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godot/thirdparty/jpeg-compressor/jpgd_idct.h

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// Copyright 2009 Intel Corporation
// All Rights Reserved
//
// Permission is granted to use, copy, distribute and prepare derivative works of this
// software for any purpose and without fee, provided, that the above copyright notice
// and this statement appear in all copies. Intel makes no representations about the
// suitability of this software for any purpose. THIS SOFTWARE IS PROVIDED "AS IS."
// INTEL SPECIFICALLY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, AND ALL LIABILITY,
// INCLUDING CONSEQUENTIAL AND OTHER INDIRECT DAMAGES, FOR THE USE OF THIS SOFTWARE,
// INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS, AND INCLUDING THE
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Intel does not
// assume any responsibility for any errors which may appear in this software nor any
// responsibility to update it.
//
// From:
// https://software.intel.com/sites/default/files/m/d/4/1/d/8/UsingIntelAVXToImplementIDCT-r1_5.pdf
// https://software.intel.com/file/29048
//
// Requires SSE
//
#ifdef _MSC_VER
#include <intrin.h>
#endif
#include <immintrin.h>
#ifdef _MSC_VER
#define JPGD_SIMD_ALIGN(type, name) __declspec(align(16)) type name
#else
#define JPGD_SIMD_ALIGN(type, name) type name __attribute__((aligned(16)))
#endif
#define BITS_INV_ACC 4
#define SHIFT_INV_ROW 16 - BITS_INV_ACC
#define SHIFT_INV_COL 1 + BITS_INV_ACC
const short IRND_INV_ROW = 1024 * (6 - BITS_INV_ACC); //1 << (SHIFT_INV_ROW-1)
const short IRND_INV_COL = 16 * (BITS_INV_ACC - 3); // 1 << (SHIFT_INV_COL-1)
const short IRND_INV_CORR = IRND_INV_COL - 1; // correction -1.0 and round
JPGD_SIMD_ALIGN(short, shortM128_one_corr[8]) = {1, 1, 1, 1, 1, 1, 1, 1};
JPGD_SIMD_ALIGN(short, shortM128_round_inv_row[8]) = {IRND_INV_ROW, 0, IRND_INV_ROW, 0, IRND_INV_ROW, 0, IRND_INV_ROW, 0};
JPGD_SIMD_ALIGN(short, shortM128_round_inv_col[8]) = {IRND_INV_COL, IRND_INV_COL, IRND_INV_COL, IRND_INV_COL, IRND_INV_COL, IRND_INV_COL, IRND_INV_COL, IRND_INV_COL};
JPGD_SIMD_ALIGN(short, shortM128_round_inv_corr[8])= {IRND_INV_CORR, IRND_INV_CORR, IRND_INV_CORR, IRND_INV_CORR, IRND_INV_CORR, IRND_INV_CORR, IRND_INV_CORR, IRND_INV_CORR};
JPGD_SIMD_ALIGN(short, shortM128_tg_1_16[8]) = {13036, 13036, 13036, 13036, 13036, 13036, 13036, 13036}; // tg * (2<<16) + 0.5
JPGD_SIMD_ALIGN(short, shortM128_tg_2_16[8]) = {27146, 27146, 27146, 27146, 27146, 27146, 27146, 27146}; // tg * (2<<16) + 0.5
JPGD_SIMD_ALIGN(short, shortM128_tg_3_16[8]) = {-21746, -21746, -21746, -21746, -21746, -21746, -21746, -21746}; // tg * (2<<16) + 0.5
