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wavpack: Don't shift minclip/maxclip 

Since we are clipping before we shift the values to
16 or 32 bits, we should not shift the min/max clip
values to compensate.

Fixes 8 and 24 bit lossy decoding.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Derek Buitenhuis 2012-02-23 10:55:35 -05:00 committed by Anton Khirnov
parent ba605cef79
commit 480b133e6f
1 changed files with 2 additions and 2 deletions
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4
libavcodec/wavpack.c
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@ -813,8 +813,8 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
s->hybrid = s->frame_flags & WV_HYBRID_MODE;
s->hybrid_bitrate = s->frame_flags & WV_HYBRID_BITRATE;
s->post_shift = bpp * 8 - orig_bpp + ((s->frame_flags >> 13) & 0x1f);
s->hybrid_maxclip = (( 1LL << (orig_bpp - 1)) - 1) >> s->post_shift;
s->hybrid_minclip = ((-1LL << (orig_bpp - 1))) >> s->post_shift;
s->hybrid_maxclip = (( 1LL << (orig_bpp - 1)) - 1);
s->hybrid_minclip = ((-1LL << (orig_bpp - 1)));
s->CRC = AV_RL32(buf); buf += 4;
if (wc->mkv_mode)
buf += 4; //skip block size;