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
This commit is contained in:
Justin Ruggles 2009-05-16 17:02:44 +00:00
parent 78ad664a7e
commit 1ac7d1ac50

View File

@ -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;
}