dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2025-07-16 13:59:51 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

Simplify backward refs calculation for low-effort.

Browse Source 
Simplify and speedup backward references for low-effort settings by evaluating
LZ77 references only. This change speeds up compression by 10-25% at lower
(q <= 25) quality range with a slight drop (0.2%) in the compression density.

Change-Id: Ibd6f03b1a062d8ab9191786c2a425e9132e4779f
This commit is contained in:
Vikas Arora
2015-01-27 09:35:32 -08:00
parent ec0d1be577
commit 4d6d7285b0
2 changed files with 33 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/enc/backward_references.h
View File

@ -192,7 +192,7 @@ static WEBP_INLINE void VP8LRefsCursorNext(VP8LRefsCursor* const c) {
// refs[0] or refs[1].
VP8LBackwardRefs* VP8LGetBackwardReferences(
int width, int height, const uint32_t* const argb, int quality,
int low_effort, int* cache_bits, VP8LHashChain* const hash_chain,
int low_effort, int* const cache_bits, VP8LHashChain* const hash_chain,
VP8LBackwardRefs refs[2]);
#ifdef __cplusplus