ref: ca9a262b1d7272a32da60273dbc607d0f54e0262
dir: libvpx/vpx_dsp/x86/inv_txfm_sse2.c
/*
* Copyright (c) 2015 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.
*/
#include <emmintrin.h> // SSE2
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/x86/inv_txfm_sse2.h"
#include "vpx_dsp/x86/transpose_sse2.h"
#include "vpx_dsp/x86/txfm_common_sse2.h"
static INLINE void transpose_16bit_4(__m128i *res) {
const __m128i tr0_0 = _mm_unpacklo_epi16(res[0], res[1]);
const __m128i tr0_1 = _mm_unpackhi_epi16(res[0], res[1]);
res[0] = _mm_unpacklo_epi16(tr0_0, tr0_1);
res[1] = _mm_unpackhi_epi16(tr0_0, tr0_1);
}
void vpx_idct4x4_16_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
const __m128i eight = _mm_set1_epi16(8);
__m128i in[2];
// Rows
in[0] = load_input_data8(input);
in[1] = load_input_data8(input + 8);
idct4_sse2(in);
// Columns
idct4_sse2(in);
// Final round and shift
in[0] = _mm_add_epi16(in[0], eight);
in[1] = _mm_add_epi16(in[1], eight);
in[0] = _mm_srai_epi16(in[0], 4);
in[1] = _mm_srai_epi16(in[1], 4);
recon_and_store4x4_sse2(in, dest, stride);
}
void vpx_idct4x4_1_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
const __m128i zero = _mm_setzero_si128();
int a;
__m128i dc_value, d[2];
a = (int)dct_const_round_shift((int16_t)input[0] * cospi_16_64);
a = (int)dct_const_round_shift(a * cospi_16_64);
a = ROUND_POWER_OF_TWO(a, 4);
dc_value = _mm_set1_epi16(a);
// Reconstruction and Store
d[0] = _mm_cvtsi32_si128(*(const int *)(dest));
d[1] = _mm_cvtsi32_si128(*(const int *)(dest + stride * 3));
d[0] = _mm_unpacklo_epi32(d[0],
_mm_cvtsi32_si128(*(const int *)(dest + stride)));
d[1] = _mm_unpacklo_epi32(
_mm_cvtsi32_si128(*(const int *)(dest + stride * 2)), d[1]);
d[0] = _mm_unpacklo_epi8(d[0], zero);
d[1] = _mm_unpacklo_epi8(d[1], zero);
d[0] = _mm_add_epi16(d[0], dc_value);
d[1] = _mm_add_epi16(d[1], dc_value);
d[0] = _mm_packus_epi16(d[0], d[1]);
*(int *)dest = _mm_cvtsi128_si32(d[0]);
d[0] = _mm_srli_si128(d[0], 4);
*(int *)(dest + stride) = _mm_cvtsi128_si32(d[0]);
d[0] = _mm_srli_si128(d[0], 4);
*(int *)(dest + stride * 2) = _mm_cvtsi128_si32(d[0]);
d[0] = _mm_srli_si128(d[0], 4);
*(int *)(dest + stride * 3) = _mm_cvtsi128_si32(d[0]);
}
void idct4_sse2(__m128i *const in) {
const __m128i k__cospi_p16_p16 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_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);
__m128i u[2];
transpose_16bit_4(in);
// stage 1
u[0] = _mm_unpacklo_epi16(in[0], in[1]);
u[1] = _mm_unpackhi_epi16(in[0], in[1]);
u[0] = idct_calc_wraplow_sse2(k__cospi_p16_p16, k__cospi_p16_m16, u[0]);
u[1] = idct_calc_wraplow_sse2(k__cospi_p08_p24, k__cospi_p24_m08, u[1]);
// stage 2
in[0] = _mm_add_epi16(u[0], u[1]);
in[1] = _mm_sub_epi16(u[0], u[1]);
in[1] = _mm_shuffle_epi32(in[1], 0x4E);
}
void iadst4_sse2(__m128i *const in) {
const __m128i k__sinpi_1_3 = pair_set_epi16(sinpi_1_9, sinpi_3_9);
const __m128i k__sinpi_4_2 = pair_set_epi16(sinpi_4_9, sinpi_2_9);
const __m128i k__sinpi_2_3 = pair_set_epi16(sinpi_2_9, sinpi_3_9);
const __m128i k__sinpi_1_4 = pair_set_epi16(sinpi_1_9, sinpi_4_9);
const __m128i k__sinpi_12_n3 =
pair_set_epi16(sinpi_1_9 + sinpi_2_9, -sinpi_3_9);
__m128i u[4], v[5];
// 00 01 20 21 02 03 22 23
// 10 11 30 31 12 13 32 33
const __m128i tr0_0 = _mm_unpacklo_epi32(in[0], in[1]);
const __m128i tr0_1 = _mm_unpackhi_epi32(in[0], in[1]);
// 00 01 10 11 20 21 30 31
// 02 03 12 13 22 23 32 33
in[0] = _mm_unpacklo_epi32(tr0_0, tr0_1);
in[1] = _mm_unpackhi_epi32(tr0_0, tr0_1);
v[0] = _mm_madd_epi16(in[0], k__sinpi_1_3); // s_1 * x0 + s_3 * x1
v[1] = _mm_madd_epi16(in[1], k__sinpi_4_2); // s_4 * x2 + s_2 * x3
v[2] = _mm_madd_epi16(in[0], k__sinpi_2_3); // s_2 * x0 + s_3 * x1
v[3] = _mm_madd_epi16(in[1], k__sinpi_1_4); // s_1 * x2 + s_4 * x3
v[4] = _mm_madd_epi16(in[0], k__sinpi_12_n3); // (s_1 + s_2) * x0 - s_3 * x1
in[0] = _mm_sub_epi16(in[0], in[1]); // x0 - x2
in[1] = _mm_srli_epi32(in[1], 16);
in[0] = _mm_add_epi16(in[0], in[1]);
in[0] = _mm_slli_epi32(in[0], 16); // x0 - x2 + x3
u[0] = _mm_add_epi32(v[0], v[1]);
u[1] = _mm_sub_epi32(v[2], v[3]);
u[2] = _mm_madd_epi16(in[0], k__sinpi_1_3);
u[3] = _mm_sub_epi32(v[1], v[3]);
u[3] = _mm_add_epi32(u[3], v[4]);
u[0] = dct_const_round_shift_sse2(u[0]);
u[1] = dct_const_round_shift_sse2(u[1]);
u[2] = dct_const_round_shift_sse2(u[2]);
u[3] = dct_const_round_shift_sse2(u[3]);
in[0] = _mm_packs_epi32(u[0], u[1]);
in[1] = _mm_packs_epi32(u[2], u[3]);
}
static INLINE void load_buffer_8x8(const tran_low_t *const input,
__m128i *const in) {
in[0] = load_input_data8(input + 0 * 8);
in[1] = load_input_data8(input + 1 * 8);
in[2] = load_input_data8(input + 2 * 8);
in[3] = load_input_data8(input + 3 * 8);
in[4] = load_input_data8(input + 4 * 8);
in[5] = load_input_data8(input + 5 * 8);
in[6] = load_input_data8(input + 6 * 8);
in[7] = load_input_data8(input + 7 * 8);
}
void vpx_idct8x8_64_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i in[8];
int i;
// Load input data.
