From 1ac7d1ac50291cf9b4f2de0c8224bbd2eb05ece5 Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Sat, 16 May 2009 17:02:44 +0000
Subject: [PATCH] ac3dec: fix coupling range check. the start subband must be
less than the end subband.
Originally committed as revision 18857 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/ac3dec.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index 7d9d0142df2..bc39fb35b9a 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -872,8 +872,8 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
/* TODO: modify coupling end freq if spectral extension is used */
cpl_start_subband = get_bits(gbc, 4);
cpl_end_subband = get_bits(gbc, 4) + 3;
- if (cpl_start_subband > cpl_end_subband) {
- av_log(s->avctx, AV_LOG_ERROR, "invalid coupling range (%d > %d)\n",
+ if (cpl_start_subband >= cpl_end_subband) {
+ av_log(s->avctx, AV_LOG_ERROR, "invalid coupling range (%d >= %d)\n",
cpl_start_subband, cpl_end_subband);
return -1;
}
--
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