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vaapidecode: rework heuristics to detect decode timeout.

Browse source 
Rework heuristics to detect when downstream element ran into errors,
and thus failing to release any VA surface in due time for the current
frame to get decoded. In particular, recalibrate the render time base
when the first frame gets submitted downstream, or when there is no
timestamp that could be inferred.
This commit is contained in:
Gwenole Beauchesne 2013-04-18 15:55:26 +02:00
parent 851cc000c2
commit d2bf4ffd97
1 changed files with 21 additions and 5 deletions
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26
gst/vaapi/gstvaapidecode.c
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@ -213,9 +213,10 @@ gst_vaapidecode_decode_frame(GstVideoDecoder *vdec, GstVideoCodecFrame *frame)
GstFlowReturn ret;
gint64 end_time;
if (!decode->render_time_base)
decode->render_time_base = g_get_monotonic_time();
end_time = decode->render_time_base;
if (decode->render_time_base)
end_time = decode->render_time_base;
else
end_time = g_get_monotonic_time();
end_time += GST_TIME_AS_USECONDS(decode->last_buffer_time);
end_time += G_TIME_SPAN_SECOND;
@ -322,8 +323,22 @@ gst_vaapidecode_push_decoded_frame(GstVideoDecoder *vdec)
if (ret != GST_FLOW_OK)
goto error_commit_buffer;
if (GST_CLOCK_TIME_IS_VALID(out_frame->pts))
/* Estimate when this frame would no longer be needed for rendering */
if (GST_CLOCK_TIME_IS_VALID(out_frame->pts)) {
if (!decode->render_time_base)
decode->render_time_base = g_get_monotonic_time() -
GST_TIME_AS_USECONDS(out_frame->pts);
decode->last_buffer_time = out_frame->pts;
if (GST_CLOCK_TIME_IS_VALID(out_frame->duration))
decode->last_buffer_time += out_frame->duration;
else
decode->last_buffer_time += GST_SECOND;
}
else {
decode->render_time_base = 0;
decode->last_buffer_time = 0;
}
gst_video_codec_frame_unref(out_frame);
return GST_FLOW_OK;
@ -351,7 +366,8 @@ error_get_meta:
#endif
error_commit_buffer:
{
GST_DEBUG("video sink rejected the video buffer (error %d)", ret);
if (ret != GST_FLOW_FLUSHING)
GST_ERROR("video sink rejected the video buffer (error %d)", ret);
gst_video_codec_frame_unref(out_frame);
return GST_FLOW_EOS;
}