From 3af91313983b54d76aadda0f80ef7fc72aa9d5cf Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Sun, 25 May 2008 15:23:03 +0000 Subject: [PATCH] add check for invalid channel mode when coupling is used Originally committed as revision 13381 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/ac3dec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c index 257687e..ae9f2ea 100644 --- 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); -- 2.7.4