/*
* Loongson MMI optimizations for libjpeg-turbo
*
* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
* Copyright (C) 2015, D. R. Commander. All Rights Reserved.
* Copyright (C) 2016-2017, 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 mm0
#define mmB mm1
#elif RGB_GREEN == 0
#define mmA mm2
#define mmB mm3
#elif RGB_BLUE == 0
#define mmA mm4
#define mmB mm5
#else
#define mmA mm6
#define mmB mm7
#endif
#if RGB_RED == 1
#define mmC mm0
#define mmD mm1
#elif RGB_GREEN == 1
#define mmC mm2
#define mmD mm3
#elif RGB_BLUE == 1
#define mmC mm4
#define mmD mm5
#else
#define mmC mm6
#define mmD mm7
#endif
#if RGB_RED == 2
#define mmE mm0
#define mmF mm1
#elif RGB_GREEN == 2
#define mmE mm2
#define mmF mm3
#elif RGB_BLUE == 2
#define mmE mm4
#define mmF mm5
#else
#define mmE mm6
#define mmF mm7
#endif
#if RGB_RED == 3
#define mmG mm0
#define mmH mm1
#elif RGB_GREEN == 3
#define mmG mm2
#define mmH mm3
#elif RGB_BLUE == 3
#define mmG mm4
#define mmH mm5
#else
#define mmG mm6
#define mmH mm7
#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 mm0, mm1, mm2, mm3, mm4, mm5, mm6, mm7;
__m64 mm8, wk[2];
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) {
mm5 = _mm_load_si64((__m64 *)inptr1);
mm1 = _mm_load_si64((__m64 *)inptr2);
mm8 = _mm_load_si64((__m64 *)inptr0);
mm4 = 0;
mm7 = 0;
mm4 = _mm_cmpeq_pi16(mm4, mm4);
mm7 = _mm_cmpeq_pi16(mm7, mm7);
mm4 = _mm_srli_pi16(mm4, BYTE_BIT);
mm7 = _mm_slli_pi16(mm7, 7); /* mm7={0xFF80 0xFF80 0xFF80 0xFF80} */
mm0 = mm4; /* mm0=mm4={0xFF 0x00 0xFF 0x00 ..} */
mm4 = _mm_and_si64(mm4, mm5); /* mm4=Cb(0246)=CbE */
mm5 = _mm_srli_pi16(mm5, BYTE_BIT); /* mm5=Cb(1357)=CbO */
mm0 = _mm_and_si64(mm0, mm1); /* mm0=Cr(0246)=CrE */
mm1 = _mm_srli_pi16(mm1, BYTE_BIT); /* mm1=Cr(1357)=CrO */
mm4 = _mm_add_pi16(mm4, mm7);
mm5 = _mm_add_pi16(mm5, mm7);
mm0 = _mm_add_pi16(mm0, mm7);
mm1 = _mm_add_pi16(mm1, mm7);
/* (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
*/
mm2 = mm4; /* mm2 = CbE */
mm3 = mm5; /* mm3 = CbO */
mm4 = _mm_add_pi16(mm4, mm4); /* mm4 = 2*CbE */
mm5 = _mm_add_pi16(mm5, mm5); /* mm5 = 2*CbO */
mm6 = mm0; /* mm6 = CrE */
mm7 = mm1; /* mm7 = CrO */
mm0 = _mm_add_pi16(mm0, mm0); /* mm0 = 2*CrE */
mm1 = _mm_add_pi16(mm1, mm1); /* mm1 = 2*CrO */
mm4 = _mm_mulhi_pi16(mm4, PW_MF0228); /* mm4=(2*CbE * -FIX(0.22800) */
mm5 = _mm_mulhi_pi16(mm5, PW_MF0228); /* mm5=(2*CbO * -FIX(0.22800) */
mm0 = _mm_mulhi_pi16(mm0, PW_F0402); /* mm0=(2*CrE * FIX(0.40200)) */
mm1 = _mm_mulhi_pi16(mm1, PW_F0402); /* mm1=(2*CrO * FIX(0.40200)) */
mm4 = _mm_add_pi16(mm4, PW_ONE);
mm5 = _mm_add_pi16(mm5, PW_ONE);
mm4 = _mm_srai_pi16(mm4, 1); /* mm4=(CbE * -FIX(0.22800)) */
mm5 = _mm_srai_pi16(mm5, 1); /* mm5=(CbO * -FIX(0.22800)) */
mm0 = _mm_add_pi16(mm0, PW_ONE);
