BOOL fipMultiPage::open(fipMemoryIO& memIO, int flags) {
// try to guess the file format from the filename
FREE_IMAGE_FORMAT fif = memIO.getFileType();
// check for supported file types
if((fif == FIF_UNKNOWN) || (fif != FIF_TIFF) && (fif != FIF_ICO) && (fif != FIF_GIF))
return FALSE;
// open the stream
_mpage = FreeImage_LoadMultiBitmapFromMemory(fif, memIO, flags);
return (NULL != _mpage ) ? TRUE : FALSE;
}
static void *bg_new_img(void *data)
{
/* so we can poll for it */
block_usr1_signal();
struct imv_loader *ldr = data;
char path[PATH_MAX] = "-";
pthread_mutex_lock(&ldr->lock);
int from_stdin = !strncmp(path, ldr->path, 2);
if(!from_stdin) {
(void)snprintf(path, PATH_MAX, "%s", ldr->path);
}
pthread_mutex_unlock(&ldr->lock);
FREE_IMAGE_FORMAT fmt;
if (from_stdin) {
pthread_mutex_lock(&ldr->lock);
ldr->fi_buffer = FreeImage_OpenMemory(ldr->buffer, ldr->buffer_size);
fmt = FreeImage_GetFileTypeFromMemory(ldr->fi_buffer, 0);
pthread_mutex_unlock(&ldr->lock);
} else {
fmt = FreeImage_GetFileType(path, 0);
}
if(fmt == FIF_UNKNOWN) {
if (from_stdin) {
pthread_mutex_lock(&ldr->lock);
FreeImage_CloseMemory(ldr->fi_buffer);
pthread_mutex_unlock(&ldr->lock);
}
error_occurred(ldr);
return NULL;
}
int num_frames = 1;
FIMULTIBITMAP *mbmp = NULL;
FIBITMAP *bmp = NULL;
int width, height;
int raw_frame_time = 100; /* default to 100 */
if(fmt == FIF_GIF) {
if(from_stdin) {
pthread_mutex_lock(&ldr->lock);
mbmp = FreeImage_LoadMultiBitmapFromMemory(FIF_GIF, ldr->fi_buffer,
GIF_LOAD256);
pthread_mutex_unlock(&ldr->lock);
} else {
mbmp = FreeImage_OpenMultiBitmap(FIF_GIF, path,
/* don't create file */ 0,
/* read only */ 1,
/* keep in memory */ 1,
/* flags */ GIF_LOAD256);
}
if(!mbmp) {
error_occurred(ldr);
return NULL;
}
num_frames = FreeImage_GetPageCount(mbmp);
FIBITMAP *frame = FreeImage_LockPage(mbmp, 0);
width = FreeImage_GetWidth(frame);
height = FreeImage_GetHeight(frame);
bmp = FreeImage_ConvertTo32Bits(frame);
/* get duration of first frame */
FITAG *tag = NULL;
FreeImage_GetMetadata(FIMD_ANIMATION, frame, "FrameTime", &tag);
if(FreeImage_GetTagValue(tag)) {
raw_frame_time = *(int*)FreeImage_GetTagValue(tag);
}
FreeImage_UnlockPage(mbmp, frame, 0);
} else {
/* Future TODO: If we load image line-by-line we could stop loading large
* ones before wasting much more time/memory on them. */
int flags = (fmt == FIF_JPEG) ? JPEG_EXIFROTATE : 0;
FIBITMAP *image;
if(from_stdin) {
pthread_mutex_lock(&ldr->lock);
image = FreeImage_LoadFromMemory(fmt, ldr->fi_buffer, flags);
pthread_mutex_unlock(&ldr->lock);
} else {
image = FreeImage_Load(fmt, path, flags);
}
if(!image) {
error_occurred(ldr);
pthread_mutex_lock(&ldr->lock);
FreeImage_CloseMemory(ldr->fi_buffer);
ldr->fi_buffer = NULL;
pthread_mutex_unlock(&ldr->lock);
return NULL;
}
/* Check for cancellation before we convert pixel format */
if(is_thread_cancelled()) {
FreeImage_Unload(image);
return NULL;
}
width = FreeImage_GetWidth(bmp);
height = FreeImage_GetHeight(bmp);
bmp = FreeImage_ConvertTo32Bits(image);
FreeImage_Unload(image);
}
/* now update the loader */
pthread_mutex_lock(&ldr->lock);
/* check for cancellation before finishing */
if(is_thread_cancelled()) {
if(mbmp) {
FreeImage_CloseMultiBitmap(mbmp, 0);
}
if(bmp) {
FreeImage_Unload(bmp);
}
pthread_mutex_unlock(&ldr->lock);
return NULL;
}
if(ldr->mbmp) {
FreeImage_CloseMultiBitmap(ldr->mbmp, 0);
}
if(ldr->bmp) {
FreeImage_Unload(ldr->bmp);
}
ldr->mbmp = mbmp;
ldr->bmp = bmp;
if(ldr->out_bmp) {
FreeImage_Unload(ldr->out_bmp);
}
ldr->out_bmp = FreeImage_Clone(bmp);
ldr->out_is_new_image = 1;
ldr->width = width;
ldr->height = height;
ldr->cur_frame = 0;
ldr->next_frame = 1;
ldr->num_frames = num_frames;
ldr->frame_time = (double)raw_frame_time * 0.0001;
pthread_mutex_unlock(&ldr->lock);
return NULL;
}
FIMULTIBITMAP* fipMemoryIO::loadMultiPage(FREE_IMAGE_FORMAT fif, int flags) const {
return FreeImage_LoadMultiBitmapFromMemory(fif, _hmem, flags);
}
