[Bug 732266] vaapidecode: h264: add support for decoding SVC base layers only

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=732266

--- Comment #20 from Orestis Floros <orestisf1993 at gmail.com> ---
Created attachment 357966
  --> https://bugzilla.gnome.org/attachment.cgi?id=357966&action=edit
h264parse: add coded slice extension in AU detection

(In reply to sreerenj from comment #19)
> (In reply to Orestis Floros from comment #14)
> > Created attachment 357926 [details] [review] [review]
> > h264parse: skip prefix NALs for AU detection
> > 
> > These are my changes so far for h264parse that we discussed with Sreerenj.
> > This should be placed after attachment 356212 [details] [review] [review] from bug
> > 732267.
> > 
> > (In reply to sreerenj from comment #11)
> > > On top of that, the picture_start finding should include the prefix nal and
> > > the slice extension nal.
> > 
> > Adding slice extension to complete = ... causes multiple errors for MVC
> > streams so I am not sure about that yet:
> > 
> > > vaapi gstvaapidecoder_h264.c:2923:exec_picture_refs_modification_1: list 0 entry 0 is empty
> 
> Please show me the code where you added the check? Also, Which video sample?

For most samples:

MVCDS3.264
MVCDS-4.264
MVCDS-4_old.264
MVCDS-5.264
MVCDS-5_old.264
MVCDS-6.264
MVCDS-6_old.264
MVCICT-1.264
MVCICT-2.264
MVCNV1.264
MVCNV-2.264
MVCNV-2_old.264
MVCNV-3.264
MVCNV-3_old.264
MVCNV4.264
MVCRP_3.264
MVCRP_4.264
MVCRP_5.264
MVCRP_6.264
MVCSPS-1.264
MVCSPS-1_old.264
MVCSPS-2.264
MVCSPS-2_old.264

from ITU-T_H.264.1(2016-02)_MVC_bitstreams.zip from
http://www.itu.int/net/itu-t/sigdb/spevideo/VideoForm-s.aspx?val=102002641

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