JPGD_SIMD_ALIGN(short, shortM128_cos_4_16[8]) = {-19195, -19195, -19195, -19195, -19195, -19195, -19195, -19195};// cos * (2<<16) + 0.5
//-----------------------------------------------------------------------------
// Table for rows 0,4 - constants are multiplied on cos_4_16
// w15 w14 w11 w10 w07 w06 w03 w02
// w29 w28 w25 w24 w21 w20 w17 w16
// w31 w30 w27 w26 w23 w22 w19 w18
//movq -> w05 w04 w01 w00
JPGD_SIMD_ALIGN(short, shortM128_tab_i_04[]) = {
16384, 21407, 16384, 8867,
16384, -8867, 16384, -21407, // w13 w12 w09 w08
16384, 8867, -16384, -21407, // w07 w06 w03 w02
-16384, 21407, 16384, -8867, // w15 w14 w11 w10
22725, 19266, 19266, -4520, // w21 w20 w17 w16
12873, -22725, 4520, -12873, // w29 w28 w25 w24
12873, 4520, -22725, -12873, // w23 w22 w19 w18
4520, 19266, 19266, -22725}; // w31 w30 w27 w26
// Table for rows 1,7 - constants are multiplied on cos_1_16
//movq -> w05 w04 w01 w00
JPGD_SIMD_ALIGN(short, shortM128_tab_i_17[]) = {
22725, 29692, 22725, 12299,
22725, -12299, 22725, -29692, // w13 w12 w09 w08
22725, 12299, -22725, -29692, // w07 w06 w03 w02
-22725, 29692, 22725, -12299, // w15 w14 w11 w10
31521, 26722, 26722, -6270, // w21 w20 w17 w16
17855, -31521, 6270, -17855, // w29 w28 w25 w24
17855, 6270, -31521, -17855, // w23 w22 w19 w18
6270, 26722, 26722, -31521}; // w31 w30 w27 w26
// Table for rows 2,6 - constants are multiplied on cos_2_16
//movq -> w05 w04 w01 w00
JPGD_SIMD_ALIGN(short, shortM128_tab_i_26[]) = {
21407, 27969, 21407, 11585,
21407, -11585, 21407, -27969, // w13 w12 w09 w08
21407, 11585, -21407, -27969, // w07 w06 w03 w02
-21407, 27969, 21407, -11585, // w15 w14 w11 w10
29692, 25172, 25172, -5906, // w21 w20 w17 w16
16819, -29692, 5906, -16819, // w29 w28 w25 w24
16819, 5906, -29692, -16819, // w23 w22 w19 w18
5906, 25172, 25172, -29692}; // w31 w30 w27 w26
// Table for rows 3,5 - constants are multiplied on cos_3_16
//movq -> w05 w04 w01 w00
JPGD_SIMD_ALIGN(short, shortM128_tab_i_35[]) = {
19266, 25172, 19266, 10426,
19266, -10426, 19266, -25172, // w13 w12 w09 w08
19266, 10426, -19266, -25172, // w07 w06 w03 w02
-19266, 25172, 19266, -10426, // w15 w14 w11 w10
26722, 22654, 22654, -5315, // w21 w20 w17 w16
15137, -26722, 5315, -15137, // w29 w28 w25 w24
15137, 5315, -26722, -15137, // w23 w22 w19 w18
5315, 22654, 22654, -26722}; // w31 w30 w27 w26
JPGD_SIMD_ALIGN(short, shortM128_128[8]) = { 128, 128, 128, 128, 128, 128, 128, 128 };
void idctSSEShortU8(const short *pInput, uint8_t * pOutputUB)
{
__m128i r_xmm0, r_xmm4;
__m128i r_xmm1, r_xmm2, r_xmm3, r_xmm5, r_xmm6, r_xmm7;
__m128i row0, row1, row2, row3, row4, row5, row6, row7;
short * pTab_i_04 = shortM128_tab_i_04;
short * pTab_i_26 = shortM128_tab_i_26;
//Get pointers for this input and output
pTab_i_04 = shortM128_tab_i_04;