load_buffer_8x8(input, in);
// 2-D
for (i = 0; i < 2; i++) {
vpx_idct8_sse2(in);
}
write_buffer_8x8(in, dest, stride);
}
void vpx_idct8x8_12_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i io[8];
io[0] = load_input_data4(input + 0 * 8);
io[1] = load_input_data4(input + 1 * 8);
io[2] = load_input_data4(input + 2 * 8);
io[3] = load_input_data4(input + 3 * 8);
idct8x8_12_add_kernel_sse2(io);
write_buffer_8x8(io, dest, stride);
}
static INLINE void recon_and_store_8_dual(uint8_t *const dest,
const __m128i in_x,
const int stride) {
const __m128i zero = _mm_setzero_si128();
__m128i d0, d1;
d0 = _mm_loadl_epi64((__m128i *)(dest + 0 * stride));
d1 = _mm_loadl_epi64((__m128i *)(dest + 1 * stride));
d0 = _mm_unpacklo_epi8(d0, zero);
d1 = _mm_unpacklo_epi8(d1, zero);
d0 = _mm_add_epi16(in_x, d0);
d1 = _mm_add_epi16(in_x, d1);
d0 = _mm_packus_epi16(d0, d1);
_mm_storel_epi64((__m128i *)(dest + 0 * stride), d0);
_mm_storeh_pi((__m64 *)(dest + 1 * stride), _mm_castsi128_ps(d0));
}
void vpx_idct8x8_1_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i dc_value;
tran_high_t a1;
tran_low_t out =
WRAPLOW(dct_const_round_shift((int16_t)input[0] * cospi_16_64));
out = WRAPLOW(dct_const_round_shift(out * cospi_16_64));
a1 = ROUND_POWER_OF_TWO(out, 5);
dc_value = _mm_set1_epi16((int16_t)a1);
recon_and_store_8_dual(dest, dc_value, stride);
dest += 2 * stride;
recon_and_store_8_dual(dest, dc_value, stride);
dest += 2 * stride;
recon_and_store_8_dual(dest, dc_value, stride);
dest += 2 * stride;
recon_and_store_8_dual(dest, dc_value, stride);
}
void vpx_idct8_sse2(__m128i *const in) {
// 8x8 Transpose is copied from vpx_fdct8x8_sse2()
transpose_16bit_8x8(in, in);
// 4-stage 1D idct8x8
idct8(in, in);
}
void iadst8_sse2(__m128i *const in) {
const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64);
const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64);
const __m128i k__cospi_p10_p22 = pair_set_epi16(cospi_10_64, cospi_22_64);
const __m128i k__cospi_p22_m10 = pair_set_epi16(cospi_22_64, -cospi_10_64);
const __m128i k__cospi_p18_p14 = pair_set_epi16(cospi_18_64, cospi_14_64);
const __m128i k__cospi_p14_m18 = pair_set_epi16(cospi_14_64, -cospi_18_64);
const __m128i k__cospi_p26_p06 = pair_set_epi16(cospi_26_64, cospi_6_64);
const __m128i k__cospi_p06_m26 = pair_set_epi16(cospi_6_64, -cospi_26_64);
const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64);
const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64);
const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
const __m128i kZero = _mm_set1_epi16(0);
__m128i s[8], u[16], v[8], w[16];
// transpose
transpose_16bit_8x8(in, in);
// column transformation
// stage 1
// interleave and multiply/add into 32-bit integer
s[0] = _mm_unpacklo_epi16(in[7], in[0]);
s[1] = _mm_unpackhi_epi16(in[7], in[0]);
s[2] = _mm_unpacklo_epi16(in[5], in[2]);
s[3] = _mm_unpackhi_epi16(in[5], in[2]);
s[4] = _mm_unpacklo_epi16(in[3], in[4]);
s[5] = _mm_unpackhi_epi16(in[3], in[4]);
s[6] = _mm_unpacklo_epi16(in[1], in[6]);
s[7] = _mm_unpackhi_epi16(in[1], in[6]);
u[0] = _mm_madd_epi16(s[0], k__cospi_p02_p30);
u[1] = _mm_madd_epi16(s[1], k__cospi_p02_p30);
u[2] = _mm_madd_epi16(s[0], k__cospi_p30_m02);
u[3] = _mm_madd_epi16(s[1], k__cospi_p30_m02);
u[4] = _mm_madd_epi16(s[2], k__cospi_p10_p22);
u[5] = _mm_madd_epi16(s[3], k__cospi_p10_p22);
u[6] = _mm_madd_epi16(s[2], k__cospi_p22_m10);
u[7] = _mm_madd_epi16(s[3], k__cospi_p22_m10);
u[8] = _mm_madd_epi16(s[4], k__cospi_p18_p14);
u[9] = _mm_madd_epi16(s[5], k__cospi_p18_p14);
u[10] = _mm_madd_epi16(s[4], k__cospi_p14_m18);
u[11] = _mm_madd_epi16(s[5], k__cospi_p14_m18);
u[12] = _mm_madd_epi16(s[6], k__cospi_p26_p06);
u[13] = _mm_madd_epi16(s[7], k__cospi_p26_p06);
u[14] = _mm_madd_epi16(s[6], k__cospi_p06_m26);
u[15] = _mm_madd_epi16(s[7], k__cospi_p06_m26);
// addition
w[0] = _mm_add_epi32(u[0], u[8]);
w[1] = _mm_add_epi32(u[1], u[9]);
w[2] = _mm_add_epi32(u[2], u[10]);
w[3] = _mm_add_epi32(u[3], u[11]);
w[4] = _mm_add_epi32(u[4], u[12]);
w[5] = _mm_add_epi32(u[5], u[13]);
w[6] = _mm_add_epi32(u[6], u[14]);
w[7] = _mm_add_epi32(u[7], u[15]);
w[8] = _mm_sub_epi32(u[0], u[8]);
w[9] = _mm_sub_epi32(u[1], u[9]);
w[10] = _mm_sub_epi32(u[2], u[10]);
w[11] = _mm_sub_epi32(u[3], u[11]);
w[12] = _mm_sub_epi32(u[4], u[12]);
w[13] = _mm_sub_epi32(u[5], u[13]);
w[14] = _mm_sub_epi32(u[6], u[14]);
w[15] = _mm_sub_epi32(u[7], u[15]);
// shift and rounding
u[0] = dct_const_round_shift_sse2(w[0]);
u[1] = dct_const_round_shift_sse2(w[1]);
u[2] = dct_const_round_shift_sse2(w[2]);
