diff options
Diffstat (limited to 'src/Gif.cpp')
| -rw-r--r-- | src/Gif.cpp | 219 |
1 files changed, 16 insertions, 203 deletions
diff --git a/src/Gif.cpp b/src/Gif.cpp index 6c18851..0015f50 100644 --- a/src/Gif.cpp +++ b/src/Gif.cpp @@ -1,216 +1,29 @@ #include "../include/Gif.hpp" -#include "../include/FileUtil.hpp" - -using namespace std; namespace dchat { - void* bitmapCreate(int width, int height) - { - return calloc(width * height, 4); - } - - void bitmapDestroy(void *bitmap) - { - free(bitmap); - } - - unsigned char* bitmapGetBuffer(void *bitmap) - { - return (unsigned char*)bitmap; - } - - void bitmapSetOpaque(void *bitmap, bool opaque) - { - - } - - bool bitmapTestOpaque(void *bitmap) - { - return false; - } - - void bitmapModified(void *bitmap) - { - - } - - const char* gifResultToString(gif_result code) - { - switch(code) - { - case GIF_INSUFFICIENT_FRAME_DATA: - return "GIF_INSUFFICIENT_FRAME_DATA"; - case GIF_FRAME_DATA_ERROR: - return "GIF_FRAME_DATA_ERROR"; - case GIF_INSUFFICIENT_DATA: - return "GIF_INSUFFICIENT_DATA"; - case GIF_DATA_ERROR: - return "GIF_DATA_ERROR"; - case GIF_INSUFFICIENT_MEMORY: - return "GIF_INSUFFICIENT_MEMORY"; - default: - return "Unknown gif result code"; - } - } - - Gif::Gif(const boost::filesystem::path &filepath) : - currentFrame(0), - timeElapsedCs(0.0) - { - try - { - fileContent = getFileContent(filepath); - } - catch(FileException &e) - { - throw GifLoadException(e.what()); - } - - try - { - init(); - } - catch(GifLoadException &e) - { - delete[] fileContent.data; - throw e; - } - } - - Gif::Gif(StringView &&_fileContent) : - fileContent(move(_fileContent)), - currentFrame(0), - timeElapsedCs(0.0) + SfmlGif::SfmlGif(StringView fileContent) : Gif(fileContent) { - try - { - init(); - } - catch(GifLoadException &e) - { - delete[] fileContent.data; - throw e; - } + } - - void Gif::init() + + + bool SfmlGif::createTexture() { - gif_bitmap_callback_vt bitmapCallbacks = - { - bitmapCreate, - bitmapDestroy, - bitmapGetBuffer, - bitmapSetOpaque, - bitmapTestOpaque, - bitmapModified - }; - - gif_create(&gif, &bitmapCallbacks); - - gif_result code; - do + Vec2u size = getSize(); + if(!texture.create(size.x, size.y)) { - code = gif_initialise(&gif, fileContent.size, (unsigned char*)fileContent.data); - if(code != GIF_OK && code != GIF_WORKING) - { - string errMsg = "Failed to initialize gif, reason: "; - errMsg += gifResultToString(code); - throw GifLoadException(errMsg); - } + fprintf(stderr, "Failed to create texture for gif!\n"); + return false; } - while(code != GIF_OK); - - if(!texture.create(gif.width, gif.height)) - throw GifLoadException("Failed to create texture for gif"); - + texture.setSmooth(true); - sprite.setTexture(texture, true); - } - - Gif::~Gif() - { - gif_finalise(&gif); - delete[] fileContent.data; - } - - sf::Vector2u Gif::getSize() const - { - return sprite.getTexture()->getSize(); - } - - void Gif::setPosition(const sf::Vector2f &position) - { - sprite.setPosition(position); + texture.generateMipmap(); + return true; } - - sf::Vector2f Gif::getPosition() const - { - return sprite.getPosition(); - } - - void Gif::setScale(const sf::Vector2f &scale) - { - sprite.setScale(scale); - } - - void Gif::setColor(sf::Color color) - { - sprite.setColor(color); - } - - void Gif::draw(sf::RenderTarget &target, const sf::RenderStates &renderState) - { - double timeElapsedMilli = (double)frameTimer.getElapsedTime().asMilliseconds(); - // If gif is not redrawn for a while, then we reset timer (gif is paused). This happens when gif is not visible and then appears visible - // (because it's visible in window). The reason this is done is to prevent too much time between rendering gif frames, as processing a gif - // requires to process all frames between two points in time, if elapsed frame time is too high, then we would require to process several - // frames of gif in one application render frame. - if(timeElapsedMilli > 1000.0) - timeElapsedMilli = 0.0; - double frameDeltaCs = timeElapsedMilli * 0.1; // Centisecond - frameTimer.restart(); - timeElapsedCs += frameDeltaCs; - - unsigned char *image = nullptr; - u32 startFrame = currentFrame; - while(true) - { - u32 i = currentFrame % gif.frame_count; - gif_result code = gif_decode_frame(&gif, i); - if(code != GIF_OK) - { - printf("Warning: gif_decode_frame: %s\n", gifResultToString(code)); - break; - } - - gif_frame &frame = gif.frames[i]; - // frame_delay is in centiseconds - unsigned int frameDelay = frame.frame_delay; - if(frameDelay == 0) - frameDelay = 7; - double fFrameDelay = (double)frameDelay; - if(timeElapsedCs >= fFrameDelay) - timeElapsedCs -= fFrameDelay; - else - break; - - image = (unsigned char*)gif.frame_image; - ++currentFrame; - } - - if(currentFrame != startFrame) - { - texture.update(image); - // TODO: Check if this is too heavy - texture.generateMipmap(); - sprite.setTexture(texture, true); - } - target.draw(sprite, renderState); - } - - bool Gif::isDataGif(const StringView &data) + + void SfmlGif::updateTexture(void *textureData) { - return data.size >= 6 && (memcmp(data.data, "GIF87a", 6) == 0 || memcmp(data.data, "GIF89a", 6) == 0); + texture.update((const sf::Uint8*)textureData); } -} +}
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