ref: f5628853d7b832d9794f9ea92f2f8c59413c9dce
dir: /vp9/common/x86/vp9_idct_intrin_ssse3.c/
/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#if defined(_MSC_VER) && _MSC_VER <= 1500
// Need to include math.h before calling tmmintrin.h/intrin.h
// in certain versions of MSVS.
#include <math.h>
#endif
#include <tmmintrin.h> // SSSE3
#include "vp9/common/x86/vp9_idct_intrin_sse2.h"
static void idct16_8col(__m128i *in, int round) {
const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64);
const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64);
const __m128i k__cospi_p14_m18 = pair_set_epi16(cospi_14_64, -cospi_18_64);
const __m128i k__cospi_p18_p14 = pair_set_epi16(cospi_18_64, cospi_14_64);
const __m128i k__cospi_p22_m10 = pair_set_epi16(cospi_22_64, -cospi_10_64);
const __m128i k__cospi_p10_p22 = pair_set_epi16(cospi_10_64, cospi_22_64);
const __m128i k__cospi_p06_m26 = pair_set_epi16(cospi_6_64, -cospi_26_64);
const __m128i k__cospi_p26_p06 = pair_set_epi16(cospi_26_64, cospi_6_64);
const __m128i k__cospi_p28_m04 = pair_set_epi16(cospi_28_64, -cospi_4_64);
const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64);
const __m128i k__cospi_p12_m20 = pair_set_epi16(cospi_12_64, -cospi_20_64);
const __m128i k__cospi_p20_p12 = pair_set_epi16(cospi_20_64, cospi_12_64);
const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64);
const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
const __m128i k__cospi_p16_p16_x2 = pair_set_epi16(23170, 23170);
const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
__m128i v[16], u[16], s[16], t[16];
// stage 1
s[0] = in[0];
s[1] = in[8];
s[2] = in[4];
s[3] = in[12];
s[4] = in[2];
s[5] = in[10];
s[6] = in[6];
s[7] = in[14];
s[8] = in[1];
s[9] = in[9];
s[10] = in[5];
s[11] = in[13];
s[12] = in[3];
s[13] = in[11];
s[14] = in[7];
s[15] = in[15];
// stage 2
u[0] = _mm_unpacklo_epi16(s[8], s[15]);
u[1] = _mm_unpackhi_epi16(s[8], s[15]);
u[2] = _mm_unpacklo_epi16(s[9], s[14]);
u[3] = _mm_unpackhi_epi16(s[9], s[14]);
u[4] = _mm_unpacklo_epi16(s[10], s[13]);
u[5] = _mm_unpackhi_epi16(s[10], s[13]);
u[6] = _mm_unpacklo_epi16(s[11], s[12]);
u[7] = _mm_unpackhi_epi16(s[11], s[12]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p30_m02);
v[1] = _mm_madd_epi16(u[1], k__cospi_p30_m02);
v[2] = _mm_madd_epi16(u[0], k__cospi_p02_p30);
v[3] = _mm_madd_epi16(u[1], k__cospi_p02_p30);
v[4] = _mm_madd_epi16(u[2], k__cospi_p14_m18);
v[5] = _mm_madd_epi16(u[3], k__cospi_p14_m18);
v[6] = _mm_madd_epi16(u[2], k__cospi_p18_p14);
v[7] = _mm_madd_epi16(u[3], k__cospi_p18_p14);
v[8] = _mm_madd_epi16(u[4], k__cospi_p22_m10);
v[9] = _mm_madd_epi16(u[5], k__cospi_p22_m10);
v[10] = _mm_madd_epi16(u[4], k__cospi_p10_p22);
v[11] = _mm_madd_epi16(u[5], k__cospi_p10_p22);
v[12] = _mm_madd_epi16(u[6], k__cospi_p06_m26);
v[13] = _mm_madd_epi16(u[7], k__cospi_p06_m26);
v[14] = _mm_madd_epi16(u[6], k__cospi_p26_p06);
v[15] = _mm_madd_epi16(u[7], k__cospi_p26_p06);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING);
u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING);
u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING);
u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING);
u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING);
u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING);
u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING);
u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING);
u[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
u[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
u[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
u[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
u[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
u[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
u[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
u[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
u[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS);
u[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS);
u[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS);
u[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS);
u[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS);
u[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS);
