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/*
* Loongson MMI optimizations for libjpeg-turbo
*
* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
* Copyright (C) 2015, 2019, D. R. Commander. All Rights Reserved.
* Copyright (C) 2016-2018, Loongson Technology Corporation Limited, BeiJing.
* All Rights Reserved.
* Authors: ZhuChen <zhuchen@loongson.cn>
* SunZhangzhi <sunzhangzhi-cq@loongson.cn>
* CaiWanwei <caiwanwei@loongson.cn>
*
* Based on the x86 SIMD extension for IJG JPEG library
* Copyright (C) 1999-2006, MIYASAKA Masaru.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
/* This file is included by jdcolor-mmi.c */
#if RGB_RED == 0
#define mmA re
#define mmB ro
#elif RGB_GREEN == 0
#define mmA ge
#define mmB go
#elif RGB_BLUE == 0
#define mmA be
#define mmB bo
#else
#define mmA xe
#define mmB xo
#endif
#if RGB_RED == 1
#define mmC re
#define mmD ro
#elif RGB_GREEN == 1
#define mmC ge
#define mmD go
#elif RGB_BLUE == 1
#define mmC be
#define mmD bo
#else
#define mmC xe
#define mmD xo
#endif
#if RGB_RED == 2
#define mmE re
#define mmF ro
#elif RGB_GREEN == 2
#define mmE ge
#define mmF go
#elif RGB_BLUE == 2
#define mmE be
#define mmF bo
#else
#define mmE xe
#define mmF xo
#endif
#if RGB_RED == 3
#define mmG re
#define mmH ro
#elif RGB_GREEN == 3
#define mmG ge
#define mmH go
#elif RGB_BLUE == 3
#define mmG be
#define mmH bo
#else
#define mmG xe
#define mmH xo
#endif
void jsimd_ycc_rgb_convert_mmi(JDIMENSION out_width, JSAMPIMAGE input_buf,
JDIMENSION input_row, JSAMPARRAY output_buf,
int num_rows)
{
JSAMPROW outptr, inptr0, inptr1, inptr2;
int num_cols, col;
__m64 ye, yo, y, cbe, cbe2, cbo, cbo2, cb, cre, cre2, cro, cro2, cr;
__m64 re, ro, gle, ghe, ge, glo, gho, go, be, bo, xe = 0.0, xo = 0.0;
__m64 decenter, mask;
while (--num_rows >= 0) {
inptr0 = input_buf[0][input_row];
inptr1 = input_buf[1][input_row];
inptr2 = input_buf[2][input_row];
input_row++;
outptr = *output_buf++;
for (num_cols = out_width; num_cols > 0; num_cols -= 8,
inptr0 += 8, inptr1 += 8, inptr2 += 8) {
cb = _mm_load_si64((__m64 *)inptr1);
cr = _mm_load_si64((__m64 *)inptr2);
y = _mm_load_si64((__m64 *)inptr0);
mask = decenter = 0.0;
mask = _mm_cmpeq_pi16(mask, mask);
decenter = _mm_cmpeq_pi16(decenter, decenter);
mask = _mm_srli_pi16(mask, BYTE_BIT); /* {0xFF 0x00 0xFF 0x00 ..} */
decenter = _mm_slli_pi16(decenter, 7); /* {0xFF80 0xFF80 0xFF80 0xFF80} */
cbe = _mm_and_si64(mask, cb); /* Cb(0246) */
cbo = _mm_srli_pi16(cb, BYTE_BIT); /* Cb(1357) */
cre = _mm_and_si64(mask, cr); /* Cr(0246) */
cro = _mm_srli_pi16(cr, BYTE_BIT); /* Cr(1357) */
cbe = _mm_add_pi16(cbe, decenter);
cbo = _mm_add_pi16(cbo, decenter);
cre = _mm_add_pi16(cre, decenter);
cro = _mm_add_pi16(cro, decenter);
/* (Original)
* R = Y + 1.40200 * Cr
