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avcodec/adpcm: fix sample count for stereo SBPRO3

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Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f9b9902ed90_7462_new_alaw.voc
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-15 01:28:37 +01:00
parent 05fac0b45b
commit 785dc14654
1 changed files with 1 additions and 1 deletions
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2
libavcodec/adpcm.c
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@ -1310,7 +1310,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
byte & 0x0F, 4, 0); byte & 0x0F, 4, 0);
} }
} else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) { } else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) {
for (n = nb_samples / 3; n > 0; n--) { for (n = (nb_samples<<st) / 3; n > 0; n--) {
int byte = bytestream2_get_byteu(&gb); int byte = bytestream2_get_byteu(&gb);
*samples++ = adpcm_sbpro_expand_nibble(&c->status[0], *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
byte >> 5 , 3, 0); byte >> 5 , 3, 0);