Ejemplos de ff_thread_free en C++ (Cpp)

Ejemplo n.º 1

Archivo: pthread.c Proyecto: AlexanderGarmash/ffmpeg-ndk

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;
}

Ejemplo n.º 2

Archivo: w32thread.c Proyecto: Tjoppen/FFmpeg

int ff_thread_init(AVCodecContext *s){
    int i;
    ThreadContext *c;
    uint32_t threadid;

    if (s->thread_type && !(s->thread_type & FF_THREAD_SLICE)) {
        av_log(s, AV_LOG_WARNING,
            "This thread library only supports FF_THREAD_SLICE"
            " threading algorithm.\n");
        return 0;
    }

    if (s->thread_count <= 1)
        return 0;

    s->active_thread_type= FF_THREAD_SLICE;

    assert(!s->thread_opaque);
    c= av_mallocz(sizeof(ThreadContext)*s->thread_count);
    s->thread_opaque= c;
    if(!(c[0].work_sem = CreateSemaphore(NULL, 0, INT_MAX, NULL)))
        goto fail;
    if(!(c[0].job_sem  = CreateSemaphore(NULL, 1, 1, NULL)))
        goto fail;
    if(!(c[0].done_sem = CreateSemaphore(NULL, 0, INT_MAX, NULL)))
        goto fail;

    for(i=0; i<s->thread_count; i++){
//printf("init semaphors %d\n", i); fflush(stdout);
        c[i].avctx= s;
        c[i].work_sem = c[0].work_sem;
        c[i].job_sem  = c[0].job_sem;
        c[i].done_sem = c[0].done_sem;
        c[i].threadnr = i;

//printf("create thread %d\n", i); fflush(stdout);
        c[i].thread = (HANDLE)_beginthreadex(NULL, 0, thread_func, &c[i], 0, &threadid );
        if( !c[i].thread ) goto fail;
    }
//printf("init done\n"); fflush(stdout);

    s->execute= avcodec_thread_execute;
    s->execute2= avcodec_thread_execute2;

    return 0;
fail:
    ff_thread_free(s);
    return -1;
}