pTab_i_26 = shortM128_tab_i_26;
//Row 1 and Row 3
r_xmm0 = _mm_load_si128((__m128i *) pInput);
r_xmm4 = _mm_load_si128((__m128i *) (&pInput[2*8]));
// *** Work on the data in xmm0
//low shuffle mask = 0xd8 = 11 01 10 00
//get short 2 and short 0 into ls 32-bits
r_xmm0 = _mm_shufflelo_epi16(r_xmm0, 0xd8);
// copy short 2 and short 0 to all locations
r_xmm1 = _mm_shuffle_epi32(r_xmm0, 0);
// add to those copies
r_xmm1 = _mm_madd_epi16(r_xmm1, *((__m128i *) pTab_i_04));
// shuffle mask = 0x55 = 01 01 01 01
// copy short 3 and short 1 to all locations
r_xmm3 = _mm_shuffle_epi32(r_xmm0, 0x55);
// high shuffle mask = 0xd8 = 11 01 10 00
// get short 6 and short 4 into bit positions 64-95
// get short 7 and short 5 into bit positions 96-127
r_xmm0 = _mm_shufflehi_epi16(r_xmm0, 0xd8);
// add to short 3 and short 1
r_xmm3 = _mm_madd_epi16(r_xmm3, *((__m128i *) &pTab_i_04[16]));
// shuffle mask = 0xaa = 10 10 10 10
// copy short 6 and short 4 to all locations
r_xmm2 = _mm_shuffle_epi32(r_xmm0, 0xaa);
// shuffle mask = 0xaa = 11 11 11 11
// copy short 7 and short 5 to all locations
r_xmm0 = _mm_shuffle_epi32(r_xmm0, 0xff);
// add to short 6 and short 4
r_xmm2 = _mm_madd_epi16(r_xmm2, *((__m128i *) &pTab_i_04[8]));
// *** Work on the data in xmm4
// high shuffle mask = 0xd8 11 01 10 00
// get short 6 and short 4 into bit positions 64-95
// get short 7 and short 5 into bit positions 96-127
r_xmm4 = _mm_shufflehi_epi16(r_xmm4, 0xd8);
// (xmm0 short 2 and short 0 plus pSi) + some constants
r_xmm1 = _mm_add_epi32(r_xmm1, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_shufflelo_epi16(r_xmm4, 0xd8);
r_xmm0 = _mm_madd_epi16(r_xmm0, *((__m128i *) &pTab_i_04[24]));
r_xmm5 = _mm_shuffle_epi32(r_xmm4, 0);
r_xmm6 = _mm_shuffle_epi32(r_xmm4, 0xaa);
r_xmm5 = _mm_madd_epi16(r_xmm5, *((__m128i *) &shortM128_tab_i_26[0]));
r_xmm1 = _mm_add_epi32(r_xmm1, r_xmm2);
r_xmm2 = r_xmm1;
r_xmm7 = _mm_shuffle_epi32(r_xmm4, 0x55);
r_xmm6 = _mm_madd_epi16(r_xmm6, *((__m128i *) &shortM128_tab_i_26[8]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm3);
r_xmm4 = _mm_shuffle_epi32(r_xmm4, 0xff);
r_xmm2 = _mm_sub_epi32(r_xmm2, r_xmm0);
r_xmm7 = _mm_madd_epi16(r_xmm7, *((__m128i *) &shortM128_tab_i_26[16]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm1);
r_xmm2 = _mm_srai_epi32(r_xmm2, 12);
r_xmm5 = _mm_add_epi32(r_xmm5, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_madd_epi16(r_xmm4, *((__m128i *) &shortM128_tab_i_26[24]));
r_xmm5 = _mm_add_epi32(r_xmm5, r_xmm6);
r_xmm6 = r_xmm5;
r_xmm0 = _mm_srai_epi32(r_xmm0, 12);
r_xmm2 = _mm_shuffle_epi32(r_xmm2, 0x1b);
row0 = _mm_packs_epi32(r_xmm0, r_xmm2);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm7);
r_xmm6 = _mm_sub_epi32(r_xmm6, r_xmm4);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm5);
