ref: 12f5762756f90b04a23d25c29cb9866904fbde56
dir: /vp9/encoder/x86/vp9_dct_sse2.c/
/*
* Copyright (c) 2012 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 "vp9/common/vp9_idct.h" // for cospi constants
#include "vpx_ports/mem.h"
void vp9_short_fdct4x4_sse2(int16_t *input, int16_t *output, int pitch) {
// The 2D transform is done with two passes which are actually pretty
// similar. In the first one, we transform the columns and transpose
// the results. In the second one, we transform the rows. To achieve that,
// as the first pass results are transposed, we tranpose the columns (that
// is the transposed rows) and transpose the results (so that it goes back
// in normal/row positions).
const int stride = pitch >> 1;
int pass;
// Constants
// When we use them, in one case, they are all the same. In all others
// it's a pair of them that we need to repeat four times. This is done
// by constructing the 32 bit constant corresponding to that pair.
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_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1);
const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0);
const __m128i kOne = _mm_set1_epi16(1);
__m128i in0, in1, in2, in3;
// Load inputs.
{
in0 = _mm_loadl_epi64((const __m128i *)(input + 0 * stride));
in1 = _mm_loadl_epi64((const __m128i *)(input + 1 * stride));
in2 = _mm_loadl_epi64((const __m128i *)(input + 2 * stride));
in3 = _mm_loadl_epi64((const __m128i *)(input + 3 * stride));
// x = x << 4
in0 = _mm_slli_epi16(in0, 4);
in1 = _mm_slli_epi16(in1, 4);
in2 = _mm_slli_epi16(in2, 4);
in3 = _mm_slli_epi16(in3, 4);
// if (i == 0 && input[0]) input[0] += 1;
{
// The mask will only contain wether the first value is zero, all
// other comparison will fail as something shifted by 4 (above << 4)
// can never be equal to one. To increment in the non-zero case, we
// add the mask and one for the first element:
// - if zero, mask = -1, v = v - 1 + 1 = v
// - if non-zero, mask = 0, v = v + 0 + 1 = v + 1
__m128i mask = _mm_cmpeq_epi16(in0, k__nonzero_bias_a);
in0 = _mm_add_epi16(in0, mask);
in0 = _mm_add_epi16(in0, k__nonzero_bias_b);
}
}
// Do the two transform/transpose passes
for (pass = 0; pass < 2; ++pass) {
// Transform 1/2: Add/substract
const __m128i r0 = _mm_add_epi16(in0, in3);
const __m128i r1 = _mm_add_epi16(in1, in2);
const __m128i r2 = _mm_sub_epi16(in1, in2);
const __m128i r3 = _mm_sub_epi16(in0, in3);
// Transform 1/2: Interleave to do the multiply by constants which gets us
// into 32 bits.
const __m128i t0 = _mm_unpacklo_epi16(r0, r1);
const __m128i t2 = _mm_unpacklo_epi16(r2, r3);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16);
const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16);
const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08);
const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24);
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
// Combine and transpose
const __m128i res0 = _mm_packs_epi32(w0, w2);
const __m128i res1 = _mm_packs_epi32(w4, w6);
// 00 01 02 03 20 21 22 23
// 10 11 12 13 30 31 32 33
const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1);
const __m128i tr0_1 = _mm_unpackhi_epi16(res0, res1);
// 00 10 01 11 02 12 03 13
// 20 30 21 31 22 32 23 33
in0 = _mm_unpacklo_epi32(tr0_0, tr0_1);
in2 = _mm_unpackhi_epi32(tr0_0, tr0_1);
// 00 10 20 30 01 11 21 31 in0 contains 0 followed by 1
// 02 12 22 32 03 13 23 33 in2 contains 2 followed by 3
if (0 == pass) {
// Extract values in the high part for second pass as transform code
// only uses the first four values.
in1 = _mm_unpackhi_epi64(in0, in0);
in3 = _mm_unpackhi_epi64(in2, in2);
} else {
// Post-condition output and store it (v + 1) >> 2, taking advantage
// of the fact 1/3 are stored just after 0/2.
__m128i out01 = _mm_add_epi16(in0, kOne);
__m128i out23 = _mm_add_epi16(in2, kOne);
out01 = _mm_srai_epi16(out01, 2);
out23 = _mm_srai_epi16(out23, 2);
_mm_storeu_si128((__m128i *)(output + 0 * 4), out01);
_mm_storeu_si128((__m128i *)(output + 2 * 4), out23);
}
}
}
void vp9_short_fdct8x4_sse2(int16_t *input, int16_t *output, int pitch) {
vp9_short_fdct4x4_sse2(input, output, pitch);
vp9_short_fdct4x4_sse2(input + 4, output + 16, pitch);
}
static INLINE void load_buffer_4x4(int16_t *input, __m128i *in, int stride) {
const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1);
const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0);
__m128i mask;
in[0] = _mm_loadl_epi64((const __m128i *)(input + 0 * stride));
in[1] = _mm_loadl_epi64((const __m128i *)(input + 1 * stride));
in[2] = _mm_loadl_epi64((const __m128i *)(input + 2 * stride));
in[3] = _mm_loadl_epi64((const __m128i *)(input + 3 * stride));
in[0] = _mm_slli_epi16(in[0], 4);
in[1] = _mm_slli_epi16(in[1], 4);
in[2] = _mm_slli_epi16(in[2], 4);
in[3] = _mm_slli_epi16(in[3], 4);
mask = _mm_cmpeq_epi16(in[0], k__nonzero_bias_a);
in[0] = _mm_add_epi16(in[0], mask);
in[0] = _mm_add_epi16(in[0], k__nonzero_bias_b);
}
static INLINE void write_buffer_4x4(int16_t *output, __m128i *res) {
const __m128i kOne = _mm_set1_epi16(1);
__m128i in01 = _mm_unpacklo_epi64(res[0], res[1]);
__m128i in23 = _mm_unpacklo_epi64(res[2], res[3]);
__m128i out01 = _mm_add_epi16(in01, kOne);
__m128i out23 = _mm_add_epi16(in23, kOne);
out01 = _mm_srai_epi16(out01, 2);
out23 = _mm_srai_epi16(out23, 2);
_mm_store_si128((__m128i *)(output + 0 * 8), out01);
_mm_store_si128((__m128i *)(output + 1 * 8), out23);
}
static INLINE void transpose_4x4(__m128i *res) {
// Combine and transpose
// 00 01 02 03 20 21 22 23
// 10 11 12 13 30 31 32 33
const __m128i tr0_0 = _mm_unpacklo_epi16(res[0], res[1]);
const __m128i tr0_1 = _mm_unpackhi_epi16(res[0], res[1]);
// 00 10 01 11 02 12 03 13
// 20 30 21 31 22 32 23 33
res[0] = _mm_unpacklo_epi32(tr0_0, tr0_1);
res[2] = _mm_unpackhi_epi32(tr0_0, tr0_1);
// 00 10 20 30 01 11 21 31
// 02 12 22 32 03 13 23 33
// only use the first 4 16-bit integers
res[1] = _mm_unpackhi_epi64(res[0], res[0]);
res[3] = _mm_unpackhi_epi64(res[2], res[2]);
}
void fdct4_1d_sse2(__m128i *in) {
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_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
__m128i u[4], v[4];
u[0] = _mm_add_epi16(in[0], in[3]);
u[1] = _mm_add_epi16(in[1], in[2]);
u[2] = _mm_sub_epi16(in[1], in[2]);
u[3] = _mm_sub_epi16(in[0], in[3]);
v[0] = _mm_unpacklo_epi16(u[0], u[1]);
v[1] = _mm_unpacklo_epi16(u[2], u[3]);
u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16); // 0
u[1] = _mm_madd_epi16(v[0], k__cospi_p16_m16); // 2
u[2] = _mm_madd_epi16(v[1], k__cospi_p24_p08); // 1
u[3] = _mm_madd_epi16(v[1], k__cospi_m08_p24); // 3
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);
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]);
transpose_4x4(in);
}
void fadst4_1d_sse2(__m128i *in) {
const __m128i k__sinpi_p01_p02 = pair_set_epi16(sinpi_1_9, sinpi_2_9);
const __m128i k__sinpi_p04_m01 = pair_set_epi16(sinpi_4_9, -sinpi_1_9);
const __m128i k__sinpi_p03_p04 = pair_set_epi16(sinpi_3_9, sinpi_4_9);
const __m128i k__sinpi_m03_p02 = pair_set_epi16(-sinpi_3_9, sinpi_2_9);
const __m128i k__sinpi_p03_p03 = _mm_set1_epi16(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];
__m128i in7 = _mm_add_epi16(in[0], in[1]);
in7 = _mm_sub_epi16(in7, in[3]);
u[0] = _mm_unpacklo_epi16(in[0], in[1]);
u[1] = _mm_unpacklo_epi16(in[2], in[3]);
u[2] = _mm_unpacklo_epi16(in7, kZero);
u[3] = _mm_unpacklo_epi16(in[2], kZero);
v[0] = _mm_madd_epi16(u[0], k__sinpi_p01_p02); // s0 + s2
v[1] = _mm_madd_epi16(u[1], k__sinpi_p03_p04); // s4 + s5
v[2] = _mm_madd_epi16(u[2], k__sinpi_p03_p03); // x1
v[3] = _mm_madd_epi16(u[0], k__sinpi_p04_m01); // s1 - s3
v[4] = _mm_madd_epi16(u[1], k__sinpi_m03_p02); // -s4 + s6
v[5] = _mm_madd_epi16(u[3], k__sinpi_p03_p03); // s4
u[0] = _mm_add_epi32(v[0], v[1]);
u[1] = v[2];
u[2] = _mm_add_epi32(v[3], v[4]);
u[3] = _mm_sub_epi32(u[2], u[0]);
u[4] = _mm_slli_epi32(v[5], 2);
u[5] = _mm_sub_epi32(u[4], v[5]);
u[6] = _mm_add_epi32(u[3], u[5]);
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[2]);
in[1] = _mm_packs_epi32(u[1], u[3]);
transpose_4x4(in);
}
void vp9_short_fht4x4_sse2(int16_t *input, int16_t *output,
int stride, int tx_type) {
__m128i in[4];
load_buffer_4x4(input, in, stride);
switch (tx_type) {
case 0: // DCT_DCT
fdct4_1d_sse2(in);
fdct4_1d_sse2(in);
break;
case 1: // ADST_DCT
fadst4_1d_sse2(in);
fdct4_1d_sse2(in);
break;
case 2: // DCT_ADST
fdct4_1d_sse2(in);
fadst4_1d_sse2(in);
break;
case 3: // ADST_ADST
fadst4_1d_sse2(in);
fadst4_1d_sse2(in);
break;
default:
assert(0);
break;
}
write_buffer_4x4(output, in);
}
void vp9_short_fdct8x8_sse2(int16_t *input, int16_t *output, int pitch) {
const int stride = pitch >> 1;
int pass;
// Constants
// When we use them, in one case, they are all the same. In all others
// it's a pair of them that we need to repeat four times. This is done
// by constructing the 32 bit constant corresponding to that pair.
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_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64);
const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
// Load input
__m128i in0 = _mm_load_si128((const __m128i *)(input + 0 * stride));
__m128i in1 = _mm_load_si128((const __m128i *)(input + 1 * stride));
__m128i in2 = _mm_load_si128((const __m128i *)(input + 2 * stride));
__m128i in3 = _mm_load_si128((const __m128i *)(input + 3 * stride));
__m128i in4 = _mm_load_si128((const __m128i *)(input + 4 * stride));
__m128i in5 = _mm_load_si128((const __m128i *)(input + 5 * stride));
__m128i in6 = _mm_load_si128((const __m128i *)(input + 6 * stride));
__m128i in7 = _mm_load_si128((const __m128i *)(input + 7 * stride));
// Pre-condition input (shift by two)
in0 = _mm_slli_epi16(in0, 2);
in1 = _mm_slli_epi16(in1, 2);
in2 = _mm_slli_epi16(in2, 2);
in3 = _mm_slli_epi16(in3, 2);
in4 = _mm_slli_epi16(in4, 2);
in5 = _mm_slli_epi16(in5, 2);
in6 = _mm_slli_epi16(in6, 2);
in7 = _mm_slli_epi16(in7, 2);
// We do two passes, first the columns, then the rows. The results of the
// first pass are transposed so that the same column code can be reused. The
// results of the second pass are also transposed so that the rows (processed
// as columns) are put back in row positions.
for (pass = 0; pass < 2; pass++) {
// To store results of each pass before the transpose.
__m128i res0, res1, res2, res3, res4, res5, res6, res7;
// Add/substract
const __m128i q0 = _mm_add_epi16(in0, in7);
const __m128i q1 = _mm_add_epi16(in1, in6);
const __m128i q2 = _mm_add_epi16(in2, in5);
const __m128i q3 = _mm_add_epi16(in3, in4);
const __m128i q4 = _mm_sub_epi16(in3, in4);
const __m128i q5 = _mm_sub_epi16(in2, in5);
const __m128i q6 = _mm_sub_epi16(in1, in6);
const __m128i q7 = _mm_sub_epi16(in0, in7);
// Work on first four results
{
// Add/substract
const __m128i r0 = _mm_add_epi16(q0, q3);
const __m128i r1 = _mm_add_epi16(q1, q2);
const __m128i r2 = _mm_sub_epi16(q1, q2);
const __m128i r3 = _mm_sub_epi16(q0, q3);
// Interleave to do the multiply by constants which gets us into 32bits
const __m128i t0 = _mm_unpacklo_epi16(r0, r1);
const __m128i t1 = _mm_unpackhi_epi16(r0, r1);
const __m128i t2 = _mm_unpacklo_epi16(r2, r3);
const __m128i t3 = _mm_unpackhi_epi16(r2, r3);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16);
const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16);
const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16);
const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08);
const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08);
const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24);
const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
// Combine
res0 = _mm_packs_epi32(w0, w1);
res4 = _mm_packs_epi32(w2, w3);
res2 = _mm_packs_epi32(w4, w5);
res6 = _mm_packs_epi32(w6, w7);
}
// Work on next four results
{
// Interleave to do the multiply by constants which gets us into 32bits
const __m128i d0 = _mm_unpacklo_epi16(q6, q5);
const __m128i d1 = _mm_unpackhi_epi16(q6, q5);
const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16);
const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16);
const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16);
const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16);
// dct_const_round_shift
const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING);
const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING);
const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING);
const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING);
const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS);
const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS);
const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS);
const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS);
// Combine
const __m128i r0 = _mm_packs_epi32(s0, s1);
const __m128i r1 = _mm_packs_epi32(s2, s3);
// Add/substract
const __m128i x0 = _mm_add_epi16(q4, r0);
const __m128i x1 = _mm_sub_epi16(q4, r0);
const __m128i x2 = _mm_sub_epi16(q7, r1);
const __m128i x3 = _mm_add_epi16(q7, r1);
// Interleave to do the multiply by constants which gets us into 32bits
const __m128i t0 = _mm_unpacklo_epi16(x0, x3);
const __m128i t1 = _mm_unpackhi_epi16(x0, x3);
const __m128i t2 = _mm_unpacklo_epi16(x1, x2);
const __m128i t3 = _mm_unpackhi_epi16(x1, x2);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04);
const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28);
const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28);
const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20);
const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20);
const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12);
const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
// Combine
res1 = _mm_packs_epi32(w0, w1);
res7 = _mm_packs_epi32(w2, w3);
res5 = _mm_packs_epi32(w4, w5);
res3 = _mm_packs_epi32(w6, w7);
}
// Transpose the 8x8.