* G = Y - 0.34414 * Cb - 0.71414 * Cr
* B = Y + 1.77200 * Cb
*
* (This implementation)
* R = Y + 0.40200 * Cr + Cr
* G = Y - 0.34414 * Cb + 0.28586 * Cr - Cr
* B = Y - 0.22800 * Cb + Cb + Cb
*/
cbe2 = _mm_add_pi16(cbe, cbe); /* 2*CbE */
cbo2 = _mm_add_pi16(cbo, cbo); /* 2*CbO */
cre2 = _mm_add_pi16(cre, cre); /* 2*CrE */
cro2 = _mm_add_pi16(cro, cro); /* 2*CrO */
be = _mm_mulhi_pi16(cbe2, PW_MF0228); /* (2*CbE * -FIX(0.22800) */
bo = _mm_mulhi_pi16(cbo2, PW_MF0228); /* (2*CbO * -FIX(0.22800) */
re = _mm_mulhi_pi16(cre2, PW_F0402); /* (2*CrE * FIX(0.40200)) */
ro = _mm_mulhi_pi16(cro2, PW_F0402); /* (2*CrO * FIX(0.40200)) */
be = _mm_add_pi16(be, PW_ONE);
bo = _mm_add_pi16(bo, PW_ONE);
be = _mm_srai_pi16(be, 1); /* (CbE * -FIX(0.22800)) */
bo = _mm_srai_pi16(bo, 1); /* (CbO * -FIX(0.22800)) */
re = _mm_add_pi16(re, PW_ONE);
ro = _mm_add_pi16(ro, PW_ONE);
re = _mm_srai_pi16(re, 1); /* (CrE * FIX(0.40200)) */
ro = _mm_srai_pi16(ro, 1); /* (CrO * FIX(0.40200)) */
be = _mm_add_pi16(be, cbe);
bo = _mm_add_pi16(bo, cbo);
be = _mm_add_pi16(be, cbe); /* (CbE * FIX(1.77200))=(B-Y)E */
bo = _mm_add_pi16(bo, cbo); /* (CbO * FIX(1.77200))=(B-Y)O */
re = _mm_add_pi16(re, cre); /* (CrE * FIX(1.40200))=(R-Y)E */
ro = _mm_add_pi16(ro, cro); /* (CrO * FIX(1.40200))=(R-Y)O */
gle = _mm_unpacklo_pi16(cbe, cre);
ghe = _mm_unpackhi_pi16(cbe, cre);
gle = _mm_madd_pi16(gle, PW_MF0344_F0285);
ghe = _mm_madd_pi16(ghe, PW_MF0344_F0285);
glo = _mm_unpacklo_pi16(cbo, cro);
gho = _mm_unpackhi_pi16(cbo, cro);
glo = _mm_madd_pi16(glo, PW_MF0344_F0285);
gho = _mm_madd_pi16(gho, PW_MF0344_F0285);
gle = _mm_add_pi32(gle, PD_ONEHALF);
ghe = _mm_add_pi32(ghe, PD_ONEHALF);
gle = _mm_srai_pi32(gle, SCALEBITS);
ghe = _mm_srai_pi32(ghe, SCALEBITS);
glo = _mm_add_pi32(glo, PD_ONEHALF);
gho = _mm_add_pi32(gho, PD_ONEHALF);
glo = _mm_srai_pi32(glo, SCALEBITS);
gho = _mm_srai_pi32(gho, SCALEBITS);
ge = _mm_packs_pi32(gle, ghe); /* CbE*-FIX(0.344)+CrE*FIX(0.285) */
go = _mm_packs_pi32(glo, gho); /* CbO*-FIX(0.344)+CrO*FIX(0.285) */
ge = _mm_sub_pi16(ge, cre); /* CbE*-FIX(0.344)+CrE*-FIX(0.714)=(G-Y)E */
go = _mm_sub_pi16(go, cro); /* CbO*-FIX(0.344)+CrO*-FIX(0.714)=(G-Y)O */
ye = _mm_and_si64(mask, y); /* Y(0246) */
yo = _mm_srli_pi16(y, BYTE_BIT); /* Y(1357) */
re = _mm_add_pi16(re, ye); /* ((R-Y)E+YE)=(R0 R2 R4 R6) */
ro = _mm_add_pi16(ro, yo); /* ((R-Y)O+YO)=(R1 R3 R5 R7) */
re = _mm_packs_pu16(re, re); /* (R0 R2 R4 R6 ** ** ** **) */
ro = _mm_packs_pu16(ro, ro); /* (R1 R3 R5 R7 ** ** ** **) */
ge = _mm_add_pi16(ge, ye); /* ((G-Y)E+YE)=(G0 G2 G4 G6) */
go = _mm_add_pi16(go, yo); /* ((G-Y)O+YO)=(G1 G3 G5 G7) */
ge = _mm_packs_pu16(ge, ge); /* (G0 G2 G4 G6 ** ** ** **) */
go = _mm_packs_pu16(go, go); /* (G1 G3 G5 G7 ** ** ** **) */
be = _mm_add_pi16(be, ye); /* (YE+(B-Y)E)=(B0 B2 B4 B6) */
