(); + buildMenu(); + + lastFrameTime = 0; + state = true; + + glClearColor(0.7f, 0.7f, 1.0f, 1.0f); +} + + +void Racer::draw() +{ + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + //Draw world + glEnable(GL_LIGHTING); + glEnable(GL_DEPTH_TEST); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + gluPerspective(70, width / (float)height, 0.1f, 7500); + //gluLookAt() + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + worldhandler->draw(); + + if(!state) + menu->draw(); + + glutSwapBuffers(); +} + + +void Racer::update() +{ + float frameTime = glutGet(GLUT_ELAPSED_TIME) / 1000.0f; + float deltaTime = frameTime - lastFrameTime; + lastFrameTime = frameTime; + + if (keyboardState.keys[27] && !prevKeyboardState.keys[27]) + state = !state; + + if (state) + { + Player* player = Player::getInstance(); + + if (keyboardState.special[GLUT_KEY_LEFT] && !prevKeyboardState.special[GLUT_KEY_LEFT]) + worldhandler->PreviousWorld(); + if (keyboardState.special[GLUT_KEY_RIGHT] && !prevKeyboardState.special[GLUT_KEY_RIGHT]) + worldhandler->NextWorld(); + if (keyboardState.keys[27]) + state = false; + + player->rotation.y += mouseOffset.x / 10.0f; + player->rotation.x += mouseOffset.y / 10.0f; + + float speed = player->speed; + + Vec3f oldPosition = player->position; + + if (keyboardState.keys['w']) player->setPosition(270, deltaTime*speed, false); + if (keyboardState.keys['s']) player->setPosition(90, deltaTime*speed, false); + + + if (player->rotation.x > 25) + player->rotation.x = 25; + if (player->rotation.x < -20) + player->rotation.x = -20; + + player->position.y = worldhandler->getHeight(player->position.x, player->position.z) + 0.1f; + + if (!worldhandler->isPlayerPositionValid()) + player->position = oldPosition; + + worldhandler->update(deltaTime); + } + else + { + menu->update(); + cursor->update(cursor->mousePosition + mouseOffset); + } + + + mouseOffset = Vec2f(0, 0); + prevKeyboardState = keyboardState; + glutPostRedisplay(); + + sound_system.SetListener(player->position, Vec3f(), Vec3f()); +} + +void Racer::buildMenu() +{ + Button* start = new Button("Resume", Vec2f(1920 / 2 - 50, 1080 / 2 - 30), 100, 50); + auto toWorld = [](Button* b) + { + state = true; + }; + start->addAction(toWorld); + menu->AddMenuElement(start); + + + Button* test = new Button("Exit", Vec2f(1920 / 2 - 50, 1080 / 2 + 30), 100, 50); + test->addAction([](Button* b) + { + exit(0); + }); + menu->AddMenuElement(test); + Text* t = new Text("Pause", Vec2f(1920 / 2 - Util::glutTextWidth("Pause") / 2, 1080 / 2 - 75)); + t->setColor(Vec3f(255, 255, 0)); + menu->AddMenuElement(t); +} + + + +KeyboardState::KeyboardState() +{ + memset(keys, 0, sizeof(keys)); + memset(special, 0, sizeof(special)); +} diff --git a/Racer.h b/Racer.h new file mode 100644 index 0000000..7e6323d --- /dev/null +++ b/Racer.h @@ -0,0 +1,48 @@ +#pragma once + +class WorldHandler; +class SoundSystem; +class Player; +class Cursor; +class Menu; +#include "Vector.h" +#include "SoundSystem.h" + +class KeyboardState +{ +public: + bool keys[256]; + bool special[256]; + bool control, shift, alt; + + KeyboardState(); +}; + +class Racer +{ +public: + void init(); + void draw(); + void update(); + + WorldHandler* worldhandler; + Player* player; + Cursor* cursor; + Menu* menu; + + static int width, height; + KeyboardState keyboardState; + KeyboardState prevKeyboardState; + + Vec2f mouseOffset; + Vec2f mousePosition; + + float lastFrameTime; + + static SoundSystem& GetSoundSystem() { return sound_system; } + + +private: + static SoundSystem sound_system; + void buildMenu(); +}; \ No newline at end of file diff --git a/Racer.sln b/Racer.sln new file mode 100644 index 0000000..d118940 --- /dev/null +++ b/Racer.sln @@ -0,0 +1,28 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio 14 +VisualStudioVersion = 14.0.24720.0 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Racer", "Racer.vcxproj", "{F82158C7-7345-4CB0-9F90-3AB49A071904}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|x64 = Debug|x64 + Debug|x86 = Debug|x86 + Release|x64 = Release|x64 + Release|x86 = Release|x86 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Debug|x64.ActiveCfg = Debug|x64 + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Debug|x64.Build.0 = Debug|x64 + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Debug|x86.ActiveCfg = Debug|Win32 + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Debug|x86.Build.0 = Debug|Win32 + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Release|x64.ActiveCfg = Release|x64 + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Release|x64.Build.0 = Release|x64 + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Release|x86.ActiveCfg = Release|Win32 + {F82158C7-7345-4CB0-9F90-3AB49A071904}.Release|x86.Build.0 = Release|Win32 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection +EndGlobal diff --git a/Racer.vcxproj b/Racer.vcxproj new file mode 100644 index 0000000..c78de1b --- /dev/null +++ b/Racer.vcxproj @@ -0,0 +1,223 @@ + + + + + Debug + Win32 + + + Release + Win32 + + + Debug + x64 + + + Release + x64 + + + + {F82158C7-7345-4CB0-9F90-3AB49A071904} + Win32Proj + Racer + 8.1 + Racer + + + + Application + true + v140 + Unicode + + + Application + false + v140 + true + Unicode + + + Application + true + v140 + Unicode + + + Application + false + v140 + true + Unicode + + + + + + + + + + + + + + + + + + + + + true + + + true + + + false + + + false + + + + NotUsing + Level3 + Disabled + WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) + + lib/serial;freeglut/include; openAL/include + + + Console + true + freeglut/lib; openAL/libs/Win32 + setupapi.lib;openal32.lib;%(AdditionalDependencies) + + + + + NotUsing + Level3 + Disabled + _DEBUG;_CONSOLE;%(PreprocessorDefinitions) + + lib/serial;freeglut/include;C:\Program Files (x86)\OpenAL 1.1 SDK\include + + + Console + true + freeglut/lib;C:\Program Files (x86)\OpenAL 1.1 SDK\libs\Win32 + setupapi.lib;openal32.lib;%(AdditionalDependencies) + + + + + Level3 + NotUsing + MaxSpeed + true + true + WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + + lib/serial;freeglut/include; openAL/include + + + Console + true + true + true + freeglut/lib; openAL/libs/Win32 + setupapi.lib;openal32.lib;%(AdditionalDependencies) + + + + + Level3 + NotUsing + MaxSpeed + true + true + NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + + lib/serial;freeglut/include; + + + Console + true + true + true + freeglut/lib + setupapi.lib;openal32.lib;%(AdditionalDependencies) + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/Racer.vcxproj.filters b/Racer.vcxproj.filters new file mode 100644 index 0000000..9c3ced1 --- /dev/null +++ b/Racer.vcxproj.filters @@ -0,0 +1,199 @@ + + + + + {4FC737F1-C7A5-4376-A066-2A32D752A2FF} + cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx + + + {93995380-89BD-4b04-88EB-625FBE52EBFB} + h;hh;hpp;hxx;hm;inl;inc;xsd + + + {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} + rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms + + + {1e464995-b141-43fd-9e25-16d6ac47176b} + + + {0de1a037-e536-40df-a0d0-0d929f2fe752} + + + {9c655946-3f99-44ea-bc97-2817656954e0} + + + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files\Object + + + Source Files\Object + + + Source Files\Object + + + Source Files\Object + + + Source Files\World + + + Source Files\World + + + Source Files\World + + + Source Files + + + Source Files\World + + + Source Files\World + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + Header Files + + + + + Source Files\json + + + Source Files\json + + + + + Resource Files + + + Resource Files + + + Resource Files + + + Resource Files + + + \ No newline at end of file diff --git a/ReadMe.txt b/ReadMe.txt new file mode 100644 index 0000000..09e266d --- /dev/null +++ b/ReadMe.txt @@ -0,0 +1,29 @@ +Sanic STAR +---------- +Gemaakt door Kenneth van Ewijk + +Een simpel spel waarbij het de bedoeling is dat je alle sterren oppakt. +Als je alle sterren hebt verzamelt, gaat hij naar de volgende wereld. +Er zijn momenteel slechts vier werelden. + +Opstarten en afsluiten: +Druk op starten in Visual Studio. (Release, x86) +Om af te sluiten, druk op ESC en kies Exit in het menu. + +Besturing: + - W en S voor vooruit/achteruit + - Muis om te sturen en te kijken + - Forceren van wereld veranderen (zonder alle sterren te verzamelen) door op de rechter pijltjestoets te drukken. + +Deze game bevat de volgende onderdelen: + - Bestuurbare third person camera + - In de scene zijn een aantal verschillende objecten + - De sterren draaien automatisch rond + - SANIC die je bestuurd en de sterren die je op kan pakken zijn objecten die te benvloeden zijn. + - De bomen staan stil. Een of meerdere objecten staan stil + - De bomen/gras/sanic/sterren worden uit een obj file geladen + - Het terrein wordt als heightmap met code gegenereerd. + - De rode sterren, bij speciale speed boost sterren, zijn relatieve transformaties + - Overal zit OpenGL belichting op + - Op alle objecten en op de heightmap zit texture mapping + - Toetsenbord wordt gebruikt voor besturing diff --git a/Skybox.cpp b/Skybox.cpp new file mode 100644 index 0000000..820b3b1 --- /dev/null +++ b/Skybox.cpp @@ -0,0 +1,148 @@ +#include "cmath" +#include + +#include "Util.h" +#include "stb_image.h" +#include "Skybox.h" +#include +#include + +enum{SKY_LEFT=0,SKY_BACK,SKY_RIGHT,SKY_FRONT,SKY_TOP,SKY_BOTTOM}; +GLuint skybox[6]; + +Skybox::Skybox(const float &size, const std::string &folder) +{ + this->size = size; + this->folder = folder; +} + +Skybox::~Skybox() +{ + glDeleteTextures(6, &skybox[0]); +} + +void Skybox::init() +{ + skybox[SKY_LEFT] = Util::loadTexture(folder + "left.png"); + skybox[SKY_BACK] = Util::loadTexture(folder + "back.png"); + skybox[SKY_RIGHT] = Util::loadTexture(folder + "right.png"); + skybox[SKY_FRONT] = Util::loadTexture(folder + "front.png"); + skybox[SKY_TOP] = Util::loadTexture(folder + "top.png"); + skybox[SKY_BOTTOM] = Util::loadTexture(folder + "bottom.png"); +} + +void Skybox::draw() +{ + glColor4f(1.0f, 1.0f, 1.0f, 1); + + bool b1 = glIsEnabled(GL_TEXTURE_2D); + glDisable(GL_LIGHTING); + glDisable(GL_DEPTH_TEST); + glEnable(GL_TEXTURE_2D); + glDisable(GL_COLOR_MATERIAL); + + glBindTexture(GL_TEXTURE_2D, skybox[SKY_BACK]); + glBegin(GL_QUADS); + glTexCoord2f(1,1); + glVertex3f(size / 2, size / 2, size / 2); + glTexCoord2f(0,1); + glVertex3f(-size / 2, size / 2, size / 2); + glTexCoord2f(0,0); + glVertex3f(-size / 2, -size / 2, size / 2); + glTexCoord2f(1,0); + glVertex3f(size / 2, -size / 2, size / 2); + glEnd(); + + glBindTexture(GL_TEXTURE_2D, skybox[SKY_LEFT]); + glBegin(GL_QUADS); + //left face + glTexCoord2f(1,1); + glVertex3f(-size / 2, size / 2, size / 2); + glTexCoord2f(0,1); + glVertex3f(-size / 2, size / 2, -size / 2); + glTexCoord2f(0,0); + glVertex3f(-size / 2, -size / 2, -size / 2); + glTexCoord2f(1,0); + glVertex3f(-size / 2, -size / 2, size / 2); + glEnd(); + glBindTexture(GL_TEXTURE_2D, skybox[SKY_FRONT]); + glBegin(GL_QUADS); + //front face + glTexCoord2f(0, 1); + glVertex3f(size / 2, size / 2, -size / 2); + glTexCoord2f(1, 1); + glVertex3f(-size / 2, size / 2, -size / 2); + glTexCoord2f(1, 0); + glVertex3f(-size / 2, -size / 2, -size / 2); + glTexCoord2f(0, 0); + glVertex3f(size / 2, -size / 2, -size / 2); + glEnd(); + glBindTexture(GL_TEXTURE_2D, skybox[SKY_RIGHT]); + glBegin(GL_QUADS); + //right face + glTexCoord2f(1, 1); + glVertex3f(size / 2, size / 2, -size / 2); + glTexCoord2f(0,1); + glVertex3f(size / 2, size / 2, size / 2); + glTexCoord2f(0,0); + glVertex3f(size / 2, -size / 2, size / 2); + glTexCoord2f(1, 0); + glVertex3f(size / 2, -size / 2, -size / 2); + glEnd(); + glBindTexture(GL_TEXTURE_2D, skybox[SKY_TOP]); + glBegin(GL_QUADS); //top face + glTexCoord2f(0,0); + glVertex3f(size / 2, size / 2, size / 2); + glTexCoord2f(0,1); + glVertex3f(-size / 2, size / 2, size / 2); + glTexCoord2f(1,1); + glVertex3f(-size / 2, size / 2, -size / 2); + glTexCoord2f(1,0); + glVertex3f(size / 2, size / 2, -size / 2); + glEnd(); + glBindTexture(GL_TEXTURE_2D, skybox[SKY_BOTTOM]); + glBegin(GL_QUADS); + //bottom face + glTexCoord2f(0,1); + glVertex3f(size / 2, -size / 2, size / 2); + glTexCoord2f(0,0); + glVertex3f(-size / 2, -size / 2, size / 2); + glTexCoord2f(1,0); + glVertex3f(-size / 2, -size / 2, -size / 2); + glTexCoord2f(1,1); + glVertex3f(size / 2, -size / 2, -size / 2); + glEnd(); + glEnable(GL_LIGHTING); //turn everything back, which we turned on, and turn everything off, which we have turned on. + glEnable(GL_DEPTH_TEST); + if (!b1) + glDisable(GL_TEXTURE_2D); +} + +GLuint Skybox::loadTexture(const std::string & fileName) //load the filename named texture +{ + int width, height, bpp; + + stbi_set_flip_vertically_on_load(true); + unsigned char* imgData = stbi_load(fileName.c_str(), &width, &height, &bpp, 4); + GLuint num; + glGenTextures(1, &num); + glBindTexture(GL_TEXTURE_2D, num); + + glTexImage2D(GL_TEXTURE_2D, + 0, //level + GL_RGBA, //internal format + width, //width + height, //height + 0, //border + GL_RGBA, //data format + GL_UNSIGNED_BYTE, //data type + imgData); //data + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); + + stbi_image_free(imgData); + return num; +} + diff --git a/Skybox.h b/Skybox.h new file mode 100644 index 0000000..a29635d --- /dev/null +++ b/Skybox.h @@ -0,0 +1,18 @@ +#pragma once +#include + +class Skybox +{ +private: + float size; + std::string folder; +public: + Skybox(const float &size, const std::string &folder); + ~Skybox(); + + void init(); + void draw(); + + GLuint loadTexture(const std::string &fileName); + +}; diff --git a/Sound.cpp b/Sound.cpp new file mode 100644 index 0000000..dbd04cd --- /dev/null +++ b/Sound.cpp @@ -0,0 +1,167 @@ +#include "Sound.h" + +#include +#ifdef WIN32 +#include +#include +#else +#include +typedef unsigned long DWORD; +typedef unsigned short WORD; +typedef unsigned int UNINT32; +typedef unsigned char BYTE; +#endif + + +Sound::Sound(const char* inWavPath, bool inLooping): + buffer_id(0), + source_id(0), + is_looping(inLooping) +{ + const char* path = inWavPath; + + FILE *fp = fopen(path, "rb"); // Open the WAVE file + if (!fp) + return; // Could not open file + + // Check that the WAVE file is OK + char type[4]; + fread(type, sizeof(char), 4, fp); // Reads the first bytes in the file + if (type[0] != 'R' || type[1] != 'I' || type[2] != 'F' || type[3] != 'F') // Should be "RIFF" + return; // Not RIFF + + DWORD size; + fread(&size, sizeof(DWORD), 1, fp); // Continue to read the file + fread(type, sizeof(char), 4, fp); // Continue to read the file + if (type[0] != 'W' || type[1] != 'A' || type[2] != 'V' || type[3] != 'E') // This part should be "WAVE" + return; // Not WAVE + + fread(type, sizeof(char), 4, fp); // Continue to read the file + if (type[0] != 'f' || type[1] != 'm' || type[2] != 't' || type[3] != ' ') // This part should be "fmt " + return; // Not fmt + + // Now we know that the file is a acceptable WAVE file + // Info about the WAVE data is now read and stored + DWORD chunkSize; + fread(&chunkSize, sizeof(DWORD), 1, fp); + short formatType; + fread(&formatType, sizeof(short), 1, fp); + short channels; + fread(&channels, sizeof(short), 1, fp); + DWORD sampleRate; + fread(&sampleRate, sizeof(DWORD), 1, fp); + DWORD avgBytesPerSec; + fread(&avgBytesPerSec, sizeof(DWORD), 1, fp); + short bytesPerSample; + fread(&bytesPerSample, sizeof(short), 1, fp); + short bitsPerSample; + fread(&bitsPerSample, sizeof(short), 1, fp); + ALenum format = 0; // The audio format (bits per sample, number of channels) + if (bitsPerSample == 8) + { + if (channels == 1) + format = AL_FORMAT_MONO8; + else if (channels == 2) + format = AL_FORMAT_STEREO8; + } + else if (bitsPerSample == 16) + { + if (channels == 1) + format = AL_FORMAT_MONO16; + else if (channels == 2) + format = AL_FORMAT_STEREO16; + } + if (!format) + return; // Not valid format + + fread(type, sizeof(char), 4, fp); + if (type[0] != 'd' || type[1] != 'a' || type[2] != 't' || type[3] != 'a') // This part should be "data" + return; // not data + + DWORD dataSize; + fread(&dataSize, sizeof(DWORD), 1, fp); // The size of the sound data is read + + // Display the info about the WAVE file + std::cout << "Chunk Size: " << chunkSize << "\n"; + std::cout << "Format Type: " << formatType << "\n"; + std::cout << "Channels: " << channels << "\n"; + std::cout << "Sample Rate: " << sampleRate << "\n"; + std::cout << "Average Bytes Per Second: " << avgBytesPerSec << "\n"; + std::cout << "Bytes Per Sample: " << bytesPerSample << "\n"; + std::cout << "Bits Per Sample: " << bitsPerSample << "\n"; + std::cout << "Data Size: " << dataSize << "\n"; + + unsigned char* buf = new unsigned char[dataSize]; // Allocate memory for the sound data + std::cout << fread(buf, sizeof(BYTE), dataSize, fp) << " bytes loaded\n"; // Read the sound data and display the + fclose(fp); + + alGenBuffers(1, &buffer_id); // Generate one OpenAL Buffer and link to "buffer" + alGenSources(1, &source_id); // Generate one OpenAL Source and link to "source" + if (alGetError() != AL_NO_ERROR) + return; // Error during buffer/source generation + + alBufferData(buffer_id, format, buf, dataSize, sampleRate); // Store the sound data in the OpenAL Buffer + if (alGetError() != AL_NO_ERROR) + return; // Error during buffer loading + + delete[] buf; // Delete the sound data buffer +} + + +Sound::~Sound() +{ + alSourceStop(source_id); + alDeleteSources(1, &source_id); // Delete the OpenAL Source + alDeleteBuffers(1, &buffer_id); // Delete the OpenAL Buffer +} + + +void Sound::SetPos(const Vec3f& inPos, const Vec3f& inVel) +{ + alSourcei(source_id, AL_BUFFER, buffer_id); // Link the buffer to the source + alSourcef(source_id, AL_PITCH, 1.0f); // Set the pitch of the source + alSourcef(source_id, AL_GAIN, 1.0f); // Set the gain of the source + alSourcefv(source_id, AL_POSITION, inPos.v); // Set the position of the source + alSourcefv(source_id, AL_VELOCITY, inVel.v); // Set the velocity of the source + alSourcei(source_id, AL_LOOPING, is_looping ? AL_TRUE : AL_FALSE); // Set if source is looping sound +} + + +void Sound::Play() +{ + alSourcePlay(source_id); + int e = alGetError(); // != AL_NO_ERROR) return; +} + + +void Sound::Pause() +{ + alSourcePause(source_id); +} + + +void Sound::Stop() +{ + alSourceStop(source_id); +} + +bool Sound::IsPlaying() +{ + ALenum state; + + alGetSourcei(source_id, AL_SOURCE_STATE, &state); + + return (state == AL_PLAYING); +} + +bool Sound::IsStopped() +{ + ALenum state; + + alGetSourcei(source_id, AL_SOURCE_STATE, &state); + + std::cout << "MUSIC STATE: " << state << std::endl; + + return (state == AL_STOPPED); +} + diff --git a/Sound.h b/Sound.h new file mode 100644 index 0000000..680366d --- /dev/null +++ b/Sound.h @@ -0,0 +1,24 @@ +#pragma once + +#include "Vector.h" + +class Sound +{ +public: + Sound(const char* inWavPath, bool inLooping); + ~Sound(); + + void SetPos(const Vec3f& inPos, const Vec3f& inVel); + + void Play(); + void Pause(); + void Stop(); + bool IsPlaying(); + bool IsStopped(); + +private: + unsigned int buffer_id; + unsigned int source_id; + + bool is_looping; +}; \ No newline at end of file diff --git a/SoundSystem.cpp b/SoundSystem.cpp new file mode 100644 index 0000000..7e2ce76 --- /dev/null +++ b/SoundSystem.cpp @@ -0,0 +1,58 @@ +#include "SoundSystem.h" + +SoundSystem::SoundSystem(): + device(nullptr), + context(nullptr) +{ + device = alcOpenDevice(nullptr); + if (!device) + return; + context = alcCreateContext(device, nullptr); + if (!context) + return; + alcMakeContextCurrent(context); +} + + +SoundSystem::~SoundSystem() +{ + for (auto sound : sounds) + delete sound; + alcMakeContextCurrent(nullptr); + alcDestroyContext(context); + alcCloseDevice(device); +} + + +void SoundSystem::SetListener(const Vec3f& inPos, const Vec3f& inVel, const Vec3f& inOri) +{ + ALfloat orientation[] = { 0.0, 0.0, -1.0, 0.0, 1.0, 0.0 }; + + alListenerfv(AL_POSITION, inPos.v); + alListenerfv(AL_VELOCITY, inVel.v); + alListenerfv(AL_ORIENTATION, orientation); +} + + +unsigned int SoundSystem::LoadSound(const char* inWavPath, bool inLooping) +{ + Sound* sound = new Sound(inWavPath, inLooping); + sounds.push_back(sound); + return sounds.size() - 1; +} + + +Sound* SoundSystem::GetSound(unsigned int inID) +{ + if (inID > sounds.size()) + return nullptr; + return sounds[inID]; +} + +void SoundSystem::UnloadSound(unsigned int inID) +{ + if (inID > sounds.size()) + return; + delete sounds[inID]; + //sounds.erase(sounds.begin() + inID); +} diff --git a/SoundSystem.h b/SoundSystem.h new file mode 100644 index 0000000..274f2d9 --- /dev/null +++ b/SoundSystem.h @@ -0,0 +1,28 @@ +#pragma once + +#include + +#include +#include + +#include "Vector.h" +#include "Sound.h" + + +class SoundSystem +{ +public: + SoundSystem(); + ~SoundSystem(); + + void SetListener(const Vec3f& inPos, const Vec3f& inVel, const Vec3f& inOri); + + unsigned int LoadSound(const char* inWavPath, bool inLooping); + Sound* GetSound(unsigned int inID); + void UnloadSound(unsigned int inID); + +private: + ALCdevice* device; + ALCcontext* context; + std::vector sounds; +}; diff --git a/Star.cpp b/Star.cpp new file mode 100644 index 0000000..4e6e8cb --- /dev/null +++ b/Star.cpp @@ -0,0 +1,78 @@ +#include "Star.h" +#include "Model.h" + + +Star::Star(Vec3f position) +{ + scale = 1; + + model = Model::load("resources/models/star/I_star.obj"); + specialstar = Model::load("resources/models/redstar/I_star.obj"); + + scale = 0.2; + this->position = position; + rotVal = 0; + + int rand = std::rand() % 100; + + special = false; + if (rand <= 25) + { + special = true; + } +} + + +Star::~Star() +{ + if (model) + Model::unload(model); + if (specialstar) + Model::unload(specialstar); +} + +void Star::draw() +{ + if (model) + { + glPushMatrix(); + + glTranslatef(position.x, position.y, position.z); + glRotatef(rotation.x, 1, 0, 0); + glRotatef(rotation.y, 0, 1, 0); + glRotatef(rotation.z, 0, 0, 1); + glScalef(scale, scale, scale); + + model->draw(); + + if (special) + { + glRotatef(rotVal, 0, 1, 0); + glTranslatef(4.0f, 12.0f, 4.0f); + glRotatef(rotVal, 0, 1, 0); + glScalef(0.3f, 0.3f, 0.3f); + + specialstar->draw(); + } + + glPopMatrix(); + } + +} + +void Star::update(float deltaTime) +{ + rotation.y += deltaTime * 100.0f; + rotVal += deltaTime * 100.0f * 1.5f; +} + +bool Star::inObject(const Vec3f & point) +{ + if (!model) + return false; + Vec3f center = position + model->center; + float distance = ((point.x - center.x) * (point.x - center.x) + (point.z - center.z)*(point.z - center.z)); + if (distance < model->radius*scale*model->radius*scale) + return true; + return false; +} diff --git a/Star.h b/Star.h new file mode 100644 index 0000000..2c9924c --- /dev/null +++ b/Star.h @@ -0,0 +1,29 @@ +#pragma once +#include "Entity.h" +#include "Vector.h" +#include "Model.h" + +class Star +{ +private: + float rotVal; + Model * specialstar; + Model* model; + +public: + Star(Vec3f position); + ~Star(); + + void draw(void); + void update(float elapsedTime); + + Vec3f position; + Vec3f rotation; + float scale; + + bool canCollide; + bool inObject(const Vec3f &position); + + bool special; +}; + diff --git a/Text.cpp b/Text.cpp new file mode 100644 index 0000000..b02a58c --- /dev/null +++ b/Text.cpp @@ -0,0 +1,31 @@ +#include "Text.h" + + +Text::Text(const std::string &text, Vec2f position) : MenuElement(position) +{ + this->text = text; + color = Vec3f(50, 150, 150); + textHeight = 14; + textWidth = Util::glutTextWidth(text); +} + + +Text::~Text() +{ +} + +void Text::draw() +{ + glColor4f(color.x/255.0f, color.y/255.0f, color.z/255.0f, 1.0f); + Util::glutBitmapString(text, position.x-1, position.y+textHeight); +} + +void Text::update(int x, int y) +{ + //Do nothing +} + +void Text::setColor(Vec3f color) +{ + this->color = color; +} diff --git a/Text.h b/Text.h new file mode 100644 index 0000000..480837c --- /dev/null +++ b/Text.h @@ -0,0 +1,23 @@ +#pragma once +#include "MenuElement.h" +#include "Vector.h" +#include "Util.h" + +class Text : public MenuElement +{ +private: + std::string text; + Vec3f color; +protected: + int textWidth; + int textHeight; +public: + Text(const std::string &text, Vec2f position); + ~Text(); + + virtual void draw(); + virtual void update(int x, int y); + + void setColor(Vec3f color); +}; + diff --git a/Util.cpp b/Util.cpp new file mode 100644 index 0000000..2dbb6bf --- /dev/null +++ b/Util.cpp @@ -0,0 +1,65 @@ +#include "Util.h" +#include "stb_image.h" + +Util::Util() +{ + +} + + +Util::~Util() +{ +} + +GLuint Util::loadTexture(const std::string &filename) +{ + int width, height, bpp; + + stbi_set_flip_vertically_on_load(true); + unsigned char* imgData = stbi_load(filename.c_str(), &width, &height, &bpp, 4); + GLuint num; + glGenTextures(1, &num); + glBindTexture(GL_TEXTURE_2D, num); + + glTexImage2D(GL_TEXTURE_2D, + 0, //level + GL_RGBA, //internal format + width, //width + height, //height + 0, //border + GL_RGBA, //data format + GL_UNSIGNED_BYTE, //data type + imgData); //data + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); + + stbi_image_free(imgData); + return num; +} + +void Util::glutBitmapString(std::string str, int x, int y) +{ + glRasterPos2f(x, y); + for (int i = 0; i < str.size(); i++) + { + glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, str[i]); + } +} + +int Util::glutTextWidth(const std::string str) +{ + int total = 0; + for (int i = 0; i < str.size(); i++) + { + total += glutBitmapWidth(GLUT_BITMAP_HELVETICA_18, str[i]); + } + return total; +} + +//int Util::glutTextHeight() +//{ +// return glutBitmapHeight(GLUT_BITMAP_HELVETICA_18); +//} + diff --git a/Util.h b/Util.h new file mode 100644 index 0000000..3aac7d8 --- /dev/null +++ b/Util.h @@ -0,0 +1,16 @@ +#pragma once +#include +#include + +class Util +{ +private: + Util(); + ~Util(); +public: + static GLuint loadTexture(const std::string &filename); + static void glutBitmapString(std::string str, int x, int y); + static int glutTextWidth(const std::string str); + //static int glutTextHeight(); +}; + diff --git a/Vector.cpp b/Vector.cpp new file mode 100644 index 0000000..8a7522e --- /dev/null +++ b/Vector.cpp @@ -0,0 +1,130 @@ +#define _USE_MATH_DEFINES +#include +#include "Vector.h" + + +Vec3f::Vec3f(float x, float y, float z) +{ + this->x = x; + this->y = y; + this->z = z; +} +/*The length of the vector*/ +float Vec3f::Length() +{ + return (float)sqrt(x*x+y*y+z*z); +} + +void Vec3f::Normalize() +{ + float length = this->Length(); + + if (length != 0) + { + x = x / length; + y = y / length; + z = z / length; + } +} + +float Vec3f::Distance(const Vec3f &other) +{ + return (float)sqrt(pow(other.x - x, 2)+pow(other.y - y, 2)+pow(other.z - z, 2)); +} + +Vec3f::Vec3f() +{ + this->x = 0; + this->y = 0; + this->z = 0; +} +Vec3f::Vec3f(const Vec3f &other) +{ + this->x = other.x; + this->y = other.y; + this->z = other.z; +} + +float& Vec3f::operator [](int index) +{ + return v[index]; +} + +Vec3f Vec3f::operator+(const Vec3f & other) +{ + return Vec3f(x + other.x, y + other.y, z + other.z); +} + +Vec3f Vec3f::operator-(const Vec3f & other) +{ + return Vec3f(x - other.x, y - other.y, z - other.z); +} + +Vec3f Vec3f::operator/(float value) +{ + return Vec3f(x / value, y / value, z / value); +} + +bool Vec3f::operator==(const Vec3f & other) +{ + /*bool xb, yb,zb; + xb = x == other.x; + yb = y == other.y; + zb = z == other.z; + if (xb & yb & zb) + return true;*/ + return x == other.x & y == other.y & z == other.z; +} + +bool Vec3f::operator!=(const Vec3f & other) +{ + return x != other.x & y != other.y & z != other.z; +} + +Vec3f Vec3f::operator*(const float & other) +{ + return Vec3f(x*other, y*other, z*other); +} + +Vec3f Vec3f::cross(const Vec3f & other) +{ + return Vec3f( + y*other.z - other.y*z, + z*other.x - other.z*x, + x*other.y - other.x*y + ); +} + + + +Vec2f::Vec2f(float x, float y) +{ + this->x = x; + this->y = y; +} +Vec2f::Vec2f() +{ + this->x = 0; + this->y = 0; +} +Vec2f::Vec2f(const Vec2f &other) +{ + this->x = other.x; + this->y = other.y; +} + +float& Vec2f::operator [](int index) +{ + return v[index]; +} + +Vec2f Vec2f::operator+(const Vec2f & other) +{ + return Vec2f(x + other.x, y+other.y); +} + +float Vec2f::length() +{ + return (float)sqrt(x*x + y*y); +} + diff --git a/Vector.h b/Vector.h new file mode 100644 index 0000000..bf6ed72 --- /dev/null +++ b/Vector.h @@ -0,0 +1,50 @@ +#pragma once + +class Vec3f +{ +public: + union + { + struct + { + float x, y, z; + }; + float v[3]; + }; + Vec3f(); + Vec3f(const Vec3f &other); + Vec3f(float x, float y, float z); + float Length(); + void Normalize(); + float Distance(const Vec3f &); + float& operator [](int); + Vec3f operator + (const Vec3f &other); + Vec3f operator -(const Vec3f &other); + Vec3f operator / (float value); + bool operator ==(const Vec3f &other); + bool operator !=(const Vec3f &other); + Vec3f operator *(const float &other); + + Vec3f cross(const Vec3f &other); + +}; + +class Vec2f +{ +public: + union + { + struct + { + float x, y; + }; + float v[2]; + }; + Vec2f(); + Vec2f(float x, float y); + Vec2f(const Vec2f &other); + float& operator [](int); + Vec2f operator + (const Vec2f &other); + float length(); +}; + diff --git a/Vertex.cpp b/Vertex.cpp new file mode 100644 index 0000000..597c541 --- /dev/null +++ b/Vertex.cpp @@ -0,0 +1,39 @@ +#include "Vertex.h" + +Vertex::Vertex(float x, float y, float z, float nx, float ny, float nz, float tx, float ty) +{ + this->x = x; + this->y = y; + this->z = z; + + this->normalX = nx; + this->normalY = ny; + this->normalZ = nz; + + this->texX = tx; + this->texY = ty; +} + +Vertex::~Vertex() +{ +} + +Vertex Vertex::operator/(const float &other) const +{ + return Vertex(x / other, y / other, z / other, normalX, normalY, normalZ, texX, texY); +} + +Vertex Vertex::operator*(const Vertex & other) const +{ + return Vertex(x*other.x, y*other.y, z*other.z, normalX, normalY, normalZ, texX, texY); +} + +Vertex Vertex::operator*(const float & other) const +{ + return Vertex(x*other, y*other, z*other, normalX, normalY, normalZ, texX, texY); +} + +Vertex Vertex::operator+(const Vertex & other) const +{ + return Vertex(x+other.x, y+other.y, z+other.z, normalX, normalY, normalZ, texX, texY); +} diff --git a/Vertex.h b/Vertex.h new file mode 100644 index 0000000..a16638a --- /dev/null +++ b/Vertex.h @@ -0,0 +1,24 @@ +#pragma once +class Vertex +{ +public: + Vertex(float x, float y, float z, float nx, float ny, float nz, float tx, float ty); + ~Vertex(); + + float x; + float y; + float z; + + float normalX; + float normalY; + float normalZ; + + float texX; + float texY; + + Vertex operator/(const float &other) const; + Vertex operator*(const Vertex &other) const; + Vertex operator*(const float &other) const; + Vertex operator+(const Vertex &other) const; +}; + diff --git a/World.cpp b/World.cpp new file mode 100644 index 0000000..6aa5b6c --- /dev/null +++ b/World.cpp @@ -0,0 +1,271 @@ +#include "World.h" +#include +#include "Entity.h" +#include "json.h" +#include "Model.h" +#include +#include +#include +#include +#include +#include "WorldHandler.h" +#include "LevelObject.h" + +World::World(const std::string &fileName) +{ + nextworld = false; + speedboost = false; + seconds = 0; + + //Store player instance + player = Player::getInstance(); + + //Open world json file + std::ifstream file(fileName); + if(!file.is_open()) + std::cout<<"Error, can't open world file - " << fileName << "\n"; + + json::Value v = json::readJson(file); + file.close(); + + //Check file + if(v["world"].isNull() || v["world"]["heightmap"].isNull() || v["world"]["skybox"].isNull()) + std::cout << "Invalid world file: world - " << fileName << "\n"; + if (v["world"]["object-templates"].isNull()) + std::cout << "Invalid world file: object templates - " << fileName << "\n"; + if (v["player"].isNull() || v["player"]["startposition"].isNull() || v["player"]["kart"].isNull()) + std::cout << "Invalid world file: player - " << fileName << "\n"; + if (v["objects"].isNull()) + std::cout << "Invalid world file: objects - " << fileName << "\n"; + + //Load object templates + for (auto objt : v["world"]["object-templates"]) + { + //collision + bool cancollide = true; + if (!objt["collision"].isNull()) + cancollide = objt["collision"].asBool(); + + float scaleot = 1; + if (!objt["scale"].isNull()) + scaleot = objt["scale"].asFloat(); + + Vec3f rotationot = Vec3f(0,0,0); + if (!objt["rot"].isNull()) + rotationot = Vec3f(objt["rot"][0].asFloat(), objt["rot"][3].asFloat(), objt["rot"][2].asFloat()); + + objecttemplates.push_back(ObjectTemplate(objt["file"].asString(), objt["color"].asInt(), cancollide, scaleot, rotationot)); + } + + //Generate heightmap for this world + heightmap = new HeightMap(v["world"]["heightmap"].asString(), this); + + //Load skybox + skybox = new Skybox(7500.0f, v["world"]["skybox"].asString()); + skybox->init(); + + //Map different texture to heightmap if available + if(!v["world"]["texture"].isNull()) + heightmap->SetTexture(v["world"]["texture"].asString()); + + //Set player starting position + player->position.x = v["player"]["startposition"][0].asFloat(); + player->position.z = v["player"]["startposition"][2].asFloat(); + player->position.y = heightmap->GetHeight(player->position.x, player->position.z); + + float pscale = 1.0f; + if(!v["player"]["kart"]["scale"].isNull()) + pscale = v["player"]["kart"]["scale"].asFloat(); + + + player->setObject(new LevelObject(v["player"]["kart"]["file"].asString(), Vec3f(), Vec3f(), pscale, false)); + + //Create the interface + starsCount = stars.size(); + interface = new Interface(stars.size()); + + //Load and place objects into world + for (auto object : v["objects"]) + { + //Collision + bool hasCollision = true; + if (!object["collide"].isNull()) + hasCollision = object["collide"].asBool(); + + //Rotation + Vec3f rotation(0, 0, 0); + if(!object["rot"].isNull()) + rotation = Vec3f(object["rot"][0].asFloat(), object["rot"][1].asFloat(), object["rot"][2].asFloat()); + + //Scale + float scale = 1; + if (!object["scale"].isNull()) + scale = object["scale"].asFloat(); + + //Position + if (object["pos"].isNull()) + std::cout << "Invalid world file: objects pos - " << fileName << "\n"; + + //File + if (object["file"].isNull()) + std::cout << "Invalid world file: objects file - " << fileName << "\n"; + + //Create + Vec3f position(object["pos"][0].asFloat(), object["pos"][1].asFloat(), object["pos"][2].asFloat()); + position.y = getHeight(position.x, position.z); + + entities.push_back(new LevelObject(object["file"].asString(), position, rotation, scale, hasCollision)); + } + + if (!v["world"]["music"].isNull()) + { + sound_id = Racer::GetSoundSystem().LoadSound(v["world"]["music"].asString().c_str(), true); + music = Racer::GetSoundSystem().GetSound(sound_id); + } + + star_sound_id = Racer::GetSoundSystem().LoadSound("resources/sounds/Crystal.wav", false); + starPickup = Racer::GetSoundSystem().GetSound(star_sound_id); +} + +World::~World() +{ + delete heightmap; + music->Stop(); + starPickup->Stop(); + Racer::GetSoundSystem().UnloadSound(sound_id); + Racer::GetSoundSystem().UnloadSound(star_sound_id); + delete skybox; +} + +ObjectTemplate World::getObjectFromValue(int val) +{ + for (auto i : objecttemplates) + { + if (i.color == val) + return i; + } + + return objecttemplates[0]; +} + +float World::getHeight(float x, float y) +{ + return heightmap->GetHeight(x, y); +} + +void World::draw() +{ + player->setCamera(); + + float lightPosition[4] = { 0, 2, 1, 0 }; + glLightfv(GL_LIGHT0, GL_POSITION, lightPosition); + + GLfloat lightAmbient[] = { 0.05, 0.05, 0.05, 0 }; + GLfloat light_diffuse[] = { 0.9, 0.9, 0.9, 0 }; + glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse); + glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmbient); + + GLfloat mat_specular[] = { 0.15, 0.15, 0.15, 0 }; + glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); + + skybox->draw(); + player->draw(); + + heightmap->Draw(); + + for (auto &entity : entities) + entity->draw(); + + for (auto &star : stars) + star->draw(); + + interface->draw(); +} + +void World::update(float elapsedTime) +{ + if (nextworld) + { + WorldHandler::getInstance()->NextWorld(); + return; + } + + music->SetPos(player->position, Vec3f()); + + if (music->IsPlaying() == false) + { + music->Play(); + } + + for (auto &entity : entities) + entity->update(elapsedTime); + + bool remove = false; + int removeindex = 0; + + for (auto &star : stars) + { + star->update(elapsedTime); + + if (star->inObject(player->position)) + { + remove = true; + + if (star->special) + { + speedboost = true; + seconds = 5.0; + player->speed = 20; + } + + player->stars++; + continue; + } + + if (!remove) + removeindex++; + } + + if (remove) + { + delete stars[removeindex]; + stars.erase(stars.begin() + removeindex); + } + + if (player->stars == starsCount) + nextworld = true; + + interface->update(elapsedTime); + seconds -= elapsedTime; + + if (speedboost && seconds < 0) + { + speedboost = false; + seconds = 0; + player->speed = 10; + } +} + +void World::addLevelObject(LevelObject* obj) +{ + entities.push_back(obj); +} + +void World::addStar(Star * star) +{ + stars.push_back(star); +} + +bool World::isPlayerPositionValid() +{ + for (auto &e : entities) + { + if (e->canCollide && e->inObject(player->position)) + { + e->collide(); + return false; + } + } + return true; +} + diff --git a/World.h b/World.h new file mode 100644 index 0000000..40fc1b3 --- /dev/null +++ b/World.h @@ -0,0 +1,51 @@ +#pragma once + +#include +#include "HeightMap.h" +#include "Player.h" +#include "LevelObject.h" +#include "Interface.h" +#include "Skybox.h" +#include "Racer.h" +#include "ObjectTemplate.h" +#include "Star.h" + +class Entity; + +class World +{ +private: + std::vector objecttemplates; + Sound* music; + Sound* starPickup; + + Player* player; + HeightMap* heightmap; + Interface* interface; + Skybox* skybox; + + bool nextworld; + + float seconds; + bool speedboost; + + int sound_id; + int star_sound_id; + int starsCount; + + std::vector entities; + std::vector stars; +public: + World(const std::string &fileName); + ~World(); + + void draw(); + void update(float elapsedTime); + bool isPlayerPositionValid(); + float getHeight(float x, float y); + void addLevelObject(LevelObject* obj); + void addStar(Star* star); + ObjectTemplate getObjectFromValue(int i); + +}; + diff --git a/WorldHandler.cpp b/WorldHandler.cpp new file mode 100644 index 0000000..2200d1a --- /dev/null +++ b/WorldHandler.cpp @@ -0,0 +1,140 @@ +#include "WorldHandler.h" +#include "World.h" + +#include "json.h" +#include +#include +#include + +WorldHandler* WorldHandler::instance = nullptr; + +void WorldHandler::ChangeWorld(int i) +{ + if (i < 0) + i = worldfiles.size() - 1; + + else if (i >= worldfiles.size()) + i = 0; + + if (i != worldIndex) + { + loadingWorld = true; + + if(worldIndex != -1) + delete world; + + world = new World(worldfiles[i]); + worldIndex = i; + loadingWorld = false; + } +} + +WorldHandler::WorldHandler() +{ + loadingWorld = true; + worldIndex = -1; + + //Find worlds.json + std::ifstream file("resources/worlds/worlds.json"); + if (!file.is_open()) + std::cout << "Error, can't open worlds overview file\n"; + + json::Value v = json::readJson(file); + file.close(); + + //Load file names into vector + if (v["worlds"].isNull() || !v["worlds"].isArray()) + std::cout << "Error, no content in worlds overview file\n"; + + for (auto line : v["worlds"]) + { + std::cout << "Found world: " << line << "\n"; + worldfiles.push_back(line); + } + + if (worldfiles.size() > 0) + { + ChangeWorld(0); + } +} + +WorldHandler::~WorldHandler() +{ + worldIndex = -1; + delete world; +} + +WorldHandler* WorldHandler::getInstance() +{ + if (instance == nullptr) + instance = new WorldHandler(); + + return instance; +} + +void WorldHandler::init() +{ + instance = new WorldHandler(); +} + +void WorldHandler::draw(void) +{ + if(!loadingWorld) + world->draw(); + else + { + //Draw Loading screen + } +} + +void WorldHandler::update(float deltaTime) +{ + if(!loadingWorld) + world->update(deltaTime); +} + +bool WorldHandler::isPlayerPositionValid(void) +{ + if(!loadingWorld) + return world->isPlayerPositionValid(); + return false; +} + +float WorldHandler::getHeight(float x, float y) +{ + if (!loadingWorld) + return world->getHeight(x, y); + else + return 0.0f; +} + + +void WorldHandler::Navigate(const std::string &fileName) +{ + if (!loadingWorld) + { + for (int i = 0; i < worldfiles.size(); i++) + { + if (worldfiles[i] == fileName) + ChangeWorld(i); + } + } +} + +void WorldHandler::NextWorld() +{ + if (!loadingWorld) + { + Player::getInstance()->stars = 0; + ChangeWorld(worldIndex + 1); + } +} + +void WorldHandler::PreviousWorld() +{ + if (!loadingWorld) + { + Player::getInstance()->stars = 0; + ChangeWorld(worldIndex - 1); + } +} \ No newline at end of file diff --git a/WorldHandler.h b/WorldHandler.h new file mode 100644 index 0000000..4d454c3 --- /dev/null +++ b/WorldHandler.h @@ -0,0 +1,36 @@ +#pragma once +#include +#include + +class World; + +class WorldHandler +{ +private: + WorldHandler(); + static WorldHandler* instance; + + bool loadingWorld; + World* world; + int worldIndex; + void ChangeWorld(int i); +public: + + ~WorldHandler(); + + static WorldHandler* getInstance(void); + static void init(); + + void draw(void); + void update(float deltaTime); + + bool isPlayerPositionValid(void); + float getHeight(float x, float y); + + void Navigate(const std::string &fileName); + void NextWorld(); + void PreviousWorld(); + + std::vector worldfiles; +}; + diff --git a/json.cpp b/json.cpp new file mode 100644 index 0000000..6cd9e61 --- /dev/null +++ b/json.cpp @@ -0,0 +1,730 @@ +#include "json.