dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2025-07-16 05:49:51 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

Use the plane code and not the distance when computing statistics.

Browse Source 
As backward references use the plane code when checking the cost
of a distance, statistics used to compute the cost should use it too.
This provides a small compression improvement at no speed cost.

Change-Id: Icade150929ee39ef6dc0d8b1fc85973086ecf41d
This commit is contained in:
Vincent Rabaud
2017-06-01 17:08:43 +02:00
parent b903b80c30
commit f209a5481e
3 changed files with 26 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/enc/histogram_enc.h
View File

@ -90,7 +90,9 @@ VP8LHistogram* VP8LAllocateHistogram(int cache_bits);
// Accumulate a token 'v' into a histogram.
void VP8LHistogramAddSinglePixOrCopy(VP8LHistogram* const histo,
const PixOrCopy* const v);
const PixOrCopy* const v,
int (*const distance_modifier)(int, int),
int distance_modifier_arg0);
static WEBP_INLINE int VP8LHistogramNumCodes(int palette_code_bits) {
return NUM_LITERAL_CODES + NUM_LENGTH_CODES +