u[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS);
u[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS);
s[8] = _mm_packs_epi32(u[0], u[1]);
s[15] = _mm_packs_epi32(u[2], u[3]);
s[9] = _mm_packs_epi32(u[4], u[5]);
s[14] = _mm_packs_epi32(u[6], u[7]);
s[10] = _mm_packs_epi32(u[8], u[9]);
s[13] = _mm_packs_epi32(u[10], u[11]);
s[11] = _mm_packs_epi32(u[12], u[13]);
s[12] = _mm_packs_epi32(u[14], u[15]);
// stage 3
t[0] = s[0];
t[1] = s[1];
t[2] = s[2];
t[3] = s[3];
u[0] = _mm_unpacklo_epi16(s[4], s[7]);
u[1] = _mm_unpackhi_epi16(s[4], s[7]);
u[2] = _mm_unpacklo_epi16(s[5], s[6]);
u[3] = _mm_unpackhi_epi16(s[5], s[6]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p28_m04);
v[1] = _mm_madd_epi16(u[1], k__cospi_p28_m04);
v[2] = _mm_madd_epi16(u[0], k__cospi_p04_p28);
v[3] = _mm_madd_epi16(u[1], k__cospi_p04_p28);
v[4] = _mm_madd_epi16(u[2], k__cospi_p12_m20);
v[5] = _mm_madd_epi16(u[3], k__cospi_p12_m20);
v[6] = _mm_madd_epi16(u[2], k__cospi_p20_p12);
v[7] = _mm_madd_epi16(u[3], k__cospi_p20_p12);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
u[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
u[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
u[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
u[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
u[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
u[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
u[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
u[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
t[4] = _mm_packs_epi32(u[0], u[1]);
t[7] = _mm_packs_epi32(u[2], u[3]);
t[5] = _mm_packs_epi32(u[4], u[5]);
t[6] = _mm_packs_epi32(u[6], u[7]);
t[8] = _mm_add_epi16(s[8], s[9]);
t[9] = _mm_sub_epi16(s[8], s[9]);
t[10] = _mm_sub_epi16(s[11], s[10]);
t[11] = _mm_add_epi16(s[10], s[11]);
t[12] = _mm_add_epi16(s[12], s[13]);
t[13] = _mm_sub_epi16(s[12], s[13]);
t[14] = _mm_sub_epi16(s[15], s[14]);
t[15] = _mm_add_epi16(s[14], s[15]);
// stage 4
u[0] = _mm_add_epi16(t[0], t[1]);
u[1] = _mm_sub_epi16(t[0], t[1]);
u[2] = _mm_unpacklo_epi16(t[2], t[3]);
u[3] = _mm_unpackhi_epi16(t[2], t[3]);
u[4] = _mm_unpacklo_epi16(t[9], t[14]);
u[5] = _mm_unpackhi_epi16(t[9], t[14]);
u[6] = _mm_unpacklo_epi16(t[10], t[13]);
u[7] = _mm_unpackhi_epi16(t[10], t[13]);
s[0] = _mm_mulhrs_epi16(u[0], k__cospi_p16_p16_x2);
s[1] = _mm_mulhrs_epi16(u[1], k__cospi_p16_p16_x2);
v[4] = _mm_madd_epi16(u[2], k__cospi_p24_m08);
v[5] = _mm_madd_epi16(u[3], k__cospi_p24_m08);
v[6] = _mm_madd_epi16(u[2], k__cospi_p08_p24);
v[7] = _mm_madd_epi16(u[3], k__cospi_p08_p24);
v[8] = _mm_madd_epi16(u[4], k__cospi_m08_p24);
v[9] = _mm_madd_epi16(u[5], k__cospi_m08_p24);
v[10] = _mm_madd_epi16(u[4], k__cospi_p24_p08);
v[11] = _mm_madd_epi16(u[5], k__cospi_p24_p08);
v[12] = _mm_madd_epi16(u[6], k__cospi_m24_m08);
v[13] = _mm_madd_epi16(u[7], k__cospi_m24_m08);
v[14] = _mm_madd_epi16(u[6], k__cospi_m08_p24);
v[15] = _mm_madd_epi16(u[7], k__cospi_m08_p24);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING);
u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING);
u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING);
u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING);
u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING);
u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING);
u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING);
u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING);
u[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
u[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
u[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
u[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
u[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS);
u[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS);
u[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS);
u[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS);
u[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS);
u[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS);
u[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS);
u[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS);
s[2] = _mm_packs_epi32(u[4], u[5]);
s[3] = _mm_packs_epi32(u[6], u[7]);
s[4] = _mm_add_epi16(t[4], t[5]);
s[5] = _mm_sub_epi16(t[4], t[5]);
