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Code Issues Releases Activity

Prevent DAUD PCM encoder from fetching values outside of ff_reverse[] array bounds when input sample values are < 0.

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Originally committed as revision 14658 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Peter Ross 2008-08-07 08:16:42 +00:00
parent bc02bc8686
commit 13dbd9b705
1 changed files with 1 additions and 1 deletions
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2
libavcodec/pcm.c
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@ -209,7 +209,7 @@ static int pcm_encode_frame(AVCodecContext *avctx,
break;
case CODEC_ID_PCM_S24DAUD:
for(;n>0;n--) {
uint32_t tmp = ff_reverse[*samples >> 8] +
uint32_t tmp = ff_reverse[(*samples >> 8) & 0xff] +
(ff_reverse[*samples & 0xff] << 8);
tmp <<= 4; // sync flags would go here
bytestream_put_be24(&dst, tmp);