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lswr: channel_map requires input conversion.

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channel_map is applied between in and postin.
Without this test, if the input format is an acceptable internal format,
the in->postin conversion is skipped. In the best case,
it ignores channel_map, in the worst case it causes an assert failure
if the number of channels is changed by the map.
This commit is contained in:
Nicolas George 2012-07-16 14:18:19 +02:00
parent 81dd908c6e
commit 1d903a5ee4
1 changed files with 1 additions and 1 deletions
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2
libswresample/swresample.c
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@ -542,7 +542,7 @@ static int swr_convert_internal(struct SwrContext *s, AudioData *out, int out_co
preout_tmp= s->preout;
preout= &preout_tmp;
if(s->int_sample_fmt == s-> in_sample_fmt && s->in.planar)
if(s->int_sample_fmt == s-> in_sample_fmt && s->in.planar && !s->channel_map)
postin= in;
if(s->resample_first ? !s->resample : !s->rematrix)