mm1 = _mm_add_pi16(mm1, PW_ONE);
mm0 = _mm_srai_pi16(mm0, 1); /* mm0=(CrE * FIX(0.40200)) */
mm1 = _mm_srai_pi16(mm1, 1); /* mm1=(CrO * FIX(0.40200)) */
mm4 = _mm_add_pi16(mm4, mm2);
mm5 = _mm_add_pi16(mm5, mm3);
mm4 = _mm_add_pi16(mm4, mm2); /* mm4=(CbE * FIX(1.77200))=(B-Y)E */
mm5 = _mm_add_pi16(mm5, mm3); /* mm5=(CbO * FIX(1.77200))=(B-Y)O */
mm0 = _mm_add_pi16(mm0, mm6); /* mm0=(CrE * FIX(1.40200))=(R-Y)E */
mm1 = _mm_add_pi16(mm1, mm7); /* mm1=(CrO * FIX(1.40200))=(R-Y)O */
wk[0] = mm4; /* wk(0)=(B-Y)E */
wk[1] = mm5; /* wk(1)=(B-Y)O */
mm4 = mm2;
mm5 = mm3;
mm2 = _mm_unpacklo_pi16(mm2, mm6);
mm4 = _mm_unpackhi_pi16(mm4, mm6);
mm2 = _mm_madd_pi16(mm2, PW_MF0344_F0285);
mm4 = _mm_madd_pi16(mm4, PW_MF0344_F0285);
mm3 = _mm_unpacklo_pi16(mm3, mm7);
mm5 = _mm_unpackhi_pi16(mm5, mm7);
mm3 = _mm_madd_pi16(mm3, PW_MF0344_F0285);
mm5 = _mm_madd_pi16(mm5, PW_MF0344_F0285);
mm2 = _mm_add_pi32(mm2, PD_ONEHALF);
mm4 = _mm_add_pi32(mm4, PD_ONEHALF);
mm2 = _mm_srai_pi32(mm2, SCALEBITS);
mm4 = _mm_srai_pi32(mm4, SCALEBITS);
mm3 = _mm_add_pi32(mm3, PD_ONEHALF);
mm5 = _mm_add_pi32(mm5, PD_ONEHALF);
mm3 = _mm_srai_pi32(mm3, SCALEBITS);
mm5 = _mm_srai_pi32(mm5, SCALEBITS);
mm2 = _mm_packs_pi32(mm2, mm4); /* mm2=CbE*-FIX(0.344)+CrE*FIX(0.285) */
mm3 = _mm_packs_pi32(mm3, mm5); /* mm3=CbO*-FIX(0.344)+CrO*FIX(0.285) */
mm2 = _mm_sub_pi16(mm2, mm6); /* mm2=CbE*-FIX(0.344)+CrE*-FIX(0.714)=(G-Y)E */
mm3 = _mm_sub_pi16(mm3, mm7); /* mm3=CbO*-FIX(0.344)+CrO*-FIX(0.714)=(G-Y)O */
mm5 = mm8; /* mm5=Y(01234567) */
mm4 = _mm_cmpeq_pi16(mm4, mm4);
mm4 = _mm_srli_pi16(mm4, BYTE_BIT); /* mm4={0xFF 0x00 0xFF 0x00 ..} */
mm4 = _mm_and_si64(mm4, mm5); /* mm4=Y(0246)=YE */
mm5 = _mm_srli_pi16(mm5, BYTE_BIT); /* mm5=Y(1357)=YO */
mm0 = _mm_add_pi16(mm0, mm4); /* mm0=((R-Y)E+YE)=RE=(R0 R2 R4 R6) */
mm1 = _mm_add_pi16(mm1, mm5); /* mm1=((R-Y)O+YO)=RO=(R1 R3 R5 R7) */
mm0 = _mm_packs_pu16(mm0, mm0); /* mm0=(R0 R2 R4 R6 ** ** ** **) */
mm1 = _mm_packs_pu16(mm1, mm1); /* mm1=(R1 R3 R5 R7 ** ** ** **) */
mm2 = _mm_add_pi16(mm2, mm4); /* mm2=((G-Y)E+YE)=GE=(G0 G2 G4 G6) */
mm3 = _mm_add_pi16(mm3, mm5); /* mm3=((G-Y)O+YO)=GO=(G1 G3 G5 G7) */
mm2 = _mm_packs_pu16(mm2, mm2); /* mm2=(G0 G2 G4 G6 ** ** ** **) */
mm3 = _mm_packs_pu16(mm3, mm3); /* mm3=(G1 G3 G5 G7 ** ** ** **) */
mm4 = _mm_add_pi16(mm4, wk[0]); /* mm4=(YE+(B-Y)E)=BE=(B0 B2 B4 B6) */
mm5 = _mm_add_pi16(mm5, wk[1]); /* mm5=(YO+(B-Y)O)=BO=(B1 B3 B5 B7) */
mm4 = _mm_packs_pu16(mm4, mm4); /* mm4=(B0 B2 B4 B6 ** ** ** **) */
mm5 = _mm_packs_pu16(mm5, mm5); /* mm5=(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); /* mmA=(00 10 02 12 04 14 06 16) */
mmE = _mm_unpacklo_pi8(mmE, mmB); /* mmE=(20 01 22 03 24 05 26 07) */