{
// 00 01 02 03 04 05 06 07
// 10 11 12 13 14 15 16 17
// 20 21 22 23 24 25 26 27
// 30 31 32 33 34 35 36 37
// 40 41 42 43 44 45 46 47
// 50 51 52 53 54 55 56 57
// 60 61 62 63 64 65 66 67
// 70 71 72 73 74 75 76 77
const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1);
const __m128i tr0_1 = _mm_unpacklo_epi16(res2, res3);
const __m128i tr0_2 = _mm_unpackhi_epi16(res0, res1);
const __m128i tr0_3 = _mm_unpackhi_epi16(res2, res3);
const __m128i tr0_4 = _mm_unpacklo_epi16(res4, res5);
const __m128i tr0_5 = _mm_unpacklo_epi16(res6, res7);
const __m128i tr0_6 = _mm_unpackhi_epi16(res4, res5);
const __m128i tr0_7 = _mm_unpackhi_epi16(res6, res7);
// 00 10 01 11 02 12 03 13
// 20 30 21 31 22 32 23 33
// 04 14 05 15 06 16 07 17
// 24 34 25 35 26 36 27 37
// 40 50 41 51 42 52 43 53
// 60 70 61 71 62 72 63 73
// 54 54 55 55 56 56 57 57
// 64 74 65 75 66 76 67 77
const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1);
const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3);
const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1);
const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3);
const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5);
const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7);
const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5);
const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7);
// 00 10 20 30 01 11 21 31
// 40 50 60 70 41 51 61 71
// 02 12 22 32 03 13 23 33
// 42 52 62 72 43 53 63 73
// 04 14 24 34 05 15 21 36
// 44 54 64 74 45 55 61 76
// 06 16 26 36 07 17 27 37
// 46 56 66 76 47 57 67 77
in0 = _mm_unpacklo_epi64(tr1_0, tr1_4);
in1 = _mm_unpackhi_epi64(tr1_0, tr1_4);
in2 = _mm_unpacklo_epi64(tr1_2, tr1_6);
in3 = _mm_unpackhi_epi64(tr1_2, tr1_6);
in4 = _mm_unpacklo_epi64(tr1_1, tr1_5);
in5 = _mm_unpackhi_epi64(tr1_1, tr1_5);
in6 = _mm_unpacklo_epi64(tr1_3, tr1_7);
in7 = _mm_unpackhi_epi64(tr1_3, tr1_7);
// 00 10 20 30 40 50 60 70
// 01 11 21 31 41 51 61 71
// 02 12 22 32 42 52 62 72
// 03 13 23 33 43 53 63 73
// 04 14 24 34 44 54 64 74
// 05 15 25 35 45 55 65 75
// 06 16 26 36 46 56 66 76
// 07 17 27 37 47 57 67 77
}
}
// Post-condition output and store it
{
// Post-condition (division by two)
// division of two 16 bits signed numbers using shifts
// n / 2 = (n - (n >> 15)) >> 1
const __m128i sign_in0 = _mm_srai_epi16(in0, 15);
const __m128i sign_in1 = _mm_srai_epi16(in1, 15);
const __m128i sign_in2 = _mm_srai_epi16(in2, 15);
const __m128i sign_in3 = _mm_srai_epi16(in3, 15);
const __m128i sign_in4 = _mm_srai_epi16(in4, 15);
const __m128i sign_in5 = _mm_srai_epi16(in5, 15);
const __m128i sign_in6 = _mm_srai_epi16(in6, 15);
const __m128i sign_in7 = _mm_srai_epi16(in7, 15);
in0 = _mm_sub_epi16(in0, sign_in0);
in1 = _mm_sub_epi16(in1, sign_in1);
in2 = _mm_sub_epi16(in2, sign_in2);
in3 = _mm_sub_epi16(in3, sign_in3);
in4 = _mm_sub_epi16(in4, sign_in4);
in5 = _mm_sub_epi16(in5, sign_in5);
in6 = _mm_sub_epi16(in6, sign_in6);
in7 = _mm_sub_epi16(in7, sign_in7);
in0 = _mm_srai_epi16(in0, 1);
in1 = _mm_srai_epi16(in1, 1);
in2 = _mm_srai_epi16(in2, 1);
in3 = _mm_srai_epi16(in3, 1);
in4 = _mm_srai_epi16(in4, 1);
in5 = _mm_srai_epi16(in5, 1);
in6 = _mm_srai_epi16(in6, 1);
in7 = _mm_srai_epi16(in7, 1);
// store results
_mm_store_si128((__m128i *)(output + 0 * 8), in0);
_mm_store_si128((__m128i *)(output + 1 * 8), in1);
_mm_store_si128((__m128i *)(output + 2 * 8), in2);
_mm_store_si128((__m128i *)(output + 3 * 8), in3);
_mm_store_si128((__m128i *)(output + 4 * 8), in4);
_mm_store_si128((__m128i *)(output + 5 * 8), in5);
_mm_store_si128((__m128i *)(output + 6 * 8), in6);
_mm_store_si128((__m128i *)(output + 7 * 8), in7);
}
}
// load 8x8 array
static INLINE void load_buffer_8x8(int16_t *input, __m128i *in, int stride) {
in[0] = _mm_load_si128((__m128i *)(input + 0 * stride));
in[1] = _mm_load_si128((__m128i *)(input + 1 * stride));
in[2] = _mm_load_si128((__m128i *)(input + 2 * stride));
in[3] = _mm_load_si128((__m128i *)(input + 3 * stride));
in[4] = _mm_load_si128((__m128i *)(input + 4 * stride));
in[5] = _mm_load_si128((__m128i *)(input + 5 * stride));
in[6] = _mm_load_si128((__m128i *)(input + 6 * stride));
in[7] = _mm_load_si128((__m128i *)(input + 7 * stride));
in[0] = _mm_slli_epi16(in[0], 2);
in[1] = _mm_slli_epi16(in[1], 2);
in[2] = _mm_slli_epi16(in[2], 2);
in[3] = _mm_slli_epi16(in[3], 2);
in[4] = _mm_slli_epi16(in[4], 2);
in[5] = _mm_slli_epi16(in[5], 2);
in[6] = _mm_slli_epi16(in[6], 2);
in[7] = _mm_slli_epi16(in[7], 2);
}
// right shift and rounding
static INLINE void right_shift_8x8(__m128i *res, int const bit) {
const __m128i kOne = _mm_set1_epi16(1);
const int bit_m02 = bit - 2;
__m128i sign0 = _mm_srai_epi16(res[0], 15);
__m128i sign1 = _mm_srai_epi16(res[1], 15);
__m128i sign2 = _mm_srai_epi16(res[2], 15);
__m128i sign3 = _mm_srai_epi16(res[3], 15);
__m128i sign4 = _mm_srai_epi16(res[4], 15);
__m128i sign5 = _mm_srai_epi16(res[5], 15);
__m128i sign6 = _mm_srai_epi16(res[6], 15);
__m128i sign7 = _mm_srai_epi16(res[7], 15);
if (bit_m02 >= 0) {
__m128i k_const_rounding = _mm_slli_epi16(kOne, bit_m02);
res[0] = _mm_add_epi16(res[0], k_const_rounding);
res[1] = _mm_add_epi16(res[1], k_const_rounding);
res[2] = _mm_add_epi16(res[2], k_const_rounding);
res[3] = _mm_add_epi16(res[3], k_const_rounding);
res[4] = _mm_add_epi16(res[4], k_const_rounding);
res[5] = _mm_add_epi16(res[5], k_const_rounding);
res[6] = _mm_add_epi16(res[6], k_const_rounding);
res[7] = _mm_add_epi16(res[7], k_const_rounding);
}
res[0] = _mm_sub_epi16(res[0], sign0);
res[1] = _mm_sub_epi16(res[1], sign1);
res[2] = _mm_sub_epi16(res[2], sign2);
res[3] = _mm_sub_epi16(res[3], sign3);
res[4] = _mm_sub_epi16(res[4], sign4);
res[5] = _mm_sub_epi16(res[5], sign5);
res[6] = _mm_sub_epi16(res[6], sign6);
res[7] = _mm_sub_epi16(res[7], sign7);
res[0] = _mm_srai_epi16(res[0], bit);
res[1] = _mm_srai_epi16(res[1], bit);
res[2] = _mm_srai_epi16(res[2], bit);
res[3] = _mm_srai_epi16(res[3], bit);
res[4] = _mm_srai_epi16(res[4], bit);
res[5] = _mm_srai_epi16(res[5], bit);
res[6] = _mm_srai_epi16(res[6], bit);
res[7] = _mm_srai_epi16(res[7], bit);
}
// write 8x8 array
static INLINE void write_buffer_8x8(int16_t *output, __m128i *res, int stride) {
_mm_store_si128((__m128i *)(output + 0 * stride), res[0]);
_mm_store_si128((__m128i *)(output + 1 * stride), res[1]);
_mm_store_si128((__m128i *)(output + 2 * stride), res[2]);
_mm_store_si128((__m128i *)(output + 3 * stride), res[3]);
_mm_store_si128((__m128i *)(output + 4 * stride), res[4]);
_mm_store_si128((__m128i *)(output + 5 * stride), res[5]);
_mm_store_si128((__m128i *)(output + 6 * stride), res[6]);
_mm_store_si128((__m128i *)(output + 7 * stride), res[7]);
}
// perform in-place transpose
static INLINE void array_transpose_8x8(__m128i *in, __m128i *res) {
const __m128i tr0_0 = _mm_unpacklo_epi16(in[0], in[1]);
const __m128i tr0_1 = _mm_unpacklo_epi16(in[2], in[3]);
const __m128i tr0_2 = _mm_unpackhi_epi16(in[0], in[1]);
const __m128i tr0_3 = _mm_unpackhi_epi16(in[2], in[3]);
const __m128i tr0_4 = _mm_unpacklo_epi16(in[4], in[5]);
const __m128i tr0_5 = _mm_unpacklo_epi16(in[6], in[7]);
const __m128i tr0_6 = _mm_unpackhi_epi16(in[4], in[5]);
const __m128i tr0_7 = _mm_unpackhi_epi16(in[6], in[7]);
// 00 10 01 11 02 12 03 13
// 20 30 21 31 22 32 23 33
// 04 14 05 15 06 16 07 17
// 24 34 25 35 26 36 27 37
// 40 50 41 51 42 52 43 53
// 60 70 61 71 62 72 63 73
// 44 54 45 55 46 56 47 57
// 64 74 65 75 66 76 67 77
const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1);
const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_4, tr0_5);
const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1);
const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_4, tr0_5);
const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_2, tr0_3);
const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7);
const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_2, tr0_3);
const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7);
// 00 10 20 30 01 11 21 31
// 40 50 60 70 41 51 61 71
// 02 12 22 32 03 13 23 33
// 42 52 62 72 43 53 63 73
// 04 14 24 34 05 15 25 35
// 44 54 64 74 45 55 65 75
// 06 16 26 36 07 17 27 37
// 46 56 66 76 47 57 67 77
res[0] = _mm_unpacklo_epi64(tr1_0, tr1_1);
res[1] = _mm_unpackhi_epi64(tr1_0, tr1_1);
res[2] = _mm_unpacklo_epi64(tr1_2, tr1_3);
res[3] = _mm_unpackhi_epi64(tr1_2, tr1_3);
res[4] = _mm_unpacklo_epi64(tr1_4, tr1_5);
res[5] = _mm_unpackhi_epi64(tr1_4, tr1_5);
res[6] = _mm_unpacklo_epi64(tr1_6, tr1_7);
res[7] = _mm_unpackhi_epi64(tr1_6, tr1_7);
// 00 10 20 30 40 50 60 70
// 01 11 21 31 41 51 61 71
// 02 12 22 32 42 52 62 72
// 03 13 23 33 43 53 63 73
// 04 14 24 34 44 54 64 74
// 05 15 25 35 45 55 65 75
// 06 16 26 36 46 56 66 76
// 07 17 27 37 47 57 67 77
}
void fdct8_1d_sse2(__m128i *in) {
// constants
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_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64);
const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
__m128i u0, u1, u2, u3, u4, u5, u6, u7;
__m128i v0, v1, v2, v3, v4, v5, v6, v7;
__m128i s0, s1, s2, s3, s4, s5, s6, s7;
// stage 1
s0 = _mm_add_epi16(in[0], in[7]);
s1 = _mm_add_epi16(in[1], in[6]);
s2 = _mm_add_epi16(in[2], in[5]);
s3 = _mm_add_epi16(in[3], in[4]);
s4 = _mm_sub_epi16(in[3], in[4]);
s5 = _mm_sub_epi16(in[2], in[5]);
s6 = _mm_sub_epi16(in[1], in[6]);
s7 = _mm_sub_epi16(in[0], in[7]);
u0 = _mm_add_epi16(s0, s3);
u1 = _mm_add_epi16(s1, s2);
u2 = _mm_sub_epi16(s1, s2);
u3 = _mm_sub_epi16(s0, s3);
// interleave and perform butterfly multiplication/addition
v0 = _mm_unpacklo_epi16(u0, u1);
v1 = _mm_unpackhi_epi16(u0, u1);
v2 = _mm_unpacklo_epi16(u2, u3);
v3 = _mm_unpackhi_epi16(u2, u3);
u0 = _mm_madd_epi16(v0, k__cospi_p16_p16);
u1 = _mm_madd_epi16(v1, k__cospi_p16_p16);
u2 = _mm_madd_epi16(v0, k__cospi_p16_m16);
u3 = _mm_madd_epi16(v1, k__cospi_p16_m16);
u4 = _mm_madd_epi16(v2, k__cospi_p24_p08);
u5 = _mm_madd_epi16(v3, k__cospi_p24_p08);
u6 = _mm_madd_epi16(v2, k__cospi_m08_p24);
u7 = _mm_madd_epi16(v3, k__cospi_m08_p24);
// shift and rounding
v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
v7 = _mm_add_epi32(u7, 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);
in[0] = _mm_packs_epi32(u0, u1);
in[2] = _mm_packs_epi32(u4, u5);
in[4] = _mm_packs_epi32(u2, u3);
in[6] = _mm_packs_epi32(u6, u7);
// stage 2
// interleave and perform butterfly multiplication/addition
u0 = _mm_unpacklo_epi16(s6, s5);
u1 = _mm_unpackhi_epi16(s6, s5);
v0 = _mm_madd_epi16(u0, k__cospi_p16_m16);
v1 = _mm_madd_epi16(u1, k__cospi_p16_m16);
v2 = _mm_madd_epi16(u0, k__cospi_p16_p16);
v3 = _mm_madd_epi16(u1, k__cospi_p16_p16);
// shift and rounding
u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING);
u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING);
u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING);
u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING);
v0 = _mm_srai_epi32(u0, DCT_CONST_BITS);
v1 = _mm_srai_epi32(u1, DCT_CONST_BITS);
v2 = _mm_srai_epi32(u2, DCT_CONST_BITS);
v3 = _mm_srai_epi32(u3, DCT_CONST_BITS);
u0 = _mm_packs_epi32(v0, v1);
u1 = _mm_packs_epi32(v2, v3);
// stage 3
s0 = _mm_add_epi16(s4, u0);
s1 = _mm_sub_epi16(s4, u0);
s2 = _mm_sub_epi16(s7, u1);
s3 = _mm_add_epi16(s7, u1);
// stage 4
u0 = _mm_unpacklo_epi16(s0, s3);
u1 = _mm_unpackhi_epi16(s0, s3);
u2 = _mm_unpacklo_epi16(s1, s2);
u3 = _mm_unpackhi_epi16(s1, s2);
v0 = _mm_madd_epi16(u0, k__cospi_p28_p04);
v1 = _mm_madd_epi16(u1, k__cospi_p28_p04);
v2 = _mm_madd_epi16(u2, k__cospi_p12_p20);
v3 = _mm_madd_epi16(u3, k__cospi_p12_p20);
v4 = _mm_madd_epi16(u2, k__cospi_m20_p12);
v5 = _mm_madd_epi16(u3, k__cospi_m20_p12);
v6 = _mm_madd_epi16(u0, k__cospi_m04_p28);
v7 = _mm_madd_epi16(u1, k__cospi_m04_p28);
// shift and rounding
u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING);
u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING);
u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING);
u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING);
u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING);
u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING);
u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING);
u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING);
v0 = _mm_srai_epi32(u0, DCT_CONST_BITS);
v1 = _mm_srai_epi32(u1, DCT_CONST_BITS);
v2 = _mm_srai_epi32(u2, DCT_CONST_BITS);
v3 = _mm_srai_epi32(u3, DCT_CONST_BITS);
v4 = _mm_srai_epi32(u4, DCT_CONST_BITS);
v5 = _mm_srai_epi32(u5, DCT_CONST_BITS);
v6 = _mm_srai_epi32(u6, DCT_CONST_BITS);
v7 = _mm_srai_epi32(u7, DCT_CONST_BITS);
in[1] = _mm_packs_epi32(v0, v1);
in[3] = _mm_packs_epi32(v4, v5);
in[5] = _mm_packs_epi32(v2, v3);
in[7] = _mm_packs_epi32(v6, v7);
// transpose
array_transpose_8x8(in, in);
}
void fadst8_1d_sse2(__m128i *in) {
// Constants
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 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;
// 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);
v0 = _mm_madd_epi16(u0, k__cospi_p16_p16);
v1 = _mm_madd_epi16(u1, k__cospi_p16_p16);
v2 = _mm_madd_epi16(u0, k__cospi_p16_m16);
v3 = _mm_madd_epi16(u1, k__cospi_p16_m16);
v4 = _mm_madd_epi16(u2, k__cospi_p16_p16);
v5 = _mm_madd_epi16(u3, k__cospi_p16_p16);
v6 = _mm_madd_epi16(u2, k__cospi_p16_m16);
v7 = _mm_madd_epi16(u3, k__cospi_p16_m16);
u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING);
u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING);
u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING);
u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING);
u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING);
u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING);
u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING);
u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING);
v0 = _mm_srai_epi32(u0, DCT_CONST_BITS);
v1 = _mm_srai_epi32(u1, DCT_CONST_BITS);
v2 = _mm_srai_epi32(u2, DCT_CONST_BITS);
v3 = _mm_srai_epi32(u3, DCT_CONST_BITS);
v4 = _mm_srai_epi32(u4, DCT_CONST_BITS);
v5 = _mm_srai_epi32(u5, DCT_CONST_BITS);
v6 = _mm_srai_epi32(u6, DCT_CONST_BITS);
v7 = _mm_srai_epi32(u7, DCT_CONST_BITS);
s2 = _mm_packs_epi32(v0, v1);
s3 = _mm_packs_epi32(v2, v3);
s6 = _mm_packs_epi32(v4, v5);
s7 = _mm_packs_epi32(v6, v7);
// FIXME(jingning): do subtract using bit inversion?
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);
// transpose
array_transpose_8x8(in, in);
}
void vp9_short_fht8x8_sse2(int16_t *input, int16_t *output,
int stride, int tx_type) {
__m128i in[8];
load_buffer_8x8(input, in, stride);
switch (tx_type) {
case 0: // DCT_DCT
fdct8_1d_sse2(in);
fdct8_1d_sse2(in);
break;
case 1: // ADST_DCT
fadst8_1d_sse2(in);
fdct8_1d_sse2(in);
break;
case 2: // DCT_ADST
fdct8_1d_sse2(in);
fadst8_1d_sse2(in);
break;
case 3: // ADST_ADST
fadst8_1d_sse2(in);
fadst8_1d_sse2(in);
break;
default:
assert(0);
break;
}
right_shift_8x8(in, 1);
write_buffer_8x8(output, in, 8);
}
void vp9_short_fdct16x16_sse2(int16_t *input, int16_t *output, int pitch) {
// The 2D transform is done with two passes which are actually pretty
// similar. In the first one, we transform the columns and transpose
// the results. In the second one, we transform the rows. To achieve that,
// as the first pass results are transposed, we tranpose the columns (that
// is the transposed rows) and transpose the results (so that it goes back
// in normal/row positions).
const int stride = pitch >> 1;
int pass;
// We need an intermediate buffer between passes.
DECLARE_ALIGNED_ARRAY(16, int16_t, intermediate, 256);
int16_t *in = input;
int16_t *out = intermediate;
// Constants
// When we use them, in one case, they are all the same. In all others
// it's a pair of them that we need to repeat four times. This is done
// by constructing the 32 bit constant corresponding to that pair.
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_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64);
const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64);
const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64);
const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64);
const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64);
const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64);
const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64);
const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64);
const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
const __m128i kOne = _mm_set1_epi16(1);
// Do the two transform/transpose passes
for (pass = 0; pass < 2; ++pass) {
// We process eight columns (transposed rows in second pass) at a time.
int column_start;
for (column_start = 0; column_start < 16; column_start += 8) {
__m128i in00, in01, in02, in03, in04, in05, in06, in07;
__m128i in08, in09, in10, in11, in12, in13, in14, in15;
__m128i input0, input1, input2, input3, input4, input5, input6, input7;
__m128i step1_0, step1_1, step1_2, step1_3;
__m128i step1_4, step1_5, step1_6, step1_7;
__m128i step2_1, step2_2, step2_3, step2_4, step2_5, step2_6;
__m128i step3_0, step3_1, step3_2, step3_3;
__m128i step3_4, step3_5, step3_6, step3_7;
__m128i res00, res01, res02, res03, res04, res05, res06, res07;
__m128i res08, res09, res10, res11, res12, res13, res14, res15;
// Load and pre-condition input.
if (0 == pass) {
in00 = _mm_load_si128((const __m128i *)(in + 0 * stride));
in01 = _mm_load_si128((const __m128i *)(in + 1 * stride));
in02 = _mm_load_si128((const __m128i *)(in + 2 * stride));
in03 = _mm_load_si128((const __m128i *)(in + 3 * stride));
in04 = _mm_load_si128((const __m128i *)(in + 4 * stride));
in05 = _mm_load_si128((const __m128i *)(in + 5 * stride));
in06 = _mm_load_si128((const __m128i *)(in + 6 * stride));
in07 = _mm_load_si128((const __m128i *)(in + 7 * stride));
in08 = _mm_load_si128((const __m128i *)(in + 8 * stride));
in09 = _mm_load_si128((const __m128i *)(in + 9 * stride));
in10 = _mm_load_si128((const __m128i *)(in + 10 * stride));
in11 = _mm_load_si128((const __m128i *)(in + 11 * stride));
in12 = _mm_load_si128((const __m128i *)(in + 12 * stride));
in13 = _mm_load_si128((const __m128i *)(in + 13 * stride));
in14 = _mm_load_si128((const __m128i *)(in + 14 * stride));
in15 = _mm_load_si128((const __m128i *)(in + 15 * stride));
// x = x << 2
in00 = _mm_slli_epi16(in00, 2);
in01 = _mm_slli_epi16(in01, 2);
in02 = _mm_slli_epi16(in02, 2);
in03 = _mm_slli_epi16(in03, 2);
in04 = _mm_slli_epi16(in04, 2);
in05 = _mm_slli_epi16(in05, 2);
in06 = _mm_slli_epi16(in06, 2);
in07 = _mm_slli_epi16(in07, 2);
in08 = _mm_slli_epi16(in08, 2);
in09 = _mm_slli_epi16(in09, 2);
in10 = _mm_slli_epi16(in10, 2);
in11 = _mm_slli_epi16(in11, 2);
in12 = _mm_slli_epi16(in12, 2);
in13 = _mm_slli_epi16(in13, 2);
in14 = _mm_slli_epi16(in14, 2);
in15 = _mm_slli_epi16(in15, 2);
} else {
in00 = _mm_load_si128((const __m128i *)(in + 0 * 16));
in01 = _mm_load_si128((const __m128i *)(in + 1 * 16));
in02 = _mm_load_si128((const __m128i *)(in + 2 * 16));
in03 = _mm_load_si128((const __m128i *)(in + 3 * 16));
in04 = _mm_load_si128((const __m128i *)(in + 4 * 16));
in05 = _mm_load_si128((const __m128i *)(in + 5 * 16));
in06 = _mm_load_si128((const __m128i *)(in + 6 * 16));
in07 = _mm_load_si128((const __m128i *)(in + 7 * 16));
in08 = _mm_load_si128((const __m128i *)(in + 8 * 16));
in09 = _mm_load_si128((const __m128i *)(in + 9 * 16));
in10 = _mm_load_si128((const __m128i *)(in + 10 * 16));
in11 = _mm_load_si128((const __m128i *)(in + 11 * 16));
in12 = _mm_load_si128((const __m128i *)(in + 12 * 16));
in13 = _mm_load_si128((const __m128i *)(in + 13 * 16));
in14 = _mm_load_si128((const __m128i *)(in + 14 * 16));
in15 = _mm_load_si128((const __m128i *)(in + 15 * 16));
// x = (x + 1) >> 2
in00 = _mm_add_epi16(in00, kOne);
in01 = _mm_add_epi16(in01, kOne);
in02 = _mm_add_epi16(in02, kOne);
in03 = _mm_add_epi16(in03, kOne);
in04 = _mm_add_epi16(in04, kOne);
in05 = _mm_add_epi16(in05, kOne);
in06 = _mm_add_epi16(in06, kOne);
in07 = _mm_add_epi16(in07, kOne);
in08 = _mm_add_epi16(in08, kOne);
in09 = _mm_add_epi16(in09, kOne);
in10 = _mm_add_epi16(in10, kOne);
in11 = _mm_add_epi16(in11, kOne);
in12 = _mm_add_epi16(in12, kOne);
in13 = _mm_add_epi16(in13, kOne);
in14 = _mm_add_epi16(in14, kOne);
in15 = _mm_add_epi16(in15, kOne);
in00 = _mm_srai_epi16(in00, 2);
in01 = _mm_srai_epi16(in01, 2);
in02 = _mm_srai_epi16(in02, 2);
in03 = _mm_srai_epi16(in03, 2);
in04 = _mm_srai_epi16(in04, 2);
in05 = _mm_srai_epi16(in05, 2);
in06 = _mm_srai_epi16(in06, 2);
in07 = _mm_srai_epi16(in07, 2);
in08 = _mm_srai_epi16(in08, 2);
in09 = _mm_srai_epi16(in09, 2);
in10 = _mm_srai_epi16(in10, 2);
in11 = _mm_srai_epi16(in11, 2);
in12 = _mm_srai_epi16(in12, 2);
in13 = _mm_srai_epi16(in13, 2);
in14 = _mm_srai_epi16(in14, 2);
in15 = _mm_srai_epi16(in15, 2);
}
in += 8;
// Calculate input for the first 8 results.
