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Make dequantization equation use less registers on some CPUs.

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Originally committed as revision 23391 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Maxim Poliakovski 2010-05-30 23:57:51 +00:00
parent 25e20240b1
commit 274793de6e
1 changed files with 1 additions and 1 deletions
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libavcodec/ivi_common.c
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@ -416,7 +416,7 @@ int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
q = (base_tab[pos] * scale_tab[quant]) >> 8;
if (q > 1)
val = val * q + FFSIGN(val) * ((q >> 1) - (q & 1));
val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);
trvec[pos] = val;
col_flags[pos & col_mask] |= !!val; /* track columns containing non-zero coeffs */
}// while