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add check for invalid channel mode when coupling is used
author
Justin Ruggles
<justin.ruggles@gmail.com>
Sun, 25 May 2008 15:23:03 +0000
(15:23 +0000)
committer
Justin Ruggles
<justin.ruggles@gmail.com>
Sun, 25 May 2008 15:23:03 +0000
(15:23 +0000)
Originally committed as revision 13381 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavcodec/ac3dec.c
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diff --git
a/libavcodec/ac3dec.c
b/libavcodec/ac3dec.c
index
257687e
..
ae9f2ea
100644
(file)
--- a/
libavcodec/ac3dec.c
+++ b/
libavcodec/ac3dec.c
@@
-818,6
+818,11
@@
static int ac3_parse_audio_block(AC3DecodeContext *s, int blk)
/* coupling in use */
int cpl_begin_freq, cpl_end_freq;
+ if (channel_mode < AC3_CHMODE_STEREO) {
+ av_log(s->avctx, AV_LOG_ERROR, "coupling not allowed in mono or dual-mono\n");
+ return -1;
+ }
+
/* determine which channels are coupled */
for (ch = 1; ch <= fbw_channels; ch++)
s->channel_in_cpl[ch] = get_bits1(gbc);