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MIPS: MIPS32r1: Added optimizations for ExtraCost functions.

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ExtraCost and ExtraCostCombined

Change-Id: I7eceb9ce2807296c6b43b974e4216879ddcd79f2
This commit is contained in:
Djordje Pesut
2014-04-15 12:55:20 +02:00
committed by skal
parent a8fe8ce231
commit 4ae0533f39
4 changed files with 144 additions and 28 deletions
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24
src/dsp/lossless.c
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@ -1458,6 +1458,24 @@ void VP8LBundleColorMap(const uint8_t* const row, int width,
}
}
static double ExtraCost(const int* const population, int length) {
int i;
double cost = 0.;
for (i = 2; i < length - 2; ++i) cost += (i >> 1) * population[i + 2];
return cost;
}
static double ExtraCostCombined(const int* const X, const int* const Y,
int length) {
int i;
double cost = 0.;
for (i = 2; i < length - 2; ++i) {
const int xy = X[i + 2] + Y[i + 2];
cost += (i >> 1) * xy;
}
return cost;
}
//------------------------------------------------------------------------------
VP8LProcessBlueAndRedFunc VP8LSubtractGreenFromBlueAndRed;
@ -1476,6 +1494,9 @@ VP8LConvertFunc VP8LConvertBGRAToBGR;
VP8LFastLog2SlowFunc VP8LFastLog2Slow;
VP8LFastLog2SlowFunc VP8LFastSLog2Slow;
VP8LCostFunc VP8LExtraCost;
VP8LCostCombinedFunc VP8LExtraCostCombined;
extern void VP8LDspInitSSE2(void);
extern void VP8LDspInitNEON(void);
extern void VP8LDspInitMIPS32(void);
@ -1498,6 +1519,9 @@ void VP8LDspInit(void) {
VP8LFastLog2Slow = FastLog2Slow;
VP8LFastSLog2Slow = FastSLog2Slow;
VP8LExtraCost = ExtraCost;
VP8LExtraCostCombined = ExtraCostCombined;
// If defined, use CPUInfo() to overwrite some pointers with faster versions.
if (VP8GetCPUInfo != NULL) {
#if defined(WEBP_USE_SSE2)