[Bug 783726] vaapi: failure of some tcs in gst-validate-launcher

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=783726

Hyunjun Ko <zzoon at igalia.com> changed:

           What    |Removed                     |Added
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 Attachment #353656|reviewed                    |none
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--- Comment #4 from Hyunjun Ko <zzoon at igalia.com> ---
Created attachment 353741
  --> https://bugzilla.gnome.org/attachment.cgi?id=353741&action=edit
libs: decoder: h264: initialize active_sps/pps in reset

Since commits in https://bugzilla.gnome.org/show_bug.cgi?id=781142 landed,
they introduced regression in seek.

Formerly, once seek is done, decoder drops P-frames until I-frame arrives.
But since the commits landed, it doesn't drop P-frame and does try to
decode it continuously because active_sps is still alive. See ensure_sps
function.
But there are prev_frames and prev_ref_frames reset already, then it
causes assertion.

So it's necessary to reset active_sps/pps also in reset method.

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