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amrwbdec: set channels, channel_layout, and sample_rate

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Only mono 16kHz is supported.
This commit is contained in:
Justin Ruggles 2012-10-07 21:19:28 -04:00
parent b24a4449a5
commit ee0e9678e7
1 changed files with 10 additions and 1 deletions
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9
libavcodec/amrwbdec.c
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@ -24,6 +24,7 @@
* AMR wideband decoder
*/
#include "libavutil/audioconvert.h"
#include "libavutil/common.h"
#include "libavutil/lfg.h"
@ -90,6 +91,14 @@ static av_cold int amrwb_decode_init(AVCodecContext *avctx)
AMRWBContext *ctx = avctx->priv_data;
int i;
if (avctx->channels > 1) {
av_log_missing_feature(avctx, "multi-channel AMR", 0);
return AVERROR_PATCHWELCOME;
}
avctx->channels = 1;
avctx->channel_layout = AV_CH_LAYOUT_MONO;
avctx->sample_rate = 16000;
avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
av_lfg_init(&ctx->prng, 1);