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include + +namespace json +{ + +Value Value::null; +//constructors +Value::Value() +{ + type = Type::nullValue; + value.objectValue = NULL; +} + +Value::Value(Type type) +{ + this->type = type; + if (type == Type::stringValue) + value.stringValue = new std::string(); + if (type == Type::arrayValue) + value.arrayValue = new std::vector(); + if (type == Type::objectValue) + value.objectValue = new std::map(); +} + +Value::Value(int value) +{ + type = Type::intValue; + this->value.intValue = value; +} + +Value::Value(float value) +{ + type = Type::floatValue; + this->value.floatValue = value; +} + +Value::Value(bool value) +{ + type = Type::boolValue; + this->value.boolValue = value; +} + +Value::Value(const std::string &value) +{ + type = Type::stringValue; + this->value.stringValue = new std::string(); + this->value.stringValue->assign(value); +} +Value::Value(const char* value) +{ + type = Type::stringValue; + this->value.stringValue = new std::string(); + this->value.stringValue->assign(value); +} + +Value::Value(const Value& other) : Value(other.type) +{ + if (type == Type::objectValue) + *this->value.objectValue = *other.value.objectValue; + else if (type == Type::arrayValue) + *this->value.arrayValue = *other.value.arrayValue; + else if (type == Type::stringValue) + this->value.stringValue->assign(*other.value.stringValue); + else + this->value = other.value; +} + +void Value::operator=(const Value& other) +{ + if (type != other.type) + { + if (type == Type::stringValue) + delete value.stringValue; + if (type == Type::arrayValue) + delete value.arrayValue; + if (type == Type::objectValue) + delete value.objectValue; + this->type = other.type; + if (type == Type::stringValue) + value.stringValue = new std::string(); + if (type == Type::arrayValue) + value.arrayValue = new std::vector(); + if (type == Type::objectValue) + value.objectValue = new std::map(); + } + + if (type == Type::objectValue) + *this->value.objectValue = *other.value.objectValue; + else if (type == Type::arrayValue) + *this->value.arrayValue = *other.value.arrayValue; + else if (type == Type::stringValue) + this->value.stringValue->assign(*other.value.stringValue); + else + this->value = other.value; +} + +Value::~Value() +{ + if (type == Type::stringValue) + delete value.stringValue; + else if (type == Type::arrayValue) + delete value.arrayValue; + else if (type == Type::objectValue) + delete value.objectValue; +} + +size_t Value::size() const +{ + assert(type == Type::arrayValue || type == Type::objectValue); + if (type == Type::arrayValue) + return value.arrayValue->size(); + else if (type == Type::objectValue) + return value.objectValue->size(); + throw "Unsupported"; +} + +void Value::push_back(const Value& value) +{ + assert(type == Type::arrayValue || type == Type::nullValue); + if (type == Type::nullValue) + { + type = Type::arrayValue; + this->value.arrayValue = new std::vector(); + } + this->value.arrayValue->push_back(value); +} + + +Value& Value::operator[](const std::string &key) +{ + assert(type == Type::objectValue); + return (*value.objectValue)[key]; +} +Value& Value::operator[](const std::string &key) const +{ + assert(type == Type::objectValue); + return (*value.objectValue)[key]; +} + +Value& Value::operator[](const char* key) +{ + assert(type == Type::objectValue || type == Type::nullValue); + if (type == Type::nullValue) + { + type = Type::objectValue; + value.objectValue = new std::map(); + } + return (*value.objectValue)[std::string(key)]; +} + +Value& Value::operator[](const char* key) const +{ + assert(type == Type::objectValue); + return (*value.objectValue)[std::string(key)]; +} + +Value& Value::operator[](size_t index) +{ + assert(type == Type::arrayValue); + return (*value.arrayValue)[index]; +} +Value& Value::operator[](size_t index) const +{ + assert(type == Type::arrayValue); + return (*value.arrayValue)[index]; +} +Value& Value::operator[](int index) +{ + assert(type == Type::arrayValue); + return (*value.arrayValue)[index]; +} +Value& Value::operator[](int index) const +{ + assert(type == Type::arrayValue); + return (*value.arrayValue)[index]; +} + +void Value::erase(size_t index) +{ + throw "Cannot cast"; +} + + + + + + + + + + + + + + +Value::Iterator Value::end() const +{ + if (type == Type::objectValue) + return Iterator(value.objectValue->end()); + else if (type == Type::arrayValue) + return Iterator(value.arrayValue->end()); + throw "oops"; +} + +Value::Iterator Value::begin() const +{ + if (type == Type::objectValue) + return Iterator(value.objectValue->begin()); + else if (type == Type::arrayValue) + return Iterator(value.arrayValue->begin()); + throw "oops"; +} + +///iterator stuff + +Value Value::Iterator::operator*() +{ + if (type == Type::objectValue) + return this->objectIterator->second; + else if (type == Type::arrayValue) + return *arrayIterator; + throw "Oops"; +} + +bool Value::Iterator::operator!=(const Iterator &other) +{ + if (type == Type::objectValue) + return this->objectIterator != other.objectIterator; + else if (type == Type::arrayValue) + return this->arrayIterator != other.arrayIterator; + throw "Oops"; +} + +void Value::Iterator::operator++() +{ + if (type == Type::objectValue) + this->objectIterator++; + else if (type == Type::arrayValue) + this->arrayIterator++; +} +void Value::Iterator::operator++(int) +{ + if (type == Type::objectValue) + this->objectIterator++; + else if (type == Type::arrayValue) + this->arrayIterator++; +} + +Value::Iterator::Iterator(const std::vector::iterator& arrayIterator) +{ + type = Type::arrayValue; + this->arrayIterator = arrayIterator; +} + +Value::Iterator::Iterator(const std::map::iterator& objectIterator) +{ + type = Type::objectValue; + this->objectIterator = objectIterator; +} + +std::string Value::Iterator::key() +{ + assert(type == Type::objectValue); + return this->objectIterator->first; +} +Value& Value::Iterator::value() +{ + assert(type == Type::objectValue); + return this->objectIterator->second; +} + + + + + + + +static void ltrim(std::istream& stream); +static void eatComment(std::istream& stream); +static Value eatString(std::istream& stream); +static Value eatObject(std::istream& stream); +static Value eatArray(std::istream& stream); +static Value eatNumeric(std::istream& stream, char firstChar); +static Value eatBool(std::istream& stream); +static Value eatNull(std::istream& stream); +static Value eatValue(std::istream& stream); + +//reading +static void ltrim(std::istream& stream) +{ + char c = stream.peek(); + while (c == ' ' || c == '\t' || c == '\n' || c == '\r') + { + stream.get(); + c = stream.peek(); + } +}; + + +static Value eatString(std::istream& stream) +{ + std::string value = ""; + bool escaped = false; + while (!stream.eof()) + { + char c = stream.get(); + if (c == '\\' && !escaped) + escaped = !escaped; + else if (c == '\"' && !escaped) + return Value(value); + else + { + value += c; + escaped = false; + } + } + return Value(value); +}; + + + + +static Value eatObject(std::istream& stream) +{ + Value obj(Type::objectValue); + while (!stream.eof()) + { + ltrim(stream); + char token = stream.get(); + if (token == '}') + break; //empty object + if (token == '/') + { + eatComment(stream); + token = stream.get(); + } + + assert(token == '"'); + Value key = eatString(stream); + ltrim(stream); + token = stream.get(); + assert(token == ':'); + ltrim(stream); + Value val = eatValue(stream); + obj[key.asString()] = val; + ltrim(stream); + + token = stream.get(); + if (token == '}') + break; + assert(token == ','); + } + return obj; +}; +static Value eatArray(std::istream& stream) +{ + Value obj(Type::arrayValue); + while (!stream.eof()) + { + ltrim(stream); + if (stream.peek() == ']') + { + stream.get(); + break; + } + obj.push_back(eatValue(stream)); + ltrim(stream); + char token = stream.get(); + if (token == '/') + { + eatComment(stream); + token = stream.get(); + } + if (token == ']') + break; + assert(token == ','); + } + return obj; +}; +static Value eatNumeric(std::istream& stream, char firstChar) +{ + std::string numeric(1, firstChar); + while (!stream.eof()) + { + char token = stream.peek(); + if ((token >= '0' && token <= '9') || token == '.' || token == '-') + numeric += stream.get(); + else + break; + } + if (numeric.find('.') == std::string::npos) + return Value(atoi(numeric.c_str())); + else + return Value((float)atof(numeric.c_str())); +}; + +static Value eatBool(std::istream& stream) +{ + char token = stream.get(); + if (token == 'a') //fAlse + { + stream.get(); //l + stream.get(); //s + stream.get(); //e + return false; + } + else if (token == 'r') //tRue + { + stream.get(); // u + stream.get(); // e + return true; + } + return Value(Type::nullValue); +}; +static Value eatNull(std::istream& stream) +{ + return Value(Type::nullValue); +}; + +//precondition: / is already eaten +static void eatComment(std::istream& stream) +{ + char token = stream.get(); + assert(token == '/' || token == '*'); + if (token == '*') + { + char last = token; + while ((last != '*' || token != '/') && !stream.eof()) + { + last = token; + token = stream.get(); + } + } + else if (token == '/') + while (token != '\n' && !stream.eof()) + token = stream.get(); + ltrim(stream); +} + + +static Value eatValue(std::istream& stream) +{ + ltrim(stream); + char token = stream.get(); + if (token == '{') + return eatObject(stream); + if (token == '[') + return eatArray(stream); + if ((token >= '0' && token <= '9') || token == '.' || token == '-') + return eatNumeric(stream, token); + if (token == '"') + return eatString(stream); + if (token == 't' || token == 'f') + return eatBool(stream); + if (token == 'n') + return eatNull(stream); + if (token == '/') + { + eatComment(stream); + return eatValue(stream); + } + throw "Unable to parse json"; +}; + + +Value readJson(const std::string &data) +{ + std::stringstream stream; + stream << data; + printf("%s", "test"); + + return eatValue(stream); +} + +Value readJson(std::istream &stream) +{ + return eatValue(stream); +} + + + +std::ostream& indent(std::ostream& stream, int level) +{ + for (int i = 0; i < level; i++) + stream << '\t'; + return stream; +} + +std::ostream& Value::prettyPrint(std::ostream& stream, json::Value& printConfig, int level) const +{ + stream << std::fixed << std::setprecision(6); + switch (type) + { + case Type::intValue: + stream << value.intValue; + break; + case Type::floatValue: + assert(!isnan(value.floatValue)); + //assert(isnormal(value.floatValue)); + if (value.floatValue >= 0) + stream << " "; + stream << value.floatValue; + break; + case Type::boolValue: + stream << (value.boolValue ? "true" : "false"); + break; + case Type::stringValue: + stream << "\"" << *value.stringValue << "\""; //TODO: escape \'s + break; + case Type::arrayValue: + { + stream << "["; + int wrap = 99999; + if (value.arrayValue->size() > 10) + wrap = 1; + if (value.arrayValue->at(0).isArray() || value.arrayValue->at(0).isObject()) + wrap = 1; + else + wrap = 3; + + std::string seperator = " "; + + if (!printConfig.isNull() && printConfig.isMember("wrap")) + wrap = printConfig["wrap"]; + if (!printConfig.isNull() && printConfig.isMember("seperator")) + seperator = printConfig["seperator"].asString(); + + + int index = 0; + + if ((long)size() > wrap) + { + stream << "\n"; + indent(stream, level + 1); + } + for (auto v : *this) + { + if (index > 0) + { + stream << "," << seperator; + if (index % wrap == 0) + { + stream << "\n"; + indent(stream, level + 1); + } + } + + json::Value childPrintConfig = json::Value::null; + if (!printConfig.isNull()) + { + if (printConfig.isMember("elements")) + childPrintConfig = printConfig["elements"]; + else if (printConfig.isMember("recursive") && printConfig["recursive"].asBool() == true) + childPrintConfig = printConfig; + } + + v.prettyPrint(stream, childPrintConfig, level + 1); + index++; + } + if ((long)size() > wrap) + { + stream << "\n"; + indent(stream, level); + } + stream << "]"; + break; + } + case Type::objectValue: + { + stream << "{\n"; + int wrap = 99999; + if (value.arrayValue->size() > 10) + wrap = 1; + if (value.arrayValue->at(0).isArray() || value.arrayValue->at(0).isObject()) + wrap = 1; + else + wrap = 3; + + std::string seperator = " "; + + if (!printConfig.isNull() && printConfig.isMember("wrap")) + wrap = printConfig["wrap"]; + if (!printConfig.isNull() && printConfig.isMember("seperator")) + seperator = printConfig["seperator"].asString(); + + + int index = 0; + indent(stream, level + 1); + + + + //for (auto v : *value.objectValue) + auto printEl = [&](const std::pair v) + { + if (index > 0) + { + stream << "," << seperator; + if (index % wrap == 0) + { + stream << "\n"; + indent(stream, level + 1); + } + } + stream << "\"" << v.first << "\" : "; + if ( + (v.second.isArray() || v.second.isObject()) && + (printConfig.isNull() || + ( + printConfig.isMember(v.first) && + printConfig[v.first].isObject() && + printConfig[v.first].isMember("wrap") && + printConfig[v.first]["wrap"].asInt() < (int)v.second.size()) + ) + ) + { + stream << "\n"; + indent(stream, level + 1); + } + + json::Value childPrintConfig = json::Value::null; + if (!printConfig.isNull()) + { + if (printConfig.isMember(v.first)) + childPrintConfig = printConfig[v.first]; + else if (printConfig.isMember("recursive") && printConfig["recursive"].asBool() == true) + childPrintConfig = printConfig; + } + + v.second.prettyPrint(stream, childPrintConfig, level + 1);; + index++; + }; + + + + std::set printed; + if (!printConfig.isNull()) + { + if (printConfig.isMember("sort")) + { + for (std::string el : printConfig["sort"]) + { + if (isMember(el)) + { + printEl(std::pair(el, (*value.objectValue)[el])); + printed.insert(el); + } + } + } + } + + for (auto v : *value.objectValue) + if (printed.find(v.first) == printed.end()) + printEl(v); + + stream << "\n"; + indent(stream, level); + stream << "}"; + break; + } + case Type::nullValue: + stream << "null"; + break; + } + return stream; +} + + +std::ostream & operator<<(std::ostream &stream, const Value& value) +{ + stream << std::fixed<< std::setprecision(6); + switch (value.type) + { + case Type::intValue: + stream << value.value.intValue; + break; + case Type::floatValue: + assert(!isnan(value.value.floatValue)); + //assert(isnormal(value.value.floatValue)); + stream << value.value.floatValue; + break; + case Type::boolValue: + stream << (value.value.boolValue ? "true" : "false"); + break; + case Type::stringValue: + stream << "\"" << *value.value.stringValue << "\""; //TODO: escape \'s + break; + case Type::arrayValue: + { + stream << "["; + bool first = true; + for (auto v : value) + { + if (!first) + stream << ", "; + stream << v; + first = false; + } + stream << "]"; + break; + } + case Type::objectValue: + { + stream << "{"; + bool first = true; + for (auto v : *value.value.objectValue) + { + if (!first) + stream << ", "; + stream << "\"" << v.first << "\" : " << v.second << std::endl; + first = false; + } + stream << "}"; + break; + } + case Type::nullValue: + stream << "null"; + break; + } + return stream; +} +} \ No newline at end of file diff --git a/json.h b/json.h new file mode 100644 index 0000000..4b7cda0 --- /dev/null +++ b/json.h @@ -0,0 +1,124 @@ +#pragma once + +#include +#include +#include +#include + +namespace json +{ + enum class Type + { + intValue, + floatValue, + boolValue, + stringValue, + arrayValue, + objectValue, + nullValue + }; + + class Value + { + public: + Type type; + union ValueHolder + { + int intValue; + float floatValue; + bool boolValue; + std::string* stringValue; + std::vector* arrayValue; + std::map* objectValue; + } value; + + static Value null; + + Value(); + Value(Type type); + Value(int value); + Value(float value); + Value(bool value); + Value(const std::string &value); + Value(const char* value); + Value(const Value& other); + virtual ~Value(); + + void operator = (const Value& other); + + + + + inline operator int() const { return asInt(); } + inline operator float() const { return asFloat(); } + inline operator bool() const { return asBool(); } + inline operator const std::string&() const { return asString(); } + + + inline int asInt() const { assert(type == Type::intValue); return value.intValue; } + inline float asFloat() const { assert(type == Type::floatValue || type == Type::intValue); return type == Type::floatValue ? value.floatValue : value.intValue; } + inline bool asBool() const { assert(type == Type::boolValue); return value.boolValue; } + inline const std::string& asString() const { assert(type == Type::stringValue); return *value.stringValue; } + inline bool isNull() const { return type == Type::nullValue; } + inline bool isString() const { return type == Type::stringValue; } + inline bool isInt() const { return type == Type::intValue; } + inline bool isBool() const { return type == Type::boolValue; } + inline bool isFloat() const { return type == Type::floatValue; } + inline bool isObject() const { return type == Type::objectValue; } + inline bool isArray() const { return type == Type::arrayValue; } + inline bool isMember(const std::string &name) const { assert(type == Type::objectValue); return value.objectValue->find(name) != value.objectValue->end(); } + //array/object + virtual size_t size() const; + //array + virtual void push_back(const Value& value); + virtual void erase(size_t index); + virtual Value& operator [] (size_t index); + virtual Value& operator [] (int index); + virtual Value& operator [] (size_t index) const; + virtual Value& operator [] (int index) const; + + virtual Value& operator [] (const std::string &key); + virtual Value& operator [] (const char* key); + virtual Value& operator [] (const std::string &key) const; + virtual Value& operator [] (const char* key) const; + + virtual bool operator == (const std::string &other) { return asString() == other; } + virtual bool operator == (const int other) { return asInt() == other; } + virtual bool operator == (const float other) { return asFloat() == other; } + + + std::ostream& prettyPrint(std::ostream& stream, json::Value& printConfig = null, int level = 0) const; + + class Iterator; + Iterator begin() const; + Iterator end() const; + }; + + class Value::Iterator + { + private: + Type type; + std::map::iterator objectIterator; + std::vector::iterator arrayIterator; + public: + Iterator(const std::map::iterator& objectIterator); + Iterator(const std::vector::iterator& arrayIterator); + + void operator ++(); + void operator ++(int); + bool operator != (const Iterator &other); + Value operator*(); + + std::string key(); + Value& value(); + + }; + + + + Value readJson(const std::string &data); + Value readJson(std::istream &stream); + std::ostream &operator << (std::ostream &stream, const Value& value); //serializes json data + + +} \ No newline at end of file diff --git a/lib/serial/include/impl/unix.h b/lib/serial/include/impl/unix.h new file mode 100644 index 0000000..1c81f79 --- /dev/null +++ b/lib/serial/include/impl/unix.h @@ -0,0 +1,221 @@ +/*! + * \file serial/impl/unix.h + * \author William Woodall + * \author John Harrison + * \version 0.1 + * + * \section LICENSE + * + * The MIT License + * + * Copyright (c) 2012 William Woodall, John Harrison + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * \section DESCRIPTION + * + * This provides a unix based pimpl for the Serial class. This implementation is + * based off termios.h and uses select for multiplexing the IO ports. + * + */ + +#if !defined(_WIN32) + +#ifndef SERIAL_IMPL_UNIX_H +#define SERIAL_IMPL_UNIX_H + + +#include +#include "../serial.h" + +namespace serial { + +using std::size_t; +using std::string; +using std::invalid_argument; + +using serial::SerialException; +using serial::IOException; + +class MillisecondTimer { +public: + MillisecondTimer(const uint32_t millis); + int64_t remaining(); + +private: + static timespec timespec_now(); + timespec expiry; +}; + +class serial::Serial::SerialImpl { +public: + SerialImpl (const string &port, + unsigned long baudrate, + bytesize_t bytesize, + parity_t parity, + stopbits_t stopbits, + flowcontrol_t flowcontrol); + + virtual ~SerialImpl (); + + void + open (); + + void + close (); + + bool + isOpen () const; + + size_t + available (); + + bool + waitReadable (uint32_t timeout); + + void + waitByteTimes (size_t count); + + size_t + read (uint8_t *buf, size_t size = 1); + + size_t + write (const uint8_t *data, size_t length); + + void + flush (); + + void + flushInput (); + + void + flushOutput (); + + void + sendBreak (int duration); + + void + setBreak (bool level); + + void + setRTS (bool level); + + void + setDTR (bool level); + + bool + waitForChange (); + + bool + getCTS (); + + bool + getDSR (); + + bool + getRI (); + + bool + getCD (); + + void + setPort (const string &port); + + string + getPort () const; + + void + setTimeout (Timeout &timeout); + + Timeout + getTimeout () const; + + void + setBaudrate (unsigned long baudrate); + + unsigned long + getBaudrate () const; + + void + setBytesize (bytesize_t bytesize); + + bytesize_t + getBytesize () const; + + void + setParity (parity_t parity); + + parity_t + getParity () const; + + void + setStopbits (stopbits_t stopbits); + + stopbits_t + getStopbits () const; + + void + setFlowcontrol (flowcontrol_t flowcontrol); + + flowcontrol_t + getFlowcontrol () const; + + void + readLock (); + + void + readUnlock (); + + void + writeLock (); + + void + writeUnlock (); + +protected: + void reconfigurePort (); + +private: + string port_; // Path to the file descriptor + int fd_; // The current file descriptor + + bool is_open_; + bool xonxoff_; + bool rtscts_; + + Timeout timeout_; // Timeout for read operations + unsigned long baudrate_; // Baudrate + uint32_t byte_time_ns_; // Nanoseconds to transmit/receive a single byte + + parity_t parity_; // Parity + bytesize_t bytesize_; // Size of the bytes + stopbits_t stopbits_; // Stop Bits + flowcontrol_t flowcontrol_; // Flow Control + + // Mutex used to lock the read functions + pthread_mutex_t read_mutex; + // Mutex used to lock the write functions + pthread_mutex_t write_mutex; +}; + +} + +#endif // SERIAL_IMPL_UNIX_H + +#endif // !defined(_WIN32) diff --git a/lib/serial/include/impl/win.h b/lib/serial/include/impl/win.h new file mode 100644 index 0000000..dfb37b6 --- /dev/null +++ b/lib/serial/include/impl/win.h @@ -0,0 +1,207 @@ +/*! + * \file serial/impl/windows.h + * \author William Woodall + * \author John Harrison + * \version 0.1 + * + * \section LICENSE + * + * The MIT License + * + * Copyright (c) 2012 William Woodall, John Harrison + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * \section DESCRIPTION + * + * This provides a windows implementation of the Serial class interface. + * + */ + +#if defined(_WIN32) + +#ifndef SERIAL_IMPL_WINDOWS_H +#define SERIAL_IMPL_WINDOWS_H + +#include "include/serial.h" + +#include "windows.h" + +namespace serial { + +using std::string; +using std::wstring; +using std::invalid_argument; + +using serial::SerialException; +using serial::IOException; + +class serial::Serial::SerialImpl { +public: + SerialImpl (const string &port, + unsigned long baudrate, + bytesize_t bytesize, + parity_t parity, + stopbits_t stopbits, + flowcontrol_t flowcontrol); + + virtual ~SerialImpl (); + + void + open (); + + void + close (); + + bool + isOpen () const; + + size_t + available (); + + bool + waitReadable (uint32_t timeout); + + void + waitByteTimes (size_t count); + + size_t + read (uint8_t *buf, size_t size = 1); + + size_t + write (const uint8_t *data, size_t length); + + void + flush (); + + void + flushInput (); + + void + flushOutput (); + + void + sendBreak (int duration); + + void + setBreak (bool level); + + void + setRTS (bool level); + + void + setDTR (bool level); + + bool + waitForChange (); + + bool + getCTS (); + + bool + getDSR (); + + bool + getRI (); + + bool + getCD (); + + void + setPort (const string &port); + + string + getPort () const; + + void + setTimeout (Timeout &timeout); + + Timeout + getTimeout () const; + + void + setBaudrate (unsigned long baudrate); + + unsigned long + getBaudrate () const; + + void + setBytesize (bytesize_t bytesize); + + bytesize_t + getBytesize () const; + + void + setParity (parity_t parity); + + parity_t + getParity () const; + + void + setStopbits (stopbits_t stopbits); + + stopbits_t + getStopbits () const; + + void + setFlowcontrol (flowcontrol_t flowcontrol); + + flowcontrol_t + getFlowcontrol () const; + + void + readLock (); + + void + readUnlock (); + + void + writeLock (); + + void + writeUnlock (); + +protected: + void reconfigurePort (); + +private: + wstring port_; // Path to the file descriptor + HANDLE fd_; + + bool is_open_; + + Timeout timeout_; // Timeout for read operations + unsigned long baudrate_; // Baudrate + + parity_t parity_; // Parity + bytesize_t bytesize_; // Size of the bytes + stopbits_t stopbits_; // Stop Bits + flowcontrol_t flowcontrol_; // Flow Control + + // Mutex used to lock the read functions + HANDLE read_mutex; + // Mutex used to lock the write functions + HANDLE write_mutex; +}; + +} + +#endif // SERIAL_IMPL_WINDOWS_H + +#endif // if defined(_WIN32) diff --git a/lib/serial/include/serial.h b/lib/serial/include/serial.h new file mode 100644 index 0000000..ec03506 --- /dev/null +++ b/lib/serial/include/serial.h @@ -0,0 +1,772 @@ +/*! + * \file serial/serial.h + * \author William Woodall + * \author John Harrison + * \version 0.1 + * + * \section LICENSE + * + * The MIT License + * + * Copyright (c) 2012 William Woodall + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * \section DESCRIPTION + * + * This provides a cross platform interface for interacting with Serial Ports. + */ + +#ifndef SERIAL_H +#define SERIAL_H + +#include +#include +#include +#include +#include +#include +#include + +#define THROW(exceptionClass, message) throw exceptionClass(__FILE__, \ +__LINE__, (message) ) + +namespace serial { + +/*! + * Enumeration defines the possible bytesizes for the serial port. + */ + typedef enum { + fivebits = 5, + sixbits = 6, + sevenbits = 7, + eightbits = 8 + } bytesize_t; + +/*! + * Enumeration defines the possible parity types for the serial port. + */ + typedef enum { + parity_none = 0, + parity_odd = 1, + parity_even = 2, + parity_mark = 3, + parity_space = 4 + } parity_t; + +/*! + * Enumeration defines the possible stopbit types for the serial port. + */ + typedef enum { + stopbits_one = 1, + stopbits_two = 2, + stopbits_one_point_five + } stopbits_t; + +/*! + * Enumeration defines the possible flowcontrol types for the serial port. + */ + typedef enum { + flowcontrol_none = 0, + flowcontrol_software, + flowcontrol_hardware + } flowcontrol_t; + +/*! + * Structure for setting the timeout of the serial port, times are + * in milliseconds. + * + * In order to disable the interbyte timeout, set it to Timeout::max(). + */ + struct Timeout { +#ifdef max +# undef max +#endif + static uint32_t max() {return std::numeric_limits::max();} + /*! + * Convenience function to generate Timeout structs using a + * single absolute timeout. + * + * \param timeout A long that defines the time in milliseconds until a + * timeout occurs after a call to read or write is made. + * + * \return Timeout struct that represents this simple timeout provided. + */ + static Timeout simpleTimeout(uint32_t timeout) { + return Timeout(max(), timeout, 0, timeout, 0); + } + + /*! Number of milliseconds between bytes received to timeout on. */ + uint32_t inter_byte_timeout; + /*! A constant number of milliseconds to wait after calling read. */ + uint32_t read_timeout_constant; + /*! A multiplier against the number of requested bytes to wait after + * calling read. + */ + uint32_t read_timeout_multiplier; + /*! A constant number of milliseconds to wait after calling write. */ + uint32_t write_timeout_constant; + /*! A multiplier against the number of requested bytes to wait after + * calling write. + */ + uint32_t write_timeout_multiplier; + + explicit Timeout (uint32_t inter_byte_timeout_=0, + uint32_t read_timeout_constant_=0, + uint32_t read_timeout_multiplier_=0, + uint32_t write_timeout_constant_=0, + uint32_t write_timeout_multiplier_=0) + : inter_byte_timeout(inter_byte_timeout_), + read_timeout_constant(read_timeout_constant_), + read_timeout_multiplier(read_timeout_multiplier_), + write_timeout_constant(write_timeout_constant_), + write_timeout_multiplier(write_timeout_multiplier_) + {} + }; + +/*! + * Class that provides a portable serial port interface. + */ + class Serial { + public: + /*! + * Creates a Serial object and opens the port if a port is specified, + * otherwise it remains closed until serial::Serial::open is called. + * + * \param port A std::string containing the address of the serial port, + * which would be something like 'COM1' on Windows and '/dev/ttyS0' + * on Linux. + * + * \param baudrate An unsigned 32-bit integer that represents the baudrate + * + * \param timeout A serial::Timeout struct that defines the timeout + * conditions for the serial port. \see serial::Timeout + * + * \param bytesize Size of each byte in the serial transmission of data, + * default is eightbits, possible values are: fivebits, sixbits, sevenbits, + * eightbits + * + * \param parity Method of parity, default is parity_none, possible values + * are: parity_none, parity_odd, parity_even + * + * \param stopbits Number of stop bits used, default is stopbits_one, + * possible values are: stopbits_one, stopbits_one_point_five, stopbits_two + * + * \param flowcontrol Type of flowcontrol used, default is + * flowcontrol_none, possible values are: flowcontrol_none, + * flowcontrol_software, flowcontrol_hardware + * + * \throw serial::PortNotOpenedException + * \throw serial::IOException + * \throw std::invalid_argument + */ + Serial (const std::string &port = "", + uint32_t baudrate = 9600, + Timeout timeout = Timeout(), + bytesize_t bytesize = eightbits, + parity_t parity = parity_none, + stopbits_t stopbits = stopbits_one, + flowcontrol_t flowcontrol = flowcontrol_none); + + /*! Destructor */ + virtual ~Serial (); + + /*! + * Opens the serial port as long as the port is set and the port isn't + * already open. + * + * If the port is provided to the constructor then an explicit call to open + * is not needed. + * + * \see Serial::Serial + * + * \throw std::invalid_argument + * \throw serial::SerialException + * \throw serial::IOException + */ + void + open (); + + /*! Gets the open status of the serial port. + * + * \return Returns true if the port is open, false otherwise. + */ + bool + isOpen () const; + + /*! Closes the serial port. */ + void + close (); + + /*! Return the number of characters in the buffer. */ + size_t + available (); + + /*! Block until there is serial data to read or read_timeout_constant + * number of milliseconds have elapsed. The return value is true when + * the function exits with the port in a readable state, false otherwise + * (due to timeout or select interruption). */ + bool + waitReadable (); + + /*! Block for a period of time corresponding to the transmission time of + * count characters at present serial settings. This may be used in con- + * junction with waitReadable to read larger blocks of data from the + * port. */ + void + waitByteTimes (size_t count); + + /*! Read a given amount of bytes from the serial port into a given buffer. + * + * The read function will return in one of three cases: + * * The number of requested bytes was read. + * * In this case the number of bytes requested will match the size_t + * returned by read. + * * A timeout occurred, in this case the number of bytes read will not + * match the amount requested, but no exception will be thrown. One of + * two possible timeouts occurred: + * * The inter byte timeout expired, this means that number of + * milliseconds elapsed between receiving bytes from the serial port + * exceeded the inter byte timeout. + * * The total timeout expired, which is calculated by multiplying the + * read timeout multiplier by the number of requested bytes and then + * added to the read timeout constant. If that total number of + * milliseconds elapses after the initial call to read a timeout will + * occur. + * * An exception occurred, in this case an actual exception will be thrown. + * + * \param buffer An uint8_t array of at least the requested size. + * \param size A size_t defining how many bytes to be read. + * + * \return A size_t representing the number of bytes read as a result of the + * call to read. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + */ + size_t + read (uint8_t *buffer, size_t size); + + /*! Read a given amount of bytes from the serial port into a give buffer. + * + * \param buffer A reference to a std::vector of uint8_t. + * \param size A size_t defining how many bytes to be read. + * + * \return A size_t representing the number of bytes read as a result of the + * call to read. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + */ + size_t + read (std::vector &buffer, size_t size = 1); + + /*! Read a given amount of bytes from the serial port into a give buffer. + * + * \param buffer A reference to a std::string. + * \param size A size_t defining how many bytes to be read. + * + * \return A size_t representing the number of bytes read as a result of the + * call to read. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + */ + size_t + read (std::string &buffer, size_t size = 1); + + /*! Read a given amount of bytes from the serial port and return a string + * containing the data. + * + * \param size A size_t defining how many bytes to be read. + * + * \return A std::string containing the data read from the port. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + */ + std::string + read (size_t size = 1); + + /*! Reads in a line or until a given delimiter has been processed. + * + * Reads from the serial port until a single line has been read. + * + * \param buffer A std::string reference used to store the data. + * \param size A maximum length of a line, defaults to 65536 (2^16) + * \param eol A string to match against for the EOL. + * + * \return A size_t representing the number of bytes read. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + */ + size_t + readline (std::string &buffer, size_t size = 65536, std::string eol = "\n"); + + /*! Reads in a line or until a given delimiter has been processed. + * + * Reads from the serial port until a single line has been read. + * + * \param size A maximum length of a line, defaults to 65536 (2^16) + * \param eol A string to match against for the EOL. + * + * \return A std::string containing the line. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + */ + std::string + readline (size_t size = 65536, std::string eol = "\n"); + + /*! Reads in multiple lines until the serial port times out. + * + * This requires a timeout > 0 before it can be run. It will read until a + * timeout occurs and return a list of strings. + * + * \param size A maximum length of combined lines, defaults to 65536 (2^16) + * + * \param eol A string to match against for the EOL. + * + * \return A vector containing the lines. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + */ + std::vector + readlines (size_t size = 65536, std::string eol = "\n"); + + /*! Write a string to the serial port. + * + * \param data A const reference containing the data to be written + * to the serial port. + * + * \param size A size_t that indicates how many bytes should be written from + * the given data buffer. + * + * \return A size_t representing the number of bytes actually written to + * the serial port. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + * \throw serial::IOException + */ + size_t + write (const uint8_t *data, size_t size); + + /*! Write a string to the serial port. + * + * \param data A const reference containing the data to be written + * to the serial port. + * + * \return A size_t representing the number of bytes actually written to + * the serial port. