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Don't allocate VP8LHashChain, but treat like automatic object

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the unique instance of VP8LHashChain (1MB size corresponding to hash_to_first_index_)
is now wholy part of VP8LEncoder, instead of maintaining the pointer to VP8LHashChain
in the encoder.

Change-Id: Ib6fe52019fdd211fbbc78dc0ba731a4af0728677
This commit is contained in:
skal 2014-04-30 14:10:48 -07:00
parent b7f19b8311
commit d3bcf72bf5
4 changed files with 39 additions and 38 deletions
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41
src/enc/backward_references.c
View File

@ -112,12 +112,7 @@ int VP8LBackwardRefsCopy(const VP8LBackwardRefs* const src,
// -----------------------------------------------------------------------------
// Hash chains
static WEBP_INLINE uint64_t GetPixPairHash64(const uint32_t* const argb) {
uint64_t key = ((uint64_t)(argb[1]) << 32) | argb[0];
key = (key * HASH_MULTIPLIER) >> (64 - HASH_BITS);
return key;
}
// initialize as empty
static void HashChainInit(VP8LHashChain* const p) {
int i;
assert(p != NULL);
@ -129,26 +124,30 @@ static void HashChainInit(VP8LHashChain* const p) {
}
}
VP8LHashChain* VP8LHashChainNew(int size) {
VP8LHashChain* const p = (VP8LHashChain*)WebPSafeMalloc(1ULL, sizeof(*p));
if (p == NULL) {
return NULL;
}
int VP8LHashChainInit(VP8LHashChain* const p, int size) {
assert(p->size_ == 0);
assert(p->chain_ == NULL);
assert(size > 0);
p->chain_ = (int*)WebPSafeMalloc(size, sizeof(*p->chain_));
if (p->chain_ == NULL) {
WebPSafeFree(p);
return NULL;
}
if (p->chain_ == NULL) return 0;
p->size_ = size;
HashChainInit(p);
return p;
return 1;
}
void VP8LHashChainDelete(VP8LHashChain* const p) {
if (p != NULL) {
WebPSafeFree(p->chain_);
WebPSafeFree(p);
}
void VP8LHashChainClear(VP8LHashChain* const p) {
assert(p != NULL);
WebPSafeFree(p->chain_);
p->size_ = 0;
p->chain_ = NULL;
}
// -----------------------------------------------------------------------------
static WEBP_INLINE uint64_t GetPixPairHash64(const uint32_t* const argb) {
uint64_t key = ((uint64_t)argb[1] << 32) | argb[0];
key = (key * HASH_MULTIPLIER) >> (64 - HASH_BITS);
return key;
}
// Insertion of two pixels at a time.

5
src/enc/backward_references.h
View File

@ -130,8 +130,9 @@ struct VP8LHashChain {
int size_;
};
VP8LHashChain* VP8LHashChainNew(int size);
void VP8LHashChainDelete(VP8LHashChain* const p);
// Must be called first, to set size.
int VP8LHashChainInit(VP8LHashChain* const p, int size);
void VP8LHashChainClear(VP8LHashChain* const p); // release memory
typedef struct VP8LBackwardRefs VP8LBackwardRefs;
struct VP8LBackwardRefs {

