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libjpeg-turbo/simd/mips64/jdcolext-mmi.c

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/*
* Loongson MMI optimizations for libjpeg-turbo
*
* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
* Copyright (C) 2015, 2019, 2025, 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
/* NOTE: The values of RGB_RED, RGB_GREEN, and RGB_BLUE determine the
* mapping of components A, B, and C to red, green, and blue.
*
* mmA = (A0 A2 A4 A6 ** ** ** **) = AE
* mmB = (A1 A3 A5 A7 ** ** ** **) = AO
* mmC = (B0 B2 B4 B6 ** ** ** **) = BE
* mmD = (B1 B3 B5 B7 ** ** ** **) = BO
* mmE = (C0 C2 C4 C6 ** ** ** **) = CE
* mmF = (C1 C3 C5 C7 ** ** ** **) = CO
* mmG = (** ** ** ** ** ** ** **)
* mmH = (** ** ** ** ** ** ** **)
*/
mmA = _mm_unpacklo_pi8(mmA, mmC); /* (A0 B0 A2 B2 A4 B4 A6 B6) */
mmE = _mm_unpacklo_pi8(mmE, mmB); /* (C0 A1 C2 A3 C4 A5 C6 A7) */
mmD = _mm_unpacklo_pi8(mmD, mmF); /* (B1 C1 B3 C3 B5 C5 B7 C7) */
mmH = _mm_srli_si64(mmA, 2 * BYTE_BIT);
mmG = _mm_unpackhi_pi16(mmA, mmE); /* (A4 B4 C4 A5 A6 B6 C6 A7) */
mmA = _mm_unpacklo_pi16(mmA, mmE); /* (A0 B0 C0 A1 A2 B2 C2 A3) */
mmE = _mm_srli_si64(mmE, 2 * BYTE_BIT);
mmB = _mm_srli_si64(mmD, 2 * BYTE_BIT); /* (B3 C3 B5 C5 B7 C7 -- --) */
mmC = _mm_unpackhi_pi16(mmD, mmH); /* (B5 C5 A6 B6 B7 C7 -- --) */
mmD = _mm_unpacklo_pi16(mmD, mmH); /* (B1 C1 A2 B2 B3 C3 A4 B4) */
mmF = _mm_unpackhi_pi16(mmE, mmB); /* (C6 A7 B7 C7 -- -- -- --) */
mmE = _mm_unpacklo_pi16(mmE, mmB); /* (C2 A3 B3 C3 C4 A5 B5 C5) */
mmA = _mm_unpacklo_pi32(mmA, mmD); /* (A0 B0 C0 A1 B1 C1 A2 B2) */
mmE = _mm_unpacklo_pi32(mmE, mmG); /* (C2 A3 B3 C3 A4 B4 C4 A5) */
mmC = _mm_unpacklo_pi32(mmC, mmF); /* (B5 C5 A6 B6 C6 A7 B7 C7) */
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
/* NOTE: The values of RGB_RED, RGB_GREEN, and RGB_BLUE determine the
* mapping of components A, B, C, and D to red, green, and blue.
*
* mmA = (A0 A2 A4 A6 ** ** ** **) = AE
* mmB = (A1 A3 A5 A7 ** ** ** **) = AO
* mmC = (B0 B2 B4 B6 ** ** ** **) = BE
* mmD = (B1 B3 B5 B7 ** ** ** **) = BO
* mmE = (C0 C2 C4 C6 ** ** ** **) = CE
* mmF = (C1 C3 C5 C7 ** ** ** **) = CO
* mmG = (D0 D2 D4 D6 ** ** ** **) = DE
* mmH = (D1 D3 D5 D7 ** ** ** **) = DO
*/
mmA = _mm_unpacklo_pi8(mmA, mmC); /* (A0 B0 A2 B2 A4 B4 A6 B6) */
mmE = _mm_unpacklo_pi8(mmE, mmG); /* (C0 D0 C2 D2 C4 D4 C6 D6) */
mmB = _mm_unpacklo_pi8(mmB, mmD); /* (A1 B1 A3 B3 A5 B5 A7 B7) */
mmF = _mm_unpacklo_pi8(mmF, mmH); /* (C1 D1 C3 D3 C5 D5 C7 D7) */
mmC = _mm_unpackhi_pi16(mmA, mmE); /* (A4 B4 C4 D4 A6 B6 C6 D6) */
mmA = _mm_unpacklo_pi16(mmA, mmE); /* (A0 B0 C0 D0 A2 B2 C2 D2) */
mmG = _mm_unpackhi_pi16(mmB, mmF); /* (A5 B5 C5 D5 A7 B7 C7 D7) */
mmB = _mm_unpacklo_pi16(mmB, mmF); /* (A1 B1 C1 D1 A3 B3 C3 D3) */
mmD = _mm_unpackhi_pi32(mmA, mmB); /* (A2 B2 C2 D2 A3 B3 C3 D3) */
mmA = _mm_unpacklo_pi32(mmA, mmB); /* (A0 B0 C0 D0 A1 B1 C1 D1) */
mmH = _mm_unpackhi_pi32(mmC, mmG); /* (A6 B6 C6 D6 A7 B7 C7 D7) */
mmC = _mm_unpacklo_pi32(mmC, mmG); /* (A4 B4 C4 D4 A5 B5 C5 D5) */
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
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