__unused JNIEXPORT jlong JNICALL
Java_pl_droidsonroids_gif_GifInfoHandle_renderFrame(JNIEnv *env, jclass __unused handleClass,
jlong gifInfo, jobject jbitmap) {
GifInfo *info = (GifInfo *) (intptr_t) gifInfo;
if (info == NULL)
return -1;
time_t renderStartTime = getRealTime();
void *pixels;
if (lockPixels(env, jbitmap, info, &pixels) != 0) {
return 0;
}
DDGifSlurp(info, true);
const uint_fast16_t frameDuration = getBitmap((argb *) pixels, info);
unlockPixels(env, jbitmap);
return calculateInvalidationDelay(info, renderStartTime, frameDuration);
}
static void *slurp(void *pVoidInfo) {
GifInfo *info = pVoidInfo;
while (1) {
pthread_mutex_lock(&info->surfaceDescriptor->slurpMutex);
while (info->surfaceDescriptor->slurpHelper == 0)
pthread_cond_wait(&info->surfaceDescriptor->slurpCond, &info->surfaceDescriptor->slurpMutex);
if (info->surfaceDescriptor->slurpHelper == 2) {
pthread_mutex_unlock(&info->surfaceDescriptor->slurpMutex);
break;
}
info->surfaceDescriptor->slurpHelper = 0;
pthread_mutex_unlock(&info->surfaceDescriptor->slurpMutex);
DDGifSlurp(info, true);
pthread_mutex_lock(&info->surfaceDescriptor->renderMutex);
info->surfaceDescriptor->renderHelper = 1;
pthread_cond_signal(&info->surfaceDescriptor->renderCond);
pthread_mutex_unlock(&info->surfaceDescriptor->renderMutex);
}
DetachCurrentThread();
return NULL;
}
static void *slurp(void *pVoidInfo) {
GifInfo *info = pVoidInfo;
SurfaceDescriptor *descriptor = info->frameBufferDescriptor;
while (1) {
pthread_mutex_lock(&descriptor->slurpMutex);
while (descriptor->slurpHelper == 0) {
pthread_cond_wait(&descriptor->slurpCond, &descriptor->slurpMutex);
}
if (descriptor->slurpHelper == 2) {
pthread_mutex_unlock(&descriptor->slurpMutex);
DetachCurrentThread();
return NULL;
}
descriptor->slurpHelper = 0;
pthread_mutex_unlock(&descriptor->slurpMutex);
DDGifSlurp(info, true, false);
pthread_mutex_lock(&descriptor->renderMutex);
descriptor->renderHelper = 1;
pthread_cond_signal(&descriptor->renderCond);
pthread_mutex_unlock(&descriptor->renderMutex);
}
}
GifInfo *createGifInfo(GifSourceDescriptor *descriptor, JNIEnv *env) {
if (descriptor->startPos < 0) {
descriptor->Error = D_GIF_ERR_NOT_READABLE;
}
if (descriptor->Error != 0 || descriptor->GifFileIn == NULL) {
bool readErrno = descriptor->rewindFunc == fileRewind && (descriptor->Error == D_GIF_ERR_NOT_READABLE || descriptor->Error == D_GIF_ERR_READ_FAILED);
throwGifIOException(descriptor->Error, env, readErrno);
DGifCloseFile(descriptor->GifFileIn);
return NULL;
}
GifInfo *info = malloc(sizeof(GifInfo));
if (info == NULL) {
DGifCloseFile(descriptor->GifFileIn);
throwException(env, OUT_OF_MEMORY_ERROR, OOME_MESSAGE);
return NULL;
}
info->controlBlock = malloc(sizeof(GraphicsControlBlock));
if (info->controlBlock == NULL) {
DGifCloseFile(descriptor->GifFileIn);
throwException(env, OUT_OF_MEMORY_ERROR, OOME_MESSAGE);
return NULL;
}
setGCBDefaults(info->controlBlock);
info->destructor = NULL;
info->gifFilePtr = descriptor->GifFileIn;
info->startPos = descriptor->startPos;
info->currentIndex = 0;
info->nextStartTime = 0;
info->lastFrameRemainder = -1;
info->comment = NULL;
info->loopCount = 1;
info->currentLoop = 0;
info->speedFactor = 1.0;
info->sourceLength = descriptor->sourceLength;
info->backupPtr = NULL;
info->rewindFunction = descriptor->rewindFunc;
info->frameBufferDescriptor = NULL;
info->isOpaque = false;
info->sampleSize = 1;
DDGifSlurp(info, false, false);
info->rasterBits = NULL;
info->rasterSize = 0;
info->originalHeight = info->gifFilePtr->SHeight;
info->originalWidth = info->gifFilePtr->SWidth;
