struct video_export * video_export_init(char *path)
{
struct video_export *s;
s = (struct video_export *) malloc(sizeof(struct video_export));
assert(s != NULL);
platform_sem_init(&s->semaphore, 0, 0);
pthread_mutex_init(&s->lock, NULL);
s->total = s->queue_len = 0;
assert(path != NULL);
s->path = path;
s->head = s->tail = NULL;
memset(&s->saved_desc, 0, sizeof(s->saved_desc));
if(pthread_create(&s->thread_id, NULL, video_export_thread, s) != 0) {
fprintf(stderr, "[Video exporter] Failed to create thread.\n");
free(s);
return NULL;
}
return s;
}
void *fastdxt_init(char *num_threads_str)
{
/* This function does the following:
* 1. Allocate memory for buffers
* 2. Spawn compressor threads
*/
int x;
int i;
struct video_compress *compress;
if(num_threads_str && strcmp(num_threads_str, "help") == 0) {
printf("FastDXT usage:\n");
printf("\t-FastDXT[:<num_threads>]\n");
printf("\t\t<num_threads> - count of compress threads (default %d)\n", NUM_THREADS_DEFAULT);
return NULL;
}
compress = calloc(1, sizeof(struct video_compress));
/* initial values */
compress->num_threads = 0;
if(num_threads_str == NULL)
compress->num_threads = NUM_THREADS_DEFAULT;
else
compress->num_threads = atoi(num_threads_str);
assert (compress->num_threads >= 1 && compress->num_threads <= MAX_THREADS);
for(i = 0; i < 2; ++i) {
compress->out[i] = vf_alloc(1);
compress->tile[i] = vf_get_tile(compress->out[i], 0);
}
for(i = 0; i < 2; ++i) {
compress->tile[i]->width = 0;
compress->tile[i]->height = 0;
}
compress->thread_count = 0;
if (pthread_mutex_init(&(compress->lock), NULL)) {
perror("Error initializing mutex!");
return NULL;
}
for (x = 0; x < compress->num_threads; x++) {
platform_sem_init(&compress->thread_compress[x], 0, 0);
platform_sem_init(&compress->thread_done[x], 0, 0);
}
pthread_mutex_lock(&(compress->lock));
for (x = 0; x < compress->num_threads; x++) {
if (pthread_create
(&(compress->thread_ids[x]), NULL, (void *)compress_thread,
(void *)compress)) {
perror("Unable to create compressor thread!");
exit_uv(x);
return NULL;
}
}
pthread_mutex_unlock(&(compress->lock));
while(compress->num_threads != compress->thread_count) /* wait for all threads online */
;
fprintf(stderr, "All compression threads are online.\n");
return compress;
}