mozilla-central/media/libjpeg/simd/mips64/jidctfst-mmi.c

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/*
* Loongson MMI optimizations for libjpeg-turbo
*
* Copyright (C) 2014-2015, 2018-2019, D. R. Commander. All Rights Reserved.
* Copyright (C) 2016-2018, Loongson Technology Corporation Limited, BeiJing.
* All Rights Reserved.
* Authors: LiuQingfa <liuqingfa-hf@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.
*/
/* FAST INTEGER INVERSE DCT */
#include "jsimd_mmi.h"
#define CONST_BITS 8
#define PASS1_BITS 2
#define FIX_1_082 ((short)277) /* FIX(1.082392200) */
#define FIX_1_414 ((short)362) /* FIX(1.414213562) */
#define FIX_1_847 ((short)473) /* FIX(1.847759065) */
#define FIX_2_613 ((short)669) /* FIX(2.613125930) */
#define FIX_1_613 ((short)(FIX_2_613 - 256 * 3)) /* FIX(2.613125930) - FIX(1) */
#define PRE_MULTIPLY_SCALE_BITS 2
#define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS)
enum const_index {
index_PW_F1082,
index_PW_F1414,
index_PW_F1847,
index_PW_MF1613,
index_PB_CENTERJSAMP
};
static uint64_t const_value[] = {
_uint64_set1_pi16(FIX_1_082 << CONST_SHIFT),
_uint64_set1_pi16(FIX_1_414 << CONST_SHIFT),
_uint64_set1_pi16(FIX_1_847 << CONST_SHIFT),
_uint64_set1_pi16(-FIX_1_613 << CONST_SHIFT),
_uint64_set1_pi8(CENTERJSAMPLE)
};
#define PW_F1414 get_const_value(index_PW_F1414)
#define PW_F1847 get_const_value(index_PW_F1847)
#define PW_MF1613 get_const_value(index_PW_MF1613)
#define PW_F1082 get_const_value(index_PW_F1082)
#define PB_CENTERJSAMP get_const_value(index_PB_CENTERJSAMP)
#define test_m32_zero(mm32) (!(*(uint32_t *)&mm32))
#define test_m64_zero(mm64) (!(*(uint64_t *)&mm64))
#define DO_IDCT_COMMON() { \
tmp7 = _mm_add_pi16(z11, z13); \
\
tmp11 = _mm_sub_pi16(z11, z13); \
tmp11 = _mm_slli_pi16(tmp11, PRE_MULTIPLY_SCALE_BITS); \
tmp11 = _mm_mulhi_pi16(tmp11, PW_F1414); \
\
tmp10 = _mm_slli_pi16(z12, PRE_MULTIPLY_SCALE_BITS); \
tmp12 = _mm_slli_pi16(z10, PRE_MULTIPLY_SCALE_BITS); \
\
/* To avoid overflow... \
* \
* (Original) \
* tmp12 = -2.613125930 * z10 + z5; \
* \
* (This implementation) \
* tmp12 = (-1.613125930 - 1) * z10 + z5; \
* = -1.613125930 * z10 - z10 + z5; \
*/ \
\
z5 = _mm_add_pi16(tmp10, tmp12); \
z5 = _mm_mulhi_pi16(z5, PW_F1847); \
\
tmp10 = _mm_mulhi_pi16(tmp10, PW_F1082); \
tmp10 = _mm_sub_pi16(tmp10, z5); \
tmp12 = _mm_mulhi_pi16(tmp12, PW_MF1613); \
tmp12 = _mm_sub_pi16(tmp12, z10); \
tmp12 = _mm_sub_pi16(tmp12, z10); \
tmp12 = _mm_sub_pi16(tmp12, z10); \
tmp12 = _mm_add_pi16(tmp12, z5); \
\
/* Final output stage */ \
\
tmp6 = _mm_sub_pi16(tmp12, tmp7); \
tmp5 = _mm_sub_pi16(tmp11, tmp6); \
tmp4 = _mm_add_pi16(tmp10, tmp5); \
\
out0 = _mm_add_pi16(tmp0, tmp7); \
out7 = _mm_sub_pi16(tmp0, tmp7); \
out1 = _mm_add_pi16(tmp1, tmp6); \
out6 = _mm_sub_pi16(tmp1, tmp6); \
\
out2 = _mm_add_pi16(tmp2, tmp5); \
out5 = _mm_sub_pi16(tmp2, tmp5); \