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + * \throw serial::IOException + */ + size_t + write (const std::vector &data); + + /*! Write a string to the serial port. + * + * \param data A const reference containing the data to be written + * to the serial port. + * + * \return A size_t representing the number of bytes actually written to + * the serial port. + * + * \throw serial::PortNotOpenedException + * \throw serial::SerialException + * \throw serial::IOException + */ + size_t + write (const std::string &data); + + /*! Sets the serial port identifier. + * + * \param port A const std::string reference containing the address of the + * serial port, which would be something like 'COM1' on Windows and + * '/dev/ttyS0' on Linux. + * + * \throw std::invalid_argument + */ + void + setPort (const std::string &port); + + /*! Gets the serial port identifier. + * + * \see Serial::setPort + * + * \throw std::invalid_argument + */ + std::string + getPort () const; + + /*! Sets the timeout for reads and writes using the Timeout struct. + * + * There are two timeout conditions described here: + * * The inter byte timeout: + * * The inter_byte_timeout component of serial::Timeout defines the + * maximum amount of time, in milliseconds, between receiving bytes on + * the serial port that can pass before a timeout occurs. Setting this + * to zero will prevent inter byte timeouts from occurring. + * * Total time timeout: + * * The constant and multiplier component of this timeout condition, + * for both read and write, are defined in serial::Timeout. This + * timeout occurs if the total time since the read or write call was + * made exceeds the specified time in milliseconds. + * * The limit is defined by multiplying the multiplier component by the + * number of requested bytes and adding that product to the constant + * component. In this way if you want a read call, for example, to + * timeout after exactly one second regardless of the number of bytes + * you asked for then set the read_timeout_constant component of + * serial::Timeout to 1000 and the read_timeout_multiplier to zero. + * This timeout condition can be used in conjunction with the inter + * byte timeout condition with out any problems, timeout will simply + * occur when one of the two timeout conditions is met. This allows + * users to have maximum control over the trade-off between + * responsiveness and efficiency. + * + * Read and write functions will return in one of three cases. When the + * reading or writing is complete, when a timeout occurs, or when an + * exception occurs. + * + * \param timeout A serial::Timeout struct containing the inter byte + * timeout, and the read and write timeout constants and multipliers. + * + * \see serial::Timeout + */ + void + setTimeout (Timeout &timeout); + + /*! Sets the timeout for reads and writes. */ + void + setTimeout (uint32_t inter_byte_timeout, uint32_t read_timeout_constant, + uint32_t read_timeout_multiplier, uint32_t write_timeout_constant, + uint32_t write_timeout_multiplier) + { + Timeout timeout(inter_byte_timeout, read_timeout_constant, + read_timeout_multiplier, write_timeout_constant, + write_timeout_multiplier); + return setTimeout(timeout); + } + + /*! Gets the timeout for reads in seconds. + * + * \return A Timeout struct containing the inter_byte_timeout, and read + * and write timeout constants and multipliers. + * + * \see Serial::setTimeout + */ + Timeout + getTimeout () const; + + /*! Sets the baudrate for the serial port. + * + * Possible baudrates depends on the system but some safe baudrates include: + * 110, 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 56000, + * 57600, 115200 + * Some other baudrates that are supported by some comports: + * 128000, 153600, 230400, 256000, 460800, 921600 + * + * \param baudrate An integer that sets the baud rate for the serial port. + * + * \throw std::invalid_argument + */ + void + setBaudrate (uint32_t baudrate); + + /*! Gets the baudrate for the serial port. + * + * \return An integer that sets the baud rate for the serial port. + * + * \see Serial::setBaudrate + * + * \throw std::invalid_argument + */ + uint32_t + getBaudrate () const; + + /*! Sets the bytesize for the serial port. + * + * \param bytesize Size of each byte in the serial transmission of data, + * default is eightbits, possible values are: fivebits, sixbits, sevenbits, + * eightbits + * + * \throw std::invalid_argument + */ + void + setBytesize (bytesize_t bytesize); + + /*! Gets the bytesize for the serial port. + * + * \see Serial::setBytesize + * + * \throw std::invalid_argument + */ + bytesize_t + getBytesize () const; + + /*! Sets the parity for the serial port. + * + * \param parity Method of parity, default is parity_none, possible values + * are: parity_none, parity_odd, parity_even + * + * \throw std::invalid_argument + */ + void + setParity (parity_t parity); + + /*! Gets the parity for the serial port. + * + * \see Serial::setParity + * + * \throw std::invalid_argument + */ + parity_t + getParity () const; + + /*! Sets the stopbits for the serial port. + * + * \param stopbits Number of stop bits used, default is stopbits_one, + * possible values are: stopbits_one, stopbits_one_point_five, stopbits_two + * + * \throw std::invalid_argument + */ + void + setStopbits (stopbits_t stopbits); + + /*! Gets the stopbits for the serial port. + * + * \see Serial::setStopbits + * + * \throw std::invalid_argument + */ + stopbits_t + getStopbits () const; + + /*! Sets the flow control for the serial port. + * + * \param flowcontrol Type of flowcontrol used, default is flowcontrol_none, + * possible values are: flowcontrol_none, flowcontrol_software, + * flowcontrol_hardware + * + * \throw std::invalid_argument + */ + void + setFlowcontrol (flowcontrol_t flowcontrol); + + /*! Gets the flow control for the serial port. + * + * \see Serial::setFlowcontrol + * + * \throw std::invalid_argument + */ + flowcontrol_t + getFlowcontrol () const; + + /*! Flush the input and output buffers */ + void + flush (); + + /*! Flush only the input buffer */ + void + flushInput (); + + /*! Flush only the output buffer */ + void + flushOutput (); + + /*! Sends the RS-232 break signal. See tcsendbreak(3). */ + void + sendBreak (int duration); + + /*! Set the break condition to a given level. Defaults to true. */ + void + setBreak (bool level = true); + + /*! Set the RTS handshaking line to the given level. Defaults to true. */ + void + setRTS (bool level = true); + + /*! Set the DTR handshaking line to the given level. Defaults to true. */ + void + setDTR (bool level = true); + + /*! + * Blocks until CTS, DSR, RI, CD changes or something interrupts it. + * + * Can throw an exception if an error occurs while waiting. + * You can check the status of CTS, DSR, RI, and CD once this returns. + * Uses TIOCMIWAIT via ioctl if available (mostly only on Linux) with a + * resolution of less than +-1ms and as good as +-0.2ms. Otherwise a + * polling method is used which can give +-2ms. + * + * \return Returns true if one of the lines changed, false if something else + * occurred. + * + * \throw SerialException + */ + bool + waitForChange (); + + /*! Returns the current status of the CTS line. */ + bool + getCTS (); + + /*! Returns the current status of the DSR line. */ + bool + getDSR (); + + /*! Returns the current status of the RI line. */ + bool + getRI (); + + /*! Returns the current status of the CD line. */ + bool + getCD (); + + private: + // Disable copy constructors + Serial(const Serial&); + Serial& operator=(const Serial&); + + // Pimpl idiom, d_pointer + class SerialImpl; + SerialImpl *pimpl_; + + // Scoped Lock Classes + class ScopedReadLock; + class ScopedWriteLock; + + // Read common function + size_t + read_ (uint8_t *buffer, size_t size); + // Write common function + size_t + write_ (const uint8_t *data, size_t length); + + }; + + class SerialException : public std::exception + { + // Disable copy constructors + SerialException& operator=(const SerialException&); + std::string e_what_; + public: + SerialException (const char *description) { + std::stringstream ss; + ss << "SerialException " << description << " failed."; + e_what_ = ss.str(); + } + SerialException (const SerialException& other) : e_what_(other.e_what_) {} + virtual ~SerialException() throw() {} + virtual const char* what () const throw () { + return e_what_.c_str(); + } + }; + + class IOException : public std::exception + { + // Disable copy constructors + IOException& operator=(const IOException&); + std::string file_; + int line_; + std::string e_what_; + int errno_; + public: + explicit IOException (std::string file, int line, int errnum) + : file_(file), line_(line), errno_(errnum) { + std::stringstream ss; +#if defined(_WIN32) && !defined(__MINGW32__) + char error_str [1024]; + strerror_s(error_str, 1024, errnum); +#else + char * error_str = strerror(errnum); +#endif + ss << "IO Exception (" << errno_ << "): " << error_str; + ss << ", file " << file_ << ", line " << line_ << "."; + e_what_ = ss.str(); + } + explicit IOException (std::string file, int line, const char * description) + : file_(file), line_(line), errno_(0) { + std::stringstream ss; + ss << "IO Exception: " << description; + ss << ", file " << file_ << ", line " << line_ << "."; + e_what_ = ss.str(); + } + virtual ~IOException() throw() {} + IOException (const IOException& other) : line_(other.line_), e_what_(other.e_what_), errno_(other.errno_) {} + + int getErrorNumber () { return errno_; } + + virtual const char* what () const throw () { + return e_what_.c_str(); + } + }; + + class PortNotOpenedException : public std::exception + { + // Disable copy constructors + const PortNotOpenedException& operator=(PortNotOpenedException); + std::string e_what_; + public: + PortNotOpenedException (const char * description) { + std::stringstream ss; + ss << "PortNotOpenedException " << description << " failed."; + e_what_ = ss.str(); + } + PortNotOpenedException (const PortNotOpenedException& other) : e_what_(other.e_what_) {} + virtual ~PortNotOpenedException() throw() {} + virtual const char* what () const throw () { + return e_what_.c_str(); + } + }; + +/*! + * Structure that describes a serial device. + */ + struct PortInfo { + + /*! Address of the serial port (this can be passed to the constructor of Serial). */ + std::string port; + + /*! Human readable description of serial device if available. */ + std::string description; + + /*! Hardware ID (e.g. VID:PID of USB serial devices) or "n/a" if not available. */ + std::string hardware_id; + + }; + +/* Lists the serial ports available on the system + * + * Returns a vector of available serial ports, each represented + * by a serial::PortInfo data structure: + * + * \return vector of serial::PortInfo. + */ + std::vector + list_ports(); + +} // namespace serial + +#endif \ No newline at end of file diff --git a/lib/serial/include/v8stdint.h b/lib/serial/include/v8stdint.h new file mode 100644 index 0000000..7a7b3df --- /dev/null +++ b/lib/serial/include/v8stdint.h @@ -0,0 +1,57 @@ +// This header is from the v8 google project: +// http://code.google.com/p/v8/source/browse/trunk/include/v8stdint.h + +// Copyright 2012 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Load definitions of standard types. + +#ifndef V8STDINT_H_ +#define V8STDINT_H_ + +#include +#include + +#if defined(_WIN32) && !defined(__MINGW32__) + +typedef signed char int8_t; +typedef unsigned char uint8_t; +typedef short int16_t; // NOLINT +typedef unsigned short uint16_t; // NOLINT +typedef int int32_t; +typedef unsigned int uint32_t; +typedef __int64 int64_t; +typedef unsigned __int64 uint64_t; +// intptr_t and friends are defined in crtdefs.h through stdio.h. + +#else + +#include + +#endif + +#endif // V8STDINT_H_ diff --git a/lib/serial/src/impl/list_ports/list_ports_linux.cc b/lib/serial/src/impl/list_ports/list_ports_linux.cc new file mode 100644 index 0000000..3a2533d --- /dev/null +++ b/lib/serial/src/impl/list_ports/list_ports_linux.cc @@ -0,0 +1,335 @@ +#if defined(__linux__) + +/* + * Copyright (c) 2014 Craig Lilley + * This software is made available under the terms of the MIT licence. + * A copy of the licence can be obtained from: + * http://opensource.org/licenses/MIT + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include "../../../include/serial.h" + + +using serial::PortInfo; +using std::istringstream; +using std::ifstream; +using std::getline; +using std::vector; +using std::string; +using std::cout; +using std::endl; + +static vector glob(const vector& patterns); +static string basename(const string& path); +static string dirname(const string& path); +static bool path_exists(const string& path); +static string realpath(const string& path); +static string usb_sysfs_friendly_name(const string& sys_usb_path); +static vector get_sysfs_info(const string& device_path); +static string read_line(const string& file); +static string usb_sysfs_hw_string(const string& sysfs_path); +static string format(const char* format, ...); + +vector +glob(const vector& patterns) +{ + vector paths_found; + + if(patterns.size() == 0) + return paths_found; + + glob_t glob_results; + + int glob_retval = glob(patterns[0].c_str(), 0, NULL, &glob_results); + + vector::const_iterator iter = patterns.begin(); + + while(++iter != patterns.end()) + { + glob_retval = glob(iter->c_str(), GLOB_APPEND, NULL, &glob_results); + } + + for(int path_index = 0; path_index < glob_results.gl_pathc; path_index++) + { + paths_found.push_back(glob_results.gl_pathv[path_index]); + } + + globfree(&glob_results); + + return paths_found; +} + +string +basename(const string& path) +{ + size_t pos = path.rfind("/"); + + if(pos == std::string::npos) + return path; + + return string(path, pos+1, string::npos); +} + +string +dirname(const string& path) +{ + size_t pos = path.rfind("/"); + + if(pos == std::string::npos) + return path; + else if(pos == 0) + return "/"; + + return string(path, 0, pos); +} + +bool +path_exists(const string& path) +{ + struct stat sb; + + if( stat(path.c_str(), &sb ) == 0 ) + return true; + + return false; +} + +string +realpath(const string& path) +{ + char* real_path = realpath(path.c_str(), NULL); + + string result; + + if(real_path != NULL) + { + result = real_path; + + free(real_path); + } + + return result; +} + +string +usb_sysfs_friendly_name(const string& sys_usb_path) +{ + unsigned int device_number = 0; + + istringstream( read_line(sys_usb_path + "/devnum") ) >> device_number; + + string manufacturer = read_line( sys_usb_path + "/manufacturer" ); + + string product = read_line( sys_usb_path + "/product" ); + + string serial = read_line( sys_usb_path + "/serial" ); + + if( manufacturer.empty() && product.empty() && serial.empty() ) + return ""; + + return format("%s %s %s", manufacturer.c_str(), product.c_str(), serial.c_str() ); +} + +vector +get_sysfs_info(const string& device_path) +{ + string device_name = basename( device_path ); + + string friendly_name; + + string hardware_id; + + string sys_device_path = format( "/sys/class/tty/%s/device", device_name.c_str() ); + + if( device_name.compare(0,6,"ttyUSB") == 0 ) + { + sys_device_path = dirname( dirname( realpath( sys_device_path ) ) ); + + if( path_exists( sys_device_path ) ) + { + friendly_name = usb_sysfs_friendly_name( sys_device_path ); + + hardware_id = usb_sysfs_hw_string( sys_device_path ); + } + } + else if( device_name.compare(0,6,"ttyACM") == 0 ) + { + sys_device_path = dirname( realpath( sys_device_path ) ); + + if( path_exists( sys_device_path ) ) + { + friendly_name = usb_sysfs_friendly_name( sys_device_path ); + + hardware_id = usb_sysfs_hw_string( sys_device_path ); + } + } + else + { + // Try to read ID string of PCI device + + string sys_id_path = sys_device_path + "/id"; + + if( path_exists( sys_id_path ) ) + hardware_id = read_line( sys_id_path ); + } + + if( friendly_name.empty() ) + friendly_name = device_name; + + if( hardware_id.empty() ) + hardware_id = "n/a"; + + vector result; + result.push_back(friendly_name); + result.push_back(hardware_id); + + return result; +} + +string +read_line(const string& file) +{ + ifstream ifs(file.c_str(), ifstream::in); + + string line; + + if(ifs) + { + getline(ifs, line); + } + + return line; +} + +string +format(const char* format, ...) +{ + va_list ap; + + size_t buffer_size_bytes = 256; + + string result; + + char* buffer = (char*)malloc(buffer_size_bytes); + + if( buffer == NULL ) + return result; + + bool done = false; + + unsigned int loop_count = 0; + + while(!done) + { + va_start(ap, format); + + int return_value = vsnprintf(buffer, buffer_size_bytes, format, ap); + + if( return_value < 0 ) + { + done = true; + } + else if( return_value >= buffer_size_bytes ) + { + // Realloc and try again. + + buffer_size_bytes = return_value + 1; + + char* new_buffer_ptr = (char*)realloc(buffer, buffer_size_bytes); + + if( new_buffer_ptr == NULL ) + { + done = true; + } + else + { + buffer = new_buffer_ptr; + } + } + else + { + result = buffer; + done = true; + } + + va_end(ap); + + if( ++loop_count > 5 ) + done = true; + } + + free(buffer); + + return result; +} + +string +usb_sysfs_hw_string(const string& sysfs_path) +{ + string serial_number = read_line( sysfs_path + "/serial" ); + + if( serial_number.length() > 0 ) + { + serial_number = format( "SNR=%s", serial_number.c_str() ); + } + + string vid = read_line( sysfs_path + "/idVendor" ); + + string pid = read_line( sysfs_path + "/idProduct" ); + + return format("USB VID:PID=%s:%s %s", vid.c_str(), pid.c_str(), serial_number.c_str() ); +} + +vector +serial::list_ports() +{ + vector results; + + vector search_globs; + search_globs.push_back("/dev/ttyACM*"); + search_globs.push_back("/dev/ttyS*"); + search_globs.push_back("/dev/ttyUSB*"); + search_globs.push_back("/dev/tty.*"); + search_globs.push_back("/dev/cu.*"); + + vector devices_found = glob( search_globs ); + + vector::iterator iter = devices_found.begin(); + + while( iter != devices_found.end() ) + { + string device = *iter++; + + vector sysfs_info = get_sysfs_info( device ); + + string friendly_name = sysfs_info[0]; + + string hardware_id = sysfs_info[1]; + + PortInfo device_entry; + device_entry.port = device; + device_entry.description = friendly_name; + device_entry.hardware_id = hardware_id; + + results.push_back( device_entry ); + + } + + return results; +} + +#endif // defined(__linux__) diff --git a/lib/serial/src/impl/list_ports/list_ports_osx.cc b/lib/serial/src/impl/list_ports/list_ports_osx.cc new file mode 100644 index 0000000..436cfd0 --- /dev/null +++ b/lib/serial/src/impl/list_ports/list_ports_osx.cc @@ -0,0 +1,286 @@ +#if defined(__APPLE__) + +#include +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include "serial/serial.h" + +using serial::PortInfo; +using std::string; +using std::vector; + +#define HARDWARE_ID_STRING_LENGTH 128 + +string cfstring_to_string( CFStringRef cfstring ); +string get_device_path( io_object_t& serial_port ); +string get_class_name( io_object_t& obj ); +io_registry_entry_t get_parent_iousb_device( io_object_t& serial_port ); +string get_string_property( io_object_t& device, const char* property ); +uint16_t get_int_property( io_object_t& device, const char* property ); +string rtrim(const string& str); + +string +cfstring_to_string( CFStringRef cfstring ) +{ + char cstring[MAXPATHLEN]; + string result; + + if( cfstring ) + { + Boolean success = CFStringGetCString( cfstring, + cstring, + sizeof(cstring), + kCFStringEncodingASCII ); + + if( success ) + result = cstring; + } + + return result; +} + +string +get_device_path( io_object_t& serial_port ) +{ + CFTypeRef callout_path; + string device_path; + + callout_path = IORegistryEntryCreateCFProperty( serial_port, + CFSTR(kIOCalloutDeviceKey), + kCFAllocatorDefault, + 0 ); + + if (callout_path) + { + if( CFGetTypeID(callout_path) == CFStringGetTypeID() ) + device_path = cfstring_to_string( static_cast(callout_path) ); + + CFRelease(callout_path); + } + + return device_path; +} + +string +get_class_name( io_object_t& obj ) +{ + string result; + io_name_t class_name; + kern_return_t kern_result; + + kern_result = IOObjectGetClass( obj, class_name ); + + if( kern_result == KERN_SUCCESS ) + result = class_name; + + return result; +} + +io_registry_entry_t +get_parent_iousb_device( io_object_t& serial_port ) +{ + io_object_t device = serial_port; + io_registry_entry_t parent = 0; + io_registry_entry_t result = 0; + kern_return_t kern_result = KERN_FAILURE; + string name = get_class_name(device); + + // Walk the IO Registry tree looking for this devices parent IOUSBDevice. + while( name != "IOUSBDevice" ) + { + kern_result = IORegistryEntryGetParentEntry( device, + kIOServicePlane, + &parent ); + + if(kern_result != KERN_SUCCESS) + { + result = 0; + break; + } + + device = parent; + + name = get_class_name(device); + } + + if(kern_result == KERN_SUCCESS) + result = device; + + return result; +} + +string +get_string_property( io_object_t& device, const char* property ) +{ + string property_name; + + if( device ) + { + CFStringRef property_as_cfstring = CFStringCreateWithCString ( + kCFAllocatorDefault, + property, + kCFStringEncodingASCII ); + + CFTypeRef name_as_cfstring = IORegistryEntryCreateCFProperty( + device, + property_as_cfstring, + kCFAllocatorDefault, + 0 ); + + if( name_as_cfstring ) + { + if( CFGetTypeID(name_as_cfstring) == CFStringGetTypeID() ) + property_name = cfstring_to_string( static_cast(name_as_cfstring) ); + + CFRelease(name_as_cfstring); + } + + if(property_as_cfstring) + CFRelease(property_as_cfstring); + } + + return property_name; +} + +uint16_t +get_int_property( io_object_t& device, const char* property ) +{ + uint16_t result = 0; + + if( device ) + { + CFStringRef property_as_cfstring = CFStringCreateWithCString ( + kCFAllocatorDefault, + property, + kCFStringEncodingASCII ); + + CFTypeRef number = IORegistryEntryCreateCFProperty( device, + property_as_cfstring, + kCFAllocatorDefault, + 0 ); + + if(property_as_cfstring) + CFRelease(property_as_cfstring); + + if( number ) + { + if( CFGetTypeID(number) == CFNumberGetTypeID() ) + { + bool success = CFNumberGetValue( static_cast(number), + kCFNumberSInt16Type, + &result ); + + if( !success ) + result = 0; + } + + CFRelease(number); + } + + } + + return result; +} + +string rtrim(const string& str) +{ + string result = str; + + string whitespace = " \t\f\v\n\r"; + + std::size_t found = result.find_last_not_of(whitespace); + + if (found != std::string::npos) + result.erase(found+1); + else + result.clear(); + + return result; +} + +vector +serial::list_ports(void) +{ + vector devices_found; + CFMutableDictionaryRef classes_to_match; + io_iterator_t serial_port_iterator; + io_object_t serial_port; + mach_port_t master_port; + kern_return_t kern_result; + + kern_result = IOMasterPort(MACH_PORT_NULL, &master_port); + + if(kern_result != KERN_SUCCESS) + return devices_found; + + classes_to_match = IOServiceMatching(kIOSerialBSDServiceValue); + + if (classes_to_match == NULL) + return devices_found; + + CFDictionarySetValue( classes_to_match, + CFSTR(kIOSerialBSDTypeKey), + CFSTR(kIOSerialBSDAllTypes) ); + + kern_result = IOServiceGetMatchingServices(master_port, classes_to_match, &serial_port_iterator); + + if (KERN_SUCCESS != kern_result) + return devices_found; + + while ( (serial_port = IOIteratorNext(serial_port_iterator)) ) + { + string device_path = get_device_path( serial_port ); + io_registry_entry_t parent = get_parent_iousb_device( serial_port ); + IOObjectRelease(serial_port); + + if( device_path.empty() ) + continue; + + PortInfo port_info; + port_info.port = device_path; + port_info.description = "n/a"; + port_info.hardware_id = "n/a"; + + string device_name = rtrim( get_string_property( parent, "USB Product Name" ) ); + string vendor_name = rtrim( get_string_property( parent, "USB Vendor Name") ); + string description = rtrim( vendor_name + " " + device_name ); + if( !description.empty() ) + port_info.description = description; + + string serial_number = rtrim(get_string_property( parent, "USB Serial Number" ) ); + uint16_t vendor_id = get_int_property( parent, "idVendor" ); + uint16_t product_id = get_int_property( parent, "idProduct" ); + + if( vendor_id && product_id ) + { + char cstring[HARDWARE_ID_STRING_LENGTH]; + + if(serial_number.empty()) + serial_number = "None"; + + int ret = snprintf( cstring, HARDWARE_ID_STRING_LENGTH, "USB VID:PID=%04x:%04x SNR=%s", + vendor_id, + product_id, + serial_number.c_str() ); + + if( (ret >= 0) && (ret < HARDWARE_ID_STRING_LENGTH) ) + port_info.hardware_id = cstring; + } + + devices_found.push_back(port_info); + } + + IOObjectRelease(serial_port_iterator); + return devices_found; +} + +#endif // defined(__APPLE__) diff --git a/lib/serial/src/impl/list_ports/list_ports_win.cc b/lib/serial/src/impl/list_ports/list_ports_win.cc new file mode 100644 index 0000000..d985fdd --- /dev/null +++ b/lib/serial/src/impl/list_ports/list_ports_win.cc @@ -0,0 +1,152 @@ +#if defined(_WIN32) + +/* + * Copyright (c) 2014 Craig Lilley + * This software is made available under the terms of the MIT licence. + * A copy of the licence can be obtained from: + * http://opensource.org/licenses/MIT + */ + +#include "include/serial.h" +#include +#include +#include +#include +#include +#include + +using serial::PortInfo; +using std::vector; +using std::string; + +static const DWORD port_name_max_length = 256; +static const DWORD friendly_name_max_length = 256; +static const DWORD hardware_id_max_length = 256; + +// Convert a wide Unicode string to an UTF8 string +std::string utf8_encode(const std::wstring &wstr) +{ + int size_needed = WideCharToMultiByte(CP_UTF8, 0, &wstr[0], (int)wstr.size(), NULL, 0, NULL, NULL); + std::string strTo( size_needed, 0 ); + WideCharToMultiByte (CP_UTF8, 0, &wstr[0], (int)wstr.size(), &strTo[0], size_needed, NULL, NULL); + return strTo; +} + +vector +serial::list_ports() +{ + vector devices_found; + + HDEVINFO device_info_set = SetupDiGetClassDevs( + (const GUID *) &GUID_DEVCLASS_PORTS, + NULL, + NULL, + DIGCF_PRESENT); + + unsigned int device_info_set_index = 0; + SP_DEVINFO_DATA device_info_data; + + device_info_data.cbSize = sizeof(SP_DEVINFO_DATA); + + while(SetupDiEnumDeviceInfo(device_info_set, device_info_set_index, &device_info_data)) + { + device_info_set_index++; + + // Get port name + + HKEY hkey = SetupDiOpenDevRegKey( + device_info_set, + &device_info_data, + DICS_FLAG_GLOBAL, + 0, + DIREG_DEV, + KEY_READ); + + TCHAR port_name[port_name_max_length]; + DWORD port_name_length = port_name_max_length; + + LONG return_code = RegQueryValueEx( + hkey, + _T("PortName"), + NULL, + NULL, + (LPBYTE)port_name, + &port_name_length); + + RegCloseKey(hkey); + + if(return_code != EXIT_SUCCESS) + continue; + + if(port_name_length > 0 && port_name_length <= port_name_max_length) + port_name[port_name_length-1] = '\0'; + else + port_name[0] = '\0'; + + // Ignore parallel ports + + if(_tcsstr(port_name, _T("LPT")) != NULL) + continue; + + // Get port friendly name + + TCHAR friendly_name[friendly_name_max_length]; + DWORD friendly_name_actual_length = 0; + + BOOL got_friendly_name = SetupDiGetDeviceRegistryProperty( + device_info_set, + &device_info_data, + SPDRP_FRIENDLYNAME, + NULL, + (PBYTE)friendly_name, + friendly_name_max_length, + &friendly_name_actual_length); + + if(got_friendly_name == TRUE && friendly_name_actual_length > 0) + friendly_name[friendly_name_actual_length-1] = '\0'; + else + friendly_name[0] = '\0'; + + // Get hardware ID + + TCHAR hardware_id[hardware_id_max_length]; + DWORD hardware_id_actual_length = 0; + + BOOL got_hardware_id = SetupDiGetDeviceRegistryProperty( + device_info_set, + &device_info_data, + SPDRP_HARDWAREID, + NULL, + (PBYTE)hardware_id, + hardware_id_max_length, + &hardware_id_actual_length); + + if(got_hardware_id == TRUE && hardware_id_actual_length > 0) + hardware_id[hardware_id_actual_length-1] = '\0'; + else + hardware_id[0] = '\0'; + + #ifdef UNICODE + std::string portName = utf8_encode(port_name); + std::string friendlyName = utf8_encode(friendly_name); + std::string hardwareId = utf8_encode(hardware_id); + #else + std::string portName = port_name; + std::string friendlyName = friendly_name; + std::string hardwareId = hardware_id; + #endif + + PortInfo port_entry; + port_entry.port = portName; + port_entry.description = friendlyName; + port_entry.hardware_id = hardwareId; + + devices_found.push_back(port_entry); + } + + SetupDiDestroyDeviceInfoList(device_info_set); + + return devices_found; +} + +#endif // #if defined(_WIN32) diff --git a/lib/serial/src/impl/unix.cc b/lib/serial/src/impl/unix.cc new file mode 100644 index 0000000..b03362f --- /dev/null +++ b/lib/serial/src/impl/unix.cc @@ -0,0 +1,1058 @@ +/* Copyright 2012 William Woodall and John Harrison + * + * Additional Contributors: Christopher Baker @bakercp + */ + +#if !defined(_WIN32) + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#if defined(__linux__) +# include +#endif + +#include +#include +#include +#ifdef __MACH__ +#include +#include +#include +#endif + +#include "../../include/impl/unix.h" + +#ifndef TIOCINQ +#ifdef FIONREAD +#define TIOCINQ FIONREAD +#else +#define TIOCINQ 0x541B +#endif +#endif + +#if defined(MAC_OS_X_VERSION_10_3) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_3) +#include +#endif + +using std::string; +using std::stringstream; +using std::invalid_argument; +using serial::MillisecondTimer; +using serial::Serial; +using serial::SerialException; +using serial::PortNotOpenedException; +using serial::IOException; + + +MillisecondTimer::MillisecondTimer (const uint32_t millis) + : expiry(timespec_now()) +{ + int64_t tv_nsec = expiry.tv_nsec + (millis * 1e6); + if (tv_nsec >= 1e9) { + int64_t sec_diff = tv_nsec / static_cast (1e9); + expiry.tv_nsec = tv_nsec - static_cast (1e9 * sec_diff); + expiry.tv_sec += sec_diff; + } else { + expiry.tv_nsec = tv_nsec; + } +} + +int64_t +MillisecondTimer::remaining () +{ + timespec now(timespec_now()); + int64_t millis = (expiry.tv_sec - now.tv_sec) * 1e3; + millis += (expiry.tv_nsec - now.tv_nsec) / 1e6; + return millis; +} + +timespec +MillisecondTimer::timespec_now () +{ + timespec time; +# ifdef __MACH__ // OS X does not have clock_gettime, use clock_get_time + clock_serv_t cclock; + mach_timespec_t mts; + host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &cclock); + clock_get_time(cclock, &mts); + mach_port_deallocate(mach_task_self(), cclock); + time.tv_sec = mts.tv_sec; + time.tv_nsec = mts.tv_nsec; +# else + clock_gettime(CLOCK_MONOTONIC, &time); +# endif + return time; +} + +timespec +timespec_from_ms (const uint32_t millis) +{ + timespec time; + time.tv_sec = millis / 1e3; + time.tv_nsec = (millis - (time.tv_sec * 1e3)) * 1e6; + return time; +} + +Serial::SerialImpl::SerialImpl (const string &port, unsigned long baudrate, + bytesize_t bytesize, + parity_t parity, stopbits_t stopbits, + flowcontrol_t flowcontrol) + : port_ (port), fd_ (-1), is_open_ (false), xonxoff_ (false), rtscts_ (false), + baudrate_ (baudrate), parity_ (parity), + bytesize_ (bytesize), stopbits_ (stopbits), flowcontrol_ (flowcontrol) +{ + pthread_mutex_init(&this->read_mutex, NULL); + pthread_mutex_init(&this->write_mutex, NULL); + if (port_.empty () == false) + open (); +} + +Serial::SerialImpl::~SerialImpl () +{ + close(); + pthread_mutex_destroy(&this->read_mutex); + pthread_mutex_destroy(&this->write_mutex); +} + +void +Serial::SerialImpl::open () +{ + if (port_.empty ()) { + throw invalid_argument ("Empty port is invalid."); + } + if (is_open_ == true) { + throw SerialException ("Serial port already open."); + } + + fd_ = ::open (port_.c_str(), O_RDWR | O_NOCTTY | O_NONBLOCK); + + if (fd_ == -1) { + switch (errno) { + case EINTR: + // Recurse because this is a recoverable error. + open (); + return; + case ENFILE: + case EMFILE: + THROW (IOException, "Too many file handles open."); + default: + THROW (IOException, errno); + } + } + + reconfigurePort(); + is_open_ = true; +} + +void +Serial::SerialImpl::reconfigurePort () +{ + if (fd_ == -1) { + // Can only operate on a valid file descriptor + THROW (IOException, "Invalid file descriptor, is the serial port open?"); + } + + struct termios options; // The options for the file descriptor + + if (tcgetattr(fd_, &options) == -1) { + THROW (IOException, "::tcgetattr"); + } + + // set up raw mode / no echo / binary + options.c_cflag |= (tcflag_t) (CLOCAL | CREAD); + options.c_lflag &= (tcflag_t) ~(ICANON | ECHO | ECHOE | ECHOK | ECHONL | + ISIG | IEXTEN); //|ECHOPRT + + options.c_oflag &= (tcflag_t) ~(OPOST); + options.c_iflag &= (tcflag_t) ~(INLCR | IGNCR | ICRNL | IGNBRK); +#ifdef IUCLC + options.c_iflag &= (tcflag_t) ~IUCLC; +#endif +#ifdef PARMRK + options.c_iflag &= (tcflag_t) ~PARMRK; +#endif + + // setup baud rate + bool custom_baud = false; + speed_t baud; + switch (baudrate_) { +#ifdef B0 + case 0: baud = B0; break; +#endif +#ifdef B50 + case 50: baud = B50; break; +#endif +#ifdef B75 + case 75: baud = B75; break; +#endif +#ifdef B110 + case 110: baud = B110; break; +#endif +#ifdef B134 + case 134: baud = B134; break; +#endif +#ifdef B150 + case 150: baud = B150; break; +#endif +#ifdef B200 + case 200: baud = B200; break; +#endif +#ifdef B300 + case 300: baud = B300; break; +#endif +#ifdef B600 + case 600: baud = B600; break; +#endif +#ifdef B1200 + case 1200: baud = B1200; break; +#endif +#ifdef B1800 + case 1800: baud = B1800; break; +#endif +#ifdef B2400 + case 2400: baud = B2400; break; +#endif +#ifdef B4800 + case 4800: baud = B4800; break; +#endif +#ifdef B7200 + case 7200: baud = B7200; break; +#endif +#ifdef B9600 + case 9600: baud = B9600; break; +#endif +#ifdef B14400 + case 14400: baud = B14400; break; +#endif +#ifdef B19200 + case 19200: baud = B19200; break; +#endif +#ifdef B28800 + case 28800: baud = B28800; break; +#endif +#ifdef B57600 + case 57600: baud = B57600; break; +#endif +#ifdef B76800 + case 76800: baud = B76800; break; +#endif +#ifdef B38400 + case 38400: baud = B38400; break; +#endif +#ifdef B115200 + case 115200: baud = B115200; break; +#endif +#ifdef B128000 + case 128000: baud = B128000; break; +#endif +#ifdef B153600 + case 153600: baud = B153600; break; +#endif +#ifdef B230400 + case 230400: baud = B230400; break; +#endif +#ifdef B256000 + case 256000: baud = B256000; break; +#endif +#ifdef B460800 + case 460800: baud = B460800; break; +#endif +#ifdef B576000 + case 576000: baud = B576000; break; +#endif +#ifdef B921600 + case 921600: baud = B921600; break; +#endif +#ifdef B1000000 + case 1000000: baud = B1000000; break; +#endif +#ifdef B1152000 + case 1152000: baud = B1152000; break; +#endif +#ifdef B1500000 + case 1500000: baud = B1500000; break; +#endif +#ifdef B2000000 + case 2000000: baud = B2000000; break; +#endif +#ifdef B2500000 + case 2500000: baud = B2500000; break; +#endif +#ifdef B3000000 + case 3000000: baud = B3000000; break; +#endif +#ifdef B3500000 + case 3500000: baud = B3500000; break; +#endif +#ifdef B4000000 + case 4000000: baud = B4000000; break; +#endif + default: + custom_baud = true; + // OS X support +#if defined(MAC_OS_X_VERSION_10_4) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_4) + // Starting with Tiger, the IOSSIOSPEED ioctl can be used to set arbitrary baud rates + // other than those specified by POSIX. The driver for the underlying serial hardware + // ultimately determines which baud rates can be used. This ioctl sets both the input + // and output speed. + speed_t new_baud = static_cast (baudrate_); + if (-1 == ioctl (fd_, IOSSIOSPEED, &new_baud, 1)) { + THROW (IOException, errno); + } + // Linux Support +#elif defined(__linux__) && defined (TIOCSSERIAL) + struct serial_struct ser; + + if (-1 == ioctl (fd_, TIOCGSERIAL, &ser)) { + THROW (IOException, errno); + } + + // set custom divisor + ser.custom_divisor = ser.baud_base / static_cast (baudrate_); + // update flags + ser.flags &= ~ASYNC_SPD_MASK; + ser.flags |= ASYNC_SPD_CUST; + + if (-1 == ioctl (fd_, TIOCSSERIAL, &ser)) { + THROW (IOException, errno); + } +#else + throw invalid_argument ("OS does not currently support custom bauds"); +#endif + } + if (custom_baud == false) { +#ifdef _BSD_SOURCE + ::cfsetspeed(&options, baud); +#else + ::cfsetispeed(&options, baud); + ::cfsetospeed(&options, baud); +#endif + } + + // setup char len + options.c_cflag &= (tcflag_t) ~CSIZE; + if (bytesize_ == eightbits) + options.c_cflag |= CS8; + else if (bytesize_ == sevenbits) + options.c_cflag |= CS7; + else if (bytesize_ == sixbits) + options.c_cflag |= CS6; + else if (bytesize_ == fivebits) + options.c_cflag |= CS5; + else + throw invalid_argument ("invalid char len"); + // setup stopbits + if (stopbits_ == stopbits_one) + options.c_cflag &= (tcflag_t) ~(CSTOPB); + else if (stopbits_ == stopbits_one_point_five) + // ONE POINT FIVE same as TWO.. there is no POSIX support for 1.5 + options.c_cflag |= (CSTOPB); + else if (stopbits_ == stopbits_two) + options.c_cflag |= (CSTOPB); + else + throw invalid_argument ("invalid stop bit"); + // setup parity + options.c_iflag &= (tcflag_t) ~(INPCK | ISTRIP); + if (parity_ == parity_none) { + options.c_cflag &= (tcflag_t) ~(PARENB | PARODD); + } else if (parity_ == parity_even) { + options.c_cflag &= (tcflag_t) ~(PARODD); + options.c_cflag |= (PARENB); + } else if (parity_ == parity_odd) { + options.c_cflag |= (PARENB | PARODD); + } +#ifdef CMSPAR + else if (parity_ == parity_mark) { + options.c_cflag |= (PARENB | CMSPAR | PARODD); + } + else if (parity_ == parity_space) { + options.c_cflag |= (PARENB | CMSPAR); + options.c_cflag &= (tcflag_t) ~(PARODD); + } +#else + // CMSPAR is not defined on OSX. So do not support mark or space parity. + else if (parity_ == parity_mark || parity_ == parity_space) { + throw invalid_argument ("OS does not support mark or space parity"); + } +#endif // ifdef CMSPAR + else { + throw invalid_argument ("invalid parity"); + } + // setup flow control + if (flowcontrol_ == flowcontrol_none) { + xonxoff_ = false; + rtscts_ = false; + } + if (flowcontrol_ == flowcontrol_software) { + xonxoff_ = true; + rtscts_ = false; + } + if (flowcontrol_ == flowcontrol_hardware) { + xonxoff_ = false; + rtscts_ = true; + } + // xonxoff +#ifdef IXANY + if (xonxoff_) + options.c_iflag |= (IXON | IXOFF); //|IXANY) + else + options.c_iflag &= (tcflag_t) ~(IXON | IXOFF | IXANY); +#else + if (xonxoff_) + options.c_iflag |= (IXON | IXOFF); + else + options.c_iflag &= (tcflag_t) ~(IXON | IXOFF); +#endif + // rtscts +#ifdef CRTSCTS + if (rtscts_) + options.c_cflag |= (CRTSCTS); + else + options.c_cflag &= (unsigned long) ~(CRTSCTS); +#elif defined CNEW_RTSCTS + if (rtscts_) + options.c_cflag |= (CNEW_RTSCTS); + else + options.c_cflag &= (unsigned long) ~(CNEW_RTSCTS); +#else +#error "OS Support seems wrong." +#endif + + // http://www.unixwiz.net/techtips/termios-vmin-vtime.html + // this basically sets the read call up to be a polling read, + // but we are using select to ensure there is data available + // to read before each call, so we should never needlessly poll + options.c_cc[VMIN] = 0; + options.c_cc[VTIME] = 0; + + // activate settings + ::tcsetattr (fd_, TCSANOW, &options); + + // Update byte_time_ based on the new settings. + uint32_t bit_time_ns = 1e9 / baudrate_; + byte_time_ns_ = bit_time_ns * (1 + bytesize_ + parity_ + stopbits_); + + // Compensate for the stopbits_one_point_five enum being equal to int 3, + // and not 1.5. + if (stopbits_ == stopbits_one_point_five) { + byte_time_ns_ += ((1.5 - stopbits_one_point_five) * bit_time_ns); + } +} + +void +Serial::SerialImpl::close () +{ + if (is_open_ == true) { + if (fd_ != -1) { + int ret; + ret = ::close (fd_); + if (ret == 0) { + fd_ = -1; + } else { + THROW (IOException, errno); + } + } + is_open_ = false; + } +} + +bool +Serial::SerialImpl::isOpen () const +{ + return is_open_; +} + +size_t +Serial::SerialImpl::available () +{ + if (!is_open_) { + return 0; + } + int count = 0; + if (-1 == ioctl (fd_, TIOCINQ, &count)) { + THROW (IOException, errno); + } else { + return static_cast (count); + } +} + +bool +Serial::SerialImpl::waitReadable (uint32_t timeout) +{ + // Setup a select call to block for serial data or a timeout + fd_set readfds; + FD_ZERO (&readfds); + FD_SET (fd_, &readfds); + timespec timeout_ts (timespec_from_ms (timeout)); + int r = pselect (fd_ + 1, &readfds, NULL, NULL, &timeout_ts, NULL); + + if (r < 0) { + // Select was interrupted + if (errno == EINTR) { + return false; + } + // Otherwise there was some error + THROW (IOException, errno); + } + // Timeout occurred + if (r == 0) { + return false; + } + // This shouldn't happen, if r > 0 our fd has to be in the list! + if (!FD_ISSET (fd_, &readfds)) { + THROW (IOException, "select reports ready to read, but our fd isn't" + " in the list, this shouldn't happen!"); + } + // Data available to read. + return true; +} + +void +Serial::SerialImpl::waitByteTimes (size_t count) +{ + timespec wait_time = { 0, static_cast(byte_time_ns_ * count)}; + pselect (0, NULL, NULL, NULL, &wait_time, NULL); +} + +size_t +Serial::SerialImpl::read (uint8_t *buf, size_t size) +{ + // If the port is not open, throw + if (!is_open_) { + throw PortNotOpenedException ("Serial::read"); + } + size_t bytes_read = 0; + + // Calculate total timeout in milliseconds t_c + (t_m * N) + long total_timeout_ms = timeout_.read_timeout_constant; + total_timeout_ms += timeout_.read_timeout_multiplier * static_cast (size); + MillisecondTimer total_timeout(total_timeout_ms); + + // Pre-fill buffer with available bytes + { + ssize_t bytes_read_now = ::read (fd_, buf, size); + if (bytes_read_now > 0) { + bytes_read = bytes_read_now; + } + } + + while (bytes_read < size) { + int64_t timeout_remaining_ms = total_timeout.remaining(); + if (timeout_remaining_ms <= 0) { + // Timed out + break; + } + // Timeout for the next select is whichever is less of the remaining + // total read timeout and the inter-byte timeout. + uint32_t timeout = std::min(static_cast (timeout_remaining_ms), + timeout_.inter_byte_timeout); + // Wait for the device to be readable, and then attempt to read. + if (waitReadable(timeout)) { + // If it's a fixed-length multi-byte read, insert a wait here so that + // we can attempt to grab the whole thing in a single IO call. Skip + // this wait if a non-max inter_byte_timeout is specified. + if (size > 1 && timeout_.inter_byte_timeout == Timeout::max()) { + size_t bytes_available = available(); + if (bytes_available + bytes_read < size) { + waitByteTimes(size - (bytes_available + bytes_read)); + } + } + // This should be non-blocking returning only what is available now + // Then returning so that select can block again. + ssize_t bytes_read_now = + ::read (fd_, buf + bytes_read, size - bytes_read); + // read should always return some data as select reported it was + // ready to read when we get to this point. + if (bytes_read_now < 1) { + // Disconnected devices, at least on Linux, show the + // behavior that they are always ready to read immediately + // but reading returns nothing. + throw SerialException ("device reports readiness to read but " + "returned no data (device disconnected?)"); + } + // Update bytes_read + bytes_read += static_cast (bytes_read_now); + // If bytes_read == size then we have read everything we need + if (bytes_read == size) { + break; + } + // If bytes_read < size then we have more to read + if (bytes_read < size) { + continue; + } + // If bytes_read > size then we have over read, which shouldn't happen + if (bytes_read > size) { + throw SerialException ("read over read, too many bytes where " + "read, this shouldn't happen, might be " + "a logical error!"); + } + } + } + return bytes_read; +} + +size_t +Serial::SerialImpl::write (const uint8_t *data, size_t length) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::write"); + } + fd_set writefds; + size_t bytes_written = 0; + + // Calculate total timeout in milliseconds t_c + (t_m * N) + long total_timeout_ms = timeout_.write_timeout_constant; + total_timeout_ms += timeout_.write_timeout_multiplier * static_cast (length); + MillisecondTimer total_timeout(total_timeout_ms); + + while (bytes_written < length) { + int64_t timeout_remaining_ms = total_timeout.remaining(); + if (timeout_remaining_ms <= 0) { + // Timed out + break; + } + timespec timeout(timespec_from_ms(timeout_remaining_ms)); + + FD_ZERO (&writefds); + FD_SET (fd_, &writefds); + + // Do the select + int r = pselect (fd_ + 1, NULL, &writefds, NULL, &timeout, NULL); + + // Figure out what happened by looking at select's response 'r' + /** Error **/ + if (r < 0) { + // Select was interrupted, try again + if (errno == EINTR) { + continue; + } + // Otherwise there was some error + THROW (IOException, errno); + } + /** Timeout **/ + if (r == 0) { + break; + } + /** Port ready to write **/ + if (r > 0) { + // Make sure our file descriptor is in the ready to write list + if (FD_ISSET (fd_, &writefds)) { + // This will write some + ssize_t bytes_written_now = + ::write (fd_, data + bytes_written, length - bytes_written); + // write should always return some data as select reported it was + // ready to write when we get to this point. + if (bytes_written_now < 1) { + // Disconnected devices, at least on Linux, show the + // behavior that they are always ready to write immediately + // but writing returns nothing. + throw SerialException ("device reports readiness to write but " + "returned no data (device disconnected?)"); + } + // Update bytes_written + bytes_written += static_cast (bytes_written_now); + // If bytes_written == size then we have written everything we need to + if (bytes_written == length) { + break; + } + // If bytes_written < size then we have more to write + if (bytes_written < length) { + continue; + } + // If bytes_written > size then we have over written, which shouldn't happen + if (bytes_written > length) { + throw SerialException ("write over wrote, too many bytes where " + "written, this shouldn't happen, might be " + "a logical error!"); + } + } + // This shouldn't happen, if r > 0 our fd has to be in the list! + THROW (IOException, "select reports ready to write, but our fd isn't" + " in the list, this shouldn't happen!"); + } + } + return bytes_written; +} + +void +Serial::SerialImpl::setPort (const string &port) +{ + port_ = port; +} + +string +Serial::SerialImpl::getPort () const +{ + return port_; +} + +void +Serial::SerialImpl::setTimeout (serial::Timeout &timeout) +{ + timeout_ = timeout; +} + +serial::Timeout +Serial::SerialImpl::getTimeout () const +{ + return timeout_; +} + +void +Serial::SerialImpl::setBaudrate (unsigned long baudrate) +{ + baudrate_ = baudrate; + if (is_open_) + reconfigurePort (); +} + +unsigned long +Serial::SerialImpl::getBaudrate () const +{ + return baudrate_; +} + +void +Serial::SerialImpl::setBytesize (serial::bytesize_t bytesize) +{ + bytesize_ = bytesize; + if (is_open_) + reconfigurePort (); +} + +serial::bytesize_t +Serial::SerialImpl::getBytesize () const +{ + return bytesize_; +} + +void +Serial::SerialImpl::setParity (serial::parity_t parity) +{ + parity_ = parity; + if (is_open_) + reconfigurePort (); +} + +serial::parity_t +Serial::SerialImpl::getParity () const +{ + return parity_; +} + +void +Serial::SerialImpl::setStopbits (serial::stopbits_t stopbits) +{ + stopbits_ = stopbits; + if (is_open_) + reconfigurePort (); +} + +serial::stopbits_t +Serial::SerialImpl::getStopbits () const +{ + return stopbits_; +} + +void +Serial::SerialImpl::setFlowcontrol (serial::flowcontrol_t flowcontrol) +{ + flowcontrol_ = flowcontrol; + if (is_open_) + reconfigurePort (); +} + +serial::flowcontrol_t +Serial::SerialImpl::getFlowcontrol () const +{ + return flowcontrol_; +} + +void +Serial::SerialImpl::flush () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::flush"); + } + tcdrain (fd_); +} + +void +Serial::SerialImpl::flushInput () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::flushInput"); + } + tcflush (fd_, TCIFLUSH); +} + +void +Serial::SerialImpl::flushOutput () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::flushOutput"); + } + tcflush (fd_, TCOFLUSH); +} + +void +Serial::SerialImpl::sendBreak (int duration) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::sendBreak"); + } + tcsendbreak (fd_, static_cast (duration / 4)); +} + +void +Serial::SerialImpl::setBreak (bool level) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::setBreak"); + } + + if (level) { + if (-1 == ioctl (fd_, TIOCSBRK)) + { + stringstream ss; + ss << "setBreak failed on a call to ioctl(TIOCSBRK): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + } else { + if (-1 == ioctl (fd_, TIOCCBRK)) + { + stringstream ss; + ss << "setBreak failed on a call to ioctl(TIOCCBRK): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + } +} + +void +Serial::SerialImpl::setRTS (bool level) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::setRTS"); + } + + int command = TIOCM_RTS; + + if (level) { + if (-1 == ioctl (fd_, TIOCMBIS, &command)) + { + stringstream ss; + ss << "setRTS failed on a call to ioctl(TIOCMBIS): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + } else { + if (-1 == ioctl (fd_, TIOCMBIC, &command)) + { + stringstream ss; + ss << "setRTS failed on a call to ioctl(TIOCMBIC): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + } +} + +void +Serial::SerialImpl::setDTR (bool level) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::setDTR"); + } + + int command = TIOCM_DTR; + + if (level) { + if (-1 == ioctl (fd_, TIOCMBIS, &command)) + { + stringstream ss; + ss << "setDTR failed on a call to ioctl(TIOCMBIS): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + } else { + if (-1 == ioctl (fd_, TIOCMBIC, &command)) + { + stringstream ss; + ss << "setDTR failed on a call to ioctl(TIOCMBIC): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + } +} + +bool +Serial::SerialImpl::waitForChange () +{ +#ifndef TIOCMIWAIT + +while (is_open_ == true) { + + int status; + + if (-1 == ioctl (fd_, TIOCMGET, &status)) + { + stringstream ss; + ss << "waitForChange failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + else + { + if (0 != (status & TIOCM_CTS) + || 0 != (status & TIOCM_DSR) + || 0 != (status & TIOCM_RI) + || 0 != (status & TIOCM_CD)) + { + return true; + } + } + + usleep(1000); + } + + return false; +#else + int command = (TIOCM_CD|TIOCM_DSR|TIOCM_RI|TIOCM_CTS); + + if (-1 == ioctl (fd_, TIOCMIWAIT, &command)) { + stringstream ss; + ss << "waitForDSR failed on a call to ioctl(TIOCMIWAIT): " + << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + return true; +#endif +} + +bool +Serial::SerialImpl::getCTS () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getCTS"); + } + + int status; + + if (-1 == ioctl (fd_, TIOCMGET, &status)) + { + stringstream ss; + ss << "getCTS failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + else + { + return 0 != (status & TIOCM_CTS); + } +} + +bool +Serial::SerialImpl::getDSR () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getDSR"); + } + + int status; + + if (-1 == ioctl (fd_, TIOCMGET, &status)) + { + stringstream ss; + ss << "getDSR failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + else + { + return 0 != (status & TIOCM_DSR); + } +} + +bool +Serial::SerialImpl::getRI () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getRI"); + } + + int status; + + if (-1 == ioctl (fd_, TIOCMGET, &status)) + { + stringstream ss; + ss << "getRI failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + else + { + return 0 != (status & TIOCM_RI); + } +} + +bool +Serial::SerialImpl::getCD () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getCD"); + } + + int status; + + if (-1 == ioctl (fd_, TIOCMGET, &status)) + { + stringstream ss; + ss << "getCD failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno); + throw(SerialException(ss.str().c_str())); + } + else + { + return 0 != (status & TIOCM_CD); + } +} + +void +Serial::SerialImpl::readLock () +{ + int result = pthread_mutex_lock(&this->read_mutex); + if (result) { + THROW (IOException, result); + } +} + +void +Serial::SerialImpl::readUnlock () +{ + int result = pthread_mutex_unlock(&this->read_mutex); + if (result) { + THROW (IOException, result); + } +} + +void +Serial::SerialImpl::writeLock () +{ + int result = pthread_mutex_lock(&this->write_mutex); + if (result) { + THROW (IOException, result); + } +} + +void +Serial::SerialImpl::writeUnlock () +{ + int result = pthread_mutex_unlock(&this->write_mutex); + if (result) { + THROW (IOException, result); + } +} + +#endif // !defined(_WIN32) diff --git a/lib/serial/src/impl/win.cc b/lib/serial/src/impl/win.cc new file mode 100644 index 0000000..10eac9a --- /dev/null +++ b/lib/serial/src/impl/win.cc @@ -0,0 +1,640 @@ +#if defined(_WIN32) + +/* Copyright 2012 William Woodall and John Harrison */ + +#include + +#include "include/impl/win.h" + +using std::string; +using std::wstring; +using std::stringstream; +using std::invalid_argument; +using serial::Serial; +using serial::Timeout; +using serial::bytesize_t; +using serial::parity_t; +using serial::stopbits_t; +using serial::flowcontrol_t; +using serial::SerialException; +using serial::PortNotOpenedException; +using serial::IOException; + +inline wstring +_prefix_port_if_needed(const wstring &input) +{ + static wstring windows_com_port_prefix = L"\\\\.\\"; + if (input.compare(windows_com_port_prefix) != 0) + { + return windows_com_port_prefix + input; + } + return input; +} + +Serial::SerialImpl::SerialImpl (const string &port, unsigned long baudrate, + bytesize_t bytesize, + parity_t parity, stopbits_t stopbits, + flowcontrol_t flowcontrol) + : port_ (port.begin(), port.end()), fd_ (INVALID_HANDLE_VALUE), is_open_ (false), + baudrate_ (baudrate), parity_ (parity), + bytesize_ (bytesize), stopbits_ (stopbits), flowcontrol_ (flowcontrol) +{ + read_mutex = CreateMutex(NULL, false, NULL); + write_mutex = CreateMutex(NULL, false, NULL); + if (port_.empty () == false) + open (); +} + +Serial::SerialImpl::~SerialImpl () +{ + this->close(); + CloseHandle(read_mutex); + CloseHandle(write_mutex); +} + +void +Serial::SerialImpl::open () +{ + if (port_.empty ()) { + throw invalid_argument ("Empty port is invalid."); + } + if (is_open_ == true) { + throw SerialException ("Serial port already open."); + } + + // See: https://github.com/wjwwood/serial/issues/84 + wstring port_with_prefix = _prefix_port_if_needed(port_); + LPCWSTR lp_port = port_with_prefix.c_str(); + fd_ = CreateFileW(lp_port, + GENERIC_READ | GENERIC_WRITE, + 0, + 0, + OPEN_EXISTING, + FILE_ATTRIBUTE_NORMAL, + 0); + + if (fd_ == INVALID_HANDLE_VALUE) { + DWORD errno_ = GetLastError(); + stringstream ss; + switch (errno_) { + case ERROR_FILE_NOT_FOUND: + // Use this->getPort to convert to a std::string + ss << "Specified port, " << this->getPort() << ", does not exist."; + THROW (IOException, ss.str().c_str()); + default: + ss << "Unknown error opening the serial port: " << errno; + THROW (IOException, ss.str().c_str()); + } + } + + reconfigurePort(); + is_open_ = true; +} + +void +Serial::SerialImpl::reconfigurePort () +{ + if (fd_ == INVALID_HANDLE_VALUE) { + // Can only operate on a valid file descriptor + THROW (IOException, "Invalid file descriptor, is the serial port open?"); + } + + DCB dcbSerialParams = {0}; + + dcbSerialParams.DCBlength=sizeof(dcbSerialParams); + + if (!GetCommState(fd_, &dcbSerialParams)) { + //error getting state + THROW (IOException, "Error getting the serial port state."); + } + + // setup baud rate + switch (baudrate_) { +#ifdef CBR_0 + case 0: dcbSerialParams.BaudRate = CBR_0; break; +#endif +#ifdef CBR_50 + case 50: dcbSerialParams.BaudRate = CBR_50; break; +#endif +#ifdef CBR_75 + case 75: dcbSerialParams.BaudRate = CBR_75; break; +#endif +#ifdef CBR_110 + case 110: dcbSerialParams.BaudRate = CBR_110; break; +#endif +#ifdef CBR_134 + case 134: dcbSerialParams.BaudRate = CBR_134; break; +#endif +#ifdef CBR_150 + case 150: dcbSerialParams.BaudRate = CBR_150; break; +#endif +#ifdef CBR_200 + case 200: dcbSerialParams.BaudRate = CBR_200; break; +#endif +#ifdef CBR_300 + case 300: dcbSerialParams.BaudRate = CBR_300; break; +#endif +#ifdef CBR_600 + case 600: dcbSerialParams.BaudRate = CBR_600; break; +#endif +#ifdef CBR_1200 + case 1200: dcbSerialParams.BaudRate = CBR_1200; break; +#endif +#ifdef CBR_1800 + case 1800: dcbSerialParams.BaudRate = CBR_1800; break; +#endif +#ifdef CBR_2400 + case 2400: dcbSerialParams.BaudRate = CBR_2400; break; +#endif +#ifdef CBR_4800 + case 4800: dcbSerialParams.BaudRate = CBR_4800; break; +#endif +#ifdef CBR_7200 + case 7200: dcbSerialParams.BaudRate = CBR_7200; break; +#endif +#ifdef CBR_9600 + case 9600: dcbSerialParams.BaudRate = CBR_9600; break; +#endif +#ifdef CBR_14400 + case 14400: dcbSerialParams.BaudRate = CBR_14400; break; +#endif +#ifdef CBR_19200 + case 19200: dcbSerialParams.BaudRate = CBR_19200; break; +#endif +#ifdef CBR_28800 + case 28800: dcbSerialParams.BaudRate = CBR_28800; break; +#endif +#ifdef CBR_57600 + case 57600: dcbSerialParams.BaudRate = CBR_57600; break; +#endif +#ifdef CBR_76800 + case 76800: dcbSerialParams.BaudRate = CBR_76800; break; +#endif +#ifdef CBR_38400 + case 38400: dcbSerialParams.BaudRate = CBR_38400; break; +#endif +#ifdef CBR_115200 + case 115200: dcbSerialParams.BaudRate = CBR_115200; break; +#endif +#ifdef CBR_128000 + case 128000: dcbSerialParams.BaudRate = CBR_128000; break; +#endif +#ifdef CBR_153600 + case 153600: dcbSerialParams.BaudRate = CBR_153600; break; +#endif +#ifdef CBR_230400 + case 230400: dcbSerialParams.BaudRate = CBR_230400; break; +#endif +#ifdef CBR_256000 + case 256000: dcbSerialParams.BaudRate = CBR_256000; break; +#endif +#ifdef CBR_460800 + case 460800: dcbSerialParams.BaudRate = CBR_460800; break; +#endif +#ifdef CBR_921600 + case 921600: dcbSerialParams.BaudRate = CBR_921600; break; +#endif + default: + // Try to blindly assign it + dcbSerialParams.BaudRate = baudrate_; + } + + // setup char len + if (bytesize_ == eightbits) + dcbSerialParams.ByteSize = 8; + else if (bytesize_ == sevenbits) + dcbSerialParams.ByteSize = 7; + else if (bytesize_ == sixbits) + dcbSerialParams.ByteSize = 6; + else if (bytesize_ == fivebits) + dcbSerialParams.ByteSize = 5; + else + throw invalid_argument ("invalid char len"); + + // setup stopbits + if (stopbits_ == stopbits_one) + dcbSerialParams.StopBits = ONESTOPBIT; + else if (stopbits_ == stopbits_one_point_five) + dcbSerialParams.StopBits = ONE5STOPBITS; + else if (stopbits_ == stopbits_two) + dcbSerialParams.StopBits = TWOSTOPBITS; + else + throw invalid_argument ("invalid stop bit"); + + // setup parity + if (parity_ == parity_none) { + dcbSerialParams.Parity = NOPARITY; + } else if (parity_ == parity_even) { + dcbSerialParams.Parity = EVENPARITY; + } else if (parity_ == parity_odd) { + dcbSerialParams.Parity = ODDPARITY; + } else if (parity_ == parity_mark) { + dcbSerialParams.Parity = MARKPARITY; + } else if (parity_ == parity_space) { + dcbSerialParams.Parity = SPACEPARITY; + } else { + throw invalid_argument ("invalid parity"); + } + + // setup flowcontrol + if (flowcontrol_ == flowcontrol_none) { + dcbSerialParams.fOutxCtsFlow = false; + dcbSerialParams.fRtsControl = 0x00; + dcbSerialParams.fOutX = false; + dcbSerialParams.fInX = false; + } + if (flowcontrol_ == flowcontrol_software) { + dcbSerialParams.fOutxCtsFlow = false; + dcbSerialParams.fRtsControl = 0x00; + dcbSerialParams.fOutX = true; + dcbSerialParams.fInX = true; + } + if (flowcontrol_ == flowcontrol_hardware) { + dcbSerialParams.fOutxCtsFlow = true; + dcbSerialParams.fRtsControl = 0x03; + dcbSerialParams.fOutX = false; + dcbSerialParams.fInX = false; + } + + // activate settings + if (!SetCommState(fd_, &dcbSerialParams)){ + CloseHandle(fd_); + THROW (IOException, "Error setting serial port settings."); + } + + // Setup timeouts + COMMTIMEOUTS timeouts = {0}; + timeouts.ReadIntervalTimeout = timeout_.inter_byte_timeout; + timeouts.ReadTotalTimeoutConstant = timeout_.read_timeout_constant; + timeouts.ReadTotalTimeoutMultiplier = timeout_.read_timeout_multiplier; + timeouts.WriteTotalTimeoutConstant = timeout_.write_timeout_constant; + timeouts.WriteTotalTimeoutMultiplier = timeout_.write_timeout_multiplier; + if (!SetCommTimeouts(fd_, &timeouts)) { + THROW (IOException, "Error setting timeouts."); + } +} + +void +Serial::SerialImpl::close () +{ + if (is_open_ == true) { + if (fd_ != INVALID_HANDLE_VALUE) { + int ret; + ret = CloseHandle(fd_); + if (ret == 0) { + stringstream ss; + ss << "Error while closing serial port: " << GetLastError(); + THROW (IOException, ss.str().c_str()); + } else { + fd_ = INVALID_HANDLE_VALUE; + } + } + is_open_ = false; + } +} + +bool +Serial::SerialImpl::isOpen () const +{ + return is_open_; +} + +size_t +Serial::SerialImpl::available () +{ + if (!is_open_) { + return 0; + } + COMSTAT cs; + if (!ClearCommError(fd_, NULL, &cs)) { + stringstream ss; + ss << "Error while checking status of the serial port: " << GetLastError(); + THROW (IOException, ss.str().c_str()); + } + return static_cast(cs.cbInQue); +} + +bool +Serial::SerialImpl::waitReadable (uint32_t /*timeout*/) +{ + THROW (IOException, "waitReadable is not implemented on Windows."); + return false; +} + +void +Serial::SerialImpl::waitByteTimes (size_t /*count*/) +{ + THROW (IOException, "waitByteTimes is not implemented on Windows."); +} + +size_t +Serial::SerialImpl::read (uint8_t *buf, size_t size) +{ + if (!is_open_) { + throw PortNotOpenedException ("Serial::read"); + } + DWORD bytes_read; + if (!ReadFile(fd_, buf, static_cast(size), &bytes_read, NULL)) { + stringstream ss; + ss << "Error while reading from the serial port: " << GetLastError(); + THROW (IOException, ss.str().c_str()); + } + return (size_t) (bytes_read); +} + +size_t +Serial::SerialImpl::write (const uint8_t *data, size_t length) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::write"); + } + DWORD bytes_written; + if (!WriteFile(fd_, data, static_cast(length), &bytes_written, NULL)) { + stringstream ss; + ss << "Error while writing to the serial port: " << GetLastError(); + THROW (IOException, ss.str().c_str()); + } + return (size_t) (bytes_written); +} + +void +Serial::SerialImpl::setPort (const string &port) +{ + port_ = wstring(port.begin(), port.end()); +} + +string +Serial::SerialImpl::getPort () const +{ + return string(port_.begin(), port_.end()); +} + +void +Serial::SerialImpl::setTimeout (serial::Timeout &timeout) +{ + timeout_ = timeout; + if (is_open_) { + reconfigurePort (); + } +} + +serial::Timeout +Serial::SerialImpl::getTimeout () const +{ + return timeout_; +} + +void +Serial::SerialImpl::setBaudrate (unsigned long baudrate) +{ + baudrate_ = baudrate; + if (is_open_) { + reconfigurePort (); + } +} + +unsigned long +Serial::SerialImpl::getBaudrate () const +{ + return baudrate_; +} + +void +Serial::SerialImpl::setBytesize (serial::bytesize_t bytesize) +{ + bytesize_ = bytesize; + if (is_open_) { + reconfigurePort (); + } +} + +serial::bytesize_t +Serial::SerialImpl::getBytesize () const +{ + return bytesize_; +} + +void +Serial::SerialImpl::setParity (serial::parity_t parity) +{ + parity_ = parity; + if (is_open_) { + reconfigurePort (); + } +} + +serial::parity_t +Serial::SerialImpl::getParity () const +{ + return parity_; +} + +void +Serial::SerialImpl::setStopbits (serial::stopbits_t stopbits) +{ + stopbits_ = stopbits; + if (is_open_) { + reconfigurePort (); + } +} + +serial::stopbits_t +Serial::SerialImpl::getStopbits () const +{ + return stopbits_; +} + +void +Serial::SerialImpl::setFlowcontrol (serial::flowcontrol_t flowcontrol) +{ + flowcontrol_ = flowcontrol; + if (is_open_) { + reconfigurePort (); + } +} + +serial::flowcontrol_t +Serial::SerialImpl::getFlowcontrol () const +{ + return flowcontrol_; +} + +void +Serial::SerialImpl::flush () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::flush"); + } + FlushFileBuffers (fd_); +} + +void +Serial::SerialImpl::flushInput () +{ + THROW (IOException, "flushInput is not supported on Windows."); +} + +void +Serial::SerialImpl::flushOutput () +{ + THROW (IOException, "flushOutput is not supported on Windows."); +} + +void +Serial::SerialImpl::sendBreak (int /*duration*/) +{ + THROW (IOException, "sendBreak is not supported on Windows."); +} + +void +Serial::SerialImpl::setBreak (bool level) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::setBreak"); + } + if (level) { + EscapeCommFunction (fd_, SETBREAK); + } else { + EscapeCommFunction (fd_, CLRBREAK); + } +} + +void +Serial::SerialImpl::setRTS (bool level) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::setRTS"); + } + if (level) { + EscapeCommFunction (fd_, SETRTS); + } else { + EscapeCommFunction (fd_, CLRRTS); + } +} + +void +Serial::SerialImpl::setDTR (bool level) +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::setDTR"); + } + if (level) { + EscapeCommFunction (fd_, SETDTR); + } else { + EscapeCommFunction (fd_, CLRDTR); + } +} + +bool +Serial::SerialImpl::waitForChange () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::waitForChange"); + } + DWORD dwCommEvent; + + if (!SetCommMask(fd_, EV_CTS | EV_DSR | EV_RING | EV_RLSD)) { + // Error setting communications mask + return false; + } + + if (!WaitCommEvent(fd_, &dwCommEvent, NULL)) { + // An error occurred waiting for the event. + return false; + } else { + // Event has occurred. + return true; + } +} + +bool +Serial::SerialImpl::getCTS () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getCTS"); + } + DWORD dwModemStatus; + if (!GetCommModemStatus(fd_, &dwModemStatus)) { + THROW (IOException, "Error getting the status of the CTS line."); + } + + return (MS_CTS_ON & dwModemStatus) != 0; +} + +bool +Serial::SerialImpl::getDSR () +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getDSR"); + } + DWORD dwModemStatus; + if (!GetCommModemStatus(fd_, &dwModemStatus)) { + THROW (IOException, "Error getting the status of the DSR line."); + } + + return (MS_DSR_ON & dwModemStatus) != 0; +} + +bool +Serial::SerialImpl::getRI() +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getRI"); + } + DWORD dwModemStatus; + if (!GetCommModemStatus(fd_, &dwModemStatus)) { + THROW (IOException, "Error getting the status of the RI line."); + } + + return (MS_RING_ON & dwModemStatus) != 0; +} + +bool +Serial::SerialImpl::getCD() +{ + if (is_open_ == false) { + throw PortNotOpenedException ("Serial::getCD"); + } + DWORD dwModemStatus; + if (!GetCommModemStatus(fd_, &dwModemStatus)) { + // Error in GetCommModemStatus; + THROW (IOException, "Error getting the status of the CD line."); + } + + return (MS_RLSD_ON & dwModemStatus) != 0; +} + +void +Serial::SerialImpl::readLock() +{ + if (WaitForSingleObject(read_mutex, INFINITE) != WAIT_OBJECT_0) { + THROW (IOException, "Error claiming read mutex."); + } +} + +void +Serial::SerialImpl::readUnlock() +{ + if (!ReleaseMutex(read_mutex)) { + THROW (IOException, "Error releasing read mutex."); + } +} + +void +Serial::SerialImpl::writeLock() +{ + if (WaitForSingleObject(write_mutex, INFINITE) != WAIT_OBJECT_0) { + THROW (IOException, "Error claiming write mutex."); + } +} + +void +Serial::SerialImpl::writeUnlock() +{ + if (!ReleaseMutex(write_mutex)) { + THROW (IOException, "Error releasing write mutex."); + } +} + +#endif // #if defined(_WIN32) + diff --git a/lib/serial/src/serial.cc b/lib/serial/src/serial.cc new file mode 100644 index 0000000..e5a1f1f --- /dev/null +++ b/lib/serial/src/serial.cc @@ -0,0 +1,415 @@ +/* Copyright 2012 William Woodall and John Harrison */ +#include + +#if !defined(_WIN32) && !defined(__OpenBSD__) && !defined(__FreeBSD__) +# include +#endif + +#if defined (__MINGW32__) +# define alloca __builtin_alloca +#endif + + +#ifdef _WIN32 +#include "include/serial.h" +#include "include/impl/win.h" +#else +#include "../include/serial.h" +#include "../include/impl/unix.h" +#endif + +using std::invalid_argument; +using std::min; +using std::numeric_limits; +using std::vector; +using std::size_t; +using std::string; + +using serial::Serial; +using serial::SerialException; +using serial::IOException; +using serial::bytesize_t; +using serial::parity_t; +using serial::stopbits_t; +using serial::flowcontrol_t; + +class Serial::ScopedReadLock { +public: + ScopedReadLock(SerialImpl *pimpl) : pimpl_(pimpl) { + this->pimpl_->readLock(); + } + ~ScopedReadLock() { + this->pimpl_->readUnlock(); + } +private: + // Disable copy constructors + ScopedReadLock(const ScopedReadLock&); + const ScopedReadLock& operator=(ScopedReadLock); + + SerialImpl *pimpl_; +}; + +class Serial::ScopedWriteLock { +public: + ScopedWriteLock(SerialImpl *pimpl) : pimpl_(pimpl) { + this->pimpl_->writeLock(); + } + ~ScopedWriteLock() { + this->pimpl_->writeUnlock(); + } +private: + // Disable copy constructors + ScopedWriteLock(const ScopedWriteLock&); + const ScopedWriteLock& operator=(ScopedWriteLock); + SerialImpl *pimpl_; +}; + +Serial::Serial (const string &port, uint32_t baudrate, serial::Timeout timeout, + bytesize_t bytesize, parity_t parity, stopbits_t stopbits, + flowcontrol_t flowcontrol) + : pimpl_(new SerialImpl (port, baudrate, bytesize, parity, + stopbits, flowcontrol)) +{ + pimpl_->setTimeout(timeout); +} + +Serial::~Serial () +{ + delete pimpl_; +} + +void +Serial::open () +{ + pimpl_->open (); +} + +void +Serial::close () +{ + pimpl_->close (); +} + +bool +Serial::isOpen () const +{ + return pimpl_->isOpen (); +} + +size_t +Serial::available () +{ + return pimpl_->available (); +} + +bool +Serial::waitReadable () +{ + serial::Timeout timeout(pimpl_->getTimeout ()); + return pimpl_->waitReadable(timeout.read_timeout_constant); +} + +void +Serial::waitByteTimes (size_t count) +{ + pimpl_->waitByteTimes(count); +} + +size_t +Serial::read_ (uint8_t *buffer, size_t size) +{ + return this->pimpl_->read (buffer, size); +} + +size_t +Serial::read (uint8_t *buffer, size_t size) +{ + ScopedReadLock lock(this->pimpl_); + return this->pimpl_->read (buffer, size); +} + +size_t +Serial::read (std::vector &buffer, size_t size) +{ + ScopedReadLock lock(this->pimpl_); + uint8_t *buffer_ = new uint8_t[size]; + size_t bytes_read = this->pimpl_->read (buffer_, size); + buffer.insert (buffer.end (), buffer_, buffer_+bytes_read); + delete[] buffer_; + return bytes_read; +} + +size_t +Serial::read (std::string &buffer, size_t size) +{ + ScopedReadLock lock(this->pimpl_); + uint8_t *buffer_ = new uint8_t[size]; + size_t bytes_read = this->pimpl_->read (buffer_, size); + buffer.append (reinterpret_cast(buffer_), bytes_read); + delete[] buffer_; + return bytes_read; +} + +string +Serial::read (size_t size) +{ + std::string buffer; + this->read (buffer, size); + return buffer; +} + +size_t +Serial::readline (string &buffer, size_t size, string eol) +{ + ScopedReadLock lock(this->pimpl_); + size_t eol_len = eol.length (); + uint8_t *buffer_ = static_cast + (alloca (size * sizeof (uint8_t))); + size_t read_so_far = 0; + while (true) + { + size_t bytes_read = this->read_ (buffer_ + read_so_far, 1); + read_so_far += bytes_read; + if (bytes_read == 0) { + break; // Timeout occured on reading 1 byte + } + if (string (reinterpret_cast + (buffer_ + read_so_far - eol_len), eol_len) == eol) { + break; // EOL found + } + if (read_so_far == size) { + break; // Reached the maximum read length + } + } + buffer.append(reinterpret_cast (buffer_), read_so_far); + return read_so_far; +} + +string +Serial::readline (size_t size, string eol) +{ + std::string buffer; + this->readline (buffer, size, eol); + return buffer; +} + +vector +Serial::readlines (size_t size, string eol) +{ + ScopedReadLock lock(this->pimpl_); + std::vector lines; + size_t eol_len = eol.length (); + uint8_t *buffer_ = static_cast + (alloca (size * sizeof (uint8_t))); + size_t read_so_far = 0; + size_t start_of_line = 0; + while (read_so_far < size) { + size_t bytes_read = this->read_ (buffer_+read_so_far, 1); + read_so_far += bytes_read; + if (bytes_read == 0) { + if (start_of_line != read_so_far) { + lines.push_back ( + string (reinterpret_cast (buffer_ + start_of_line), + read_so_far - start_of_line)); + } + break; // Timeout occured on reading 1 byte + } + if (string (reinterpret_cast + (buffer_ + read_so_far - eol_len), eol_len) == eol) { + // EOL found + lines.push_back( + string(reinterpret_cast (buffer_ + start_of_line), + read_so_far - start_of_line)); + start_of_line = read_so_far; + } + if (read_so_far == size) { + if (start_of_line != read_so_far) { + lines.push_back( + string(reinterpret_cast (buffer_ + start_of_line), + read_so_far - start_of_line)); + } + break; // Reached the maximum read length + } + } + return lines; +} + +size_t +Serial::write (const string &data) +{ + ScopedWriteLock lock(this->pimpl_); + return this->write_ (reinterpret_cast(data.c_str()), + data.length()); +} + +size_t +Serial::write (const std::vector &data) +{ + ScopedWriteLock lock(this->pimpl_); + return this->write_ (&data[0], data.size()); +} + +size_t +Serial::write (const uint8_t *data, size_t size) +{ + ScopedWriteLock lock(this->pimpl_); + return this->write_(data, size); +} + +size_t +Serial::write_ (const uint8_t *data, size_t length) +{ + return pimpl_->write (data, length); +} + +void +Serial::setPort (const string &port) +{ + ScopedReadLock rlock(this->pimpl_); + ScopedWriteLock wlock(this->pimpl_); + bool was_open = pimpl_->isOpen (); + if (was_open) close(); + pimpl_->setPort (port); + if (was_open) open (); +} + +string +Serial::getPort () const +{ + return pimpl_->getPort (); +} + +void +Serial::setTimeout (serial::Timeout &timeout) +{ + pimpl_->setTimeout (timeout); +} + +serial::Timeout +Serial::getTimeout () const { + return pimpl_->getTimeout (); +} + +void +Serial::setBaudrate (uint32_t baudrate) +{ + pimpl_->setBaudrate (baudrate); +} + +uint32_t +Serial::getBaudrate () const +{ + return uint32_t(pimpl_->getBaudrate ()); +} + +void +Serial::setBytesize (bytesize_t bytesize) +{ + pimpl_->setBytesize (bytesize); +} + +bytesize_t +Serial::getBytesize () const +{ + return pimpl_->getBytesize (); +} + +void +Serial::setParity (parity_t parity) +{ + pimpl_->setParity (parity); +} + +parity_t +Serial::getParity () const +{ + return pimpl_->getParity (); +} + +void +Serial::setStopbits (stopbits_t stopbits) +{ + pimpl_->setStopbits (stopbits); +} + +stopbits_t +Serial::getStopbits () const +{ + return pimpl_->getStopbits (); +} + +void +Serial::setFlowcontrol (flowcontrol_t flowcontrol) +{ + pimpl_->setFlowcontrol (flowcontrol); +} + +flowcontrol_t +Serial::getFlowcontrol () const +{ + return pimpl_->getFlowcontrol (); +} + +void Serial::flush () +{ + ScopedReadLock rlock(this->pimpl_); + ScopedWriteLock wlock(this->pimpl_); + pimpl_->flush (); +} + +void Serial::flushInput () +{ + ScopedReadLock lock(this->pimpl_); + pimpl_->flushInput (); +} + +void Serial::flushOutput () +{ + ScopedWriteLock lock(this->pimpl_); + pimpl_->flushOutput (); +} + +void Serial::sendBreak (int duration) +{ + pimpl_->sendBreak (duration); +} + +void Serial::setBreak (bool level) +{ + pimpl_->setBreak (level); +} + +void Serial::setRTS (bool level) +{ + pimpl_->setRTS (level); +} + +void Serial::setDTR (bool level) +{ + pimpl_->setDTR (level); +} + +bool Serial::waitForChange() +{ + return pimpl_->waitForChange(); +} + +bool Serial::getCTS () +{ + return pimpl_->getCTS (); +} + +bool Serial::getDSR () +{ + return pimpl_->getDSR (); +} + +bool Serial::getRI () +{ + return pimpl_->getRI (); +} + +bool Serial::getCD () +{ + return pimpl_->getCD (); +} \ No newline at end of file diff --git a/resources/README.txt b/resources/README.txt new file mode 100644 index 0000000..09e266d --- /dev/null +++ b/resources/README.txt @@ -0,0 +1,29 @@ +Sanic STAR +---------- +Gemaakt door Kenneth van Ewijk + +Een simpel spel waarbij het de bedoeling is dat je alle sterren oppakt. +Als je alle sterren hebt verzamelt, gaat hij naar de volgende wereld. +Er zijn momenteel slechts vier werelden. + +Opstarten en afsluiten: +Druk op starten in Visual Studio. (Release, x86) +Om af te sluiten, druk op ESC en kies Exit in het menu. + +Besturing: + - W en S voor vooruit/achteruit + - Muis om te sturen en te kijken + - Forceren van wereld veranderen (zonder alle sterren te verzamelen) door op de rechter pijltjestoets te drukken. + +Deze game bevat de volgende onderdelen: + - Bestuurbare third person camera + - In de scene zijn een aantal verschillende objecten + - De sterren draaien automatisch rond + - SANIC die je bestuurd en de sterren die je op kan pakken zijn objecten die te benvloeden zijn. + - De bomen staan stil. Een of meerdere objecten staan stil + - De bomen/gras/sanic/sterren worden uit een obj file geladen + - Het terrein wordt als heightmap met code gegenereerd. + - De rode sterren, bij speciale speed boost sterren, zijn relatieve transformaties + - Overal zit OpenGL belichting op + - Op alle objecten en op de heightmap zit texture mapping + - Toetsenbord wordt gebruikt voor besturing diff --git a/resources/models/Boom/Boom.mtl b/resources/models/Boom/Boom.mtl new file mode 100644 index 0000000..411989f --- /dev/null +++ b/resources/models/Boom/Boom.mtl @@ -0,0 +1,192 @@ +newmtl initialShadingGroup +illum 4 +Kd 0.21 0.09 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert2SG +illum 4 +Kd 0.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert3SG +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert4SG +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert5SG +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert6SG +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert8SG +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert9SG +illum 4 +Kd 1.00 1.00 1.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert10SG +illum 4 +Kd 0.12 0.28 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert11SG +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert2SG +illum 4 +Kd 0.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert2SG1 +illum 4 +Kd 0.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert2SG2 +illum 4 +Kd 0.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert2SG3 +illum 4 +Kd 0.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert2SG4 +illum 4 +Kd 0.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert3SG +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert3SG1 +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert3SG2 +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert3SG3 +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert3SG4 +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert4SG +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert4SG1 +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert4SG2 +illum 4 +Kd 0.50 0.21 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert5SG +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert5SG1 +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert5SG2 +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert6SG +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert6SG1 +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert6SG2 +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert8SG +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert8SG1 +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert8SG2 +illum 4 +Kd 0.00 0.16 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 diff --git a/resources/models/DarkGrass/Blauw.png b/resources/models/DarkGrass/Blauw.png new file mode 100644 index 0000000..5a1a9d9 Binary files /dev/null and b/resources/models/DarkGrass/Blauw.png differ diff --git a/resources/models/DarkGrass/grass.mtl b/resources/models/DarkGrass/grass.mtl new file mode 100644 index 0000000..1892abd --- /dev/null +++ b/resources/models/DarkGrass/grass.mtl @@ -0,0 +1,9 @@ +# WaveFront *.mtl file (generated by CINEMA 4D) + +newmtl Mat +Kd 0.80000001192093 0.80000001192093 0.80000001192093 +map_Kd Blauw.png +Ks 1.00000000000000 1.00000000000000 1.00000000000000 +Ns 100 +illum 7 + diff --git a/resources/models/DarkTree/m64_tree.png b/resources/models/DarkTree/m64_tree.png new file mode 100644 index 0000000..f834cd0 Binary files /dev/null and b/resources/models/DarkTree/m64_tree.png differ diff --git a/resources/models/DarkTree/n64tree.mtl b/resources/models/DarkTree/n64tree.mtl new file mode 100644 index 0000000..84c201a --- /dev/null +++ b/resources/models/DarkTree/n64tree.mtl @@ -0,0 +1,11 @@ +# Material file for n64tree.obj + +newmtl tree + Ns 0 + d 1 + illum 2 + Kd 0.8 0.8 0.8 + Ks 0.0 0.0 0.0 + Ka 0.2 0.2 0.2 + map_Kd m64_tree.png + diff --git a/resources/models/Grass/Blauw.png b/resources/models/Grass/Blauw.png new file mode 100644 index 0000000..f5280a9 Binary files /dev/null and b/resources/models/Grass/Blauw.png differ diff --git a/resources/models/Grass/grass.mtl b/resources/models/Grass/grass.mtl new file mode 100644 index 0000000..1892abd --- /dev/null +++ b/resources/models/Grass/grass.mtl @@ -0,0 +1,9 @@ +# WaveFront *.mtl file (generated by CINEMA 4D) + +newmtl Mat +Kd 0.80000001192093 0.80000001192093 0.80000001192093 +map_Kd Blauw.png +Ks 1.00000000000000 1.00000000000000 1.00000000000000 +Ns 100 +illum 7 + diff --git a/resources/models/Kart/Kart.mtl b/resources/models/Kart/Kart.mtl new file mode 100644 index 0000000..ef25e59 --- /dev/null +++ b/resources/models/Kart/Kart.mtl @@ -0,0 +1,147 @@ +newmtl bob1:initialShadingGroup +illum 4 +Kd 0.50 0.50 0.50 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl initialShadingGroup +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert2SG +illum 4 +Kd 0.20 0.32 0.50 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert5SG +illum 4 +Kd 1.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert6SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert7SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +map_Kd Screenshot_1.png +Ni 1.00 +newmtl lambert8SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +map_Kd Screenshot_1.png +Ni 1.00 +newmtl lambert10SG +illum 4 +Kd 1.00 1.00 1.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert12SG +illum 4 +Kd 0.58 0.00 1.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert13SG +illum 4 +Kd 0.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert14SG +illum 4 +Kd 1.00 1.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert15SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +map_Kd TheThing2.png +Ni 1.00 +newmtl lambert16SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +map_Kd SkateboardwielThing.png +Ni 1.00 +newmtl lambert17SG +illum 4 +Kd 0.25 0.25 0.25 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +Ks 0.50 0.50 0.50 +newmtl lambert18SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +map_Kd BobStoneTexture.png +Ni 1.00 +Ks 0.50 0.50 0.50 +newmtl lambert19SG +illum 4 +Kd 0.85 0.85 0.85 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert20SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 0.64 0.64 0.64 +Ni 1.00 +newmtl lambert21SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert22SG +illum 4 +Kd 0.50 0.50 0.50 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl lambert23SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +map_Kd Kart.png +Ni 1.00 +newmtl pasted__lambert2SG +illum 4 +Kd 0.00 0.00 0.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +map_Kd Screenshot_1.png +Ni 1.00 +newmtl pasted__lambert4SG +illum 4 +Kd 0.50 1.00 1.