ref: c0490b52b1aac20da01353cba954fce84cc8203f
dir: /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(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 *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 *in) {
const __m128i k__sinpi_p01_p04 = pair_set_epi16(sinpi_1_9, sinpi_4_9);
const __m128i k__sinpi_p03_p02 = pair_set_epi16(sinpi_3_9, sinpi_2_9);
const __m128i k__sinpi_p02_m01 = pair_set_epi16(sinpi_2_9, -sinpi_1_9);
const __m128i k__sinpi_p03_m04 = pair_set_epi16(sinpi_3_9, -sinpi_4_9);
const __m128i k__sinpi_p03_p03 = _mm_set1_epi16((int16_t)sinpi_3_9);
const __m128i kZero = _mm_set1_epi16(0);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
__m128i u[8], v[8], in7;
transpose_16bit_4(in);
in7 = _mm_srli_si128(in[1], 8);
in7 = _mm_add_epi16(in7, in[0]);
in7 = _mm_sub_epi16(in7, in[1]);
u[0] = _mm_unpacklo_epi16(in[0], in[1]);
u[1] = _mm_unpackhi_epi16(in[0], in[1]);
u[2] = _mm_unpacklo_epi16(in7, kZero);
u[3] = _mm_unpackhi_epi16(in[0], kZero);
v[0] = _mm_madd_epi16(u[0], k__sinpi_p01_p04); // s0 + s3
v[1] = _mm_madd_epi16(u[1], k__sinpi_p03_p02); // s2 + s5
v[2] = _mm_madd_epi16(u[2], k__sinpi_p03_p03); // x2
v[3] = _mm_madd_epi16(u[0], k__sinpi_p02_m01); // s1 - s4
v[4] = _mm_madd_epi16(u[1], k__sinpi_p03_m04); // s2 - s6
v[5] = _mm_madd_epi16(u[3], k__sinpi_p03_p03); // s2
u[0] = _mm_add_epi32(v[0], v[1]);
u[1] = _mm_add_epi32(v[3], v[4]);
u[2] = v[2];
u[3] = _mm_add_epi32(u[0], u[1]);
u[4] = _mm_slli_epi32(v[5], 2);
u[5] = _mm_add_epi32(u[3], v[5]);
u[6] = _mm_sub_epi32(u[5], u[4]);
v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
v[3] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
in[0] = _mm_packs_epi32(u[0], u[1]);
in[1] = _mm_packs_epi32(u[2], u[3]);
}
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++) {
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(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 idct8_sse2(__m128i *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 *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((int16_t)cospi_16_64);
const __m128i k__const_0 = _mm_set1_epi16(0);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
__m128i u0, u1, u2, u3, u4, u5, u6, u7, u8, u9, u10, u11, u12, u13, u14, u15;
__m128i v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15;
__m128i w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15;
__m128i s0, s1, s2, s3, s4, s5, s6, s7;
__m128i in0, in1, in2, in3, in4, in5, in6, in7;
// transpose
transpose_16bit_8x8(in, in);
// properly aligned for butterfly input
in0 = in[7];
in1 = in[0];
in2 = in[5];
in3 = in[2];
in4 = in[3];
in5 = in[4];
in6 = in[1];
in7 = in[6];
// column transformation
// stage 1
// interleave and multiply/add into 32-bit integer
s0 = _mm_unpacklo_epi16(in0, in1);
s1 = _mm_unpackhi_epi16(in0, in1);
s2 = _mm_unpacklo_epi16(in2, in3);
s3 = _mm_unpackhi_epi16(in2, in3);
s4 = _mm_unpacklo_epi16(in4, in5);
s5 = _mm_unpackhi_epi16(in4, in5);
s6 = _mm_unpacklo_epi16(in6, in7);
s7 = _mm_unpackhi_epi16(in6, in7);
u0 = _mm_madd_epi16(s0, k__cospi_p02_p30);
u1 = _mm_madd_epi16(s1, k__cospi_p02_p30);
u2 = _mm_madd_epi16(s0, k__cospi_p30_m02);
u3 = _mm_madd_epi16(s1, k__cospi_p30_m02);
u4 = _mm_madd_epi16(s2, k__cospi_p10_p22);
u5 = _mm_madd_epi16(s3, k__cospi_p10_p22);
u6 = _mm_madd_epi16(s2, k__cospi_p22_m10);
u7 = _mm_madd_epi16(s3, k__cospi_p22_m10);
u8 = _mm_madd_epi16(s4, k__cospi_p18_p14);
u9 = _mm_madd_epi16(s5, k__cospi_p18_p14);
u10 = _mm_madd_epi16(s4, k__cospi_p14_m18);
u11 = _mm_madd_epi16(s5, k__cospi_p14_m18);
u12 = _mm_madd_epi16(s6, k__cospi_p26_p06);
u13 = _mm_madd_epi16(s7, k__cospi_p26_p06);
u14 = _mm_madd_epi16(s6, k__cospi_p06_m26);
u15 = _mm_madd_epi16(s7, k__cospi_p06_m26);
// addition
w0 = _mm_add_epi32(u0, u8);
w1 = _mm_add_epi32(u1, u9);
w2 = _mm_add_epi32(u2, u10);
w3 = _mm_add_epi32(u3, u11);
w4 = _mm_add_epi32(u4, u12);
w5 = _mm_add_epi32(u5, u13);
w6 = _mm_add_epi32(u6, u14);
w7 = _mm_add_epi32(u7, u15);
w8 = _mm_sub_epi32(u0, u8);
w9 = _mm_sub_epi32(u1, u9);
w10 = _mm_sub_epi32(u2, u10);
w11 = _mm_sub_epi32(u3, u11);
w12 = _mm_sub_epi32(u4, u12);
w13 = _mm_sub_epi32(u5, u13);
w14 = _mm_sub_epi32(u6, u14);
w15 = _mm_sub_epi32(u7, u15);
// shift and rounding
v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING);
v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING);
v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING);
v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING);
v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING);
v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING);
v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING);
v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING);
v8 = _mm_add_epi32(w8, k__DCT_CONST_ROUNDING);
v9 = _mm_add_epi32(w9, k__DCT_CONST_ROUNDING);
v10 = _mm_add_epi32(w10, k__DCT_CONST_ROUNDING);
v11 = _mm_add_epi32(w11, k__DCT_CONST_ROUNDING);
v12 = _mm_add_epi32(w12, k__DCT_CONST_ROUNDING);
v13 = _mm_add_epi32(w13, k__DCT_CONST_ROUNDING);
v14 = _mm_add_epi32(w14, k__DCT_CONST_ROUNDING);
v15 = _mm_add_epi32(w15, k__DCT_CONST_ROUNDING);
u0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
u1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
u2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
u3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
u4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
u5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
u6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
u7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
u8 = _mm_srai_epi32(v8, DCT_CONST_BITS);
u9 = _mm_srai_epi32(v9, DCT_CONST_BITS);
u10 = _mm_srai_epi32(v10, DCT_CONST_BITS);
u11 = _mm_srai_epi32(v11, DCT_CONST_BITS);
u12 = _mm_srai_epi32(v12, DCT_CONST_BITS);
u13 = _mm_srai_epi32(v13, DCT_CONST_BITS);
u14 = _mm_srai_epi32(v14, DCT_CONST_BITS);
u15 = _mm_srai_epi32(v15, DCT_CONST_BITS);
// back to 16-bit and pack 8 integers into __m128i
in[0] = _mm_packs_epi32(u0, u1);
in[1] = _mm_packs_epi32(u2, u3);
in[2] = _mm_packs_epi32(u4, u5);
in[3] = _mm_packs_epi32(u6, u7);
in[4] = _mm_packs_epi32(u8, u9);
in[5] = _mm_packs_epi32(u10, u11);
in[6] = _mm_packs_epi32(u12, u13);
in[7] = _mm_packs_epi32(u14, u15);
// stage 2