r_xmm6 = _mm_srai_epi32(r_xmm6, 12);
r_xmm4 = _mm_srai_epi32(r_xmm4, 12);
r_xmm6 = _mm_shuffle_epi32(r_xmm6, 0x1b);
row2 = _mm_packs_epi32(r_xmm4, r_xmm6);
//Row 5 and row 7
r_xmm0 = _mm_load_si128((__m128i *) (&pInput[4*8]));
r_xmm4 = _mm_load_si128((__m128i *) (&pInput[6*8]));
r_xmm0 = _mm_shufflelo_epi16(r_xmm0, 0xd8);
r_xmm1 = _mm_shuffle_epi32(r_xmm0, 0);
r_xmm1 = _mm_madd_epi16(r_xmm1, *((__m128i *) pTab_i_04));
r_xmm3 = _mm_shuffle_epi32(r_xmm0, 0x55);
r_xmm0 = _mm_shufflehi_epi16(r_xmm0, 0xd8);
r_xmm3 = _mm_madd_epi16(r_xmm3, *((__m128i *) &pTab_i_04[16]));
r_xmm2 = _mm_shuffle_epi32(r_xmm0, 0xaa);
r_xmm0 = _mm_shuffle_epi32(r_xmm0, 0xff);
r_xmm2 = _mm_madd_epi16(r_xmm2, *((__m128i *) &pTab_i_04[8]));
r_xmm4 = _mm_shufflehi_epi16(r_xmm4, 0xd8);
r_xmm1 = _mm_add_epi32(r_xmm1, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_shufflelo_epi16(r_xmm4, 0xd8);
r_xmm0 = _mm_madd_epi16(r_xmm0, *((__m128i *) &pTab_i_04[24]));
r_xmm5 = _mm_shuffle_epi32(r_xmm4, 0);
r_xmm6 = _mm_shuffle_epi32(r_xmm4, 0xaa);
r_xmm5 = _mm_madd_epi16(r_xmm5, *((__m128i *) &shortM128_tab_i_26[0]));
r_xmm1 = _mm_add_epi32(r_xmm1, r_xmm2);
r_xmm2 = r_xmm1;
r_xmm7 = _mm_shuffle_epi32(r_xmm4, 0x55);
r_xmm6 = _mm_madd_epi16(r_xmm6, *((__m128i *) &shortM128_tab_i_26[8]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm3);
r_xmm4 = _mm_shuffle_epi32(r_xmm4, 0xff);
r_xmm2 = _mm_sub_epi32(r_xmm2, r_xmm0);
r_xmm7 = _mm_madd_epi16(r_xmm7, *((__m128i *) &shortM128_tab_i_26[16]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm1);
r_xmm2 = _mm_srai_epi32(r_xmm2, 12);
r_xmm5 = _mm_add_epi32(r_xmm5, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_madd_epi16(r_xmm4, *((__m128i *) &shortM128_tab_i_26[24]));
r_xmm5 = _mm_add_epi32(r_xmm5, r_xmm6);
r_xmm6 = r_xmm5;
r_xmm0 = _mm_srai_epi32(r_xmm0, 12);
r_xmm2 = _mm_shuffle_epi32(r_xmm2, 0x1b);
row4 = _mm_packs_epi32(r_xmm0, r_xmm2);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm7);
r_xmm6 = _mm_sub_epi32(r_xmm6, r_xmm4);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm5);
r_xmm6 = _mm_srai_epi32(r_xmm6, 12);
r_xmm4 = _mm_srai_epi32(r_xmm4, 12);
r_xmm6 = _mm_shuffle_epi32(r_xmm6, 0x1b);
row6 = _mm_packs_epi32(r_xmm4, r_xmm6);
//Row 4 and row 2
pTab_i_04 = shortM128_tab_i_35;
pTab_i_26 = shortM128_tab_i_17;
r_xmm0 = _mm_load_si128((__m128i *) (&pInput[3*8]));
r_xmm4 = _mm_load_si128((__m128i *) (&pInput[1*8]));
r_xmm0 = _mm_shufflelo_epi16(r_xmm0, 0xd8);
r_xmm1 = _mm_shuffle_epi32(r_xmm0, 0);
r_xmm1 = _mm_madd_epi16(r_xmm1, *((__m128i *) pTab_i_04));
r_xmm3 = _mm_shuffle_epi32(r_xmm0, 0x55);
r_xmm0 = _mm_shufflehi_epi16(r_xmm0, 0xd8);
r_xmm3 = _mm_madd_epi16(r_xmm3, *((__m128i *) &pTab_i_04[16]));
r_xmm2 = _mm_shuffle_epi32(r_xmm0, 0xaa);
