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vp9: ignore frame_context_index field in key-/intraonly-frames.

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Reproduces a bug to remain consistent with libvpx' behaviour.
This commit is contained in:
Ronald S. Bultje 2016-04-17 09:28:56 -04:00
parent 6135aed0d2
commit ee729cc0ed
1 changed files with 2 additions and 0 deletions
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2
libavcodec/vp9.c
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@ -642,6 +642,8 @@ static int decode_frame_header(AVCodecContext *ctx,
s->s.h.refreshctx = s->s.h.errorres ? 0 : get_bits1(&s->gb);
s->s.h.parallelmode = s->s.h.errorres ? 1 : get_bits1(&s->gb);
s->s.h.framectxid = c = get_bits(&s->gb, 2);
if (s->s.h.keyframe || s->s.h.intraonly)
s->s.h.framectxid = 0; // BUG: libvpx ignores this field in keyframes
/* loopfilter header data */
if (s->s.h.keyframe || s->s.h.errorres || s->s.h.intraonly) {