if (descriptor->GifFileIn->SWidth < 1 || descriptor->GifFileIn->SHeight < 1) {
DGifCloseFile(descriptor->GifFileIn);
throwGifIOException(D_GIF_ERR_INVALID_SCR_DIMS, env, false);
return NULL;
}
if (descriptor->GifFileIn->Error == D_GIF_ERR_NOT_ENOUGH_MEM) {
cleanUp(info);
throwException(env, OUT_OF_MEMORY_ERROR, OOME_MESSAGE);
return NULL;
}
#if defined(STRICT_FORMAT_89A)
descriptor->Error = descriptor->GifFileIn->Error;
#endif
if (descriptor->GifFileIn->ImageCount == 0) {
descriptor->Error = D_GIF_ERR_NO_FRAMES;
} else if (descriptor->GifFileIn->Error == D_GIF_ERR_REWIND_FAILED) {
descriptor->Error = D_GIF_ERR_REWIND_FAILED;
}
if (descriptor->Error != 0) {
cleanUp(info);
throwGifIOException(descriptor->Error, env, false);
return NULL;
}
return info;
}
jobject createGifHandle(GifSourceDescriptor *descriptor, JNIEnv *env, jboolean justDecodeMetaData) {
if (descriptor->startPos < 0) {
descriptor->Error = D_GIF_ERR_NOT_READABLE;
DGifCloseFile(descriptor->GifFileIn);
}
if (descriptor->Error != 0 || descriptor->GifFileIn == NULL) {
throwGifIOException(descriptor->Error, env);
return NULL;
}
GifInfo *info = malloc(sizeof(GifInfo));
if (info == NULL) {
DGifCloseFile(descriptor->GifFileIn);
throwException(env, OUT_OF_MEMORY_ERROR, OOME_MESSAGE);
return NULL;
}
info->controlBlock = calloc(sizeof(GraphicsControlBlock), 1);
info->controlBlock->DelayTime = DEFAULT_FRAME_DURATION_MS;
if (info->controlBlock == NULL) {
DGifCloseFile(descriptor->GifFileIn);
throwException(env, OUT_OF_MEMORY_ERROR, OOME_MESSAGE);
return NULL;
}
info->gifFilePtr = descriptor->GifFileIn;
info->startPos = descriptor->startPos;
info->currentIndex = 0;
info->nextStartTime = 0;
info->lastFrameRemainder = -1;
info->comment = NULL;
info->loopCount = 1;
info->currentLoop = 0;
info->speedFactor = 1.0;
info->sourceLength = descriptor->sourceLength;
info->backupPtr = NULL;
info->rewindFunction = descriptor->rewindFunc;
info->surfaceDescriptor = NULL;
info->isOpaque = JNI_FALSE;
DDGifSlurp(info, false);
if (justDecodeMetaData == JNI_TRUE)
info->rasterBits = NULL;
else {
info->rasterBits = malloc(
descriptor->GifFileIn->SHeight * descriptor->GifFileIn->SWidth * sizeof(GifPixelType));
if (info->rasterBits == NULL) {
descriptor->GifFileIn->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
}
}
if (descriptor->GifFileIn->SWidth < 1 || descriptor->GifFileIn->SHeight < 1) {
DGifCloseFile(descriptor->GifFileIn);
throwGifIOException(D_GIF_ERR_INVALID_SCR_DIMS, env);
return NULL;
}
if (descriptor->GifFileIn->Error == D_GIF_ERR_NOT_ENOUGH_MEM) {
cleanUp(info);
throwException(env, OUT_OF_MEMORY_ERROR, OOME_MESSAGE);
return NULL;
}
#if defined(STRICT_FORMAT_89A)
descriptor->Error = descriptor->GifFileIn->Error;
#endif
if (descriptor->GifFileIn->ImageCount == 0) {
descriptor->Error = D_GIF_ERR_NO_FRAMES;
}
else if (descriptor->GifFileIn->Error == D_GIF_ERR_REWIND_FAILED) {
descriptor->Error = D_GIF_ERR_REWIND_FAILED;
}
if (descriptor->Error != 0) {
cleanUp(info);
throwGifIOException(descriptor->Error, env);
return NULL;
}
jclass gifInfoHandleClass = (*env)->FindClass(env, "pl/droidsonroids/gif/GifInfoHandle");
if (gifInfoHandleClass == NULL) {
cleanUp(info);
return NULL;
}
jmethodID gifInfoHandleCtorMID = (*env)->GetMethodID(env, gifInfoHandleClass, "<init>", "(JIII)V");
if (gifInfoHandleCtorMID == NULL) {
cleanUp(info);
return NULL;
}
return (*env)->NewObject(env, gifInfoHandleClass, gifInfoHandleCtorMID,
(jlong) (intptr_t) info, info->gifFilePtr->SWidth, info->gifFilePtr->SHeight,
info->gifFilePtr->ImageCount);
}
