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/*
* Copyright (c) 2018, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AOM_DSP_X86_TXFM_COMMON_AVX2_H_
#define AOM_AOM_DSP_X86_TXFM_COMMON_AVX2_H_
#include <emmintrin.h>
#include "aom/aom_integer.h"
#include "aom_dsp/x86/synonyms.h"
#ifdef __cplusplus
extern "C" {
#endif
static INLINE __m256i pair_set_w16_epi16(int16_t a, int16_t b) {
return _mm256_set1_epi32(
(int32_t)(((uint16_t)(a)) | (((uint32_t)(b)) << 16)));
}
static INLINE void btf_16_w16_avx2(const __m256i w0, const __m256i w1,
__m256i *in0, __m256i *in1, const __m256i _r,
const int32_t cos_bit) {
__m256i t0 = _mm256_unpacklo_epi16(*in0, *in1);
__m256i t1 = _mm256_unpackhi_epi16(*in0, *in1);
__m256i u0 = _mm256_madd_epi16(t0, w0);
__m256i u1 = _mm256_madd_epi16(t1, w0);
__m256i v0 = _mm256_madd_epi16(t0, w1);
__m256i v1 = _mm256_madd_epi16(t1, w1);
__m256i a0 = _mm256_add_epi32(u0, _r);
__m256i a1 = _mm256_add_epi32(u1, _r);
__m256i b0 = _mm256_add_epi32(v0, _r);
__m256i b1 = _mm256_add_epi32(v1, _r);
__m256i c0 = _mm256_srai_epi32(a0, cos_bit);
__m256i c1 = _mm256_srai_epi32(a1, cos_bit);
__m256i d0 = _mm256_srai_epi32(b0, cos_bit);
__m256i d1 = _mm256_srai_epi32(b1, cos_bit);
*in0 = _mm256_packs_epi32(c0, c1);
*in1 = _mm256_packs_epi32(d0, d1);
}
static INLINE void btf_16_adds_subs_avx2(__m256i *in0, __m256i *in1) {
const __m256i _in0 = *in0;
const __m256i _in1 = *in1;
*in0 = _mm256_adds_epi16(_in0, _in1);
*in1 = _mm256_subs_epi16(_in0, _in1);
}
static INLINE void btf_32_add_sub_avx2(__m256i *in0, __m256i *in1) {
const __m256i _in0 = *in0;
const __m256i _in1 = *in1;
*in0 = _mm256_add_epi32(_in0, _in1);
*in1 = _mm256_sub_epi32(_in0, _in1);
}
static INLINE void btf_16_adds_subs_out_avx2(__m256i *out0, __m256i *out1,
__m256i in0, __m256i in1) {
const __m256i _in0 = in0;
const __m256i _in1 = in1;
*out0 = _mm256_adds_epi16(_in0, _in1);
*out1 = _mm256_subs_epi16(_in0, _in1);
}
static INLINE void btf_32_add_sub_out_avx2(__m256i *out0, __m256i *out1,
__m256i in0, __m256i in1) {
const __m256i _in0 = in0;
const __m256i _in1 = in1;
*out0 = _mm256_add_epi32(_in0, _in1);
*out1 = _mm256_sub_epi32(_in0, _in1);
}
static INLINE __m256i load_16bit_to_16bit_avx2(const int16_t *a) {
return _mm256_load_si256((const __m256i *)a);
}
static INLINE void load_buffer_16bit_to_16bit_avx2(const int16_t *in,
int stride, __m256i *out,
int out_size) {
for (int i = 0; i < out_size; ++i) {
out[i] = load_16bit_to_16bit_avx2(in + i * stride);
}
}
static INLINE void load_buffer_16bit_to_16bit_flip_avx2(const int16_t *in,
int stride,
__m256i *out,
int out_size) {
for (int i = 0; i < out_size; ++i) {
out[out_size - i - 1] = load_16bit_to_16bit_avx2(in + i * stride);
}
}
static INLINE __m256i load_32bit_to_16bit_w16_avx2(const int32_t *a) {
const __m256i a_low = _mm256_lddqu_si256((const __m256i *)a);
const __m256i b = _mm256_packs_epi32(a_low, *(const __m256i *)(a + 8));
return _mm256_permute4x64_epi64(b, 0xD8);
}
static INLINE void load_buffer_32bit_to_16bit_w16_avx2(const int32_t *in,
int stride, __m256i *out,
int out_size) {
for (int i = 0; i < out_size; ++i) {
out[i] = load_32bit_to_16bit_w16_avx2(in + i * stride);
}
}
static INLINE void transpose2_8x8_avx2(const __m256i *const in,
__m256i *const out) {
__m256i t[16], u[16];
// (1st, 2nd) ==> (lo, hi)
// (0, 1) ==> (0, 1)
// (2, 3) ==> (2, 3)
// (4, 5) ==> (4, 5)
// (6, 7) ==> (6, 7)
for (int i = 0; i < 4; i++) {
t[2 * i] = _mm256_unpacklo_epi16(in[2 * i], in[2 * i + 1]);
t[2 * i + 1] = _mm256_unpackhi_epi16(in[2 * i], in[2 * i + 1]);
}
// (1st, 2nd) ==> (lo, hi)
// (0, 2) ==> (0, 2)
