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
16 years ago · 1ac7d1ac50
parent 78ad664a7e
commit 1ac7d1ac50
1 changed files with 2 additions and 2 deletions
--- 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;
            }