s0 = _mm_add_epi16(in[0], in[2]);
s1 = _mm_add_epi16(in[1], in[3]);
s2 = _mm_sub_epi16(in[0], in[2]);
s3 = _mm_sub_epi16(in[1], in[3]);
u0 = _mm_unpacklo_epi16(in[4], in[5]);
u1 = _mm_unpackhi_epi16(in[4], in[5]);
u2 = _mm_unpacklo_epi16(in[6], in[7]);
u3 = _mm_unpackhi_epi16(in[6], in[7]);
v0 = _mm_madd_epi16(u0, k__cospi_p08_p24);
v1 = _mm_madd_epi16(u1, k__cospi_p08_p24);
v2 = _mm_madd_epi16(u0, k__cospi_p24_m08);
v3 = _mm_madd_epi16(u1, k__cospi_p24_m08);
v4 = _mm_madd_epi16(u2, k__cospi_m24_p08);
v5 = _mm_madd_epi16(u3, k__cospi_m24_p08);
v6 = _mm_madd_epi16(u2, k__cospi_p08_p24);
v7 = _mm_madd_epi16(u3, k__cospi_p08_p24);
w0 = _mm_add_epi32(v0, v4);
w1 = _mm_add_epi32(v1, v5);
w2 = _mm_add_epi32(v2, v6);
w3 = _mm_add_epi32(v3, v7);
w4 = _mm_sub_epi32(v0, v4);
w5 = _mm_sub_epi32(v1, v5);
w6 = _mm_sub_epi32(v2, v6);
w7 = _mm_sub_epi32(v3, v7);
v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING);
v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING);
v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING);
v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING);
v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING);
v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING);
v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING);
v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING);
u0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
u1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
u2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
u3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
u4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
u5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
u6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
u7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
// back to 16-bit intergers
s4 = _mm_packs_epi32(u0, u1);
s5 = _mm_packs_epi32(u2, u3);
s6 = _mm_packs_epi32(u4, u5);
s7 = _mm_packs_epi32(u6, u7);
// stage 3
u0 = _mm_unpacklo_epi16(s2, s3);
u1 = _mm_unpackhi_epi16(s2, s3);
u2 = _mm_unpacklo_epi16(s6, s7);
u3 = _mm_unpackhi_epi16(s6, s7);
s2 = idct_calc_wraplow_sse2(u0, u1, k__cospi_p16_p16);
s3 = idct_calc_wraplow_sse2(u0, u1, k__cospi_p16_m16);
s6 = idct_calc_wraplow_sse2(u2, u3, k__cospi_p16_p16);
s7 = idct_calc_wraplow_sse2(u2, u3, k__cospi_p16_m16);
in[0] = s0;
in[1] = _mm_sub_epi16(k__const_0, s4);
in[2] = s6;
in[3] = _mm_sub_epi16(k__const_0, s2);
in[4] = s3;
in[5] = _mm_sub_epi16(k__const_0, s7);
in[6] = s5;
in[7] = _mm_sub_epi16(k__const_0, s1);
}
static INLINE void idct16_8col(__m128i *const io /*io[16]*/) {
const __m128i k__cospi_p16_p16 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
__m128i step1[16], step2[16];
// stage 2
{
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);
multiplication_and_add(&io[1], &io[15], &io[9], &io[7], &k__cospi_p30_m02,
&k__cospi_p02_p30, &k__cospi_p14_m18,
&k__cospi_p18_p14, &step2[8], &step2[15], &step2[9],
&step2[14]);
}
{
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);
multiplication_and_add(&io[5], &io[11], &io[13], &io[3], &k__cospi_p22_m10,
&k__cospi_p10_p22, &k__cospi_p06_m26,
&k__cospi_p26_p06, &step2[10], &step2[13],
&step2[11], &step2[12]);
}
// stage 3
{
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);
multiplication_and_add(&io[2], &io[14], &io[10], &io[6], &k__cospi_p28_m04,
&k__cospi_p04_p28, &k__cospi_p12_m20,
&k__cospi_p20_p12, &step1[4], &step1[7], &step1[5],
&step1[6]);
}
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[10], step2[11]);
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[14], step2[15]);
// stage 4
{
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);
multiplication_and_add(&io[8], &io[0], &io[12], &io[4], &k__cospi_p16_p16,
&k__cospi_m16_p16, &k__cospi_m08_p24,
&k__cospi_p24_p08, &step2[0], &step2[1], &step2[2],
&step2[3]);
step2[5] = _mm_sub_epi16(step1[4], step1[5]);
step1[4] = _mm_add_epi16(step1[4], step1[5]);
step2[6] = _mm_sub_epi16(step1[7], step1[6]);
step1[7] = _mm_add_epi16(step1[6], step1[7]);
step2[8] = step1[8];
multiplication_and_add(&step1[9], &step1[14], &step1[10], &step1[13],
&k__cospi_m08_p24, &k__cospi_p24_p08,
&k__cospi_m24_m08, &k__cospi_m08_p24, &step2[9],
&step2[14], &step2[10], &step2[13]);
}
step2[11] = step1[11];
step2[12] = step1[12];
step2[15] = step1[15];
// 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]);
multiplication_and_add_2(&step2[5], &step2[6], &k__cospi_m16_p16,
&k__cospi_p16_p16, &step1[5], &step1[6]);
step1[8] = _mm_add_epi16(step2[8], step2[11]);
step1[9] = _mm_add_epi16(step2[9], step2[10]);
step1[10] = _mm_sub_epi16(step2[9], step2[10]);
step1[11] = _mm_sub_epi16(step2[8], step2[11]);
step1[12] = _mm_sub_epi16(step2[15], step2[12]);
step1[13] = _mm_sub_epi16(step2[14], step2[13]);
step1[14] = _mm_add_epi16(step2[14], step2[13]);
step1[15] = _mm_add_epi16(step2[15], step2[12]);
// stage 6
step2[0] = _mm_add_epi16(step1[0], step1[7]);
step2[1] = _mm_add_epi16(step1[1], step1[6]);
step2[2] = _mm_add_epi16(step1[2], step1[5]);
step2[3] = _mm_add_epi16(step1[3], step1[4]);
step2[4] = _mm_sub_epi16(step1[3], step1[4]);
step2[5] = _mm_sub_epi16(step1[2], step1[5]);
step2[6] = _mm_sub_epi16(step1[1], step1[6]);
step2[7] = _mm_sub_epi16(step1[0], step1[7]);
multiplication_and_add(&step1[10], &step1[13], &step1[11], &step1[12],
&k__cospi_m16_p16, &k__cospi_p16_p16,
&k__cospi_m16_p16, &k__cospi_p16_p16, &step2[10],
&step2[13], &step2[11], &step2[12]);
// stage 7
io[0] = _mm_add_epi16(step2[0], step1[15]);
io[1] = _mm_add_epi16(step2[1], step1[14]);
io[2] = _mm_add_epi16(step2[2], step2[13]);
io[3] = _mm_add_epi16(step2[3], step2[12]);
io[4] = _mm_add_epi16(step2[4], step2[11]);
io[5] = _mm_add_epi16(step2[5], step2[10]);
io[6] = _mm_add_epi16(step2[6], step1[9]);
io[7] = _mm_add_epi16(step2[7], step1[8]);
io[8] = _mm_sub_epi16(step2[7], step1[8]);
io[9] = _mm_sub_epi16(step2[6], step1[9]);
io[10] = _mm_sub_epi16(step2[5], step2[10]);
io[11] = _mm_sub_epi16(step2[4], step2[11]);
io[12] = _mm_sub_epi16(step2[3], step2[12]);
io[13] = _mm_sub_epi16(step2[2], step2[13]);
io[14] = _mm_sub_epi16(step2[1], step1[14]);
io[15] = _mm_sub_epi16(step2[0], step1[15]);
}
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);
}
