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v4l2videodec: Keep part of the input buffer

Browse source 
Instead of completely getting rid of the input buffer, copy
the metadata, the flags and the timestamp into an empty buffer.
This way the decoder base class can copy that information again
to the output buffer.

https://bugzilla.gnome.org/show_bug.cgi?id=758424
This commit is contained in:
Nicolas Dufresne 2016-06-07 16:42:09 -04:00
parent a0a590369a
commit 462800e9c6
1 changed files with 13 additions and 6 deletions
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19
sys/v4l2/gstv4l2videodec.c
View file

@ -522,6 +522,8 @@ gst_v4l2_video_dec_handle_frame (GstVideoDecoder * decoder,
GstV4l2Error error = GST_V4L2_ERROR_INIT;
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
GstFlowReturn ret = GST_FLOW_OK;
gboolean processed = FALSE;
GstBuffer *tmp;
GST_DEBUG_OBJECT (self, "Handling frame %d", frame->system_frame_number);
@ -555,8 +557,8 @@ gst_v4l2_video_dec_handle_frame (GstVideoDecoder * decoder,
if (codec_data) {
gst_buffer_ref (codec_data);
} else {
codec_data = frame->input_buffer;
frame->input_buffer = NULL;
codec_data = gst_buffer_ref (frame->input_buffer);
processed = TRUE;
}
/* Ensure input internal pool is active */
@ -666,7 +668,7 @@ gst_v4l2_video_dec_handle_frame (GstVideoDecoder * decoder,
goto start_task_failed;
}
if (frame->input_buffer) {
if (!processed) {
GST_VIDEO_DECODER_STREAM_UNLOCK (decoder);
ret =
gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL (self->v4l2output->
@ -680,11 +682,16 @@ gst_v4l2_video_dec_handle_frame (GstVideoDecoder * decoder,
} else if (ret != GST_FLOW_OK) {
goto process_failed;
}
/* No need to keep input arround */
gst_buffer_replace (&frame->input_buffer, NULL);
}
/* No need to keep input arround */
tmp = frame->input_buffer;
frame->input_buffer = gst_buffer_new ();
gst_buffer_copy_into (frame->input_buffer, tmp,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS |
GST_BUFFER_COPY_META, 0, 0);
gst_buffer_unref (tmp);
gst_video_codec_frame_unref (frame);
return ret;