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MIPS: dspr2: added optimization for function Average

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Change-Id: I7ca316bc3f5fbdaf8dcaf9a2d2227a5134bf4f63
This commit is contained in:
Djordje Pesut 2015-01-08 11:46:15 +01:00
parent 9422211d5f
commit 9241ecf45d
1 changed files with 50 additions and 0 deletions
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50
src/dsp/lossless_mips_dsp_r2.c
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@ -224,6 +224,50 @@ static WEBP_INLINE uint32_t Select(uint32_t a, uint32_t b, uint32_t c) {
return a;
}
static WEBP_INLINE uint32_t Average2(uint32_t a0, uint32_t a1) {
__asm__ volatile (
"adduh.qb %[a0], %[a0], %[a1] \n\t"
: [a0]"+r"(a0)
: [a1]"r"(a1)
);
return a0;
}
static WEBP_INLINE uint32_t Average3(uint32_t a0, uint32_t a1, uint32_t a2) {
return Average2(Average2(a0, a2), a1);
}
static WEBP_INLINE uint32_t Average4(uint32_t a0, uint32_t a1,
uint32_t a2, uint32_t a3) {
return Average2(Average2(a0, a1), Average2(a2, a3));
}
static uint32_t Predictor5(uint32_t left, const uint32_t* const top) {
return Average3(left, top[0], top[1]);
}
static uint32_t Predictor6(uint32_t left, const uint32_t* const top) {
return Average2(left, top[-1]);
}
static uint32_t Predictor7(uint32_t left, const uint32_t* const top) {
return Average2(left, top[0]);
}
static uint32_t Predictor8(uint32_t left, const uint32_t* const top) {
(void)left;
return Average2(top[-1], top[0]);
}
static uint32_t Predictor9(uint32_t left, const uint32_t* const top) {
(void)left;
return Average2(top[0], top[1]);
}
static uint32_t Predictor10(uint32_t left, const uint32_t* const top) {
return Average4(left, top[-1], top[0], top[1]);
}
static uint32_t Predictor11(uint32_t left, const uint32_t* const top) {
return Select(top[0], left, top[-1]);
}
@ -333,6 +377,12 @@ void VP8LDspInitMIPSdspR2(void) {
#if defined(WEBP_USE_MIPS_DSP_R2)
VP8LMapColor32b = MapARGB;
VP8LMapColor8b = MapAlpha;
VP8LPredictors[5] = Predictor5;
VP8LPredictors[6] = Predictor6;
VP8LPredictors[7] = Predictor7;
VP8LPredictors[8] = Predictor8;
VP8LPredictors[9] = Predictor9;
VP8LPredictors[10] = Predictor10;
VP8LPredictors[11] = Predictor11;
VP8LPredictors[12] = Predictor12;
VP8LPredictors[13] = Predictor13;