u[3] = dct_const_round_shift_sse2(w[3]);
u[4] = dct_const_round_shift_sse2(w[4]);
u[5] = dct_const_round_shift_sse2(w[5]);
u[6] = dct_const_round_shift_sse2(w[6]);
u[7] = dct_const_round_shift_sse2(w[7]);
u[8] = dct_const_round_shift_sse2(w[8]);
u[9] = dct_const_round_shift_sse2(w[9]);
u[10] = dct_const_round_shift_sse2(w[10]);
u[11] = dct_const_round_shift_sse2(w[11]);
u[12] = dct_const_round_shift_sse2(w[12]);
u[13] = dct_const_round_shift_sse2(w[13]);
u[14] = dct_const_round_shift_sse2(w[14]);
u[15] = dct_const_round_shift_sse2(w[15]);
// back to 16-bit and pack 8 integers into __m128i
in[0] = _mm_packs_epi32(u[0], u[1]);
in[1] = _mm_packs_epi32(u[2], u[3]);
in[2] = _mm_packs_epi32(u[4], u[5]);
in[3] = _mm_packs_epi32(u[6], u[7]);
in[4] = _mm_packs_epi32(u[8], u[9]);
in[5] = _mm_packs_epi32(u[10], u[11]);
in[6] = _mm_packs_epi32(u[12], u[13]);
in[7] = _mm_packs_epi32(u[14], u[15]);
// stage 2
s[0] = _mm_add_epi16(in[0], in[2]);
s[1] = _mm_add_epi16(in[1], in[3]);
s[2] = _mm_sub_epi16(in[0], in[2]);
s[3] = _mm_sub_epi16(in[1], in[3]);
u[0] = _mm_unpacklo_epi16(in[4], in[5]);
u[1] = _mm_unpackhi_epi16(in[4], in[5]);
u[2] = _mm_unpacklo_epi16(in[6], in[7]);
u[3] = _mm_unpackhi_epi16(in[6], in[7]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p08_p24);
v[1] = _mm_madd_epi16(u[1], k__cospi_p08_p24);
v[2] = _mm_madd_epi16(u[0], k__cospi_p24_m08);
v[3] = _mm_madd_epi16(u[1], k__cospi_p24_m08);
v[4] = _mm_madd_epi16(u[2], k__cospi_m24_p08);
v[5] = _mm_madd_epi16(u[3], k__cospi_m24_p08);
v[6] = _mm_madd_epi16(u[2], k__cospi_p08_p24);
v[7] = _mm_madd_epi16(u[3], k__cospi_p08_p24);
w[0] = _mm_add_epi32(v[0], v[4]);
w[1] = _mm_add_epi32(v[1], v[5]);
w[2] = _mm_add_epi32(v[2], v[6]);
w[3] = _mm_add_epi32(v[3], v[7]);
w[4] = _mm_sub_epi32(v[0], v[4]);
w[5] = _mm_sub_epi32(v[1], v[5]);
w[6] = _mm_sub_epi32(v[2], v[6]);
w[7] = _mm_sub_epi32(v[3], v[7]);
u[0] = dct_const_round_shift_sse2(w[0]);
u[1] = dct_const_round_shift_sse2(w[1]);
u[2] = dct_const_round_shift_sse2(w[2]);
u[3] = dct_const_round_shift_sse2(w[3]);
u[4] = dct_const_round_shift_sse2(w[4]);
u[5] = dct_const_round_shift_sse2(w[5]);
u[6] = dct_const_round_shift_sse2(w[6]);
u[7] = dct_const_round_shift_sse2(w[7]);
// back to 16-bit intergers
s[4] = _mm_packs_epi32(u[0], u[1]);
s[5] = _mm_packs_epi32(u[2], u[3]);
s[6] = _mm_packs_epi32(u[4], u[5]);
s[7] = _mm_packs_epi32(u[6], u[7]);
// stage 3
u[0] = _mm_unpacklo_epi16(s[2], s[3]);
u[1] = _mm_unpackhi_epi16(s[2], s[3]);
u[2] = _mm_unpacklo_epi16(s[6], s[7]);
u[3] = _mm_unpackhi_epi16(s[6], s[7]);
s[2] = idct_calc_wraplow_sse2(u[0], u[1], k__cospi_p16_p16);
s[3] = idct_calc_wraplow_sse2(u[0], u[1], k__cospi_p16_m16);
s[6] = idct_calc_wraplow_sse2(u[2], u[3], k__cospi_p16_p16);
s[7] = idct_calc_wraplow_sse2(u[2], u[3], k__cospi_p16_m16);
in[0] = s[0];
in[1] = _mm_sub_epi16(kZero, s[4]);
in[2] = s[6];
in[3] = _mm_sub_epi16(kZero, s[2]);
in[4] = s[3];
in[5] = _mm_sub_epi16(kZero, s[7]);
in[6] = s[5];
in[7] = _mm_sub_epi16(kZero, s[1]);
}
static INLINE void idct16_load8x8(const tran_low_t *const input,
__m128i *const in) {
in[0] = load_input_data8(input + 0 * 16);
in[1] = load_input_data8(input + 1 * 16);
in[2] = load_input_data8(input + 2 * 16);
in[3] = load_input_data8(input + 3 * 16);
in[4] = load_input_data8(input + 4 * 16);
in[5] = load_input_data8(input + 5 * 16);
in[6] = load_input_data8(input + 6 * 16);
in[7] = load_input_data8(input + 7 * 16);
}
void vpx_idct16x16_256_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i l[16], r[16], out[16], *in;
int i;
in = l;
for (i = 0; i < 2; i++) {
idct16_load8x8(input, in);
transpose_16bit_8x8(in, in);
idct16_load8x8(input + 8, in + 8);
transpose_16bit_8x8(in + 8, in + 8);
idct16_8col(in, in);
in = r;
input += 128;
}
for (i = 0; i < 16; i += 8) {
int j;
transpose_16bit_8x8(l + i, out);
transpose_16bit_8x8(r + i, out + 8);
idct16_8col(out, out);
for (j = 0; j < 16; ++j) {
write_buffer_8x1(dest + j * stride, out[j]);
}
dest += 8;
}
}
void vpx_idct16x16_38_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i in[16], temp[16], out[16];
int i;
idct16_load8x8(input, in);
transpose_16bit_8x8(in, in);
for (i = 8; i < 16; i++) {
in[i] = _mm_setzero_si128();
}
idct16_8col(in, temp);
for (i = 0; i < 16; i += 8) {
int j;
transpose_16bit_8x8(temp + i, in);
idct16_8col(in, out);
for (j = 0; j < 16; ++j) {
write_buffer_8x1(dest + j * stride, out[j]);
}
dest += 8;
}
}
void vpx_idct16x16_10_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i in[16], l[16];
int i;
// First 1-D inverse DCT
// Load input data.