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 +newmtl pasted__lambert5SG +illum 4 +Kd 0.00 1.00 1.00 +Ka 0.00 0.00 0.00 +Tf 1.00 1.00 1.00 +Ni 1.00 diff --git a/resources/models/Kart/Kart.png b/resources/models/Kart/Kart.png new file mode 100644 index 0000000..3475e14 Binary files /dev/null and b/resources/models/Kart/Kart.png differ diff --git a/resources/models/Tree/m64_tree.png b/resources/models/Tree/m64_tree.png new file mode 100644 index 0000000..c66d949 Binary files /dev/null and b/resources/models/Tree/m64_tree.png differ diff --git a/resources/models/Tree/n64tree.mtl b/resources/models/Tree/n64tree.mtl new file mode 100644 index 0000000..84c201a --- /dev/null +++ b/resources/models/Tree/n64tree.mtl @@ -0,0 +1,11 @@ +# Material file for n64tree.obj + +newmtl tree + Ns 0 + d 1 + illum 2 + Kd 0.8 0.8 0.8 + Ks 0.0 0.0 0.0 + Ka 0.2 0.2 0.2 + map_Kd m64_tree.png + diff --git a/resources/models/box/box.mtl b/resources/models/box/box.mtl new file mode 100644 index 0000000..d326259 --- /dev/null +++ b/resources/models/box/box.mtl @@ -0,0 +1,13 @@ +# Blender MTL File: 'yoshi_falls.blend' +# Material Count: 1 + +newmtl box_mat +Ns 96.078431 +Ka 0.000000 0.000000 0.000000 +Kd 0.778039 0.778039 0.778039 +Ks 0.000000 0.000000 0.000000 +Ni 1.000000 +d 0.000000 +illum 1 +map_Kd box_mat.png +map_d box_mat.png diff --git a/resources/models/box/box_mat.png b/resources/models/box/box_mat.png new file mode 100644 index 0000000..582961b Binary files /dev/null and b/resources/models/box/box_mat.png differ diff --git a/resources/models/redstar/I_star.mtl b/resources/models/redstar/I_star.mtl new file mode 100644 index 0000000..f60d8e9 --- /dev/null +++ b/resources/models/redstar/I_star.mtl @@ -0,0 +1,9 @@ +# Created by Every File Explorer + +newmtl mat_star +Ka 1 1 1 +Kd 1 1 1 +Ks 0.1490196 0.1490196 0 +d 1 +map_Kd Tex/I_star.png + diff --git a/resources/models/redstar/Tex/I_star.png b/resources/models/redstar/Tex/I_star.png new file mode 100644 index 0000000..87f37e3 Binary files /dev/null and b/resources/models/redstar/Tex/I_star.png differ diff --git a/resources/models/star/I_star.mtl b/resources/models/star/I_star.mtl new file mode 100644 index 0000000..f60d8e9 --- /dev/null +++ b/resources/models/star/I_star.mtl @@ -0,0 +1,9 @@ +# Created by Every File Explorer + +newmtl mat_star +Ka 1 1 1 +Kd 1 1 1 +Ks 0.1490196 0.1490196 0 +d 1 +map_Kd Tex/I_star.png + diff --git a/resources/models/star/Tex/I_star.png b/resources/models/star/Tex/I_star.png new file mode 100644 index 0000000..5d04bd1 Binary files /dev/null and b/resources/models/star/Tex/I_star.png differ diff --git a/resources/skyboxes/dark/back.png b/resources/skyboxes/dark/back.png new file mode 100644 index 0000000..d5f2c97 Binary files /dev/null and b/resources/skyboxes/dark/back.png differ diff --git a/resources/skyboxes/dark/bottom.png b/resources/skyboxes/dark/bottom.png new file mode 100644 index 0000000..3fe1d47 Binary files /dev/null and b/resources/skyboxes/dark/bottom.png differ diff --git a/resources/skyboxes/dark/front.png b/resources/skyboxes/dark/front.png new file mode 100644 index 0000000..87b29dd Binary files /dev/null and b/resources/skyboxes/dark/front.png differ diff --git a/resources/skyboxes/dark/left.png b/resources/skyboxes/dark/left.png new file mode 100644 index 0000000..9b04eb4 Binary files /dev/null and b/resources/skyboxes/dark/left.png differ diff --git a/resources/skyboxes/dark/right.png b/resources/skyboxes/dark/right.png new file mode 100644 index 0000000..0423971 Binary files /dev/null and b/resources/skyboxes/dark/right.png differ diff --git a/resources/skyboxes/dark/top.png b/resources/skyboxes/dark/top.png new file mode 100644 index 0000000..1d0d926 Binary files /dev/null and b/resources/skyboxes/dark/top.png differ diff --git a/resources/skyboxes/sky/back.png 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new file mode 100644 index 0000000..02b446f Binary files /dev/null and b/resources/skyboxes/sky/top.png differ diff --git a/resources/sounds/Crystal.wav b/resources/sounds/Crystal.wav new file mode 100644 index 0000000..2d13707 Binary files /dev/null and b/resources/sounds/Crystal.wav differ diff --git a/resources/sounds/dark.wav b/resources/sounds/dark.wav new file mode 100644 index 0000000..d840b97 Binary files /dev/null and b/resources/sounds/dark.wav differ diff --git a/resources/sounds/race.wav b/resources/sounds/race.wav new file mode 100644 index 0000000..0f928d3 Binary files /dev/null and b/resources/sounds/race.wav differ diff --git a/resources/worlds/dark.json b/resources/worlds/dark.json new file mode 100644 index 0000000..ac879a7 --- /dev/null +++ b/resources/worlds/dark.json @@ -0,0 +1,29 @@ +{ + "world": { + "heightmap": "resources/worlds/dark.png", + "texture": "resources/worlds/darktexture.png", + "skybox": "resources/skyboxes/dark/", + "music": 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+ +typedef unsigned char stbi_uc; + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef STB_IMAGE_STATIC +#define STBIDEF static +#else +#define STBIDEF extern +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// PRIMARY API - works on images of any type +// + +// +// load image by filename, open file, or memory buffer +// + +typedef struct +{ + int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read + void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative + int (*eof) (void *user); // returns nonzero if we are at end of file/data +} stbi_io_callbacks; + +STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *comp, int req_comp); +STBIDEF stbi_uc *stbi_load_from_memory (stbi_uc const *buffer, int len , int *x, int *y, int *comp, int req_comp); +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk , void *user, int *x, int *y, int *comp, int req_comp); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *comp, int req_comp); +// for stbi_load_from_file, file pointer is left pointing immediately after image +#endif + +#ifndef STBI_NO_LINEAR + STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *comp, int req_comp); + STBIDEF float *stbi_loadf_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp); + STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp); + + #ifndef STBI_NO_STDIO + STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *comp, int req_comp); + #endif +#endif + +#ifndef STBI_NO_HDR + STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); + STBIDEF void stbi_hdr_to_ldr_scale(float scale); +#endif // STBI_NO_HDR + +#ifndef STBI_NO_LINEAR + STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); + STBIDEF void stbi_ldr_to_hdr_scale(float scale); +#endif // STBI_NO_LINEAR + +// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename); +STBIDEF int stbi_is_hdr_from_file(FILE *f); +#endif // STBI_NO_STDIO + + +// get a VERY brief reason for failure +// NOT THREADSAFE +STBIDEF const char *stbi_failure_reason (void); + +// free the loaded image -- this is just free() +STBIDEF void stbi_image_free (void *retval_from_stbi_load); + +// get image dimensions & components without fully decoding +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); + +#endif + + + +// for image formats that explicitly notate that they have premultiplied alpha, +// we just return the colors as stored in the file. set this flag to force +// unpremultiplication. results are undefined if the unpremultiply overflow. +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); + +// indicate whether we should process iphone images back to canonical format, +// or just pass them through "as-is" +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); + +// flip the image vertically, so the first pixel in the output array is the bottom left +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); + +// ZLIB client - used by PNG, available for other purposes + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); +STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + +STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + + +#ifdef __cplusplus +} +#endif + +// +// +//// end header file ///////////////////////////////////////////////////// +#endif // STBI_INCLUDE_STB_IMAGE_H + +#ifdef STB_IMAGE_IMPLEMENTATION + +#if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ + || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ + || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ + || defined(STBI_ONLY_ZLIB) + #ifndef STBI_ONLY_JPEG + #define STBI_NO_JPEG + #endif + #ifndef STBI_ONLY_PNG + #define STBI_NO_PNG + #endif + #ifndef STBI_ONLY_BMP + #define STBI_NO_BMP + #endif + #ifndef STBI_ONLY_PSD + #define STBI_NO_PSD + #endif + #ifndef STBI_ONLY_TGA + #define STBI_NO_TGA + #endif + #ifndef STBI_ONLY_GIF + #define STBI_NO_GIF + #endif + #ifndef STBI_ONLY_HDR + #define STBI_NO_HDR + #endif + #ifndef STBI_ONLY_PIC + #define STBI_NO_PIC + #endif + #ifndef STBI_ONLY_PNM + #define STBI_NO_PNM + #endif +#endif + +#if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) +#define STBI_NO_ZLIB +#endif + + +#include +#include // ptrdiff_t on osx +#include +#include + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +#include // ldexp +#endif + +#ifndef STBI_NO_STDIO +#include +#endif + +#ifndef STBI_ASSERT +#include +#define STBI_ASSERT(x) assert(x) +#endif + + +#ifndef _MSC_VER + #ifdef __cplusplus + #define stbi_inline inline + #else + #define stbi_inline + #endif +#else + #define stbi_inline __forceinline +#endif + + +#ifdef _MSC_VER +typedef unsigned short stbi__uint16; +typedef signed short stbi__int16; +typedef unsigned int stbi__uint32; +typedef signed int stbi__int32; +#else +#include +typedef uint16_t stbi__uint16; +typedef int16_t stbi__int16; +typedef uint32_t stbi__uint32; +typedef int32_t stbi__int32; +#endif + +// should produce compiler error if size is wrong +typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; + +#ifdef _MSC_VER +#define STBI_NOTUSED(v) (void)(v) +#else +#define STBI_NOTUSED(v) (void)sizeof(v) +#endif + +#ifdef _MSC_VER +#define STBI_HAS_LROTL +#endif + +#ifdef STBI_HAS_LROTL + #define stbi_lrot(x,y) _lrotl(x,y) +#else + #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y)))) +#endif + +#if defined(STBI_MALLOC) && defined(STBI_FREE) && (defined(STBI_REALLOC) || defined(STBI_REALLOC_SIZED)) +// ok +#elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) && !defined(STBI_REALLOC_SIZED) +// ok +#else +#error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC (or STBI_REALLOC_SIZED)." +#endif + +#ifndef STBI_MALLOC +#define STBI_MALLOC(sz) malloc(sz) +#define STBI_REALLOC(p,newsz) realloc(p,newsz) +#define STBI_FREE(p) free(p) +#endif + +#ifndef STBI_REALLOC_SIZED +#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) +#endif + +// x86/x64 detection +#if defined(__x86_64__) || defined(_M_X64) +#define STBI__X64_TARGET +#elif defined(__i386) || defined(_M_IX86) +#define STBI__X86_TARGET +#endif + +#if defined(__GNUC__) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) +// NOTE: not clear do we actually need this for the 64-bit path? +// gcc doesn't support sse2 intrinsics unless you compile with -msse2, +// (but compiling with -msse2 allows the compiler to use SSE2 everywhere; +// this is just broken and gcc are jerks for not fixing it properly +// http://www.virtualdub.org/blog/pivot/entry.php?id=363 ) +#define STBI_NO_SIMD +#endif + +#if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) +// Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET +// +// 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the +// Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. +// As a result, enabling SSE2 on 32-bit MinGW is dangerous when not +// simultaneously enabling "-mstackrealign". +// +// See https://github.com/nothings/stb/issues/81 for more information. +// +// So default to no SSE2 on 32-bit MinGW. If you've read this far and added +// -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. +#define STBI_NO_SIMD +#endif + +#if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) +#define STBI_SSE2 +#include + +#ifdef _MSC_VER + +#if _MSC_VER >= 1400 // not VC6 +#include // __cpuid +static int stbi__cpuid3(void) +{ + int info[4]; + __cpuid(info,1); + return info[3]; +} +#else +static int stbi__cpuid3(void) +{ + int res; + __asm { + mov eax,1 + cpuid + mov res,edx + } + return res; +} +#endif + +#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name + +static int stbi__sse2_available() +{ + int info3 = stbi__cpuid3(); + return ((info3 >> 26) & 1) != 0; +} +#else // assume GCC-style if not VC++ +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) + +static int stbi__sse2_available() +{ +#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 408 // GCC 4.8 or later + // GCC 4.8+ has a nice way to do this + return __builtin_cpu_supports("sse2"); +#else + // portable way to do this, preferably without using GCC inline ASM? + // just bail for now. + return 0; +#endif +} +#endif +#endif + +// ARM NEON +#if defined(STBI_NO_SIMD) && defined(STBI_NEON) +#undef STBI_NEON +#endif + +#ifdef STBI_NEON +#include +// assume GCC or Clang on ARM targets +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) +#endif + +#ifndef STBI_SIMD_ALIGN +#define STBI_SIMD_ALIGN(type, name) type name +#endif + +/////////////////////////////////////////////// +// +// stbi__context struct and start_xxx functions + +// stbi__context structure is our basic context used by all images, so it +// contains all the IO context, plus some basic image information +typedef struct +{ + stbi__uint32 img_x, img_y; + int img_n, img_out_n; + + stbi_io_callbacks io; + void *io_user_data; + + int read_from_callbacks; + int buflen; + stbi_uc buffer_start[128]; + + stbi_uc *img_buffer, *img_buffer_end; + stbi_uc *img_buffer_original, *img_buffer_original_end; +} stbi__context; + + +static void stbi__refill_buffer(stbi__context *s); + +// initialize a memory-decode context +static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) +{ + s->io.read = NULL; + s->read_from_callbacks = 0; + s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; + s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer+len; +} + +// initialize a callback-based context +static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) +{ + s->io = *c; + s->io_user_data = user; + s->buflen = sizeof(s->buffer_start); + s->read_from_callbacks = 1; + s->img_buffer_original = s->buffer_start; + stbi__refill_buffer(s); + s->img_buffer_original_end = s->img_buffer_end; +} + +#ifndef STBI_NO_STDIO + +static int stbi__stdio_read(void *user, char *data, int size) +{ + return (int) fread(data,1,size,(FILE*) user); +} + +static void stbi__stdio_skip(void *user, int n) +{ + fseek((FILE*) user, n, SEEK_CUR); +} + +static int stbi__stdio_eof(void *user) +{ + return feof((FILE*) user); +} + +static stbi_io_callbacks stbi__stdio_callbacks = +{ + stbi__stdio_read, + stbi__stdio_skip, + stbi__stdio_eof, +}; + +static void stbi__start_file(stbi__context *s, FILE *f) +{ + stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); +} + +//static void stop_file(stbi__context *s) { } + +#endif // !STBI_NO_STDIO + +static void stbi__rewind(stbi__context *s) +{ + // conceptually rewind SHOULD rewind to the beginning of the stream, + // but we just rewind to the beginning of the initial buffer, because + // we only use it after doing 'test', which only ever looks at at most 92 bytes + s->img_buffer = s->img_buffer_original; + s->img_buffer_end = s->img_buffer_original_end; +} + +#ifndef STBI_NO_JPEG +static int stbi__jpeg_test(stbi__context *s); +static stbi_uc *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNG +static int stbi__png_test(stbi__context *s); +static stbi_uc *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_BMP +static int stbi__bmp_test(stbi__context *s); +static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_TGA +static int stbi__tga_test(stbi__context *s); +static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s); +static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_HDR +static int stbi__hdr_test(stbi__context *s); +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_test(stbi__context *s); +static stbi_uc *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_GIF +static int stbi__gif_test(stbi__context *s); +static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNM +static int stbi__pnm_test(stbi__context *s); +static stbi_uc *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +// this is not threadsafe +static const char *stbi__g_failure_reason; + +STBIDEF const char *stbi_failure_reason(void) +{ + return stbi__g_failure_reason; +} + +static int stbi__err(const char *str) +{ + stbi__g_failure_reason = str; + return 0; +} + +static void *stbi__malloc(size_t size) +{ + return STBI_MALLOC(size); +} + +// stbi__err - error +// stbi__errpf - error returning pointer to float +// stbi__errpuc - error returning pointer to unsigned char + +#ifdef STBI_NO_FAILURE_STRINGS + #define stbi__err(x,y) 0 +#elif defined(STBI_FAILURE_USERMSG) + #define stbi__err(x,y) stbi__err(y) +#else + #define stbi__err(x,y) stbi__err(x) +#endif + +#define stbi__errpf(x,y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) +#define stbi__errpuc(x,y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) + +STBIDEF void stbi_image_free(void *retval_from_stbi_load) +{ + STBI_FREE(retval_from_stbi_load); +} + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); +#endif + +#ifndef STBI_NO_HDR +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); +#endif + +static int stbi__vertically_flip_on_load = 0; + +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) +{ + stbi__vertically_flip_on_load = flag_true_if_should_flip; +} + +static unsigned char *stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + #ifndef STBI_NO_JPEG + if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp); + #endif + #ifndef STBI_NO_PNG + if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp); + #endif + #ifndef STBI_NO_BMP + if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp); + #endif + #ifndef STBI_NO_GIF + if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp); + #endif + #ifndef STBI_NO_PSD + if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp); + #endif + #ifndef STBI_NO_PIC + if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp); + #endif + #ifndef STBI_NO_PNM + if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp); + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + float *hdr = stbi__hdr_load(s, x,y,comp,req_comp); + return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); + } + #endif + + #ifndef STBI_NO_TGA + // test tga last because it's a crappy test! + if (stbi__tga_test(s)) + return stbi__tga_load(s,x,y,comp,req_comp); + #endif + + return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); +} + +static unsigned char *stbi__load_flip(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *result = stbi__load_main(s, x, y, comp, req_comp); + + if (stbi__vertically_flip_on_load && result != NULL) { + int w = *x, h = *y; + int depth = req_comp ? req_comp : *comp; + int row,col,z; + stbi_uc temp; + + // @OPTIMIZE: use a bigger temp buffer and memcpy multiple pixels at once + for (row = 0; row < (h>>1); row++) { + for (col = 0; col < w; col++) { + for (z = 0; z < depth; z++) { + temp = result[(row * w + col) * depth + z]; + result[(row * w + col) * depth + z] = result[((h - row - 1) * w + col) * depth + z]; + result[((h - row - 1) * w + col) * depth + z] = temp; + } + } + } + } + + return result; +} + +#ifndef STBI_NO_HDR +static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) +{ + if (stbi__vertically_flip_on_load && result != NULL) { + int w = *x, h = *y; + int depth = req_comp ? req_comp : *comp; + int row,col,z; + float temp; + + // @OPTIMIZE: use a bigger temp buffer and memcpy multiple pixels at once + for (row = 0; row < (h>>1); row++) { + for (col = 0; col < w; col++) { + for (z = 0; z < depth; z++) { + temp = result[(row * w + col) * depth + z]; + result[(row * w + col) * depth + z] = result[((h - row - 1) * w + col) * depth + z]; + result[((h - row - 1) * w + col) * depth + z] = temp; + } + } + } + } +} +#endif + +#ifndef STBI_NO_STDIO + +static FILE *stbi__fopen(char const *filename, char const *mode) +{ + FILE *f; +#if defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) + f=0; +#else + f = fopen(filename, mode); +#endif + return f; +} + + +STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + unsigned char *result; + if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi__load_flip(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} +#endif //!STBI_NO_STDIO + +STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__load_flip(&s,x,y,comp,req_comp); +} + +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__load_flip(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_LINEAR +static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *data; + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp); + if (hdr_data) + stbi__float_postprocess(hdr_data,x,y,comp,req_comp); + return hdr_data; + } + #endif + data = stbi__load_flip(s, x, y, comp, req_comp); + if (data) + return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); + return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); +} + +STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +STBIDEF float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_STDIO +STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + float *result; + FILE *f = stbi__fopen(filename, "rb"); + if (!f) return stbi__errpf("can't fopen", "Unable to open file"); + result = stbi_loadf_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_file(&s,f); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} +#endif // !STBI_NO_STDIO + +#endif // !STBI_NO_LINEAR + +// these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is +// defined, for API simplicity; if STBI_NO_LINEAR is defined, it always +// reports false! + +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(buffer); + STBI_NOTUSED(len); + return 0; + #endif +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result=0; + if (f) { + result = stbi_is_hdr_from_file(f); + fclose(f); + } + return result; +} + +STBIDEF int stbi_is_hdr_from_file(FILE *f) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_file(&s,f); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(f); + return 0; + #endif +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(clbk); + STBI_NOTUSED(user); + return 0; + #endif +} + +#ifndef STBI_NO_LINEAR +static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; + +STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } +STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } +#endif + +static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; + +STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } +STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } + + +////////////////////////////////////////////////////////////////////////////// +// +// Common code used by all image loaders +// + +enum +{ + STBI__SCAN_load=0, + STBI__SCAN_type, + STBI__SCAN_header +}; + +static void stbi__refill_buffer(stbi__context *s) +{ + int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); + if (n == 0) { + // at end of file, treat same as if from memory, but need to handle case + // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file + s->read_from_callbacks = 0; + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start+1; + *s->img_buffer = 0; + } else { + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start + n; + } +} + +stbi_inline static stbi_uc stbi__get8(stbi__context *s) +{ + if (s->img_buffer < s->img_buffer_end) + return *s->img_buffer++; + if (s->read_from_callbacks) { + stbi__refill_buffer(s); + return *s->img_buffer++; + } + return 0; +} + +stbi_inline static int stbi__at_eof(stbi__context *s) +{ + if (s->io.read) { + if (!(s->io.eof)(s->io_user_data)) return 0; + // if feof() is true, check if buffer = end + // special case: we've only got the special 0 character at the end + if (s->read_from_callbacks == 0) return 1; + } + + return s->img_buffer >= s->img_buffer_end; +} + +static void stbi__skip(stbi__context *s, int n) +{ + if (n < 0) { + s->img_buffer = s->img_buffer_end; + return; + } + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + s->img_buffer = s->img_buffer_end; + (s->io.skip)(s->io_user_data, n - blen); + return; + } + } + s->img_buffer += n; +} + +static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) +{ + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + int res, count; + + memcpy(buffer, s->img_buffer, blen); + + count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); + res = (count == (n-blen)); + s->img_buffer = s->img_buffer_end; + return res; + } + } + + if (s->img_buffer+n <= s->img_buffer_end) { + memcpy(buffer, s->img_buffer, n); + s->img_buffer += n; + return 1; + } else + return 0; +} + +static int stbi__get16be(stbi__context *s) +{ + int z = stbi__get8(s); + return (z << 8) + stbi__get8(s); +} + +static stbi__uint32 stbi__get32be(stbi__context *s) +{ + stbi__uint32 z = stbi__get16be(s); + return (z << 16) + stbi__get16be(s); +} + +#if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) +// nothing +#else +static int stbi__get16le(stbi__context *s) +{ + int z = stbi__get8(s); + return z + (stbi__get8(s) << 8); +} +#endif + +#ifndef STBI_NO_BMP +static stbi__uint32 stbi__get32le(stbi__context *s) +{ + stbi__uint32 z = stbi__get16le(s); + return z + (stbi__get16le(s) << 16); +} +#endif + +#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings + + +////////////////////////////////////////////////////////////////////////////// +// +// generic converter from built-in img_n to req_comp +// individual types do this automatically as much as possible (e.g. jpeg +// does all cases internally since it needs to colorspace convert anyway, +// and it never has alpha, so very few cases ). png can automatically +// interleave an alpha=255 channel, but falls back to this for other cases +// +// assume data buffer is malloced, so malloc a new one and free that one +// only failure mode is malloc failing + +static stbi_uc stbi__compute_y(int r, int g, int b) +{ + return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); +} + +static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + unsigned char *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (unsigned char *) stbi__malloc(req_comp * x * y); + if (good == NULL) { + STBI_FREE(data); + return stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + unsigned char *src = data + j * x * img_n ; + unsigned char *dest = good + j * x * req_comp; + + #define COMBO(a,b) ((a)*8+(b)) + #define CASE(a,b) case COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (COMBO(img_n, req_comp)) { + CASE(1,2) dest[0]=src[0], dest[1]=255; break; + CASE(1,3) dest[0]=dest[1]=dest[2]=src[0]; break; + CASE(1,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; break; + CASE(2,1) dest[0]=src[0]; break; + CASE(2,3) dest[0]=dest[1]=dest[2]=src[0]; break; + CASE(2,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; break; + CASE(3,4) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; break; + CASE(3,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break; + CASE(3,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; break; + CASE(4,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break; + CASE(4,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; break; + CASE(4,3) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; break; + default: STBI_ASSERT(0); + } + #undef CASE + } + + STBI_FREE(data); + return good; +} + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) +{ + int i,k,n; + float *output = (float *) stbi__malloc(x * y * comp * sizeof(float)); + if (output == NULL) { STBI_FREE(data); return stbi__errpf("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); + } + if (k < comp) output[i*comp + k] = data[i*comp+k]/255.0f; + } + STBI_FREE(data); + return output; +} +#endif + +#ifndef STBI_NO_HDR +#define stbi__float2int(x) ((int) (x)) +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) +{ + int i,k,n; + stbi_uc *output = (stbi_uc *) stbi__malloc(x * y * comp); + if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + if (k < comp) { + float z = data[i*comp+k] * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + } + STBI_FREE(data); + return output; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// "baseline" JPEG/JFIF decoder +// +// simple implementation +// - doesn't support delayed output of y-dimension +// - simple interface (only one output format: 8-bit interleaved RGB) +// - doesn't try to recover corrupt jpegs +// - doesn't allow partial loading, loading multiple at once +// - still fast on x86 (copying globals into locals doesn't help x86) +// - allocates lots of intermediate memory (full size of all components) +// - non-interleaved case requires this anyway +// - allows good upsampling (see next) +// high-quality +// - upsampled channels are bilinearly interpolated, even across blocks +// - quality integer IDCT derived from IJG's 'slow' +// performance +// - fast huffman; reasonable integer IDCT +// - some SIMD kernels for common paths on targets with SSE2/NEON +// - uses a lot of intermediate memory, could cache poorly + +#ifndef STBI_NO_JPEG + +// huffman decoding acceleration +#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache + +typedef struct +{ + stbi_uc fast[1 << FAST_BITS]; + // weirdly, repacking this into AoS is a 10% speed loss, instead of a win + stbi__uint16 code[256]; + stbi_uc values[256]; + stbi_uc size[257]; + unsigned int maxcode[18]; + int delta[17]; // old 'firstsymbol' - old 'firstcode' +} stbi__huffman; + +typedef struct +{ + stbi__context *s; + stbi__huffman huff_dc[4]; + stbi__huffman huff_ac[4]; + stbi_uc dequant[4][64]; + stbi__int16 fast_ac[4][1 << FAST_BITS]; + +// sizes for components, interleaved MCUs + int img_h_max, img_v_max; + int img_mcu_x, img_mcu_y; + int img_mcu_w, img_mcu_h; + +// definition of jpeg image component + struct + { + int id; + int h,v; + int tq; + int hd,ha; + int dc_pred; + + int x,y,w2,h2; + stbi_uc *data; + void *raw_data, *raw_coeff; + stbi_uc *linebuf; + short *coeff; // progressive only + int coeff_w, coeff_h; // number of 8x8 coefficient blocks + } img_comp[4]; + + stbi__uint32 code_buffer; // jpeg entropy-coded buffer + int code_bits; // number of valid bits + unsigned char marker; // marker seen while filling entropy buffer + int nomore; // flag if we saw a marker so must stop + + int progressive; + int spec_start; + int spec_end; + int succ_high; + int succ_low; + int eob_run; + int rgb; + + int scan_n, order[4]; + int restart_interval, todo; + +// kernels + void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); + void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); + stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); +} stbi__jpeg; + +static int stbi__build_huffman(stbi__huffman *h, int *count) +{ + int i,j,k=0,code; + // build size list for each symbol (from JPEG spec) + for (i=0; i < 16; ++i) + for (j=0; j < count[i]; ++j) + h->size[k++] = (stbi_uc) (i+1); + h->size[k] = 0; + + // compute actual symbols (from jpeg spec) + code = 0; + k = 0; + for(j=1; j <= 16; ++j) { + // compute delta to add to code to compute symbol id + h->delta[j] = k - code; + if (h->size[k] == j) { + while (h->size[k] == j) + h->code[k++] = (stbi__uint16) (code++); + if (code-1 >= (1 << j)) return stbi__err("bad code lengths","Corrupt JPEG"); + } + // compute largest code + 1 for this size, preshifted as needed later + h->maxcode[j] = code << (16-j); + code <<= 1; + } + h->maxcode[j] = 0xffffffff; + + // build non-spec acceleration table; 255 is flag for not-accelerated + memset(h->fast, 255, 1 << FAST_BITS); + for (i=0; i < k; ++i) { + int s = h->size[i]; + if (s <= FAST_BITS) { + int c = h->code[i] << (FAST_BITS-s); + int m = 1 << (FAST_BITS-s); + for (j=0; j < m; ++j) { + h->fast[c+j] = (stbi_uc) i; + } + } + } + return 1; +} + +// build a table that decodes both magnitude and value of small ACs in +// one go. +static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) +{ + int i; + for (i=0; i < (1 << FAST_BITS); ++i) { + stbi_uc fast = h->fast[i]; + fast_ac[i] = 0; + if (fast < 255) { + int rs = h->values[fast]; + int run = (rs >> 4) & 15; + int magbits = rs & 15; + int len = h->size[fast]; + + if (magbits && len + magbits <= FAST_BITS) { + // magnitude code followed by receive_extend code + int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); + int m = 1 << (magbits - 1); + if (k < m) k += (-1 << magbits) + 1; + // if the result is small enough, we can fit it in fast_ac table + if (k >= -128 && k <= 127) + fast_ac[i] = (stbi__int16) ((k << 8) + (run << 4) + (len + magbits)); + } + } + } +} + +static void stbi__grow_buffer_unsafe(stbi__jpeg *j) +{ + do { + int b = j->nomore ? 0 : stbi__get8(j->s); + if (b == 0xff) { + int c = stbi__get8(j->s); + if (c != 0) { + j->marker = (unsigned char) c; + j->nomore = 1; + return; + } + } + j->code_buffer |= b << (24 - j->code_bits); + j->code_bits += 8; + } while (j->code_bits <= 24); +} + +// (1 << n) - 1 +static stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; + +// decode a jpeg huffman value from the bitstream +stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) +{ + unsigned int temp; + int c,k; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + // look at the top FAST_BITS and determine what symbol ID it is, + // if the code is <= FAST_BITS + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + k = h->fast[c]; + if (k < 255) { + int s = h->size[k]; + if (s > j->code_bits) + return -1; + j->code_buffer <<= s; + j->code_bits -= s; + return h->values[k]; + } + + // naive test is to shift the code_buffer down so k bits are + // valid, then test against maxcode. To speed this up, we've + // preshifted maxcode left so that it has (16-k) 0s at the + // end; in other words, regardless of the number of bits, it + // wants to be compared against something shifted to have 16; + // that way we don't need to shift inside the loop. + temp = j->code_buffer >> 16; + for (k=FAST_BITS+1 ; ; ++k) + if (temp < h->maxcode[k]) + break; + if (k == 17) { + // error! code not found + j->code_bits -= 16; + return -1; + } + + if (k > j->code_bits) + return -1; + + // convert the huffman code to the symbol id + c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; + STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); + + // convert the id to a symbol + j->code_bits -= k; + j->code_buffer <<= k; + return h->values[c]; +} + +// bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); + + sgn = (stbi__int32)j->code_buffer >> 31; // sign bit is always in MSB + k = stbi_lrot(j->code_buffer, n); + STBI_ASSERT(n >= 0 && n < (int) (sizeof(stbi__bmask)/sizeof(*stbi__bmask))); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k + (stbi__jbias[n] & ~sgn); +} + +// get some unsigned bits +stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) +{ + unsigned int k; + if (j->code_bits < n) stbi__grow_buffer_unsafe(j); + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k; +} + +stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) +{ + unsigned int k; + if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); + k = j->code_buffer; + j->code_buffer <<= 1; + --j->code_bits; + return k & 0x80000000; +} + +// given a value that's at position X in the zigzag stream, +// where does it appear in the 8x8 matrix coded as row-major? +static stbi_uc stbi__jpeg_dezigzag[64+15] = +{ + 0, 1, 8, 16, 9, 2, 3, 10, + 17, 24, 32, 25, 18, 11, 4, 5, + 12, 19, 26, 33, 40, 48, 41, 34, + 27, 20, 13, 6, 7, 14, 21, 28, + 35, 42, 49, 56, 57, 50, 43, 36, + 29, 22, 15, 23, 30, 37, 44, 51, + 58, 59, 52, 45, 38, 31, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63, + // let corrupt input sample past end + 63, 63, 63, 63, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 63, 63 +}; + +// decode one 64-entry block-- +static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi_uc *dequant) +{ + int diff,dc,k; + int t; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + + // 0 all the ac values now so we can do it 32-bits at a time + memset(data,0,64*sizeof(data[0])); + + diff = t ? stbi__extend_receive(j, t) : 0; + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + data[0] = (short) (dc * dequant[0]); + + // decode AC components, see JPEG spec + k = 1; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + j->code_buffer <<= s; + j->code_bits -= s; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) * dequant[zig]); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (rs != 0xf0) break; // end block + k += 16; + } else { + k += r; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); + } + } + } while (k < 64); + return 1; +} + +static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) +{ + int diff,dc; + int t; + if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + if (j->succ_high == 0) { + // first scan for DC coefficient, must be first + memset(data,0,64*sizeof(data[0])); // 0 all the ac values now + t = stbi__jpeg_huff_decode(j, hdc); + diff = t ? stbi__extend_receive(j, t) : 0; + + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + data[0] = (short) (dc << j->succ_low); + } else { + // refinement scan for DC coefficient + if (stbi__jpeg_get_bit(j)) + data[0] += (short) (1 << j->succ_low); + } + return 1; +} + +// @OPTIMIZE: store non-zigzagged during the decode passes, +// and only de-zigzag when dequantizing +static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) +{ + int k; + if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->succ_high == 0) { + int shift = j->succ_low; + + if (j->eob_run) { + --j->eob_run; + return 1; + } + + k = j->spec_start; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + j->code_buffer <<= s; + j->code_bits -= s; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) << shift); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r); + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + --j->eob_run; + break; + } + k += 16; + } else { + k += r; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) << shift); + } + } + } while (k <= j->spec_end); + } else { + // refinement scan for these AC coefficients + + short bit = (short) (1 << j->succ_low); + + if (j->eob_run) { + --j->eob_run; + for (k = j->spec_start; k <= j->spec_end; ++k) { + short *p = &data[stbi__jpeg_dezigzag[k]]; + if (*p != 0) + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } + } else { + k = j->spec_start; + do { + int r,s; + int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r) - 1; + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + r = 64; // force end of block + } else { + // r=15 s=0 should write 16 0s, so we just do + // a run of 15 0s and then write s (which is 0), + // so we don't have to do anything special here + } + } else { + if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); + // sign bit + if (stbi__jpeg_get_bit(j)) + s = bit; + else + s = -bit; + } + + // advance by r + while (k <= j->spec_end) { + short *p = &data[stbi__jpeg_dezigzag[k++]]; + if (*p != 0) { + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } else { + if (r == 0) { + *p = (short) s; + break; + } + --r; + } + } + } while (k <= j->spec_end); + } + } + return 1; +} + +// take a -128..127 value and stbi__clamp it and convert to 0..255 +stbi_inline static stbi_uc stbi__clamp(int x) +{ + // trick to use a single test to catch both cases + if ((unsigned int) x > 255) { + if (x < 0) return 0; + if (x > 255) return 255; + } + return (stbi_uc) x; +} + +#define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) +#define stbi__fsh(x) ((x) << 12) + +// derived from jidctint -- DCT_ISLOW +#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ + int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ + p2 = s2; \ + p3 = s6; \ + p1 = (p2+p3) * stbi__f2f(0.5411961f); \ + t2 = p1 + p3*stbi__f2f(-1.847759065f); \ + t3 = p1 + p2*stbi__f2f( 0.765366865f); \ + p2 = s0; \ + p3 = s4; \ + t0 = stbi__fsh(p2+p3); \ + t1 = stbi__fsh(p2-p3); \ + x0 = t0+t3; \ + x3 = t0-t3; \ + x1 = t1+t2; \ + x2 = t1-t2; \ + t0 = s7; \ + t1 = s5; \ + t2 = s3; \ + t3 = s1; \ + p3 = t0+t2; \ + p4 = t1+t3; \ + p1 = t0+t3; \ + p2 = t1+t2; \ + p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ + t0 = t0*stbi__f2f( 0.298631336f); \ + t1 = t1*stbi__f2f( 2.053119869f); \ + t2 = t2*stbi__f2f( 3.072711026f); \ + t3 = t3*stbi__f2f( 1.501321110f); \ + p1 = p5 + p1*stbi__f2f(-0.899976223f); \ + p2 = p5 + p2*stbi__f2f(-2.562915447f); \ + p3 = p3*stbi__f2f(-1.961570560f); \ + p4 = p4*stbi__f2f(-0.390180644f); \ + t3 += p1+p4; \ + t2 += p2+p3; \ + t1 += p2+p4; \ + t0 += p1+p3; + +static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) +{ + int i,val[64],*v=val; + stbi_uc *o; + short *d = data; + + // columns + for (i=0; i < 8; ++i,++d, ++v) { + // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing + if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 + && d[40]==0 && d[48]==0 && d[56]==0) { + // no shortcut 0 seconds + // (1|2|3|4|5|6|7)==0 0 seconds + // all separate -0.047 seconds + // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds + int dcterm = d[0] << 2; + v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; + } else { + STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) + // constants scaled things up by 1<<12; let's bring them back + // down, but keep 2 