ref: 67aa6c8c23bc6ca90cfde756015f0aae61fe20f7
dir: /vp9/common/arm/neon/vp9_highbd_iht16x16_add_neon.c/
/*
* Copyright (c) 2018 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 <arm_neon.h>
#include "./vpx_dsp_rtcd.h"
#include "vp9/common/vp9_enums.h"
#include "vp9/common/arm/neon/vp9_iht_neon.h"
#include "vpx_dsp/arm/highbd_idct_neon.h"
#include "vpx_dsp/arm/idct_neon.h"
#include "vpx_dsp/arm/transpose_neon.h"
#include "vpx_dsp/inv_txfm.h"
// Use macros to make sure argument lane is passed in as an constant integer.
#define vmull_lane_s32_dual(in, c, lane, out) \
do { \
out[0].val[0] = vmull_lane_s32(vget_low_s32(in.val[0]), c, lane); \
out[0].val[1] = vmull_lane_s32(vget_low_s32(in.val[1]), c, lane); \
out[1].val[0] = vmull_lane_s32(vget_high_s32(in.val[0]), c, lane); \
out[1].val[1] = vmull_lane_s32(vget_high_s32(in.val[1]), c, lane); \
} while (0)
#define vmlal_lane_s32_dual(in, c, lane, out) \
do { \
out[0].val[0] = \
vmlal_lane_s32(out[0].val[0], vget_low_s32(in.val[0]), c, lane); \
out[0].val[1] = \
vmlal_lane_s32(out[0].val[1], vget_low_s32(in.val[1]), c, lane); \
out[1].val[0] = \
vmlal_lane_s32(out[1].val[0], vget_high_s32(in.val[0]), c, lane); \
out[1].val[1] = \
vmlal_lane_s32(out[1].val[1], vget_high_s32(in.val[1]), c, lane); \
} while (0)
#define vmlsl_lane_s32_dual(in, c, lane, out) \
do { \
out[0].val[0] = \
vmlsl_lane_s32(out[0].val[0], vget_low_s32(in.val[0]), c, lane); \
out[0].val[1] = \
vmlsl_lane_s32(out[0].val[1], vget_low_s32(in.val[1]), c, lane); \
out[1].val[0] = \
vmlsl_lane_s32(out[1].val[0], vget_high_s32(in.val[0]), c, lane); \
out[1].val[1] = \
vmlsl_lane_s32(out[1].val[1], vget_high_s32(in.val[1]), c, lane); \
} while (0)
static INLINE int32x4x2_t
highbd_dct_const_round_shift_low_8(const int64x2x2_t *const in) {
int32x4x2_t out;
out.val[0] = vcombine_s32(vrshrn_n_s64(in[0].val[0], DCT_CONST_BITS),
vrshrn_n_s64(in[1].val[0], DCT_CONST_BITS));
out.val[1] = vcombine_s32(vrshrn_n_s64(in[0].val[1], DCT_CONST_BITS),
vrshrn_n_s64(in[1].val[1], DCT_CONST_BITS));
return out;
}
#define highbd_iadst_half_butterfly(in, c, lane, out) \
do { \
int64x2x2_t t[2]; \
vmull_lane_s32_dual(in, c, lane, t); \
out = highbd_dct_const_round_shift_low_8(t); \
} while (0)
#define highbd_iadst_butterfly(in0, in1, c, lane0, lane1, s0, s1) \
do { \
vmull_lane_s32_dual(in0, c, lane0, s0); \
vmull_lane_s32_dual(in0, c, lane1, s1); \
vmlal_lane_s32_dual(in1, c, lane1, s0); \
vmlsl_lane_s32_dual(in1, c, lane0, s1); \
} while (0)
static INLINE int32x4x2_t vaddq_s32_dual(const int32x4x2_t in0,
const int32x4x2_t in1) {
int32x4x2_t out;
out.val[0] = vaddq_s32(in0.val[0], in1.val[0]);
out.val[1] = vaddq_s32(in0.val[1], in1.val[1]);
return out;
}
static INLINE int64x2x2_t vaddq_s64_dual(const int64x2x2_t in0,
const int64x2x2_t in1) {
int64x2x2_t out;
out.val[0] = vaddq_s64(in0.val[0], in1.val[0]);
out.val[1] = vaddq_s64(in0.val[1], in1.val[1]);
return out;
}
