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Replace doubles by floats in lossless misc cost estimations.

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Doubles are slower and use more RAM for no benefit.

Change-Id: I05b313576f9b33388c7c39d7fed8de84170c3753
This commit is contained in:
Vincent Rabaud
2022-04-14 16:19:19 +02:00
parent 42888f6c7c
commit a19a25bb03
10 changed files with 154 additions and 160 deletions
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12
src/dsp/lossless_enc.c
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@ -402,7 +402,7 @@ static float FastLog2Slow_C(uint32_t v) {
// Compute the combined Shanon's entropy for distribution {X} and {X+Y}
static float CombinedShannonEntropy_C(const int X[256], const int Y[256]) {
int i;
double retval = 0.;
float retval = 0.f;
int sumX = 0, sumXY = 0;
for (i = 0; i < 256; ++i) {
const int x = X[i];
@ -418,7 +418,7 @@ static float CombinedShannonEntropy_C(const int X[256], const int Y[256]) {
}
}
retval += VP8LFastSLog2(sumX) + VP8LFastSLog2(sumXY);
return (float)retval;
return retval;
}
void VP8LBitEntropyInit(VP8LBitEntropy* const entropy) {
@ -636,17 +636,17 @@ void VP8LBundleColorMap_C(const uint8_t* const row, int width, int xbits,
//------------------------------------------------------------------------------
static double ExtraCost_C(const uint32_t* population, int length) {
static float ExtraCost_C(const uint32_t* population, int length) {
int i;
double cost = 0.;
float cost = 0.f;
for (i = 2; i < length - 2; ++i) cost += (i >> 1) * population[i + 2];
return cost;
}
static double ExtraCostCombined_C(const uint32_t* X, const uint32_t* Y,
static float ExtraCostCombined_C(const uint32_t* X, const uint32_t* Y,
int length) {
int i;
double cost = 0.;
float cost = 0.f;
for (i = 2; i < length - 2; ++i) {
const int xy = X[i + 2] + Y[i + 2];
cost += (i >> 1) * xy;