out4 = _mm_add_pi16(tmp3, tmp4); \
out3 = _mm_sub_pi16(tmp3, tmp4); \
}
#define DO_IDCT_PASS1(iter) { \
__m64 col0l, col1l, col2l, col3l, col4l, col5l, col6l, col7l; \
__m64 quant0l, quant1l, quant2l, quant3l; \
__m64 quant4l, quant5l, quant6l, quant7l; \
__m64 row01a, row01b, row01c, row01d, row23a, row23b, row23c, row23d; \
__m64 row0l, row0h, row1l, row1h, row2l, row2h, row3l, row3h; \
__m32 col0a, col1a, mm0; \
\
col0a = _mm_load_si32((__m32 *)&inptr[DCTSIZE * 1]); \
col1a = _mm_load_si32((__m32 *)&inptr[DCTSIZE * 2]); \
mm0 = _mm_or_si32(col0a, col1a); \
\
if (test_m32_zero(mm0)) { \
__m64 mm1, mm2; \
\
col0l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 0]); \
col1l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 1]); \
col2l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 2]); \
col3l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 3]); \
col4l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 4]); \
col5l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 5]); \
col6l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 6]); \
col7l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 7]); \
\
mm1 = _mm_or_si64(col1l, col3l); \
mm2 = _mm_or_si64(col2l, col4l); \
mm1 = _mm_or_si64(mm1, col5l); \
mm2 = _mm_or_si64(mm2, col6l); \
mm1 = _mm_or_si64(mm1, col7l); \
mm1 = _mm_or_si64(mm1, mm2); \
\
if (test_m64_zero(mm1)) { \
__m64 dcval, dcvall, dcvalh, row0, row1, row2, row3; \
\
/* AC terms all zero */ \
\
quant0l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 0]); \
\
dcval = _mm_mullo_pi16(col0l, quant0l); /* dcval=(00 10 20 30) */ \
\
dcvall = _mm_unpacklo_pi16(dcval, dcval); /* dcvall=(00 00 10 10) */ \
dcvalh = _mm_unpackhi_pi16(dcval, dcval); /* dcvalh=(20 20 30 30) */ \
\
row0 = _mm_unpacklo_pi32(dcvall, dcvall); /* row0=(00 00 00 00) */ \
row1 = _mm_unpackhi_pi32(dcvall, dcvall); /* row1=(10 10 10 10) */ \
row2 = _mm_unpacklo_pi32(dcvalh, dcvalh); /* row2=(20 20 20 20) */ \
row3 = _mm_unpackhi_pi32(dcvalh, dcvalh); /* row3=(30 30 30 30) */ \
\
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 0], row0); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 0 + 4], row0); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 1], row1); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 1 + 4], row1); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 2], row2); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 2 + 4], row2); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 3], row3); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 3 + 4], row3); \
\
goto nextcolumn##iter; \
} \
} \
\
/* Even part */ \
\
col0l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 0]); /* (00 10 20 30) */ \
col2l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 2]); /* (02 12 22 32) */ \
col4l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 4]); /* (04 14 24 34) */ \