r_xmm0 = _mm_shuffle_epi32(r_xmm0, 0xff);
r_xmm2 = _mm_madd_epi16(r_xmm2, *((__m128i *) &pTab_i_04[8]));
r_xmm4 = _mm_shufflehi_epi16(r_xmm4, 0xd8);
r_xmm1 = _mm_add_epi32(r_xmm1, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_shufflelo_epi16(r_xmm4, 0xd8);
r_xmm0 = _mm_madd_epi16(r_xmm0, *((__m128i *) &pTab_i_04[24]));
r_xmm5 = _mm_shuffle_epi32(r_xmm4, 0);
r_xmm6 = _mm_shuffle_epi32(r_xmm4, 0xaa);
r_xmm5 = _mm_madd_epi16(r_xmm5, *((__m128i *) &pTab_i_26[0]));
r_xmm1 = _mm_add_epi32(r_xmm1, r_xmm2);
r_xmm2 = r_xmm1;
r_xmm7 = _mm_shuffle_epi32(r_xmm4, 0x55);
r_xmm6 = _mm_madd_epi16(r_xmm6, *((__m128i *) &pTab_i_26[8]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm3);
r_xmm4 = _mm_shuffle_epi32(r_xmm4, 0xff);
r_xmm2 = _mm_sub_epi32(r_xmm2, r_xmm0);
r_xmm7 = _mm_madd_epi16(r_xmm7, *((__m128i *) &pTab_i_26[16]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm1);
r_xmm2 = _mm_srai_epi32(r_xmm2, 12);
r_xmm5 = _mm_add_epi32(r_xmm5, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_madd_epi16(r_xmm4, *((__m128i *) &pTab_i_26[24]));
r_xmm5 = _mm_add_epi32(r_xmm5, r_xmm6);
r_xmm6 = r_xmm5;
r_xmm0 = _mm_srai_epi32(r_xmm0, 12);
r_xmm2 = _mm_shuffle_epi32(r_xmm2, 0x1b);
row3 = _mm_packs_epi32(r_xmm0, r_xmm2);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm7);
r_xmm6 = _mm_sub_epi32(r_xmm6, r_xmm4);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm5);
r_xmm6 = _mm_srai_epi32(r_xmm6, 12);
r_xmm4 = _mm_srai_epi32(r_xmm4, 12);
r_xmm6 = _mm_shuffle_epi32(r_xmm6, 0x1b);
row1 = _mm_packs_epi32(r_xmm4, r_xmm6);
//Row 6 and row 8
r_xmm0 = _mm_load_si128((__m128i *) (&pInput[5*8]));
r_xmm4 = _mm_load_si128((__m128i *) (&pInput[7*8]));
r_xmm0 = _mm_shufflelo_epi16(r_xmm0, 0xd8);
r_xmm1 = _mm_shuffle_epi32(r_xmm0, 0);
r_xmm1 = _mm_madd_epi16(r_xmm1, *((__m128i *) pTab_i_04));
r_xmm3 = _mm_shuffle_epi32(r_xmm0, 0x55);
r_xmm0 = _mm_shufflehi_epi16(r_xmm0, 0xd8);
r_xmm3 = _mm_madd_epi16(r_xmm3, *((__m128i *) &pTab_i_04[16]));
r_xmm2 = _mm_shuffle_epi32(r_xmm0, 0xaa);
r_xmm0 = _mm_shuffle_epi32(r_xmm0, 0xff);
r_xmm2 = _mm_madd_epi16(r_xmm2, *((__m128i *) &pTab_i_04[8]));
r_xmm4 = _mm_shufflehi_epi16(r_xmm4, 0xd8);
r_xmm1 = _mm_add_epi32(r_xmm1, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_shufflelo_epi16(r_xmm4, 0xd8);
r_xmm0 = _mm_madd_epi16(r_xmm0, *((__m128i *) &pTab_i_04[24]));
r_xmm5 = _mm_shuffle_epi32(r_xmm4, 0);
r_xmm6 = _mm_shuffle_epi32(r_xmm4, 0xaa);
r_xmm5 = _mm_madd_epi16(r_xmm5, *((__m128i *) &pTab_i_26[0]));
r_xmm1 = _mm_add_epi32(r_xmm1, r_xmm2);
r_xmm2 = r_xmm1;
r_xmm7 = _mm_shuffle_epi32(r_xmm4, 0x55);
r_xmm6 = _mm_madd_epi16(r_xmm6, *((__m128i *) &pTab_i_26[8]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm3);