static INLINE int32x4x2_t vsubq_s32_dual(const int32x4x2_t in0,
const int32x4x2_t in1) {
int32x4x2_t out;
out.val[0] = vsubq_s32(in0.val[0], in1.val[0]);
out.val[1] = vsubq_s32(in0.val[1], in1.val[1]);
return out;
}
static INLINE int64x2x2_t vsubq_s64_dual(const int64x2x2_t in0,
const int64x2x2_t in1) {
int64x2x2_t out;
out.val[0] = vsubq_s64(in0.val[0], in1.val[0]);
out.val[1] = vsubq_s64(in0.val[1], in1.val[1]);
return out;
}
static INLINE int32x4x2_t vcombine_s32_dual(const int32x2x2_t in0,
const int32x2x2_t in1) {
int32x4x2_t out;
out.val[0] = vcombine_s32(in0.val[0], in1.val[0]);
out.val[1] = vcombine_s32(in0.val[1], in1.val[1]);
return out;
}
static INLINE int32x4x2_t highbd_add_dct_const_round_shift_low_8(
const int64x2x2_t *const in0, const int64x2x2_t *const in1) {
const int64x2x2_t sum_lo = vaddq_s64_dual(in0[0], in1[0]);
const int64x2x2_t sum_hi = vaddq_s64_dual(in0[1], in1[1]);
int32x2x2_t out_lo, out_hi;
out_lo.val[0] = vrshrn_n_s64(sum_lo.val[0], DCT_CONST_BITS);
out_lo.val[1] = vrshrn_n_s64(sum_lo.val[1], DCT_CONST_BITS);
out_hi.val[0] = vrshrn_n_s64(sum_hi.val[0], DCT_CONST_BITS);
out_hi.val[1] = vrshrn_n_s64(sum_hi.val[1], DCT_CONST_BITS);
return vcombine_s32_dual(out_lo, out_hi);
}
static INLINE int32x4x2_t highbd_sub_dct_const_round_shift_low_8(
const int64x2x2_t *const in0, const int64x2x2_t *const in1) {
const int64x2x2_t sub_lo = vsubq_s64_dual(in0[0], in1[0]);
const int64x2x2_t sub_hi = vsubq_s64_dual(in0[1], in1[1]);
int32x2x2_t out_lo, out_hi;
out_lo.val[0] = vrshrn_n_s64(sub_lo.val[0], DCT_CONST_BITS);
out_lo.val[1] = vrshrn_n_s64(sub_lo.val[1], DCT_CONST_BITS);
out_hi.val[0] = vrshrn_n_s64(sub_hi.val[0], DCT_CONST_BITS);
out_hi.val[1] = vrshrn_n_s64(sub_hi.val[1], DCT_CONST_BITS);
return vcombine_s32_dual(out_lo, out_hi);
}
static INLINE int32x4x2_t vnegq_s32_dual(const int32x4x2_t in) {
int32x4x2_t out;
out.val[0] = vnegq_s32(in.val[0]);
out.val[1] = vnegq_s32(in.val[1]);
return out;
}
static void highbd_iadst16_neon(const int32_t *input, int32_t *output,
uint16_t *dest, const int stride,
const int bd) {
const int32x4_t c_1_31_5_27 =
create_s32x4_neon(cospi_1_64, cospi_31_64, cospi_5_64, cospi_27_64);
const int32x4_t c_9_23_13_19 =
create_s32x4_neon(cospi_9_64, cospi_23_64, cospi_13_64, cospi_19_64);
const int32x4_t c_17_15_21_11 =
create_s32x4_neon(cospi_17_64, cospi_15_64, cospi_21_64, cospi_11_64);
const int32x4_t c_25_7_29_3 =
create_s32x4_neon(cospi_25_64, cospi_7_64, cospi_29_64, cospi_3_64);
const int32x4_t c_4_28_20_12 =
create_s32x4_neon(cospi_4_64, cospi_28_64, cospi_20_64, cospi_12_64);
const int32x4_t c_16_n16_8_24 =
create_s32x4_neon(cospi_16_64, -cospi_16_64, cospi_8_64, cospi_24_64);
int32x4x2_t in[16], out[16];
int32x4x2_t x[16], t[12];
int64x2x2_t s0[2], s1[2], s2[2], s3[2], s4[2], s5[2], s6[2], s7[2];
int64x2x2_t s8[2], s9[2], s10[2], s11[2], s12[2], s13[2], s14[2], s15[2];
// Load input (16x8)
in[0].val[0] = vld1q_s32(input);
in[0].val[1] = vld1q_s32(input + 4);
input += 8;
