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Convert VP8LFastSLog2 to fixed point

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Speedups: 1% with '-lossless', 2% with '-lossless -q 100 -m6'

Change-Id: I1d79ea8e3e9e4bac7bcea4d7cbcc1bd56273988e
This commit is contained in:
Vincent Rabaud
2024-07-09 15:44:18 +02:00
parent 66408c2c7c
commit fb444b692b
7 changed files with 128 additions and 260 deletions
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6
src/dsp/lossless.h
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@ -185,8 +185,8 @@ extern VP8LPredictorAddSubFunc VP8LPredictorsSub_C[16];
typedef uint32_t (*VP8LCostFunc)(const uint32_t* population, int length);
typedef uint32_t (*VP8LCostCombinedFunc)(const uint32_t* X, const uint32_t* Y,
int length);
typedef float (*VP8LCombinedShannonEntropyFunc)(const uint32_t X[256],
const uint32_t Y[256]);
typedef uint64_t (*VP8LCombinedShannonEntropyFunc)(const uint32_t X[256],
const uint32_t Y[256]);
extern VP8LCostFunc VP8LExtraCost;
extern VP8LCostCombinedFunc VP8LExtraCostCombined;
@ -198,7 +198,7 @@ typedef struct { // small struct to hold counters
} VP8LStreaks;
typedef struct { // small struct to hold bit entropy results
float entropy; // entropy
uint64_t entropy; // entropy
uint32_t sum; // sum of the population
int nonzeros; // number of non-zero elements in the population
uint32_t max_val; // maximum value in the population