// (1, 3) ==> (1, 3)
// (4, 6) ==> (4, 6)
// (5, 7) ==> (5, 7)
for (int i = 0; i < 2; i++) {
u[i] = _mm256_unpacklo_epi32(t[i], t[i + 2]);
u[i + 2] = _mm256_unpackhi_epi32(t[i], t[i + 2]);
u[i + 4] = _mm256_unpacklo_epi32(t[i + 4], t[i + 6]);
u[i + 6] = _mm256_unpackhi_epi32(t[i + 4], t[i + 6]);
}
// (1st, 2nd) ==> (lo, hi)
// (0, 4) ==> (0, 1)
// (1, 5) ==> (4, 5)
// (2, 6) ==> (2, 3)
// (3, 7) ==> (6, 7)
for (int i = 0; i < 2; i++) {
out[2 * i] = _mm256_unpacklo_epi64(u[2 * i], u[2 * i + 4]);
out[2 * i + 1] = _mm256_unpackhi_epi64(u[2 * i], u[2 * i + 4]);
out[2 * i + 4] = _mm256_unpacklo_epi64(u[2 * i + 1], u[2 * i + 5]);
out[2 * i + 5] = _mm256_unpackhi_epi64(u[2 * i + 1], u[2 * i + 5]);
}
}
static INLINE void transpose_16bit_16x16_avx2(const __m256i *const in,
__m256i *const out) {
__m256i t[16];
#define LOADL(idx) \
t[idx] = _mm256_castsi128_si256(_mm_load_si128((__m128i const *)&in[idx])); \
t[idx] = _mm256_inserti128_si256( \
t[idx], _mm_load_si128((__m128i const *)&in[idx + 8]), 1);
#define LOADR(idx) \
t[8 + idx] = \
_mm256_castsi128_si256(_mm_load_si128((__m128i const *)&in[idx] + 1)); \
t[8 + idx] = _mm256_inserti128_si256( \
t[8 + idx], _mm_load_si128((__m128i const *)&in[idx + 8] + 1), 1);
// load left 8x16
LOADL(0)
LOADL(1)
LOADL(2)
LOADL(3)
LOADL(4)
LOADL(5)
LOADL(6)
LOADL(7)
// load right 8x16
LOADR(0)
LOADR(1)
LOADR(2)
LOADR(3)
LOADR(4)
LOADR(5)
LOADR(6)
LOADR(7)
// get the top 16x8 result
transpose2_8x8_avx2(t, out);
// get the bottom 16x8 result
transpose2_8x8_avx2(&t[8], &out[8]);
}
static INLINE void transpose_16bit_16x8_avx2(const __m256i *const in,
__m256i *const out) {
const __m256i a0 = _mm256_unpacklo_epi16(in[0], in[1]);
const __m256i a1 = _mm256_unpacklo_epi16(in[2], in[3]);
const __m256i a2 = _mm256_unpacklo_epi16(in[4], in[5]);
const __m256i a3 = _mm256_unpacklo_epi16(in[6], in[7]);
const __m256i a4 = _mm256_unpackhi_epi16(in[0], in[1]);
const __m256i a5 = _mm256_unpackhi_epi16(in[2], in[3]);
const __m256i a6 = _mm256_unpackhi_epi16(in[4], in[5]);
const __m256i a7 = _mm256_unpackhi_epi16(in[6], in[7]);
const __m256i b0 = _mm256_unpacklo_epi32(a0, a1);
const __m256i b1 = _mm256_unpacklo_epi32(a2, a3);
const __m256i b2 = _mm256_unpacklo_epi32(a4, a5);
const __m256i b3 = _mm256_unpacklo_epi32(a6, a7);
const __m256i b4 = _mm256_unpackhi_epi32(a0, a1);
const __m256i b5 = _mm256_unpackhi_epi32(a2, a3);
const __m256i b6 = _mm256_unpackhi_epi32(a4, a5);
const __m256i b7 = _mm256_unpackhi_epi32(a6, a7);
out[0] = _mm256_unpacklo_epi64(b0, b1);
out[1] = _mm256_unpackhi_epi64(b0, b1);
out[2] = _mm256_unpacklo_epi64(b4, b5);
out[3] = _mm256_unpackhi_epi64(b4, b5);
out[4] = _mm256_unpacklo_epi64(b2, b3);
out[5] = _mm256_unpackhi_epi64(b2, b3);
out[6] = _mm256_unpacklo_epi64(b6, b7);
out[7] = _mm256_unpackhi_epi64(b6, b7);
}
static INLINE void flip_buf_avx2(__m256i *in, __m256i *out, int size) {
for (int i = 0; i < size; ++i) {
out[size - i - 1] = in[i];
}
}
static INLINE void round_shift_16bit_w16_avx2(__m256i *in, int size, int bit) {
if (bit < 0) {
bit = -bit;
__m256i round = _mm256_set1_epi16(1 << (bit - 1));
for (int i = 0; i < size; ++i) {
in[i] = _mm256_adds_epi16(in[i], round);
in[i] = _mm256_srai_epi16(in[i], bit);
}
} else if (bit > 0) {
for (int i = 0; i < size; ++i) {
in[i] = _mm256_slli_epi16(in[i], bit);
}
}
}
static INLINE __m256i round_shift_32_avx2(__m256i vec, int bit) {
__m256i tmp, round;
round = _mm256_set1_epi32(1 << (bit - 1));
tmp = _mm256_add_epi32(vec, round);
return _mm256_srai_epi32(tmp, bit);
}
static INLINE void round_shift_array_32_avx2(__m256i *input, __m256i *output,