mmD = _mm_unpacklo_pi8(mmD, mmF); /* mmD=(11 21 13 23 15 25 17 27) */
mmG = mmA;
mmH = mmA;
mmA = _mm_unpacklo_pi16(mmA, mmE); /* mmA=(00 10 20 01 02 12 22 03) */
mmG = _mm_unpackhi_pi16(mmG, mmE); /* mmG=(04 14 24 05 06 16 26 07) */
mmH = _mm_srli_si64(mmH, 2 * BYTE_BIT);
mmE = _mm_srli_si64(mmE, 2 * BYTE_BIT);
mmC = mmD;
mmB = mmD;
mmD = _mm_unpacklo_pi16(mmD, mmH); /* mmD=(11 21 02 12 13 23 04 14) */
mmC = _mm_unpackhi_pi16(mmC, mmH); /* mmC=(15 25 06 16 17 27 -- --) */
mmB = _mm_srli_si64(mmB, 2 * BYTE_BIT); /* mmB=(13 23 15 25 17 27 -- --) */
mmF = mmE;
mmE = _mm_unpacklo_pi16(mmE, mmB); /* mmE=(22 03 13 23 24 05 15 25) */
mmF = _mm_unpackhi_pi16(mmF, mmB); /* mmF=(26 07 17 27 -- -- -- --) */
mmA = _mm_unpacklo_pi32(mmA, mmD); /* mmA=(00 10 20 01 11 21 02 12) */
mmE = _mm_unpacklo_pi32(mmE, mmG); /* mmE=(22 03 13 23 04 14 24 05) */
mmC = _mm_unpacklo_pi32(mmC, mmF); /* mmC=(15 25 06 16 26 07 17 27) */
if (num_cols >= 8) {
_mm_store_si64((__m64 *)outptr, mmA);
_mm_store_si64((__m64 *)(outptr + 8), mmE);
_mm_store_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"
"daddu $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, ($10)\r\n"
"mov.s $f4, %3\r\n"
"subu $9, $9, 8\r\n"
"daddu $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"
"daddu $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"
"daddu $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
mm6 = _mm_cmpeq_pi8(mm6, mm6);
mm7 = _mm_cmpeq_pi8(mm7, mm7);
#else
mm6 = _mm_xor_si64(mm6, mm6);
mm7 = _mm_xor_si64(mm7, mm7);
#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); /* mmA=(00 10 02 12 04 14 06 16) */
mmE = _mm_unpacklo_pi8(mmE, mmG); /* mmE=(20 30 22 32 24 34 26 36) */
mmB = _mm_unpacklo_pi8(mmB, mmD); /* mmB=(01 11 03 13 05 15 07 17) */
mmF = _mm_unpacklo_pi8(mmF, mmH); /* mmF=(21 31 23 33 25 35 27 37) */
mmC = mmA;
mmA = _mm_unpacklo_pi16(mmA, mmE); /* mmA=(00 10 20 30 02 12 22 32) */
mmC = _mm_unpackhi_pi16(mmC, mmE); /* mmC=(04 14 24 34 06 16 26 36) */
mmG = mmB;
mmB = _mm_unpacklo_pi16(mmB, mmF); /* mmB=(01 11 21 31 03 13 23 33) */
mmG = _mm_unpackhi_pi16(mmG, mmF); /* mmG=(05 15 25 35 07 17 27 37) */
mmD = mmA;
mmA = _mm_unpacklo_pi32(mmA, mmB); /* mmA=(00 10 20 30 01 11 21 31) */
mmD = _mm_unpackhi_pi32(mmD, mmB); /* mmD=(02 12 22 32 03 13 23 33) */
mmH = mmC;
mmC = _mm_unpacklo_pi32(mmC, mmG); /* mmC=(04 14 24 34 05 15 25 35) */
mmH = _mm_unpackhi_pi32(mmH, mmG); /* mmH=(06 16 26 36 07 17 27 37) */
if (num_cols >= 8) {
_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);
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, ($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"
"daddu $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"
"daddu $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