r_xmm4 = _mm_shuffle_epi32(r_xmm4, 0xff);
r_xmm2 = _mm_sub_epi32(r_xmm2, r_xmm0);
r_xmm7 = _mm_madd_epi16(r_xmm7, *((__m128i *) &pTab_i_26[16]));
r_xmm0 = _mm_add_epi32(r_xmm0, r_xmm1);
r_xmm2 = _mm_srai_epi32(r_xmm2, 12);
r_xmm5 = _mm_add_epi32(r_xmm5, *((__m128i *) shortM128_round_inv_row));
r_xmm4 = _mm_madd_epi16(r_xmm4, *((__m128i *) &pTab_i_26[24]));
r_xmm5 = _mm_add_epi32(r_xmm5, r_xmm6);
r_xmm6 = r_xmm5;
r_xmm0 = _mm_srai_epi32(r_xmm0, 12);
r_xmm2 = _mm_shuffle_epi32(r_xmm2, 0x1b);
row5 = _mm_packs_epi32(r_xmm0, r_xmm2);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm7);
r_xmm6 = _mm_sub_epi32(r_xmm6, r_xmm4);
r_xmm4 = _mm_add_epi32(r_xmm4, r_xmm5);
r_xmm6 = _mm_srai_epi32(r_xmm6, 12);
r_xmm4 = _mm_srai_epi32(r_xmm4, 12);
r_xmm6 = _mm_shuffle_epi32(r_xmm6, 0x1b);
row7 = _mm_packs_epi32(r_xmm4, r_xmm6);
r_xmm1 = _mm_load_si128((__m128i *) shortM128_tg_3_16);
r_xmm2 = row5;
r_xmm3 = row3;
r_xmm0 = _mm_mulhi_epi16(row5, r_xmm1);
r_xmm1 = _mm_mulhi_epi16(r_xmm1, r_xmm3);
r_xmm5 = _mm_load_si128((__m128i *) shortM128_tg_1_16);
r_xmm6 = row7;
r_xmm4 = _mm_mulhi_epi16(row7, r_xmm5);
r_xmm0 = _mm_adds_epi16(r_xmm0, r_xmm2);
r_xmm5 = _mm_mulhi_epi16(r_xmm5, row1);
r_xmm1 = _mm_adds_epi16(r_xmm1, r_xmm3);
r_xmm7 = row6;
r_xmm0 = _mm_adds_epi16(r_xmm0, r_xmm3);
r_xmm3 = _mm_load_si128((__m128i *) shortM128_tg_2_16);
r_xmm2 = _mm_subs_epi16(r_xmm2, r_xmm1);
r_xmm7 = _mm_mulhi_epi16(r_xmm7, r_xmm3);
r_xmm1 = r_xmm0;
r_xmm3 = _mm_mulhi_epi16(r_xmm3, row2);
r_xmm5 = _mm_subs_epi16(r_xmm5, r_xmm6);
r_xmm4 = _mm_adds_epi16(r_xmm4, row1);
r_xmm0 = _mm_adds_epi16(r_xmm0, r_xmm4);
r_xmm0 = _mm_adds_epi16(r_xmm0, *((__m128i *) shortM128_one_corr));
r_xmm4 = _mm_subs_epi16(r_xmm4, r_xmm1);
r_xmm6 = r_xmm5;
r_xmm5 = _mm_subs_epi16(r_xmm5, r_xmm2);
r_xmm5 = _mm_adds_epi16(r_xmm5, *((__m128i *) shortM128_one_corr));
r_xmm6 = _mm_adds_epi16(r_xmm6, r_xmm2);
//Intermediate results, needed later
__m128i temp3, temp7;
temp7 = r_xmm0;
r_xmm1 = r_xmm4;
r_xmm0 = _mm_load_si128((__m128i *) shortM128_cos_4_16);
r_xmm4 = _mm_adds_epi16(r_xmm4, r_xmm5);
r_xmm2 = _mm_load_si128((__m128i *) shortM128_cos_4_16);
r_xmm2 = _mm_mulhi_epi16(r_xmm2, r_xmm4);
//Intermediate results, needed later
temp3 = r_xmm6;
r_xmm1 = _mm_subs_epi16(r_xmm1, r_xmm5);
r_xmm7 = _mm_adds_epi16(r_xmm7, row2);
r_xmm3 = _mm_subs_epi16(r_xmm3, row6);
r_xmm6 = row0;
r_xmm0 = _mm_mulhi_epi16(r_xmm0, r_xmm1);
r_xmm5 = row4;
r_xmm5 = _mm_adds_epi16(r_xmm5, r_xmm6);
r_xmm6 = _mm_subs_epi16(r_xmm6, row4);
r_xmm4 = _mm_adds_epi16(r_xmm4, r_xmm2);
r_xmm4 = _mm_or_si128(r_xmm4, *((__m128i *) shortM128_one_corr));
r_xmm0 = _mm_adds_epi16(r_xmm0, r_xmm1);
r_xmm0 = _mm_or_si128(r_xmm0, *((__m128i *) shortM128_one_corr));
r_xmm2 = r_xmm5;
r_xmm5 = _mm_adds_epi16(r_xmm5, r_xmm7);
