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check for request_channels at codec init

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Originally committed as revision 11415 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Justin Ruggles 2008-01-05 15:22:53 +00:00
parent 6cd325c106
commit 95283c1701
1 changed files with 7 additions and 0 deletions
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7
libavcodec/ac3dec.c
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@ -312,6 +312,13 @@ static int ac3_decode_init(AVCodecContext *avctx)
s->mul_bias = 32767.0f;
}
/* allow downmixing to stereo or mono */
if (avctx->channels > 0 && avctx->request_channels > 0 &&
avctx->request_channels < avctx->channels &&
avctx->request_channels <= 2) {
avctx->channels = avctx->request_channels;
}
return 0;
}