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shorten: fix lossy decoding 

Closes #1299, #1300 and #1301.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2012-05-22 11:56:18 +00:00
parent 27127ebe6c
commit 672f8226bb
1 changed files with 1 additions and 1 deletions
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libavcodec/shorten.c
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@ -539,7 +539,7 @@ static int shorten_decode_frame(AVCodecContext *avctx, void *data,
sum += s->offset[channel][i];
coffset = sum / s->nmean;
if (s->version >= 2)
coffset >>= FFMIN(1, s->bitshift);
coffset = s->bitshift == 0 ? coffset : coffset >> s->bitshift - 1 >> 1;
}
/* decode samples for this channel */