bo = _mm_add_pi16(bo, yo); /* (YO+(B-Y)O)=(B1 B3 B5 B7) */
be = _mm_packs_pu16(be, be); /* (B0 B2 B4 B6 ** ** ** **) */
bo = _mm_packs_pu16(bo, bo); /* (B1 B3 B5 B7 ** ** ** **) */
#if RGB_PIXELSIZE == 3
/* mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **) */
/* mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **) */
mmA = _mm_unpacklo_pi8(mmA, mmC); /* (00 10 02 12 04 14 06 16) */
mmE = _mm_unpacklo_pi8(mmE, mmB); /* (20 01 22 03 24 05 26 07) */
mmD = _mm_unpacklo_pi8(mmD, mmF); /* (11 21 13 23 15 25 17 27) */
mmH = _mm_srli_si64(mmA, 2 * BYTE_BIT);
mmG = _mm_unpackhi_pi16(mmA, mmE); /* (04 14 24 05 06 16 26 07) */
mmA = _mm_unpacklo_pi16(mmA, mmE); /* (00 10 20 01 02 12 22 03) */
mmE = _mm_srli_si64(mmE, 2 * BYTE_BIT);
mmB = _mm_srli_si64(mmD, 2 * BYTE_BIT); /* (13 23 15 25 17 27 -- --) */
mmC = _mm_unpackhi_pi16(mmD, mmH); /* (15 25 06 16 17 27 -- --) */
mmD = _mm_unpacklo_pi16(mmD, mmH); /* (11 21 02 12 13 23 04 14) */
mmF = _mm_unpackhi_pi16(mmE, mmB); /* (26 07 17 27 -- -- -- --) */
mmE = _mm_unpacklo_pi16(mmE, mmB); /* (22 03 13 23 24 05 15 25) */
mmA = _mm_unpacklo_pi32(mmA, mmD); /* (00 10 20 01 11 21 02 12) */
mmE = _mm_unpacklo_pi32(mmE, mmG); /* (22 03 13 23 04 14 24 05) */
mmC = _mm_unpacklo_pi32(mmC, mmF); /* (15 25 06 16 26 07 17 27) */
if (num_cols >= 8) {
if (!(((long)outptr) & 7)) {
_mm_store_si64((__m64 *)outptr, mmA);
_mm_store_si64((__m64 *)(outptr + 8), mmE);
_mm_store_si64((__m64 *)(outptr + 16), mmC);
} else {
_mm_storeu_si64((__m64 *)outptr, mmA);
_mm_storeu_si64((__m64 *)(outptr + 8), mmE);
_mm_storeu_si64((__m64 *)(outptr + 16), mmC);
}
outptr += RGB_PIXELSIZE * 8;
} else {
col = num_cols * 3;
asm(".set noreorder\r\n"
"li $8, 16\r\n"
"move $9, %4\r\n"
"mov.s $f4, %1\r\n"
"mov.s $f6, %3\r\n"
"move $10, %5\r\n"
"bltu $9, $8, 1f\r\n"
"nop \r\n"
"gssdlc1 $f4, 7($10)\r\n"
"gssdrc1 $f4, 0($10)\r\n"
"gssdlc1 $f6, 7+8($10)\r\n"
"gssdrc1 $f6, 8($10)\r\n"
"mov.s $f4, %2\r\n"
"subu $9, $9, 16\r\n"
PTR_ADDU "$10, $10, 16\r\n"
"b 2f\r\n"
"nop \r\n"
"1: \r\n"
"li $8, 8\r\n" /* st8 */
"bltu $9, $8, 2f\r\n"
"nop \r\n"
"gssdlc1 $f4, 7($10)\r\n"
"gssdrc1 $f4, 0($10)\r\n"
"mov.s $f4, %3\r\n"
"subu $9, $9, 8\r\n"
PTR_ADDU "$10, $10, 8\r\n"
"2: \r\n"
"li $8, 4\r\n" /* st4 */
"mfc1 $11, $f4\r\n"
"bltu $9, $8, 3f\r\n"
"nop \r\n"
"swl $11, 3($10)\r\n"
"swr $11, 0($10)\r\n"
"li $8, 32\r\n"
"mtc1 $8, $f6\r\n"
"dsrl $f4, $f4, $f6\r\n"
"mfc1 $11, $f4\r\n"
"subu $9, $9, 4\r\n"
PTR_ADDU "$10, $10, 4\r\n"
"3: \r\n"
"li $8, 2\r\n" /* st2 */
"bltu $9, $8, 4f\r\n"
"nop \r\n"
"ush $11, 0($10)\r\n"
"srl $11, 16\r\n"
"subu $9, $9, 2\r\n"
PTR_ADDU "$10, $10, 2\r\n"
"4: \r\n"
"li $8, 1\r\n" /* st1 */
"bltu $9, $8, 5f\r\n"
"nop \r\n"
"sb $11, 0($10)\r\n"
"5: \r\n"
"nop \r\n" /* end */
: "=m" (*outptr)