{
input0 = _mm_add_epi16(in00, in15);
input1 = _mm_add_epi16(in01, in14);
input2 = _mm_add_epi16(in02, in13);
input3 = _mm_add_epi16(in03, in12);
input4 = _mm_add_epi16(in04, in11);
input5 = _mm_add_epi16(in05, in10);
input6 = _mm_add_epi16(in06, in09);
input7 = _mm_add_epi16(in07, in08);
}
// Calculate input for the next 8 results.
{
step1_0 = _mm_sub_epi16(in07, in08);
step1_1 = _mm_sub_epi16(in06, in09);
step1_2 = _mm_sub_epi16(in05, in10);
step1_3 = _mm_sub_epi16(in04, in11);
step1_4 = _mm_sub_epi16(in03, in12);
step1_5 = _mm_sub_epi16(in02, in13);
step1_6 = _mm_sub_epi16(in01, in14);
step1_7 = _mm_sub_epi16(in00, in15);
}
// Work on the first eight values; fdct8_1d(input, even_results);
{
// Add/substract
const __m128i q0 = _mm_add_epi16(input0, input7);
const __m128i q1 = _mm_add_epi16(input1, input6);
const __m128i q2 = _mm_add_epi16(input2, input5);
const __m128i q3 = _mm_add_epi16(input3, input4);
const __m128i q4 = _mm_sub_epi16(input3, input4);
const __m128i q5 = _mm_sub_epi16(input2, input5);
const __m128i q6 = _mm_sub_epi16(input1, input6);
const __m128i q7 = _mm_sub_epi16(input0, input7);
// Work on first four results
{
// Add/substract
const __m128i r0 = _mm_add_epi16(q0, q3);
const __m128i r1 = _mm_add_epi16(q1, q2);
const __m128i r2 = _mm_sub_epi16(q1, q2);
const __m128i r3 = _mm_sub_epi16(q0, q3);
// Interleave to do the multiply by constants which gets us
// into 32 bits.
const __m128i t0 = _mm_unpacklo_epi16(r0, r1);
const __m128i t1 = _mm_unpackhi_epi16(r0, r1);
const __m128i t2 = _mm_unpacklo_epi16(r2, r3);
const __m128i t3 = _mm_unpackhi_epi16(r2, r3);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16);
const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16);
const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16);
const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08);
const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08);
const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24);
const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
// Combine
res00 = _mm_packs_epi32(w0, w1);
res08 = _mm_packs_epi32(w2, w3);
res04 = _mm_packs_epi32(w4, w5);
res12 = _mm_packs_epi32(w6, w7);
}
// Work on next four results
{
// Interleave to do the multiply by constants which gets us
// into 32 bits.
const __m128i d0 = _mm_unpacklo_epi16(q6, q5);
const __m128i d1 = _mm_unpackhi_epi16(q6, q5);
const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16);
const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16);
const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16);
const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16);
// dct_const_round_shift
const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING);
const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING);
const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING);
const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING);
const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS);
const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS);
const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS);
const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS);
// Combine
const __m128i r0 = _mm_packs_epi32(s0, s1);
const __m128i r1 = _mm_packs_epi32(s2, s3);
// Add/substract
const __m128i x0 = _mm_add_epi16(q4, r0);
const __m128i x1 = _mm_sub_epi16(q4, r0);
const __m128i x2 = _mm_sub_epi16(q7, r1);
const __m128i x3 = _mm_add_epi16(q7, r1);
// Interleave to do the multiply by constants which gets us
// into 32 bits.
const __m128i t0 = _mm_unpacklo_epi16(x0, x3);
const __m128i t1 = _mm_unpackhi_epi16(x0, x3);
const __m128i t2 = _mm_unpacklo_epi16(x1, x2);
const __m128i t3 = _mm_unpackhi_epi16(x1, x2);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04);
const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28);
const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28);
const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20);
const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20);
const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12);
const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
// Combine
res02 = _mm_packs_epi32(w0, w1);
res14 = _mm_packs_epi32(w2, w3);
res10 = _mm_packs_epi32(w4, w5);
res06 = _mm_packs_epi32(w6, w7);
}
}
// Work on the next eight values; step1 -> odd_results
{
// step 2
{
const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2);
const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2);
const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3);
const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_m16);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_m16);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p16_m16);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p16_m16);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
step2_2 = _mm_packs_epi32(w0, w1);
step2_3 = _mm_packs_epi32(w2, w3);
}
{
const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2);
const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2);
const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3);
const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p16_p16);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p16_p16);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
step2_5 = _mm_packs_epi32(w0, w1);
step2_4 = _mm_packs_epi32(w2, w3);
}
// step 3
{
step3_0 = _mm_add_epi16(step1_0, step2_3);
step3_1 = _mm_add_epi16(step1_1, step2_2);
step3_2 = _mm_sub_epi16(step1_1, step2_2);
step3_3 = _mm_sub_epi16(step1_0, step2_3);
step3_4 = _mm_sub_epi16(step1_7, step2_4);
step3_5 = _mm_sub_epi16(step1_6, step2_5);
step3_6 = _mm_add_epi16(step1_6, step2_5);
step3_7 = _mm_add_epi16(step1_7, step2_4);
}
// step 4
{
const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6);
const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6);
const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5);
const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m08_p24);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m08_p24);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m24_m08);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m24_m08);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
step2_1 = _mm_packs_epi32(w0, w1);
step2_2 = _mm_packs_epi32(w2, w3);
}
{
const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6);
const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6);
const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5);
const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p24_p08);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p24_p08);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m08_p24);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m08_p24);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
step2_6 = _mm_packs_epi32(w0, w1);
step2_5 = _mm_packs_epi32(w2, w3);
}
// step 5
{
step1_0 = _mm_add_epi16(step3_0, step2_1);
step1_1 = _mm_sub_epi16(step3_0, step2_1);
step1_2 = _mm_sub_epi16(step3_3, step2_2);
step1_3 = _mm_add_epi16(step3_3, step2_2);
step1_4 = _mm_add_epi16(step3_4, step2_5);
step1_5 = _mm_sub_epi16(step3_4, step2_5);
step1_6 = _mm_sub_epi16(step3_7, step2_6);
step1_7 = _mm_add_epi16(step3_7, step2_6);
}
// step 6
{
const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7);
const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7);
const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6);
const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p30_p02);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p30_p02);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p14_p18);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p14_p18);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
res01 = _mm_packs_epi32(w0, w1);
res09 = _mm_packs_epi32(w2, w3);
}
{
const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5);
const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5);
const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4);
const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p22_p10);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p22_p10);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p06_p26);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p06_p26);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
res05 = _mm_packs_epi32(w0, w1);
res13 = _mm_packs_epi32(w2, w3);
}
{
const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5);
const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5);
const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4);
const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m10_p22);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m10_p22);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m26_p06);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m26_p06);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
res11 = _mm_packs_epi32(w0, w1);
res03 = _mm_packs_epi32(w2, w3);
}
{
const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7);
const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7);
const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6);
const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6);
const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m02_p30);
const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m02_p30);
const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m18_p14);
const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m18_p14);
// dct_const_round_shift
const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
// Combine
res15 = _mm_packs_epi32(w0, w1);
res07 = _mm_packs_epi32(w2, w3);
}
}
// Transpose the results, do it as two 8x8 transposes.
{
// 00 01 02 03 04 05 06 07
// 10 11 12 13 14 15 16 17
// 20 21 22 23 24 25 26 27
// 30 31 32 33 34 35 36 37
// 40 41 42 43 44 45 46 47
// 50 51 52 53 54 55 56 57
// 60 61 62 63 64 65 66 67
// 70 71 72 73 74 75 76 77
const __m128i tr0_0 = _mm_unpacklo_epi16(res00, res01);
const __m128i tr0_1 = _mm_unpacklo_epi16(res02, res03);
const __m128i tr0_2 = _mm_unpackhi_epi16(res00, res01);
const __m128i tr0_3 = _mm_unpackhi_epi16(res02, res03);
const __m128i tr0_4 = _mm_unpacklo_epi16(res04, res05);
const __m128i tr0_5 = _mm_unpacklo_epi16(res06, res07);
const __m128i tr0_6 = _mm_unpackhi_epi16(res04, res05);
const __m128i tr0_7 = _mm_unpackhi_epi16(res06, res07);
// 00 10 01 11 02 12 03 13
// 20 30 21 31 22 32 23 33
// 04 14 05 15 06 16 07 17
// 24 34 25 35 26 36 27 37
// 40 50 41 51 42 52 43 53
// 60 70 61 71 62 72 63 73
// 54 54 55 55 56 56 57 57
// 64 74 65 75 66 76 67 77
const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1);
const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3);
const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1);
const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3);
const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5);
const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7);
const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5);
const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7);
// 00 10 20 30 01 11 21 31
// 40 50 60 70 41 51 61 71
// 02 12 22 32 03 13 23 33
// 42 52 62 72 43 53 63 73
// 04 14 24 34 05 15 21 36
// 44 54 64 74 45 55 61 76
// 06 16 26 36 07 17 27 37
// 46 56 66 76 47 57 67 77
const __m128i tr2_0 = _mm_unpacklo_epi64(tr1_0, tr1_4);
const __m128i tr2_1 = _mm_unpackhi_epi64(tr1_0, tr1_4);
const __m128i tr2_2 = _mm_unpacklo_epi64(tr1_2, tr1_6);
const __m128i tr2_3 = _mm_unpackhi_epi64(tr1_2, tr1_6);
const __m128i tr2_4 = _mm_unpacklo_epi64(tr1_1, tr1_5);
const __m128i tr2_5 = _mm_unpackhi_epi64(tr1_1, tr1_5);
const __m128i tr2_6 = _mm_unpacklo_epi64(tr1_3, tr1_7);
const __m128i tr2_7 = _mm_unpackhi_epi64(tr1_3, tr1_7);
// 00 10 20 30 40 50 60 70
// 01 11 21 31 41 51 61 71
// 02 12 22 32 42 52 62 72
// 03 13 23 33 43 53 63 73
// 04 14 24 34 44 54 64 74
// 05 15 25 35 45 55 65 75
// 06 16 26 36 46 56 66 76
// 07 17 27 37 47 57 67 77
_mm_storeu_si128((__m128i *)(out + 0 * 16), tr2_0);
_mm_storeu_si128((__m128i *)(out + 1 * 16), tr2_1);
_mm_storeu_si128((__m128i *)(out + 2 * 16), tr2_2);
_mm_storeu_si128((__m128i *)(out + 3 * 16), tr2_3);
_mm_storeu_si128((__m128i *)(out + 4 * 16), tr2_4);
_mm_storeu_si128((__m128i *)(out + 5 * 16), tr2_5);
_mm_storeu_si128((__m128i *)(out + 6 * 16), tr2_6);
_mm_storeu_si128((__m128i *)(out + 7 * 16), tr2_7);
}
{
// 00 01 02 03 04 05 06 07
// 10 11 12 13 14 15 16 17
// 20 21 22 23 24 25 26 27
// 30 31 32 33 34 35 36 37
// 40 41 42 43 44 45 46 47
// 50 51 52 53 54 55 56 57
// 60 61 62 63 64 65 66 67
// 70 71 72 73 74 75 76 77
const __m128i tr0_0 = _mm_unpacklo_epi16(res08, res09);
const __m128i tr0_1 = _mm_unpacklo_epi16(res10, res11);
const __m128i tr0_2 = _mm_unpackhi_epi16(res08, res09);
const __m128i tr0_3 = _mm_unpackhi_epi16(res10, res11);
const __m128i tr0_4 = _mm_unpacklo_epi16(res12, res13);
const __m128i tr0_5 = _mm_unpacklo_epi16(res14, res15);
const __m128i tr0_6 = _mm_unpackhi_epi16(res12, res13);
const __m128i tr0_7 = _mm_unpackhi_epi16(res14, res15);
// 00 10 01 11 02 12 03 13
// 20 30 21 31 22 32 23 33
// 04 14 05 15 06 16 07 17
// 24 34 25 35 26 36 27 37
// 40 50 41 51 42 52 43 53
// 60 70 61 71 62 72 63 73
// 54 54 55 55 56 56 57 57
// 64 74 65 75 66 76 67 77
const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1);
const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3);
const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1);
const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3);
const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5);
const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7);
const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5);
const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7);
// 00 10 20 30 01 11 21 31
// 40 50 60 70 41 51 61 71
// 02 12 22 32 03 13 23 33
// 42 52 62 72 43 53 63 73
// 04 14 24 34 05 15 21 36
// 44 54 64 74 45 55 61 76
// 06 16 26 36 07 17 27 37
// 46 56 66 76 47 57 67 77
const __m128i tr2_0 = _mm_unpacklo_epi64(tr1_0, tr1_4);
const __m128i tr2_1 = _mm_unpackhi_epi64(tr1_0, tr1_4);
const __m128i tr2_2 = _mm_unpacklo_epi64(tr1_2, tr1_6);
const __m128i tr2_3 = _mm_unpackhi_epi64(tr1_2, tr1_6);
const __m128i tr2_4 = _mm_unpacklo_epi64(tr1_1, tr1_5);
const __m128i tr2_5 = _mm_unpackhi_epi64(tr1_1, tr1_5);
const __m128i tr2_6 = _mm_unpacklo_epi64(tr1_3, tr1_7);
const __m128i tr2_7 = _mm_unpackhi_epi64(tr1_3, tr1_7);
// 00 10 20 30 40 50 60 70
// 01 11 21 31 41 51 61 71
// 02 12 22 32 42 52 62 72
// 03 13 23 33 43 53 63 73
// 04 14 24 34 44 54 64 74
// 05 15 25 35 45 55 65 75
// 06 16 26 36 46 56 66 76
// 07 17 27 37 47 57 67 77
// Store results
_mm_store_si128((__m128i *)(out + 8 + 0 * 16), tr2_0);
_mm_store_si128((__m128i *)(out + 8 + 1 * 16), tr2_1);
_mm_store_si128((__m128i *)(out + 8 + 2 * 16), tr2_2);
_mm_store_si128((__m128i *)(out + 8 + 3 * 16), tr2_3);
_mm_store_si128((__m128i *)(out + 8 + 4 * 16), tr2_4);
_mm_store_si128((__m128i *)(out + 8 + 5 * 16), tr2_5);
_mm_store_si128((__m128i *)(out + 8 + 6 * 16), tr2_6);
_mm_store_si128((__m128i *)(out + 8 + 7 * 16), tr2_7);
}
out += 8*16;
}
// Setup in/out for next pass.
in = intermediate;
out = output;
}
}
static INLINE void load_buffer_16x16(int16_t* input, __m128i *in0,
__m128i *in1, int stride) {
// load first 8 columns
load_buffer_8x8(input, in0, stride);
load_buffer_8x8(input + 8 * stride, in0 + 8, stride);
input += 8;
// load second 8 columns
load_buffer_8x8(input, in1, stride);
load_buffer_8x8(input + 8 * stride, in1 + 8, stride);
}
static INLINE void write_buffer_16x16(int16_t *output, __m128i *in0,
__m128i *in1, int stride) {
// write first 8 columns
write_buffer_8x8(output, in0, stride);
write_buffer_8x8(output + 8 * stride, in0 + 8, stride);
// write second 8 columns
output += 8;
write_buffer_8x8(output, in1, stride);
write_buffer_8x8(output + 8 * stride, in1 + 8, stride);
}
static INLINE void array_transpose_16x16(__m128i *res0, __m128i *res1) {
__m128i tbuf[8];
array_transpose_8x8(res0, res0);
array_transpose_8x8(res1, tbuf);
array_transpose_8x8(res0 + 8, res1);
array_transpose_8x8(res1 + 8, res1 + 8);
res0[8] = tbuf[0];
res0[9] = tbuf[1];
res0[10] = tbuf[2];
res0[11] = tbuf[3];
res0[12] = tbuf[4];
res0[13] = tbuf[5];
res0[14] = tbuf[6];
res0[15] = tbuf[7];
}
static INLINE void right_shift_16x16(__m128i *res0, __m128i *res1) {
// perform rounding operations
right_shift_8x8(res0, 2);
right_shift_8x8(res0 + 8, 2);
right_shift_8x8(res1, 2);
right_shift_8x8(res1 + 8, 2);
}
void fdct16_1d_8col(__m128i *in) {
// perform 16x16 1-D DCT for 8 columns
__m128i i[8], s[8], p[8], t[8], u[16], v[16];
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 k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64);
const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64);
const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64);
const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64);
const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64);
const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64);
const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64);
const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64);
const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
// stage 1
i[0] = _mm_add_epi16(in[0], in[15]);
i[1] = _mm_add_epi16(in[1], in[14]);
i[2] = _mm_add_epi16(in[2], in[13]);
i[3] = _mm_add_epi16(in[3], in[12]);
i[4] = _mm_add_epi16(in[4], in[11]);
i[5] = _mm_add_epi16(in[5], in[10]);
i[6] = _mm_add_epi16(in[6], in[9]);
i[7] = _mm_add_epi16(in[7], in[8]);
s[0] = _mm_sub_epi16(in[7], in[8]);
s[1] = _mm_sub_epi16(in[6], in[9]);
s[2] = _mm_sub_epi16(in[5], in[10]);
s[3] = _mm_sub_epi16(in[4], in[11]);
s[4] = _mm_sub_epi16(in[3], in[12]);
s[5] = _mm_sub_epi16(in[2], in[13]);
s[6] = _mm_sub_epi16(in[1], in[14]);
s[7] = _mm_sub_epi16(in[0], in[15]);
p[0] = _mm_add_epi16(i[0], i[7]);
p[1] = _mm_add_epi16(i[1], i[6]);
p[2] = _mm_add_epi16(i[2], i[5]);
p[3] = _mm_add_epi16(i[3], i[4]);
p[4] = _mm_sub_epi16(i[3], i[4]);
p[5] = _mm_sub_epi16(i[2], i[5]);
p[6] = _mm_sub_epi16(i[1], i[6]);
p[7] = _mm_sub_epi16(i[0], i[7]);
u[0] = _mm_add_epi16(p[0], p[3]);
u[1] = _mm_add_epi16(p[1], p[2]);
u[2] = _mm_sub_epi16(p[1], p[2]);
u[3] = _mm_sub_epi16(p[0], p[3]);
v[0] = _mm_unpacklo_epi16(u[0], u[1]);
v[1] = _mm_unpackhi_epi16(u[0], u[1]);
v[2] = _mm_unpacklo_epi16(u[2], u[3]);
