[Bug 787261] New: vaapi H.264 decode intra-refresh dosn't work

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787261

            Bug ID: 787261
           Summary: vaapi H.264 decode intra-refresh dosn't work
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer-vaapi
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: holger.weber at telerob.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: bsreerenj at gmail.com, vjaquez at igalia.com
     GNOME version: ---

If vaapih264dec is used to decode a low-latency stream with intra-refresh all
frames are dropped.

Following quick hack works but may break all other things
(gstvaapidecoder_h264.c).

.....
priv->decoder_state |= sps_pi->state;
  if (!(priv->decoder_state & GST_H264_VIDEO_STATE_GOT_I_FRAME)) {
/* removed  don't wait for a valid I-Frame (intra refresh problem)
    if (priv->decoder_state & GST_H264_VIDEO_STATE_GOT_P_SLICE)
      goto drop_frame;
*/
.....

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