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aacdec: Fix SCE parity check. 

An unpaired SCE preceding a CPE only makes sense for front SCEs
preceding the first CPE.

Split from FFmpeg commit a8d67efa53

Signed-off-by: Alex Converse <alex.converse@gmail.com>
This commit is contained in:
Michael Niedermayer 2012-03-06 17:30:09 -08:00 committed by Alex Converse
parent d53fe096e4
commit 744dd1d356
1 changed files with 1 additions and 1 deletions
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2
libavcodec/aacdec.c
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@ -200,7 +200,7 @@ static int count_paired_channels(uint8_t (*layout_map)[3], int tags, int pos, in
break;
if (layout_map[i][0] == TYPE_CPE) {
if (sce_parity) {
if (pos == AAC_CHANNEL_FRONT || !first_cpe) {
if (pos == AAC_CHANNEL_FRONT && !first_cpe) {
sce_parity = 0;
} else {
return -1;