v[3] = _mm_unpackhi_epi16(u[2], u[3]);
u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16);
u[1] = _mm_madd_epi16(v[1], k__cospi_p16_p16);
u[2] = _mm_madd_epi16(v[0], k__cospi_p16_m16);
u[3] = _mm_madd_epi16(v[1], k__cospi_p16_m16);
u[4] = _mm_madd_epi16(v[2], k__cospi_p24_p08);
u[5] = _mm_madd_epi16(v[3], k__cospi_p24_p08);
u[6] = _mm_madd_epi16(v[2], k__cospi_m08_p24);
u[7] = _mm_madd_epi16(v[3], k__cospi_m08_p24);
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);
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);
in[0] = _mm_packs_epi32(u[0], u[1]);
in[4] = _mm_packs_epi32(u[4], u[5]);
in[8] = _mm_packs_epi32(u[2], u[3]);
in[12] = _mm_packs_epi32(u[6], u[7]);
u[0] = _mm_unpacklo_epi16(p[5], p[6]);
u[1] = _mm_unpackhi_epi16(p[5], p[6]);
v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16);
v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16);
v[2] = _mm_madd_epi16(u[0], k__cospi_p16_p16);
v[3] = _mm_madd_epi16(u[1], k__cospi_p16_p16);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
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);
u[0] = _mm_packs_epi32(v[0], v[1]);
u[1] = _mm_packs_epi32(v[2], v[3]);
t[0] = _mm_add_epi16(p[4], u[0]);
t[1] = _mm_sub_epi16(p[4], u[0]);
t[2] = _mm_sub_epi16(p[7], u[1]);
t[3] = _mm_add_epi16(p[7], u[1]);
u[0] = _mm_unpacklo_epi16(t[0], t[3]);
u[1] = _mm_unpackhi_epi16(t[0], t[3]);
u[2] = _mm_unpacklo_epi16(t[1], t[2]);
u[3] = _mm_unpackhi_epi16(t[1], t[2]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p28_p04);
v[1] = _mm_madd_epi16(u[1], k__cospi_p28_p04);
v[2] = _mm_madd_epi16(u[2], k__cospi_p12_p20);
v[3] = _mm_madd_epi16(u[3], k__cospi_p12_p20);
v[4] = _mm_madd_epi16(u[2], k__cospi_m20_p12);
v[5] = _mm_madd_epi16(u[3], k__cospi_m20_p12);
v[6] = _mm_madd_epi16(u[0], k__cospi_m04_p28);
v[7] = _mm_madd_epi16(u[1], k__cospi_m04_p28);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
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);
in[2] = _mm_packs_epi32(v[0], v[1]);
in[6] = _mm_packs_epi32(v[4], v[5]);
in[10] = _mm_packs_epi32(v[2], v[3]);
in[14] = _mm_packs_epi32(v[6], v[7]);
// stage 2
u[0] = _mm_unpacklo_epi16(s[2], s[5]);
u[1] = _mm_unpackhi_epi16(s[2], s[5]);
u[2] = _mm_unpacklo_epi16(s[3], s[4]);
u[3] = _mm_unpackhi_epi16(s[3], s[4]);
v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16);
v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16);
v[2] = _mm_madd_epi16(u[2], k__cospi_m16_p16);
v[3] = _mm_madd_epi16(u[3], k__cospi_m16_p16);
v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16);
v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16);
v[6] = _mm_madd_epi16(u[0], k__cospi_p16_p16);
v[7] = _mm_madd_epi16(u[1], k__cospi_p16_p16);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
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);
t[2] = _mm_packs_epi32(v[0], v[1]);
t[3] = _mm_packs_epi32(v[2], v[3]);
t[4] = _mm_packs_epi32(v[4], v[5]);
t[5] = _mm_packs_epi32(v[6], v[7]);
// stage 3
p[0] = _mm_add_epi16(s[0], t[3]);
p[1] = _mm_add_epi16(s[1], t[2]);
p[2] = _mm_sub_epi16(s[1], t[2]);
p[3] = _mm_sub_epi16(s[0], t[3]);
p[4] = _mm_sub_epi16(s[7], t[4]);
p[5] = _mm_sub_epi16(s[6], t[5]);
p[6] = _mm_add_epi16(s[6], t[5]);
p[7] = _mm_add_epi16(s[7], t[4]);
// stage 4
u[0] = _mm_unpacklo_epi16(p[1], p[6]);
u[1] = _mm_unpackhi_epi16(p[1], p[6]);
u[2] = _mm_unpacklo_epi16(p[2], p[5]);
u[3] = _mm_unpackhi_epi16(p[2], p[5]);
v[0] = _mm_madd_epi16(u[0], k__cospi_m08_p24);
v[1] = _mm_madd_epi16(u[1], k__cospi_m08_p24);
v[2] = _mm_madd_epi16(u[2], k__cospi_m24_m08);
v[3] = _mm_madd_epi16(u[3], k__cospi_m24_m08);
v[4] = _mm_madd_epi16(u[2], k__cospi_m08_p24);
v[5] = _mm_madd_epi16(u[3], k__cospi_m08_p24);
v[6] = _mm_madd_epi16(u[0], k__cospi_p24_p08);
v[7] = _mm_madd_epi16(u[1], k__cospi_p24_p08);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
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);
t[1] = _mm_packs_epi32(v[0], v[1]);
t[2] = _mm_packs_epi32(v[2], v[3]);
t[5] = _mm_packs_epi32(v[4], v[5]);
t[6] = _mm_packs_epi32(v[6], v[7]);
// stage 5
s[0] = _mm_add_epi16(p[0], t[1]);
s[1] = _mm_sub_epi16(p[0], t[1]);
s[2] = _mm_sub_epi16(p[3], t[2]);
s[3] = _mm_add_epi16(p[3], t[2]);
s[4] = _mm_add_epi16(p[4], t[5]);
s[5] = _mm_sub_epi16(p[4], t[5]);
s[6] = _mm_sub_epi16(p[7], t[6]);
s[7] = _mm_add_epi16(p[7], t[6]);
// stage 6
u[0] = _mm_unpacklo_epi16(s[0], s[7]);
u[1] = _mm_unpackhi_epi16(s[0], s[7]);
u[2] = _mm_unpacklo_epi16(s[1], s[6]);
u[3] = _mm_unpackhi_epi16(s[1], s[6]);
u[4] = _mm_unpacklo_epi16(s[2], s[5]);
u[5] = _mm_unpackhi_epi16(s[2], s[5]);
u[6] = _mm_unpacklo_epi16(s[3], s[4]);
u[7] = _mm_unpackhi_epi16(s[3], s[4]);
v[0] = _mm_madd_epi16(u[0], k__cospi_p30_p02);
v[1] = _mm_madd_epi16(u[1], k__cospi_p30_p02);
v[2] = _mm_madd_epi16(u[2], k__cospi_p14_p18);
v[3] = _mm_madd_epi16(u[3], k__cospi_p14_p18);
v[4] = _mm_madd_epi16(u[4], k__cospi_p22_p10);
v[5] = _mm_madd_epi16(u[5], k__cospi_p22_p10);
v[6] = _mm_madd_epi16(u[6], k__cospi_p06_p26);
v[7] = _mm_madd_epi16(u[7], k__cospi_p06_p26);
v[8] = _mm_madd_epi16(u[6], k__cospi_m26_p06);
v[9] = _mm_madd_epi16(u[7], k__cospi_m26_p06);
v[10] = _mm_madd_epi16(u[4], k__cospi_m10_p22);
v[11] = _mm_madd_epi16(u[5], k__cospi_m10_p22);
v[12] = _mm_madd_epi16(u[2], k__cospi_m18_p14);
v[13] = _mm_madd_epi16(u[3], k__cospi_m18_p14);
v[14] = _mm_madd_epi16(u[0], k__cospi_m02_p30);
v[15] = _mm_madd_epi16(u[1], k__cospi_m02_p30);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING);
u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING);
u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING);
u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING);
u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING);
u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING);
u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING);
u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING);
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);
in[1] = _mm_packs_epi32(v[0], v[1]);
in[9] = _mm_packs_epi32(v[2], v[3]);
in[5] = _mm_packs_epi32(v[4], v[5]);
in[13] = _mm_packs_epi32(v[6], v[7]);
in[3] = _mm_packs_epi32(v[8], v[9]);
in[11] = _mm_packs_epi32(v[10], v[11]);
in[7] = _mm_packs_epi32(v[12], v[13]);
in[15] = _mm_packs_epi32(v[14], v[15]);
}
void fadst16_1d_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(-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 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]);
v[0] = _mm_madd_epi16(u[0], k__cospi_m16_m16);
v[1] = _mm_madd_epi16(u[1], k__cospi_m16_m16);
v[2] = _mm_madd_epi16(u[0], k__cospi_p16_m16);
v[3] = _mm_madd_epi16(u[1], k__cospi_p16_m16);
v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16);
v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16);
v[6] = _mm_madd_epi16(u[2], k__cospi_m16_p16);
v[7] = _mm_madd_epi16(u[3], k__cospi_m16_p16);
v[8] = _mm_madd_epi16(u[4], k__cospi_p16_p16);
v[9] = _mm_madd_epi16(u[5], k__cospi_p16_p16);
v[10] = _mm_madd_epi16(u[4], k__cospi_m16_p16);
v[11] = _mm_madd_epi16(u[5], k__cospi_m16_p16);
v[12] = _mm_madd_epi16(u[6], k__cospi_m16_m16);
v[13] = _mm_madd_epi16(u[7], k__cospi_m16_m16);
v[14] = _mm_madd_epi16(u[6], k__cospi_p16_m16);
v[15] = _mm_madd_epi16(u[7], k__cospi_p16_m16);
u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING);
u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING);
u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING);
u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING);
u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING);
u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING);
u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING);
u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING);
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);
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[4] = _mm_packs_epi32(v[4], v[5]);
in[5] = _mm_packs_epi32(v[12], v[13]);
in[6] = _mm_packs_epi32(v[8], v[9]);
in[7] = _mm_packs_epi32(v[0], v[1]);
in[8] = _mm_packs_epi32(v[2], v[3]);
in[9] = _mm_packs_epi32(v[10], v[11]);
in[10] = _mm_packs_epi32(v[14], v[15]);
in[11] = _mm_packs_epi32(v[6], v[7]);
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 fdct16_1d_sse2(__m128i *in0, __m128i *in1) {
fdct16_1d_8col(in0);
fdct16_1d_8col(in1);
array_transpose_16x16(in0, in1);
}
void fadst16_1d_sse2(__m128i *in0, __m128i *in1) {
fadst16_1d_8col(in0);
fadst16_1d_8col(in1);
array_transpose_16x16(in0, in1);
}
void vp9_short_fht16x16_sse2(int16_t *input, int16_t *output,
int stride, int tx_type) {
__m128i in0[16], in1[16];
load_buffer_16x16(input, in0, in1, stride);
switch (tx_type) {
case 0: // DCT_DCT
fdct16_1d_sse2(in0, in1);
right_shift_16x16(in0, in1);
fdct16_1d_sse2(in0, in1);
break;
case 1: // ADST_DCT
fadst16_1d_sse2(in0, in1);
right_shift_16x16(in0, in1);
fdct16_1d_sse2(in0, in1);
break;
case 2: // DCT_ADST
fdct16_1d_sse2(in0, in1);
right_shift_16x16(in0, in1);
fadst16_1d_sse2(in0, in1);
break;
case 3: // ADST_ADST
fadst16_1d_sse2(in0, in1);
right_shift_16x16(in0, in1);
fadst16_1d_sse2(in0, in1);
break;
default:
assert(0);
break;
}
write_buffer_16x16(output, in0, in1, 16);
}
void vp9_short_fdct32x32_rd_sse2(int16_t *input,
int16_t *output_org, int pitch) {
// Calculate pre-multiplied strides
const int str1 = pitch >> 1;
const int str2 = pitch;
const int str3 = pitch + str1;
// We need an intermediate buffer between passes.
DECLARE_ALIGNED(16, int16_t, intermediate[32 * 32]);
// Constants
// When we use them, in one case, they are all the same. In all others
// it's a pair of them that we need to repeat four times. This is done
// by constructing the 32 bit constant corresponding to that pair.
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_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
const __m128i k__cospi_p24_p08 = pair_set_epi16(+cospi_24_64, cospi_8_64);
const __m128i k__cospi_p12_p20 = pair_set_epi16(+cospi_12_64, cospi_20_64);
const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i k__cospi_p28_p04 = pair_set_epi16(+cospi_28_64, cospi_4_64);
const __m128i k__cospi_m28_m04 = pair_set_epi16(-cospi_28_64, -cospi_4_64);
const __m128i k__cospi_m12_m20 = pair_set_epi16(-cospi_12_64, -cospi_20_64);
const __m128i k__cospi_p30_p02 = pair_set_epi16(+cospi_30_64, cospi_2_64);
const __m128i k__cospi_p14_p18 = pair_set_epi16(+cospi_14_64, cospi_18_64);
const __m128i k__cospi_p22_p10 = pair_set_epi16(+cospi_22_64, cospi_10_64);
const __m128i k__cospi_p06_p26 = pair_set_epi16(+cospi_6_64, cospi_26_64);
const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64);
const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64);
const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64);
const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64);
const __m128i k__cospi_p31_p01 = pair_set_epi16(+cospi_31_64, cospi_1_64);
const __m128i k__cospi_p15_p17 = pair_set_epi16(+cospi_15_64, cospi_17_64);
const __m128i k__cospi_p23_p09 = pair_set_epi16(+cospi_23_64, cospi_9_64);
const __m128i k__cospi_p07_p25 = pair_set_epi16(+cospi_7_64, cospi_25_64);
const __m128i k__cospi_m25_p07 = pair_set_epi16(-cospi_25_64, cospi_7_64);
const __m128i k__cospi_m09_p23 = pair_set_epi16(-cospi_9_64, cospi_23_64);
const __m128i k__cospi_m17_p15 = pair_set_epi16(-cospi_17_64, cospi_15_64);
const __m128i k__cospi_m01_p31 = pair_set_epi16(-cospi_1_64, cospi_31_64);
const __m128i k__cospi_p27_p05 = pair_set_epi16(+cospi_27_64, cospi_5_64);
const __m128i k__cospi_p11_p21 = pair_set_epi16(+cospi_11_64, cospi_21_64);
const __m128i k__cospi_p19_p13 = pair_set_epi16(+cospi_19_64, cospi_13_64);
const __m128i k__cospi_p03_p29 = pair_set_epi16(+cospi_3_64, cospi_29_64);
const __m128i k__cospi_m29_p03 = pair_set_epi16(-cospi_29_64, cospi_3_64);
const __m128i k__cospi_m13_p19 = pair_set_epi16(-cospi_13_64, cospi_19_64);
const __m128i k__cospi_m21_p11 = pair_set_epi16(-cospi_21_64, cospi_11_64);
const __m128i k__cospi_m05_p27 = pair_set_epi16(-cospi_5_64, cospi_27_64);
const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
const __m128i kZero = _mm_set1_epi16(0);
const __m128i kOne = _mm_set1_epi16(1);
// Do the two transform/transpose passes
int pass;
for (pass = 0; pass < 2; ++pass) {
// We process eight columns (transposed rows in second pass) at a time.
int column_start;
for (column_start = 0; column_start < 32; column_start += 8) {
__m128i step1[32];
__m128i step2[32];
__m128i step3[32];
__m128i out[32];
// Stage 1
// Note: even though all the loads below are aligned, using the aligned
// intrinsic make the code slightly slower.
if (0 == pass) {
int16_t *in = &input[column_start];
// step1[i] = (in[ 0 * stride] + in[(32 - 1) * stride]) << 2;
// Note: the next four blocks could be in a loop. That would help the
// instruction cache but is actually slower.
{
int16_t *ina = in + 0 * str1;
int16_t *inb = in + 31 * str1;
__m128i *step1a = &step1[ 0];
__m128i *step1b = &step1[31];
const __m128i ina0 = _mm_loadu_si128((const __m128i *)(ina));
const __m128i ina1 = _mm_loadu_si128((const __m128i *)(ina + str1));
const __m128i ina2 = _mm_loadu_si128((const __m128i *)(ina + str2));
const __m128i ina3 = _mm_loadu_si128((const __m128i *)(ina + str3));
const __m128i inb3 = _mm_loadu_si128((const __m128i *)(inb - str3));
const __m128i inb2 = _mm_loadu_si128((const __m128i *)(inb - str2));
const __m128i inb1 = _mm_loadu_si128((const __m128i *)(inb - str1));
const __m128i inb0 = _mm_loadu_si128((const __m128i *)(inb));
step1a[ 0] = _mm_add_epi16(ina0, inb0);
step1a[ 1] = _mm_add_epi16(ina1, inb1);
step1a[ 2] = _mm_add_epi16(ina2, inb2);
step1a[ 3] = _mm_add_epi16(ina3, inb3);
step1b[-3] = _mm_sub_epi16(ina3, inb3);
step1b[-2] = _mm_sub_epi16(ina2, inb2);
step1b[-1] = _mm_sub_epi16(ina1, inb1);
step1b[-0] = _mm_sub_epi16(ina0, inb0);
step1a[ 0] = _mm_slli_epi16(step1a[ 0], 2);
step1a[ 1] = _mm_slli_epi16(step1a[ 1], 2);
step1a[ 2] = _mm_slli_epi16(step1a[ 2], 2);
step1a[ 3] = _mm_slli_epi16(step1a[ 3], 2);
step1b[-3] = _mm_slli_epi16(step1b[-3], 2);
step1b[-2] = _mm_slli_epi16(step1b[-2], 2);
step1b[-1] = _mm_slli_epi16(step1b[-1], 2);
step1b[-0] = _mm_slli_epi16(step1b[-0], 2);
}
{
int16_t *ina = in + 4 * str1;
int16_t *inb = in + 27 * str1;
__m128i *step1a = &step1[ 4];
__m128i *step1b = &step1[27];
const __m128i ina0 = _mm_loadu_si128((const __m128i *)(ina));
const __m128i ina1 = _mm_loadu_si128((const __m128i *)(ina + str1));
const __m128i ina2 = _mm_loadu_si128((const __m128i *)(ina + str2));
const __m128i ina3 = _mm_loadu_si128((const __m128i *)(ina + str3));
const __m128i inb3 = _mm_loadu_si128((const __m128i *)(inb - str3));
const __m128i inb2 = _mm_loadu_si128((const __m128i *)(inb - str2));
const __m128i inb1 = _mm_loadu_si128((const __m128i *)(inb - str1));
const __m128i inb0 = _mm_loadu_si128((const __m128i *)(inb));
step1a[ 0] = _mm_add_epi16(ina0, inb0);
step1a[ 1] = _mm_add_epi16(ina1, inb1);
step1a[ 2] = _mm_add_epi16(ina2, inb2);
step1a[ 3] = _mm_add_epi16(ina3, inb3);
step1b[-3] = _mm_sub_epi16(ina3, inb3);
step1b[-2] = _mm_sub_epi16(ina2, inb2);
step1b[-1] = _mm_sub_epi16(ina1, inb1);
step1b[-0] = _mm_sub_epi16(ina0, inb0);
step1a[ 0] = _mm_slli_epi16(step1a[ 0], 2);
step1a[ 1] = _mm_slli_epi16(step1a[ 1], 2);
step1a[ 2] = _mm_slli_epi16(step1a[ 2], 2);
step1a[ 3] = _mm_slli_epi16(step1a[ 3], 2);
step1b[-3] = _mm_slli_epi16(step1b[-3], 2);
step1b[-2] = _mm_slli_epi16(step1b[-2], 2);
step1b[-1] = _mm_slli_epi16(step1b[-1], 2);
step1b[-0] = _mm_slli_epi16(step1b[-0], 2);
}
{
int16_t *ina = in + 8 * str1;
int16_t *inb = in + 23 * str1;
__m128i *step1a = &step1[ 8];
__m128i *step1b = &step1[23];
const __m128i ina0 = _mm_loadu_si128((const __m128i *)(ina));
const __m128i ina1 = _mm_loadu_si128((const __m128i *)(ina + str1));
const __m128i ina2 = _mm_loadu_si128((const __m128i *)(ina + str2));
const __m128i ina3 = _mm_loadu_si128((const __m128i *)(ina + str3));
const __m128i inb3 = _mm_loadu_si128((const __m128i *)(inb - str3));
const __m128i inb2 = _mm_loadu_si128((const __m128i *)(inb - str2));
const __m128i inb1 = _mm_loadu_si128((const __m128i *)(inb - str1));
const __m128i inb0 = _mm_loadu_si128((const __m128i *)(inb));
step1a[ 0] = _mm_add_epi16(ina0, inb0);
step1a[ 1] = _mm_add_epi16(ina1, inb1);
step1a[ 2] = _mm_add_epi16(ina2, inb2);
step1a[ 3] = _mm_add_epi16(ina3, inb3);
step1b[-3] = _mm_sub_epi16(ina3, inb3);
step1b[-2] = _mm_sub_epi16(ina2, inb2);
step1b[-1] = _mm_sub_epi16(ina1, inb1);
step1b[-0] = _mm_sub_epi16(ina0, inb0);
step1a[ 0] = _mm_slli_epi16(step1a[ 0], 2);
step1a[ 1] = _mm_slli_epi16(step1a[ 1], 2);
step1a[ 2] = _mm_slli_epi16(step1a[ 2], 2);
step1a[ 3] = _mm_slli_epi16(step1a[ 3], 2);
step1b[-3] = _mm_slli_epi16(step1b[-3], 2);
step1b[-2] = _mm_slli_epi16(step1b[-2], 2);
step1b[-1] = _mm_slli_epi16(step1b[-1], 2);
step1b[-0] = _mm_slli_epi16(step1b[-0], 2);
}
{
int16_t *ina = in + 12 * str1;
int16_t *inb = in + 19 * str1;
__m128i *step1a = &step1[12];
__m128i *step1b = &step1[19];
const __m128i ina0 = _mm_loadu_si128((const __m128i *)(ina));
const __m128i ina1 = _mm_loadu_si128((const __m128i *)(ina + str1));
const __m128i ina2 = _mm_loadu_si128((const __m128i *)(ina + str2));
const __m128i ina3 = _mm_loadu_si128((const __m128i *)(ina + str3));
const __m128i inb3 = _mm_loadu_si128((const __m128i *)(inb - str3));
const __m128i inb2 = _mm_loadu_si128((const __m128i *)(inb - str2));
const __m128i inb1 = _mm_loadu_si128((const __m128i *)(inb - str1));
const __m128i inb0 = _mm_loadu_si128((const __m128i *)(inb));
step1a[ 0] = _mm_add_epi16(ina0, inb0);
step1a[ 1] = _mm_add_epi16(ina1, inb1);
step1a[ 2] = _mm_add_epi16(ina2, inb2);
step1a[ 3] = _mm_add_epi16(ina3, inb3);
step1b[-3] = _mm_sub_epi16(ina3, inb3);
step1b[-2] = _mm_sub_epi16(ina2, inb2);
step1b[-1] = _mm_sub_epi16(ina1, inb1);
step1b[-0] = _mm_sub_epi16(ina0, inb0);
step1a[ 0] = _mm_slli_epi16(step1a[ 0], 2);
step1a[ 1] = _mm_slli_epi16(step1a[ 1], 2);
step1a[ 2] = _mm_slli_epi16(step1a[ 2], 2);
step1a[ 3] = _mm_slli_epi16(step1a[ 3], 2);
step1b[-3] = _mm_slli_epi16(step1b[-3], 2);
step1b[-2] = _mm_slli_epi16(step1b[-2], 2);
step1b[-1] = _mm_slli_epi16(step1b[-1], 2);
step1b[-0] = _mm_slli_epi16(step1b[-0], 2);
}
} else {
int16_t *in = &intermediate[column_start];
// step1[i] = in[ 0 * 32] + in[(32 - 1) * 32];
// Note: using the same approach as above to have common offset is
// counter-productive as all offsets can be calculated at compile
// time.