in[0] = load_input_data4(input + 0 * 16);
in[1] = load_input_data4(input + 1 * 16);
in[2] = load_input_data4(input + 2 * 16);
in[3] = load_input_data4(input + 3 * 16);
idct16x16_10_pass1(in, l);
// Second 1-D inverse transform, performed per 8x16 block
for (i = 0; i < 16; i += 8) {
int j;
idct16x16_10_pass2(l + i, in);
for (j = 0; j < 16; ++j) {
write_buffer_8x1(dest + j * stride, in[j]);
}
dest += 8;
}
}
static INLINE void recon_and_store_16(uint8_t *const dest, const __m128i in_x) {
const __m128i zero = _mm_setzero_si128();
__m128i d0, d1;
d0 = _mm_load_si128((__m128i *)(dest));
d1 = _mm_unpackhi_epi8(d0, zero);
d0 = _mm_unpacklo_epi8(d0, zero);
d0 = _mm_add_epi16(in_x, d0);
d1 = _mm_add_epi16(in_x, d1);
d0 = _mm_packus_epi16(d0, d1);
_mm_store_si128((__m128i *)(dest), d0);
}
void vpx_idct16x16_1_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i dc_value;
int i;
tran_high_t a1;
tran_low_t out =
WRAPLOW(dct_const_round_shift((int16_t)input[0] * cospi_16_64));
out = WRAPLOW(dct_const_round_shift(out * cospi_16_64));
a1 = ROUND_POWER_OF_TWO(out, 6);
dc_value = _mm_set1_epi16((int16_t)a1);
for (i = 0; i < 16; ++i) {
recon_and_store_16(dest, dc_value);
dest += stride;
}
}
void vpx_iadst16_8col_sse2(__m128i *const in) {
// perform 16x16 1-D ADST for 8 columns
__m128i s[16], x[16], u[32], v[32];
const __m128i k__cospi_p01_p31 = pair_set_epi16(cospi_1_64, cospi_31_64);
const __m128i k__cospi_p31_m01 = pair_set_epi16(cospi_31_64, -cospi_1_64);
const __m128i k__cospi_p05_p27 = pair_set_epi16(cospi_5_64, cospi_27_64);
const __m128i k__cospi_p27_m05 = pair_set_epi16(cospi_27_64, -cospi_5_64);
const __m128i k__cospi_p09_p23 = pair_set_epi16(cospi_9_64, cospi_23_64);
const __m128i k__cospi_p23_m09 = pair_set_epi16(cospi_23_64, -cospi_9_64);
const __m128i k__cospi_p13_p19 = pair_set_epi16(cospi_13_64, cospi_19_64);
const __m128i k__cospi_p19_m13 = pair_set_epi16(cospi_19_64, -cospi_13_64);
const __m128i k__cospi_p17_p15 = pair_set_epi16(cospi_17_64, cospi_15_64);
const __m128i k__cospi_p15_m17 = pair_set_epi16(cospi_15_64, -cospi_17_64);
const __m128i k__cospi_p21_p11 = pair_set_epi16(cospi_21_64, cospi_11_64);
const __m128i k__cospi_p11_m21 = pair_set_epi16(cospi_11_64, -cospi_21_64);
const __m128i k__cospi_p25_p07 = pair_set_epi16(cospi_25_64, cospi_7_64);
const __m128i k__cospi_p07_m25 = pair_set_epi16(cospi_7_64, -cospi_25_64);
const __m128i k__cospi_p29_p03 = pair_set_epi16(cospi_29_64, cospi_3_64);
const __m128i k__cospi_p03_m29 = pair_set_epi16(cospi_3_64, -cospi_29_64);
const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64);
const __m128i k__cospi_p28_m04 = pair_set_epi16(cospi_28_64, -cospi_4_64);
const __m128i k__cospi_p20_p12 = pair_set_epi16(cospi_20_64, cospi_12_64);
const __m128i k__cospi_p12_m20 = pair_set_epi16(cospi_12_64, -cospi_20_64);
const __m128i k__cospi_m28_p04 = pair_set_epi16(-cospi_28_64, cospi_4_64);
const __m128i k__cospi_m12_p20 = pair_set_epi16(-cospi_12_64, cospi_20_64);
const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64);
const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64);
const __m128i k__cospi_m16_m16 = _mm_set1_epi16(-cospi_16_64);
const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
const __m128i kZero = _mm_set1_epi16(0);
u[0] = _mm_unpacklo_epi16(in[15], in[0]);
u[1] = _mm_unpackhi_epi16(in[15], in[0]);
u[2] = _mm_unpacklo_epi16(in[13], in[2]);
u[3] = _mm_unpackhi_epi16(in[13], in[2]);
u[4] = _mm_unpacklo_epi16(in[11], in[4]);
u[5] = _mm_unpackhi_epi16(in[11], in[4]);
u[6] = _mm_unpacklo_epi16(in[9], in[6]);
u[7] = _mm_unpackhi_epi16(in[9], in[6]);
u[8] = _mm_unpacklo_epi16(in[7], in[8]);
u[9] = _mm_unpackhi_epi16(in[7], in[8]);
u[10] = _mm_unpacklo_epi16(in[5], in[10]);
u[11] = _mm_unpackhi_epi16(in[5], in[10]);
u[12] = _mm_unpacklo_epi16(in[3], in[12]);
u[13] = _mm_unpackhi_epi16(in[3], in[12]);
u[14] = _mm_unpacklo_epi16(in[1], in[14]);
u[15] = _mm_unpackhi_epi16(in[1], in[14]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p01_p31);
v[1] = _mm_madd_epi16(u[1], k__cospi_p01_p31);
v[2] = _mm_madd_epi16(u[0], k__cospi_p31_m01);
v[3] = _mm_madd_epi16(u[1], k__cospi_p31_m01);
v[4] = _mm_madd_epi16(u[2], k__cospi_p05_p27);
v[5] = _mm_madd_epi16(u[3], k__cospi_p05_p27);
v[6] = _mm_madd_epi16(u[2], k__cospi_p27_m05);
v[7] = _mm_madd_epi16(u[3], k__cospi_p27_m05);
v[8] = _mm_madd_epi16(u[4], k__cospi_p09_p23);
v[9] = _mm_madd_epi16(u[5], k__cospi_p09_p23);
v[10] = _mm_madd_epi16(u[4], k__cospi_p23_m09);
v[11] = _mm_madd_epi16(u[5], k__cospi_p23_m09);
v[12] = _mm_madd_epi16(u[6], k__cospi_p13_p19);
v[13] = _mm_madd_epi16(u[7], k__cospi_p13_p19);
v[14] = _mm_madd_epi16(u[6], k__cospi_p19_m13);
v[15] = _mm_madd_epi16(u[7], k__cospi_p19_m13);
v[16] = _mm_madd_epi16(u[8], k__cospi_p17_p15);
v[17] = _mm_madd_epi16(u[9], k__cospi_p17_p15);
v[18] = _mm_madd_epi16(u[8], k__cospi_p15_m17);
v[19] = _mm_madd_epi16(u[9], k__cospi_p15_m17);
v[20] = _mm_madd_epi16(u[10], k__cospi_p21_p11);
v[21] = _mm_madd_epi16(u[11], k__cospi_p21_p11);
v[22] = _mm_madd_epi16(u[10], k__cospi_p11_m21);
v[23] = _mm_madd_epi16(u[11], k__cospi_p11_m21);
v[24] = _mm_madd_epi16(u[12], k__cospi_p25_p07);
v[25] = _mm_madd_epi16(u[13], k__cospi_p25_p07);
v[26] = _mm_madd_epi16(u[12], k__cospi_p07_m25);
v[27] = _mm_madd_epi16(u[13], k__cospi_p07_m25);
v[28] = _mm_madd_epi16(u[14], k__cospi_p29_p03);
