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create a separate libwebpdsp under src/dsp

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Gathers all DSP-related function (and SSE2 implementations).
Clean-up some unwanted symbolic dependencies so that webp_encode,
webp_decode and webp_dsp are truly independent libraries.

+ opportunistic clean-up:
  * remove unneeded VP8DspInitTables(), now integrated in VP8DspInit()
  * make consistent use of VP8GetCPUInfo() in the various DspInit() funcs
  * change OUT macro to DST
This commit is contained in:
Pascal Massimino
2011-09-02 21:30:08 +00:00
committed by James Zern
parent ebeb412aa5
commit e06ac0887f
28 changed files with 2217 additions and 500 deletions
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57
src/enc/vp8enci.h
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@ -14,6 +14,7 @@
#include "string.h" // for memcpy()
#include "../webp/encode.h"
#include "../dsp/dsp.h"
#include "bit_writer.h"
#if defined(__cplusplus) || defined(c_plusplus)
@ -211,7 +212,7 @@ typedef struct {
uint8_t alpha_; // quantization-susceptibility
} VP8MBInfo;
typedef struct {
typedef struct VP8Matrix {
uint16_t q_[16]; // quantizer steps
uint16_t iq_[16]; // reciprocals, fixed point.
uint16_t bias_[16]; // rounding bias
@ -421,12 +422,8 @@ int VP8StatLoop(VP8Encoder* const enc);
// in webpenc.c
// Assign an error code to a picture. Return false for convenience.
int WebPEncodingSetError(WebPPicture* const pic, WebPEncodingError error);
// in analysis.c
// Compute susceptibility based on DCT-coeff histograms:
// the higher, the "easier" the macroblock is to compress.
typedef int (*VP8CHisto)(const uint8_t* ref, const uint8_t* pred,
int start_block, int end_block);
extern VP8CHisto VP8CollectHistogram;
// Main analysis loop. Decides the segmentations and complexity.
// Assigns a first guess for Intra16 and uvmode_ prediction modes.
int VP8EncAnalyze(VP8Encoder* const enc);
@ -449,54 +446,6 @@ void VP8EncCodeLayerBlock(VP8EncIterator* it); // code one more macroblock
int VP8EncFinishLayer(VP8Encoder* const enc); // finalize coding
void VP8EncDeleteLayer(VP8Encoder* enc); // reclaim memory
// in dsp.c
int VP8GetAlpha(const int histo[MAX_COEFF_THRESH + 1]);
// Transforms
// VP8Idct: Does one of two inverse transforms. If do_two is set, the transforms
// will be done for (ref, in, dst) and (ref + 4, in + 16, dst + 4).
typedef void (*VP8Idct)(const uint8_t* ref, const int16_t* in, uint8_t* dst,
int do_two);
typedef void (*VP8Fdct)(const uint8_t* src, const uint8_t* ref, int16_t* out);
typedef void (*VP8WHT)(const int16_t* in, int16_t* out);
extern VP8Idct VP8ITransform;
extern VP8Fdct VP8FTransform;
extern VP8WHT VP8ITransformWHT;
extern VP8WHT VP8FTransformWHT;
// Predictions
// *dst is the destination block. *top, *top_right and *left can be NULL.
typedef void (*VP8IntraPreds)(uint8_t *dst, const uint8_t* left,
const uint8_t* top);
typedef void (*VP8Intra4Preds)(uint8_t *dst, const uint8_t* top);
extern VP8Intra4Preds VP8EncPredLuma4;
extern VP8IntraPreds VP8EncPredLuma16;
extern VP8IntraPreds VP8EncPredChroma8;
typedef int (*VP8Metric)(const uint8_t* pix, const uint8_t* ref);
extern VP8Metric VP8SSE16x16, VP8SSE16x8, VP8SSE8x8, VP8SSE4x4;
typedef int (*VP8WMetric)(const uint8_t* pix, const uint8_t* ref,
const uint16_t* const weights);
extern VP8WMetric VP8TDisto4x4, VP8TDisto16x16;
typedef void (*VP8BlockCopy)(const uint8_t* src, uint8_t* dst);
extern VP8BlockCopy VP8Copy4x4;
extern VP8BlockCopy VP8Copy8x8;
extern VP8BlockCopy VP8Copy16x16;
// Quantization
typedef int (*VP8QuantizeBlock)(int16_t in[16], int16_t out[16],
int n, const VP8Matrix* const mtx);
extern VP8QuantizeBlock VP8EncQuantizeBlock;
typedef enum {
kSSE2,
kSSE3
} CPUFeature;
// returns true if the CPU supports the feature.
typedef int (*VP8CPUInfo)(CPUFeature feature);
extern VP8CPUInfo VP8EncGetCPUInfo;
void VP8EncDspInit(void); // must be called before using any of the above
// in filter.c
extern void VP8InitFilter(VP8EncIterator* const it);
extern void VP8StoreFilterStats(VP8EncIterator* const it);