extra bits of precision + x0 += 512; x1 += 512; x2 += 512; x3 += 512; + v[ 0] = (x0+t3) >> 10; + v[56] = (x0-t3) >> 10; + v[ 8] = (x1+t2) >> 10; + v[48] = (x1-t2) >> 10; + v[16] = (x2+t1) >> 10; + v[40] = (x2-t1) >> 10; + v[24] = (x3+t0) >> 10; + v[32] = (x3-t0) >> 10; + } + } + + for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { + // no fast case since the first 1D IDCT spread components out + STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) + // constants scaled things up by 1<<12, plus we had 1<<2 from first + // loop, plus horizontal and vertical each scale by sqrt(8) so together + // we've got an extra 1<<3, so 1<<17 total we need to remove. + // so we want to round that, which means adding 0.5 * 1<<17, + // aka 65536. Also, we'll end up with -128 to 127 that we want + // to encode as 0..255 by adding 128, so we'll add that before the shift + x0 += 65536 + (128<<17); + x1 += 65536 + (128<<17); + x2 += 65536 + (128<<17); + x3 += 65536 + (128<<17); + // tried computing the shifts into temps, or'ing the temps to see + // if any were out of range, but that was slower + o[0] = stbi__clamp((x0+t3) >> 17); + o[7] = stbi__clamp((x0-t3) >> 17); + o[1] = stbi__clamp((x1+t2) >> 17); + o[6] = stbi__clamp((x1-t2) >> 17); + o[2] = stbi__clamp((x2+t1) >> 17); + o[5] = stbi__clamp((x2-t1) >> 17); + o[3] = stbi__clamp((x3+t0) >> 17); + o[4] = stbi__clamp((x3-t0) >> 17); + } +} + +#ifdef STBI_SSE2 +// sse2 integer IDCT. not the fastest possible implementation but it +// produces bit-identical results to the generic C version so it's +// fully "transparent". +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + // This is constructed to match our regular (generic) integer IDCT exactly. + __m128i row0, row1, row2, row3, row4, row5, row6, row7; + __m128i tmp; + + // dot product constant: even elems=x, odd elems=y + #define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) + + // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) + // out(1) = c1[even]*x + c1[odd]*y + #define dct_rot(out0,out1, x,y,c0,c1) \ + __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ + __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ + __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ + __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ + __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ + __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) + + // out = in << 12 (in 16-bit, out 32-bit) + #define dct_widen(out, in) \ + __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ + __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) + + // wide add + #define dct_wadd(out, a, b) \ + __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_add_epi32(a##_h, b##_h) + + // wide sub + #define dct_wsub(out, a, b) \ + __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) + + // butterfly a/b, add bias, then shift by "s" and pack + #define dct_bfly32o(out0, out1, a,b,bias,s) \ + { \ + __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ + __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ + dct_wadd(sum, abiased, b); \ + dct_wsub(dif, abiased, b); \ + out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ + out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ + } + + // 8-bit interleave step (for transposes) + #define dct_interleave8(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi8(a, b); \ + b = _mm_unpackhi_epi8(tmp, b) + + // 16-bit interleave step (for transposes) + #define dct_interleave16(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi16(a, b); \ + b = _mm_unpackhi_epi16(tmp, b) + + #define dct_pass(bias,shift) \ + { \ + /* even part */ \ + dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ + __m128i sum04 = _mm_add_epi16(row0, row4); \ + __m128i dif04 = _mm_sub_epi16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ + dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ + __m128i sum17 = _mm_add_epi16(row1, row7); \ + __m128i sum35 = _mm_add_epi16(row3, row5); \ + dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ + dct_wadd(x4, y0o, y4o); \ + dct_wadd(x5, y1o, y5o); \ + dct_wadd(x6, y2o, y5o); \ + dct_wadd(x7, y3o, y4o); \ + dct_bfly32o(row0,row7, x0,x7,bias,shift); \ + dct_bfly32o(row1,row6, x1,x6,bias,shift); \ + dct_bfly32o(row2,row5, x2,x5,bias,shift); \ + dct_bfly32o(row3,row4, x3,x4,bias,shift); \ + } + + __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); + __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); + __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); + __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); + __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); + __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); + __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); + __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); + + // rounding biases in column/row passes, see stbi__idct_block for explanation. + __m128i bias_0 = _mm_set1_epi32(512); + __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); + + // load + row0 = _mm_load_si128((const __m128i *) (data + 0*8)); + row1 = _mm_load_si128((const __m128i *) (data + 1*8)); + row2 = _mm_load_si128((const __m128i *) (data + 2*8)); + row3 = _mm_load_si128((const __m128i *) (data + 3*8)); + row4 = _mm_load_si128((const __m128i *) (data + 4*8)); + row5 = _mm_load_si128((const __m128i *) (data + 5*8)); + row6 = _mm_load_si128((const __m128i *) (data + 6*8)); + row7 = _mm_load_si128((const __m128i *) (data + 7*8)); + + // column pass + dct_pass(bias_0, 10); + + { + // 16bit 8x8 transpose pass 1 + dct_interleave16(row0, row4); + dct_interleave16(row1, row5); + dct_interleave16(row2, row6); + dct_interleave16(row3, row7); + + // transpose pass 2 + dct_interleave16(row0, row2); + dct_interleave16(row1, row3); + dct_interleave16(row4, row6); + dct_interleave16(row5, row7); + + // transpose pass 3 + dct_interleave16(row0, row1); + dct_interleave16(row2, row3); + dct_interleave16(row4, row5); + dct_interleave16(row6, row7); + } + + // row pass + dct_pass(bias_1, 17); + + { + // pack + __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 + __m128i p1 = _mm_packus_epi16(row2, row3); + __m128i p2 = _mm_packus_epi16(row4, row5); + __m128i p3 = _mm_packus_epi16(row6, row7); + + // 8bit 8x8 transpose pass 1 + dct_interleave8(p0, p2); // a0e0a1e1... + dct_interleave8(p1, p3); // c0g0c1g1... + + // transpose pass 2 + dct_interleave8(p0, p1); // a0c0e0g0... + dct_interleave8(p2, p3); // b0d0f0h0... + + // transpose pass 3 + dct_interleave8(p0, p2); // a0b0c0d0... + dct_interleave8(p1, p3); // a4b4c4d4... + + // store + _mm_storel_epi64((__m128i *) out, p0); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p2); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p1); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p3); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); + } + +#undef dct_const +#undef dct_rot +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_interleave8 +#undef dct_interleave16 +#undef dct_pass +} + +#endif // STBI_SSE2 + +#ifdef STBI_NEON + +// NEON integer IDCT. should produce bit-identical +// results to the generic C version. +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; + + int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); + int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); + int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); + int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); + int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); + int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); + int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); + int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); + int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); + int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); + int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); + int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); + +#define dct_long_mul(out, inq, coeff) \ + int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) + +#define dct_long_mac(out, acc, inq, coeff) \ + int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) + +#define dct_widen(out, inq) \ + int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ + int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) + +// wide add +#define dct_wadd(out, a, b) \ + int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vaddq_s32(a##_h, b##_h) + +// wide sub +#define dct_wsub(out, a, b) \ + int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vsubq_s32(a##_h, b##_h) + +// butterfly a/b, then shift using "shiftop" by "s" and pack +#define dct_bfly32o(out0,out1, a,b,shiftop,s) \ + { \ + dct_wadd(sum, a, b); \ + dct_wsub(dif, a, b); \ + out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ + out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ + } + +#define dct_pass(shiftop, shift) \ + { \ + /* even part */ \ + int16x8_t sum26 = vaddq_s16(row2, row6); \ + dct_long_mul(p1e, sum26, rot0_0); \ + dct_long_mac(t2e, p1e, row6, rot0_1); \ + dct_long_mac(t3e, p1e, row2, rot0_2); \ + int16x8_t sum04 = vaddq_s16(row0, row4); \ + int16x8_t dif04 = vsubq_s16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + int16x8_t sum15 = vaddq_s16(row1, row5); \ + int16x8_t sum17 = vaddq_s16(row1, row7); \ + int16x8_t sum35 = vaddq_s16(row3, row5); \ + int16x8_t sum37 = vaddq_s16(row3, row7); \ + int16x8_t sumodd = vaddq_s16(sum17, sum35); \ + dct_long_mul(p5o, sumodd, rot1_0); \ + dct_long_mac(p1o, p5o, sum17, rot1_1); \ + dct_long_mac(p2o, p5o, sum35, rot1_2); \ + dct_long_mul(p3o, sum37, rot2_0); \ + dct_long_mul(p4o, sum15, rot2_1); \ + dct_wadd(sump13o, p1o, p3o); \ + dct_wadd(sump24o, p2o, p4o); \ + dct_wadd(sump23o, p2o, p3o); \ + dct_wadd(sump14o, p1o, p4o); \ + dct_long_mac(x4, sump13o, row7, rot3_0); \ + dct_long_mac(x5, sump24o, row5, rot3_1); \ + dct_long_mac(x6, sump23o, row3, rot3_2); \ + dct_long_mac(x7, sump14o, row1, rot3_3); \ + dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ + dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ + dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ + dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ + } + + // load + row0 = vld1q_s16(data + 0*8); + row1 = vld1q_s16(data + 1*8); + row2 = vld1q_s16(data + 2*8); + row3 = vld1q_s16(data + 3*8); + row4 = vld1q_s16(data + 4*8); + row5 = vld1q_s16(data + 5*8); + row6 = vld1q_s16(data + 6*8); + row7 = vld1q_s16(data + 7*8); + + // add DC bias + row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); + + // column pass + dct_pass(vrshrn_n_s32, 10); + + // 16bit 8x8 transpose + { +// these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. +// whether compilers actually get this is another story, sadly. +#define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } +#define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } + + // pass 1 + dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 + dct_trn16(row2, row3); + dct_trn16(row4, row5); + dct_trn16(row6, row7); + + // pass 2 + dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 + dct_trn32(row1, row3); + dct_trn32(row4, row6); + dct_trn32(row5, row7); + + // pass 3 + dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 + dct_trn64(row1, row5); + dct_trn64(row2, row6); + dct_trn64(row3, row7); + +#undef dct_trn16 +#undef dct_trn32 +#undef dct_trn64 + } + + // row pass + // vrshrn_n_s32 only supports shifts up to 16, we need + // 17. so do a non-rounding shift of 16 first then follow + // up with a rounding shift by 1. + dct_pass(vshrn_n_s32, 16); + + { + // pack and round + uint8x8_t p0 = vqrshrun_n_s16(row0, 1); + uint8x8_t p1 = vqrshrun_n_s16(row1, 1); + uint8x8_t p2 = vqrshrun_n_s16(row2, 1); + uint8x8_t p3 = vqrshrun_n_s16(row3, 1); + uint8x8_t p4 = vqrshrun_n_s16(row4, 1); + uint8x8_t p5 = vqrshrun_n_s16(row5, 1); + uint8x8_t p6 = vqrshrun_n_s16(row6, 1); + uint8x8_t p7 = vqrshrun_n_s16(row7, 1); + + // again, these can translate into one instruction, but often don't. +#define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } +#define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } + + // sadly can't use interleaved stores here since we only write + // 8 bytes to each scan line! + + // 8x8 8-bit transpose pass 1 + dct_trn8_8(p0, p1); + dct_trn8_8(p2, p3); + dct_trn8_8(p4, p5); + dct_trn8_8(p6, p7); + + // pass 2 + dct_trn8_16(p0, p2); + dct_trn8_16(p1, p3); + dct_trn8_16(p4, p6); + dct_trn8_16(p5, p7); + + // pass 3 + dct_trn8_32(p0, p4); + dct_trn8_32(p1, p5); + dct_trn8_32(p2, p6); + dct_trn8_32(p3, p7); + + // store + vst1_u8(out, p0); out += out_stride; + vst1_u8(out, p1); out += out_stride; + vst1_u8(out, p2); out += out_stride; + vst1_u8(out, p3); out += out_stride; + vst1_u8(out, p4); out += out_stride; + vst1_u8(out, p5); out += out_stride; + vst1_u8(out, p6); out += out_stride; + vst1_u8(out, p7); + +#undef dct_trn8_8 +#undef dct_trn8_16 +#undef dct_trn8_32 + } + +#undef dct_long_mul +#undef dct_long_mac +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_pass +} + +#endif // STBI_NEON + +#define STBI__MARKER_none 0xff +// if there's a pending marker from the entropy stream, return that +// otherwise, fetch from the stream and get a marker. if there's no +// marker, return 0xff, which is never a valid marker value +static stbi_uc stbi__get_marker(stbi__jpeg *j) +{ + stbi_uc x; + if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } + x = stbi__get8(j->s); + if (x != 0xff) return STBI__MARKER_none; + while (x == 0xff) + x = stbi__get8(j->s); + return x; +} + +// in each scan, we'll have scan_n components, and the order +// of the components is specified by order[] +#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) + +// after a restart interval, stbi__jpeg_reset the entropy decoder and +// the dc prediction +static void stbi__jpeg_reset(stbi__jpeg *j) +{ + j->code_bits = 0; + j->code_buffer = 0; + j->nomore = 0; + j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = 0; + j->marker = STBI__MARKER_none; + j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; + j->eob_run = 0; + // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, + // since we don't even allow 1<<30 pixels +} + +static int stbi__parse_entropy_coded_data(stbi__jpeg *z) +{ + stbi__jpeg_reset(z); + if (!z->progressive) { + if (z->scan_n == 1) { + int i,j; + STBI_SIMD_ALIGN(short, data[64]); + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + // if it's NOT a restart, then just bail, so we get corrupt data + // rather than no data + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + STBI_SIMD_ALIGN(short, data[64]); + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x)*8; + int y2 = (j*z->img_comp[n].v + y)*8; + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } else { + if (z->scan_n == 1) { + int i,j; + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + if (z->spec_start == 0) { + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } else { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) + return 0; + } + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x); + int y2 = (j*z->img_comp[n].v + y); + short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } +} + +static void stbi__jpeg_dequantize(short *data, stbi_uc *dequant) +{ + int i; + for (i=0; i < 64; ++i) + data[i] *= dequant[i]; +} + +static void stbi__jpeg_finish(stbi__jpeg *z) +{ + if (z->progressive) { + // dequantize and idct the data + int i,j,n; + for (n=0; n < z->s->img_n; ++n) { + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + } + } + } + } +} + +static int stbi__process_marker(stbi__jpeg *z, int m) +{ + int L; + switch (m) { + case STBI__MARKER_none: // no marker found + return stbi__err("expected marker","Corrupt JPEG"); + + case 0xDD: // DRI - specify restart interval + if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); + z->restart_interval = stbi__get16be(z->s); + return 1; + + case 0xDB: // DQT - define quantization table + L = stbi__get16be(z->s)-2; + while (L > 0) { + int q = stbi__get8(z->s); + int p = q >> 4; + int t = q & 15,i; + if (p != 0) return stbi__err("bad DQT type","Corrupt JPEG"); + if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); + for (i=0; i < 64; ++i) + z->dequant[t][stbi__jpeg_dezigzag[i]] = stbi__get8(z->s); + L -= 65; + } + return L==0; + + case 0xC4: // DHT - define huffman table + L = stbi__get16be(z->s)-2; + while (L > 0) { + stbi_uc *v; + int sizes[16],i,n=0; + int q = stbi__get8(z->s); + int tc = q >> 4; + int th = q & 15; + if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); + for (i=0; i < 16; ++i) { + sizes[i] = stbi__get8(z->s); + n += sizes[i]; + } + L -= 17; + if (tc == 0) { + if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; + v = z->huff_dc[th].values; + } else { + if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; + v = z->huff_ac[th].values; + } + for (i=0; i < n; ++i) + v[i] = stbi__get8(z->s); + if (tc != 0) + stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); + L -= n; + } + return L==0; + } + // check for comment block or APP blocks + if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { + stbi__skip(z->s, stbi__get16be(z->s)-2); + return 1; + } + return 0; +} + +// after we see SOS +static int stbi__process_scan_header(stbi__jpeg *z) +{ + int i; + int Ls = stbi__get16be(z->s); + z->scan_n = stbi__get8(z->s); + if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); + if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); + for (i=0; i < z->scan_n; ++i) { + int id = stbi__get8(z->s), which; + int q = stbi__get8(z->s); + for (which = 0; which < z->s->img_n; ++which) + if (z->img_comp[which].id == id) + break; + if (which == z->s->img_n) return 0; // no match + z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); + z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); + z->order[i] = which; + } + + { + int aa; + z->spec_start = stbi__get8(z->s); + z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 + aa = stbi__get8(z->s); + z->succ_high = (aa >> 4); + z->succ_low = (aa & 15); + if (z->progressive) { + if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) + return stbi__err("bad SOS", "Corrupt JPEG"); + } else { + if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); + if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); + z->spec_end = 63; + } + } + + return 1; +} + +static int stbi__process_frame_header(stbi__jpeg *z, int scan) +{ + stbi__context *s = z->s; + int Lf,p,i,q, h_max=1,v_max=1,c; + Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG + p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline + s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG + s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires + c = stbi__get8(s); + if (c != 3 && c != 1) return stbi__err("bad component count","Corrupt JPEG"); // JFIF requires + s->img_n = c; + for (i=0; i < c; ++i) { + z->img_comp[i].data = NULL; + z->img_comp[i].linebuf = NULL; + } + + if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); + + z->rgb = 0; + for (i=0; i < s->img_n; ++i) { + static unsigned char rgb[3] = { 'R', 'G', 'B' }; + z->img_comp[i].id = stbi__get8(s); + if (z->img_comp[i].id != i+1) // JFIF requires + if (z->img_comp[i].id != i) { // some version of jpegtran outputs non-JFIF-compliant files! + // somethings output this (see http://fileformats.archiveteam.org/wiki/JPEG#Color_format) + if (z->img_comp[i].id != rgb[i]) + return stbi__err("bad component ID","Corrupt JPEG"); + ++z->rgb; + } + q = stbi__get8(s); + z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); + z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); + z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); + } + + if (scan != STBI__SCAN_load) return 1; + + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + + for (i=0; i < s->img_n; ++i) { + if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; + if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; + } + + // compute interleaved mcu info + z->img_h_max = h_max; + z->img_v_max = v_max; + z->img_mcu_w = h_max * 8; + z->img_mcu_h = v_max * 8; + z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; + z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; + + for (i=0; i < s->img_n; ++i) { + // number of effective pixels (e.g. for non-interleaved MCU) + z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; + z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; + // to simplify generation, we'll allocate enough memory to decode + // the bogus oversized data from using interleaved MCUs and their + // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't + // discard the extra data until colorspace conversion + z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; + z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; + z->img_comp[i].raw_data = stbi__malloc(z->img_comp[i].w2 * z->img_comp[i].h2+15); + + if (z->img_comp[i].raw_data == NULL) { + for(--i; i >= 0; --i) { + STBI_FREE(z->img_comp[i].raw_data); + z->img_comp[i].raw_data = NULL; + } + return stbi__err("outofmem", "Out of memory"); + } + // align blocks for idct using mmx/sse + z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); + z->img_comp[i].linebuf = NULL; + if (z->progressive) { + z->img_comp[i].coeff_w = (z->img_comp[i].w2 + 7) >> 3; + z->img_comp[i].coeff_h = (z->img_comp[i].h2 + 7) >> 3; + z->img_comp[i].raw_coeff = STBI_MALLOC(z->img_comp[i].coeff_w * z->img_comp[i].coeff_h * 64 * sizeof(short) + 15); + z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); + } else { + z->img_comp[i].coeff = 0; + z->img_comp[i].raw_coeff = 0; + } + } + + return 1; +} + +// use comparisons since in some cases we handle more than one case (e.g. SOF) +#define stbi__DNL(x) ((x) == 0xdc) +#define stbi__SOI(x) ((x) == 0xd8) +#define stbi__EOI(x) ((x) == 0xd9) +#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) +#define stbi__SOS(x) ((x) == 0xda) + +#define stbi__SOF_progressive(x) ((x) == 0xc2) + +static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) +{ + int m; + z->marker = STBI__MARKER_none; // initialize cached marker to empty + m = stbi__get_marker(z); + if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); + if (scan == STBI__SCAN_type) return 1; + m = stbi__get_marker(z); + while (!stbi__SOF(m)) { + if (!stbi__process_marker(z,m)) return 0; + m = stbi__get_marker(z); + while (m == STBI__MARKER_none) { + // some files have extra padding after their blocks, so ok, we'll scan + if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); + m = stbi__get_marker(z); + } + } + z->progressive = stbi__SOF_progressive(m); + if (!stbi__process_frame_header(z, scan)) return 0; + return 1; +} + +// decode image to YCbCr format +static int stbi__decode_jpeg_image(stbi__jpeg *j) +{ + int m; + for (m = 0; m < 4; m++) { + j->img_comp[m].raw_data = NULL; + j->img_comp[m].raw_coeff = NULL; + } + j->restart_interval = 0; + if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; + m = stbi__get_marker(j); + while (!stbi__EOI(m)) { + if (stbi__SOS(m)) { + if (!stbi__process_scan_header(j)) return 0; + if (!stbi__parse_entropy_coded_data(j)) return 0; + if (j->marker == STBI__MARKER_none ) { + // handle 0s at the end of image data from IP Kamera 9060 + while (!stbi__at_eof(j->s)) { + int x = stbi__get8(j->s); + if (x == 255) { + j->marker = stbi__get8(j->s); + break; + } else if (x != 0) { + return stbi__err("junk before marker", "Corrupt JPEG"); + } + } + // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 + } + } else { + if (!stbi__process_marker(j, m)) return 0; + } + m = stbi__get_marker(j); + } + if (j->progressive) + stbi__jpeg_finish(j); + return 1; +} + +// static jfif-centered resampling (across block boundaries) + +typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, + int w, int hs); + +#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) + +static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + STBI_NOTUSED(out); + STBI_NOTUSED(in_far); + STBI_NOTUSED(w); + STBI_NOTUSED(hs); + return in_near; +} + +static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples vertically for every one in input + int i; + STBI_NOTUSED(hs); + for (i=0; i < w; ++i) + out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); + return out; +} + +static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples horizontally for every one in input + int i; + stbi_uc *input = in_near; + + if (w == 1) { + // if only one sample, can't do any interpolation + out[0] = out[1] = input[0]; + return out; + } + + out[0] = input[0]; + out[1] = stbi__div4(input[0]*3 + input[1] + 2); + for (i=1; i < w-1; ++i) { + int n = 3*input[i]+2; + out[i*2+0] = stbi__div4(n+input[i-1]); + out[i*2+1] = stbi__div4(n+input[i+1]); + } + out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); + out[i*2+1] = input[w-1]; + + STBI_NOTUSED(in_far); + STBI_NOTUSED(hs); + + return out; +} + +#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) + +static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i,t0,t1; + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + out[0] = stbi__div4(t1+2); + for (i=1; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i=0,t0,t1; + + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + // process groups of 8 pixels for as long as we can. + // note we can't handle the last pixel in a row in this loop + // because we need to handle the filter boundary conditions. + for (; i < ((w-1) & ~7); i += 8) { +#if defined(STBI_SSE2) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + __m128i zero = _mm_setzero_si128(); + __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); + __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); + __m128i farw = _mm_unpacklo_epi8(farb, zero); + __m128i nearw = _mm_unpacklo_epi8(nearb, zero); + __m128i diff = _mm_sub_epi16(farw, nearw); + __m128i nears = _mm_slli_epi16(nearw, 2); + __m128i curr = _mm_add_epi16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + __m128i prv0 = _mm_slli_si128(curr, 2); + __m128i nxt0 = _mm_srli_si128(curr, 2); + __m128i prev = _mm_insert_epi16(prv0, t1, 0); + __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + __m128i bias = _mm_set1_epi16(8); + __m128i curs = _mm_slli_epi16(curr, 2); + __m128i prvd = _mm_sub_epi16(prev, curr); + __m128i nxtd = _mm_sub_epi16(next, curr); + __m128i curb = _mm_add_epi16(curs, bias); + __m128i even = _mm_add_epi16(prvd, curb); + __m128i odd = _mm_add_epi16(nxtd, curb); + + // interleave even and odd pixels, then undo scaling. + __m128i int0 = _mm_unpacklo_epi16(even, odd); + __m128i int1 = _mm_unpackhi_epi16(even, odd); + __m128i de0 = _mm_srli_epi16(int0, 4); + __m128i de1 = _mm_srli_epi16(int1, 4); + + // pack and write output + __m128i outv = _mm_packus_epi16(de0, de1); + _mm_storeu_si128((__m128i *) (out + i*2), outv); +#elif defined(STBI_NEON) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + uint8x8_t farb = vld1_u8(in_far + i); + uint8x8_t nearb = vld1_u8(in_near + i); + int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); + int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); + int16x8_t curr = vaddq_s16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + int16x8_t prv0 = vextq_s16(curr, curr, 7); + int16x8_t nxt0 = vextq_s16(curr, curr, 1); + int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); + int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + int16x8_t curs = vshlq_n_s16(curr, 2); + int16x8_t prvd = vsubq_s16(prev, curr); + int16x8_t nxtd = vsubq_s16(next, curr); + int16x8_t even = vaddq_s16(curs, prvd); + int16x8_t odd = vaddq_s16(curs, nxtd); + + // undo scaling and round, then store with even/odd phases interleaved + uint8x8x2_t o; + o.val[0] = vqrshrun_n_s16(even, 4); + o.val[1] = vqrshrun_n_s16(odd, 4); + vst2_u8(out + i*2, o); +#endif + + // "previous" value for next iter + t1 = 3*in_near[i+7] + in_far[i+7]; + } + + t0 = t1; + t1 = 3*in_near[i] + in_far[i]; + out[i*2] = stbi__div16(3*t1 + t0 + 8); + + for (++i; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} +#endif + +static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // resample with nearest-neighbor + int i,j; + STBI_NOTUSED(in_far); + for (i=0; i < w; ++i) + for (j=0; j < hs; ++j) + out[i*hs+j] = in_near[i]; + return out; +} + +#ifdef STBI_JPEG_OLD +// this is the same YCbCr-to-RGB calculation that stb_image has used +// historically before the algorithm changes in 1.49 +#define float2fixed(x) ((int) ((x) * 65536 + 0.5)) +static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) +{ + int i; + for (i=0; i < count; ++i) { + int y_fixed = (y[i] << 16) + 32768; // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr*float2fixed(1.40200f); + g = y_fixed - cr*float2fixed(0.71414f) - cb*float2fixed(0.34414f); + b = y_fixed + cb*float2fixed(1.77200f); + r >>= 16; + g >>= 16; + b >>= 16; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} +#else +// this is a reduced-precision calculation of YCbCr-to-RGB introduced +// to make sure the code produces the same results in both SIMD and scalar +#define float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) +static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) +{ + int i; + for (i=0; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* float2fixed(1.40200f); + g = y_fixed + (cr*-float2fixed(0.71414f)) + ((cb*-float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} +#endif + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) +{ + int i = 0; + +#ifdef STBI_SSE2 + // step == 3 is pretty ugly on the final interleave, and i'm not convinced + // it's useful in practice (you wouldn't use it for textures, for example). + // so just accelerate step == 4 case. + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + __m128i signflip = _mm_set1_epi8(-0x80); + __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); + __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); + __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); + __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); + __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); + __m128i xw = _mm_set1_epi16(255); // alpha channel + + for (; i+7 < count; i += 8) { + // load + __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); + __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); + __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); + __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 + __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 + + // unpack to short (and left-shift cr, cb by 8) + __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); + __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); + __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); + + // color transform + __m128i yws = _mm_srli_epi16(yw, 4); + __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); + __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); + __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); + __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); + __m128i rws = _mm_add_epi16(cr0, yws); + __m128i gwt = _mm_add_epi16(cb0, yws); + __m128i bws = _mm_add_epi16(yws, cb1); + __m128i gws = _mm_add_epi16(gwt, cr1); + + // descale + __m128i rw = _mm_srai_epi16(rws, 4); + __m128i bw = _mm_srai_epi16(bws, 4); + __m128i gw = _mm_srai_epi16(gws, 4); + + // back to byte, set up for transpose + __m128i brb = _mm_packus_epi16(rw, bw); + __m128i gxb = _mm_packus_epi16(gw, xw); + + // transpose to interleave channels + __m128i t0 = _mm_unpacklo_epi8(brb, gxb); + __m128i t1 = _mm_unpackhi_epi8(brb, gxb); + __m128i o0 = _mm_unpacklo_epi16(t0, t1); + __m128i o1 = _mm_unpackhi_epi16(t0, t1); + + // store + _mm_storeu_si128((__m128i *) (out + 0), o0); + _mm_storeu_si128((__m128i *) (out + 16), o1); + out += 32; + } + } +#endif + +#ifdef STBI_NEON + // in this version, step=3 support would be easy to add. but is there demand? + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + uint8x8_t signflip = vdup_n_u8(0x80); + int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); + int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); + int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); + int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); + + for (; i+7 < count; i += 8) { + // load + uint8x8_t y_bytes = vld1_u8(y + i); + uint8x8_t cr_bytes = vld1_u8(pcr + i); + uint8x8_t cb_bytes = vld1_u8(pcb + i); + int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); + int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); + + // expand to s16 + int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); + int16x8_t crw = vshll_n_s8(cr_biased, 7); + int16x8_t cbw = vshll_n_s8(cb_biased, 7); + + // color transform + int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); + int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); + int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); + int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); + int16x8_t rws = vaddq_s16(yws, cr0); + int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); + int16x8_t bws = vaddq_s16(yws, cb1); + + // undo scaling, round, convert to byte + uint8x8x4_t o; + o.val[0] = vqrshrun_n_s16(rws, 4); + o.val[1] = vqrshrun_n_s16(gws, 4); + o.val[2] = vqrshrun_n_s16(bws, 4); + o.val[3] = vdup_n_u8(255); + + // store, interleaving r/g/b/a + vst4_u8(out, o); + out += 8*4; + } + } +#endif + + for (; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* float2fixed(1.40200f); + g = y_fixed + cr*-float2fixed(0.71414f) + ((cb*-float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} +#endif + +// set up the kernels +static void stbi__setup_jpeg(stbi__jpeg *j) +{ + j->idct_block_kernel = stbi__idct_block; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; + +#ifdef STBI_SSE2 + if (stbi__sse2_available()) { + j->idct_block_kernel = stbi__idct_simd; + #ifndef STBI_JPEG_OLD + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + #endif + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; + } +#endif + +#ifdef STBI_NEON + j->idct_block_kernel = stbi__idct_simd; + #ifndef STBI_JPEG_OLD + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + #endif + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; +#endif +} + +// clean up the temporary component buffers +static void stbi__cleanup_jpeg(stbi__jpeg *j) +{ + int i; + for (i=0; i < j->s->img_n; ++i) { + if (j->img_comp[i].raw_data) { + STBI_FREE(j->img_comp[i].raw_data); + j->img_comp[i].raw_data = NULL; + j->img_comp[i].data = NULL; + } + if (j->img_comp[i].raw_coeff) { + STBI_FREE(j->img_comp[i].raw_coeff); + j->img_comp[i].raw_coeff = 0; + j->img_comp[i].coeff = 0; + } + if (j->img_comp[i].linebuf) { + STBI_FREE(j->img_comp[i].linebuf); + j->img_comp[i].linebuf = NULL; + } + } +} + +typedef struct +{ + resample_row_func resample; + stbi_uc *line0,*line1; + int hs,vs; // expansion factor in each axis + int w_lores; // horizontal pixels pre-expansion + int ystep; // how far through vertical expansion we are + int ypos; // which pre-expansion row we're on +} stbi__resample; + +static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) +{ + int n, decode_n; + z->s->img_n = 0; // make stbi__cleanup_jpeg safe + + // validate req_comp + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + + // load a jpeg image from whichever source, but leave in YCbCr format + if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } + + // determine actual number of components to generate + n = req_comp ? req_comp : z->s->img_n; + + if (z->s->img_n == 3 && n < 3) + decode_n = 1; + else + decode_n = z->s->img_n; + + // resample and color-convert + { + int k; + unsigned int i,j; + stbi_uc *output; + stbi_uc *coutput[4]; + + stbi__resample res_comp[4]; + + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + + // allocate line buffer big enough for upsampling off the edges + // with upsample factor of 4 + z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); + if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + r->hs = z->img_h_max / z->img_comp[k].h; + r->vs = z->img_v_max / z->img_comp[k].v; + r->ystep = r->vs >> 1; + r->w_lores = (z->s->img_x + r->hs-1) / r->hs; + r->ypos = 0; + r->line0 = r->line1 = z->img_comp[k].data; + + if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; + else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; + else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; + else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; + else r->resample = stbi__resample_row_generic; + } + + // can't error after this so, this is safe + output = (stbi_uc *) stbi__malloc(n * z->s->img_x * z->s->img_y + 1); + if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + // now go ahead and resample + for (j=0; j < z->s->img_y; ++j) { + stbi_uc *out = output + n * z->s->img_x * j; + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + int y_bot = r->ystep >= (r->vs >> 1); + coutput[k] = r->resample(z->img_comp[k].linebuf, + y_bot ? r->line1 : r->line0, + y_bot ? r->line0 : r->line1, + r->w_lores, r->hs); + if (++r->ystep >= r->vs) { + r->ystep = 0; + r->line0 = r->line1; + if (++r->ypos < z->img_comp[k].y) + r->line1 += z->img_comp[k].w2; + } + } + if (n >= 3) { + stbi_uc *y = coutput[0]; + if (z->s->img_n == 3) { + if (z->rgb == 3) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = y[i]; + out[1] = coutput[1][i]; + out[2] = coutput[2][i]; + out[3] = 255; + out += n; + } + } else { + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else + for (i=0; i < z->s->img_x; ++i) { + out[0] = out[1] = out[2] = y[i]; + out[3] = 255; // not used if n==3 + out += n; + } + } else { + stbi_uc *y = coutput[0]; + if (n == 1) + for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; + else + for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255; + } + } + stbi__cleanup_jpeg(z); + *out_x = z->s->img_x; + *out_y = z->s->img_y; + if (comp) *comp = z->s->img_n; // report original components, not output + return output; + } +} + +static unsigned char *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + unsigned char* result; + stbi__jpeg* j = (stbi__jpeg*) stbi__malloc(sizeof(stbi__jpeg)); + j->s = s; + stbi__setup_jpeg(j); + result = load_jpeg_image(j, x,y,comp,req_comp); + STBI_FREE(j); + return result; +} + +static int stbi__jpeg_test(stbi__context *s) +{ + int r; + stbi__jpeg j; + j.s = s; + stbi__setup_jpeg(&j); + r = stbi__decode_jpeg_header(&j, STBI__SCAN_type); + stbi__rewind(s); + return r; +} + +static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) +{ + if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { + stbi__rewind( j->s ); + return 0; + } + if (x) *x = j->s->img_x; + if (y) *y = j->s->img_y; + if (comp) *comp = j->s->img_n; + return 1; +} + +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) +{ + int result; + stbi__jpeg* j = (stbi__jpeg*) (stbi__malloc(sizeof(stbi__jpeg))); + j->s = s; + result = stbi__jpeg_info_raw(j, x, y, comp); + STBI_FREE(j); + return result; +} +#endif + +// public domain zlib decode v0.2 Sean Barrett 2006-11-18 +// simple implementation +// - all input must be provided in an upfront buffer +// - all output is written to a single output buffer (can malloc/realloc) +// performance +// - fast huffman + +#ifndef STBI_NO_ZLIB + +// fast-way is faster to check than jpeg huffman, but slow way is slower +#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables +#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) + +// zlib-style huffman encoding +// (jpegs packs from left, zlib from right, so can't share code) +typedef struct +{ + stbi__uint16 fast[1 << STBI__ZFAST_BITS]; + stbi__uint16 firstcode[16]; + int maxcode[17]; + stbi__uint16 firstsymbol[16]; + stbi_uc size[288]; + stbi__uint16 value[288]; +} stbi__zhuffman; + +stbi_inline static int stbi__bitreverse16(int n) +{ + n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); + n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); + n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); + n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); + return n; +} + +stbi_inline static int stbi__bit_reverse(int v, int bits) +{ + STBI_ASSERT(bits <= 16); + // to bit reverse n bits, reverse 16 and shift + // e.g. 11 bits, bit reverse and shift away 5 + return stbi__bitreverse16(v) >> (16-bits); +} + +static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num) +{ + int i,k=0; + int code, next_code[16], sizes[17]; + + // DEFLATE spec for generating codes + memset(sizes, 0, sizeof(sizes)); + memset(z->fast, 0, sizeof(z->fast)); + for (i=0; i < num; ++i) + ++sizes[sizelist[i]]; + sizes[0] = 0; + for (i=1; i < 