v[29] = _mm_madd_epi16(u[15], k__cospi_p29_p03);
v[30] = _mm_madd_epi16(u[14], k__cospi_p03_m29);
v[31] = _mm_madd_epi16(u[15], k__cospi_p03_m29);
u[0] = _mm_add_epi32(v[0], v[16]);
u[1] = _mm_add_epi32(v[1], v[17]);
u[2] = _mm_add_epi32(v[2], v[18]);
u[3] = _mm_add_epi32(v[3], v[19]);
u[4] = _mm_add_epi32(v[4], v[20]);
u[5] = _mm_add_epi32(v[5], v[21]);
u[6] = _mm_add_epi32(v[6], v[22]);
u[7] = _mm_add_epi32(v[7], v[23]);
u[8] = _mm_add_epi32(v[8], v[24]);
u[9] = _mm_add_epi32(v[9], v[25]);
u[10] = _mm_add_epi32(v[10], v[26]);
u[11] = _mm_add_epi32(v[11], v[27]);
u[12] = _mm_add_epi32(v[12], v[28]);
u[13] = _mm_add_epi32(v[13], v[29]);
u[14] = _mm_add_epi32(v[14], v[30]);
u[15] = _mm_add_epi32(v[15], v[31]);
u[16] = _mm_sub_epi32(v[0], v[16]);
u[17] = _mm_sub_epi32(v[1], v[17]);
u[18] = _mm_sub_epi32(v[2], v[18]);
u[19] = _mm_sub_epi32(v[3], v[19]);
u[20] = _mm_sub_epi32(v[4], v[20]);
u[21] = _mm_sub_epi32(v[5], v[21]);
u[22] = _mm_sub_epi32(v[6], v[22]);
u[23] = _mm_sub_epi32(v[7], v[23]);
u[24] = _mm_sub_epi32(v[8], v[24]);
u[25] = _mm_sub_epi32(v[9], v[25]);
u[26] = _mm_sub_epi32(v[10], v[26]);
u[27] = _mm_sub_epi32(v[11], v[27]);
u[28] = _mm_sub_epi32(v[12], v[28]);
u[29] = _mm_sub_epi32(v[13], v[29]);
u[30] = _mm_sub_epi32(v[14], v[30]);
u[31] = _mm_sub_epi32(v[15], v[31]);
u[0] = dct_const_round_shift_sse2(u[0]);
u[1] = dct_const_round_shift_sse2(u[1]);
u[2] = dct_const_round_shift_sse2(u[2]);
u[3] = dct_const_round_shift_sse2(u[3]);
u[4] = dct_const_round_shift_sse2(u[4]);
u[5] = dct_const_round_shift_sse2(u[5]);
u[6] = dct_const_round_shift_sse2(u[6]);
u[7] = dct_const_round_shift_sse2(u[7]);
u[8] = dct_const_round_shift_sse2(u[8]);
u[9] = dct_const_round_shift_sse2(u[9]);
u[10] = dct_const_round_shift_sse2(u[10]);
u[11] = dct_const_round_shift_sse2(u[11]);
u[12] = dct_const_round_shift_sse2(u[12]);
u[13] = dct_const_round_shift_sse2(u[13]);
u[14] = dct_const_round_shift_sse2(u[14]);
u[15] = dct_const_round_shift_sse2(u[15]);
u[16] = dct_const_round_shift_sse2(u[16]);
u[17] = dct_const_round_shift_sse2(u[17]);
u[18] = dct_const_round_shift_sse2(u[18]);
u[19] = dct_const_round_shift_sse2(u[19]);
u[20] = dct_const_round_shift_sse2(u[20]);
u[21] = dct_const_round_shift_sse2(u[21]);
u[22] = dct_const_round_shift_sse2(u[22]);
u[23] = dct_const_round_shift_sse2(u[23]);
u[24] = dct_const_round_shift_sse2(u[24]);
u[25] = dct_const_round_shift_sse2(u[25]);
u[26] = dct_const_round_shift_sse2(u[26]);
u[27] = dct_const_round_shift_sse2(u[27]);
u[28] = dct_const_round_shift_sse2(u[28]);
u[29] = dct_const_round_shift_sse2(u[29]);
u[30] = dct_const_round_shift_sse2(u[30]);
u[31] = dct_const_round_shift_sse2(u[31]);
s[0] = _mm_packs_epi32(u[0], u[1]);
s[1] = _mm_packs_epi32(u[2], u[3]);
s[2] = _mm_packs_epi32(u[4], u[5]);
s[3] = _mm_packs_epi32(u[6], u[7]);
s[4] = _mm_packs_epi32(u[8], u[9]);
s[5] = _mm_packs_epi32(u[10], u[11]);
s[6] = _mm_packs_epi32(u[12], u[13]);
s[7] = _mm_packs_epi32(u[14], u[15]);
s[8] = _mm_packs_epi32(u[16], u[17]);
s[9] = _mm_packs_epi32(u[18], u[19]);
s[10] = _mm_packs_epi32(u[20], u[21]);
s[11] = _mm_packs_epi32(u[22], u[23]);
s[12] = _mm_packs_epi32(u[24], u[25]);
s[13] = _mm_packs_epi32(u[26], u[27]);
s[14] = _mm_packs_epi32(u[28], u[29]);
s[15] = _mm_packs_epi32(u[30], u[31]);
// stage 2
u[0] = _mm_unpacklo_epi16(s[8], s[9]);
u[1] = _mm_unpackhi_epi16(s[8], s[9]);
u[2] = _mm_unpacklo_epi16(s[10], s[11]);
u[3] = _mm_unpackhi_epi16(s[10], s[11]);
u[4] = _mm_unpacklo_epi16(s[12], s[13]);
u[5] = _mm_unpackhi_epi16(s[12], s[13]);
u[6] = _mm_unpacklo_epi16(s[14], s[15]);
u[7] = _mm_unpackhi_epi16(s[14], s[15]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p04_p28);
v[1] = _mm_madd_epi16(u[1], k__cospi_p04_p28);
v[2] = _mm_madd_epi16(u[0], k__cospi_p28_m04);
v[3] = _mm_madd_epi16(u[1], k__cospi_p28_m04);
v[4] = _mm_madd_epi16(u[2], k__cospi_p20_p12);
v[5] = _mm_madd_epi16(u[3], k__cospi_p20_p12);
v[6] = _mm_madd_epi16(u[2], k__cospi_p12_m20);
v[7] = _mm_madd_epi16(u[3], k__cospi_p12_m20);
v[8] = _mm_madd_epi16(u[4], k__cospi_m28_p04);
v[9] = _mm_madd_epi16(u[5], k__cospi_m28_p04);
v[10] = _mm_madd_epi16(u[4], k__cospi_p04_p28);
v[11] = _mm_madd_epi16(u[5], k__cospi_p04_p28);
v[12] = _mm_madd_epi16(u[6], k__cospi_m12_p20);
v[13] = _mm_madd_epi16(u[7], k__cospi_m12_p20);
v[14] = _mm_madd_epi16(u[6], k__cospi_p20_p12);
v[15] = _mm_madd_epi16(u[7], k__cospi_p20_p12);
u[0] = _mm_add_epi32(v[0], v[8]);
u[1] = _mm_add_epi32(v[1], v[9]);
u[2] = _mm_add_epi32(v[2], v[10]);
u[3] = _mm_add_epi32(v[3], v[11]);
u[4] = _mm_add_epi32(v[4], v[12]);
u[5] = _mm_add_epi32(v[5], v[13]);
u[6] = _mm_add_epi32(v[6], v[14]);
u[7] = _mm_add_epi32(v[7], v[15]);
u[8] = _mm_sub_epi32(v[0], v[8]);
u[9] = _mm_sub_epi32(v[1], v[9]);
u[10] = _mm_sub_epi32(v[2], v[10]);
u[11] = _mm_sub_epi32(v[3], v[11]);
u[12] = _mm_sub_epi32(v[4], v[12]);
u[13] = _mm_sub_epi32(v[5], v[13]);
u[14] = _mm_sub_epi32(v[6], v[14]);
u[15] = _mm_sub_epi32(v[7], v[15]);
u[0] = dct_const_round_shift_sse2(u[0]);
u[1] = dct_const_round_shift_sse2(u[1]);
u[2] = dct_const_round_shift_sse2(u[2]);
u[3] = dct_const_round_shift_sse2(u[3]);
u[4] = dct_const_round_shift_sse2(u[4]);
u[5] = dct_const_round_shift_sse2(u[5]);
u[6] = dct_const_round_shift_sse2(u[6]);
u[7] = dct_const_round_shift_sse2(u[7]);
u[8] = dct_const_round_shift_sse2(u[8]);