const int size, const int bit) {
if (bit > 0) {
int i;
for (i = 0; i < size; i++) {
output[i] = round_shift_32_avx2(input[i], bit);
}
} else {
int i;
for (i = 0; i < size; i++) {
output[i] = _mm256_slli_epi32(input[i], -bit);
}
}
}
static INLINE void round_shift_rect_array_32_avx2(__m256i *input,
__m256i *output,
const int size, const int bit,
const int val) {
const __m256i sqrt2 = _mm256_set1_epi32(val);
if (bit > 0) {
int i;
for (i = 0; i < size; i++) {
const __m256i r0 = round_shift_32_avx2(input[i], bit);
const __m256i r1 = _mm256_mullo_epi32(sqrt2, r0);
output[i] = round_shift_32_avx2(r1, NewSqrt2Bits);
}
} else {
int i;
for (i = 0; i < size; i++) {
const __m256i r0 = _mm256_slli_epi32(input[i], -bit);
const __m256i r1 = _mm256_mullo_epi32(sqrt2, r0);
output[i] = round_shift_32_avx2(r1, NewSqrt2Bits);
}
}
}
static INLINE __m256i scale_round_avx2(const __m256i a, const int scale) {
const __m256i scale_rounding =
pair_set_w16_epi16(scale, 1 << (NewSqrt2Bits - 1));
const __m256i b = _mm256_madd_epi16(a, scale_rounding);
return _mm256_srai_epi32(b, NewSqrt2Bits);
}
static INLINE void store_rect_16bit_to_32bit_w8_avx2(const __m256i a,
int32_t *const b) {
const __m256i one = _mm256_set1_epi16(1);
const __m256i a_lo = _mm256_unpacklo_epi16(a, one);
const __m256i a_hi = _mm256_unpackhi_epi16(a, one);
const __m256i b_lo = scale_round_avx2(a_lo, NewSqrt2);
const __m256i b_hi = scale_round_avx2(a_hi, NewSqrt2);
const __m256i temp = _mm256_permute2f128_si256(b_lo, b_hi, 0x31);
_mm_store_si128((__m128i *)b, _mm256_castsi256_si128(b_lo));
_mm_store_si128((__m128i *)(b + 4), _mm256_castsi256_si128(b_hi));
_mm256_store_si256((__m256i *)(b + 64), temp);
}
static INLINE void store_rect_buffer_16bit_to_32bit_w8_avx2(
const __m256i *const in, int32_t *const out, const int stride,
const int out_size) {
for (int i = 0; i < out_size; ++i) {
store_rect_16bit_to_32bit_w8_avx2(in[i], out + i * stride);
}
}
static INLINE void pack_reg(const __m128i *in1, const __m128i *in2,
__m256i *out) {
out[0] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[0]), in2[0], 0x1);
out[1] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[1]), in2[1], 0x1);
out[2] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[2]), in2[2], 0x1);
out[3] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[3]), in2[3], 0x1);
out[4] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[4]), in2[4], 0x1);
out[5] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[5]), in2[5], 0x1);
out[6] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[6]), in2[6], 0x1);
out[7] = _mm256_insertf128_si256(_mm256_castsi128_si256(in1[7]), in2[7], 0x1);
}
static INLINE void extract_reg(const __m256i *in, __m128i *out1) {
out1[0] = _mm256_castsi256_si128(in[0]);
out1[1] = _mm256_castsi256_si128(in[1]);
out1[2] = _mm256_castsi256_si128(in[2]);
out1[3] = _mm256_castsi256_si128(in[3]);
out1[4] = _mm256_castsi256_si128(in[4]);
out1[5] = _mm256_castsi256_si128(in[5]);
out1[6] = _mm256_castsi256_si128(in[6]);
out1[7] = _mm256_castsi256_si128(in[7]);
out1[8] = _mm256_extracti128_si256(in[0], 0x01);
out1[9] = _mm256_extracti128_si256(in[1], 0x01);
out1[10] = _mm256_extracti128_si256(in[2], 0x01);
out1[11] = _mm256_extracti128_si256(in[3], 0x01);
out1[12] = _mm256_extracti128_si256(in[4], 0x01);
out1[13] = _mm256_extracti128_si256(in[5], 0x01);
out1[14] = _mm256_extracti128_si256(in[6], 0x01);
out1[15] = _mm256_extracti128_si256(in[7], 0x01);
}
#ifdef __cplusplus
}
#endif
#endif // AOM_AOM_DSP_X86_TXFM_COMMON_AVX2_H_
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