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alsdec: only adapt order for positive max_order 

For max_order = 0 the clipping range is invalid. (amin = 2, amax = 1)

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 58d605ee9b)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Andreas Cadhalpun 2015-04-22 16:03:41 +02:00 committed by Michael Niedermayer
parent ee3d4e2b09
commit b16a6c6709
1 changed files with 1 additions and 1 deletions
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2
libavcodec/alsdec.c
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@ -682,7 +682,7 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
if (!sconf->rlslms) {
if (sconf->adapt_order) {
if (sconf->adapt_order && sconf->max_order) {
int opt_order_length = av_ceil_log2(av_clip((bd->block_length >> 3) - 1,
2, sconf->max_order + 1));
*bd->opt_order = get_bits(gb, opt_order_length);