static int avcodec_thread_execute(AVCodecContext *avctx, action_func* func, void *arg, int *ret, int job_count, int job_size)
{
ThreadContext *c= avctx->thread_opaque;
int dummy_ret;
if (!(avctx->active_thread_type&FF_THREAD_SLICE) || avctx->thread_count <= 1)
return avcodec_default_execute(avctx, func, arg, ret, job_count, job_size);
if (job_count <= 0)
return 0;
pthread_mutex_lock(&c->current_job_lock);
c->current_job = avctx->thread_count;
c->job_count = job_count;
c->job_size = job_size;
c->args = arg;
c->func = func;
if (ret) {
c->rets = ret;
c->rets_count = job_count;
} else {
c->rets = &dummy_ret;
c->rets_count = 1;
}
pthread_cond_broadcast(&c->current_job_cond);
avcodec_thread_park_workers(c, avctx->thread_count);
return 0;
}
int avcodec_thread_execute(AVCodecContext *avctx, action_t* func, void **arg, int *ret, int job_count)
{
ThreadContext *c= avctx->thread_opaque;
int dummy_ret;
if (job_count <= 0)
return 0;
pthread_mutex_lock(&c->current_job_lock);
c->current_job = avctx->thread_count;
c->job_count = job_count;
c->args = arg;
c->func = func;
if (ret) {
c->rets = ret;
c->rets_count = job_count;
} else {
c->rets = &dummy_ret;
c->rets_count = 1;
}
pthread_cond_broadcast(&c->current_job_cond);
avcodec_thread_park_workers(c, avctx->thread_count);
return 0;
}
static int thread_init(AVCodecContext *avctx)
{
int i;
ThreadContext *c;
int thread_count = avctx->thread_count;
if (!thread_count) {
int nb_cpus = get_logical_cpus(avctx);
// use number of cores + 1 as thread count if there is more than one
if (nb_cpus > 1)
thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
else
thread_count = avctx->thread_count = 1;
}
if (thread_count <= 1) {
avctx->active_thread_type = 0;
return 0;
}
c = av_mallocz(sizeof(ThreadContext));
if (!c)
return -1;
c->workers = av_mallocz(sizeof(pthread_t)*thread_count);
if (!c->workers) {
av_free(c);
return -1;
}
avctx->thread_opaque = c;
c->current_job = 0;
c->job_count = 0;
c->job_size = 0;
c->done = 0;
pthread_cond_init(&c->current_job_cond, NULL);
pthread_cond_init(&c->last_job_cond, NULL);
pthread_mutex_init(&c->current_job_lock, NULL);
pthread_mutex_lock(&c->current_job_lock);
for (i=0; i<thread_count; i++) {
if(pthread_create(&c->workers[i], NULL, worker, avctx)) {
avctx->thread_count = i;
pthread_mutex_unlock(&c->current_job_lock);
ff_thread_free(avctx);
return -1;
}
}
avcodec_thread_park_workers(c, thread_count);
avctx->execute = avcodec_thread_execute;
avctx->execute2 = avcodec_thread_execute2;
return 0;
}
int avcodec_thread_init(AVCodecContext *avctx, int thread_count)
{
int i;
ThreadContext *c;
c = av_mallocz(sizeof(ThreadContext));
if (!c)
return -1;
c->workers = av_mallocz(sizeof(pthread_t)*thread_count);
if (!c->workers) {
av_free(c);
return -1;
}
avctx->thread_opaque = c;
avctx->thread_count = thread_count;
c->current_job = 0;
c->job_count = 0;
c->done = 0;
pthread_cond_init(&c->current_job_cond, NULL);
pthread_cond_init(&c->last_job_cond, NULL);
pthread_mutex_init(&c->current_job_lock, NULL);
pthread_mutex_lock(&c->current_job_lock);
for (i=0; i<thread_count; i++) {
if(pthread_create(&c->workers[i], NULL, worker, avctx)) {
avctx->thread_count = i;
pthread_mutex_unlock(&c->current_job_lock);
avcodec_thread_free(avctx);
return -1;
}
}
avcodec_thread_park_workers(c, thread_count);
avctx->execute = avcodec_thread_execute;
return 0;
}