16; ++i) + if (sizes[i] > (1 << i)) + return stbi__err("bad sizes", "Corrupt PNG"); + code = 0; + for (i=1; i < 16; ++i) { + next_code[i] = code; + z->firstcode[i] = (stbi__uint16) code; + z->firstsymbol[i] = (stbi__uint16) k; + code = (code + sizes[i]); + if (sizes[i]) + if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); + z->maxcode[i] = code << (16-i); // preshift for inner loop + code <<= 1; + k += sizes[i]; + } + z->maxcode[16] = 0x10000; // sentinel + for (i=0; i < num; ++i) { + int s = sizelist[i]; + if (s) { + int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; + stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); + z->size [c] = (stbi_uc ) s; + z->value[c] = (stbi__uint16) i; + if (s <= STBI__ZFAST_BITS) { + int j = stbi__bit_reverse(next_code[s],s); + while (j < (1 << STBI__ZFAST_BITS)) { + z->fast[j] = fastv; + j += (1 << s); + } + } + ++next_code[s]; + } + } + return 1; +} + +// zlib-from-memory implementation for PNG reading +// because PNG allows splitting the zlib stream arbitrarily, +// and it's annoying structurally to have PNG call ZLIB call PNG, +// we require PNG read all the IDATs and combine them into a single +// memory buffer + +typedef struct +{ + stbi_uc *zbuffer, *zbuffer_end; + int num_bits; + stbi__uint32 code_buffer; + + char *zout; + char *zout_start; + char *zout_end; + int z_expandable; + + stbi__zhuffman z_length, z_distance; +} stbi__zbuf; + +stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) +{ + if (z->zbuffer >= z->zbuffer_end) return 0; + return *z->zbuffer++; +} + +static void stbi__fill_bits(stbi__zbuf *z) +{ + do { + STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); + z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; + z->num_bits += 8; + } while (z->num_bits <= 24); +} + +stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) +{ + unsigned int k; + if (z->num_bits < n) stbi__fill_bits(z); + k = z->code_buffer & ((1 << n) - 1); + z->code_buffer >>= n; + z->num_bits -= n; + return k; +} + +static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s,k; + // not resolved by fast table, so compute it the slow way + // use jpeg approach, which requires MSbits at top + k = stbi__bit_reverse(a->code_buffer, 16); + for (s=STBI__ZFAST_BITS+1; ; ++s) + if (k < z->maxcode[s]) + break; + if (s == 16) return -1; // invalid code! + // code size is s, so: + b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; + STBI_ASSERT(z->size[b] == s); + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; +} + +stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s; + if (a->num_bits < 16) stbi__fill_bits(a); + b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; + if (b) { + s = b >> 9; + a->code_buffer >>= s; + a->num_bits -= s; + return b & 511; + } + return stbi__zhuffman_decode_slowpath(a, z); +} + +static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes +{ + char *q; + int cur, limit, old_limit; + z->zout = zout; + if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); + cur = (int) (z->zout - z->zout_start); + limit = old_limit = (int) (z->zout_end - z->zout_start); + while (cur + n > limit) + limit *= 2; + q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); + STBI_NOTUSED(old_limit); + if (q == NULL) return stbi__err("outofmem", "Out of memory"); + z->zout_start = q; + z->zout = q + cur; + z->zout_end = q + limit; + return 1; +} + +static int stbi__zlength_base[31] = { + 3,4,5,6,7,8,9,10,11,13, + 15,17,19,23,27,31,35,43,51,59, + 67,83,99,115,131,163,195,227,258,0,0 }; + +static int stbi__zlength_extra[31]= +{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; + +static int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, +257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; + +static int stbi__zdist_extra[32] = +{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; + +static int stbi__parse_huffman_block(stbi__zbuf *a) +{ + char *zout = a->zout; + for(;;) { + int z = stbi__zhuffman_decode(a, &a->z_length); + if (z < 256) { + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes + if (zout >= a->zout_end) { + if (!stbi__zexpand(a, zout, 1)) return 0; + zout = a->zout; + } + *zout++ = (char) z; + } else { + stbi_uc *p; + int len,dist; + if (z == 256) { + a->zout = zout; + return 1; + } + z -= 257; + len = stbi__zlength_base[z]; + if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); + z = stbi__zhuffman_decode(a, &a->z_distance); + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); + dist = stbi__zdist_base[z]; + if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); + if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); + if (zout + len > a->zout_end) { + if (!stbi__zexpand(a, zout, len)) return 0; + zout = a->zout; + } + p = (stbi_uc *) (zout - dist); + if (dist == 1) { // run of one byte; common in images. + stbi_uc v = *p; + if (len) { do *zout++ = v; while (--len); } + } else { + if (len) { do *zout++ = *p++; while (--len); } + } + } + } +} + +static int stbi__compute_huffman_codes(stbi__zbuf *a) +{ + static stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; + stbi__zhuffman z_codelength; + stbi_uc lencodes[286+32+137];//padding for maximum single op + stbi_uc codelength_sizes[19]; + int i,n; + + int hlit = stbi__zreceive(a,5) + 257; + int hdist = stbi__zreceive(a,5) + 1; + int hclen = stbi__zreceive(a,4) + 4; + + memset(codelength_sizes, 0, sizeof(codelength_sizes)); + for (i=0; i < hclen; ++i) { + int s = stbi__zreceive(a,3); + codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; + } + if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + + n = 0; + while (n < hlit + hdist) { + int c = stbi__zhuffman_decode(a, &z_codelength); + if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); + if (c < 16) + lencodes[n++] = (stbi_uc) c; + else if (c == 16) { + c = stbi__zreceive(a,2)+3; + memset(lencodes+n, lencodes[n-1], c); + n += c; + } else if (c == 17) { + c = stbi__zreceive(a,3)+3; + memset(lencodes+n, 0, c); + n += c; + } else { + STBI_ASSERT(c == 18); + c = stbi__zreceive(a,7)+11; + memset(lencodes+n, 0, c); + n += c; + } + } + if (n != hlit+hdist) return stbi__err("bad codelengths","Corrupt PNG"); + if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; + return 1; +} + +static int stbi__parse_uncompressed_block(stbi__zbuf *a) +{ + stbi_uc header[4]; + int len,nlen,k; + if (a->num_bits & 7) + stbi__zreceive(a, a->num_bits & 7); // discard + // drain the bit-packed data into header + k = 0; + while (a->num_bits > 0) { + header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check + a->code_buffer >>= 8; + a->num_bits -= 8; + } + STBI_ASSERT(a->num_bits == 0); + // now fill header the normal way + while (k < 4) + header[k++] = stbi__zget8(a); + len = header[1] * 256 + header[0]; + nlen = header[3] * 256 + header[2]; + if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); + if (a->zout + len > a->zout_end) + if (!stbi__zexpand(a, a->zout, len)) return 0; + memcpy(a->zout, a->zbuffer, len); + a->zbuffer += len; + a->zout += len; + return 1; +} + +static int stbi__parse_zlib_header(stbi__zbuf *a) +{ + int cmf = stbi__zget8(a); + int cm = cmf & 15; + /* int cinfo = cmf >> 4; */ + int flg = stbi__zget8(a); + if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec + if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png + if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png + // window = 1 << (8 + cinfo)... but who cares, we fully buffer output + return 1; +} + +// @TODO: should statically initialize these for optimal thread safety +static stbi_uc stbi__zdefault_length[288], stbi__zdefault_distance[32]; +static void stbi__init_zdefaults(void) +{ + int i; // use <= to match clearly with spec + for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; + + for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; +} + +static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) +{ + int final, type; + if (parse_header) + if (!stbi__parse_zlib_header(a)) return 0; + a->num_bits = 0; + a->code_buffer = 0; + do { + final = stbi__zreceive(a,1); + type = stbi__zreceive(a,2); + if (type == 0) { + if (!stbi__parse_uncompressed_block(a)) return 0; + } else if (type == 3) { + return 0; + } else { + if (type == 1) { + // use fixed code lengths + if (!stbi__zdefault_distance[31]) stbi__init_zdefaults(); + if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; + } else { + if (!stbi__compute_huffman_codes(a)) return 0; + } + if (!stbi__parse_huffman_block(a)) return 0; + } + } while (!final); + return 1; +} + +static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) +{ + a->zout_start = obuf; + a->zout = obuf; + a->zout_end = obuf + olen; + a->z_expandable = exp; + + return stbi__parse_zlib(a, parse_header); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) +{ + return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(16384); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer+len; + if (stbi__do_zlib(&a, p, 16384, 1, 0)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) + return (int) (a.zout - a.zout_start); + else + return -1; +} +#endif + +// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 +// simple implementation +// - only 8-bit samples +// - no CRC checking +// - allocates lots of intermediate memory +// - avoids problem of streaming data between subsystems +// - avoids explicit window management +// performance +// - uses stb_zlib, a PD zlib implementation with fast huffman decoding + +#ifndef STBI_NO_PNG +typedef struct +{ + stbi__uint32 length; + stbi__uint32 type; +} stbi__pngchunk; + +static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) +{ + stbi__pngchunk c; + c.length = stbi__get32be(s); + c.type = stbi__get32be(s); + return c; +} + +static int stbi__check_png_header(stbi__context *s) +{ + static stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; + int i; + for (i=0; i < 8; ++i) + if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); + return 1; +} + +typedef struct +{ + stbi__context *s; + stbi_uc *idata, *expanded, *out; + int depth; +} stbi__png; + + +enum { + STBI__F_none=0, + STBI__F_sub=1, + STBI__F_up=2, + STBI__F_avg=3, + STBI__F_paeth=4, + // synthetic filters used for first scanline to avoid needing a dummy row of 0s + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static stbi_uc first_row_filter[5] = +{ + STBI__F_none, + STBI__F_sub, + STBI__F_none, + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static int stbi__paeth(int a, int b, int c) +{ + int p = a + b - c; + int pa = abs(p-a); + int pb = abs(p-b); + int pc = abs(p-c); + if (pa <= pb && pa <= pc) return a; + if (pb <= pc) return b; + return c; +} + +static stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; + +// create the png data from post-deflated data +static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) +{ + int bytes = (depth == 16? 2 : 1); + stbi__context *s = a->s; + stbi__uint32 i,j,stride = x*out_n*bytes; + stbi__uint32 img_len, img_width_bytes; + int k; + int img_n = s->img_n; // copy it into a local for later + + int output_bytes = out_n*bytes; + int filter_bytes = img_n*bytes; + int width = x; + + STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); + a->out = (stbi_uc *) stbi__malloc(x * y * output_bytes); // extra bytes to write off the end into + if (!a->out) return stbi__err("outofmem", "Out of memory"); + + img_width_bytes = (((img_n * x * depth) + 7) >> 3); + img_len = (img_width_bytes + 1) * y; + if (s->img_x == x && s->img_y == y) { + if (raw_len != img_len) return stbi__err("not enough pixels","Corrupt PNG"); + } else { // interlaced: + if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); + } + + for (j=0; j < y; ++j) { + stbi_uc *cur = a->out + stride*j; + stbi_uc *prior = cur - stride; + int filter = *raw++; + + if (filter > 4) + return stbi__err("invalid filter","Corrupt PNG"); + + if (depth < 8) { + STBI_ASSERT(img_width_bytes <= x); + cur += x*out_n - img_width_bytes; // store output to the rightmost img_len bytes, so we can decode in place + filter_bytes = 1; + width = img_width_bytes; + } + + // if first row, use special filter that doesn't sample previous row + if (j == 0) filter = first_row_filter[filter]; + + // handle first byte explicitly + for (k=0; k < filter_bytes; ++k) { + switch (filter) { + case STBI__F_none : cur[k] = raw[k]; break; + case STBI__F_sub : cur[k] = raw[k]; break; + case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; + case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; + case STBI__F_avg_first : cur[k] = raw[k]; break; + case STBI__F_paeth_first: cur[k] = raw[k]; break; + } + } + + if (depth == 8) { + if (img_n != out_n) + cur[img_n] = 255; // first pixel + raw += img_n; + cur += out_n; + prior += out_n; + } else if (depth == 16) { + if (img_n != out_n) { + cur[filter_bytes] = 255; // first pixel top byte + cur[filter_bytes+1] = 255; // first pixel bottom byte + } + raw += filter_bytes; + cur += output_bytes; + prior += output_bytes; + } else { + raw += 1; + cur += 1; + prior += 1; + } + + // this is a little gross, so that we don't switch per-pixel or per-component + if (depth < 8 || img_n == out_n) { + int nk = (width - 1)*filter_bytes; + #define CASE(f) \ + case f: \ + for (k=0; k < nk; ++k) + switch (filter) { + // "none" filter turns into a memcpy here; make that explicit. + case STBI__F_none: memcpy(cur, raw, nk); break; + CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); break; + CASE(STBI__F_up) cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); break; + CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); break; + CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); break; + CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],0,0)); break; + } + #undef CASE + raw += nk; + } else { + STBI_ASSERT(img_n+1 == out_n); + #define CASE(f) \ + case f: \ + for (i=x-1; i >= 1; --i, cur[filter_bytes]=255,raw+=filter_bytes,cur+=output_bytes,prior+=output_bytes) \ + for (k=0; k < filter_bytes; ++k) + switch (filter) { + CASE(STBI__F_none) cur[k] = raw[k]; break; + CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); break; + CASE(STBI__F_up) cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); break; + CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); break; + CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); break; + CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],0,0)); break; + } + #undef CASE + + // the loop above sets the high byte of the pixels' alpha, but for + // 16 bit png files we also need the low byte set. we'll do that here. + if (depth == 16) { + cur = a->out + stride*j; // start at the beginning of the row again + for (i=0; i < x; ++i,cur+=output_bytes) { + cur[filter_bytes+1] = 255; + } + } + } + } + + // we make a separate pass to expand bits to pixels; for performance, + // this could run two scanlines behind the above code, so it won't + // intefere with filtering but will still be in the cache. + if (depth < 8) { + for (j=0; j < y; ++j) { + stbi_uc *cur = a->out + stride*j; + stbi_uc *in = a->out + stride*j + x*out_n - img_width_bytes; + // unpack 1/2/4-bit into a 8-bit buffer. allows us to keep the common 8-bit path optimal at minimal cost for 1/2/4-bit + // png guarante byte alignment, if width is not multiple of 8/4/2 we'll decode dummy trailing data that will be skipped in the later loop + stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range + + // note that the final byte might overshoot and write more data than desired. + // we can allocate enough data that this never writes out of memory, but it + // could also overwrite the next scanline. can it overwrite non-empty data + // on the next scanline? yes, consider 1-pixel-wide scanlines with 1-bit-per-pixel. + // so we need to explicitly clamp the final ones + + if (depth == 4) { + for (k=x*img_n; k >= 2; k-=2, ++in) { + *cur++ = scale * ((*in >> 4) ); + *cur++ = scale * ((*in ) & 0x0f); + } + if (k > 0) *cur++ = scale * ((*in >> 4) ); + } else if (depth == 2) { + for (k=x*img_n; k >= 4; k-=4, ++in) { + *cur++ = scale * ((*in >> 6) ); + *cur++ = scale * ((*in >> 4) & 0x03); + *cur++ = scale * ((*in >> 2) & 0x03); + *cur++ = scale * ((*in ) & 0x03); + } + if (k > 0) *cur++ = scale * ((*in >> 6) ); + if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03); + if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03); + } else if (depth == 1) { + for (k=x*img_n; k >= 8; k-=8, ++in) { + *cur++ = scale * ((*in >> 7) ); + *cur++ = scale * ((*in >> 6) & 0x01); + *cur++ = scale * ((*in >> 5) & 0x01); + *cur++ = scale * ((*in >> 4) & 0x01); + *cur++ = scale * ((*in >> 3) & 0x01); + *cur++ = scale * ((*in >> 2) & 0x01); + *cur++ = scale * ((*in >> 1) & 0x01); + *cur++ = scale * ((*in ) & 0x01); + } + if (k > 0) *cur++ = scale * ((*in >> 7) ); + if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01); + if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01); + if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01); + if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01); + if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01); + if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01); + } + if (img_n != out_n) { + int q; + // insert alpha = 255 + cur = a->out + stride*j; + if (img_n == 1) { + for (q=x-1; q >= 0; --q) { + cur[q*2+1] = 255; + cur[q*2+0] = cur[q]; + } + } else { + STBI_ASSERT(img_n == 3); + for (q=x-1; q >= 0; --q) { + cur[q*4+3] = 255; + cur[q*4+2] = cur[q*3+2]; + cur[q*4+1] = cur[q*3+1]; + cur[q*4+0] = cur[q*3+0]; + } + } + } + } + } else if (depth == 16) { + // force the image data from big-endian to platform-native. + // this is done in a separate pass due to the decoding relying + // on the data being untouched, but could probably be done + // per-line during decode if care is taken. + stbi_uc *cur = a->out; + stbi__uint16 *cur16 = (stbi__uint16*)cur; + + for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) { + *cur16 = (cur[0] << 8) | cur[1]; + } + } + + return 1; +} + +static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) +{ + stbi_uc *final; + int p; + if (!interlaced) + return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); + + // de-interlacing + final = (stbi_uc *) stbi__malloc(a->s->img_x * a->s->img_y * out_n); + for (p=0; p < 7; ++p) { + int xorig[] = { 0,4,0,2,0,1,0 }; + int yorig[] = { 0,0,4,0,2,0,1 }; + int xspc[] = { 8,8,4,4,2,2,1 }; + int yspc[] = { 8,8,8,4,4,2,2 }; + int i,j,x,y; + // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 + x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; + y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; + if (x && y) { + stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; + if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { + STBI_FREE(final); + return 0; + } + for (j=0; j < y; ++j) { + for (i=0; i < x; ++i) { + int out_y = j*yspc[p]+yorig[p]; + int out_x = i*xspc[p]+xorig[p]; + memcpy(final + out_y*a->s->img_x*out_n + out_x*out_n, + a->out + (j*x+i)*out_n, out_n); + } + } + STBI_FREE(a->out); + image_data += img_len; + image_data_len -= img_len; + } + } + a->out = final; + + return 1; +} + +static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + // compute color-based transparency, assuming we've + // already got 255 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i=0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 255); + p += 2; + } + } else { + for (i=0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi__uint16 *p = (stbi__uint16*) z->out; + + // compute color-based transparency, assuming we've + // already got 65535 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i = 0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 65535); + p += 2; + } + } else { + for (i = 0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) +{ + stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + stbi_uc *p, *temp_out, *orig = a->out; + + p = (stbi_uc *) stbi__malloc(pixel_count * pal_img_n); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + + // between here and free(out) below, exitting would leak + temp_out = p; + + if (pal_img_n == 3) { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p += 3; + } + } else { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p[3] = palette[n+3]; + p += 4; + } + } + STBI_FREE(a->out); + a->out = temp_out; + + STBI_NOTUSED(len); + + return 1; +} + +static int stbi__reduce_png(stbi__png *p) +{ + int i; + int img_len = p->s->img_x * p->s->img_y * p->s->img_out_n; + stbi_uc *reduced; + stbi__uint16 *orig = (stbi__uint16*)p->out; + + if (p->depth != 16) return 1; // don't need to do anything if not 16-bit data + + reduced = (stbi_uc *)stbi__malloc(img_len); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) reduced[i] = (stbi_uc)((orig[i] >> 8) & 0xFF); // top half of each byte is a decent approx of 16->8 bit scaling + + p->out = reduced; + STBI_FREE(orig); + + return 1; +} + +static int stbi__unpremultiply_on_load = 0; +static int stbi__de_iphone_flag = 0; + +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) +{ + stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) +{ + stbi__de_iphone_flag = flag_true_if_should_convert; +} + +static void stbi__de_iphone(stbi__png *z) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + if (s->img_out_n == 3) { // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 3; + } + } else { + STBI_ASSERT(s->img_out_n == 4); + if (stbi__unpremultiply_on_load) { + // convert bgr to rgb and unpremultiply + for (i=0; i < pixel_count; ++i) { + stbi_uc a = p[3]; + stbi_uc t = p[0]; + if (a) { + p[0] = p[2] * 255 / a; + p[1] = p[1] * 255 / a; + p[2] = t * 255 / a; + } else { + p[0] = p[2]; + p[2] = t; + } + p += 4; + } + } else { + // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 4; + } + } + } +} + +#define STBI__PNG_TYPE(a,b,c,d) (((a) << 24) + ((b) << 16) + ((c) << 8) + (d)) + +static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) +{ + stbi_uc palette[1024], pal_img_n=0; + stbi_uc has_trans=0, tc[3]; + stbi__uint16 tc16[3]; + stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; + int first=1,k,interlace=0, color=0, is_iphone=0; + stbi__context *s = z->s; + + z->expanded = NULL; + z->idata = NULL; + z->out = NULL; + + if (!stbi__check_png_header(s)) return 0; + + if (scan == STBI__SCAN_type) return 1; + + for (;;) { + stbi__pngchunk c = stbi__get_chunk_header(s); + switch (c.type) { + case STBI__PNG_TYPE('C','g','B','I'): + is_iphone = 1; + stbi__skip(s, c.length); + break; + case STBI__PNG_TYPE('I','H','D','R'): { + int comp,filter; + if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); + first = 0; + if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); + s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); + s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); + z->depth = stbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return stbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); + color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3 && z->depth == 16) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); + comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); + filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); + interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); + if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); + if (!pal_img_n) { + s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + if (scan == STBI__SCAN_header) return 1; + } else { + // if paletted, then pal_n is our final components, and + // img_n is # components to decompress/filter. + s->img_n = 1; + if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); + // if SCAN_header, have to scan to see if we have a tRNS + } + break; + } + + case STBI__PNG_TYPE('P','L','T','E'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); + pal_len = c.length / 3; + if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); + for (i=0; i < pal_len; ++i) { + palette[i*4+0] = stbi__get8(s); + palette[i*4+1] = stbi__get8(s); + palette[i*4+2] = stbi__get8(s); + palette[i*4+3] = 255; + } + break; + } + + case STBI__PNG_TYPE('t','R','N','S'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); + if (pal_img_n) { + if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } + if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); + if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); + pal_img_n = 4; + for (i=0; i < c.length; ++i) + palette[i*4+3] = stbi__get8(s); + } else { + if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); + if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); + has_trans = 1; + if (z->depth == 16) { + for (k = 0; k < s->img_n; ++k) tc16[k] = stbi__get16be(s); // copy the values as-is + } else { + for (k = 0; k < s->img_n; ++k) tc[k] = (stbi_uc)(stbi__get16be(s) & 255) * stbi__depth_scale_table[z->depth]; // non 8-bit images will be larger + } + } + break; + } + + case STBI__PNG_TYPE('I','D','A','T'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); + if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } + if ((int)(ioff + c.length) < (int)ioff) return 0; + if (ioff + c.length > idata_limit) { + stbi__uint32 idata_limit_old = idata_limit; + stbi_uc *p; + if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; + while (ioff + c.length > idata_limit) + idata_limit *= 2; + STBI_NOTUSED(idata_limit_old); + p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); + z->idata = p; + } + if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); + ioff += c.length; + break; + } + + case STBI__PNG_TYPE('I','E','N','D'): { + stbi__uint32 raw_len, bpl; + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (scan != STBI__SCAN_load) return 1; + if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); + // initial guess for decoded data size to avoid unnecessary reallocs + bpl = (s->img_x * z->depth + 7) / 8; // bytes per line, per component + raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; + z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); + if (z->expanded == NULL) return 0; // zlib should set error + STBI_FREE(z->idata); z->idata = NULL; + if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) + s->img_out_n = s->img_n+1; + else + s->img_out_n = s->img_n; + if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; + if (has_trans) { + if (z->depth == 16) { + if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; + } else { + if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; + } + } + if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) + stbi__de_iphone(z); + if (pal_img_n) { + // pal_img_n == 3 or 4 + s->img_n = pal_img_n; // record the actual colors we had + s->img_out_n = pal_img_n; + if (req_comp >= 3) s->img_out_n = req_comp; + if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + return 0; + } + STBI_FREE(z->expanded); z->expanded = NULL; + return 1; + } + + default: + // if critical, fail + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if ((c.type & (1 << 29)) == 0) { + #ifndef STBI_NO_FAILURE_STRINGS + // not threadsafe + static char invalid_chunk[] = "XXXX PNG chunk not known"; + invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); + invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); + invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); + invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); + #endif + return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); + } + stbi__skip(s, c.length); + break; + } + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + } +} + +static unsigned char *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp) +{ + unsigned char *result=NULL; + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { + if (p->depth == 16) { + if (!stbi__reduce_png(p)) { + return result; + } + } + result = p->out; + p->out = NULL; + if (req_comp && req_comp != p->s->img_out_n) { + result = stbi__convert_format(result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + p->s->img_out_n = req_comp; + if (result == NULL) return result; + } + *x = p->s->img_x; + *y = p->s->img_y; + if (n) *n = p->s->img_n; + } + STBI_FREE(p->out); p->out = NULL; + STBI_FREE(p->expanded); p->expanded = NULL; + STBI_FREE(p->idata); p->idata = NULL; + + return result; +} + +static unsigned char *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__png p; + p.s = s; + return stbi__do_png(&p, x,y,comp,req_comp); +} + +static int stbi__png_test(stbi__context *s) +{ + int r; + r = stbi__check_png_header(s); + stbi__rewind(s); + return r; +} + +static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) +{ + if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { + stbi__rewind( p->s ); + return 0; + } + if (x) *x = p->s->img_x; + if (y) *y = p->s->img_y; + if (comp) *comp = p->s->img_n; + return 1; +} + +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__png p; + p.s = s; + return stbi__png_info_raw(&p, x, y, comp); +} +#endif + +// Microsoft/Windows BMP image + +#ifndef STBI_NO_BMP +static int stbi__bmp_test_raw(stbi__context *s) +{ + int r; + int sz; + if (stbi__get8(s) != 'B') return 0; + if (stbi__get8(s) != 'M') return 0; + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + stbi__get32le(s); // discard data offset + sz = stbi__get32le(s); + r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); + return r; +} + +static int stbi__bmp_test(stbi__context *s) +{ + int r = stbi__bmp_test_raw(s); + stbi__rewind(s); + return r; +} + + +// returns 0..31 for the highest set bit +static int stbi__high_bit(unsigned int z) +{ + int n=0; + if (z == 0) return -1; + if (z >= 0x10000) n += 16, z >>= 16; + if (z >= 0x00100) n += 8, z >>= 8; + if (z >= 0x00010) n += 4, z >>= 4; + if (z >= 0x00004) n += 2, z >>= 2; + if (z >= 0x00002) n += 1, z >>= 1; + return n; +} + +static int stbi__bitcount(unsigned int a) +{ + a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 + a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 + a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits + a = (a + (a >> 8)); // max 16 per 8 bits + a = (a + (a >> 16)); // max 32 per 8 bits + return a & 0xff; +} + +static int stbi__shiftsigned(int v, int shift, int bits) +{ + int result; + int z=0; + + if (shift < 0) v <<= -shift; + else v >>= shift; + result = v; + + z = bits; + while (z < 8) { + result += v >> z; + z += bits; + } + return result; +} + +typedef struct +{ + int bpp, offset, hsz; + unsigned int mr,mg,mb,ma, all_a; +} stbi__bmp_data; + +static void *stbi__bmp_parse_header(stbi__context *s, stbi__bmp_data *info) +{ + int hsz; + if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + info->offset = stbi__get32le(s); + info->hsz = hsz = stbi__get32le(s); + info->mr = info->mg = info->mb = info->ma = 0; + + if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); + if (hsz == 12) { + s->img_x = stbi__get16le(s); + s->img_y = stbi__get16le(s); + } else { + s->img_x = stbi__get32le(s); + s->img_y = stbi__get32le(s); + } + if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); + info->bpp = stbi__get16le(s); + if (info->bpp == 1) return stbi__errpuc("monochrome", "BMP type not supported: 1-bit"); + if (hsz != 12) { + int compress = stbi__get32le(s); + if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); + stbi__get32le(s); // discard sizeof + stbi__get32le(s); // discard hres + stbi__get32le(s); // discard vres + stbi__get32le(s); // discard colorsused + stbi__get32le(s); // discard max important + if (hsz == 40 || hsz == 56) { + if (hsz == 56) { + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + } + if (info->bpp == 16 || info->bpp == 32) { + if (compress == 0) { + if (info->bpp == 32) { + info->mr = 0xffu << 16; + info->mg = 0xffu << 8; + info->mb = 0xffu << 0; + info->ma = 0xffu << 24; + info->all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 + } else { + info->mr = 31u << 10; + info->mg = 31u << 5; + info->mb = 31u << 0; + } + } else if (compress == 3) { + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + // not documented, but generated by photoshop and handled by mspaint + if (info->mr == info->mg && info->mg == info->mb) { + // ?!?!? + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else { + int i; + if (hsz != 108 && hsz != 124) + return stbi__errpuc("bad BMP", "bad BMP"); + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->ma = stbi__get32le(s); + stbi__get32le(s); // discard color space + for (i=0; i < 12; ++i) + stbi__get32le(s); // discard color space parameters + if (hsz == 124) { + stbi__get32le(s); // discard rendering intent + stbi__get32le(s); // discard offset of profile data + stbi__get32le(s); // discard size of profile data + stbi__get32le(s); // discard reserved + } + } + } + return (void *) 1; +} + + +static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi_uc *out; + unsigned int mr=0,mg=0,mb=0,ma=0, all_a; + stbi_uc pal[256][4]; + int psize=0,i,j,width; + int flip_vertically, pad, target; + stbi__bmp_data info; + + info.all_a = 255; + if (stbi__bmp_parse_header(s, &info) == NULL) + return NULL; // error code already set + + flip_vertically = ((int) s->img_y) > 0; + s->img_y = abs((int) s->img_y); + + mr = info.mr; + mg = info.mg; + mb = info.mb; + ma = info.ma; + all_a = info.all_a; + + if (info.hsz == 12) { + if (info.bpp < 24) + psize = (info.offset - 14 - 24) / 3; + } else { + if (info.bpp < 16) + psize = (info.offset - 14 - info.hsz) >> 2; + } + + s->img_n = ma ? 4 : 3; + if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 + target = req_comp; + else + target = s->img_n; // if they want monochrome, we'll post-convert + + out = (stbi_uc *) stbi__malloc(target * s->img_x * s->img_y); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (info.bpp < 16) { + int z=0; + if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } + for (i=0; i < psize; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + if (info.hsz != 12) stbi__get8(s); + pal[i][3] = 255; + } + stbi__skip(s, info.offset - 14 - info.hsz - psize * (info.hsz == 12 ? 3 : 4)); + if (info.bpp == 4) width = (s->img_x + 1) >> 1; + else if (info.bpp == 8) width = s->img_x; + else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } + pad = (-width)&3; + for (j=0; j < (int) s->img_y; ++j) { + for (i=0; i < (int) s->img_x; i += 2) { + int v=stbi__get8(s),v2=0; + if (info.bpp == 4) { + v2 = v & 15; + v >>= 4; + } + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + v = (info.bpp == 8) ? stbi__get8(s) : v2; + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + } + stbi__skip(s, pad); + } + } else { + int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; + int z = 0; + int easy=0; + stbi__skip(s, info.offset - 14 - info.hsz); + if (info.bpp == 24) width = 3 * s->img_x; + else if (info.bpp == 16) width = 2*s->img_x; + else /* bpp = 32 and pad = 0 */ width=0; + pad = (-width) & 3; + if (info.bpp == 24) { + easy = 1; + } else if (info.bpp == 32) { + if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) + easy = 2; + } + if (!easy) { + if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + // right shift amt to put high bit in position #7 + rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); + gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); + bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); + ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); + } + for (j=0; j < (int) s->img_y; ++j) { + if (easy) { + for (i=0; i < (int) s->img_x; ++i) { + unsigned char a; + out[z+2] = stbi__get8(s); + out[z+1] = stbi__get8(s); + out[z+0] = stbi__get8(s); + z += 3; + a = (easy == 2 ? stbi__get8(s) : 255); + all_a |= a; + if (target == 4) out[z++] = a; + } + } else { + int bpp = info.bpp; + for (i=0; i < (int) s->img_x; ++i) { + stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); + int a; + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); + a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); + all_a |= a; + if (target == 4) out[z++] = STBI__BYTECAST(a); + } + } + stbi__skip(s, pad); + } + } + + // if alpha channel is all 0s, replace with all 255s + if (target == 4 && all_a == 0) + for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) + out[i] = 255; + + if (flip_vertically) { + stbi_uc t; + for (j=0; j < (int) s->img_y>>1; ++j) { + stbi_uc *p1 = out + j *s->img_x*target; + stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; + for (i=0; i < (int) s->img_x*target; ++i) { + t = p1[i], p1[i] = p2[i], p2[i] = t; + } + } + } + + if (req_comp && req_comp != target) { + out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + return out; +} +#endif + +// Targa Truevision - TGA +// by Jonathan Dummer +#ifndef STBI_NO_TGA +// returns STBI_rgb or whatever, 0 on error +static int stbi__tga_get_comp(int bits_per_pixel, int is_grey, int* is_rgb16) +{ + // only RGB or RGBA (incl. 16bit) or grey allowed + if(is_rgb16) *is_rgb16 = 0; + switch(bits_per_pixel) { + case 8: return STBI_grey; + case 16: if(is_grey) return STBI_grey_alpha; + // else: fall-through + case 15: if(is_rgb16) *is_rgb16 = 1; + return STBI_rgb; + case 24: // fall-through + case 32: return bits_per_pixel/8; + default: return 0; + } +} + +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) +{ + int tga_w, tga_h, tga_comp, tga_image_type, tga_bits_per_pixel, tga_colormap_bpp; + int sz, tga_colormap_type; + stbi__get8(s); // discard Offset + tga_colormap_type = stbi__get8(s); // colormap type + if( tga_colormap_type > 1 ) { + stbi__rewind(s); + return 0; // only RGB or indexed allowed + } + tga_image_type = stbi__get8(s); // image type + if ( tga_colormap_type == 1 ) { // colormapped (paletted) image + if (tga_image_type != 1 && tga_image_type != 9) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip image x and y origin + tga_colormap_bpp = sz; + } else { // "normal" image w/o colormap - only RGB or grey allowed, +/- RLE + if ( (tga_image_type != 2) && (tga_image_type != 3) && (tga_image_type != 10) && (tga_image_type != 11) ) { + stbi__rewind(s); + return 0; // only RGB or grey allowed, +/- RLE + } + stbi__skip(s,9); // skip colormap specification and image x/y origin + tga_colormap_bpp = 0; + } + tga_w = stbi__get16le(s); + if( tga_w < 1 ) { + stbi__rewind(s); + return 0; // test width + } + tga_h = stbi__get16le(s); + if( tga_h < 1 ) { + stbi__rewind(s); + return 0; // test height + } + tga_bits_per_pixel = stbi__get8(s); // bits per pixel + stbi__get8(s); // ignore alpha bits + if (tga_colormap_bpp != 0) { + if((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16)) { + // when using a colormap, tga_bits_per_pixel is the size of the indexes + // I don't think anything but 8 or 16bit indexes makes sense + stbi__rewind(s); + return 0; + } + tga_comp = stbi__tga_get_comp(tga_colormap_bpp, 0, NULL); + } else { + tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3) || (tga_image_type == 11), NULL); + } + if(!tga_comp) { + stbi__rewind(s); + return 0; + } + if (x) *x = tga_w; + if (y) *y = tga_h; + if (comp) *comp = tga_comp; + return 1; // seems to have passed everything +} + +static int stbi__tga_test(stbi__context *s) +{ + int res = 0; + int sz, tga_color_type; + stbi__get8(s); // discard Offset + tga_color_type = stbi__get8(s); // color type + if ( tga_color_type > 1 ) goto errorEnd; // only RGB or indexed allowed + sz = stbi__get8(s); // image type + if ( tga_color_type == 1 ) { // colormapped (paletted) image + if (sz != 1 && sz != 9) goto errorEnd; // colortype 1 demands image type 1 or 9 + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + stbi__skip(s,4); // skip image x and y origin + } else { // "normal" image w/o colormap + if ( (sz != 2) && (sz != 3) && (sz != 10) && (sz != 11) ) goto errorEnd; // only RGB or grey allowed, +/- RLE + stbi__skip(s,9); // skip colormap specification and image x/y origin + } + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test width + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test height + sz = stbi__get8(s); // bits per pixel + if ( (tga_color_type == 1) && (sz != 8) && (sz != 16) ) goto errorEnd; // for colormapped images, bpp is size of an index + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + + res = 1; // if we got this far, everything's good and we can return 1 instead of 0 + +errorEnd: + stbi__rewind(s); + return res; +} + +// read 16bit value and convert to 24bit RGB +void stbi__tga_read_rgb16(stbi__context *s, stbi_uc* out) +{ + stbi__uint16 px = stbi__get16le(s); + stbi__uint16 fiveBitMask = 31; + // we have 3 channels with 5bits each + int r = (px >> 10) & fiveBitMask; + int g = (px >> 5) & fiveBitMask; + int b = px & fiveBitMask; + // Note that this saves the data in RGB(A) order, so it doesn't need to