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MIPS: dspr2: Added optimization for function FTransformWHT

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Change-Id: I918366cd1908304068c66da9965efb0aa63320cd
This commit is contained in:
Djordje Pesut 2015-01-19 10:15:13 +01:00
parent b8c2013512
commit da0912126b
1 changed files with 61 additions and 0 deletions
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61
src/dsp/enc_mips_dsp_r2.c
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@ -1321,6 +1321,66 @@ static int Quantize2Blocks(int16_t in[32], int16_t out[32],
#undef QUANTIZE_ONE
// macro for one horizontal pass in FTransformWHT
// temp0..temp7 holds tmp[0]..tmp[15]
// A, B, C, D - offset in bytes to load from in buffer
// TEMP0, TEMP1 - registers for corresponding tmp elements
#define HORIZONTAL_PASS_WHT(A, B, C, D, TEMP0, TEMP1) \
"lh %["#TEMP0"], "#A"(%[in]) \n\t" \
"lh %["#TEMP1"], "#B"(%[in]) \n\t" \
"lh %[temp8], "#C"(%[in]) \n\t" \
"lh %[temp9], "#D"(%[in]) \n\t" \
"ins %["#TEMP1"], %["#TEMP0"], 16, 16 \n\t" \
"ins %[temp9], %[temp8], 16, 16 \n\t" \
"subq.ph %[temp8], %["#TEMP1"], %[temp9] \n\t" \
"addq.ph %[temp9], %["#TEMP1"], %[temp9] \n\t" \
"precrq.ph.w %["#TEMP0"], %[temp8], %[temp9] \n\t" \
"append %[temp8], %[temp9], 16 \n\t" \
"subq.ph %["#TEMP1"], %["#TEMP0"], %[temp8] \n\t" \
"addq.ph %["#TEMP0"], %["#TEMP0"], %[temp8] \n\t" \
"rotr %["#TEMP1"], %["#TEMP1"], 16 \n\t"
// macro for one vertical pass in FTransformWHT
// temp0..temp7 holds tmp[0]..tmp[15]
// A, B, C, D - offsets in bytes to store to out buffer
// TEMP0, TEMP2, TEMP4 and TEMP6 - registers for corresponding tmp elements
#define VERTICAL_PASS_WHT(A, B, C, D, TEMP0, TEMP2, TEMP4, TEMP6) \
"addq.ph %[temp8], %["#TEMP0"], %["#TEMP4"] \n\t" \
"addq.ph %[temp9], %["#TEMP2"], %["#TEMP6"] \n\t" \
"subq.ph %["#TEMP2"], %["#TEMP2"], %["#TEMP6"] \n\t" \
"subq.ph %["#TEMP6"], %["#TEMP0"], %["#TEMP4"] \n\t" \
"addqh.ph %["#TEMP0"], %[temp8], %[temp9] \n\t" \
"subqh.ph %["#TEMP4"], %["#TEMP6"], %["#TEMP2"] \n\t" \
"addqh.ph %["#TEMP2"], %["#TEMP2"], %["#TEMP6"] \n\t" \
"subqh.ph %["#TEMP6"], %[temp8], %[temp9] \n\t" \
"usw %["#TEMP0"], "#A"(%[out]) \n\t" \
"usw %["#TEMP2"], "#B"(%[out]) \n\t" \
"usw %["#TEMP4"], "#C"(%[out]) \n\t" \
"usw %["#TEMP6"], "#D"(%[out]) \n\t"
static void FTransformWHT(const int16_t* in, int16_t* out) {
int temp0, temp1, temp2, temp3, temp4;
int temp5, temp6, temp7, temp8, temp9;
__asm__ volatile (
HORIZONTAL_PASS_WHT( 0, 32, 64, 96, temp0, temp1)
HORIZONTAL_PASS_WHT(128, 160, 192, 224, temp2, temp3)
HORIZONTAL_PASS_WHT(256, 288, 320, 352, temp4, temp5)
HORIZONTAL_PASS_WHT(384, 416, 448, 480, temp6, temp7)
VERTICAL_PASS_WHT(0, 8, 16, 24, temp0, temp2, temp4, temp6)
VERTICAL_PASS_WHT(4, 12, 20, 28, temp1, temp3, temp5, temp7)
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
[temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8),
[temp9]"=&r"(temp9)
: [in]"r"(in), [out]"r"(out)
: "memory"
);
}
#undef VERTICAL_PASS_WHT
#undef HORIZONTAL_PASS_WHT
#endif // WEBP_USE_MIPS_DSP_R2
//------------------------------------------------------------------------------
@ -1345,5 +1405,6 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspInitMIPSdspR2(void) {
#endif
VP8EncQuantizeBlock = QuantizeBlock;
VP8EncQuantize2Blocks = Quantize2Blocks;
VP8FTransformWHT = FTransformWHT;
#endif // WEBP_USE_MIPS_DSP_R2
}