u[9] = dct_const_round_shift_sse2(u[9]);
u[10] = dct_const_round_shift_sse2(u[10]);
u[11] = dct_const_round_shift_sse2(u[11]);
u[12] = dct_const_round_shift_sse2(u[12]);
u[13] = dct_const_round_shift_sse2(u[13]);
u[14] = dct_const_round_shift_sse2(u[14]);
u[15] = dct_const_round_shift_sse2(u[15]);
x[0] = _mm_add_epi16(s[0], s[4]);
x[1] = _mm_add_epi16(s[1], s[5]);
x[2] = _mm_add_epi16(s[2], s[6]);
x[3] = _mm_add_epi16(s[3], s[7]);
x[4] = _mm_sub_epi16(s[0], s[4]);
x[5] = _mm_sub_epi16(s[1], s[5]);
x[6] = _mm_sub_epi16(s[2], s[6]);
x[7] = _mm_sub_epi16(s[3], s[7]);
x[8] = _mm_packs_epi32(u[0], u[1]);
x[9] = _mm_packs_epi32(u[2], u[3]);
x[10] = _mm_packs_epi32(u[4], u[5]);
x[11] = _mm_packs_epi32(u[6], u[7]);
x[12] = _mm_packs_epi32(u[8], u[9]);
x[13] = _mm_packs_epi32(u[10], u[11]);
x[14] = _mm_packs_epi32(u[12], u[13]);
x[15] = _mm_packs_epi32(u[14], u[15]);
// stage 3
u[0] = _mm_unpacklo_epi16(x[4], x[5]);
u[1] = _mm_unpackhi_epi16(x[4], x[5]);
u[2] = _mm_unpacklo_epi16(x[6], x[7]);
u[3] = _mm_unpackhi_epi16(x[6], x[7]);
u[4] = _mm_unpacklo_epi16(x[12], x[13]);
u[5] = _mm_unpackhi_epi16(x[12], x[13]);
u[6] = _mm_unpacklo_epi16(x[14], x[15]);
u[7] = _mm_unpackhi_epi16(x[14], x[15]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p08_p24);
v[1] = _mm_madd_epi16(u[1], k__cospi_p08_p24);
v[2] = _mm_madd_epi16(u[0], k__cospi_p24_m08);
v[3] = _mm_madd_epi16(u[1], k__cospi_p24_m08);
v[4] = _mm_madd_epi16(u[2], k__cospi_m24_p08);
v[5] = _mm_madd_epi16(u[3], k__cospi_m24_p08);
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_p08_p24);
v[9] = _mm_madd_epi16(u[5], k__cospi_p08_p24);
v[10] = _mm_madd_epi16(u[4], k__cospi_p24_m08);
v[11] = _mm_madd_epi16(u[5], k__cospi_p24_m08);
v[12] = _mm_madd_epi16(u[6], k__cospi_m24_p08);
v[13] = _mm_madd_epi16(u[7], k__cospi_m24_p08);
v[14] = _mm_madd_epi16(u[6], k__cospi_p08_p24);
v[15] = _mm_madd_epi16(u[7], k__cospi_p08_p24);
u[0] = _mm_add_epi32(v[0], v[4]);
u[1] = _mm_add_epi32(v[1], v[5]);
u[2] = _mm_add_epi32(v[2], v[6]);
u[3] = _mm_add_epi32(v[3], v[7]);
u[4] = _mm_sub_epi32(v[0], v[4]);
u[5] = _mm_sub_epi32(v[1], v[5]);
u[6] = _mm_sub_epi32(v[2], v[6]);
u[7] = _mm_sub_epi32(v[3], v[7]);
u[8] = _mm_add_epi32(v[8], v[12]);
u[9] = _mm_add_epi32(v[9], v[13]);
u[10] = _mm_add_epi32(v[10], v[14]);
u[11] = _mm_add_epi32(v[11], v[15]);
u[12] = _mm_sub_epi32(v[8], v[12]);
u[13] = _mm_sub_epi32(v[9], v[13]);
u[14] = _mm_sub_epi32(v[10], v[14]);
u[15] = _mm_sub_epi32(v[11], v[15]);
v[0] = dct_const_round_shift_sse2(u[0]);
v[1] = dct_const_round_shift_sse2(u[1]);
v[2] = dct_const_round_shift_sse2(u[2]);
v[3] = dct_const_round_shift_sse2(u[3]);
v[4] = dct_const_round_shift_sse2(u[4]);
v[5] = dct_const_round_shift_sse2(u[5]);
v[6] = dct_const_round_shift_sse2(u[6]);
v[7] = dct_const_round_shift_sse2(u[7]);
v[8] = dct_const_round_shift_sse2(u[8]);
v[9] = dct_const_round_shift_sse2(u[9]);
v[10] = dct_const_round_shift_sse2(u[10]);
v[11] = dct_const_round_shift_sse2(u[11]);
v[12] = dct_const_round_shift_sse2(u[12]);
v[13] = dct_const_round_shift_sse2(u[13]);
v[14] = dct_const_round_shift_sse2(u[14]);
v[15] = dct_const_round_shift_sse2(u[15]);
s[0] = _mm_add_epi16(x[0], x[2]);
s[1] = _mm_add_epi16(x[1], x[3]);
s[2] = _mm_sub_epi16(x[0], x[2]);
s[3] = _mm_sub_epi16(x[1], x[3]);
s[4] = _mm_packs_epi32(v[0], v[1]);
s[5] = _mm_packs_epi32(v[2], v[3]);
s[6] = _mm_packs_epi32(v[4], v[5]);
s[7] = _mm_packs_epi32(v[6], v[7]);
s[8] = _mm_add_epi16(x[8], x[10]);
s[9] = _mm_add_epi16(x[9], x[11]);
s[10] = _mm_sub_epi16(x[8], x[10]);
s[11] = _mm_sub_epi16(x[9], x[11]);
s[12] = _mm_packs_epi32(v[8], v[9]);
s[13] = _mm_packs_epi32(v[10], v[11]);
s[14] = _mm_packs_epi32(v[12], v[13]);
s[15] = _mm_packs_epi32(v[14], v[15]);
// stage 4
u[0] = _mm_unpacklo_epi16(s[2], s[3]);
u[1] = _mm_unpackhi_epi16(s[2], s[3]);
u[2] = _mm_unpacklo_epi16(s[6], s[7]);
u[3] = _mm_unpackhi_epi16(s[6], s[7]);
u[4] = _mm_unpacklo_epi16(s[10], s[11]);
u[5] = _mm_unpackhi_epi16(s[10], s[11]);
u[6] = _mm_unpacklo_epi16(s[14], s[15]);
u[7] = _mm_unpackhi_epi16(s[14], s[15]);
in[7] = idct_calc_wraplow_sse2(u[0], u[1], k__cospi_m16_m16);
in[8] = idct_calc_wraplow_sse2(u[0], u[1], k__cospi_p16_m16);
in[4] = idct_calc_wraplow_sse2(u[2], u[3], k__cospi_p16_p16);
in[11] = idct_calc_wraplow_sse2(u[2], u[3], k__cospi_m16_p16);
in[6] = idct_calc_wraplow_sse2(u[4], u[5], k__cospi_p16_p16);
in[9] = idct_calc_wraplow_sse2(u[4], u[5], k__cospi_m16_p16);
in[5] = idct_calc_wraplow_sse2(u[6], u[7], k__cospi_m16_m16);
in[10] = idct_calc_wraplow_sse2(u[6], u[7], k__cospi_p16_m16);
in[0] = s[0];
in[1] = _mm_sub_epi16(kZero, s[8]);
in[2] = s[12];
in[3] = _mm_sub_epi16(kZero, s[4]);
in[12] = s[5];
in[13] = _mm_sub_epi16(kZero, s[13]);
in[14] = s[9];
in[15] = _mm_sub_epi16(kZero, s[1]);
}
void idct16_sse2(__m128i *const in0, __m128i *const in1) {
transpose_16bit_16x16(in0, in1);
idct16_8col(in0, in0);
idct16_8col(in1, in1);
}
void iadst16_sse2(__m128i *const in0, __m128i *const in1) {
transpose_16bit_16x16(in0, in1);
vpx_iadst16_8col_sse2(in0);
vpx_iadst16_8col_sse2(in1);
}
// Group the coefficient calculation into smaller functions to prevent stack
// spillover in 32x32 idct optimizations:
// quarter_1: 0-7
// quarter_2: 8-15
// quarter_3_4: 16-23, 24-31
// For each 8x32 block __m128i in[32],
// Input with index, 0, 4
// output pixels: 0-7 in __m128i out[32]