// Note: the next four blocks could be in a loop. That would help the
// instruction cache but is actually slower.
{
__m128i in00 = _mm_loadu_si128((const __m128i *)(in + 0 * 32));
__m128i in01 = _mm_loadu_si128((const __m128i *)(in + 1 * 32));
__m128i in02 = _mm_loadu_si128((const __m128i *)(in + 2 * 32));
__m128i in03 = _mm_loadu_si128((const __m128i *)(in + 3 * 32));
__m128i in28 = _mm_loadu_si128((const __m128i *)(in + 28 * 32));
__m128i in29 = _mm_loadu_si128((const __m128i *)(in + 29 * 32));
__m128i in30 = _mm_loadu_si128((const __m128i *)(in + 30 * 32));
__m128i in31 = _mm_loadu_si128((const __m128i *)(in + 31 * 32));
step1[ 0] = _mm_add_epi16(in00, in31);
step1[ 1] = _mm_add_epi16(in01, in30);
step1[ 2] = _mm_add_epi16(in02, in29);
step1[ 3] = _mm_add_epi16(in03, in28);
step1[28] = _mm_sub_epi16(in03, in28);
step1[29] = _mm_sub_epi16(in02, in29);
step1[30] = _mm_sub_epi16(in01, in30);
step1[31] = _mm_sub_epi16(in00, in31);
}
{
__m128i in04 = _mm_loadu_si128((const __m128i *)(in + 4 * 32));
__m128i in05 = _mm_loadu_si128((const __m128i *)(in + 5 * 32));
__m128i in06 = _mm_loadu_si128((const __m128i *)(in + 6 * 32));
__m128i in07 = _mm_loadu_si128((const __m128i *)(in + 7 * 32));
__m128i in24 = _mm_loadu_si128((const __m128i *)(in + 24 * 32));
__m128i in25 = _mm_loadu_si128((const __m128i *)(in + 25 * 32));
__m128i in26 = _mm_loadu_si128((const __m128i *)(in + 26 * 32));
__m128i in27 = _mm_loadu_si128((const __m128i *)(in + 27 * 32));
step1[ 4] = _mm_add_epi16(in04, in27);
step1[ 5] = _mm_add_epi16(in05, in26);
step1[ 6] = _mm_add_epi16(in06, in25);
step1[ 7] = _mm_add_epi16(in07, in24);
step1[24] = _mm_sub_epi16(in07, in24);
step1[25] = _mm_sub_epi16(in06, in25);
step1[26] = _mm_sub_epi16(in05, in26);
step1[27] = _mm_sub_epi16(in04, in27);
}
{
__m128i in08 = _mm_loadu_si128((const __m128i *)(in + 8 * 32));
__m128i in09 = _mm_loadu_si128((const __m128i *)(in + 9 * 32));
__m128i in10 = _mm_loadu_si128((const __m128i *)(in + 10 * 32));
__m128i in11 = _mm_loadu_si128((const __m128i *)(in + 11 * 32));
__m128i in20 = _mm_loadu_si128((const __m128i *)(in + 20 * 32));
__m128i in21 = _mm_loadu_si128((const __m128i *)(in + 21 * 32));
__m128i in22 = _mm_loadu_si128((const __m128i *)(in + 22 * 32));
__m128i in23 = _mm_loadu_si128((const __m128i *)(in + 23 * 32));
step1[ 8] = _mm_add_epi16(in08, in23);
step1[ 9] = _mm_add_epi16(in09, in22);
step1[10] = _mm_add_epi16(in10, in21);
step1[11] = _mm_add_epi16(in11, in20);
step1[20] = _mm_sub_epi16(in11, in20);
step1[21] = _mm_sub_epi16(in10, in21);
step1[22] = _mm_sub_epi16(in09, in22);
step1[23] = _mm_sub_epi16(in08, in23);
}
{
__m128i in12 = _mm_loadu_si128((const __m128i *)(in + 12 * 32));
__m128i in13 = _mm_loadu_si128((const __m128i *)(in + 13 * 32));
__m128i in14 = _mm_loadu_si128((const __m128i *)(in + 14 * 32));
__m128i in15 = _mm_loadu_si128((const __m128i *)(in + 15 * 32));
__m128i in16 = _mm_loadu_si128((const __m128i *)(in + 16 * 32));
__m128i in17 = _mm_loadu_si128((const __m128i *)(in + 17 * 32));
__m128i in18 = _mm_loadu_si128((const __m128i *)(in + 18 * 32));
__m128i in19 = _mm_loadu_si128((const __m128i *)(in + 19 * 32));
step1[12] = _mm_add_epi16(in12, in19);
step1[13] = _mm_add_epi16(in13, in18);
step1[14] = _mm_add_epi16(in14, in17);
step1[15] = _mm_add_epi16(in15, in16);
step1[16] = _mm_sub_epi16(in15, in16);
step1[17] = _mm_sub_epi16(in14, in17);
step1[18] = _mm_sub_epi16(in13, in18);
step1[19] = _mm_sub_epi16(in12, in19);
}
}
// Stage 2
{
step2[ 0] = _mm_add_epi16(step1[0], step1[15]);
step2[ 1] = _mm_add_epi16(step1[1], step1[14]);
step2[ 2] = _mm_add_epi16(step1[2], step1[13]);
step2[ 3] = _mm_add_epi16(step1[3], step1[12]);
step2[ 4] = _mm_add_epi16(step1[4], step1[11]);
step2[ 5] = _mm_add_epi16(step1[5], step1[10]);
step2[ 6] = _mm_add_epi16(step1[6], step1[ 9]);
step2[ 7] = _mm_add_epi16(step1[7], step1[ 8]);
step2[ 8] = _mm_sub_epi16(step1[7], step1[ 8]);
step2[ 9] = _mm_sub_epi16(step1[6], step1[ 9]);
step2[10] = _mm_sub_epi16(step1[5], step1[10]);
step2[11] = _mm_sub_epi16(step1[4], step1[11]);
step2[12] = _mm_sub_epi16(step1[3], step1[12]);
step2[13] = _mm_sub_epi16(step1[2], step1[13]);
step2[14] = _mm_sub_epi16(step1[1], step1[14]);
step2[15] = _mm_sub_epi16(step1[0], step1[15]);
}
{
const __m128i s2_20_0 = _mm_unpacklo_epi16(step1[27], step1[20]);
const __m128i s2_20_1 = _mm_unpackhi_epi16(step1[27], step1[20]);
const __m128i s2_21_0 = _mm_unpacklo_epi16(step1[26], step1[21]);
const __m128i s2_21_1 = _mm_unpackhi_epi16(step1[26], step1[21]);
const __m128i s2_22_0 = _mm_unpacklo_epi16(step1[25], step1[22]);
const __m128i s2_22_1 = _mm_unpackhi_epi16(step1[25], step1[22]);
const __m128i s2_23_0 = _mm_unpacklo_epi16(step1[24], step1[23]);
const __m128i s2_23_1 = _mm_unpackhi_epi16(step1[24], step1[23]);
const __m128i s2_20_2 = _mm_madd_epi16(s2_20_0, k__cospi_p16_m16);
const __m128i s2_20_3 = _mm_madd_epi16(s2_20_1, k__cospi_p16_m16);
const __m128i s2_21_2 = _mm_madd_epi16(s2_21_0, k__cospi_p16_m16);
const __m128i s2_21_3 = _mm_madd_epi16(s2_21_1, k__cospi_p16_m16);
const __m128i s2_22_2 = _mm_madd_epi16(s2_22_0, k__cospi_p16_m16);
const __m128i s2_22_3 = _mm_madd_epi16(s2_22_1, k__cospi_p16_m16);
const __m128i s2_23_2 = _mm_madd_epi16(s2_23_0, k__cospi_p16_m16);
const __m128i s2_23_3 = _mm_madd_epi16(s2_23_1, k__cospi_p16_m16);
const __m128i s2_24_2 = _mm_madd_epi16(s2_23_0, k__cospi_p16_p16);
const __m128i s2_24_3 = _mm_madd_epi16(s2_23_1, k__cospi_p16_p16);
const __m128i s2_25_2 = _mm_madd_epi16(s2_22_0, k__cospi_p16_p16);
const __m128i s2_25_3 = _mm_madd_epi16(s2_22_1, k__cospi_p16_p16);
const __m128i s2_26_2 = _mm_madd_epi16(s2_21_0, k__cospi_p16_p16);
const __m128i s2_26_3 = _mm_madd_epi16(s2_21_1, k__cospi_p16_p16);
const __m128i s2_27_2 = _mm_madd_epi16(s2_20_0, k__cospi_p16_p16);
const __m128i s2_27_3 = _mm_madd_epi16(s2_20_1, k__cospi_p16_p16);
// dct_const_round_shift
const __m128i s2_20_4 = _mm_add_epi32(s2_20_2, k__DCT_CONST_ROUNDING);
const __m128i s2_20_5 = _mm_add_epi32(s2_20_3, k__DCT_CONST_ROUNDING);
const __m128i s2_21_4 = _mm_add_epi32(s2_21_2, k__DCT_CONST_ROUNDING);
const __m128i s2_21_5 = _mm_add_epi32(s2_21_3, k__DCT_CONST_ROUNDING);
const __m128i s2_22_4 = _mm_add_epi32(s2_22_2, k__DCT_CONST_ROUNDING);
const __m128i s2_22_5 = _mm_add_epi32(s2_22_3, k__DCT_CONST_ROUNDING);
const __m128i s2_23_4 = _mm_add_epi32(s2_23_2, k__DCT_CONST_ROUNDING);
const __m128i s2_23_5 = _mm_add_epi32(s2_23_3, k__DCT_CONST_ROUNDING);
const __m128i s2_24_4 = _mm_add_epi32(s2_24_2, k__DCT_CONST_ROUNDING);
const __m128i s2_24_5 = _mm_add_epi32(s2_24_3, k__DCT_CONST_ROUNDING);
const __m128i s2_25_4 = _mm_add_epi32(s2_25_2, k__DCT_CONST_ROUNDING);
const __m128i s2_25_5 = _mm_add_epi32(s2_25_3, k__DCT_CONST_ROUNDING);
const __m128i s2_26_4 = _mm_add_epi32(s2_26_2, k__DCT_CONST_ROUNDING);
const __m128i s2_26_5 = _mm_add_epi32(s2_26_3, k__DCT_CONST_ROUNDING);
const __m128i s2_27_4 = _mm_add_epi32(s2_27_2, k__DCT_CONST_ROUNDING);
const __m128i s2_27_5 = _mm_add_epi32(s2_27_3, k__DCT_CONST_ROUNDING);
const __m128i s2_20_6 = _mm_srai_epi32(s2_20_4, DCT_CONST_BITS);
const __m128i s2_20_7 = _mm_srai_epi32(s2_20_5, DCT_CONST_BITS);
const __m128i s2_21_6 = _mm_srai_epi32(s2_21_4, DCT_CONST_BITS);
const __m128i s2_21_7 = _mm_srai_epi32(s2_21_5, DCT_CONST_BITS);
const __m128i s2_22_6 = _mm_srai_epi32(s2_22_4, DCT_CONST_BITS);
const __m128i s2_22_7 = _mm_srai_epi32(s2_22_5, DCT_CONST_BITS);
const __m128i s2_23_6 = _mm_srai_epi32(s2_23_4, DCT_CONST_BITS);
const __m128i s2_23_7 = _mm_srai_epi32(s2_23_5, DCT_CONST_BITS);
const __m128i s2_24_6 = _mm_srai_epi32(s2_24_4, DCT_CONST_BITS);
const __m128i s2_24_7 = _mm_srai_epi32(s2_24_5, DCT_CONST_BITS);
const __m128i s2_25_6 = _mm_srai_epi32(s2_25_4, DCT_CONST_BITS);
const __m128i s2_25_7 = _mm_srai_epi32(s2_25_5, DCT_CONST_BITS);
const __m128i s2_26_6 = _mm_srai_epi32(s2_26_4, DCT_CONST_BITS);
const __m128i s2_26_7 = _mm_srai_epi32(s2_26_5, DCT_CONST_BITS);
const __m128i s2_27_6 = _mm_srai_epi32(s2_27_4, DCT_CONST_BITS);
const __m128i s2_27_7 = _mm_srai_epi32(s2_27_5, DCT_CONST_BITS);
// Combine
step2[20] = _mm_packs_epi32(s2_20_6, s2_20_7);
step2[21] = _mm_packs_epi32(s2_21_6, s2_21_7);
step2[22] = _mm_packs_epi32(s2_22_6, s2_22_7);
step2[23] = _mm_packs_epi32(s2_23_6, s2_23_7);
step2[24] = _mm_packs_epi32(s2_24_6, s2_24_7);
step2[25] = _mm_packs_epi32(s2_25_6, s2_25_7);
step2[26] = _mm_packs_epi32(s2_26_6, s2_26_7);
step2[27] = _mm_packs_epi32(s2_27_6, s2_27_7);
}
// Stage 3
{
step3[0] = _mm_add_epi16(step2[(8 - 1)], step2[0]);
step3[1] = _mm_add_epi16(step2[(8 - 2)], step2[1]);
step3[2] = _mm_add_epi16(step2[(8 - 3)], step2[2]);
step3[3] = _mm_add_epi16(step2[(8 - 4)], step2[3]);
step3[4] = _mm_sub_epi16(step2[(8 - 5)], step2[4]);
step3[5] = _mm_sub_epi16(step2[(8 - 6)], step2[5]);
step3[6] = _mm_sub_epi16(step2[(8 - 7)], step2[6]);
step3[7] = _mm_sub_epi16(step2[(8 - 8)], step2[7]);
}
{
const __m128i s3_10_0 = _mm_unpacklo_epi16(step2[13], step2[10]);
const __m128i s3_10_1 = _mm_unpackhi_epi16(step2[13], step2[10]);
const __m128i s3_11_0 = _mm_unpacklo_epi16(step2[12], step2[11]);
const __m128i s3_11_1 = _mm_unpackhi_epi16(step2[12], step2[11]);
const __m128i s3_10_2 = _mm_madd_epi16(s3_10_0, k__cospi_p16_m16);
const __m128i s3_10_3 = _mm_madd_epi16(s3_10_1, k__cospi_p16_m16);
const __m128i s3_11_2 = _mm_madd_epi16(s3_11_0, k__cospi_p16_m16);
const __m128i s3_11_3 = _mm_madd_epi16(s3_11_1, k__cospi_p16_m16);
const __m128i s3_12_2 = _mm_madd_epi16(s3_11_0, k__cospi_p16_p16);
const __m128i s3_12_3 = _mm_madd_epi16(s3_11_1, k__cospi_p16_p16);
const __m128i s3_13_2 = _mm_madd_epi16(s3_10_0, k__cospi_p16_p16);
const __m128i s3_13_3 = _mm_madd_epi16(s3_10_1, k__cospi_p16_p16);
// dct_const_round_shift
const __m128i s3_10_4 = _mm_add_epi32(s3_10_2, k__DCT_CONST_ROUNDING);
const __m128i s3_10_5 = _mm_add_epi32(s3_10_3, k__DCT_CONST_ROUNDING);
const __m128i s3_11_4 = _mm_add_epi32(s3_11_2, k__DCT_CONST_ROUNDING);
const __m128i s3_11_5 = _mm_add_epi32(s3_11_3, k__DCT_CONST_ROUNDING);
const __m128i s3_12_4 = _mm_add_epi32(s3_12_2, k__DCT_CONST_ROUNDING);
const __m128i s3_12_5 = _mm_add_epi32(s3_12_3, k__DCT_CONST_ROUNDING);
const __m128i s3_13_4 = _mm_add_epi32(s3_13_2, k__DCT_CONST_ROUNDING);
const __m128i s3_13_5 = _mm_add_epi32(s3_13_3, k__DCT_CONST_ROUNDING);
const __m128i s3_10_6 = _mm_srai_epi32(s3_10_4, DCT_CONST_BITS);
const __m128i s3_10_7 = _mm_srai_epi32(s3_10_5, DCT_CONST_BITS);
const __m128i s3_11_6 = _mm_srai_epi32(s3_11_4, DCT_CONST_BITS);
const __m128i s3_11_7 = _mm_srai_epi32(s3_11_5, DCT_CONST_BITS);
const __m128i s3_12_6 = _mm_srai_epi32(s3_12_4, DCT_CONST_BITS);
const __m128i s3_12_7 = _mm_srai_epi32(s3_12_5, DCT_CONST_BITS);
const __m128i s3_13_6 = _mm_srai_epi32(s3_13_4, DCT_CONST_BITS);
const __m128i s3_13_7 = _mm_srai_epi32(s3_13_5, DCT_CONST_BITS);
// Combine
step3[10] = _mm_packs_epi32(s3_10_6, s3_10_7);
step3[11] = _mm_packs_epi32(s3_11_6, s3_11_7);
step3[12] = _mm_packs_epi32(s3_12_6, s3_12_7);
step3[13] = _mm_packs_epi32(s3_13_6, s3_13_7);
}
{
step3[16] = _mm_add_epi16(step2[23], step1[16]);
step3[17] = _mm_add_epi16(step2[22], step1[17]);
step3[18] = _mm_add_epi16(step2[21], step1[18]);
step3[19] = _mm_add_epi16(step2[20], step1[19]);
step3[20] = _mm_sub_epi16(step1[19], step2[20]);
step3[21] = _mm_sub_epi16(step1[18], step2[21]);
step3[22] = _mm_sub_epi16(step1[17], step2[22]);
step3[23] = _mm_sub_epi16(step1[16], step2[23]);
step3[24] = _mm_sub_epi16(step1[31], step2[24]);
step3[25] = _mm_sub_epi16(step1[30], step2[25]);
step3[26] = _mm_sub_epi16(step1[29], step2[26]);
step3[27] = _mm_sub_epi16(step1[28], step2[27]);
step3[28] = _mm_add_epi16(step2[27], step1[28]);
step3[29] = _mm_add_epi16(step2[26], step1[29]);
step3[30] = _mm_add_epi16(step2[25], step1[30]);
step3[31] = _mm_add_epi16(step2[24], step1[31]);
}
// dump the magnitude by half, hence the intermediate values are within
// the range of 16 bits.
