static unsigned char *proxy_thread_next_frame(ProxyQueue *queue, MovieClip *clip, size_t *size_r, int *cfra_r)
{
unsigned char *mem = NULL;
BLI_spin_lock(&queue->spin);
if (!*queue->stop && queue->cfra <= queue->efra) {
MovieClipUser user = {0};
char name[FILE_MAX];
size_t size;
int file;
user.framenr = queue->cfra;
BKE_movieclip_filename_for_frame(clip, &user, name);
file = open(name, O_BINARY | O_RDONLY, 0);
if (file < 0) {
BLI_spin_unlock(&queue->spin);
return NULL;
}
size = BLI_file_descriptor_size(file);
if (size < 1) {
close(file);
BLI_spin_unlock(&queue->spin);
return NULL;
}
mem = MEM_mallocN(size, "movieclip proxy memory file");
if (read(file, mem, size) != size) {
close(file);
BLI_spin_unlock(&queue->spin);
MEM_freeN(mem);
return NULL;
}
*size_r = size;
*cfra_r = queue->cfra;
queue->cfra++;
close(file);
*queue->do_update = 1;
*queue->progress = (float)(queue->cfra - queue->sfra) / (queue->efra - queue->sfra);
}
BLI_spin_unlock(&queue->spin);
return mem;
}
/* read file for specified frame number to the memory */
static unsigned char *prefetch_read_file_to_memory(
MovieClip *clip, int current_frame, short render_size, short render_flag,
size_t *r_size)
{
MovieClipUser user = {0};
char name[FILE_MAX];
size_t size;
int file;
unsigned char *mem;
user.framenr = current_frame;
user.render_size = render_size;
user.render_flag = render_flag;
BKE_movieclip_filename_for_frame(clip, &user, name);
file = BLI_open(name, O_BINARY | O_RDONLY, 0);
if (file == -1) {
return NULL;
}
size = BLI_file_descriptor_size(file);
if (size < 1) {
close(file);
return NULL;
}
mem = MEM_mallocN(size, "movieclip prefetch memory file");
if (read(file, mem, size) != size) {
close(file);
MEM_freeN(mem);
return NULL;
}
*r_size = size;
close(file);
return mem;
}