static INLINE void idct32_34_8x32_quarter_1(const __m128i *const in /*in[32]*/,
__m128i *const out /*out[8]*/) {
const __m128i zero = _mm_setzero_si128();
__m128i step1[8], step2[8];
// stage 3
butterfly(in[4], zero, cospi_28_64, cospi_4_64, &step1[4], &step1[7]);
// stage 4
step2[0] = butterfly_cospi16(in[0]);
step2[4] = step1[4];
step2[5] = step1[4];
step2[6] = step1[7];
step2[7] = step1[7];
// stage 5
step1[0] = step2[0];
step1[1] = step2[0];
step1[2] = step2[0];
step1[3] = step2[0];
step1[4] = step2[4];
butterfly(step2[6], step2[5], cospi_16_64, cospi_16_64, &step1[5], &step1[6]);
step1[7] = step2[7];
// stage 6
out[0] = _mm_add_epi16(step1[0], step1[7]);
out[1] = _mm_add_epi16(step1[1], step1[6]);
out[2] = _mm_add_epi16(step1[2], step1[5]);
out[3] = _mm_add_epi16(step1[3], step1[4]);
out[4] = _mm_sub_epi16(step1[3], step1[4]);
out[5] = _mm_sub_epi16(step1[2], step1[5]);
out[6] = _mm_sub_epi16(step1[1], step1[6]);
out[7] = _mm_sub_epi16(step1[0], step1[7]);
}
// For each 8x32 block __m128i in[32],
// Input with index, 2, 6
// output pixels: 8-15 in __m128i out[32]
static INLINE void idct32_34_8x32_quarter_2(const __m128i *const in /*in[32]*/,
__m128i *const out /*out[16]*/) {
const __m128i zero = _mm_setzero_si128();
__m128i step1[16], step2[16];
// stage 2
butterfly(in[2], zero, cospi_30_64, cospi_2_64, &step2[8], &step2[15]);
butterfly(zero, in[6], cospi_6_64, cospi_26_64, &step2[11], &step2[12]);
// stage 3
step1[8] = step2[8];
step1[9] = step2[8];
step1[14] = step2[15];
step1[15] = step2[15];
step1[10] = step2[11];
step1[11] = step2[11];
step1[12] = step2[12];
step1[13] = step2[12];
idct32_8x32_quarter_2_stage_4_to_6(step1, out);
}
static INLINE void idct32_34_8x32_quarter_1_2(
const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) {
__m128i temp[16];
idct32_34_8x32_quarter_1(in, temp);
idct32_34_8x32_quarter_2(in, temp);
// stage 7
add_sub_butterfly(temp, out, 16);
}
// For each 8x32 block __m128i in[32],
// Input with odd index, 1, 3, 5, 7
// output pixels: 16-23, 24-31 in __m128i out[32]
static INLINE void idct32_34_8x32_quarter_3_4(
const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) {
const __m128i zero = _mm_setzero_si128();
__m128i step1[32];
// stage 1
butterfly(in[1], zero, cospi_31_64, cospi_1_64, &step1[16], &step1[31]);
butterfly(zero, in[7], cospi_7_64, cospi_25_64, &step1[19], &step1[28]);
butterfly(in[5], zero, cospi_27_64, cospi_5_64, &step1[20], &step1[27]);
butterfly(zero, in[3], cospi_3_64, cospi_29_64, &step1[23], &step1[24]);
// stage 3
butterfly(step1[31], step1[16], cospi_28_64, cospi_4_64, &step1[17],
&step1[30]);
butterfly(step1[28], step1[19], -cospi_4_64, cospi_28_64, &step1[18],
&step1[29]);
butterfly(step1[27], step1[20], cospi_12_64, cospi_20_64, &step1[21],
&step1[26]);
butterfly(step1[24], step1[23], -cospi_20_64, cospi_12_64, &step1[22],
&step1[25]);
idct32_8x32_quarter_3_4_stage_4_to_7(step1, out);
}
void idct32_34_8x32_sse2(const __m128i *const in /*in[32]*/,
__m128i *const out /*out[32]*/) {
__m128i temp[32];
idct32_34_8x32_quarter_1_2(in, temp);
idct32_34_8x32_quarter_3_4(in, temp);
// final stage
add_sub_butterfly(temp, out, 32);
}
// Only upper-left 8x8 has non-zero coeff
void vpx_idct32x32_34_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i io[32], col[32];
int i;
// Load input data. Only need to load the top left 8x8 block.
load_transpose_16bit_8x8(input, 32, io);
idct32_34_8x32_sse2(io, col);
for (i = 0; i < 32; i += 8) {
int j;
transpose_16bit_8x8(col + i, io);
idct32_34_8x32_sse2(io, io);
for (j = 0; j < 32; ++j) {
write_buffer_8x1(dest + j * stride, io[j]);
}
dest += 8;
}
}
// For each 8x32 block __m128i in[32],
// Input with index, 0, 4, 8, 12, 16, 20, 24, 28
// output pixels: 0-7 in __m128i out[32]
static INLINE void idct32_1024_8x32_quarter_1(
const __m128i *const in /*in[32]*/, __m128i *const out /*out[8]*/) {
__m128i step1[8], step2[8];
// stage 3
butterfly(in[4], in[28], cospi_28_64, cospi_4_64, &step1[4], &step1[7]);
butterfly(in[20], in[12], cospi_12_64, cospi_20_64, &step1[5], &step1[6]);
// stage 4
butterfly(in[0], in[16], cospi_16_64, cospi_16_64, &step2[1], &step2[0]);
butterfly(in[8], in[24], cospi_24_64, cospi_8_64, &step2[2], &step2[3]);
step2[4] = _mm_add_epi16(step1[4], step1[5]);
step2[5] = _mm_sub_epi16(step1[4], step1[5]);
step2[6] = _mm_sub_epi16(step1[7], step1[6]);
step2[7] = _mm_add_epi16(step1[7], step1[6]);
// stage 5
step1[0] = _mm_add_epi16(step2[0], step2[3]);
step1[1] = _mm_add_epi16(step2[1], step2[2]);
step1[2] = _mm_sub_epi16(step2[1], step2[2]);
step1[3] = _mm_sub_epi16(step2[0], step2[3]);
step1[4] = step2[4];
butterfly(step2[6], step2[5], cospi_16_64, cospi_16_64, &step1[5], &step1[6]);
step1[7] = step2[7];
// stage 6
out[0] = _mm_add_epi16(step1[0], step1[7]);
out[1] = _mm_add_epi16(step1[1], step1[6]);
out[2] = _mm_add_epi16(step1[2], step1[5]);
out[3] = _mm_add_epi16(step1[3], step1[4]);
out[4] = _mm_sub_epi16(step1[3], step1[4]);
out[5] = _mm_sub_epi16(step1[2], step1[5]);
out[6] = _mm_sub_epi16(step1[1], step1[6]);
out[7] = _mm_sub_epi16(step1[0], step1[7]);
}
// For each 8x32 block __m128i in[32],
// Input with index, 2, 6, 10, 14, 18, 22, 26, 30
// output pixels: 8-15 in __m128i out[32]
static INLINE void idct32_1024_8x32_quarter_2(
const __m128i *const in /*in[32]*/, __m128i *const out /*out[16]*/) {
