pthread_cond_signal(&c->current_job_cond);
pthread_cond_broadcast(&c->current_job_cond);
void avcodec_thread_free(AVCodecContext *avctx) {    ThreadContext *c = avctx->thread_opaque;    int i;        pthread_mutex_lock(&c->current_job_lock);    c->done = 1;    pthread_cond_signal(&c->current_job_cond);    pthread_mutex_unlock(&c->current_job_lock);    for (i=0; i<avctx->thread_count; i++)         pthread_join(c->workers[i], NULL);    pthread_mutex_destroy(&c->current_job_lock);    pthread_cond_destroy(&c->current_job_cond);    pthread_cond_destroy(&c->last_job_cond);    av_free(c->workers);    av_freep(c);}