[SCM] libav/experimental: h263enc: keep block_last_index always valid during advanced intra coding
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Aug 10 16:03:26 UTC 2014
The following commit has been merged in the experimental branch:
commit cd62c04d009b3baf7582556866a7029291b54573
Author: Janne Grunau <janne-libav at jannau.net>
Date: Tue Jun 10 20:50:13 2014 +0200
h263enc: keep block_last_index always valid during advanced intra coding
Prevents a triggered assert during fate-vsynth{1,2}-rv20 in
dct_unquantize_h263_intra_c().
diff --git a/libavcodec/ituh263enc.c b/libavcodec/ituh263enc.c
index cd4ed84..5f15b2f 100644
--- a/libavcodec/ituh263enc.c
+++ b/libavcodec/ituh263enc.c
@@ -566,10 +566,6 @@ void ff_h263_encode_mb(MpegEncContext * s,
else
level = (level - (scale>>1))/scale;
- /* AIC can change CBP */
- if (level == 0 && s->block_last_index[i] == 0)
- s->block_last_index[i] = -1;
-
if(!s->modified_quant){
if (level < -127)
level = -127;
@@ -592,7 +588,9 @@ void ff_h263_encode_mb(MpegEncContext * s,
/* Update AC/DC tables */
*dc_ptr[i] = rec_intradc[i];
- if (s->block_last_index[i] >= 0)
+ /* AIC can change CBP */
+ if (s->block_last_index[i] > 0 ||
+ (s->block_last_index[i] == 0 && level !=0))
cbp |= 1 << (5 - i);
}
}else{
--
Libav/FFmpeg packaging
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