int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
{
PerThreadContext *p = avctx->thread_opaque;
int *progress, err;
f->owner = avctx;
ff_init_buffer_info(avctx, f);
if (!(avctx->active_thread_type&FF_THREAD_FRAME)) {
f->thread_opaque = NULL;
return avctx->get_buffer(avctx, f);
}
if (p->state != STATE_SETTING_UP &&
(avctx->codec->update_thread_context || (!avctx->thread_safe_callbacks &&
avctx->get_buffer != avcodec_default_get_buffer))) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n");
return -1;
}
pthread_mutex_lock(&p->parent->buffer_mutex);
f->thread_opaque = progress = allocate_progress(p);
if (!progress) {
pthread_mutex_unlock(&p->parent->buffer_mutex);
return -1;
}
progress[0] =
progress[1] = -1;
if (avctx->thread_safe_callbacks ||
avctx->get_buffer == avcodec_default_get_buffer) {
err = avctx->get_buffer(avctx, f);
} else {
p->requested_frame = f;
p->state = STATE_GET_BUFFER;
pthread_mutex_lock(&p->progress_mutex);
pthread_cond_broadcast(&p->progress_cond);
while (p->state != STATE_SETTING_UP)
pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
err = p->result;
pthread_mutex_unlock(&p->progress_mutex);
if (!avctx->codec->update_thread_context)
ff_thread_finish_setup(avctx);
}
if (err) {
free_progress(f);
f->thread_opaque = NULL;
}
pthread_mutex_unlock(&p->parent->buffer_mutex);
return err;
}
static gint
progress_end_cb(GWEN_GUI *gwen_gui, guint32 id)
{
GncGWENGui *gui = GETDATA_GUI(gwen_gui);
Progress *progress;
g_return_val_if_fail(gui, -1);
g_return_val_if_fail(id == g_list_length(gui->progresses), -1);
ENTER("gui=%p, id=%d", gui, id);
if (gui->state != RUNNING)
{
/* Ignore finishes of progresses we do not track */
LEAVE("not running anymore");
return 0;
}
/* Hide progress */
progress = (Progress*) gui->progresses->data;
hide_progress(gui, progress);
/* Remove progress from stack and free memory */
gui->progresses = g_list_delete_link(gui->progresses, gui->progresses);
free_progress(progress, NULL);
if (!gui->progresses)
{
/* top-level progress finished */
set_finished(gui);
}
LEAVE(" ");
return 0;
}
/// Releases the buffers that this decoding thread was the last user of.
static void release_delayed_buffers(PerThreadContext *p)
{
FrameThreadContext *fctx = p->parent;
while (p->num_released_buffers > 0) {
AVFrame *f;
pthread_mutex_lock(&fctx->buffer_mutex);
f = &p->released_buffers[--p->num_released_buffers];
free_progress(f);
f->thread_opaque = NULL;
f->owner->release_buffer(f->owner, f);
pthread_mutex_unlock(&fctx->buffer_mutex);
}
}