if (1 == pass) {
__m128i s3_00_0 = _mm_cmplt_epi16(step3[ 0], kZero);
__m128i s3_01_0 = _mm_cmplt_epi16(step3[ 1], kZero);
__m128i s3_02_0 = _mm_cmplt_epi16(step3[ 2], kZero);
__m128i s3_03_0 = _mm_cmplt_epi16(step3[ 3], kZero);
__m128i s3_04_0 = _mm_cmplt_epi16(step3[ 4], kZero);
__m128i s3_05_0 = _mm_cmplt_epi16(step3[ 5], kZero);
__m128i s3_06_0 = _mm_cmplt_epi16(step3[ 6], kZero);
__m128i s3_07_0 = _mm_cmplt_epi16(step3[ 7], kZero);
__m128i s2_08_0 = _mm_cmplt_epi16(step2[ 8], kZero);
__m128i s2_09_0 = _mm_cmplt_epi16(step2[ 9], kZero);
__m128i s3_10_0 = _mm_cmplt_epi16(step3[10], kZero);
__m128i s3_11_0 = _mm_cmplt_epi16(step3[11], kZero);
__m128i s3_12_0 = _mm_cmplt_epi16(step3[12], kZero);
__m128i s3_13_0 = _mm_cmplt_epi16(step3[13], kZero);
__m128i s2_14_0 = _mm_cmplt_epi16(step2[14], kZero);
__m128i s2_15_0 = _mm_cmplt_epi16(step2[15], kZero);
__m128i s3_16_0 = _mm_cmplt_epi16(step3[16], kZero);
__m128i s3_17_0 = _mm_cmplt_epi16(step3[17], kZero);
__m128i s3_18_0 = _mm_cmplt_epi16(step3[18], kZero);
__m128i s3_19_0 = _mm_cmplt_epi16(step3[19], kZero);
__m128i s3_20_0 = _mm_cmplt_epi16(step3[20], kZero);
__m128i s3_21_0 = _mm_cmplt_epi16(step3[21], kZero);
__m128i s3_22_0 = _mm_cmplt_epi16(step3[22], kZero);
__m128i s3_23_0 = _mm_cmplt_epi16(step3[23], kZero);
__m128i s3_24_0 = _mm_cmplt_epi16(step3[24], kZero);
__m128i s3_25_0 = _mm_cmplt_epi16(step3[25], kZero);
__m128i s3_26_0 = _mm_cmplt_epi16(step3[26], kZero);
__m128i s3_27_0 = _mm_cmplt_epi16(step3[27], kZero);
__m128i s3_28_0 = _mm_cmplt_epi16(step3[28], kZero);
__m128i s3_29_0 = _mm_cmplt_epi16(step3[29], kZero);
__m128i s3_30_0 = _mm_cmplt_epi16(step3[30], kZero);
__m128i s3_31_0 = _mm_cmplt_epi16(step3[31], kZero);
step3[ 0] = _mm_sub_epi16(step3[ 0], s3_00_0);
step3[ 1] = _mm_sub_epi16(step3[ 1], s3_01_0);
step3[ 2] = _mm_sub_epi16(step3[ 2], s3_02_0);
step3[ 3] = _mm_sub_epi16(step3[ 3], s3_03_0);
step3[ 4] = _mm_sub_epi16(step3[ 4], s3_04_0);
step3[ 5] = _mm_sub_epi16(step3[ 5], s3_05_0);
step3[ 6] = _mm_sub_epi16(step3[ 6], s3_06_0);
step3[ 7] = _mm_sub_epi16(step3[ 7], s3_07_0);
step2[ 8] = _mm_sub_epi16(step2[ 8], s2_08_0);
step2[ 9] = _mm_sub_epi16(step2[ 9], s2_09_0);
step3[10] = _mm_sub_epi16(step3[10], s3_10_0);
step3[11] = _mm_sub_epi16(step3[11], s3_11_0);
step3[12] = _mm_sub_epi16(step3[12], s3_12_0);
step3[13] = _mm_sub_epi16(step3[13], s3_13_0);
step2[14] = _mm_sub_epi16(step2[14], s2_14_0);
step2[15] = _mm_sub_epi16(step2[15], s2_15_0);
step3[16] = _mm_sub_epi16(step3[16], s3_16_0);
step3[17] = _mm_sub_epi16(step3[17], s3_17_0);
step3[18] = _mm_sub_epi16(step3[18], s3_18_0);
step3[19] = _mm_sub_epi16(step3[19], s3_19_0);
step3[20] = _mm_sub_epi16(step3[20], s3_20_0);
step3[21] = _mm_sub_epi16(step3[21], s3_21_0);
step3[22] = _mm_sub_epi16(step3[22], s3_22_0);
step3[23] = _mm_sub_epi16(step3[23], s3_23_0);
step3[24] = _mm_sub_epi16(step3[24], s3_24_0);
step3[25] = _mm_sub_epi16(step3[25], s3_25_0);
step3[26] = _mm_sub_epi16(step3[26], s3_26_0);
step3[27] = _mm_sub_epi16(step3[27], s3_27_0);
step3[28] = _mm_sub_epi16(step3[28], s3_28_0);
step3[29] = _mm_sub_epi16(step3[29], s3_29_0);
step3[30] = _mm_sub_epi16(step3[30], s3_30_0);
step3[31] = _mm_sub_epi16(step3[31], s3_31_0);
step3[ 0] = _mm_add_epi16(step3[ 0], kOne);
step3[ 1] = _mm_add_epi16(step3[ 1], kOne);
step3[ 2] = _mm_add_epi16(step3[ 2], kOne);
step3[ 3] = _mm_add_epi16(step3[ 3], kOne);
step3[ 4] = _mm_add_epi16(step3[ 4], kOne);
step3[ 5] = _mm_add_epi16(step3[ 5], kOne);
step3[ 6] = _mm_add_epi16(step3[ 6], kOne);
step3[ 7] = _mm_add_epi16(step3[ 7], kOne);
step2[ 8] = _mm_add_epi16(step2[ 8], kOne);
step2[ 9] = _mm_add_epi16(step2[ 9], kOne);
step3[10] = _mm_add_epi16(step3[10], kOne);
step3[11] = _mm_add_epi16(step3[11], kOne);
step3[12] = _mm_add_epi16(step3[12], kOne);
step3[13] = _mm_add_epi16(step3[13], kOne);
step2[14] = _mm_add_epi16(step2[14], kOne);
step2[15] = _mm_add_epi16(step2[15], kOne);
step3[16] = _mm_add_epi16(step3[16], kOne);
step3[17] = _mm_add_epi16(step3[17], kOne);
step3[18] = _mm_add_epi16(step3[18], kOne);
step3[19] = _mm_add_epi16(step3[19], kOne);
step3[20] = _mm_add_epi16(step3[20], kOne);
step3[21] = _mm_add_epi16(step3[21], kOne);
step3[22] = _mm_add_epi16(step3[22], kOne);
step3[23] = _mm_add_epi16(step3[23], kOne);
step3[24] = _mm_add_epi16(step3[24], kOne);
step3[25] = _mm_add_epi16(step3[25], kOne);
step3[26] = _mm_add_epi16(step3[26], kOne);
step3[27] = _mm_add_epi16(step3[27], kOne);
step3[28] = _mm_add_epi16(step3[28], kOne);
step3[29] = _mm_add_epi16(step3[29], kOne);
step3[30] = _mm_add_epi16(step3[30], kOne);
step3[31] = _mm_add_epi16(step3[31], kOne);
step3[ 0] = _mm_srai_epi16(step3[ 0], 2);
step3[ 1] = _mm_srai_epi16(step3[ 1], 2);
step3[ 2] = _mm_srai_epi16(step3[ 2], 2);
step3[ 3] = _mm_srai_epi16(step3[ 3], 2);
step3[ 4] = _mm_srai_epi16(step3[ 4], 2);
step3[ 5] = _mm_srai_epi16(step3[ 5], 2);
step3[ 6] = _mm_srai_epi16(step3[ 6], 2);
step3[ 7] = _mm_srai_epi16(step3[ 7], 2);
step2[ 8] = _mm_srai_epi16(step2[ 8], 2);
step2[ 9] = _mm_srai_epi16(step2[ 9], 2);
step3[10] = _mm_srai_epi16(step3[10], 2);
step3[11] = _mm_srai_epi16(step3[11], 2);
step3[12] = _mm_srai_epi16(step3[12], 2);
step3[13] = _mm_srai_epi16(step3[13], 2);
step2[14] = _mm_srai_epi16(step2[14], 2);
step2[15] = _mm_srai_epi16(step2[15], 2);
step3[16] = _mm_srai_epi16(step3[16], 2);
step3[17] = _mm_srai_epi16(step3[17], 2);
step3[18] = _mm_srai_epi16(step3[18], 2);
step3[19] = _mm_srai_epi16(step3[19], 2);
step3[20] = _mm_srai_epi16(step3[20], 2);
step3[21] = _mm_srai_epi16(step3[21], 2);
step3[22] = _mm_srai_epi16(step3[22], 2);
step3[23] = _mm_srai_epi16(step3[23], 2);
step3[24] = _mm_srai_epi16(step3[24], 2);
step3[25] = _mm_srai_epi16(step3[25], 2);
step3[26] = _mm_srai_epi16(step3[26], 2);
step3[27] = _mm_srai_epi16(step3[27], 2);
step3[28] = _mm_srai_epi16(step3[28], 2);
step3[29] = _mm_srai_epi16(step3[29], 2);
step3[30] = _mm_srai_epi16(step3[30], 2);
step3[31] = _mm_srai_epi16(step3[31], 2);
}
// Stage 4
{
step1[ 0] = _mm_add_epi16(step3[ 3], step3[ 0]);
step1[ 1] = _mm_add_epi16(step3[ 2], step3[ 1]);
step1[ 2] = _mm_sub_epi16(step3[ 1], step3[ 2]);
step1[ 3] = _mm_sub_epi16(step3[ 0], step3[ 3]);
step1[ 8] = _mm_add_epi16(step3[11], step2[ 8]);
step1[ 9] = _mm_add_epi16(step3[10], step2[ 9]);
step1[10] = _mm_sub_epi16(step2[ 9], step3[10]);
step1[11] = _mm_sub_epi16(step2[ 8], step3[11]);
step1[12] = _mm_sub_epi16(step2[15], step3[12]);
step1[13] = _mm_sub_epi16(step2[14], step3[13]);
step1[14] = _mm_add_epi16(step3[13], step2[14]);
step1[15] = _mm_add_epi16(step3[12], step2[15]);
}
{
const __m128i s1_05_0 = _mm_unpacklo_epi16(step3[6], step3[5]);
const __m128i s1_05_1 = _mm_unpackhi_epi16(step3[6], step3[5]);
const __m128i s1_05_2 = _mm_madd_epi16(s1_05_0, k__cospi_p16_m16);
const __m128i s1_05_3 = _mm_madd_epi16(s1_05_1, k__cospi_p16_m16);
const __m128i s1_06_2 = _mm_madd_epi16(s1_05_0, k__cospi_p16_p16);
const __m128i s1_06_3 = _mm_madd_epi16(s1_05_1, k__cospi_p16_p16);
// dct_const_round_shift
const __m128i s1_05_4 = _mm_add_epi32(s1_05_2, k__DCT_CONST_ROUNDING);
const __m128i s1_05_5 = _mm_add_epi32(s1_05_3, k__DCT_CONST_ROUNDING);
const __m128i s1_06_4 = _mm_add_epi32(s1_06_2, k__DCT_CONST_ROUNDING);
const __m128i s1_06_5 = _mm_add_epi32(s1_06_3, k__DCT_CONST_ROUNDING);
const __m128i s1_05_6 = _mm_srai_epi32(s1_05_4, DCT_CONST_BITS);
const __m128i s1_05_7 = _mm_srai_epi32(s1_05_5, DCT_CONST_BITS);
const __m128i s1_06_6 = _mm_srai_epi32(s1_06_4, DCT_CONST_BITS);
const __m128i s1_06_7 = _mm_srai_epi32(s1_06_5, DCT_CONST_BITS);
// Combine
step1[5] = _mm_packs_epi32(s1_05_6, s1_05_7);
step1[6] = _mm_packs_epi32(s1_06_6, s1_06_7);
}
{
const __m128i s1_18_0 = _mm_unpacklo_epi16(step3[18], step3[29]);
const __m128i s1_18_1 = _mm_unpackhi_epi16(step3[18], step3[29]);
const __m128i s1_19_0 = _mm_unpacklo_epi16(step3[19], step3[28]);
const __m128i s1_19_1 = _mm_unpackhi_epi16(step3[19], step3[28]);
const __m128i s1_20_0 = _mm_unpacklo_epi16(step3[20], step3[27]);
const __m128i s1_20_1 = _mm_unpackhi_epi16(step3[20], step3[27]);
const __m128i s1_21_0 = _mm_unpacklo_epi16(step3[21], step3[26]);
const __m128i s1_21_1 = _mm_unpackhi_epi16(step3[21], step3[26]);
const __m128i s1_18_2 = _mm_madd_epi16(s1_18_0, k__cospi_m08_p24);
const __m128i s1_18_3 = _mm_madd_epi16(s1_18_1, k__cospi_m08_p24);
const __m128i s1_19_2 = _mm_madd_epi16(s1_19_0, k__cospi_m08_p24);
const __m128i s1_19_3 = _mm_madd_epi16(s1_19_1, k__cospi_m08_p24);
const __m128i s1_20_2 = _mm_madd_epi16(s1_20_0, k__cospi_m24_m08);
const __m128i s1_20_3 = _mm_madd_epi16(s1_20_1, k__cospi_m24_m08);
const __m128i s1_21_2 = _mm_madd_epi16(s1_21_0, k__cospi_m24_m08);
const __m128i s1_21_3 = _mm_madd_epi16(s1_21_1, k__cospi_m24_m08);
const __m128i s1_26_2 = _mm_madd_epi16(s1_21_0, k__cospi_m08_p24);
const __m128i s1_26_3 = _mm_madd_epi16(s1_21_1, k__cospi_m08_p24);
const __m128i s1_27_2 = _mm_madd_epi16(s1_20_0, k__cospi_m08_p24);
const __m128i s1_27_3 = _mm_madd_epi16(s1_20_1, k__cospi_m08_p24);
const __m128i s1_28_2 = _mm_madd_epi16(s1_19_0, k__cospi_p24_p08);
const __m128i s1_28_3 = _mm_madd_epi16(s1_19_1, k__cospi_p24_p08);
const __m128i s1_29_2 = _mm_madd_epi16(s1_18_0, k__cospi_p24_p08);
const __m128i s1_29_3 = _mm_madd_epi16(s1_18_1, k__cospi_p24_p08);
// dct_const_round_shift
const __m128i s1_18_4 = _mm_add_epi32(s1_18_2, k__DCT_CONST_ROUNDING);
const __m128i s1_18_5 = _mm_add_epi32(s1_18_3, k__DCT_CONST_ROUNDING);
const __m128i s1_19_4 = _mm_add_epi32(s1_19_2, k__DCT_CONST_ROUNDING);
const __m128i s1_19_5 = _mm_add_epi32(s1_19_3, k__DCT_CONST_ROUNDING);
const __m128i s1_20_4 = _mm_add_epi32(s1_20_2, k__DCT_CONST_ROUNDING);
const __m128i s1_20_5 = _mm_add_epi32(s1_20_3, k__DCT_CONST_ROUNDING);
const __m128i s1_21_4 = _mm_add_epi32(s1_21_2, k__DCT_CONST_ROUNDING);
const __m128i s1_21_5 = _mm_add_epi32(s1_21_3, k__DCT_CONST_ROUNDING);
const __m128i s1_26_4 = _mm_add_epi32(s1_26_2, k__DCT_CONST_ROUNDING);
const __m128i s1_26_5 = _mm_add_epi32(s1_26_3, k__DCT_CONST_ROUNDING);
const __m128i s1_27_4 = _mm_add_epi32(s1_27_2, k__DCT_CONST_ROUNDING);
const __m128i s1_27_5 = _mm_add_epi32(s1_27_3, k__DCT_CONST_ROUNDING);
const __m128i s1_28_4 = _mm_add_epi32(s1_28_2, k__DCT_CONST_ROUNDING);
const __m128i s1_28_5 = _mm_add_epi32(s1_28_3, k__DCT_CONST_ROUNDING);
const __m128i s1_29_4 = _mm_add_epi32(s1_29_2, k__DCT_CONST_ROUNDING);
const __m128i s1_29_5 = _mm_add_epi32(s1_29_3, k__DCT_CONST_ROUNDING);
const __m128i s1_18_6 = _mm_srai_epi32(s1_18_4, DCT_CONST_BITS);
const __m128i s1_18_7 = _mm_srai_epi32(s1_18_5, DCT_CONST_BITS);
const __m128i s1_19_6 = _mm_srai_epi32(s1_19_4, DCT_CONST_BITS);
const __m128i s1_19_7 = _mm_srai_epi32(s1_19_5, DCT_CONST_BITS);
const __m128i s1_20_6 = _mm_srai_epi32(s1_20_4, DCT_CONST_BITS);
const __m128i s1_20_7 = _mm_srai_epi32(s1_20_5, DCT_CONST_BITS);
const __m128i s1_21_6 = _mm_srai_epi32(s1_21_4, DCT_CONST_BITS);
const __m128i s1_21_7 = _mm_srai_epi32(s1_21_5, DCT_CONST_BITS);
const __m128i s1_26_6 = _mm_srai_epi32(s1_26_4, DCT_CONST_BITS);
const __m128i s1_26_7 = _mm_srai_epi32(s1_26_5, DCT_CONST_BITS);
const __m128i s1_27_6 = _mm_srai_epi32(s1_27_4, DCT_CONST_BITS);
const __m128i s1_27_7 = _mm_srai_epi32(s1_27_5, DCT_CONST_BITS);
const __m128i s1_28_6 = _mm_srai_epi32(s1_28_4, DCT_CONST_BITS);
const __m128i s1_28_7 = _mm_srai_epi32(s1_28_5, DCT_CONST_BITS);
const __m128i s1_29_6 = _mm_srai_epi32(s1_29_4, DCT_CONST_BITS);
const __m128i s1_29_7 = _mm_srai_epi32(s1_29_5, DCT_CONST_BITS);
// Combine
step1[18] = _mm_packs_epi32(s1_18_6, s1_18_7);
step1[19] = _mm_packs_epi32(s1_19_6, s1_19_7);
step1[20] = _mm_packs_epi32(s1_20_6, s1_20_7);
step1[21] = _mm_packs_epi32(s1_21_6, s1_21_7);
step1[26] = _mm_packs_epi32(s1_26_6, s1_26_7);
step1[27] = _mm_packs_epi32(s1_27_6, s1_27_7);
step1[28] = _mm_packs_epi32(s1_28_6, s1_28_7);
step1[29] = _mm_packs_epi32(s1_29_6, s1_29_7);
}
// Stage 5
{
step2[4] = _mm_add_epi16(step1[5], step3[4]);
step2[5] = _mm_sub_epi16(step3[4], step1[5]);
step2[6] = _mm_sub_epi16(step3[7], step1[6]);
step2[7] = _mm_add_epi16(step1[6], step3[7]);
}
{
const __m128i out_00_0 = _mm_unpacklo_epi16(step1[0], step1[1]);
const __m128i out_00_1 = _mm_unpackhi_epi16(step1[0], step1[1]);
const __m128i out_08_0 = _mm_unpacklo_epi16(step1[2], step1[3]);
const __m128i out_08_1 = _mm_unpackhi_epi16(step1[2], step1[3]);
const __m128i out_00_2 = _mm_madd_epi16(out_00_0, k__cospi_p16_p16);
const __m128i out_00_3 = _mm_madd_epi16(out_00_1, k__cospi_p16_p16);
const __m128i out_16_2 = _mm_madd_epi16(out_00_0, k__cospi_p16_m16);
const __m128i out_16_3 = _mm_madd_epi16(out_00_1, k__cospi_p16_m16);
const __m128i out_08_2 = _mm_madd_epi16(out_08_0, k__cospi_p24_p08);
const __m128i out_08_3 = _mm_madd_epi16(out_08_1, k__cospi_p24_p08);
const __m128i out_24_2 = _mm_madd_epi16(out_08_0, k__cospi_m08_p24);
const __m128i out_24_3 = _mm_madd_epi16(out_08_1, k__cospi_m08_p24);
// dct_const_round_shift
const __m128i out_00_4 = _mm_add_epi32(out_00_2, k__DCT_CONST_ROUNDING);
const __m128i out_00_5 = _mm_add_epi32(out_00_3, k__DCT_CONST_ROUNDING);
const __m128i out_16_4 = _mm_add_epi32(out_16_2, k__DCT_CONST_ROUNDING);
const __m128i out_16_5 = _mm_add_epi32(out_16_3, k__DCT_CONST_ROUNDING);
const __m128i out_08_4 = _mm_add_epi32(out_08_2, k__DCT_CONST_ROUNDING);
const __m128i out_08_5 = _mm_add_epi32(out_08_3, k__DCT_CONST_ROUNDING);
const __m128i out_24_4 = _mm_add_epi32(out_24_2, k__DCT_CONST_ROUNDING);
const __m128i out_24_5 = _mm_add_epi32(out_24_3, k__DCT_CONST_ROUNDING);
const __m128i out_00_6 = _mm_srai_epi32(out_00_4, DCT_CONST_BITS);
const __m128i out_00_7 = _mm_srai_epi32(out_00_5, DCT_CONST_BITS);
const __m128i out_16_6 = _mm_srai_epi32(out_16_4, DCT_CONST_BITS);
const __m128i out_16_7 = _mm_srai_epi32(out_16_5, DCT_CONST_BITS);
const __m128i out_08_6 = _mm_srai_epi32(out_08_4, DCT_CONST_BITS);
const __m128i out_08_7 = _mm_srai_epi32(out_08_5, DCT_CONST_BITS);
const __m128i out_24_6 = _mm_srai_epi32(out_24_4, DCT_CONST_BITS);
const __m128i out_24_7 = _mm_srai_epi32(out_24_5, DCT_CONST_BITS);
// Combine
out[ 0] = _mm_packs_epi32(out_00_6, out_00_7);
out[16] = _mm_packs_epi32(out_16_6, out_16_7);
out[ 8] = _mm_packs_epi32(out_08_6, out_08_7);
out[24] = _mm_packs_epi32(out_24_6, out_24_7);
}
{
const __m128i s2_09_0 = _mm_unpacklo_epi16(step1[ 9], step1[14]);
const __m128i s2_09_1 = _mm_unpackhi_epi16(step1[ 9], step1[14]);
const __m128i s2_10_0 = _mm_unpacklo_epi16(step1[10], step1[13]);
const __m128i s2_10_1 = _mm_unpackhi_epi16(step1[10], step1[13]);
const __m128i s2_09_2 = _mm_madd_epi16(s2_09_0, k__cospi_m08_p24);
const __m128i s2_09_3 = _mm_madd_epi16(s2_09_1, k__cospi_m08_p24);
const __m128i s2_10_2 = _mm_madd_epi16(s2_10_0, k__cospi_m24_m08);