in[8].val[0] = vld1q_s32(input);
in[8].val[1] = vld1q_s32(input + 4);
input += 8;
in[1].val[0] = vld1q_s32(input);
in[1].val[1] = vld1q_s32(input + 4);
input += 8;
in[9].val[0] = vld1q_s32(input);
in[9].val[1] = vld1q_s32(input + 4);
input += 8;
in[2].val[0] = vld1q_s32(input);
in[2].val[1] = vld1q_s32(input + 4);
input += 8;
in[10].val[0] = vld1q_s32(input);
in[10].val[1] = vld1q_s32(input + 4);
input += 8;
in[3].val[0] = vld1q_s32(input);
in[3].val[1] = vld1q_s32(input + 4);
input += 8;
in[11].val[0] = vld1q_s32(input);
in[11].val[1] = vld1q_s32(input + 4);
input += 8;
in[4].val[0] = vld1q_s32(input);
in[4].val[1] = vld1q_s32(input + 4);
input += 8;
in[12].val[0] = vld1q_s32(input);
in[12].val[1] = vld1q_s32(input + 4);
input += 8;
in[5].val[0] = vld1q_s32(input);
in[5].val[1] = vld1q_s32(input + 4);
input += 8;
in[13].val[0] = vld1q_s32(input);
in[13].val[1] = vld1q_s32(input + 4);
input += 8;
in[6].val[0] = vld1q_s32(input);
in[6].val[1] = vld1q_s32(input + 4);
input += 8;
in[14].val[0] = vld1q_s32(input);
in[14].val[1] = vld1q_s32(input + 4);
input += 8;
in[7].val[0] = vld1q_s32(input);
in[7].val[1] = vld1q_s32(input + 4);
input += 8;
in[15].val[0] = vld1q_s32(input);
in[15].val[1] = vld1q_s32(input + 4);
// Transpose
transpose_s32_8x8(&in[0], &in[1], &in[2], &in[3], &in[4], &in[5], &in[6],
&in[7]);
transpose_s32_8x8(&in[8], &in[9], &in[10], &in[11], &in[12], &in[13], &in[14],
&in[15]);
x[0] = in[15];
x[1] = in[0];
x[2] = in[13];
x[3] = in[2];
x[4] = in[11];
x[5] = in[4];
x[6] = in[9];
x[7] = in[6];
x[8] = in[7];
x[9] = in[8];
x[10] = in[5];
x[11] = in[10];
x[12] = in[3];
x[13] = in[12];
x[14] = in[1];
x[15] = in[14];
// stage 1
highbd_iadst_butterfly(x[0], x[1], vget_low_s32(c_1_31_5_27), 0, 1, s0, s1);
highbd_iadst_butterfly(x[2], x[3], vget_high_s32(c_1_31_5_27), 0, 1, s2, s3);
highbd_iadst_butterfly(x[4], x[5], vget_low_s32(c_9_23_13_19), 0, 1, s4, s5);
highbd_iadst_butterfly(x[6], x[7], vget_high_s32(c_9_23_13_19), 0, 1, s6, s7);
highbd_iadst_butterfly(x[8], x[9], vget_low_s32(c_17_15_21_11), 0, 1, s8, s9);
highbd_iadst_butterfly(x[10], x[11], vget_high_s32(c_17_15_21_11), 0, 1, s10,
s11);
highbd_iadst_butterfly(x[12], x[13], vget_low_s32(c_25_7_29_3), 0, 1, s12,
s13);
highbd_iadst_butterfly(x[14], x[15], vget_high_s32(c_25_7_29_3), 0, 1, s14,
s15);
x[0] = highbd_add_dct_const_round_shift_low_8(s0, s8);
x[1] = highbd_add_dct_const_round_shift_low_8(s1, s9);
x[2] = highbd_add_dct_const_round_shift_low_8(s2, s10);
x[3] = highbd_add_dct_const_round_shift_low_8(s3, s11);
x[4] = highbd_add_dct_const_round_shift_low_8(s4, s12);
x[5] = highbd_add_dct_const_round_shift_low_8(s5, s13);
x[6] = highbd_add_dct_const_round_shift_low_8(s6, s14);
x[7] = highbd_add_dct_const_round_shift_low_8(s7, s15);
x[8] = highbd_sub_dct_const_round_shift_low_8(s0, s8);
x[9] = highbd_sub_dct_const_round_shift_low_8(s1, s9);
x[10] = highbd_sub_dct_const_round_shift_low_8(s2, s10);
