static bool updateGCB(GifInfo *info, uint_fast32_t *lastAllocatedGCBIndex) {
if (*lastAllocatedGCBIndex < info->gifFilePtr->ImageCount) {
GraphicsControlBlock *tmpInfos = reallocarray(info->controlBlock, info->gifFilePtr->ImageCount + 1, sizeof(GraphicsControlBlock));
if (tmpInfos == NULL) {
info->gifFilePtr->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
return false;
}
*lastAllocatedGCBIndex = info->gifFilePtr->ImageCount;
info->controlBlock = tmpInfos;
setGCBDefaults(&info->controlBlock[info->gifFilePtr->ImageCount]);
}
return true;
}
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;
}