const __m128i s2_10_3 = _mm_madd_epi16(s2_10_1, k__cospi_m24_m08);
const __m128i s2_13_2 = _mm_madd_epi16(s2_10_0, k__cospi_m08_p24);
const __m128i s2_13_3 = _mm_madd_epi16(s2_10_1, k__cospi_m08_p24);
const __m128i s2_14_2 = _mm_madd_epi16(s2_09_0, k__cospi_p24_p08);
const __m128i s2_14_3 = _mm_madd_epi16(s2_09_1, k__cospi_p24_p08);
// dct_const_round_shift
const __m128i s2_09_4 = _mm_add_epi32(s2_09_2, k__DCT_CONST_ROUNDING);
const __m128i s2_09_5 = _mm_add_epi32(s2_09_3, k__DCT_CONST_ROUNDING);
const __m128i s2_10_4 = _mm_add_epi32(s2_10_2, k__DCT_CONST_ROUNDING);
const __m128i s2_10_5 = _mm_add_epi32(s2_10_3, k__DCT_CONST_ROUNDING);
const __m128i s2_13_4 = _mm_add_epi32(s2_13_2, k__DCT_CONST_ROUNDING);
const __m128i s2_13_5 = _mm_add_epi32(s2_13_3, k__DCT_CONST_ROUNDING);
const __m128i s2_14_4 = _mm_add_epi32(s2_14_2, k__DCT_CONST_ROUNDING);
const __m128i s2_14_5 = _mm_add_epi32(s2_14_3, k__DCT_CONST_ROUNDING);
const __m128i s2_09_6 = _mm_srai_epi32(s2_09_4, DCT_CONST_BITS);
const __m128i s2_09_7 = _mm_srai_epi32(s2_09_5, DCT_CONST_BITS);
const __m128i s2_10_6 = _mm_srai_epi32(s2_10_4, DCT_CONST_BITS);
const __m128i s2_10_7 = _mm_srai_epi32(s2_10_5, DCT_CONST_BITS);
const __m128i s2_13_6 = _mm_srai_epi32(s2_13_4, DCT_CONST_BITS);
const __m128i s2_13_7 = _mm_srai_epi32(s2_13_5, DCT_CONST_BITS);
const __m128i s2_14_6 = _mm_srai_epi32(s2_14_4, DCT_CONST_BITS);
const __m128i s2_14_7 = _mm_srai_epi32(s2_14_5, DCT_CONST_BITS);
// Combine
step2[ 9] = _mm_packs_epi32(s2_09_6, s2_09_7);
step2[10] = _mm_packs_epi32(s2_10_6, s2_10_7);
step2[13] = _mm_packs_epi32(s2_13_6, s2_13_7);
step2[14] = _mm_packs_epi32(s2_14_6, s2_14_7);
}
{
step2[16] = _mm_add_epi16(step1[19], step3[16]);
step2[17] = _mm_add_epi16(step1[18], step3[17]);
step2[18] = _mm_sub_epi16(step3[17], step1[18]);
step2[19] = _mm_sub_epi16(step3[16], step1[19]);
step2[20] = _mm_sub_epi16(step3[23], step1[20]);
step2[21] = _mm_sub_epi16(step3[22], step1[21]);
step2[22] = _mm_add_epi16(step1[21], step3[22]);
step2[23] = _mm_add_epi16(step1[20], step3[23]);
step2[24] = _mm_add_epi16(step1[27], step3[24]);
step2[25] = _mm_add_epi16(step1[26], step3[25]);
step2[26] = _mm_sub_epi16(step3[25], step1[26]);
step2[27] = _mm_sub_epi16(step3[24], step1[27]);
step2[28] = _mm_sub_epi16(step3[31], step1[28]);
step2[29] = _mm_sub_epi16(step3[30], step1[29]);
step2[30] = _mm_add_epi16(step1[29], step3[30]);
step2[31] = _mm_add_epi16(step1[28], step3[31]);
}
// Stage 6
{
const __m128i out_04_0 = _mm_unpacklo_epi16(step2[4], step2[7]);
const __m128i out_04_1 = _mm_unpackhi_epi16(step2[4], step2[7]);
const __m128i out_20_0 = _mm_unpacklo_epi16(step2[5], step2[6]);
const __m128i out_20_1 = _mm_unpackhi_epi16(step2[5], step2[6]);
const __m128i out_12_0 = _mm_unpacklo_epi16(step2[5], step2[6]);
const __m128i out_12_1 = _mm_unpackhi_epi16(step2[5], step2[6]);
const __m128i out_28_0 = _mm_unpacklo_epi16(step2[4], step2[7]);
const __m128i out_28_1 = _mm_unpackhi_epi16(step2[4], step2[7]);
const __m128i out_04_2 = _mm_madd_epi16(out_04_0, k__cospi_p28_p04);
const __m128i out_04_3 = _mm_madd_epi16(out_04_1, k__cospi_p28_p04);
const __m128i out_20_2 = _mm_madd_epi16(out_20_0, k__cospi_p12_p20);
const __m128i out_20_3 = _mm_madd_epi16(out_20_1, k__cospi_p12_p20);
const __m128i out_12_2 = _mm_madd_epi16(out_12_0, k__cospi_m20_p12);
const __m128i out_12_3 = _mm_madd_epi16(out_12_1, k__cospi_m20_p12);
const __m128i out_28_2 = _mm_madd_epi16(out_28_0, k__cospi_m04_p28);
const __m128i out_28_3 = _mm_madd_epi16(out_28_1, k__cospi_m04_p28);
// dct_const_round_shift
const __m128i out_04_4 = _mm_add_epi32(out_04_2, k__DCT_CONST_ROUNDING);
const __m128i out_04_5 = _mm_add_epi32(out_04_3, k__DCT_CONST_ROUNDING);
const __m128i out_20_4 = _mm_add_epi32(out_20_2, k__DCT_CONST_ROUNDING);
const __m128i out_20_5 = _mm_add_epi32(out_20_3, k__DCT_CONST_ROUNDING);
const __m128i out_12_4 = _mm_add_epi32(out_12_2, k__DCT_CONST_ROUNDING);
const __m128i out_12_5 = _mm_add_epi32(out_12_3, k__DCT_CONST_ROUNDING);
const __m128i out_28_4 = _mm_add_epi32(out_28_2, k__DCT_CONST_ROUNDING);
const __m128i out_28_5 = _mm_add_epi32(out_28_3, k__DCT_CONST_ROUNDING);
const __m128i out_04_6 = _mm_srai_epi32(out_04_4, DCT_CONST_BITS);
const __m128i out_04_7 = _mm_srai_epi32(out_04_5, DCT_CONST_BITS);
const __m128i out_20_6 = _mm_srai_epi32(out_20_4, DCT_CONST_BITS);
const __m128i out_20_7 = _mm_srai_epi32(out_20_5, DCT_CONST_BITS);
const __m128i out_12_6 = _mm_srai_epi32(out_12_4, DCT_CONST_BITS);
const __m128i out_12_7 = _mm_srai_epi32(out_12_5, DCT_CONST_BITS);
const __m128i out_28_6 = _mm_srai_epi32(out_28_4, DCT_CONST_BITS);
const __m128i out_28_7 = _mm_srai_epi32(out_28_5, DCT_CONST_BITS);
// Combine
out[ 4] = _mm_packs_epi32(out_04_6, out_04_7);
out[20] = _mm_packs_epi32(out_20_6, out_20_7);
out[12] = _mm_packs_epi32(out_12_6, out_12_7);
out[28] = _mm_packs_epi32(out_28_6, out_28_7);
}
{
step3[ 8] = _mm_add_epi16(step2[ 9], step1[ 8]);
step3[ 9] = _mm_sub_epi16(step1[ 8], step2[ 9]);
step3[10] = _mm_sub_epi16(step1[11], step2[10]);
step3[11] = _mm_add_epi16(step2[10], step1[11]);
step3[12] = _mm_add_epi16(step2[13], step1[12]);
step3[13] = _mm_sub_epi16(step1[12], step2[13]);
step3[14] = _mm_sub_epi16(step1[15], step2[14]);
step3[15] = _mm_add_epi16(step2[14], step1[15]);
}
{
const __m128i s3_17_0 = _mm_unpacklo_epi16(step2[17], step2[30]);
const __m128i s3_17_1 = _mm_unpackhi_epi16(step2[17], step2[30]);
const __m128i s3_18_0 = _mm_unpacklo_epi16(step2[18], step2[29]);
const __m128i s3_18_1 = _mm_unpackhi_epi16(step2[18], step2[29]);
const __m128i s3_21_0 = _mm_unpacklo_epi16(step2[21], step2[26]);
const __m128i s3_21_1 = _mm_unpackhi_epi16(step2[21], step2[26]);
const __m128i s3_22_0 = _mm_unpacklo_epi16(step2[22], step2[25]);
const __m128i s3_22_1 = _mm_unpackhi_epi16(step2[22], step2[25]);
const __m128i s3_17_2 = _mm_madd_epi16(s3_17_0, k__cospi_m04_p28);
const __m128i s3_17_3 = _mm_madd_epi16(s3_17_1, k__cospi_m04_p28);
const __m128i s3_18_2 = _mm_madd_epi16(s3_18_0, k__cospi_m28_m04);
const __m128i s3_18_3 = _mm_madd_epi16(s3_18_1, k__cospi_m28_m04);
const __m128i s3_21_2 = _mm_madd_epi16(s3_21_0, k__cospi_m20_p12);
const __m128i s3_21_3 = _mm_madd_epi16(s3_21_1, k__cospi_m20_p12);
const __m128i s3_22_2 = _mm_madd_epi16(s3_22_0, k__cospi_m12_m20);
const __m128i s3_22_3 = _mm_madd_epi16(s3_22_1, k__cospi_m12_m20);
const __m128i s3_25_2 = _mm_madd_epi16(s3_22_0, k__cospi_m20_p12);
const __m128i s3_25_3 = _mm_madd_epi16(s3_22_1, k__cospi_m20_p12);
const __m128i s3_26_2 = _mm_madd_epi16(s3_21_0, k__cospi_p12_p20);
const __m128i s3_26_3 = _mm_madd_epi16(s3_21_1, k__cospi_p12_p20);
const __m128i s3_29_2 = _mm_madd_epi16(s3_18_0, k__cospi_m04_p28);
const __m128i s3_29_3 = _mm_madd_epi16(s3_18_1, k__cospi_m04_p28);
const __m128i s3_30_2 = _mm_madd_epi16(s3_17_0, k__cospi_p28_p04);
const __m128i s3_30_3 = _mm_madd_epi16(s3_17_1, k__cospi_p28_p04);
// dct_const_round_shift
const __m128i s3_17_4 = _mm_add_epi32(s3_17_2, k__DCT_CONST_ROUNDING);
const __m128i s3_17_5 = _mm_add_epi32(s3_17_3, k__DCT_CONST_ROUNDING);
const __m128i s3_18_4 = _mm_add_epi32(s3_18_2, k__DCT_CONST_ROUNDING);
const __m128i s3_18_5 = _mm_add_epi32(s3_18_3, k__DCT_CONST_ROUNDING);
const __m128i s3_21_4 = _mm_add_epi32(s3_21_2, k__DCT_CONST_ROUNDING);
const __m128i s3_21_5 = _mm_add_epi32(s3_21_3, k__DCT_CONST_ROUNDING);
const __m128i s3_22_4 = _mm_add_epi32(s3_22_2, k__DCT_CONST_ROUNDING);
const __m128i s3_22_5 = _mm_add_epi32(s3_22_3, k__DCT_CONST_ROUNDING);
const __m128i s3_17_6 = _mm_srai_epi32(s3_17_4, DCT_CONST_BITS);
const __m128i s3_17_7 = _mm_srai_epi32(s3_17_5, DCT_CONST_BITS);
const __m128i s3_18_6 = _mm_srai_epi32(s3_18_4, DCT_CONST_BITS);
const __m128i s3_18_7 = _mm_srai_epi32(s3_18_5, DCT_CONST_BITS);
const __m128i s3_21_6 = _mm_srai_epi32(s3_21_4, DCT_CONST_BITS);
const __m128i s3_21_7 = _mm_srai_epi32(s3_21_5, DCT_CONST_BITS);
const __m128i s3_22_6 = _mm_srai_epi32(s3_22_4, DCT_CONST_BITS);
const __m128i s3_22_7 = _mm_srai_epi32(s3_22_5, DCT_CONST_BITS);
const __m128i s3_25_4 = _mm_add_epi32(s3_25_2, k__DCT_CONST_ROUNDING);
const __m128i s3_25_5 = _mm_add_epi32(s3_25_3, k__DCT_CONST_ROUNDING);
const __m128i s3_26_4 = _mm_add_epi32(s3_26_2, k__DCT_CONST_ROUNDING);
const __m128i s3_26_5 = _mm_add_epi32(s3_26_3, k__DCT_CONST_ROUNDING);
const __m128i s3_29_4 = _mm_add_epi32(s3_29_2, k__DCT_CONST_ROUNDING);
const __m128i s3_29_5 = _mm_add_epi32(s3_29_3, k__DCT_CONST_ROUNDING);
const __m128i s3_30_4 = _mm_add_epi32(s3_30_2, k__DCT_CONST_ROUNDING);
const __m128i s3_30_5 = _mm_add_epi32(s3_30_3, k__DCT_CONST_ROUNDING);
const __m128i s3_25_6 = _mm_srai_epi32(s3_25_4, DCT_CONST_BITS);
const __m128i s3_25_7 = _mm_srai_epi32(s3_25_5, DCT_CONST_BITS);
const __m128i s3_26_6 = _mm_srai_epi32(s3_26_4, DCT_CONST_BITS);
const __m128i s3_26_7 = _mm_srai_epi32(s3_26_5, DCT_CONST_BITS);
const __m128i s3_29_6 = _mm_srai_epi32(s3_29_4, DCT_CONST_BITS);
const __m128i s3_29_7 = _mm_srai_epi32(s3_29_5, DCT_CONST_BITS);
const __m128i s3_30_6 = _mm_srai_epi32(s3_30_4, DCT_CONST_BITS);
const __m128i s3_30_7 = _mm_srai_epi32(s3_30_5, DCT_CONST_BITS);
// Combine
step3[17] = _mm_packs_epi32(s3_17_6, s3_17_7);
step3[18] = _mm_packs_epi32(s3_18_6, s3_18_7);
step3[21] = _mm_packs_epi32(s3_21_6, s3_21_7);
step3[22] = _mm_packs_epi32(s3_22_6, s3_22_7);
// Combine
step3[25] = _mm_packs_epi32(s3_25_6, s3_25_7);
step3[26] = _mm_packs_epi32(s3_26_6, s3_26_7);
step3[29] = _mm_packs_epi32(s3_29_6, s3_29_7);
step3[30] = _mm_packs_epi32(s3_30_6, s3_30_7);
}
// Stage 7
{
const __m128i out_02_0 = _mm_unpacklo_epi16(step3[ 8], step3[15]);
const __m128i out_02_1 = _mm_unpackhi_epi16(step3[ 8], step3[15]);
const __m128i out_18_0 = _mm_unpacklo_epi16(step3[ 9], step3[14]);
const __m128i out_18_1 = _mm_unpackhi_epi16(step3[ 9], step3[14]);
const __m128i out_10_0 = _mm_unpacklo_epi16(step3[10], step3[13]);
const __m128i out_10_1 = _mm_unpackhi_epi16(step3[10], step3[13]);
const __m128i out_26_0 = _mm_unpacklo_epi16(step3[11], step3[12]);
const __m128i out_26_1 = _mm_unpackhi_epi16(step3[11], step3[12]);
const __m128i out_02_2 = _mm_madd_epi16(out_02_0, k__cospi_p30_p02);
const __m128i out_02_3 = _mm_madd_epi16(out_02_1, k__cospi_p30_p02);
const __m128i out_18_2 = _mm_madd_epi16(out_18_0, k__cospi_p14_p18);
const __m128i out_18_3 = _mm_madd_epi16(out_18_1, k__cospi_p14_p18);
const __m128i out_10_2 = _mm_madd_epi16(out_10_0, k__cospi_p22_p10);
const __m128i out_10_3 = _mm_madd_epi16(out_10_1, k__cospi_p22_p10);
const __m128i out_26_2 = _mm_madd_epi16(out_26_0, k__cospi_p06_p26);
const __m128i out_26_3 = _mm_madd_epi16(out_26_1, k__cospi_p06_p26);
const __m128i out_06_2 = _mm_madd_epi16(out_26_0, k__cospi_m26_p06);
const __m128i out_06_3 = _mm_madd_epi16(out_26_1, k__cospi_m26_p06);
const __m128i out_22_2 = _mm_madd_epi16(out_10_0, k__cospi_m10_p22);
const __m128i out_22_3 = _mm_madd_epi16(out_10_1, k__cospi_m10_p22);
const __m128i out_14_2 = _mm_madd_epi16(out_18_0, k__cospi_m18_p14);
const __m128i out_14_3 = _mm_madd_epi16(out_18_1, k__cospi_m18_p14);
const __m128i out_30_2 = _mm_madd_epi16(out_02_0, k__cospi_m02_p30);
const __m128i out_30_3 = _mm_madd_epi16(out_02_1, k__cospi_m02_p30);
// dct_const_round_shift
const __m128i out_02_4 = _mm_add_epi32(out_02_2, k__DCT_CONST_ROUNDING);
const __m128i out_02_5 = _mm_add_epi32(out_02_3, k__DCT_CONST_ROUNDING);
const __m128i out_18_4 = _mm_add_epi32(out_18_2, k__DCT_CONST_ROUNDING);
const __m128i out_18_5 = _mm_add_epi32(out_18_3, k__DCT_CONST_ROUNDING);
const __m128i out_10_4 = _mm_add_epi32(out_10_2, k__DCT_CONST_ROUNDING);
const __m128i out_10_5 = _mm_add_epi32(out_10_3, k__DCT_CONST_ROUNDING);
const __m128i out_26_4 = _mm_add_epi32(out_26_2, k__DCT_CONST_ROUNDING);
const __m128i out_26_5 = _mm_add_epi32(out_26_3, k__DCT_CONST_ROUNDING);
const __m128i out_06_4 = _mm_add_epi32(out_06_2, k__DCT_CONST_ROUNDING);
const __m128i out_06_5 = _mm_add_epi32(out_06_3, k__DCT_CONST_ROUNDING);
const __m128i out_22_4 = _mm_add_epi32(out_22_2, k__DCT_CONST_ROUNDING);
const __m128i out_22_5 = _mm_add_epi32(out_22_3, k__DCT_CONST_ROUNDING);
const __m128i out_14_4 = _mm_add_epi32(out_14_2, k__DCT_CONST_ROUNDING);
const __m128i out_14_5 = _mm_add_epi32(out_14_3, k__DCT_CONST_ROUNDING);
const __m128i out_30_4 = _mm_add_epi32(out_30_2, k__DCT_CONST_ROUNDING);
const __m128i out_30_5 = _mm_add_epi32(out_30_3, k__DCT_CONST_ROUNDING);
const __m128i out_02_6 = _mm_srai_epi32(out_02_4, DCT_CONST_BITS);
const __m128i out_02_7 = _mm_srai_epi32(out_02_5, DCT_CONST_BITS);
const __m128i out_18_6 = _mm_srai_epi32(out_18_4, DCT_CONST_BITS);
const __m128i out_18_7 = _mm_srai_epi32(out_18_5, DCT_CONST_BITS);
const __m128i out_10_6 = _mm_srai_epi32(out_10_4, DCT_CONST_BITS);
const __m128i out_10_7 = _mm_srai_epi32(out_10_5, DCT_CONST_BITS);
const __m128i out_26_6 = _mm_srai_epi32(out_26_4, DCT_CONST_BITS);
const __m128i out_26_7 = _mm_srai_epi32(out_26_5, DCT_CONST_BITS);
const __m128i out_06_6 = _mm_srai_epi32(out_06_4, DCT_CONST_BITS);
const __m128i out_06_7 = _mm_srai_epi32(out_06_5, DCT_CONST_BITS);
const __m128i out_22_6 = _mm_srai_epi32(out_22_4, DCT_CONST_BITS);
const __m128i out_22_7 = _mm_srai_epi32(out_22_5, DCT_CONST_BITS);
const __m128i out_14_6 = _mm_srai_epi32(out_14_4, DCT_CONST_BITS);
const __m128i out_14_7 = _mm_srai_epi32(out_14_5, DCT_CONST_BITS);
const __m128i out_30_6 = _mm_srai_epi32(out_30_4, DCT_CONST_BITS);
const __m128i out_30_7 = _mm_srai_epi32(out_30_5, DCT_CONST_BITS);
// Combine
out[ 2] = _mm_packs_epi32(out_02_6, out_02_7);
out[18] = _mm_packs_epi32(out_18_6, out_18_7);
out[10] = _mm_packs_epi32(out_10_6, out_10_7);
out[26] = _mm_packs_epi32(out_26_6, out_26_7);
out[ 6] = _mm_packs_epi32(out_06_6, out_06_7);
out[22] = _mm_packs_epi32(out_22_6, out_22_7);
out[14] = _mm_packs_epi32(out_14_6, out_14_7);
out[30] = _mm_packs_epi32(out_30_6, out_30_7);
}
{
step1[16] = _mm_add_epi16(step3[17], step2[16]);
step1[17] = _mm_sub_epi16(step2[16], step3[17]);
step1[18] = _mm_sub_epi16(step2[19], step3[18]);
step1[19] = _mm_add_epi16(step3[18], step2[19]);
step1[20] = _mm_add_epi16(step3[21], step2[20]);
step1[21] = _mm_sub_epi16(step2[20], step3[21]);
step1[22] = _mm_sub_epi16(step2[23], step3[22]);
step1[23] = _mm_add_epi16(step3[22], step2[23]);
step1[24] = _mm_add_epi16(step3[25], step2[24]);
step1[25] = _mm_sub_epi16(step2[24], step3[25]);
step1[26] = _mm_sub_epi16(step2[27], step3[26]);
step1[27] = _mm_add_epi16(step3[26], step2[27]);
step1[28] = _mm_add_epi16(step3[29], step2[28]);
step1[29] = _mm_sub_epi16(step2[28], step3[29]);
step1[30] = _mm_sub_epi16(step2[31], step3[30]);
step1[31] = _mm_add_epi16(step3[30], step2[31]);
}
// Final stage --- outputs indices are bit-reversed.
