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msdkdec: Fix the PTS of output frames

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Currently we use the gst_video_decoder_get_oldest_frame()
to get the old pending frame to output. But this is not correct
if pts re-ordering required. This patch uses a custom made
get_old_frame() which accounts the PTS too similar to the
v4l2decoder.

https://bugzilla.gnome.org/show_bug.cgi?id=796699
This commit is contained in:
Sreerenj Balachandran 2018-07-02 16:42:20 -08:00
parent 5c88da4a4c
commit 9efb4c9179
1 changed files with 46 additions and 2 deletions
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48
sys/msdk/gstmsdkdec.c
View file

@ -86,6 +86,50 @@ static gboolean gst_msdkdec_drain (GstVideoDecoder * decoder);
static gboolean gst_msdkdec_flush (GstVideoDecoder * decoder);
static gboolean gst_msdkdec_negotiate (GstMsdkDec * thiz, gboolean hard_reset);
static GstVideoCodecFrame *
gst_msdkdec_get_oldest_frame (GstVideoDecoder * decoder)
{
GstVideoCodecFrame *frame = NULL, *old_frame = NULL;
GList *frames, *l;
gint count = 0;
frames = gst_video_decoder_get_frames (decoder);
for (l = frames; l != NULL; l = l->next) {
GstVideoCodecFrame *f = l->data;
if (!GST_CLOCK_TIME_IS_VALID (f->pts)) {
GST_INFO
("Frame doesn't have a valid pts yet, Use gst_video_decoder_get_oldest_frame()"
"with out considering the PTS for selecting the frame to be finished");
old_frame = gst_video_decoder_get_oldest_frame (decoder);
break;
}
if (!frame || frame->pts > f->pts)
frame = f;
count++;
}
if (old_frame)
frame = old_frame;
if (frame) {
GST_LOG_OBJECT (decoder,
"Oldest frame is %d %" GST_TIME_FORMAT " and %d frames left",
frame->system_frame_number, GST_TIME_ARGS (frame->pts), count - 1);
gst_video_codec_frame_ref (frame);
}
if (old_frame)
gst_video_codec_frame_unref (old_frame);
g_list_free_full (frames, (GDestroyNotify) gst_video_codec_frame_unref);
return frame;
}
static GstFlowReturn
allocate_output_buffer (GstMsdkDec * thiz, GstBuffer ** buffer)
{
@ -93,7 +137,7 @@ allocate_output_buffer (GstMsdkDec * thiz, GstBuffer ** buffer)
GstVideoCodecFrame *frame;
GstVideoDecoder *decoder = GST_VIDEO_DECODER (thiz);
frame = gst_video_decoder_get_oldest_frame (decoder);
frame = gst_msdkdec_get_oldest_frame (decoder);
if (!frame) {
if (GST_PAD_IS_FLUSHING (decoder->srcpad))
return GST_FLOW_FLUSHING;
@ -564,7 +608,7 @@ gst_msdkdec_finish_task (GstMsdkDec * thiz, MsdkDecTask * task)
return GST_FLOW_ERROR;
}
frame = gst_video_decoder_get_oldest_frame (decoder);
frame = gst_msdkdec_get_oldest_frame (decoder);
task->sync_point = NULL;
l = g_list_find_custom (thiz->decoded_msdk_surfaces, task->surface,