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adjust output channels based on AVCodecContext.request_channels in AC3 parser 

Originally committed as revision 11412 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Justin Ruggles 2008-01-05 05:36:00 +00:00
parent 9bd005bdbc
commit f228eb737b
1 changed files with 7 additions and 0 deletions
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7
libavcodec/aac_ac3_parser.c
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@ -61,6 +61,13 @@ int ff_aac_ac3_parse(AVCodecParserContext *s1,
/* update codec info */
avctx->sample_rate = sample_rate;
avctx->channels = channels;
/* allow downmixing to mono or stereo for AC3 */
if(avctx->request_channels > 0 &&
avctx->request_channels < channels &&
avctx->request_channels <= 2 &&
avctx->codec_id == CODEC_ID_AC3) {
avctx->channels = avctx->request_channels;
}
avctx->bit_rate = bit_rate;
avctx->frame_size = samples;
}