{
const __m128i out_01_0 = _mm_unpacklo_epi16(step1[16], step1[31]);
const __m128i out_01_1 = _mm_unpackhi_epi16(step1[16], step1[31]);
const __m128i out_17_0 = _mm_unpacklo_epi16(step1[17], step1[30]);
const __m128i out_17_1 = _mm_unpackhi_epi16(step1[17], step1[30]);
const __m128i out_09_0 = _mm_unpacklo_epi16(step1[18], step1[29]);
const __m128i out_09_1 = _mm_unpackhi_epi16(step1[18], step1[29]);
const __m128i out_25_0 = _mm_unpacklo_epi16(step1[19], step1[28]);
const __m128i out_25_1 = _mm_unpackhi_epi16(step1[19], step1[28]);
const __m128i out_01_2 = _mm_madd_epi16(out_01_0, k__cospi_p31_p01);
const __m128i out_01_3 = _mm_madd_epi16(out_01_1, k__cospi_p31_p01);
const __m128i out_17_2 = _mm_madd_epi16(out_17_0, k__cospi_p15_p17);
const __m128i out_17_3 = _mm_madd_epi16(out_17_1, k__cospi_p15_p17);
const __m128i out_09_2 = _mm_madd_epi16(out_09_0, k__cospi_p23_p09);
const __m128i out_09_3 = _mm_madd_epi16(out_09_1, k__cospi_p23_p09);
const __m128i out_25_2 = _mm_madd_epi16(out_25_0, k__cospi_p07_p25);
const __m128i out_25_3 = _mm_madd_epi16(out_25_1, k__cospi_p07_p25);
const __m128i out_07_2 = _mm_madd_epi16(out_25_0, k__cospi_m25_p07);
const __m128i out_07_3 = _mm_madd_epi16(out_25_1, k__cospi_m25_p07);
const __m128i out_23_2 = _mm_madd_epi16(out_09_0, k__cospi_m09_p23);
const __m128i out_23_3 = _mm_madd_epi16(out_09_1, k__cospi_m09_p23);
const __m128i out_15_2 = _mm_madd_epi16(out_17_0, k__cospi_m17_p15);
const __m128i out_15_3 = _mm_madd_epi16(out_17_1, k__cospi_m17_p15);
const __m128i out_31_2 = _mm_madd_epi16(out_01_0, k__cospi_m01_p31);
const __m128i out_31_3 = _mm_madd_epi16(out_01_1, k__cospi_m01_p31);
// dct_const_round_shift
const __m128i out_01_4 = _mm_add_epi32(out_01_2, k__DCT_CONST_ROUNDING);
const __m128i out_01_5 = _mm_add_epi32(out_01_3, k__DCT_CONST_ROUNDING);
const __m128i out_17_4 = _mm_add_epi32(out_17_2, k__DCT_CONST_ROUNDING);
const __m128i out_17_5 = _mm_add_epi32(out_17_3, k__DCT_CONST_ROUNDING);
const __m128i out_09_4 = _mm_add_epi32(out_09_2, k__DCT_CONST_ROUNDING);
const __m128i out_09_5 = _mm_add_epi32(out_09_3, k__DCT_CONST_ROUNDING);
const __m128i out_25_4 = _mm_add_epi32(out_25_2, k__DCT_CONST_ROUNDING);
const __m128i out_25_5 = _mm_add_epi32(out_25_3, k__DCT_CONST_ROUNDING);
const __m128i out_07_4 = _mm_add_epi32(out_07_2, k__DCT_CONST_ROUNDING);
const __m128i out_07_5 = _mm_add_epi32(out_07_3, k__DCT_CONST_ROUNDING);
const __m128i out_23_4 = _mm_add_epi32(out_23_2, k__DCT_CONST_ROUNDING);
const __m128i out_23_5 = _mm_add_epi32(out_23_3, k__DCT_CONST_ROUNDING);
const __m128i out_15_4 = _mm_add_epi32(out_15_2, k__DCT_CONST_ROUNDING);
const __m128i out_15_5 = _mm_add_epi32(out_15_3, k__DCT_CONST_ROUNDING);
const __m128i out_31_4 = _mm_add_epi32(out_31_2, k__DCT_CONST_ROUNDING);
const __m128i out_31_5 = _mm_add_epi32(out_31_3, k__DCT_CONST_ROUNDING);
const __m128i out_01_6 = _mm_srai_epi32(out_01_4, DCT_CONST_BITS);
const __m128i out_01_7 = _mm_srai_epi32(out_01_5, DCT_CONST_BITS);
const __m128i out_17_6 = _mm_srai_epi32(out_17_4, DCT_CONST_BITS);
const __m128i out_17_7 = _mm_srai_epi32(out_17_5, DCT_CONST_BITS);
const __m128i out_09_6 = _mm_srai_epi32(out_09_4, DCT_CONST_BITS);
const __m128i out_09_7 = _mm_srai_epi32(out_09_5, DCT_CONST_BITS);
const __m128i out_25_6 = _mm_srai_epi32(out_25_4, DCT_CONST_BITS);
const __m128i out_25_7 = _mm_srai_epi32(out_25_5, DCT_CONST_BITS);
const __m128i out_07_6 = _mm_srai_epi32(out_07_4, DCT_CONST_BITS);
const __m128i out_07_7 = _mm_srai_epi32(out_07_5, DCT_CONST_BITS);
const __m128i out_23_6 = _mm_srai_epi32(out_23_4, DCT_CONST_BITS);
const __m128i out_23_7 = _mm_srai_epi32(out_23_5, DCT_CONST_BITS);
const __m128i out_15_6 = _mm_srai_epi32(out_15_4, DCT_CONST_BITS);
const __m128i out_15_7 = _mm_srai_epi32(out_15_5, DCT_CONST_BITS);
const __m128i out_31_6 = _mm_srai_epi32(out_31_4, DCT_CONST_BITS);
const __m128i out_31_7 = _mm_srai_epi32(out_31_5, DCT_CONST_BITS);
// Combine
out[ 1] = _mm_packs_epi32(out_01_6, out_01_7);
out[17] = _mm_packs_epi32(out_17_6, out_17_7);
out[ 9] = _mm_packs_epi32(out_09_6, out_09_7);
out[25] = _mm_packs_epi32(out_25_6, out_25_7);
out[ 7] = _mm_packs_epi32(out_07_6, out_07_7);
out[23] = _mm_packs_epi32(out_23_6, out_23_7);
out[15] = _mm_packs_epi32(out_15_6, out_15_7);
out[31] = _mm_packs_epi32(out_31_6, out_31_7);
}
{
const __m128i out_05_0 = _mm_unpacklo_epi16(step1[20], step1[27]);
const __m128i out_05_1 = _mm_unpackhi_epi16(step1[20], step1[27]);
const __m128i out_21_0 = _mm_unpacklo_epi16(step1[21], step1[26]);
const __m128i out_21_1 = _mm_unpackhi_epi16(step1[21], step1[26]);
const __m128i out_13_0 = _mm_unpacklo_epi16(step1[22], step1[25]);
const __m128i out_13_1 = _mm_unpackhi_epi16(step1[22], step1[25]);
const __m128i out_29_0 = _mm_unpacklo_epi16(step1[23], step1[24]);
const __m128i out_29_1 = _mm_unpackhi_epi16(step1[23], step1[24]);
const __m128i out_05_2 = _mm_madd_epi16(out_05_0, k__cospi_p27_p05);
const __m128i out_05_3 = _mm_madd_epi16(out_05_1, k__cospi_p27_p05);
const __m128i out_21_2 = _mm_madd_epi16(out_21_0, k__cospi_p11_p21);
const __m128i out_21_3 = _mm_madd_epi16(out_21_1, k__cospi_p11_p21);
const __m128i out_13_2 = _mm_madd_epi16(out_13_0, k__cospi_p19_p13);
const __m128i out_13_3 = _mm_madd_epi16(out_13_1, k__cospi_p19_p13);
const __m128i out_29_2 = _mm_madd_epi16(out_29_0, k__cospi_p03_p29);
const __m128i out_29_3 = _mm_madd_epi16(out_29_1, k__cospi_p03_p29);
const __m128i out_03_2 = _mm_madd_epi16(out_29_0, k__cospi_m29_p03);
const __m128i out_03_3 = _mm_madd_epi16(out_29_1, k__cospi_m29_p03);
const __m128i out_19_2 = _mm_madd_epi16(out_13_0, k__cospi_m13_p19);
const __m128i out_19_3 = _mm_madd_epi16(out_13_1, k__cospi_m13_p19);
const __m128i out_11_2 = _mm_madd_epi16(out_21_0, k__cospi_m21_p11);
const __m128i out_11_3 = _mm_madd_epi16(out_21_1, k__cospi_m21_p11);
const __m128i out_27_2 = _mm_madd_epi16(out_05_0, k__cospi_m05_p27);
const __m128i out_27_3 = _mm_madd_epi16(out_05_1, k__cospi_m05_p27);
// dct_const_round_shift
const __m128i out_05_4 = _mm_add_epi32(out_05_2, k__DCT_CONST_ROUNDING);
const __m128i out_05_5 = _mm_add_epi32(out_05_3, k__DCT_CONST_ROUNDING);
const __m128i out_21_4 = _mm_add_epi32(out_21_2, k__DCT_CONST_ROUNDING);
const __m128i out_21_5 = _mm_add_epi32(out_21_3, k__DCT_CONST_ROUNDING);
const __m128i out_13_4 = _mm_add_epi32(out_13_2, k__DCT_CONST_ROUNDING);
const __m128i out_13_5 = _mm_add_epi32(out_13_3, k__DCT_CONST_ROUNDING);
const __m128i out_29_4 = _mm_add_epi32(out_29_2, k__DCT_CONST_ROUNDING);
const __m128i out_29_5 = _mm_add_epi32(out_29_3, k__DCT_CONST_ROUNDING);
const __m128i out_03_4 = _mm_add_epi32(out_03_2, k__DCT_CONST_ROUNDING);
const __m128i out_03_5 = _mm_add_epi32(out_03_3, k__DCT_CONST_ROUNDING);
const __m128i out_19_4 = _mm_add_epi32(out_19_2, k__DCT_CONST_ROUNDING);
const __m128i out_19_5 = _mm_add_epi32(out_19_3, k__DCT_CONST_ROUNDING);
const __m128i out_11_4 = _mm_add_epi32(out_11_2, k__DCT_CONST_ROUNDING);
const __m128i out_11_5 = _mm_add_epi32(out_11_3, k__DCT_CONST_ROUNDING);
const __m128i out_27_4 = _mm_add_epi32(out_27_2, k__DCT_CONST_ROUNDING);
const __m128i out_27_5 = _mm_add_epi32(out_27_3, k__DCT_CONST_ROUNDING);
const __m128i out_05_6 = _mm_srai_epi32(out_05_4, DCT_CONST_BITS);
const __m128i out_05_7 = _mm_srai_epi32(out_05_5, DCT_CONST_BITS);
const __m128i out_21_6 = _mm_srai_epi32(out_21_4, DCT_CONST_BITS);
const __m128i out_21_7 = _mm_srai_epi32(out_21_5, DCT_CONST_BITS);
const __m128i out_13_6 = _mm_srai_epi32(out_13_4, DCT_CONST_BITS);
const __m128i out_13_7 = _mm_srai_epi32(out_13_5, DCT_CONST_BITS);
const __m128i out_29_6 = _mm_srai_epi32(out_29_4, DCT_CONST_BITS);
const __m128i out_29_7 = _mm_srai_epi32(out_29_5, DCT_CONST_BITS);
const __m128i out_03_6 = _mm_srai_epi32(out_03_4, DCT_CONST_BITS);
const __m128i out_03_7 = _mm_srai_epi32(out_03_5, DCT_CONST_BITS);
const __m128i out_19_6 = _mm_srai_epi32(out_19_4, DCT_CONST_BITS);
const __m128i out_19_7 = _mm_srai_epi32(out_19_5, DCT_CONST_BITS);
const __m128i out_11_6 = _mm_srai_epi32(out_11_4, DCT_CONST_BITS);
const __m128i out_11_7 = _mm_srai_epi32(out_11_5, DCT_CONST_BITS);
const __m128i out_27_6 = _mm_srai_epi32(out_27_4, DCT_CONST_BITS);
const __m128i out_27_7 = _mm_srai_epi32(out_27_5, DCT_CONST_BITS);
// Combine
out[ 5] = _mm_packs_epi32(out_05_6, out_05_7);
out[21] = _mm_packs_epi32(out_21_6, out_21_7);
out[13] = _mm_packs_epi32(out_13_6, out_13_7);
out[29] = _mm_packs_epi32(out_29_6, out_29_7);
out[ 3] = _mm_packs_epi32(out_03_6, out_03_7);
out[19] = _mm_packs_epi32(out_19_6, out_19_7);
out[11] = _mm_packs_epi32(out_11_6, out_11_7);
out[27] = _mm_packs_epi32(out_27_6, out_27_7);
}
// Transpose the results, do it as four 8x8 transposes.
{
int transpose_block;
int16_t *output;
if (0 == pass) {
output = &intermediate[column_start * 32];
} else {
output = &output_org[column_start * 32];
}
for (transpose_block = 0; transpose_block < 4; ++transpose_block) {
__m128i *this_out = &out[8 * transpose_block];
// 00 01 02 03 04 05 06 07
// 10 11 12 13 14 15 16 17
// 20 21 22 23 24 25 26 27
// 30 31 32 33 34 35 36 37
// 40 41 42 43 44 45 46 47
// 50 51 52 53 54 55 56 57
// 60 61 62 63 64 65 66 67
// 70 71 72 73 74 75 76 77
const __m128i tr0_0 = _mm_unpacklo_epi16(this_out[0], this_out[1]);
const __m128i tr0_1 = _mm_unpacklo_epi16(this_out[2], this_out[3]);
const __m128i tr0_2 = _mm_unpackhi_epi16(this_out[0], this_out[1]);
const __m128i tr0_3 = _mm_unpackhi_epi16(this_out[2], this_out[3]);
const __m128i tr0_4 = _mm_unpacklo_epi16(this_out[4], this_out[5]);
const __m128i tr0_5 = _mm_unpacklo_epi16(this_out[6], this_out[7]);
const __m128i tr0_6 = _mm_unpackhi_epi16(this_out[4], this_out[5]);
const __m128i tr0_7 = _mm_unpackhi_epi16(this_out[6], this_out[7]);
// 00 10 01 11 02 12 03 13
// 20 30 21 31 22 32 23 33
// 04 14 05 15 06 16 07 17
// 24 34 25 35 26 36 27 37
// 40 50 41 51 42 52 43 53
// 60 70 61 71 62 72 63 73
// 54 54 55 55 56 56 57 57
// 64 74 65 75 66 76 67 77
const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1);
const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3);
const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1);
const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3);
const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5);
const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7);
const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5);
const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7);
// 00 10 20 30 01 11 21 31
// 40 50 60 70 41 51 61 71
// 02 12 22 32 03 13 23 33
// 42 52 62 72 43 53 63 73
// 04 14 24 34 05 15 21 36
// 44 54 64 74 45 55 61 76
// 06 16 26 36 07 17 27 37
// 46 56 66 76 47 57 67 77
__m128i tr2_0 = _mm_unpacklo_epi64(tr1_0, tr1_4);
__m128i tr2_1 = _mm_unpackhi_epi64(tr1_0, tr1_4);
__m128i tr2_2 = _mm_unpacklo_epi64(tr1_2, tr1_6);
__m128i tr2_3 = _mm_unpackhi_epi64(tr1_2, tr1_6);
__m128i tr2_4 = _mm_unpacklo_epi64(tr1_1, tr1_5);
__m128i tr2_5 = _mm_unpackhi_epi64(tr1_1, tr1_5);
__m128i tr2_6 = _mm_unpacklo_epi64(tr1_3, tr1_7);
__m128i tr2_7 = _mm_unpackhi_epi64(tr1_3, tr1_7);
// 00 10 20 30 40 50 60 70
// 01 11 21 31 41 51 61 71
// 02 12 22 32 42 52 62 72
// 03 13 23 33 43 53 63 73
// 04 14 24 34 44 54 64 74
// 05 15 25 35 45 55 65 75
// 06 16 26 36 46 56 66 76
// 07 17 27 37 47 57 67 77
if (0 == pass) {
// output[j] = (output[j] + 1 + (output[j] > 0)) >> 2;
// TODO(cd): see quality impact of only doing
// output[j] = (output[j] + 1) >> 2;
// which would remove the code between here ...
__m128i tr2_0_0 = _mm_cmpgt_epi16(tr2_0, kZero);
__m128i tr2_1_0 = _mm_cmpgt_epi16(tr2_1, kZero);
__m128i tr2_2_0 = _mm_cmpgt_epi16(tr2_2, kZero);
__m128i tr2_3_0 = _mm_cmpgt_epi16(tr2_3, kZero);
__m128i tr2_4_0 = _mm_cmpgt_epi16(tr2_4, kZero);
__m128i tr2_5_0 = _mm_cmpgt_epi16(tr2_5, kZero);
__m128i tr2_6_0 = _mm_cmpgt_epi16(tr2_6, kZero);
__m128i tr2_7_0 = _mm_cmpgt_epi16(tr2_7, kZero);
tr2_0 = _mm_sub_epi16(tr2_0, tr2_0_0);
tr2_1 = _mm_sub_epi16(tr2_1, tr2_1_0);
tr2_2 = _mm_sub_epi16(tr2_2, tr2_2_0);
tr2_3 = _mm_sub_epi16(tr2_3, tr2_3_0);
tr2_4 = _mm_sub_epi16(tr2_4, tr2_4_0);
tr2_5 = _mm_sub_epi16(tr2_5, tr2_5_0);
tr2_6 = _mm_sub_epi16(tr2_6, tr2_6_0);
tr2_7 = _mm_sub_epi16(tr2_7, tr2_7_0);
// ... and here.
// PS: also change code in vp9/encoder/vp9_dct.c
tr2_0 = _mm_add_epi16(tr2_0, kOne);
tr2_1 = _mm_add_epi16(tr2_1, kOne);
tr2_2 = _mm_add_epi16(tr2_2, kOne);
tr2_3 = _mm_add_epi16(tr2_3, kOne);
tr2_4 = _mm_add_epi16(tr2_4, kOne);
tr2_5 = _mm_add_epi16(tr2_5, kOne);
tr2_6 = _mm_add_epi16(tr2_6, kOne);
tr2_7 = _mm_add_epi16(tr2_7, kOne);
tr2_0 = _mm_srai_epi16(tr2_0, 2);
tr2_1 = _mm_srai_epi16(tr2_1, 2);
tr2_2 = _mm_srai_epi16(tr2_2, 2);
tr2_3 = _mm_srai_epi16(tr2_3, 2);
tr2_4 = _mm_srai_epi16(tr2_4, 2);
tr2_5 = _mm_srai_epi16(tr2_5, 2);
tr2_6 = _mm_srai_epi16(tr2_6, 2);
tr2_7 = _mm_srai_epi16(tr2_7, 2);
}
// Note: even though all these stores are aligned, using the aligned
// intrinsic make the code slightly slower.
_mm_storeu_si128((__m128i *)(output + 0 * 32), tr2_0);
_mm_storeu_si128((__m128i *)(output + 1 * 32), tr2_1);
_mm_storeu_si128((__m128i *)(output + 2 * 32), tr2_2);
_mm_storeu_si128((__m128i *)(output + 3 * 32), tr2_3);
_mm_storeu_si128((__m128i *)(output + 4 * 32), tr2_4);
_mm_storeu_si128((__m128i *)(output + 5 * 32), tr2_5);
_mm_storeu_si128((__m128i *)(output + 6 * 32), tr2_6);
_mm_storeu_si128((__m128i *)(output + 7 * 32), tr2_7);
// Process next 8x8
output += 8;
}
}
}
}
}