static INLINE void write_buffer_8x1(uint8_t *const dest, const __m128i in) {
const __m128i final_rounding = _mm_set1_epi16(1 << 5);
__m128i out;
out = _mm_adds_epi16(in, final_rounding);
out = _mm_srai_epi16(out, 6);
recon_and_store(dest, out);
}
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 = r;
input += 128;
}
for (i = 0; i < 2; i++) {
int j;
transpose_16bit_8x8(l + i * 8, out);
transpose_16bit_8x8(r + i * 8, out + 8);
idct16_8col(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], out[16];
int i;
idct16_load8x8(input, in);
transpose_16bit_8x8(in, in);
in[8] = _mm_setzero_si128();
in[9] = _mm_setzero_si128();
in[10] = _mm_setzero_si128();
in[11] = _mm_setzero_si128();
in[12] = _mm_setzero_si128();
in[13] = _mm_setzero_si128();
in[14] = _mm_setzero_si128();
in[15] = _mm_setzero_si128();
idct16_8col(in);
for (i = 0; i < 2; i++) {
int j;
transpose_16bit_8x8(in + i * 8, out);
out[8] = _mm_setzero_si128();
out[9] = _mm_setzero_si128();
out[10] = _mm_setzero_si128();
out[11] = _mm_setzero_si128();
out[12] = _mm_setzero_si128();
out[13] = _mm_setzero_si128();
out[14] = _mm_setzero_si128();
out[15] = _mm_setzero_si128();
idct16_8col(out);
for (j = 0; j < 16; ++j) {
write_buffer_8x1(dest + j * stride, out[j]);
}
dest += 8;
}
}
static INLINE void idct16x16_10_pass1(const __m128i *const input /*input[4]*/,
__m128i *const output /*output[16]*/) {
const __m128i zero = _mm_setzero_si128();
const __m128i k__cospi_p16_p16 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
__m128i step1[16], step2[16];
transpose_16bit_4x4(input, output);
// stage 2
{
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_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 lo_1_15 = _mm_unpackhi_epi16(output[0], zero);
const __m128i lo_13_3 = _mm_unpackhi_epi16(zero, output[1]);
step2[8] = idct_calc_wraplow_sse2(k__cospi_p30_m02, k__cospi_p02_p30,
lo_1_15); // step2 8&15
step2[11] = idct_calc_wraplow_sse2(k__cospi_p06_m26, k__cospi_p26_p06,
lo_13_3); // step2 11&12
}
// stage 3
{
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 lo_2_14 = _mm_unpacklo_epi16(output[1], zero);
step1[4] = idct_calc_wraplow_sse2(k__cospi_p28_m04, k__cospi_p04_p28,
lo_2_14); // step1 4&7
step1[13] = _mm_unpackhi_epi64(step2[11], zero);
step1[14] = _mm_unpackhi_epi64(step2[8], zero);
}
// stage 4
{
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 lo_0_8 = _mm_unpacklo_epi16(output[0], zero);
const __m128i lo_9_14 = _mm_unpacklo_epi16(step2[8], step1[14]);
const __m128i lo_10_13 = _mm_unpacklo_epi16(step2[11], step1[13]);
const __m128i t = idct_madd_round_shift_sse2(lo_0_8, k__cospi_p16_p16);
step1[0] = _mm_packs_epi32(t, t); // step2 0&1
step2[9] = idct_calc_wraplow_sse2(k__cospi_m08_p24, k__cospi_p24_p08,
lo_9_14); // step2 9&14
step2[10] = idct_calc_wraplow_sse2(k__cospi_m24_m08, k__cospi_m08_p24,
lo_10_13); // step2 10&13
step2[6] = _mm_unpackhi_epi64(step1[4], zero);
}
// stage 5
{
const __m128i lo_5_6 = _mm_unpacklo_epi16(step1[4], step2[6]);
step1[6] = idct_calc_wraplow_sse2(k__cospi_p16_p16, k__cospi_m16_p16,
lo_5_6); // step1 6&5
step1[8] = _mm_add_epi16(step2[8], step2[11]);
step1[9] = _mm_add_epi16(step2[9], step2[10]);
step1[10] = _mm_sub_epi16(step2[9], step2[10]);
step1[11] = _mm_sub_epi16(step2[8], step2[11]);
step1[12] = _mm_unpackhi_epi64(step1[11], zero);
step1[13] = _mm_unpackhi_epi64(step1[10], zero);
step1[14] = _mm_unpackhi_epi64(step1[9], zero);
step1[15] = _mm_unpackhi_epi64(step1[8], zero);
}
// stage 6
{
const __m128i lo_10_13 = _mm_unpacklo_epi16(step1[10], step1[13]);
const __m128i lo_11_12 = _mm_unpacklo_epi16(step1[11], step1[12]);
step2[10] = idct_calc_wraplow_sse2(k__cospi_m16_p16, k__cospi_p16_p16,
lo_10_13); // step2 10&13
step2[11] = idct_calc_wraplow_sse2(k__cospi_m16_p16, k__cospi_p16_p16,
lo_11_12); // step2 11&12
step2[13] = _mm_unpackhi_epi64(step2[10], zero);
step2[12] = _mm_unpackhi_epi64(step2[11], zero);
step2[3] = _mm_add_epi16(step1[0], step1[4]);
step2[1] = _mm_add_epi16(step1[0], step1[6]);
step2[6] = _mm_sub_epi16(step1[0], step1[6]);
step2[4] = _mm_sub_epi16(step1[0], step1[4]);
step2[0] = _mm_unpackhi_epi64(step2[3], zero);
step2[2] = _mm_unpackhi_epi64(step2[1], zero);
step2[5] = _mm_unpackhi_epi64(step2[6], zero);
step2[7] = _mm_unpackhi_epi64(step2[4], zero);
}
// stage 7. Left 8x16 only.
output[0] = _mm_add_epi16(step2[0], step1[15]);
output[1] = _mm_add_epi16(step2[1], step1[14]);
output[2] = _mm_add_epi16(step2[2], step2[13]);
output[3] = _mm_add_epi16(step2[3], step2[12]);
output[4] = _mm_add_epi16(step2[4], step2[11]);
output[5] = _mm_add_epi16(step2[5], step2[10]);
output[6] = _mm_add_epi16(step2[6], step1[9]);
output[7] = _mm_add_epi16(step2[7], step1[8]);
output[8] = _mm_sub_epi16(step2[7], step1[8]);
output[9] = _mm_sub_epi16(step2[6], step1[9]);
output[10] = _mm_sub_epi16(step2[5], step2[10]);
output[11] = _mm_sub_epi16(step2[4], step2[11]);
output[12] = _mm_sub_epi16(step2[3], step2[12]);
output[13] = _mm_sub_epi16(step2[2], step2[13]);
output[14] = _mm_sub_epi16(step2[1], step1[14]);
output[15] = _mm_sub_epi16(step2[0], step1[15]);
}
static INLINE void idct16x16_10_pass2(__m128i *const l /*l[8]*/,
__m128i *const io /*io[16]*/) {
const __m128i zero = _mm_setzero_si128();
const __m128i k__cospi_p16_p16 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
__m128i step1[16], step2[16];
transpose_16bit_4x8(l, io);
// stage 2
{
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_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);
multiplication_and_add(&io[1], &zero, &zero, &io[3], &k__cospi_p30_m02,
&k__cospi_p02_p30, &k__cospi_p06_m26,
&k__cospi_p26_p06, &step2[8], &step2[15], &step2[11],
&step2[12]);
}
// stage 3
{
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);
multiplication_and_add_2(&io[2], &zero, &k__cospi_p28_m04,
&k__cospi_p04_p28, &step1[4], &step1[7]);
}
// stage 4
{
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);
multiplication_and_add_2(&zero, &io[0], &k__cospi_p16_p16,
&k__cospi_m16_p16, &step1[0], &step1[1]);
multiplication_and_add(&step2[8], &step2[15], &step2[11], &step2[12],
&k__cospi_m08_p24, &k__cospi_p24_p08,
&k__cospi_m24_m08, &k__cospi_m08_p24, &step2[9],
&step2[14], &step2[10], &step2[13]);
}
// stage 5
