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swr: check that there is enough information to do rematrixing when needed. 

Fixes assertion failure.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-03-23 12:10:08 +01:00
parent 2e909b3c77
commit ae03b2141e
1 changed files with 5 additions and 0 deletions
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5
libswresample/swresample.c
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@ -226,6 +226,11 @@ int swr_init(struct SwrContext *s){
return -1;
}
if ((!s->out_ch_layout || !s->in_ch_layout) && s->used_ch_count != s->out.ch_count && !s->rematrix_custom) {
av_log(s, AV_LOG_ERROR, "Rematrix is needed but there is not enough information to do it\n");
return -1;
}
av_assert0(s->used_ch_count);
av_assert0(s->out.ch_count);
s->resample_first= RSC*s->out.ch_count/s->in.ch_count - RSC < s->out_sample_rate/(float)s-> in_sample_rate - 1.0;