static void
gst_vaapidecode_purge (GstVaapiDecode * decode)
{
GstVaapiDecoderStatus status;
if (!decode->decoder)
return;
status = gst_vaapi_decoder_flush (decode->decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
GST_INFO_OBJECT (decode, "failed to flush decoder (status %d)", status);
/* Purge all decoded frames as we don't need them (e.g. flush and close)
* Releasing the frames is important, otherwise the frames are not
* freed. */
do {
GstVideoCodecFrame *frame = NULL;
status =
gst_vaapi_decoder_get_frame_with_timeout (decode->decoder, &frame, 0);
if (frame) {
gst_video_decoder_release_frame (GST_VIDEO_DECODER (decode), frame);
gst_video_codec_frame_unref (frame);
}
} while (status == GST_VAAPI_DECODER_STATUS_SUCCESS);
}
static GstFlowReturn
gst_vaapidecode_finish (GstVideoDecoder * vdec)
{
GstVaapiDecode *const decode = GST_VAAPIDECODE (vdec);
GstVaapiDecoderStatus status;
GstFlowReturn ret;
if (!decode->decoder)
return GST_FLOW_OK;
gst_vaapidecode_flush_output_adapter (decode);
status = gst_vaapi_decoder_flush (decode->decoder);
ret = gst_vaapidecode_push_all_decoded_frames (decode);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
goto error_decoder_flush;
return ret;
/* ERRORS: */
error_decoder_flush:
{
GST_WARNING_OBJECT (decode, "failed to flush decoder (status %d)", status);
return GST_FLOW_ERROR;
}
}
static gboolean
gst_vaapidecode_internal_flush (GstVideoDecoder * vdec)
{
GstVaapiDecode *const decode = GST_VAAPIDECODE (vdec);
GstVaapiDecoderStatus status;
if (!decode->decoder)
return TRUE;
/* If there is something in GstVideoDecoder's output adapter, then
submit the frame for decoding */
if (decode->current_frame_size) {
gst_video_decoder_have_frame (vdec);
decode->current_frame_size = 0;
}
status = gst_vaapi_decoder_flush (decode->decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) {
GST_WARNING_OBJECT (decode, "failed to flush decoder (status %d)", status);
return FALSE;
}
return TRUE;
}
static gpointer
decoder_thread (gpointer data)
{
App *const app = data;
GError *error = NULL;
GstVaapiDecoderStatus status;
GstVaapiSurfaceProxy *proxy;
RenderFrame *rfp;
GstBuffer *buffer;
GstClockTime pts;
gboolean got_surface, got_eos = FALSE;
gint64 end_time;
guint ofs;
g_print ("Decoder thread started\n");
#define SEND_ERROR(...) \
do { \
error = g_error_new(APP_ERROR, APP_ERROR_DECODER, __VA_ARGS__); \
goto send_error; \
} while (0)
pts = g_get_monotonic_time ();
ofs = 0;
while (!app->decoder_thread_cancel) {
if (G_UNLIKELY (ofs == app->file_size))
buffer = NULL;
else {
const gsize size = MIN (4096, app->file_size - ofs);
buffer = gst_buffer_new_wrapped_full (GST_MEMORY_FLAG_READONLY,
app->file_data, app->file_size, ofs, size, NULL, NULL);
if (!buffer)
SEND_ERROR ("failed to allocate new buffer");
ofs += size;
}
if (!gst_vaapi_decoder_put_buffer (app->decoder, buffer))
SEND_ERROR ("failed to push buffer to decoder");
gst_buffer_replace (&buffer, NULL);
get_surface:
status = gst_vaapi_decoder_get_surface (app->decoder, &proxy);
switch (status) {
case GST_VAAPI_DECODER_STATUS_SUCCESS:
gst_vaapi_surface_proxy_set_destroy_notify (proxy,
(GDestroyNotify) decoder_release, app);
rfp = render_frame_new ();
if (!rfp)
SEND_ERROR ("failed to allocate render frame");
rfp->proxy = proxy;
rfp->pts = pts;
rfp->duration = app->frame_duration;
pts += app->frame_duration;
g_async_queue_push (app->decoder_queue, rfp);
break;
case GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA:
/* nothing to do, just continue to the next iteration */
break;
case GST_VAAPI_DECODER_STATUS_END_OF_STREAM:
gst_vaapi_decoder_flush (app->decoder);
if (got_eos)
goto send_eos;
got_eos = TRUE;
break;
case GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE:
end_time = g_get_monotonic_time () + G_TIME_SPAN_SECOND;
g_mutex_lock (&app->mutex);
got_surface = g_cond_wait_until (&app->decoder_ready, &app->mutex,
end_time);
g_mutex_unlock (&app->mutex);
if (got_surface)
goto get_surface;
SEND_ERROR ("failed to acquire a surface within one second");
break;
default:
SEND_ERROR ("%s", get_decoder_status_string (status));
break;
}
}
return NULL;
#undef SEND_ERROR
send_eos:
app_send_eos (app);
return NULL;
send_error:
app_send_error (app, error);
return NULL;
}
