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more stupid double subtractions

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Originally committed as revision 10155 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-08-20 22:26:49 +00:00
parent 49ca0e531a
commit f29bd6fa71
1 changed files with 2 additions and 2 deletions
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4
libavcodec/snow.h
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@ -165,11 +165,11 @@ static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, DWTELE
static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w){
for(; i<w; i++){
dst[i] = src[i] - (((-(ref[i] + ref[(i+1)])+W_BO) - 4 * src[i]) >> W_BS);
dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO-1 + 4 * src[i]) >> W_BS);
}
if(width&1){
dst[w] = src[w] - (((-2 * ref[w] + W_BO) - 4 * src[w]) >> W_BS);
dst[w] = src[w] + ((2 * ref[w] + W_BO-1 + 4 * src[w]) >> W_BS);
}
}