multiplication_and_add_2(&step1[4], &step1[7], &k__cospi_m16_p16,
&k__cospi_p16_p16, &step1[5], &step1[6]);
step1[8] = _mm_add_epi16(step2[8], step2[11]);
step1[9] = _mm_add_epi16(step2[9], step2[10]);
step1[10] = _mm_sub_epi16(step2[9], step2[10]);
step1[11] = _mm_sub_epi16(step2[8], step2[11]);
step1[12] = _mm_sub_epi16(step2[15], step2[12]);
step1[13] = _mm_sub_epi16(step2[14], step2[13]);
step1[14] = _mm_add_epi16(step2[14], step2[13]);
step1[15] = _mm_add_epi16(step2[15], step2[12]);
// stage 6
step2[0] = _mm_add_epi16(step1[0], step1[7]);
step2[1] = _mm_add_epi16(step1[1], step1[6]);
step2[2] = _mm_add_epi16(step1[1], step1[5]);
step2[3] = _mm_add_epi16(step1[0], step1[4]);
step2[4] = _mm_sub_epi16(step1[0], step1[4]);
step2[5] = _mm_sub_epi16(step1[1], step1[5]);
step2[6] = _mm_sub_epi16(step1[1], step1[6]);
step2[7] = _mm_sub_epi16(step1[0], step1[7]);
multiplication_and_add(&step1[10], &step1[13], &step1[11], &step1[12],
&k__cospi_m16_p16, &k__cospi_p16_p16,
&k__cospi_m16_p16, &k__cospi_p16_p16, &step2[10],
&step2[13], &step2[11], &step2[12]);
// stage 7
io[0] = _mm_add_epi16(step2[0], step1[15]);
io[1] = _mm_add_epi16(step2[1], step1[14]);
io[2] = _mm_add_epi16(step2[2], step2[13]);
io[3] = _mm_add_epi16(step2[3], step2[12]);
io[4] = _mm_add_epi16(step2[4], step2[11]);
io[5] = _mm_add_epi16(step2[5], step2[10]);
io[6] = _mm_add_epi16(step2[6], step1[9]);
io[7] = _mm_add_epi16(step2[7], step1[8]);
io[8] = _mm_sub_epi16(step2[7], step1[8]);
io[9] = _mm_sub_epi16(step2[6], step1[9]);
io[10] = _mm_sub_epi16(step2[5], step2[10]);
io[11] = _mm_sub_epi16(step2[4], step2[11]);
io[12] = _mm_sub_epi16(step2[3], step2[12]);
io[13] = _mm_sub_epi16(step2[2], step2[13]);
io[14] = _mm_sub_epi16(step2[1], step1[14]);
io[15] = _mm_sub_epi16(step2[0], step1[15]);
}
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 < 2; i++) {
int j;
idct16x16_10_pass2(l + 8 * 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(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;
}
}
static void iadst16_8col(__m128i *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((int16_t)-cospi_16_64);
const __m128i k__cospi_p16_p16 = _mm_set1_epi16((int16_t)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 k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
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]);
v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING);
v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING);
v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING);
v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING);
v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING);
v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING);
v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING);
v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING);
v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING);
v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING);
v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING);
v[16] = _mm_add_epi32(u[16], k__DCT_CONST_ROUNDING);
v[17] = _mm_add_epi32(u[17], k__DCT_CONST_ROUNDING);
v[18] = _mm_add_epi32(u[18], k__DCT_CONST_ROUNDING);
v[19] = _mm_add_epi32(u[19], k__DCT_CONST_ROUNDING);
v[20] = _mm_add_epi32(u[20], k__DCT_CONST_ROUNDING);
v[21] = _mm_add_epi32(u[21], k__DCT_CONST_ROUNDING);
v[22] = _mm_add_epi32(u[22], k__DCT_CONST_ROUNDING);
v[23] = _mm_add_epi32(u[23], k__DCT_CONST_ROUNDING);
v[24] = _mm_add_epi32(u[24], k__DCT_CONST_ROUNDING);
v[25] = _mm_add_epi32(u[25], k__DCT_CONST_ROUNDING);
v[26] = _mm_add_epi32(u[26], k__DCT_CONST_ROUNDING);
v[27] = _mm_add_epi32(u[27], k__DCT_CONST_ROUNDING);
v[28] = _mm_add_epi32(u[28], k__DCT_CONST_ROUNDING);
v[29] = _mm_add_epi32(u[29], k__DCT_CONST_ROUNDING);
v[30] = _mm_add_epi32(u[30], k__DCT_CONST_ROUNDING);
v[31] = _mm_add_epi32(u[31], k__DCT_CONST_ROUNDING);
u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS);
u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS);
u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS);
u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS);
u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS);
u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS);
u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS);
u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS);
u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS);
u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS);
u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS);
u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS);
u[16] = _mm_srai_epi32(v[16], DCT_CONST_BITS);
u[17] = _mm_srai_epi32(v[17], DCT_CONST_BITS);
u[18] = _mm_srai_epi32(v[18], DCT_CONST_BITS);
u[19] = _mm_srai_epi32(v[19], DCT_CONST_BITS);
u[20] = _mm_srai_epi32(v[20], DCT_CONST_BITS);
u[21] = _mm_srai_epi32(v[21], DCT_CONST_BITS);
u[22] = _mm_srai_epi32(v[22], DCT_CONST_BITS);
u[23] = _mm_srai_epi32(v[23], DCT_CONST_BITS);
u[24] = _mm_srai_epi32(v[24], DCT_CONST_BITS);
u[25] = _mm_srai_epi32(v[25], DCT_CONST_BITS);
u[26] = _mm_srai_epi32(v[26], DCT_CONST_BITS);
u[27] = _mm_srai_epi32(v[27], DCT_CONST_BITS);
u[28] = _mm_srai_epi32(v[28], DCT_CONST_BITS);
u[29] = _mm_srai_epi32(v[29], DCT_CONST_BITS);
u[30] = _mm_srai_epi32(v[30], DCT_CONST_BITS);
u[31] = _mm_srai_epi32(v[31], DCT_CONST_BITS);
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]);
v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING);
v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING);
v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING);
v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING);
v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING);
v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING);
v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING);
v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING);
v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING);
v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING);
v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING);
u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS);
u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS);
u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS);