be swapped later + out[0] = (r * 255)/31; + out[1] = (g * 255)/31; + out[2] = (b * 255)/31; + + // some people claim that the most significant bit might be used for alpha + // (possibly if an alpha-bit is set in the "image descriptor byte") + // but that only made 16bit test images completely translucent.. + // so let's treat all 15 and 16bit TGAs as RGB with no alpha. +} + +static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + // read in the TGA header stuff + int tga_offset = stbi__get8(s); + int tga_indexed = stbi__get8(s); + int tga_image_type = stbi__get8(s); + int tga_is_RLE = 0; + int tga_palette_start = stbi__get16le(s); + int tga_palette_len = stbi__get16le(s); + int tga_palette_bits = stbi__get8(s); + int tga_x_origin = stbi__get16le(s); + int tga_y_origin = stbi__get16le(s); + int tga_width = stbi__get16le(s); + int tga_height = stbi__get16le(s); + int tga_bits_per_pixel = stbi__get8(s); + int tga_comp, tga_rgb16=0; + int tga_inverted = stbi__get8(s); + // int tga_alpha_bits = tga_inverted & 15; // the 4 lowest bits - unused (useless?) + // image data + unsigned char *tga_data; + unsigned char *tga_palette = NULL; + int i, j; + unsigned char raw_data[4]; + int RLE_count = 0; + int RLE_repeating = 0; + int read_next_pixel = 1; + + // do a tiny bit of precessing + if ( tga_image_type >= 8 ) + { + tga_image_type -= 8; + tga_is_RLE = 1; + } + tga_inverted = 1 - ((tga_inverted >> 5) & 1); + + // If I'm paletted, then I'll use the number of bits from the palette + if ( tga_indexed ) tga_comp = stbi__tga_get_comp(tga_palette_bits, 0, &tga_rgb16); + else tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3), &tga_rgb16); + + if(!tga_comp) // shouldn't really happen, stbi__tga_test() should have ensured basic consistency + return stbi__errpuc("bad format", "Can't find out TGA pixelformat"); + + // tga info + *x = tga_width; + *y = tga_height; + if (comp) *comp = tga_comp; + + tga_data = (unsigned char*)stbi__malloc( (size_t)tga_width * tga_height * tga_comp ); + if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); + + // skip to the data's starting position (offset usually = 0) + stbi__skip(s, tga_offset ); + + if ( !tga_indexed && !tga_is_RLE && !tga_rgb16 ) { + for (i=0; i < tga_height; ++i) { + int row = tga_inverted ? tga_height -i - 1 : i; + stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; + stbi__getn(s, tga_row, tga_width * tga_comp); + } + } else { + // do I need to load a palette? + if ( tga_indexed) + { + // any data to skip? (offset usually = 0) + stbi__skip(s, tga_palette_start ); + // load the palette + tga_palette = (unsigned char*)stbi__malloc( tga_palette_len * tga_comp ); + if (!tga_palette) { + STBI_FREE(tga_data); + return stbi__errpuc("outofmem", "Out of memory"); + } + if (tga_rgb16) { + stbi_uc *pal_entry = tga_palette; + STBI_ASSERT(tga_comp == STBI_rgb); + for (i=0; i < tga_palette_len; ++i) { + stbi__tga_read_rgb16(s, pal_entry); + pal_entry += tga_comp; + } + } else if (!stbi__getn(s, tga_palette, tga_palette_len * tga_comp)) { + STBI_FREE(tga_data); + STBI_FREE(tga_palette); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + } + // load the data + for (i=0; i < tga_width * tga_height; ++i) + { + // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? + if ( tga_is_RLE ) + { + if ( RLE_count == 0 ) + { + // yep, get the next byte as a RLE command + int RLE_cmd = stbi__get8(s); + RLE_count = 1 + (RLE_cmd & 127); + RLE_repeating = RLE_cmd >> 7; + read_next_pixel = 1; + } else if ( !RLE_repeating ) + { + read_next_pixel = 1; + } + } else + { + read_next_pixel = 1; + } + // OK, if I need to read a pixel, do it now + if ( read_next_pixel ) + { + // load however much data we did have + if ( tga_indexed ) + { + // read in index, then perform the lookup + int pal_idx = (tga_bits_per_pixel == 8) ? stbi__get8(s) : stbi__get16le(s); + if ( pal_idx >= tga_palette_len ) { + // invalid index + pal_idx = 0; + } + pal_idx *= tga_comp; + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = tga_palette[pal_idx+j]; + } + } else if(tga_rgb16) { + STBI_ASSERT(tga_comp == STBI_rgb); + stbi__tga_read_rgb16(s, raw_data); + } else { + // read in the data raw + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = stbi__get8(s); + } + } + // clear the reading flag for the next pixel + read_next_pixel = 0; + } // end of reading a pixel + + // copy data + for (j = 0; j < tga_comp; ++j) + tga_data[i*tga_comp+j] = raw_data[j]; + + // in case we're in RLE mode, keep counting down + --RLE_count; + } + // do I need to invert the image? + if ( tga_inverted ) + { + for (j = 0; j*2 < tga_height; ++j) + { + int index1 = j * tga_width * tga_comp; + int index2 = (tga_height - 1 - j) * tga_width * tga_comp; + for (i = tga_width * tga_comp; i > 0; --i) + { + unsigned char temp = tga_data[index1]; + tga_data[index1] = tga_data[index2]; + tga_data[index2] = temp; + ++index1; + ++index2; + } + } + } + // clear my palette, if I had one + if ( tga_palette != NULL ) + { + STBI_FREE( tga_palette ); + } + } + + // swap RGB - if the source data was RGB16, it already is in the right order + if (tga_comp >= 3 && !tga_rgb16) + { + unsigned char* tga_pixel = tga_data; + for (i=0; i < tga_width * tga_height; ++i) + { + unsigned char temp = tga_pixel[0]; + tga_pixel[0] = tga_pixel[2]; + tga_pixel[2] = temp; + tga_pixel += tga_comp; + } + } + + // convert to target component count + if (req_comp && req_comp != tga_comp) + tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); + + // the things I do to get rid of an error message, and yet keep + // Microsoft's C compilers happy... [8^( + tga_palette_start = tga_palette_len = tga_palette_bits = + tga_x_origin = tga_y_origin = 0; + // OK, done + return tga_data; +} +#endif + +// ************************************************************************************************* +// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s) +{ + int r = (stbi__get32be(s) == 0x38425053); + stbi__rewind(s); + return r; +} + +static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + int pixelCount; + int channelCount, compression; + int channel, i, count, len; + int bitdepth; + int w,h; + stbi_uc *out; + + // Check identifier + if (stbi__get32be(s) != 0x38425053) // "8BPS" + return stbi__errpuc("not PSD", "Corrupt PSD image"); + + // Check file type version. + if (stbi__get16be(s) != 1) + return stbi__errpuc("wrong version", "Unsupported version of PSD image"); + + // Skip 6 reserved bytes. + stbi__skip(s, 6 ); + + // Read the number of channels (R, G, B, A, etc). + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) + return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); + + // Read the rows and columns of the image. + h = stbi__get32be(s); + w = stbi__get32be(s); + + // Make sure the depth is 8 bits. + bitdepth = stbi__get16be(s); + if (bitdepth != 8 && bitdepth != 16) + return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); + + // Make sure the color mode is RGB. + // Valid options are: + // 0: Bitmap + // 1: Grayscale + // 2: Indexed color + // 3: RGB color + // 4: CMYK color + // 7: Multichannel + // 8: Duotone + // 9: Lab color + if (stbi__get16be(s) != 3) + return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); + + // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) + stbi__skip(s,stbi__get32be(s) ); + + // Skip the image resources. (resolution, pen tool paths, etc) + stbi__skip(s, stbi__get32be(s) ); + + // Skip the reserved data. + stbi__skip(s, stbi__get32be(s) ); + + // Find out if the data is compressed. + // Known values: + // 0: no compression + // 1: RLE compressed + compression = stbi__get16be(s); + if (compression > 1) + return stbi__errpuc("bad compression", "PSD has an unknown compression format"); + + // Create the destination image. + out = (stbi_uc *) stbi__malloc(4 * w*h); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + pixelCount = w*h; + + // Initialize the data to zero. + //memset( out, 0, pixelCount * 4 ); + + // Finally, the image data. + if (compression) { + // RLE as used by .PSD and .TIFF + // Loop until you get the number of unpacked bytes you are expecting: + // Read the next source byte into n. + // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. + // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. + // Else if n is 128, noop. + // Endloop + + // The RLE-compressed data is preceeded by a 2-byte data count for each row in the data, + // which we're going to just skip. + stbi__skip(s, h * channelCount * 2 ); + + // Read the RLE data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out+channel; + if (channel >= channelCount) { + // Fill this channel with default data. + for (i = 0; i < pixelCount; i++, p += 4) + *p = (channel == 3 ? 255 : 0); + } else { + // Read the RLE data. + count = 0; + while (count < pixelCount) { + len = stbi__get8(s); + if (len == 128) { + // No-op. + } else if (len < 128) { + // Copy next len+1 bytes literally. + len++; + count += len; + while (len) { + *p = stbi__get8(s); + p += 4; + len--; + } + } else if (len > 128) { + stbi_uc val; + // Next -len+1 bytes in the dest are replicated from next source byte. + // (Interpret len as a negative 8-bit int.) + len ^= 0x0FF; + len += 2; + val = stbi__get8(s); + count += len; + while (len) { + *p = val; + p += 4; + len--; + } + } + } + } + } + + } else { + // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) + // where each channel consists of an 8-bit value for each pixel in the image. + + // Read the data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out + channel; + if (channel >= channelCount) { + // Fill this channel with default data. + stbi_uc val = channel == 3 ? 255 : 0; + for (i = 0; i < pixelCount; i++, p += 4) + *p = val; + } else { + // Read the data. + if (bitdepth == 16) { + for (i = 0; i < pixelCount; i++, p += 4) + *p = (stbi_uc) (stbi__get16be(s) >> 8); + } else { + for (i = 0; i < pixelCount; i++, p += 4) + *p = stbi__get8(s); + } + } + } + } + + if (channelCount >= 4) { + for (i=0; i < w*h; ++i) { + unsigned char *pixel = out + 4*i; + if (pixel[3] != 0 && pixel[3] != 255) { + // remove weird white matte from PSD + float a = pixel[3] / 255.0f; + float ra = 1.0f / a; + float inv_a = 255.0f * (1 - ra); + pixel[0] = (unsigned char) (pixel[0]*ra + inv_a); + pixel[1] = (unsigned char) (pixel[1]*ra + inv_a); + pixel[2] = (unsigned char) (pixel[2]*ra + inv_a); + } + } + } + + if (req_comp && req_comp != 4) { + out = stbi__convert_format(out, 4, req_comp, w, h); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + if (comp) *comp = 4; + *y = h; + *x = w; + + return out; +} +#endif + +// ************************************************************************************************* +// Softimage PIC loader +// by Tom Seddon +// +// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format +// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ + +#ifndef STBI_NO_PIC +static int stbi__pic_is4(stbi__context *s,const char *str) +{ + int i; + for (i=0; i<4; ++i) + if (stbi__get8(s) != (stbi_uc)str[i]) + return 0; + + return 1; +} + +static int stbi__pic_test_core(stbi__context *s) +{ + int i; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) + return 0; + + for(i=0;i<84;++i) + stbi__get8(s); + + if (!stbi__pic_is4(s,"PICT")) + return 0; + + return 1; +} + +typedef struct +{ + stbi_uc size,type,channel; +} stbi__pic_packet; + +static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) +{ + int mask=0x80, i; + + for (i=0; i<4; ++i, mask>>=1) { + if (channel & mask) { + if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); + dest[i]=stbi__get8(s); + } + } + + return dest; +} + +static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) +{ + int mask=0x80,i; + + for (i=0;i<4; ++i, mask>>=1) + if (channel&mask) + dest[i]=src[i]; +} + +static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) +{ + int act_comp=0,num_packets=0,y,chained; + stbi__pic_packet packets[10]; + + // this will (should...) cater for even some bizarre stuff like having data + // for the same channel in multiple packets. + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return stbi__errpuc("bad format","too many packets"); + + packet = &packets[num_packets++]; + + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + + act_comp |= packet->channel; + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); + if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? + + for(y=0; ytype) { + default: + return stbi__errpuc("bad format","packet has bad compression type"); + + case 0: {//uncompressed + int x; + + for(x=0;xchannel,dest)) + return 0; + break; + } + + case 1://Pure RLE + { + int left=width, i; + + while (left>0) { + stbi_uc count,value[4]; + + count=stbi__get8(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); + + if (count > left) + count = (stbi_uc) left; + + if (!stbi__readval(s,packet->channel,value)) return 0; + + for(i=0; ichannel,dest,value); + left -= count; + } + } + break; + + case 2: {//Mixed RLE + int left=width; + while (left>0) { + int count = stbi__get8(s), i; + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); + + if (count >= 128) { // Repeated + stbi_uc value[4]; + + if (count==128) + count = stbi__get16be(s); + else + count -= 127; + if (count > left) + return stbi__errpuc("bad file","scanline overrun"); + + if (!stbi__readval(s,packet->channel,value)) + return 0; + + for(i=0;ichannel,dest,value); + } else { // Raw + ++count; + if (count>left) return stbi__errpuc("bad file","scanline overrun"); + + for(i=0;ichannel,dest)) + return 0; + } + left-=count; + } + break; + } + } + } + } + + return result; +} + +static stbi_uc *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp) +{ + stbi_uc *result; + int i, x,y; + + for (i=0; i<92; ++i) + stbi__get8(s); + + x = stbi__get16be(s); + y = stbi__get16be(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); + if ((1 << 28) / x < y) return stbi__errpuc("too large", "Image too large to decode"); + + stbi__get32be(s); //skip `ratio' + stbi__get16be(s); //skip `fields' + stbi__get16be(s); //skip `pad' + + // intermediate buffer is RGBA + result = (stbi_uc *) stbi__malloc(x*y*4); + memset(result, 0xff, x*y*4); + + if (!stbi__pic_load_core(s,x,y,comp, result)) { + STBI_FREE(result); + result=0; + } + *px = x; + *py = y; + if (req_comp == 0) req_comp = *comp; + result=stbi__convert_format(result,4,req_comp,x,y); + + return result; +} + +static int stbi__pic_test(stbi__context *s) +{ + int r = stbi__pic_test_core(s); + stbi__rewind(s); + return r; +} +#endif + +// ************************************************************************************************* +// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb + +#ifndef STBI_NO_GIF +typedef struct +{ + stbi__int16 prefix; + stbi_uc first; + stbi_uc suffix; +} stbi__gif_lzw; + +typedef struct +{ + int w,h; + stbi_uc *out, *old_out; // output buffer (always 4 components) + int flags, bgindex, ratio, transparent, eflags, delay; + stbi_uc pal[256][4]; + stbi_uc lpal[256][4]; + stbi__gif_lzw codes[4096]; + stbi_uc *color_table; + int parse, step; + int lflags; + int start_x, start_y; + int max_x, max_y; + int cur_x, cur_y; + int line_size; +} stbi__gif; + +static int stbi__gif_test_raw(stbi__context *s) +{ + int sz; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; + sz = stbi__get8(s); + if (sz != '9' && sz != '7') return 0; + if (stbi__get8(s) != 'a') return 0; + return 1; +} + +static int stbi__gif_test(stbi__context *s) +{ + int r = stbi__gif_test_raw(s); + stbi__rewind(s); + return r; +} + +static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) +{ + int i; + for (i=0; i < num_entries; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + pal[i][3] = transp == i ? 0 : 255; + } +} + +static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) +{ + stbi_uc version; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') + return stbi__err("not GIF", "Corrupt GIF"); + + version = stbi__get8(s); + if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); + if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); + + stbi__g_failure_reason = ""; + g->w = stbi__get16le(s); + g->h = stbi__get16le(s); + g->flags = stbi__get8(s); + g->bgindex = stbi__get8(s); + g->ratio = stbi__get8(s); + g->transparent = -1; + + if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments + + if (is_info) return 1; + + if (g->flags & 0x80) + stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); + + return 1; +} + +static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); + if (!stbi__gif_header(s, g, comp, 1)) { + STBI_FREE(g); + stbi__rewind( s ); + return 0; + } + if (x) *x = g->w; + if (y) *y = g->h; + STBI_FREE(g); + return 1; +} + +static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) +{ + stbi_uc *p, *c; + + // recurse to decode the prefixes, since the linked-list is backwards, + // and working backwards through an interleaved image would be nasty + if (g->codes[code].prefix >= 0) + stbi__out_gif_code(g, g->codes[code].prefix); + + if (g->cur_y >= g->max_y) return; + + p = &g->out[g->cur_x + g->cur_y]; + c = &g->color_table[g->codes[code].suffix * 4]; + + if (c[3] >= 128) { + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = c[3]; + } + g->cur_x += 4; + + if (g->cur_x >= g->max_x) { + g->cur_x = g->start_x; + g->cur_y += g->step; + + while (g->cur_y >= g->max_y && g->parse > 0) { + g->step = (1 << g->parse) * g->line_size; + g->cur_y = g->start_y + (g->step >> 1); + --g->parse; + } + } +} + +static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) +{ + stbi_uc lzw_cs; + stbi__int32 len, init_code; + stbi__uint32 first; + stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; + stbi__gif_lzw *p; + + lzw_cs = stbi__get8(s); + if (lzw_cs > 12) return NULL; + clear = 1 << lzw_cs; + first = 1; + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + bits = 0; + valid_bits = 0; + for (init_code = 0; init_code < clear; init_code++) { + g->codes[init_code].prefix = -1; + g->codes[init_code].first = (stbi_uc) init_code; + g->codes[init_code].suffix = (stbi_uc) init_code; + } + + // support no starting clear code + avail = clear+2; + oldcode = -1; + + len = 0; + for(;;) { + if (valid_bits < codesize) { + if (len == 0) { + len = stbi__get8(s); // start new block + if (len == 0) + return g->out; + } + --len; + bits |= (stbi__int32) stbi__get8(s) << valid_bits; + valid_bits += 8; + } else { + stbi__int32 code = bits & codemask; + bits >>= codesize; + valid_bits -= codesize; + // @OPTIMIZE: is there some way we can accelerate the non-clear path? + if (code == clear) { // clear code + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + avail = clear + 2; + oldcode = -1; + first = 0; + } else if (code == clear + 1) { // end of stream code + stbi__skip(s, len); + while ((len = stbi__get8(s)) > 0) + stbi__skip(s,len); + return g->out; + } else if (code <= avail) { + if (first) return stbi__errpuc("no clear code", "Corrupt GIF"); + + if (oldcode >= 0) { + p = &g->codes[avail++]; + if (avail > 4096) return stbi__errpuc("too many codes", "Corrupt GIF"); + p->prefix = (stbi__int16) oldcode; + p->first = g->codes[oldcode].first; + p->suffix = (code == avail) ? p->first : g->codes[code].first; + } else if (code == avail) + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + + stbi__out_gif_code(g, (stbi__uint16) code); + + if ((avail & codemask) == 0 && avail <= 0x0FFF) { + codesize++; + codemask = (1 << codesize) - 1; + } + + oldcode = code; + } else { + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + } + } + } +} + +static void stbi__fill_gif_background(stbi__gif *g, int x0, int y0, int x1, int y1) +{ + int x, y; + stbi_uc *c = g->pal[g->bgindex]; + for (y = y0; y < y1; y += 4 * g->w) { + for (x = x0; x < x1; x += 4) { + stbi_uc *p = &g->out[y + x]; + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = 0; + } + } +} + +// this function is designed to support animated gifs, although stb_image doesn't support it +static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp) +{ + int i; + stbi_uc *prev_out = 0; + + if (g->out == 0 && !stbi__gif_header(s, g, comp,0)) + return 0; // stbi__g_failure_reason set by stbi__gif_header + + prev_out = g->out; + g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h); + if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); + + switch ((g->eflags & 0x1C) >> 2) { + case 0: // unspecified (also always used on 1st frame) + stbi__fill_gif_background(g, 0, 0, 4 * g->w, 4 * g->w * g->h); + break; + case 1: // do not dispose + if (prev_out) memcpy(g->out, prev_out, 4 * g->w * g->h); + g->old_out = prev_out; + break; + case 2: // dispose to background + if (prev_out) memcpy(g->out, prev_out, 4 * g->w * g->h); + stbi__fill_gif_background(g, g->start_x, g->start_y, g->max_x, g->max_y); + break; + case 3: // dispose to previous + if (g->old_out) { + for (i = g->start_y; i < g->max_y; i += 4 * g->w) + memcpy(&g->out[i + g->start_x], &g->old_out[i + g->start_x], g->max_x - g->start_x); + } + break; + } + + for (;;) { + switch (stbi__get8(s)) { + case 0x2C: /* Image Descriptor */ + { + int prev_trans = -1; + stbi__int32 x, y, w, h; + stbi_uc *o; + + x = stbi__get16le(s); + y = stbi__get16le(s); + w = stbi__get16le(s); + h = stbi__get16le(s); + if (((x + w) > (g->w)) || ((y + h) > (g->h))) + return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); + + g->line_size = g->w * 4; + g->start_x = x * 4; + g->start_y = y * g->line_size; + g->max_x = g->start_x + w * 4; + g->max_y = g->start_y + h * g->line_size; + g->cur_x = g->start_x; + g->cur_y = g->start_y; + + g->lflags = stbi__get8(s); + + if (g->lflags & 0x40) { + g->step = 8 * g->line_size; // first interlaced spacing + g->parse = 3; + } else { + g->step = g->line_size; + g->parse = 0; + } + + if (g->lflags & 0x80) { + stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); + g->color_table = (stbi_uc *) g->lpal; + } else if (g->flags & 0x80) { + if (g->transparent >= 0 && (g->eflags & 0x01)) { + prev_trans = g->pal[g->transparent][3]; + g->pal[g->transparent][3] = 0; + } + g->color_table = (stbi_uc *) g->pal; + } else + return stbi__errpuc("missing color table", "Corrupt GIF"); + + o = stbi__process_gif_raster(s, g); + if (o == NULL) return NULL; + + if (prev_trans != -1) + g->pal[g->transparent][3] = (stbi_uc) prev_trans; + + return o; + } + + case 0x21: // Comment Extension. + { + int len; + if (stbi__get8(s) == 0xF9) { // Graphic Control Extension. + len = stbi__get8(s); + if (len == 4) { + g->eflags = stbi__get8(s); + g->delay = stbi__get16le(s); + g->transparent = stbi__get8(s); + } else { + stbi__skip(s, len); + break; + } + } + while ((len = stbi__get8(s)) != 0) + stbi__skip(s, len); + break; + } + + case 0x3B: // gif stream termination code + return (stbi_uc *) s; // using '1' causes warning on some compilers + + default: + return stbi__errpuc("unknown code", "Corrupt GIF"); + } + } + + STBI_NOTUSED(req_comp); +} + +static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi_uc *u = 0; + stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); + memset(g, 0, sizeof(*g)); + + u = stbi__gif_load_next(s, g, comp, req_comp); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + if (u) { + *x = g->w; + *y = g->h; + if (req_comp && req_comp != 4) + u = stbi__convert_format(u, 4, req_comp, g->w, g->h); + } + else if (g->out) + STBI_FREE(g->out); + STBI_FREE(g); + return u; +} + +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) +{ + return stbi__gif_info_raw(s,x,y,comp); +} +#endif + +// ************************************************************************************************* +// Radiance RGBE HDR loader +// originally by Nicolas Schulz +#ifndef STBI_NO_HDR +static int stbi__hdr_test_core(stbi__context *s) +{ + const char *signature = "#?RADIANCE\n"; + int i; + for (i=0; signature[i]; ++i) + if (stbi__get8(s) != signature[i]) + return 0; + return 1; +} + +static int stbi__hdr_test(stbi__context* s) +{ + int r = stbi__hdr_test_core(s); + stbi__rewind(s); + return r; +} + +#define STBI__HDR_BUFLEN 1024 +static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) +{ + int len=0; + char c = '\0'; + + c = (char) stbi__get8(z); + + while (!stbi__at_eof(z) && c != '\n') { + buffer[len++] = c; + if (len == STBI__HDR_BUFLEN-1) { + // flush to end of line + while (!stbi__at_eof(z) && stbi__get8(z) != '\n') + ; + break; + } + c = (char) stbi__get8(z); + } + + buffer[len] = 0; + return buffer; +} + +static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) +{ + if ( input[3] != 0 ) { + float f1; + // Exponent + f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); + if (req_comp <= 2) + output[0] = (input[0] + input[1] + input[2]) * f1 / 3; + else { + output[0] = input[0] * f1; + output[1] = input[1] * f1; + output[2] = input[2] * f1; + } + if (req_comp == 2) output[1] = 1; + if (req_comp == 4) output[3] = 1; + } else { + switch (req_comp) { + case 4: output[3] = 1; /* fallthrough */ + case 3: output[0] = output[1] = output[2] = 0; + break; + case 2: output[1] = 1; /* fallthrough */ + case 1: output[0] = 0; + break; + } + } +} + +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int width, height; + stbi_uc *scanline; + float *hdr_data; + int len; + unsigned char count, value; + int i, j, k, c1,c2, z; + + + // Check identifier + if (strcmp(stbi__hdr_gettoken(s,buffer), "#?RADIANCE") != 0) + return stbi__errpf("not HDR", "Corrupt HDR image"); + + // Parse header + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); + + // Parse width and height + // can't use sscanf() if we're not using stdio! + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + height = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + width = (int) strtol(token, NULL, 10); + + *x = width; + *y = height; + + if (comp) *comp = 3; + if (req_comp == 0) req_comp = 3; + + // Read data + hdr_data = (float *) stbi__malloc(height * width * req_comp * sizeof(float)); + + // Load image data + // image data is stored as some number of sca + if ( width < 8 || width >= 32768) { + // Read flat data + for (j=0; j < height; ++j) { + for (i=0; i < width; ++i) { + stbi_uc rgbe[4]; + main_decode_loop: + stbi__getn(s, rgbe, 4); + stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); + } + } + } else { + // Read RLE-encoded data + scanline = NULL; + + for (j = 0; j < height; ++j) { + c1 = stbi__get8(s); + c2 = stbi__get8(s); + len = stbi__get8(s); + if (c1 != 2 || c2 != 2 || (len & 0x80)) { + // not run-length encoded, so we have to actually use THIS data as a decoded + // pixel (note this can't be a valid pixel--one of RGB must be >= 128) + stbi_uc rgbe[4]; + rgbe[0] = (stbi_uc) c1; + rgbe[1] = (stbi_uc) c2; + rgbe[2] = (stbi_uc) len; + rgbe[3] = (stbi_uc) stbi__get8(s); + stbi__hdr_convert(hdr_data, rgbe, req_comp); + i = 1; + j = 0; + STBI_FREE(scanline); + goto main_decode_loop; // yes, this makes no sense + } + len <<= 8; + len |= stbi__get8(s); + if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } + if (scanline == NULL) scanline = (stbi_uc *) stbi__malloc(width * 4); + + for (k = 0; k < 4; ++k) { + i = 0; + while (i < width) { + count = stbi__get8(s); + if (count > 128) { + // Run + value = stbi__get8(s); + count -= 128; + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = value; + } else { + // Dump + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = stbi__get8(s); + } + } + } + for (i=0; i < width; ++i) + stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); + } + STBI_FREE(scanline); + } + + return hdr_data; +} + +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + + if (stbi__hdr_test(s) == 0) { + stbi__rewind( s ); + return 0; + } + + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) { + stbi__rewind( s ); + return 0; + } + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *y = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *x = (int) strtol(token, NULL, 10); + *comp = 3; + return 1; +} +#endif // STBI_NO_HDR + +#ifndef STBI_NO_BMP +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) +{ + void *p; + stbi__bmp_data info; + + info.all_a = 255; + p = stbi__bmp_parse_header(s, &info); + stbi__rewind( s ); + if (p == NULL) + return 0; + *x = s->img_x; + *y = s->img_y; + *comp = info.ma ? 4 : 3; + return 1; +} +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) +{ + int channelCount; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + *y = stbi__get32be(s); + *x = stbi__get32be(s); + if (stbi__get16be(s) != 8) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 3) { + stbi__rewind( s ); + return 0; + } + *comp = 4; + return 1; +} +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) +{ + int act_comp=0,num_packets=0,chained; + stbi__pic_packet packets[10]; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { + stbi__rewind(s); + return 0; + } + + stbi__skip(s, 88); + + *x = stbi__get16be(s); + *y = stbi__get16be(s); + if (stbi__at_eof(s)) { + stbi__rewind( s); + return 0; + } + if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { + stbi__rewind( s ); + return 0; + } + + stbi__skip(s, 8); + + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return 0; + + packet = &packets[num_packets++]; + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + act_comp |= packet->channel; + + if (stbi__at_eof(s)) { + stbi__rewind( s ); + return 0; + } + if (packet->size != 8) { + stbi__rewind( s ); + return 0; + } + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); + + return 1; +} +#endif + +// ************************************************************************************************* +// Portable Gray Map and Portable Pixel Map loader +// by Ken Miller +// +// PGM: http://netpbm.sourceforge.net/doc/pgm.html +// PPM: http://netpbm.sourceforge.net/doc/ppm.html +// +// Known limitations: +// Does not support comments in the header section +// Does not support ASCII image data (formats P2 and P3) +// Does not support 16-bit-per-channel + +#ifndef STBI_NO_PNM + +static int stbi__pnm_test(stbi__context *s) +{ + char p, t; + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind( s ); + return 0; + } + return 1; +} + +static stbi_uc *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi_uc *out; + if (!stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n)) + return 0; + *x = s->img_x; + *y = s->img_y; + *comp = s->img_n; + + out = (stbi_uc *) stbi__malloc(s->img_n * s->img_x * s->img_y); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + stbi__getn(s, out, s->img_n * s->img_x * s->img_y); + + if (req_comp && req_comp != s->img_n) { + out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + return out; +} + +static int stbi__pnm_isspace(char c) +{ + return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; +} + +static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) +{ + for (;;) { + while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) + *c = (char) stbi__get8(s); + + if (stbi__at_eof(s) || *c != '#') + break; + + while (!stbi__at_eof(s) && *c != '\n' && *c != '\r' ) + *c = (char) stbi__get8(s); + } +} + +static int stbi__pnm_isdigit(char c) +{ + return c >= '0' && c <= '9'; +} + +static int stbi__pnm_getinteger(stbi__context *s, char *c) +{ + int value = 0; + + while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { + value = value*10 + (*c - '0'); + *c = (char) stbi__get8(s); + } + + return value; +} + +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) +{ + int maxv; + char c, p, t; + + stbi__rewind( s ); + + // Get identifier + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind( s ); + return 0; + } + + *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm + + c = (char) stbi__get8(s); + stbi__pnm_skip_whitespace(s, &c); + + *x = stbi__pnm_getinteger(s, &c); // read width + stbi__pnm_skip_whitespace(s, &c); + + *y = stbi__pnm_getinteger(s, &c); // read height + stbi__pnm_skip_whitespace(s, &c); + + maxv = stbi__pnm_getinteger(s, &c); // read max value + + if (maxv > 255) + return stbi__err("max value > 255", "PPM image not 8-bit"); + else + return 1; +} +#endif + +static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) +{ + #ifndef STBI_NO_JPEG + if (stbi__jpeg_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNG + if (stbi__png_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_GIF + if (stbi__gif_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_BMP + if (stbi__bmp_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PSD + if (stbi__psd_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PIC + if (stbi__pic_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNM + if (stbi__pnm_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_info(s, x, y, comp)) return 1; + #endif + + // test tga last because it's a crappy test! + #ifndef STBI_NO_TGA + if (stbi__tga_info(s, x, y, comp)) + return 1; + #endif + return stbi__err("unknown image type", "Image not of any known type, or corrupt"); +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_info_from_file(f, x, y, comp); + fclose(f); + return result; +} + +STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__info_main(&s,x,y,comp); + fseek(f,pos,SEEK_SET); + return r; +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__info_main(&s,x,y,comp); +} + +#endif // STB_IMAGE_IMPLEMENTATION + +/* + revision history: + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) allocate large structures on the stack + remove white matting for transparent PSD + fix reported channel count for PNG & BMP + re-enable SSE2 in non-gcc 64-bit + support RGB-formatted JPEG + read 16-bit PNGs (only as 8-bit) + 2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED + 2.09 (2016-01-16) allow comments in PNM files + 16-bit-per-pixel TGA (not bit-per-component) + info() for TGA could break due to .hdr handling + info() for BMP to shares code instead of sloppy parse + can use STBI_REALLOC_SIZED if allocator doesn't support realloc + code cleanup + 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA + 2.07 (2015-09-13) fix compiler warnings + partial animated GIF support + limited 16-bpc PSD support + #ifdef unused functions + bug with < 92 byte PIC,PNM,HDR,TGA + 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value + 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning + 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit + 2.03 (2015-04-12) extra corruption checking (mmozeiko) + stbi_set_flip_vertically_on_load (nguillemot) + fix NEON support; fix mingw support + 2.02 (2015-01-19) fix incorrect assert, fix warning + 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 + 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG + 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) + progressive JPEG (stb) + PGM/PPM support (Ken Miller) + STBI_MALLOC,STBI_REALLOC,STBI_FREE + GIF bugfix -- seemingly never worked + STBI_NO_*, STBI_ONLY_* + 1.48 (2014-12-14) fix incorrectly-named assert() + 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) + optimize PNG (ryg) + fix bug in interlaced PNG with user-specified channel count (stb) + 1.46 (2014-08-26) + fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG + 1.45 (2014-08-16) + fix MSVC-ARM internal compiler error by wrapping malloc + 1.44 (2014-08-07) + various warning fixes from Ronny Chevalier + 1.43 (2014-07-15) + fix MSVC-only compiler problem in code changed in 1.42 + 1.42 (2014-07-09) + don't define _CRT_SECURE_NO_WARNINGS (affects user code) + fixes to stbi__cleanup_jpeg path + added STBI_ASSERT to avoid requiring assert.h + 1.41 (2014-06-25) + fix search&replace from 1.36 that messed up comments/error messages + 1.40 (2014-06-22) + fix gcc struct-initialization warning + 1.39 (2014-06-15) + fix to TGA optimization when req_comp != number of components in TGA; + fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) + add support for BMP version 5 (more ignored fields) + 1.38 (2014-06-06) + suppress MSVC warnings on integer casts truncating values + fix accidental rename of 'skip' field of I/O + 1.37 (2014-06-04) + remove duplicate typedef + 1.36 (2014-06-03) + convert to header file single-file library + if de-iphone isn't set, load iphone images color-swapped instead of returning NULL + 1.35 (2014-05-27) + various warnings + fix broken STBI_SIMD path + fix bug where stbi_load_from_file no longer left file pointer in correct place + fix broken non-easy path for 32-bit BMP (possibly never used) + TGA optimization by Arseny Kapoulkine + 1.34 (unknown) + use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case + 1.33 (2011-07-14) + make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements + 1.32 (2011-07-13) + support for "info" function for all supported filetypes (SpartanJ) + 1.31 (2011-06-20) + a few more leak fixes, bug in PNG handling (SpartanJ) + 1.30 (2011-06-11) + added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) + removed deprecated format-specific test/load functions + removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway + error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) + fix inefficiency in decoding 32-bit BMP (David Woo) + 1.29 (2010-08-16) + various warning fixes from Aurelien Pocheville + 1.28 (2010-08-01) + fix bug in GIF palette transparency (SpartanJ) + 1.27 (2010-08-01) + cast-to-stbi_uc to fix warnings + 1.26 (2010-07-24) + fix bug in file buffering for PNG reported by SpartanJ + 1.25 (2010-07-17) + refix trans_data warning (Won Chun) + 1.24 (2010-07-12) + perf improvements reading from files on platforms with lock-heavy fgetc() + minor perf improvements for jpeg + deprecated type-specific functions so we'll get feedback if they're needed + attempt to fix trans_data warning (Won Chun) + 1.23 fixed bug in iPhone support + 1.22 (2010-07-10) + removed image *writing* support + stbi_info support from Jetro Lauha + GIF support from Jean-Marc Lienher + iPhone PNG-extensions from James Brown + warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) + 1.21 fix use of 'stbi_uc' in header (reported by jon blow) + 1.20 added support for Softimage PIC, by Tom Seddon + 1.19 bug in interlaced PNG corruption check (found by ryg) + 1.18 (2008-08-02) + fix a threading bug (local mutable static) + 1.17 support interlaced PNG + 1.16 major bugfix - stbi__convert_format converted one too many pixels + 1.15 initialize some fields for thread safety + 1.14 fix threadsafe conversion bug + header-file-only version (#define STBI_HEADER_FILE_ONLY before including) + 1.13 threadsafe + 1.12 const qualifiers in the API + 1.11 Support installable IDCT, colorspace conversion routines + 1.10 Fixes for 64-bit (don't use "unsigned long") + optimized upsampling by Fabian "ryg" Giesen + 1.09 Fix format-conversion for PSD code (bad global variables!) + 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz + 1.07 attempt to fix C++ warning/errors again + 1.06 attempt to fix C++ warning/errors again + 1.05 fix TGA loading to return correct *comp and use good luminance calc + 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free + 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR + 1.02 support for (subset of) HDR files, float interface for preferred access to them + 1.01 fix bug: possible bug in handling right-side up bmps... not sure + fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all + 1.00 interface to zlib that skips zlib header + 0.99 correct handling of alpha in palette + 0.98 TGA loader by lonesock; dynamically add loaders (untested) + 0.97 jpeg errors on too large a file; also catch another malloc failure + 0.96 fix detection of invalid v value - particleman@mollyrocket forum + 0.95 during header scan, seek to markers in case of padding + 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same + 0.93 handle jpegtran output; verbose errors + 0.92 read 4,8,16,24,32-bit BMP files of several formats + 0.91 output 24-bit Windows 3.0 BMP files + 0.90 fix a few more warnings; bump version number to approach 1.0 + 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd + 0.60 fix compiling as c++ + 0.59 fix warnings: merge Dave Moore's -Wall fixes + 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian + 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available + 0.56 fix bug: zlib uncompressed mode len vs. nlen + 0.55 fix bug: restart_interval not initialized to 0 + 0.54 allow NULL for 'int *comp' + 0.53 fix bug in png 3->4; speedup png decoding + 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments + 0.51 obey req_comp requests, 1-component jpegs return as 1-component, + on 'test' only check type, not whether we support this variant + 0.50 (2006-11-19) + first released version +*/