[FFmpeg-devel] ZMBV Improved Motion Estimation
Jason Garrett-Glaser
darkshikari
Sun May 11 20:45:31 CEST 2008
> probably its that histogram is uint8_t and thus 256==0
I'm not sure if uint16_t is going to be slower or faster than uint8_t
or uint32_t.
Index: libavcodec/zmbvenc.c
===================================================================
--- libavcodec/zmbvenc.c (revision 13112)
+++ libavcodec/zmbvenc.c (working copy)
@@ -64,7 +64,7 @@
{
int sum = 0;
int i, j;
- uint8_t histogram[256]={0};
+ uint16_t histogram[256]={0};
for(j = 0; j < bh; j++){
for(i = 0; i < bw; i++)
@@ -76,7 +76,7 @@
for(i=1; i<256; i++)
sum+= score_tab[histogram[i]];
- return sum;
+ return sum + 256*bw*bh - histogram[0]*256;
}
/** Motion estimation function
Dark Shikari
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