col6l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 6]); /* (06 16 26 36) */ \
\
quant0l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 0]); \
quant2l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 2]); \
quant4l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 4]); \
quant6l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 6]); \
\
tmp0 = _mm_mullo_pi16(col0l, quant0l); \
tmp1 = _mm_mullo_pi16(col2l, quant2l); \
tmp2 = _mm_mullo_pi16(col4l, quant4l); \
tmp3 = _mm_mullo_pi16(col6l, quant6l); \
\
tmp10 = _mm_add_pi16(tmp0, tmp2); \
tmp11 = _mm_sub_pi16(tmp0, tmp2); \
tmp13 = _mm_add_pi16(tmp1, tmp3); \
\
tmp12 = _mm_sub_pi16(tmp1, tmp3); \
tmp12 = _mm_slli_pi16(tmp12, PRE_MULTIPLY_SCALE_BITS); \
tmp12 = _mm_mulhi_pi16(tmp12, PW_F1414); \
tmp12 = _mm_sub_pi16(tmp12, tmp13); \
\
tmp0 = _mm_add_pi16(tmp10, tmp13); \
tmp3 = _mm_sub_pi16(tmp10, tmp13); \
tmp1 = _mm_add_pi16(tmp11, tmp12); \
tmp2 = _mm_sub_pi16(tmp11, tmp12); \
\
/* Odd part */ \
\
col1l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 1]); /* (01 11 21 31) */ \
col3l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 3]); /* (03 13 23 33) */ \
col5l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 5]); /* (05 15 25 35) */ \
col7l = _mm_load_si64((__m64 *)&inptr[DCTSIZE * 7]); /* (07 17 27 37) */ \
\
quant1l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 1]); \
quant3l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 3]); \
quant5l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 5]); \
quant7l = _mm_load_si64((__m64 *)&quantptr[DCTSIZE * 7]); \
\
tmp4 = _mm_mullo_pi16(col1l, quant1l); \
tmp5 = _mm_mullo_pi16(col3l, quant3l); \
tmp6 = _mm_mullo_pi16(col5l, quant5l); \
tmp7 = _mm_mullo_pi16(col7l, quant7l); \
\
z13 = _mm_add_pi16(tmp6, tmp5); \
z10 = _mm_sub_pi16(tmp6, tmp5); \
z11 = _mm_add_pi16(tmp4, tmp7); \
z12 = _mm_sub_pi16(tmp4, tmp7); \
\
DO_IDCT_COMMON() \
\
/* out0=(00 10 20 30), out1=(01 11 21 31) */ \
/* out2=(02 12 22 32), out3=(03 13 23 33) */ \
/* out4=(04 14 24 34), out5=(05 15 25 35) */ \
/* out6=(06 16 26 36), out7=(07 17 27 37) */ \
\
/* Transpose coefficients */ \
\
row01a = _mm_unpacklo_pi16(out0, out1); /* row01a=(00 01 10 11) */ \
row23a = _mm_unpackhi_pi16(out0, out1); /* row23a=(20 21 30 31) */ \
row01d = _mm_unpacklo_pi16(out6, out7); /* row01d=(06 07 16 17) */ \
row23d = _mm_unpackhi_pi16(out6, out7); /* row23d=(26 27 36 37) */ \
\
row01b = _mm_unpacklo_pi16(out2, out3); /* row01b=(02 03 12 13) */ \
row23b = _mm_unpackhi_pi16(out2, out3); /* row23b=(22 23 32 33) */ \
row01c = _mm_unpacklo_pi16(out4, out5); /* row01c=(04 05 14 15) */ \
row23c = _mm_unpackhi_pi16(out4, out5); /* row23c=(24 25 34 35) */ \
\
row0l = _mm_unpacklo_pi32(row01a, row01b); /* row0l=(00 01 02 03) */ \
row1l = _mm_unpackhi_pi32(row01a, row01b); /* row1l=(10 11 12 13) */ \
