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MIPS: dspr2: added optimization for function TransformColor_C

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Change-Id: Idbf5cecf6775340585b0fd7e6ddcb29c2fcbea36
This commit is contained in:
Djordje Pesut 2014-11-28 10:54:56 +01:00
parent c6d0f9e758
commit 1b66bbe998
1 changed files with 88 additions and 0 deletions
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88
src/dsp/lossless_mips_dsp_r2.c
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@ -236,6 +236,93 @@ static uint32_t Predictor13(uint32_t left, const uint32_t* const top) {
return ClampedAddSubtractHalf(left, top[0], top[-1]);
}
static WEBP_INLINE uint32_t ColorTransformDelta(int8_t color_pred,
int8_t color) {
return (uint32_t)((int)(color_pred) * color) >> 5;
}
static void TransformColor(const VP8LMultipliers* const m, uint32_t* data,
int num_pixels) {
int temp0, temp1, temp2, temp3, temp4, temp5;
uint32_t argb, argb1, new_red, new_red1;
const uint32_t G_to_R = m->green_to_red_;
const uint32_t G_to_B = m->green_to_blue_;
const uint32_t R_to_B = m->red_to_blue_;
uint32_t* const p_loop_end = data + (num_pixels & ~1);
__asm__ volatile (
".set push \n\t"
".set noreorder \n\t"
"beq %[data], %[p_loop_end], 1f \n\t"
" nop \n\t"
"replv.ph %[temp0], %[G_to_R] \n\t"
"replv.ph %[temp1], %[G_to_B] \n\t"
"replv.ph %[temp2], %[R_to_B] \n\t"
"shll.ph %[temp0], %[temp0], 8 \n\t"
"shll.ph %[temp1], %[temp1], 8 \n\t"
"shll.ph %[temp2], %[temp2], 8 \n\t"
"shra.ph %[temp0], %[temp0], 8 \n\t"
"shra.ph %[temp1], %[temp1], 8 \n\t"
"shra.ph %[temp2], %[temp2], 8 \n\t"
"0: \n\t"
"lw %[argb], 0(%[data]) \n\t"
"lw %[argb1], 4(%[data]) \n\t"
"lhu %[new_red], 2(%[data]) \n\t"
"lhu %[new_red1], 6(%[data]) \n\t"
"precrq.qb.ph %[temp3], %[argb], %[argb1] \n\t"
"precr.qb.ph %[temp4], %[argb], %[argb1] \n\t"
"preceu.ph.qbra %[temp3], %[temp3] \n\t"
"preceu.ph.qbla %[temp4], %[temp4] \n\t"
"shll.ph %[temp3], %[temp3], 8 \n\t"
"shll.ph %[temp4], %[temp4], 8 \n\t"
"shra.ph %[temp3], %[temp3], 8 \n\t"
"shra.ph %[temp4], %[temp4], 8 \n\t"
"mul.ph %[temp5], %[temp3], %[temp0] \n\t"
"mul.ph %[temp3], %[temp3], %[temp1] \n\t"
"mul.ph %[temp4], %[temp4], %[temp2] \n\t"
"addiu %[data], %[data], 8 \n\t"
"ins %[new_red1], %[new_red], 16, 16 \n\t"
"ins %[argb1], %[argb], 16, 16 \n\t"
"shra.ph %[temp5], %[temp5], 5 \n\t"
"shra.ph %[temp3], %[temp3], 5 \n\t"
"shra.ph %[temp4], %[temp4], 5 \n\t"
"subu.ph %[new_red1], %[new_red1], %[temp5] \n\t"
"subu.ph %[argb1], %[argb1], %[temp3] \n\t"
"preceu.ph.qbra %[temp5], %[new_red1] \n\t"
"subu.ph %[argb1], %[argb1], %[temp4] \n\t"
"preceu.ph.qbra %[temp3], %[argb1] \n\t"
"sb %[temp5], -2(%[data]) \n\t"
"sb %[temp3], -4(%[data]) \n\t"
"sra %[temp5], %[temp5], 16 \n\t"
"sra %[temp3], %[temp3], 16 \n\t"
"sb %[temp5], -6(%[data]) \n\t"
"bne %[data], %[p_loop_end], 0b \n\t"
" sb %[temp3], -8(%[data]) \n\t"
"1: \n\t"
".set pop \n\t"
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
[new_red1]"=&r"(new_red1), [new_red]"=&r"(new_red),
[argb]"=&r"(argb), [argb1]"=&r"(argb1), [data]"+&r"(data)
: [G_to_R]"r"(G_to_R), [R_to_B]"r"(R_to_B),
[G_to_B]"r"(G_to_B), [p_loop_end]"r"(p_loop_end)
: "memory", "hi", "lo"
);
if (num_pixels & 1) {
const uint32_t argb_ = data[0];
const uint32_t green = argb_ >> 8;
const uint32_t red = argb_ >> 16;
uint32_t new_blue = argb_;
new_red = red;
new_red -= ColorTransformDelta(m->green_to_red_, green);
new_red &= 0xff;
new_blue -= ColorTransformDelta(m->green_to_blue_, green);
new_blue -= ColorTransformDelta(m->red_to_blue_, red);
new_blue &= 0xff;
data[0] = (argb_ & 0xff00ff00u) | (new_red << 16) | (new_blue);
}
}
#endif // WEBP_USE_MIPS_DSP_R2
//------------------------------------------------------------------------------
@ -250,6 +337,7 @@ void VP8LDspInitMIPSdspR2(void) {
VP8LPredictors[12] = Predictor12;
VP8LPredictors[13] = Predictor13;
VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed;
VP8LTransformColor = TransformColor;
#endif // WEBP_USE_MIPS_DSP_R2
}