x[11] = highbd_sub_dct_const_round_shift_low_8(s3, s11);
x[12] = highbd_sub_dct_const_round_shift_low_8(s4, s12);
x[13] = highbd_sub_dct_const_round_shift_low_8(s5, s13);
x[14] = highbd_sub_dct_const_round_shift_low_8(s6, s14);
x[15] = highbd_sub_dct_const_round_shift_low_8(s7, s15);
// stage 2
t[0] = x[0];
t[1] = x[1];
t[2] = x[2];
t[3] = x[3];
t[4] = x[4];
t[5] = x[5];
t[6] = x[6];
t[7] = x[7];
highbd_iadst_butterfly(x[8], x[9], vget_low_s32(c_4_28_20_12), 0, 1, s8, s9);
highbd_iadst_butterfly(x[10], x[11], vget_high_s32(c_4_28_20_12), 0, 1, s10,
s11);
highbd_iadst_butterfly(x[13], x[12], vget_low_s32(c_4_28_20_12), 1, 0, s13,
s12);
highbd_iadst_butterfly(x[15], x[14], vget_high_s32(c_4_28_20_12), 1, 0, s15,
s14);
x[0] = vaddq_s32_dual(t[0], t[4]);
x[1] = vaddq_s32_dual(t[1], t[5]);
x[2] = vaddq_s32_dual(t[2], t[6]);
x[3] = vaddq_s32_dual(t[3], t[7]);
x[4] = vsubq_s32_dual(t[0], t[4]);
x[5] = vsubq_s32_dual(t[1], t[5]);
x[6] = vsubq_s32_dual(t[2], t[6]);
x[7] = vsubq_s32_dual(t[3], t[7]);
x[8] = highbd_add_dct_const_round_shift_low_8(s8, s12);
x[9] = highbd_add_dct_const_round_shift_low_8(s9, s13);
x[10] = highbd_add_dct_const_round_shift_low_8(s10, s14);
x[11] = highbd_add_dct_const_round_shift_low_8(s11, s15);
x[12] = highbd_sub_dct_const_round_shift_low_8(s8, s12);
x[13] = highbd_sub_dct_const_round_shift_low_8(s9, s13);
x[14] = highbd_sub_dct_const_round_shift_low_8(s10, s14);
x[15] = highbd_sub_dct_const_round_shift_low_8(s11, s15);
// stage 3
t[0] = x[0];
t[1] = x[1];
t[2] = x[2];
t[3] = x[3];
highbd_iadst_butterfly(x[4], x[5], vget_high_s32(c_16_n16_8_24), 0, 1, s4,
s5);
highbd_iadst_butterfly(x[7], x[6], vget_high_s32(c_16_n16_8_24), 1, 0, s7,
s6);
t[8] = x[8];
t[9] = x[9];
t[10] = x[10];
t[11] = x[11];
highbd_iadst_butterfly(x[12], x[13], vget_high_s32(c_16_n16_8_24), 0, 1, s12,
s13);
highbd_iadst_butterfly(x[15], x[14], vget_high_s32(c_16_n16_8_24), 1, 0, s15,
s14);
x[0] = vaddq_s32_dual(t[0], t[2]);
x[1] = vaddq_s32_dual(t[1], t[3]);
x[2] = vsubq_s32_dual(t[0], t[2]);
x[3] = vsubq_s32_dual(t[1], t[3]);
x[4] = highbd_add_dct_const_round_shift_low_8(s4, s6);
x[5] = highbd_add_dct_const_round_shift_low_8(s5, s7);
x[6] = highbd_sub_dct_const_round_shift_low_8(s4, s6);
x[7] = highbd_sub_dct_const_round_shift_low_8(s5, s7);
x[8] = vaddq_s32_dual(t[8], t[10]);
x[9] = vaddq_s32_dual(t[9], t[11]);
x[10] = vsubq_s32_dual(t[8], t[10]);
x[11] = vsubq_s32_dual(t[9], t[11]);
x[12] = highbd_add_dct_const_round_shift_low_8(s12, s14);
x[13] = highbd_add_dct_const_round_shift_low_8(s13, s15);
x[14] = highbd_sub_dct_const_round_shift_low_8(s12, s14);
x[15] = highbd_sub_dct_const_round_shift_low_8(s13, s15);
// stage 4
{
const int32x4x2_t sum = vaddq_s32_dual(x[2], x[3]);
const int32x4x2_t sub = vsubq_s32_dual(x[2], x[3]);
highbd_iadst_half_butterfly(sum, vget_low_s32(c_16_n16_8_24), 1, x[2]);
highbd_iadst_half_butterfly(sub, vget_low_s32(c_16_n16_8_24), 0, x[3]);
}
{
const int32x4x2_t sum = vaddq_s32_dual(x[7], x[6]);