: "f" (mmA), "f" (mmC), "f" (mmE), "r" (col), "r" (outptr)
: "$f4", "$f6", "$8", "$9", "$10", "$11", "memory"
);
}
#else /* RGB_PIXELSIZE == 4 */
#ifdef RGBX_FILLER_0XFF
xe = _mm_cmpeq_pi8(xe, xe);
xo = _mm_cmpeq_pi8(xo, xo);
#else
xe = _mm_xor_si64(xe, xe);
xo = _mm_xor_si64(xo, xo);
#endif
/* mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **) */
/* mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **) */
/* mmE=(20 22 24 26 ** ** ** **), mmF=(21 23 25 27 ** ** ** **) */
/* mmG=(30 32 34 36 ** ** ** **), mmH=(31 33 35 37 ** ** ** **) */
mmA = _mm_unpacklo_pi8(mmA, mmC); /* (00 10 02 12 04 14 06 16) */
mmE = _mm_unpacklo_pi8(mmE, mmG); /* (20 30 22 32 24 34 26 36) */
mmB = _mm_unpacklo_pi8(mmB, mmD); /* (01 11 03 13 05 15 07 17) */
mmF = _mm_unpacklo_pi8(mmF, mmH); /* (21 31 23 33 25 35 27 37) */
mmC = _mm_unpackhi_pi16(mmA, mmE); /* (04 14 24 34 06 16 26 36) */
mmA = _mm_unpacklo_pi16(mmA, mmE); /* (00 10 20 30 02 12 22 32) */
mmG = _mm_unpackhi_pi16(mmB, mmF); /* (05 15 25 35 07 17 27 37) */
mmB = _mm_unpacklo_pi16(mmB, mmF); /* (01 11 21 31 03 13 23 33) */
mmD = _mm_unpackhi_pi32(mmA, mmB); /* (02 12 22 32 03 13 23 33) */
mmA = _mm_unpacklo_pi32(mmA, mmB); /* (00 10 20 30 01 11 21 31) */
mmH = _mm_unpackhi_pi32(mmC, mmG); /* (06 16 26 36 07 17 27 37) */
mmC = _mm_unpacklo_pi32(mmC, mmG); /* (04 14 24 34 05 15 25 35) */
if (num_cols >= 8) {
if (!(((long)outptr) & 7)) {
_mm_store_si64((__m64 *)outptr, mmA);
_mm_store_si64((__m64 *)(outptr + 8), mmD);
_mm_store_si64((__m64 *)(outptr + 16), mmC);
_mm_store_si64((__m64 *)(outptr + 24), mmH);
} else {
_mm_storeu_si64((__m64 *)outptr, mmA);
_mm_storeu_si64((__m64 *)(outptr + 8), mmD);
_mm_storeu_si64((__m64 *)(outptr + 16), mmC);
_mm_storeu_si64((__m64 *)(outptr + 24), mmH);
}
outptr += RGB_PIXELSIZE * 8;
} else {
col = num_cols;
asm(".set noreorder\r\n" /* st16 */
"li $8, 4\r\n"
"move $9, %6\r\n"
"move $10, %7\r\n"
"mov.s $f4, %2\r\n"
"mov.s $f6, %4\r\n"
"bltu $9, $8, 1f\r\n"
"nop \r\n"
"gssdlc1 $f4, 7($10)\r\n"
"gssdrc1 $f4, 0($10)\r\n"
"gssdlc1 $f6, 7+8($10)\r\n"
"gssdrc1 $f6, 8($10)\r\n"
"mov.s $f4, %3\r\n"
"mov.s $f6, %5\r\n"
"subu $9, $9, 4\r\n"
PTR_ADDU "$10, $10, 16\r\n"
"1: \r\n"
"li $8, 2\r\n" /* st8 */
"bltu $9, $8, 2f\r\n"
"nop \r\n"
"gssdlc1 $f4, 7($10)\r\n"
"gssdrc1 $f4, 0($10)\r\n"
"mov.s $f4, $f6\r\n"
"subu $9, $9, 2\r\n"
PTR_ADDU "$10, $10, 8\r\n"
"2: \r\n"
"li $8, 1\r\n" /* st4 */
"bltu $9, $8, 3f\r\n"
"nop \r\n"
"gsswlc1 $f4, 3($10)\r\n"
"gsswrc1 $f4, 0($10)\r\n"
"3: \r\n"
"li %1, 0\r\n" /* end */
: "=m" (*outptr), "=r" (col)
: "f" (mmA), "f" (mmC), "f" (mmD), "f" (mmH), "r" (col),
"r" (outptr)
: "$f4", "$f6", "$8", "$9", "$10", "memory"
);
}
#endif
}
}
}
#undef mmA
#undef mmB
#undef mmC
#undef mmD
#undef mmE
#undef mmF
#undef mmG
#undef mmH