u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS);
u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS);
u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS);
u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS);
u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS);
u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS);
u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS);
u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS);
u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS);
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]);
u[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING);
u[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING);
u[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING);
u[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING);
u[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING);
u[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING);
u[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING);
u[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING);
u[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING);
v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS);
v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS);
v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS);
v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS);
v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS);
v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS);
v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS);
v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS);
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 *in0, __m128i *in1) {
transpose_16bit_16x16(in0, in1);
idct16_8col(in0);
idct16_8col(in1);
}
void iadst16_sse2(__m128i *in0, __m128i *in1) {
transpose_16bit_16x16(in0, in1);
iadst16_8col(in0);
iadst16_8col(in1);
}
#define IDCT32_34 \
/* Stage1 */ \
multiplication_and_add_2(&in[1], &zero, &stg1_0, &stg1_1, &stp1_16, \
&stp1_31); \
multiplication_and_add_2(&zero, &in[7], &stg1_6, &stg1_7, &stp1_19, \
&stp1_28); \
multiplication_and_add_2(&in[5], &zero, &stg1_8, &stg1_9, &stp1_20, \
&stp1_27); \
multiplication_and_add_2(&zero, &in[3], &stg1_14, &stg1_15, &stp1_23, \
&stp1_24); \
\
/* Stage2 */ \
multiplication_and_add_2(&in[2], &zero, &stg2_0, &stg2_1, &stp2_8, \
&stp2_15); \
multiplication_and_add_2(&zero, &in[6], &stg2_6, &stg2_7, &stp2_11, \
&stp2_12); \
\
stp2_16 = stp1_16; \
stp2_19 = stp1_19; \
\
stp2_20 = stp1_20; \
stp2_23 = stp1_23; \
\
stp2_24 = stp1_24; \
stp2_27 = stp1_27; \
\
stp2_28 = stp1_28; \
stp2_31 = stp1_31; \
\
/* Stage3 */ \
multiplication_and_add_2(&in[4], &zero, &stg3_0, &stg3_1, &stp1_4, &stp1_7); \
\
stp1_8 = stp2_8; \
stp1_11 = stp2_11; \
stp1_12 = stp2_12; \
stp1_15 = stp2_15; \
\
multiplication_and_add(&stp1_16, &stp1_31, &stp1_19, &stp1_28, &stg3_4, \
&stg3_5, &stg3_6, &stg3_4, &stp1_17, &stp1_30, \
&stp1_18, &stp1_29); \
\
multiplication_and_add(&stp1_20, &stp1_27, &stp1_23, &stp1_24, &stg3_8, \
&stg3_9, &stg3_10, &stg3_8, &stp1_21, &stp1_26, \
&stp1_22, &stp1_25); \
\
stp1_16 = stp2_16; \
stp1_31 = stp2_31; \
stp1_19 = stp2_19; \
stp1_20 = stp2_20; \
stp1_23 = stp2_23; \
stp1_24 = stp2_24; \
stp1_27 = stp2_27; \
stp1_28 = stp2_28; \
\
/* Stage4 */ \
multiplication_and_add_2(&in[0], &zero, &stg4_0, &stg4_1, &stp2_0, &stp2_1); \
\
stp2_4 = stp1_4; \
stp2_5 = stp1_4; \
stp2_6 = stp1_7; \
stp2_7 = stp1_7; \
\
multiplication_and_add(&stp2_8, &stp2_15, &stp2_11, &stp2_12, &stg4_4, \
&stg4_5, &stg4_6, &stg4_4, &stp2_9, &stp2_14, \
&stp2_10, &stp2_13); \
\
stp2_8 = stp1_8; \
stp2_15 = stp1_15; \
stp2_11 = stp1_11; \
stp2_12 = stp1_12; \
\
stp2_16 = _mm_add_epi16(stp1_16, stp1_19); \
stp2_17 = _mm_add_epi16(stp1_17, stp1_18); \
stp2_18 = _mm_sub_epi16(stp1_17, stp1_18); \
stp2_19 = _mm_sub_epi16(stp1_16, stp1_19); \
stp2_20 = _mm_sub_epi16(stp1_23, stp1_20); \
stp2_21 = _mm_sub_epi16(stp1_22, stp1_21); \
stp2_22 = _mm_add_epi16(stp1_22, stp1_21); \
stp2_23 = _mm_add_epi16(stp1_23, stp1_20); \
\
stp2_24 = _mm_add_epi16(stp1_24, stp1_27); \
stp2_25 = _mm_add_epi16(stp1_25, stp1_26); \
stp2_26 = _mm_sub_epi16(stp1_25, stp1_26); \
stp2_27 = _mm_sub_epi16(stp1_24, stp1_27); \
stp2_28 = _mm_sub_epi16(stp1_31, stp1_28); \
stp2_29 = _mm_sub_epi16(stp1_30, stp1_29); \
stp2_30 = _mm_add_epi16(stp1_29, stp1_30); \
stp2_31 = _mm_add_epi16(stp1_28, stp1_31); \
\
/* Stage5 */ \
stp1_0 = stp2_0; \
stp1_1 = stp2_1; \
stp1_2 = stp2_1; \
stp1_3 = stp2_0; \
multiplication_and_add_2(&stp2_6, &stp2_5, &stg4_1, &stg4_0, &stp1_5, \
&stp1_6); \
\
stp1_4 = stp2_4; \
stp1_7 = stp2_7; \
\
stp1_8 = _mm_add_epi16(stp2_8, stp2_11); \
stp1_9 = _mm_add_epi16(stp2_9, stp2_10); \
stp1_10 = _mm_sub_epi16(stp2_9, stp2_10); \
stp1_11 = _mm_sub_epi16(stp2_8, stp2_11); \
stp1_12 = _mm_sub_epi16(stp2_15, stp2_12); \
stp1_13 = _mm_sub_epi16(stp2_14, stp2_13); \
stp1_14 = _mm_add_epi16(stp2_14, stp2_13); \
stp1_15 = _mm_add_epi16(stp2_15, stp2_12); \
\
stp1_16 = stp2_16; \
stp1_17 = stp2_17; \
\
multiplication_and_add(&stp2_18, &stp2_29, &stp2_19, &stp2_28, &stg4_4, \
&stg4_5, &stg4_4, &stg4_5, &stp1_18, &stp1_29, \
&stp1_19, &stp1_28); \
multiplication_and_add(&stp2_20, &stp2_27, &stp2_21, &stp2_26, &stg4_6, \
&stg4_4, &stg4_6, &stg4_4, &stp1_20, &stp1_27, \
&stp1_21, &stp1_26); \
\
stp1_22 = stp2_22; \
stp1_23 = stp2_23; \
stp1_24 = stp2_24; \
stp1_25 = stp2_25; \
stp1_30 = stp2_30; \
stp1_31 = stp2_31; \
\
/* Stage6 */ \
stp2_0 = _mm_add_epi16(stp1_0, stp1_7); \
stp2_1 = _mm_add_epi16(stp1_1, stp1_6); \
stp2_2 = _mm_add_epi16(stp1_2, stp1_5); \
stp2_3 = _mm_add_epi16(stp1_3, stp1_4); \
stp2_4 = _mm_sub_epi16(stp1_3, stp1_4); \
stp2_5 = _mm_sub_epi16(stp1_2, stp1_5); \
stp2_6 = _mm_sub_epi16(stp1_1, stp1_6); \
stp2_7 = _mm_sub_epi16(stp1_0, stp1_7); \
\
stp2_8 = stp1_8; \
stp2_9 = stp1_9; \
stp2_14 = stp1_14; \
stp2_15 = stp1_15; \
\
multiplication_and_add(&stp1_10, &stp1_13, &stp1_11, &stp1_12, &stg6_0, \
&stg4_0, &stg6_0, &stg4_0, &stp2_10, &stp2_13, \
&stp2_11, &stp2_12); \
\
stp2_16 = _mm_add_epi16(stp1_16, stp1_23); \
stp2_17 = _mm_add_epi16(stp1_17, stp1_22); \
stp2_18 = _mm_add_epi16(stp1_18, stp1_21); \
stp2_19 = _mm_add_epi16(stp1_19, stp1_20); \
stp2_20 = _mm_sub_epi16(stp1_19, stp1_20); \