const int32x4x2_t sub = vsubq_s32_dual(x[7], x[6]);
highbd_iadst_half_butterfly(sum, vget_low_s32(c_16_n16_8_24), 0, x[6]);
highbd_iadst_half_butterfly(sub, vget_low_s32(c_16_n16_8_24), 0, x[7]);
}
{
const int32x4x2_t sum = vaddq_s32_dual(x[11], x[10]);
const int32x4x2_t sub = vsubq_s32_dual(x[11], x[10]);
highbd_iadst_half_butterfly(sum, vget_low_s32(c_16_n16_8_24), 0, x[10]);
highbd_iadst_half_butterfly(sub, vget_low_s32(c_16_n16_8_24), 0, x[11]);
}
{
const int32x4x2_t sum = vaddq_s32_dual(x[14], x[15]);
const int32x4x2_t sub = vsubq_s32_dual(x[14], x[15]);
highbd_iadst_half_butterfly(sum, vget_low_s32(c_16_n16_8_24), 1, x[14]);
highbd_iadst_half_butterfly(sub, vget_low_s32(c_16_n16_8_24), 0, x[15]);
}
out[0] = x[0];
out[1] = vnegq_s32_dual(x[8]);
out[2] = x[12];
out[3] = vnegq_s32_dual(x[4]);
out[4] = x[6];
out[5] = x[14];
out[6] = x[10];
out[7] = x[2];
out[8] = x[3];
out[9] = x[11];
out[10] = x[15];
out[11] = x[7];
out[12] = x[5];
out[13] = vnegq_s32_dual(x[13]);
out[14] = x[9];
out[15] = vnegq_s32_dual(x[1]);
if (output) {
highbd_idct16x16_store_pass1(out, output);
} else {
highbd_idct16x16_add_store(out, dest, stride, bd);
}
}
typedef void (*highbd_iht_1d)(const int32_t *input, int32_t *output,
uint16_t *dest, const int stride, const int bd);
typedef struct {
highbd_iht_1d cols, rows; // vertical and horizontal
} highbd_iht_2d;
void vp9_highbd_iht16x16_256_add_neon(const tran_low_t *input, uint16_t *dest,
int stride, int tx_type, int bd) {
if (bd == 8) {
static const iht_2d IHT_16[] = {
{ vpx_idct16x16_256_add_half1d,
vpx_idct16x16_256_add_half1d }, // DCT_DCT = 0
{ vpx_iadst16x16_256_add_half1d,
vpx_idct16x16_256_add_half1d }, // ADST_DCT = 1
{ vpx_idct16x16_256_add_half1d,
vpx_iadst16x16_256_add_half1d }, // DCT_ADST = 2
{ vpx_iadst16x16_256_add_half1d,
vpx_iadst16x16_256_add_half1d } // ADST_ADST = 3
};
const iht_2d ht = IHT_16[tx_type];
int16_t row_output[16 * 16];
// pass 1
ht.rows(input, row_output, dest, stride, 1); // upper 8 rows
ht.rows(input + 8 * 16, row_output + 8, dest, stride, 1); // lower 8 rows
// pass 2
ht.cols(row_output, NULL, dest, stride, 1); // left 8 columns
ht.cols(row_output + 16 * 8, NULL, dest + 8, stride, 1); // right 8 columns
} else {
static const highbd_iht_2d IHT_16[] = {
{ vpx_highbd_idct16x16_256_add_half1d,
vpx_highbd_idct16x16_256_add_half1d }, // DCT_DCT = 0
{ highbd_iadst16_neon,
vpx_highbd_idct16x16_256_add_half1d }, // ADST_DCT = 1
{ vpx_highbd_idct16x16_256_add_half1d,
highbd_iadst16_neon }, // DCT_ADST = 2
{ highbd_iadst16_neon, highbd_iadst16_neon } // ADST_ADST = 3
};
const highbd_iht_2d ht = IHT_16[tx_type];
int32_t row_output[16 * 16];
// pass 1
ht.rows(input, row_output, dest, stride, bd); // upper 8 rows
ht.rows(input + 8 * 16, row_output + 8, dest, stride, bd); // lower 8 rows
// pass 2
ht.cols(row_output, NULL, dest, stride, bd); // left 8 columns
ht.cols(row_output + 8 * 16, NULL, dest + 8, stride,
bd); // right 8 columns
}
}