RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-03-08 13:38:07 +00:00
Code Issues Projects Releases Wiki Activity

Make dequantization equation use less registers on some CPUs.

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/ivi_common.c
View File

@ -416,7 +416,7 @@ int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
q = (base_tab[pos] * scale_tab[quant]) >> 8; q = (base_tab[pos] * scale_tab[quant]) >> 8;
if (q > 1) if (q > 1)
val = val * q + FFSIGN(val) * ((q >> 1) - (q & 1)); val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);
trvec[pos] = val; trvec[pos] = val;
col_flags[pos & col_mask] |= !!val; /* track columns containing non-zero coeffs */ col_flags[pos & col_mask] |= !!val; /* track columns containing non-zero coeffs */
}// while }// while