s[6] = _mm_sub_epi16(t[7], t[6]);
s[7] = _mm_add_epi16(t[6], t[7]);
s[8] = t[8];
s[15] = t[15];
s[9] = _mm_packs_epi32(u[8], u[9]);
s[14] = _mm_packs_epi32(u[10], u[11]);
s[10] = _mm_packs_epi32(u[12], u[13]);
s[13] = _mm_packs_epi32(u[14], u[15]);
s[11] = t[11];
s[12] = t[12];
// stage 5
t[0] = _mm_add_epi16(s[0], s[3]);
t[1] = _mm_add_epi16(s[1], s[2]);
t[2] = _mm_sub_epi16(s[1], s[2]);
t[3] = _mm_sub_epi16(s[0], s[3]);
t[4] = s[4];
t[7] = s[7];
u[0] = _mm_sub_epi16(s[6], s[5]);
u[1] = _mm_add_epi16(s[6], s[5]);
t[5] = _mm_mulhrs_epi16(u[0], k__cospi_p16_p16_x2);
t[6] = _mm_mulhrs_epi16(u[1], k__cospi_p16_p16_x2);
t[8] = _mm_add_epi16(s[8], s[11]);
t[9] = _mm_add_epi16(s[9], s[10]);
t[10] = _mm_sub_epi16(s[9], s[10]);
t[11] = _mm_sub_epi16(s[8], s[11]);
t[12] = _mm_sub_epi16(s[15], s[12]);
t[13] = _mm_sub_epi16(s[14], s[13]);
t[14] = _mm_add_epi16(s[13], s[14]);
t[15] = _mm_add_epi16(s[12], s[15]);
// stage 6
if (round == 1) {
s[0] = _mm_add_epi16(t[0], t[7]);
s[1] = _mm_add_epi16(t[1], t[6]);
s[2] = _mm_add_epi16(t[2], t[5]);
s[3] = _mm_add_epi16(t[3], t[4]);
s[4] = _mm_sub_epi16(t[3], t[4]);
s[5] = _mm_sub_epi16(t[2], t[5]);
s[6] = _mm_sub_epi16(t[1], t[6]);
s[7] = _mm_sub_epi16(t[0], t[7]);
s[8] = t[8];
s[9] = t[9];
u[0] = _mm_unpacklo_epi16(t[10], t[13]);
u[1] = _mm_unpackhi_epi16(t[10], t[13]);
u[2] = _mm_unpacklo_epi16(t[11], t[12]);
u[3] = _mm_unpackhi_epi16(t[11], t[12]);
v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16);
v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16);
v[2] = _mm_madd_epi16(u[0], k__cospi_p16_p16);
v[3] = _mm_madd_epi16(u[1], k__cospi_p16_p16);
v[4] = _mm_madd_epi16(u[2], k__cospi_m16_p16);
v[5] = _mm_madd_epi16(u[3], k__cospi_m16_p16);
v[6] = _mm_madd_epi16(u[2], k__cospi_p16_p16);
v[7] = _mm_madd_epi16(u[3], k__cospi_p16_p16);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
u[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
u[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
u[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
u[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
u[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
u[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
u[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
u[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
s[10] = _mm_packs_epi32(u[0], u[1]);
s[13] = _mm_packs_epi32(u[2], u[3]);
s[11] = _mm_packs_epi32(u[4], u[5]);
s[12] = _mm_packs_epi32(u[6], u[7]);
s[14] = t[14];
s[15] = t[15];
} else {
s[0] = _mm_add_epi16(t[0], t[7]);
s[1] = _mm_add_epi16(t[1], t[6]);
s[2] = _mm_add_epi16(t[2], t[5]);
s[3] = _mm_add_epi16(t[3], t[4]);
s[4] = _mm_sub_epi16(t[3], t[4]);
s[5] = _mm_sub_epi16(t[2], t[5]);
s[6] = _mm_sub_epi16(t[1], t[6]);
s[7] = _mm_sub_epi16(t[0], t[7]);
s[8] = t[8];
s[9] = t[9];
u[0] = _mm_sub_epi16(t[13], t[10]);
u[1] = _mm_add_epi16(t[13], t[10]);
u[2] = _mm_sub_epi16(t[12], t[11]);
u[3] = _mm_add_epi16(t[12], t[11]);
s[10] = _mm_mulhrs_epi16(u[0], k__cospi_p16_p16_x2);
s[13] = _mm_mulhrs_epi16(u[1], k__cospi_p16_p16_x2);
s[11] = _mm_mulhrs_epi16(u[2], k__cospi_p16_p16_x2);
s[12] = _mm_mulhrs_epi16(u[3], k__cospi_p16_p16_x2);
s[14] = t[14];
s[15] = t[15];
}
// stage 7
in[0] = _mm_add_epi16(s[0], s[15]);
in[1] = _mm_add_epi16(s[1], s[14]);
in[2] = _mm_add_epi16(s[2], s[13]);
in[3] = _mm_add_epi16(s[3], s[12]);
in[4] = _mm_add_epi16(s[4], s[11]);
in[5] = _mm_add_epi16(s[5], s[10]);
in[6] = _mm_add_epi16(s[6], s[9]);
in[7] = _mm_add_epi16(s[7], s[8]);
in[8] = _mm_sub_epi16(s[7], s[8]);
in[9] = _mm_sub_epi16(s[6], s[9]);
in[10] = _mm_sub_epi16(s[5], s[10]);
in[11] = _mm_sub_epi16(s[4], s[11]);
in[12] = _mm_sub_epi16(s[3], s[12]);
in[13] = _mm_sub_epi16(s[2], s[13]);
in[14] = _mm_sub_epi16(s[1], s[14]);
in[15] = _mm_sub_epi16(s[0], s[15]);
}
static void idct16_sse2(__m128i *in0, __m128i *in1, int round) {
array_transpose_16x16(in0, in1);
idct16_8col(in0, round);
idct16_8col(in1, round);
}
void vp9_idct16x16_256_add_ssse3(const int16_t *input, uint8_t *dest,
int stride) {
__m128i in0[16], in1[16];
load_buffer_8x16(input, in0);
input += 8;
load_buffer_8x16(input, in1);
idct16_sse2(in0, in1, 0);
idct16_sse2(in0, in1, 1);
write_buffer_8x16(dest, in0, stride);
dest += 8;
write_buffer_8x16(dest, in1, stride);
}