__m128i step1[16], step2[16];
// stage 2
butterfly(in[2], in[30], cospi_30_64, cospi_2_64, &step2[8], &step2[15]);
butterfly(in[18], in[14], cospi_14_64, cospi_18_64, &step2[9], &step2[14]);
butterfly(in[10], in[22], cospi_22_64, cospi_10_64, &step2[10], &step2[13]);
butterfly(in[26], in[6], cospi_6_64, cospi_26_64, &step2[11], &step2[12]);
// stage 3
step1[8] = _mm_add_epi16(step2[8], step2[9]);
step1[9] = _mm_sub_epi16(step2[8], step2[9]);
step1[10] = _mm_sub_epi16(step2[11], step2[10]);
step1[11] = _mm_add_epi16(step2[11], step2[10]);
step1[12] = _mm_add_epi16(step2[12], step2[13]);
step1[13] = _mm_sub_epi16(step2[12], step2[13]);
step1[14] = _mm_sub_epi16(step2[15], step2[14]);
step1[15] = _mm_add_epi16(step2[15], step2[14]);
idct32_8x32_quarter_2_stage_4_to_6(step1, out);
}
static INLINE void idct32_1024_8x32_quarter_1_2(
const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) {
__m128i temp[16];
idct32_1024_8x32_quarter_1(in, temp);
idct32_1024_8x32_quarter_2(in, temp);
// stage 7
add_sub_butterfly(temp, out, 16);
}
// For each 8x32 block __m128i in[32],
// Input with odd index,
// 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31
// output pixels: 16-23, 24-31 in __m128i out[32]
static INLINE void idct32_1024_8x32_quarter_3_4(
const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) {
__m128i step1[32], step2[32];
// stage 1
butterfly(in[1], in[31], cospi_31_64, cospi_1_64, &step1[16], &step1[31]);
butterfly(in[17], in[15], cospi_15_64, cospi_17_64, &step1[17], &step1[30]);
butterfly(in[9], in[23], cospi_23_64, cospi_9_64, &step1[18], &step1[29]);
butterfly(in[25], in[7], cospi_7_64, cospi_25_64, &step1[19], &step1[28]);
butterfly(in[5], in[27], cospi_27_64, cospi_5_64, &step1[20], &step1[27]);
butterfly(in[21], in[11], cospi_11_64, cospi_21_64, &step1[21], &step1[26]);
butterfly(in[13], in[19], cospi_19_64, cospi_13_64, &step1[22], &step1[25]);
butterfly(in[29], in[3], cospi_3_64, cospi_29_64, &step1[23], &step1[24]);
// stage 2
step2[16] = _mm_add_epi16(step1[16], step1[17]);
step2[17] = _mm_sub_epi16(step1[16], step1[17]);
step2[18] = _mm_sub_epi16(step1[19], step1[18]);
step2[19] = _mm_add_epi16(step1[19], step1[18]);
step2[20] = _mm_add_epi16(step1[20], step1[21]);
step2[21] = _mm_sub_epi16(step1[20], step1[21]);
step2[22] = _mm_sub_epi16(step1[23], step1[22]);
step2[23] = _mm_add_epi16(step1[23], step1[22]);
step2[24] = _mm_add_epi16(step1[24], step1[25]);
step2[25] = _mm_sub_epi16(step1[24], step1[25]);
step2[26] = _mm_sub_epi16(step1[27], step1[26]);
step2[27] = _mm_add_epi16(step1[27], step1[26]);
step2[28] = _mm_add_epi16(step1[28], step1[29]);
step2[29] = _mm_sub_epi16(step1[28], step1[29]);
step2[30] = _mm_sub_epi16(step1[31], step1[30]);
step2[31] = _mm_add_epi16(step1[31], step1[30]);
// stage 3
step1[16] = step2[16];
step1[31] = step2[31];
butterfly(step2[30], step2[17], cospi_28_64, cospi_4_64, &step1[17],
&step1[30]);
butterfly(step2[29], step2[18], -cospi_4_64, cospi_28_64, &step1[18],
&step1[29]);
step1[19] = step2[19];
step1[20] = step2[20];
butterfly(step2[26], step2[21], cospi_12_64, cospi_20_64, &step1[21],
&step1[26]);
butterfly(step2[25], step2[22], -cospi_20_64, cospi_12_64, &step1[22],
&step1[25]);
step1[23] = step2[23];
step1[24] = step2[24];
step1[27] = step2[27];
step1[28] = step2[28];
idct32_8x32_quarter_3_4_stage_4_to_7(step1, out);
}
void idct32_1024_8x32(const __m128i *const in /*in[32]*/,
__m128i *const out /*out[32]*/) {
__m128i temp[32];
idct32_1024_8x32_quarter_1_2(in, temp);
idct32_1024_8x32_quarter_3_4(in, temp);
// final stage
add_sub_butterfly(temp, out, 32);
}
void vpx_idct32x32_1024_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i col[4][32], io[32];
int i;
// rows
for (i = 0; i < 4; i++) {
load_transpose_16bit_8x8(&input[0], 32, &io[0]);
load_transpose_16bit_8x8(&input[8], 32, &io[8]);
load_transpose_16bit_8x8(&input[16], 32, &io[16]);
load_transpose_16bit_8x8(&input[24], 32, &io[24]);
idct32_1024_8x32(io, col[i]);
input += 32 << 3;
}
// columns
for (i = 0; i < 32; i += 8) {
// Transpose 32x8 block to 8x32 block
transpose_16bit_8x8(col[0] + i, io);
transpose_16bit_8x8(col[1] + i, io + 8);
transpose_16bit_8x8(col[2] + i, io + 16);
transpose_16bit_8x8(col[3] + i, io + 24);
idct32_1024_8x32(io, io);
store_buffer_8x32(io, dest, stride);
dest += 8;
}
}
void vpx_idct32x32_135_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i col[2][32], in[32], out[32];
int i;
for (i = 16; i < 32; i++) {
in[i] = _mm_setzero_si128();
}
// rows
for (i = 0; i < 2; i++) {
load_transpose_16bit_8x8(&input[0], 32, &in[0]);
load_transpose_16bit_8x8(&input[8], 32, &in[8]);
idct32_1024_8x32(in, col[i]);
input += 32 << 3;
}
// columns
for (i = 0; i < 32; i += 8) {
transpose_16bit_8x8(col[0] + i, in);
transpose_16bit_8x8(col[1] + i, in + 8);
idct32_1024_8x32(in, out);
store_buffer_8x32(out, dest, stride);
dest += 8;
}
}
void vpx_idct32x32_1_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i dc_value;
int j;
tran_high_t a1;
tran_low_t out =
WRAPLOW(dct_const_round_shift((int16_t)input[0] * cospi_16_64));
out = WRAPLOW(dct_const_round_shift(out * cospi_16_64));
a1 = ROUND_POWER_OF_TWO(out, 6);
dc_value = _mm_set1_epi16((int16_t)a1);
for (j = 0; j < 32; ++j) {
recon_and_store_16(dest + j * stride + 0, dc_value);
recon_and_store_16(dest + j * stride + 16, dc_value);
}
}