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sipr: fall back to setting mode based on bit_rate.

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Not all applications (e.g. MPlayer) set block_align, and
when using a different demuxer it might not even be
easily available.
So fall back to selecting mode based on bit rate as before
if block_align has not useful value.
It can't be worse than failing to decode completely.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This commit is contained in:
Reimar Döffinger 2012-01-05 21:01:56 +01:00
parent 96fc1f0733
commit 1d0d63052b
1 changed files with 4 additions and 1 deletions
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5
libavcodec/sipr.c
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@ -487,7 +487,10 @@ static av_cold int sipr_decoder_init(AVCodecContext * avctx)
case 37: ctx->mode = MODE_5k0; break;
default:
av_log(avctx, AV_LOG_ERROR, "Invalid block_align: %d\n", avctx->block_align);
return AVERROR(EINVAL);
if (avctx->bit_rate > 12200) ctx->mode = MODE_16k;
else if (avctx->bit_rate > 7500 ) ctx->mode = MODE_8k5;
else if (avctx->bit_rate > 5750 ) ctx->mode = MODE_6k5;
else ctx->mode = MODE_5k0;
}
av_log(avctx, AV_LOG_DEBUG, "Mode: %s\n", modes[ctx->mode].mode_name);