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Prevent DAUD PCM encoder from fetching values outside of ff_reverse[] array bounds...
author
Peter Ross
<pross@xvid.org>
Thu, 7 Aug 2008 08:16:42 +0000
(08:16 +0000)
committer
Peter Ross
<pross@xvid.org>
Thu, 7 Aug 2008 08:16:42 +0000
(08:16 +0000)
Originally committed as revision 14658 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavcodec/pcm.c
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diff --git
a/libavcodec/pcm.c
b/libavcodec/pcm.c
index
d8b013b
..
3b61518
100644
(file)
--- a/
libavcodec/pcm.c
+++ b/
libavcodec/pcm.c
@@
-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);