row2l = _mm_unpacklo_pi32(row23a, row23b); /* row2l=(20 21 22 23) */ \
row3l = _mm_unpackhi_pi32(row23a, row23b); /* row3l=(30 31 32 33) */ \
\
row0h = _mm_unpacklo_pi32(row01c, row01d); /* row0h=(04 05 06 07) */ \
row1h = _mm_unpackhi_pi32(row01c, row01d); /* row1h=(14 15 16 17) */ \
row2h = _mm_unpacklo_pi32(row23c, row23d); /* row2h=(24 25 26 27) */ \
row3h = _mm_unpackhi_pi32(row23c, row23d); /* row3h=(34 35 36 37) */ \
\
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 0], row0l); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 0 + 4], row0h); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 1], row1l); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 1 + 4], row1h); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 2], row2l); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 2 + 4], row2h); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 3], row3l); \
_mm_store_si64((__m64 *)&wsptr[DCTSIZE * 3 + 4], row3h); \
}
#define DO_IDCT_PASS2(ctr) { \
__m64 row0l, row1l, row2l, row3l, row4l, row5l, row6l, row7l; \
__m64 col0123a, col0123b, col0123c, col0123d; \
__m64 col01l, col01h, col23l, col23h; \
__m64 col0, col1, col2, col3; \
__m64 row06, row17, row24, row35; \
\
row0l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 0]); /* (00 01 02 03) */ \
row1l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 1]); /* (10 11 12 13) */ \
row2l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 2]); /* (20 21 22 23) */ \
row3l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 3]); /* (30 31 32 33) */ \
row4l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 4]); /* (40 41 42 43) */ \
row5l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 5]); /* (50 51 52 53) */ \
row6l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 6]); /* (60 61 62 63) */ \
row7l = _mm_load_si64((__m64 *)&wsptr[DCTSIZE * 7]); /* (70 71 72 73) */ \
\
/* Even part */ \
\
tmp10 = _mm_add_pi16(row0l, row4l); \
tmp11 = _mm_sub_pi16(row0l, row4l); \
tmp13 = _mm_add_pi16(row2l, row6l); \
\
tmp12 = _mm_sub_pi16(row2l, row6l); \
tmp12 = _mm_slli_pi16(tmp12, PRE_MULTIPLY_SCALE_BITS); \
tmp12 = _mm_mulhi_pi16(tmp12, PW_F1414); \
tmp12 = _mm_sub_pi16(tmp12, tmp13); \
\
tmp0 = _mm_add_pi16(tmp10, tmp13); \
tmp3 = _mm_sub_pi16(tmp10, tmp13); \
tmp1 = _mm_add_pi16(tmp11, tmp12); \
tmp2 = _mm_sub_pi16(tmp11, tmp12); \
\
/* Odd part */ \
\
z13 = _mm_add_pi16(row5l, row3l); \
z10 = _mm_sub_pi16(row5l, row3l); \
z11 = _mm_add_pi16(row1l, row7l); \
z12 = _mm_sub_pi16(row1l, row7l); \
\
DO_IDCT_COMMON() \
\
/* out0=(00 01 02 03), out1=(10 11 12 13) */ \
/* out2=(20 21 22 23), out3=(30 31 32 33) */ \
/* out4=(40 41 42 43), out5=(50 51 52 53) */ \
/* out6=(60 61 62 63), out7=(70 71 72 73) */ \
\
out0 = _mm_srai_pi16(out0, PASS1_BITS + 3); \
out1 = _mm_srai_pi16(out1, PASS1_BITS + 3); \