stp2_21 = _mm_sub_epi16(stp1_18, stp1_21); \
stp2_22 = _mm_sub_epi16(stp1_17, stp1_22); \
stp2_23 = _mm_sub_epi16(stp1_16, stp1_23); \
\
stp2_24 = _mm_sub_epi16(stp1_31, stp1_24); \
stp2_25 = _mm_sub_epi16(stp1_30, stp1_25); \
stp2_26 = _mm_sub_epi16(stp1_29, stp1_26); \
stp2_27 = _mm_sub_epi16(stp1_28, stp1_27); \
stp2_28 = _mm_add_epi16(stp1_27, stp1_28); \
stp2_29 = _mm_add_epi16(stp1_26, stp1_29); \
stp2_30 = _mm_add_epi16(stp1_25, stp1_30); \
stp2_31 = _mm_add_epi16(stp1_24, stp1_31); \
\
/* Stage7 */ \
stp1_0 = _mm_add_epi16(stp2_0, stp2_15); \
stp1_1 = _mm_add_epi16(stp2_1, stp2_14); \
stp1_2 = _mm_add_epi16(stp2_2, stp2_13); \
stp1_3 = _mm_add_epi16(stp2_3, stp2_12); \
stp1_4 = _mm_add_epi16(stp2_4, stp2_11); \
stp1_5 = _mm_add_epi16(stp2_5, stp2_10); \
stp1_6 = _mm_add_epi16(stp2_6, stp2_9); \
stp1_7 = _mm_add_epi16(stp2_7, stp2_8); \
stp1_8 = _mm_sub_epi16(stp2_7, stp2_8); \
stp1_9 = _mm_sub_epi16(stp2_6, stp2_9); \
stp1_10 = _mm_sub_epi16(stp2_5, stp2_10); \
stp1_11 = _mm_sub_epi16(stp2_4, stp2_11); \
stp1_12 = _mm_sub_epi16(stp2_3, stp2_12); \
stp1_13 = _mm_sub_epi16(stp2_2, stp2_13); \
stp1_14 = _mm_sub_epi16(stp2_1, stp2_14); \
stp1_15 = _mm_sub_epi16(stp2_0, stp2_15); \
\
stp1_16 = stp2_16; \
stp1_17 = stp2_17; \
stp1_18 = stp2_18; \
stp1_19 = stp2_19; \
\
multiplication_and_add(&stp2_20, &stp2_27, &stp2_21, &stp2_26, &stg6_0, \
&stg4_0, &stg6_0, &stg4_0, &stp1_20, &stp1_27, \
&stp1_21, &stp1_26); \
multiplication_and_add(&stp2_22, &stp2_25, &stp2_23, &stp2_24, &stg6_0, \
&stg4_0, &stg6_0, &stg4_0, &stp1_22, &stp1_25, \
&stp1_23, &stp1_24); \
\
stp1_28 = stp2_28; \
stp1_29 = stp2_29; \
stp1_30 = stp2_30; \
stp1_31 = stp2_31;
// Only upper-left 8x8 has non-zero coeff
void vpx_idct32x32_34_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
const __m128i zero = _mm_setzero_si128();
// idct constants for each stage
const __m128i stg1_0 = pair_set_epi16(cospi_31_64, -cospi_1_64);
const __m128i stg1_1 = pair_set_epi16(cospi_1_64, cospi_31_64);
const __m128i stg1_6 = pair_set_epi16(cospi_7_64, -cospi_25_64);
const __m128i stg1_7 = pair_set_epi16(cospi_25_64, cospi_7_64);
const __m128i stg1_8 = pair_set_epi16(cospi_27_64, -cospi_5_64);
const __m128i stg1_9 = pair_set_epi16(cospi_5_64, cospi_27_64);
const __m128i stg1_14 = pair_set_epi16(cospi_3_64, -cospi_29_64);
const __m128i stg1_15 = pair_set_epi16(cospi_29_64, cospi_3_64);
const __m128i stg2_0 = pair_set_epi16(cospi_30_64, -cospi_2_64);
const __m128i stg2_1 = pair_set_epi16(cospi_2_64, cospi_30_64);
const __m128i stg2_6 = pair_set_epi16(cospi_6_64, -cospi_26_64);
const __m128i stg2_7 = pair_set_epi16(cospi_26_64, cospi_6_64);
const __m128i stg3_0 = pair_set_epi16(cospi_28_64, -cospi_4_64);
const __m128i stg3_1 = pair_set_epi16(cospi_4_64, cospi_28_64);
const __m128i stg3_4 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i stg3_5 = pair_set_epi16(cospi_28_64, cospi_4_64);
const __m128i stg3_6 = pair_set_epi16(-cospi_28_64, -cospi_4_64);
const __m128i stg3_8 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i stg3_9 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i stg3_10 = pair_set_epi16(-cospi_12_64, -cospi_20_64);
const __m128i stg4_0 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i stg4_1 = pair_set_epi16(cospi_16_64, -cospi_16_64);
const __m128i stg4_4 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i stg4_5 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i stg4_6 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
const __m128i stg6_0 = pair_set_epi16(-cospi_16_64, cospi_16_64);
__m128i in[32], col[32];
__m128i stp1_0, stp1_1, stp1_2, stp1_3, stp1_4, stp1_5, stp1_6, stp1_7,
stp1_8, stp1_9, stp1_10, stp1_11, stp1_12, stp1_13, stp1_14, stp1_15,
stp1_16, stp1_17, stp1_18, stp1_19, stp1_20, stp1_21, stp1_22, stp1_23,
stp1_24, stp1_25, stp1_26, stp1_27, stp1_28, stp1_29, stp1_30, stp1_31;
__m128i stp2_0, stp2_1, stp2_2, stp2_3, stp2_4, stp2_5, stp2_6, stp2_7,
stp2_8, stp2_9, stp2_10, stp2_11, stp2_12, stp2_13, stp2_14, stp2_15,
stp2_16, stp2_17, stp2_18, stp2_19, stp2_20, stp2_21, stp2_22, stp2_23,
stp2_24, stp2_25, stp2_26, stp2_27, stp2_28, stp2_29, stp2_30, stp2_31;
int i;
// Load input data. Only need to load the top left 8x8 block.
in[0] = load_input_data8(input + 0 * 32);
in[1] = load_input_data8(input + 1 * 32);
in[2] = load_input_data8(input + 2 * 32);
in[3] = load_input_data8(input + 3 * 32);
in[4] = load_input_data8(input + 4 * 32);
in[5] = load_input_data8(input + 5 * 32);
in[6] = load_input_data8(input + 6 * 32);
in[7] = load_input_data8(input + 7 * 32);
transpose_16bit_8x8(in, in);
IDCT32_34
// 1_D: Store 32 intermediate results for each 8x32 block.
col[0] = _mm_add_epi16(stp1_0, stp1_31);
col[1] = _mm_add_epi16(stp1_1, stp1_30);
col[2] = _mm_add_epi16(stp1_2, stp1_29);
col[3] = _mm_add_epi16(stp1_3, stp1_28);
col[4] = _mm_add_epi16(stp1_4, stp1_27);
col[5] = _mm_add_epi16(stp1_5, stp1_26);
col[6] = _mm_add_epi16(stp1_6, stp1_25);
col[7] = _mm_add_epi16(stp1_7, stp1_24);
col[8] = _mm_add_epi16(stp1_8, stp1_23);
col[9] = _mm_add_epi16(stp1_9, stp1_22);
col[10] = _mm_add_epi16(stp1_10, stp1_21);
col[11] = _mm_add_epi16(stp1_11, stp1_20);
col[12] = _mm_add_epi16(stp1_12, stp1_19);
col[13] = _mm_add_epi16(stp1_13, stp1_18);
col[14] = _mm_add_epi16(stp1_14, stp1_17);
col[15] = _mm_add_epi16(stp1_15, stp1_16);
col[16] = _mm_sub_epi16(stp1_15, stp1_16);
col[17] = _mm_sub_epi16(stp1_14, stp1_17);
col[18] = _mm_sub_epi16(stp1_13, stp1_18);
col[19] = _mm_sub_epi16(stp1_12, stp1_19);
col[20] = _mm_sub_epi16(stp1_11, stp1_20);
col[21] = _mm_sub_epi16(stp1_10, stp1_21);
col[22] = _mm_sub_epi16(stp1_9, stp1_22);
col[23] = _mm_sub_epi16(stp1_8, stp1_23);
col[24] = _mm_sub_epi16(stp1_7, stp1_24);
col[25] = _mm_sub_epi16(stp1_6, stp1_25);
col[26] = _mm_sub_epi16(stp1_5, stp1_26);
col[27] = _mm_sub_epi16(stp1_4, stp1_27);
col[28] = _mm_sub_epi16(stp1_3, stp1_28);
col[29] = _mm_sub_epi16(stp1_2, stp1_29);
col[30] = _mm_sub_epi16(stp1_1, stp1_30);
col[31] = _mm_sub_epi16(stp1_0, stp1_31);
for (i = 0; i < 4; i++) {
int j;
// Transpose 32x8 block to 8x32 block
transpose_16bit_8x8(col + i * 8, in);
IDCT32_34
// 2_D: Calculate the results and store them to destination.
