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Add progress hook granularity in lossless

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A WebPPicture instance is necessary to call WebPReportProgress() which
sets WebPPicture::error_code so as well use WebPEncodingSetError() to
record errors too, instead of functions returning a WebPEncodingError.
However there must be one WebPPicture instance per thread, with error
codes merged at sync time. A mutex could simplify that but it is not
the objective of this change.

https://groups.google.com/a/webmproject.org/g/webp-discuss/c/yOiP8APubgc/m/vCTvxl6ODgAJ

Change-Id: Ia1a8f9d1199202e1c88484ce719b0180a80447ce
This commit is contained in:
Yannis Guyon
2022-02-02 14:39:21 +01:00
parent 26139c7398
commit ec178f2c7f
9 changed files with 414 additions and 284 deletions
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12
src/enc/backward_references_enc.h
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@ -134,10 +134,11 @@ struct VP8LHashChain {
// Must be called first, to set size.
int VP8LHashChainInit(VP8LHashChain* const p, int size);
// Pre-compute the best matches for argb.
// Pre-compute the best matches for argb. pic and percent are for progress.
int VP8LHashChainFill(VP8LHashChain* const p, int quality,
const uint32_t* const argb, int xsize, int ysize,
int low_effort);
int low_effort, const WebPPicture* const pic,
int percent_range, int* const percent);
void VP8LHashChainClear(VP8LHashChain* const p); // release memory
static WEBP_INLINE int VP8LHashChainFindOffset(const VP8LHashChain* const p,
@ -227,11 +228,14 @@ enum VP8LLZ77Type {
// VP8LBackwardRefs is put in the first element, the best value with no-cache in
// the second element.
// In both cases, the last element is used as temporary internally.
WebPEncodingError VP8LGetBackwardReferences(
// pic and percent are for progress.
// Returns false in case of error (stored in pic->error_code).
int VP8LGetBackwardReferences(
int width, int height, const uint32_t* const argb, int quality,
int low_effort, int lz77_types_to_try, int cache_bits_max, int do_no_cache,
const VP8LHashChain* const hash_chain, VP8LBackwardRefs* const refs,
int* const cache_bits_best);
int* const cache_bits_best, const WebPPicture* const pic, int percent_range,
int* const percent);
#ifdef __cplusplus
}