out2 = _mm_srai_pi16(out2, PASS1_BITS + 3); \
out3 = _mm_srai_pi16(out3, PASS1_BITS + 3); \
out4 = _mm_srai_pi16(out4, PASS1_BITS + 3); \
out5 = _mm_srai_pi16(out5, PASS1_BITS + 3); \
out6 = _mm_srai_pi16(out6, PASS1_BITS + 3); \
out7 = _mm_srai_pi16(out7, PASS1_BITS + 3); \
\
row06 = _mm_packs_pi16(out0, out6); /* row06=(00 01 02 03 60 61 62 63) */ \
row17 = _mm_packs_pi16(out1, out7); /* row17=(10 11 12 13 70 71 72 73) */ \
row24 = _mm_packs_pi16(out2, out4); /* row24=(20 21 22 23 40 41 42 43) */ \
row35 = _mm_packs_pi16(out3, out5); /* row35=(30 31 32 33 50 51 52 53) */ \
\
row06 = _mm_add_pi8(row06, PB_CENTERJSAMP); \
row17 = _mm_add_pi8(row17, PB_CENTERJSAMP); \
row24 = _mm_add_pi8(row24, PB_CENTERJSAMP); \
row35 = _mm_add_pi8(row35, PB_CENTERJSAMP); \
\
/* Transpose coefficients */ \
\
col0123a = _mm_unpacklo_pi8(row06, row17); /* col0123a=(00 10 01 11 02 12 03 13) */ \
col0123d = _mm_unpackhi_pi8(row06, row17); /* col0123d=(60 70 61 71 62 72 63 73) */ \
col0123b = _mm_unpacklo_pi8(row24, row35); /* col0123b=(20 30 21 31 22 32 23 33) */ \
col0123c = _mm_unpackhi_pi8(row24, row35); /* col0123c=(40 50 41 51 42 52 43 53) */ \
\
col01l = _mm_unpacklo_pi16(col0123a, col0123b); /* col01l=(00 10 20 30 01 11 21 31) */ \
col23l = _mm_unpackhi_pi16(col0123a, col0123b); /* col23l=(02 12 22 32 03 13 23 33) */ \
col01h = _mm_unpacklo_pi16(col0123c, col0123d); /* col01h=(40 50 60 70 41 51 61 71) */ \
col23h = _mm_unpackhi_pi16(col0123c, col0123d); /* col23h=(42 52 62 72 43 53 63 73) */ \
\
col0 = _mm_unpacklo_pi32(col01l, col01h); /* col0=(00 10 20 30 40 50 60 70) */ \
col1 = _mm_unpackhi_pi32(col01l, col01h); /* col1=(01 11 21 31 41 51 61 71) */ \
col2 = _mm_unpacklo_pi32(col23l, col23h); /* col2=(02 12 22 32 42 52 62 72) */ \
col3 = _mm_unpackhi_pi32(col23l, col23h); /* col3=(03 13 23 33 43 53 63 73) */ \
\
_mm_store_si64((__m64 *)(output_buf[ctr + 0] + output_col), col0); \
_mm_store_si64((__m64 *)(output_buf[ctr + 1] + output_col), col1); \
_mm_store_si64((__m64 *)(output_buf[ctr + 2] + output_col), col2); \
_mm_store_si64((__m64 *)(output_buf[ctr + 3] + output_col), col3); \
}
void jsimd_idct_ifast_mmi(void *dct_table, JCOEFPTR coef_block,
JSAMPARRAY output_buf, JDIMENSION output_col)
{
__m64 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
__m64 tmp10, tmp11, tmp12, tmp13;
__m64 out0, out1, out2, out3, out4, out5, out6, out7;
__m64 z5, z10, z11, z12, z13;
JCOEFPTR inptr;
ISLOW_MULT_TYPE *quantptr;
JCOEF *wsptr;
JCOEF workspace[DCTSIZE2]; /* buffers data between passes */
/* Pass 1: process columns. */
inptr = coef_block;
quantptr = (ISLOW_MULT_TYPE *)dct_table;
wsptr = workspace;
DO_IDCT_PASS1(1)
nextcolumn1:
inptr += 4;
quantptr += 4;
wsptr += DCTSIZE * 4;
DO_IDCT_PASS1(2)
nextcolumn2:
/* Pass 2: process rows. */
wsptr = workspace;
DO_IDCT_PASS2(0)
wsptr += 4;
DO_IDCT_PASS2(4)
}