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SSE2 for inverse Mult(ARGB)Row and ApplyAlphaMultiply

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Change-Id: Iab5c0e4a4d2b31f86736a9b277e62b6e28c3d2b4
WebPMultRow: ~7x faster
WebPMultARGBRow: ~3x faster
ApplyAlphaMultiply: 60% faster
This commit is contained in:
Pascal Massimino
2014-09-11 07:58:42 +02:00
parent d84a8ffdf7
commit a6bb9b17d8
3 changed files with 147 additions and 5 deletions
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5
src/dsp/dsp.h
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@ -294,6 +294,11 @@ void WebPMultRows(uint8_t* ptr, int stride,
const uint8_t* alpha, int alpha_stride,
int width, int num_rows, int inverse);
// Plain-C versions, used as fallback by some implementations.
void WebPMultRowC(uint8_t* const ptr, const uint8_t* const alpha,
int width, int inverse);
void WebPMultARGBRowC(uint32_t* const ptr, int width, int inverse);
// To be called first before using the above.
void WebPInitAlphaProcessing(void);