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Refactor LZ77 handling in preparation for a new method.

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Change-Id: If305c328c8f508bd778d1af108e4eb979fbd2eca
This commit is contained in:
Vincent Rabaud
2017-06-07 15:13:35 +02:00
parent 67de68b5d9
commit a1779a017b
3 changed files with 83 additions and 57 deletions
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7
src/enc/backward_references_enc.h
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@ -213,6 +213,11 @@ static WEBP_INLINE void VP8LRefsCursorNext(VP8LRefsCursor* const c) {
// -----------------------------------------------------------------------------
// Main entry points
enum VP8LLZ77Type {
kLZ77Standard = 1,
kLZ77RLE = 2,
};
// Evaluates best possible backward references for specified quality.
// The input cache_bits to 'VP8LGetBackwardReferences' sets the maximum cache
// bits to use (passing 0 implies disabling the local color cache).
@ -221,7 +226,7 @@ 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* const cache_bits,
int low_effort, int lz77_types_to_try, int* const cache_bits,
const VP8LHashChain* const hash_chain, VP8LBackwardRefs* const refs_tmp1,
VP8LBackwardRefs* const refs_tmp2);