r_xmm1 = r_xmm6;
r_xmm5 = _mm_adds_epi16(r_xmm5, *((__m128i *) shortM128_round_inv_col));
r_xmm2 = _mm_subs_epi16(r_xmm2, r_xmm7);
r_xmm7 = temp7;
r_xmm6 = _mm_adds_epi16(r_xmm6, r_xmm3);
r_xmm6 = _mm_adds_epi16(r_xmm6, *((__m128i *) shortM128_round_inv_col));
r_xmm7 = _mm_adds_epi16(r_xmm7, r_xmm5);
r_xmm7 = _mm_srai_epi16(r_xmm7, SHIFT_INV_COL);
r_xmm1 = _mm_subs_epi16(r_xmm1, r_xmm3);
r_xmm1 = _mm_adds_epi16(r_xmm1, *((__m128i *) shortM128_round_inv_corr));
r_xmm3 = r_xmm6;
r_xmm2 = _mm_adds_epi16(r_xmm2, *((__m128i *) shortM128_round_inv_corr));
r_xmm6 = _mm_adds_epi16(r_xmm6, r_xmm4);
//Store results for row 0
//_mm_store_si128((__m128i *) pOutput, r_xmm7);
__m128i r0 = r_xmm7;
r_xmm6 = _mm_srai_epi16(r_xmm6, SHIFT_INV_COL);
r_xmm7 = r_xmm1;
r_xmm1 = _mm_adds_epi16(r_xmm1, r_xmm0);
//Store results for row 1
//_mm_store_si128((__m128i *) (&pOutput[1*8]), r_xmm6);
__m128i r1 = r_xmm6;
r_xmm1 = _mm_srai_epi16(r_xmm1, SHIFT_INV_COL);
r_xmm6 = temp3;
r_xmm7 = _mm_subs_epi16(r_xmm7, r_xmm0);
r_xmm7 = _mm_srai_epi16(r_xmm7, SHIFT_INV_COL);
//Store results for row 2
//_mm_store_si128((__m128i *) (&pOutput[2*8]), r_xmm1);
__m128i r2 = r_xmm1;
r_xmm5 = _mm_subs_epi16(r_xmm5, temp7);
r_xmm5 = _mm_srai_epi16(r_xmm5, SHIFT_INV_COL);
//Store results for row 7
//_mm_store_si128((__m128i *) (&pOutput[7*8]), r_xmm5);
__m128i r7 = r_xmm5;
r_xmm3 = _mm_subs_epi16(r_xmm3, r_xmm4);
r_xmm6 = _mm_adds_epi16(r_xmm6, r_xmm2);
r_xmm2 = _mm_subs_epi16(r_xmm2, temp3);
r_xmm6 = _mm_srai_epi16(r_xmm6, SHIFT_INV_COL);
r_xmm2 = _mm_srai_epi16(r_xmm2, SHIFT_INV_COL);
//Store results for row 3
//_mm_store_si128((__m128i *) (&pOutput[3*8]), r_xmm6);
__m128i r3 = r_xmm6;
r_xmm3 = _mm_srai_epi16(r_xmm3, SHIFT_INV_COL);
//Store results for rows 4, 5, and 6
//_mm_store_si128((__m128i *) (&pOutput[4*8]), r_xmm2);
//_mm_store_si128((__m128i *) (&pOutput[5*8]), r_xmm7);
//_mm_store_si128((__m128i *) (&pOutput[6*8]), r_xmm3);
__m128i r4 = r_xmm2;
__m128i r5 = r_xmm7;
__m128i r6 = r_xmm3;
r0 = _mm_add_epi16(*(const __m128i *)shortM128_128, r0);
r1 = _mm_add_epi16(*(const __m128i *)shortM128_128, r1);
r2 = _mm_add_epi16(*(const __m128i *)shortM128_128, r2);
r3 = _mm_add_epi16(*(const __m128i *)shortM128_128, r3);
r4 = _mm_add_epi16(*(const __m128i *)shortM128_128, r4);
r5 = _mm_add_epi16(*(const __m128i *)shortM128_128, r5);
r6 = _mm_add_epi16(*(const __m128i *)shortM128_128, r6);
r7 = _mm_add_epi16(*(const __m128i *)shortM128_128, r7);
((__m128i *)pOutputUB)[0] = _mm_packus_epi16(r0, r1);
((__m128i *)pOutputUB)[1] = _mm_packus_epi16(r2, r3);
((__m128i *)pOutputUB)[2] = _mm_packus_epi16(r4, r5);
((__m128i *)pOutputUB)[3] = _mm_packus_epi16(r6, r7);
}
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