17
src/enc/vp8l.c
View File

@ -167,8 +167,7 @@ static int AnalyzeAndInit(VP8LEncoder* const enc, WebPImageHint image_hint) {
}
}
}
enc->hash_chain_ = VP8LHashChainNew(pix_cnt);
if (enc->hash_chain_ == NULL) return 0;
if (!VP8LHashChainInit(&enc->hash_chain_, pix_cnt)) return 0;
enc->refs_[0] = VP8LBackwardRefsNew(pix_cnt);
enc->refs_[1] = VP8LBackwardRefsNew(pix_cnt);
@ -739,7 +738,8 @@ static int ApplyPredictFilter(const VP8LEncoder* const enc,
VP8LWriteBits(bw, 2, PREDICTOR_TRANSFORM);
assert(pred_bits >= 2);
VP8LWriteBits(bw, 3, pred_bits - 2);
if (!EncodeImageNoHuffman(bw, enc->transform_data_, enc->hash_chain_,
if (!EncodeImageNoHuffman(bw, enc->transform_data_,
(VP8LHashChain*)&enc->hash_chain_,
enc->refs_, transform_width, transform_height,
quality)) {
return 0;
@ -760,7 +760,8 @@ static int ApplyCrossColorFilter(const VP8LEncoder* const enc,
VP8LWriteBits(bw, 2, CROSS_COLOR_TRANSFORM);
assert(ccolor_transform_bits >= 2);
VP8LWriteBits(bw, 3, ccolor_transform_bits - 2);
if (!EncodeImageNoHuffman(bw, enc->transform_data_, enc->hash_chain_,
if (!EncodeImageNoHuffman(bw, enc->transform_data_,
(VP8LHashChain*)&enc->hash_chain_,
enc->refs_, transform_width, transform_height,
quality)) {
return 0;
@ -960,7 +961,7 @@ static WebPEncodingError EncodePalette(VP8LBitWriter* const bw,
for (i = palette_size - 1; i >= 1; --i) {
palette[i] = VP8LSubPixels(palette[i], palette[i - 1]);
}
if (!EncodeImageNoHuffman(bw, palette, enc->hash_chain_, enc->refs_,
if (!EncodeImageNoHuffman(bw, palette, &enc->hash_chain_, enc->refs_,
palette_size, 1, quality)) {
err = VP8_ENC_ERROR_INVALID_CONFIGURATION;
goto Error;
@ -1027,7 +1028,7 @@ static VP8LEncoder* VP8LEncoderNew(const WebPConfig* const config,
static void VP8LEncoderDelete(VP8LEncoder* enc) {
if (enc != NULL) {
VP8LHashChainDelete(enc->hash_chain_);
VP8LHashChainClear(&enc->hash_chain_);
VP8LBackwardRefsDelete(enc->refs_[0]);
VP8LBackwardRefsDelete(enc->refs_[1]);
WebPSafeFree(enc->argb_);
@ -1112,7 +1113,7 @@ WebPEncodingError VP8LEncodeStream(const WebPConfig* const config,
if (enc->cache_bits_ > 0) {
if (!VP8LCalculateEstimateForCacheSize(enc->argb_, enc->current_width_,
height, quality, enc->hash_chain_,
height, quality, &enc->hash_chain_,
enc->refs_[0], &enc->cache_bits_)) {
err = VP8_ENC_ERROR_INVALID_CONFIGURATION;
goto Error;
@ -1122,7 +1123,7 @@ WebPEncodingError VP8LEncodeStream(const WebPConfig* const config,
// ---------------------------------------------------------------------------
// Encode and write the transformed image.
if (!EncodeImageInternal(bw, enc->argb_, enc->hash_chain_, enc->refs_,
if (!EncodeImageInternal(bw, enc->argb_, &enc->hash_chain_, enc->refs_,
enc->current_width_, height, quality,
enc->cache_bits_, enc->histo_bits_)) {
err = VP8_ENC_ERROR_OUT_OF_MEMORY;

14
src/enc/vp8li.h
View File

@ -14,6 +14,7 @@
#ifndef WEBP_ENC_VP8LI_H_
#define WEBP_ENC_VP8LI_H_
#include "./backward_references.h"
#include "./histogram.h"
#include "../utils/bit_writer.h"
#include "../webp/encode.h"
@ -23,8 +24,6 @@
extern "C" {
#endif
struct VP8LHashChain; // Defined in backward_references.h
typedef struct {
const WebPConfig* config_; // user configuration and parameters
const WebPPicture* pic_; // input picture.
@ -35,11 +34,6 @@ typedef struct {
uint32_t* transform_data_; // Scratch memory for transform data.
int current_width_; // Corresponds to packed image width.
struct VP8LHashChain* hash_chain_; // HashChain data for constructing
// backward references.
struct VP8LBackwardRefs* refs_[2]; // Backward Refs array corresponding to
// LZ77 & RLE coding.
// Encoding parameters derived from quality parameter.
int histo_bits_;
int transform_bits_;
@ -52,6 +46,12 @@ typedef struct {
int use_palette_;
int palette_size_;
uint32_t palette_[MAX_PALETTE_SIZE];
// Some 'scratch' (potentially large) objects.
struct VP8LBackwardRefs* refs_[2]; // Backward Refs array corresponding to
// LZ77 & RLE coding.
VP8LHashChain hash_chain_; // HashChain data for constructing
// backward references.
} VP8LEncoder;
//------------------------------------------------------------------------------