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MIPS: MIPS32r1: Add optimization for GetResidualCost

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+ reorganize the cost-evaluation code by moving some functions
to cost.h/cost.c and exposing VP8Residual

Change-Id: Id976299b5d4484e65da8bed31b3d2eb9cb4c1f7d
This commit is contained in:
Slobodan Prijic
2014-02-25 16:22:18 +01:00
committed by skal
parent f0a1f3cd51
commit 2b1b4d5ae9
5 changed files with 398 additions and 246 deletions
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26
src/enc/cost.h
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@ -14,12 +14,32 @@
#ifndef WEBP_ENC_COST_H_
#define WEBP_ENC_COST_H_
#include <assert.h>
#include <stdlib.h>
#include "./vp8enci.h"
#ifdef __cplusplus
extern "C" {
#endif
// On-the-fly info about the current set of residuals. Handy to avoid
// passing zillions of params.
typedef struct {
int first;
int last;
const int16_t* coeffs;
int coeff_type;
ProbaArray* prob;
StatsArray* stats;
CostArray* cost;
} VP8Residual;
void VP8InitResidual(int first, int coeff_type,
VP8Encoder* const enc, VP8Residual* const res);
void VP8SetResidualCoeffs(const int16_t* const coeffs, VP8Residual* const res);
int VP8RecordCoeffs(int ctx, const VP8Residual* const res);
// approximate cost per level:
extern const uint16_t VP8LevelFixedCosts[MAX_LEVEL + 1];
extern const uint16_t VP8EntropyCost[256]; // 8bit fixed-point log(p)
@ -29,6 +49,12 @@ static WEBP_INLINE int VP8BitCost(int bit, uint8_t proba) {
return !bit ? VP8EntropyCost[proba] : VP8EntropyCost[255 - proba];
}
// Cost calculation function.
typedef int (*VP8GetResidualCostFunc)(int ctx0, const VP8Residual* const res);
extern VP8GetResidualCostFunc VP8GetResidualCost;
extern void VP8GetResidualCostInit(void); // must be called first
// Level cost calculations
extern const uint16_t VP8LevelCodes[MAX_VARIABLE_LEVEL][2];
void VP8CalculateLevelCosts(VP8Proba* const proba);