in[0] = _mm_add_epi16(stp1_0, stp1_31);
in[1] = _mm_add_epi16(stp1_1, stp1_30);
in[2] = _mm_add_epi16(stp1_2, stp1_29);
in[3] = _mm_add_epi16(stp1_3, stp1_28);
in[4] = _mm_add_epi16(stp1_4, stp1_27);
in[5] = _mm_add_epi16(stp1_5, stp1_26);
in[6] = _mm_add_epi16(stp1_6, stp1_25);
in[7] = _mm_add_epi16(stp1_7, stp1_24);
in[8] = _mm_add_epi16(stp1_8, stp1_23);
in[9] = _mm_add_epi16(stp1_9, stp1_22);
in[10] = _mm_add_epi16(stp1_10, stp1_21);
in[11] = _mm_add_epi16(stp1_11, stp1_20);
in[12] = _mm_add_epi16(stp1_12, stp1_19);
in[13] = _mm_add_epi16(stp1_13, stp1_18);
in[14] = _mm_add_epi16(stp1_14, stp1_17);
in[15] = _mm_add_epi16(stp1_15, stp1_16);
in[16] = _mm_sub_epi16(stp1_15, stp1_16);
in[17] = _mm_sub_epi16(stp1_14, stp1_17);
in[18] = _mm_sub_epi16(stp1_13, stp1_18);
in[19] = _mm_sub_epi16(stp1_12, stp1_19);
in[20] = _mm_sub_epi16(stp1_11, stp1_20);
in[21] = _mm_sub_epi16(stp1_10, stp1_21);
in[22] = _mm_sub_epi16(stp1_9, stp1_22);
in[23] = _mm_sub_epi16(stp1_8, stp1_23);
in[24] = _mm_sub_epi16(stp1_7, stp1_24);
in[25] = _mm_sub_epi16(stp1_6, stp1_25);
in[26] = _mm_sub_epi16(stp1_5, stp1_26);
in[27] = _mm_sub_epi16(stp1_4, stp1_27);
in[28] = _mm_sub_epi16(stp1_3, stp1_28);
in[29] = _mm_sub_epi16(stp1_2, stp1_29);
in[30] = _mm_sub_epi16(stp1_1, stp1_30);
in[31] = _mm_sub_epi16(stp1_0, stp1_31);
for (j = 0; j < 32; ++j) {
write_buffer_8x1(dest + j * stride, in[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 in[32]
static void idct32_full_8x32_quarter_1(const __m128i *in /*in[32]*/,
__m128i *out /*out[8]*/) {
__m128i u0, u1, u2, u3, u4, u5, u6, u7; // stp1_
__m128i v0, v1, v2, v3, v4, v5, v6, v7; // stp2_
{
const __m128i stg3_0 = pair_set_epi16(cospi_28_64, -cospi_4_64);
const __m128i stg3_1 = pair_set_epi16(cospi_4_64, cospi_28_64);
const __m128i stg3_2 = pair_set_epi16(cospi_12_64, -cospi_20_64);
const __m128i stg3_3 = pair_set_epi16(cospi_20_64, cospi_12_64);
butterfly(&in[4], &in[28], &stg3_0, &stg3_1, &u4, &u7);
butterfly(&in[20], &in[12], &stg3_2, &stg3_3, &u5, &u6);
}
v4 = _mm_add_epi16(u4, u5);
v5 = _mm_sub_epi16(u4, u5);
v6 = _mm_sub_epi16(u7, u6);
v7 = _mm_add_epi16(u7, u6);
{
const __m128i stg4_0 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i stg4_1 = pair_set_epi16(cospi_16_64, -cospi_16_64);
const __m128i stg4_2 = pair_set_epi16(cospi_24_64, -cospi_8_64);
const __m128i stg4_3 = pair_set_epi16(cospi_8_64, cospi_24_64);
butterfly(&v6, &v5, &stg4_1, &stg4_0, &v5, &v6);
butterfly(&in[0], &in[16], &stg4_0, &stg4_1, &u0, &u1);
butterfly(&in[8], &in[24], &stg4_2, &stg4_3, &u2, &u3);
}
v0 = _mm_add_epi16(u0, u3);
v1 = _mm_add_epi16(u1, u2);
v2 = _mm_sub_epi16(u1, u2);
v3 = _mm_sub_epi16(u0, u3);
out[0] = _mm_add_epi16(v0, v7);
out[1] = _mm_add_epi16(v1, v6);
out[2] = _mm_add_epi16(v2, v5);
out[3] = _mm_add_epi16(v3, v4);
out[4] = _mm_sub_epi16(v3, v4);
out[5] = _mm_sub_epi16(v2, v5);
out[6] = _mm_sub_epi16(v1, v6);
out[7] = _mm_sub_epi16(v0, v7);
}
// For each 8x32 block __m128i in[32],
// Input with index, 2, 6, 10, 14, 18, 22, 26, 30
// output pixels: 8-15 in __m128i in[32]
static void idct32_full_8x32_quarter_2(const __m128i *in /*in[32]*/,
__m128i *out /*out[16]*/) {
__m128i u8, u9, u10, u11, u12, u13, u14, u15; // stp2_
__m128i v8, v9, v10, v11, v12, v13, v14, v15; // stp1_
{
const __m128i stg2_0 = pair_set_epi16(cospi_30_64, -cospi_2_64);
const __m128i stg2_1 = pair_set_epi16(cospi_2_64, cospi_30_64);
const __m128i stg2_2 = pair_set_epi16(cospi_14_64, -cospi_18_64);
const __m128i stg2_3 = pair_set_epi16(cospi_18_64, cospi_14_64);
butterfly(&in[2], &in[30], &stg2_0, &stg2_1, &u8, &u15);
butterfly(&in[18], &in[14], &stg2_2, &stg2_3, &u9, &u14);
}
v8 = _mm_add_epi16(u8, u9);
v9 = _mm_sub_epi16(u8, u9);
v14 = _mm_sub_epi16(u15, u14);
v15 = _mm_add_epi16(u15, u14);
{
const __m128i stg2_4 = pair_set_epi16(cospi_22_64, -cospi_10_64);
const __m128i stg2_5 = pair_set_epi16(cospi_10_64, cospi_22_64);
const __m128i stg2_6 = pair_set_epi16(cospi_6_64, -cospi_26_64);
const __m128i stg2_7 = pair_set_epi16(cospi_26_64, cospi_6_64);
butterfly(&in[10], &in[22], &stg2_4, &stg2_5, &u10, &u13);
butterfly(&in[26], &in[6], &stg2_6, &stg2_7, &u11, &u12);
}
v10 = _mm_sub_epi16(u11, u10);
v11 = _mm_add_epi16(u11, u10);
v12 = _mm_add_epi16(u12, u13);
v13 = _mm_sub_epi16(u12, u13);
{
const __m128i stg4_4 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i stg4_5 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i stg4_6 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
butterfly_self(&v9, &v14, &stg4_4, &stg4_5);
butterfly_self(&v10, &v13, &stg4_6, &stg4_4);
}
out[0] = _mm_add_epi16(v8, v11);
out[1] = _mm_add_epi16(v9, v10);
out[6] = _mm_add_epi16(v14, v13);
out[7] = _mm_add_epi16(v15, v12);
out[2] = _mm_sub_epi16(v9, v10);
out[3] = _mm_sub_epi16(v8, v11);
out[4] = _mm_sub_epi16(v15, v12);
out[5] = _mm_sub_epi16(v14, v13);
{
const __m128i stg4_0 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i stg6_0 = pair_set_epi16(-cospi_16_64, cospi_16_64);
butterfly_self(&out[2], &out[5], &stg6_0, &stg4_0);
butterfly_self(&out[3], &out[4], &stg6_0, &stg4_0);
}
}
// 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 in[32]
// We avoid hide an offset, 16, inside this function. So we output 0-15 into
// array out[16]
static void idct32_full_8x32_quarter_3_4(const __m128i *in /*in[32]*/,
__m128i *out /*out[16]*/) {
__m128i v16, v17, v18, v19, v20, v21, v22, v23;
__m128i v24, v25, v26, v27, v28, v29, v30, v31;
__m128i u16, u17, u18, u19, u20, u21, u22, u23;
__m128i u24, u25, u26, u27, u28, u29, u30, u31;
{
const __m128i stg1_0 = pair_set_epi16(cospi_31_64, -cospi_1_64);
const __m128i stg1_1 = pair_set_epi16(cospi_1_64, cospi_31_64);
const __m128i stg1_2 = pair_set_epi16(cospi_15_64, -cospi_17_64);
