[FFmpeg-cvslog] vp8dec: reset loopfilter delta values at keyframes

[Sami Pietilä]

ffmpeg | branch: master | Sami Pietilä <samipietila at google.com> | Sat Oct 13 12:43:24 2012 +0200| [3cc0252732513dc7411093935821b1eb6416a9a6] | committer: Michael Niedermayer

vp8dec: reset loopfilter delta values at keyframes

while testing a VP8 encoder I found a mismatch between FFMPEG and libvpx
VP8 decoders. The reason for this mismatch is that FFMPEG doesn't reset
loopfilter delta values at keyframes. Patch that fixes the issue is below.
I've verified that the output of ffmpeg after this patch matches libvpx.

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3cc0252732513dc7411093935821b1eb6416a9a6
---

 libavcodec/vp8.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/vp8.c b/libavcodec/vp8.c
index 3f07b90..0bb5495 100644
--- a/libavcodec/vp8.c
+++ b/libavcodec/vp8.c
@@ -353,6 +353,7 @@ static int decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size)
         memcpy(s->prob->pred8x8c , vp8_pred8x8c_prob_inter , sizeof(s->prob->pred8x8c));
         memcpy(s->prob->mvc      , vp8_mv_default_prob     , sizeof(s->prob->mvc));
         memset(&s->segmentation, 0, sizeof(s->segmentation));
+        memset(&s->lf_delta, 0, sizeof(s->lf_delta));
     }
 
     ff_vp56_init_range_decoder(c, buf, header_size);