const __m128i stg1_3 = pair_set_epi16(cospi_17_64, cospi_15_64);
const __m128i stg1_4 = pair_set_epi16(cospi_23_64, -cospi_9_64);
const __m128i stg1_5 = pair_set_epi16(cospi_9_64, cospi_23_64);
const __m128i stg1_6 = pair_set_epi16(cospi_7_64, -cospi_25_64);
const __m128i stg1_7 = pair_set_epi16(cospi_25_64, cospi_7_64);
const __m128i stg1_8 = pair_set_epi16(cospi_27_64, -cospi_5_64);
const __m128i stg1_9 = pair_set_epi16(cospi_5_64, cospi_27_64);
const __m128i stg1_10 = pair_set_epi16(cospi_11_64, -cospi_21_64);
const __m128i stg1_11 = pair_set_epi16(cospi_21_64, cospi_11_64);
const __m128i stg1_12 = pair_set_epi16(cospi_19_64, -cospi_13_64);
const __m128i stg1_13 = pair_set_epi16(cospi_13_64, cospi_19_64);
const __m128i stg1_14 = pair_set_epi16(cospi_3_64, -cospi_29_64);
const __m128i stg1_15 = pair_set_epi16(cospi_29_64, cospi_3_64);
butterfly(&in[1], &in[31], &stg1_0, &stg1_1, &u16, &u31);
butterfly(&in[17], &in[15], &stg1_2, &stg1_3, &u17, &u30);
butterfly(&in[9], &in[23], &stg1_4, &stg1_5, &u18, &u29);
butterfly(&in[25], &in[7], &stg1_6, &stg1_7, &u19, &u28);
butterfly(&in[5], &in[27], &stg1_8, &stg1_9, &u20, &u27);
butterfly(&in[21], &in[11], &stg1_10, &stg1_11, &u21, &u26);
butterfly(&in[13], &in[19], &stg1_12, &stg1_13, &u22, &u25);
butterfly(&in[29], &in[3], &stg1_14, &stg1_15, &u23, &u24);
}
v16 = _mm_add_epi16(u16, u17);
v17 = _mm_sub_epi16(u16, u17);
v18 = _mm_sub_epi16(u19, u18);
v19 = _mm_add_epi16(u19, u18);
v20 = _mm_add_epi16(u20, u21);
v21 = _mm_sub_epi16(u20, u21);
v22 = _mm_sub_epi16(u23, u22);
v23 = _mm_add_epi16(u23, u22);
v24 = _mm_add_epi16(u24, u25);
v25 = _mm_sub_epi16(u24, u25);
v26 = _mm_sub_epi16(u27, u26);
v27 = _mm_add_epi16(u27, u26);
v28 = _mm_add_epi16(u28, u29);
v29 = _mm_sub_epi16(u28, u29);
v30 = _mm_sub_epi16(u31, u30);
v31 = _mm_add_epi16(u31, u30);
{
const __m128i stg3_4 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i stg3_5 = pair_set_epi16(cospi_28_64, cospi_4_64);
const __m128i stg3_6 = pair_set_epi16(-cospi_28_64, -cospi_4_64);
const __m128i stg3_8 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i stg3_9 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i stg3_10 = pair_set_epi16(-cospi_12_64, -cospi_20_64);
butterfly_self(&v17, &v30, &stg3_4, &stg3_5);
butterfly_self(&v18, &v29, &stg3_6, &stg3_4);
butterfly_self(&v21, &v26, &stg3_8, &stg3_9);
butterfly_self(&v22, &v25, &stg3_10, &stg3_8);
}
u16 = _mm_add_epi16(v16, v19);
u17 = _mm_add_epi16(v17, v18);
u18 = _mm_sub_epi16(v17, v18);
u19 = _mm_sub_epi16(v16, v19);
u20 = _mm_sub_epi16(v23, v20);
u21 = _mm_sub_epi16(v22, v21);
u22 = _mm_add_epi16(v22, v21);
u23 = _mm_add_epi16(v23, v20);
u24 = _mm_add_epi16(v24, v27);
u25 = _mm_add_epi16(v25, v26);
u26 = _mm_sub_epi16(v25, v26);
u27 = _mm_sub_epi16(v24, v27);
u28 = _mm_sub_epi16(v31, v28);
u29 = _mm_sub_epi16(v30, v29);
u30 = _mm_add_epi16(v29, v30);
u31 = _mm_add_epi16(v28, v31);
{
const __m128i stg4_4 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i stg4_5 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i stg4_6 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
butterfly_self(&u18, &u29, &stg4_4, &stg4_5);
butterfly_self(&u19, &u28, &stg4_4, &stg4_5);
butterfly_self(&u20, &u27, &stg4_6, &stg4_4);
butterfly_self(&u21, &u26, &stg4_6, &stg4_4);
}
out[0] = _mm_add_epi16(u16, u23);
out[1] = _mm_add_epi16(u17, u22);
out[2] = _mm_add_epi16(u18, u21);
out[3] = _mm_add_epi16(u19, u20);
out[4] = _mm_sub_epi16(u19, u20);
out[5] = _mm_sub_epi16(u18, u21);
out[6] = _mm_sub_epi16(u17, u22);
out[7] = _mm_sub_epi16(u16, u23);
out[8] = _mm_sub_epi16(u31, u24);
out[9] = _mm_sub_epi16(u30, u25);
out[10] = _mm_sub_epi16(u29, u26);
out[11] = _mm_sub_epi16(u28, u27);
out[12] = _mm_add_epi16(u27, u28);
out[13] = _mm_add_epi16(u26, u29);
out[14] = _mm_add_epi16(u25, u30);
out[15] = _mm_add_epi16(u24, u31);
{
const __m128i stg4_0 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i stg6_0 = pair_set_epi16(-cospi_16_64, cospi_16_64);
butterfly_self(&out[4], &out[11], &stg6_0, &stg4_0);
butterfly_self(&out[5], &out[10], &stg6_0, &stg4_0);
butterfly_self(&out[6], &out[9], &stg6_0, &stg4_0);
butterfly_self(&out[7], &out[8], &stg6_0, &stg4_0);
}
}
static void idct32_full_8x32_quarter_1_2(const __m128i *in /*in[32]*/,
__m128i *out /*out[32]*/) {
__m128i temp[16];
idct32_full_8x32_quarter_1(in, temp);
idct32_full_8x32_quarter_2(in, &temp[8]);
add_sub_butterfly(temp, out, 16);
}
static void idct32_full_8x32(const __m128i *in /*in[32]*/,
__m128i *out /*out[32]*/) {
__m128i temp[32];
idct32_full_8x32_quarter_1_2(in, temp);
idct32_full_8x32_quarter_3_4(in, &temp[16]);
add_sub_butterfly(temp, out, 32);
}
static void load_buffer_8x32(const tran_low_t *input, __m128i *in) {
int i;
for (i = 0; i < 8; ++i) {
in[i] = load_input_data8(input);
in[i + 8] = load_input_data8(input + 8);
in[i + 16] = load_input_data8(input + 16);
in[i + 24] = load_input_data8(input + 24);
input += 32;
}
}
void vpx_idct32x32_1024_add_sse2(const tran_low_t *input, uint8_t *dest,
int stride) {
__m128i col[128], in[32];
int i, j;
// rows
for (i = 0; i < 4; ++i) {
load_buffer_8x32(input, in);
input += 32 << 3;
// Transpose 32x8 block to 8x32 block
transpose_16bit_8x8(in, in);
transpose_16bit_8x8(in + 8, in + 8);
transpose_16bit_8x8(in + 16, in + 16);
transpose_16bit_8x8(in + 24, in + 24);
idct32_full_8x32(in, col + (i << 5));
}
// columns
for (i = 0; i < 4; ++i) {
j = i << 3;
// Transpose 32x8 block to 8x32 block
transpose_16bit_8x8(col + j, in);
transpose_16bit_8x8(col + j + 32, in + 8);
transpose_16bit_8x8(col + j + 64, in + 16);
transpose_16bit_8x8(col + j + 96, in + 24);
idct32_full_8x32(in, in);
store_buffer_8x32(in, 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(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);
}
}