ref: 7c1f5208e95efd564986ab33ded28c04fbfc08a3
dir: /vp9/common/arm/neon/vp9_highbd_iht8x8_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"
static INLINE void highbd_iadst_half_butterfly_neon(int32x4_t *const x,
const int32x2_t c) {
const int32x4_t sum = vaddq_s32(x[0], x[1]);
const int32x4_t sub = vsubq_s32(x[0], x[1]);
const int64x2_t t0_lo = vmull_lane_s32(vget_low_s32(sum), c, 0);
const int64x2_t t1_lo = vmull_lane_s32(vget_low_s32(sub), c, 0);
const int64x2_t t0_hi = vmull_lane_s32(vget_high_s32(sum), c, 0);
const int64x2_t t1_hi = vmull_lane_s32(vget_high_s32(sub), c, 0);
const int32x2_t out0_lo = vrshrn_n_s64(t0_lo, DCT_CONST_BITS);
const int32x2_t out1_lo = vrshrn_n_s64(t1_lo, DCT_CONST_BITS);
const int32x2_t out0_hi = vrshrn_n_s64(t0_hi, DCT_CONST_BITS);
const int32x2_t out1_hi = vrshrn_n_s64(t1_hi, DCT_CONST_BITS);
x[0] = vcombine_s32(out0_lo, out0_hi);
x[1] = vcombine_s32(out1_lo, out1_hi);
}
static INLINE void highbd_iadst_butterfly_lane_0_1_neon(const int32x4_t in0,
const int32x4_t in1,
const int32x2_t c,
int64x2_t *const s0,
int64x2_t *const s1) {
const int64x2_t t0_lo = vmull_lane_s32(vget_low_s32(in0), c, 0);
const int64x2_t t1_lo = vmull_lane_s32(vget_low_s32(in0), c, 1);
const int64x2_t t0_hi = vmull_lane_s32(vget_high_s32(in0), c, 0);
const int64x2_t t1_hi = vmull_lane_s32(vget_high_s32(in0), c, 1);
s0[0] = vmlal_lane_s32(t0_lo, vget_low_s32(in1), c, 1);
s1[0] = vmlsl_lane_s32(t1_lo, vget_low_s32(in1), c, 0);
s0[1] = vmlal_lane_s32(t0_hi, vget_high_s32(in1), c, 1);
s1[1] = vmlsl_lane_s32(t1_hi, vget_high_s32(in1), c, 0);
}
static INLINE void highbd_iadst_butterfly_lane_1_0_neon(const int32x4_t in0,
const int32x4_t in1,
const int32x2_t c,
int64x2_t *const s0,
int64x2_t *const s1) {
const int64x2_t t0_lo = vmull_lane_s32(vget_low_s32(in0), c, 1);
const int64x2_t t1_lo = vmull_lane_s32(vget_low_s32(in0), c, 0);
const int64x2_t t0_hi = vmull_lane_s32(vget_high_s32(in0), c, 1);
const int64x2_t t1_hi = vmull_lane_s32(vget_high_s32(in0), c, 0);
s0[0] = vmlal_lane_s32(t0_lo, vget_low_s32(in1), c, 0);
s1[0] = vmlsl_lane_s32(t1_lo, vget_low_s32(in1), c, 1);
s0[1] = vmlal_lane_s32(t0_hi, vget_high_s32(in1), c, 0);
s1[1] = vmlsl_lane_s32(t1_hi, vget_high_s32(in1), c, 1);
}
static INLINE int32x4_t highbd_add_dct_const_round_shift_low_8(
const int64x2_t *const in0, const int64x2_t *const in1) {
const int64x2_t sum_lo = vaddq_s64(in0[0], in1[0]);
const int64x2_t sum_hi = vaddq_s64(in0[1], in1[1]);
const int32x2_t out_lo = vrshrn_n_s64(sum_lo, DCT_CONST_BITS);
const int32x2_t out_hi = vrshrn_n_s64(sum_hi, DCT_CONST_BITS);
return vcombine_s32(out_lo, out_hi);
}
static INLINE int32x4_t highbd_sub_dct_const_round_shift_low_8(
const int64x2_t *const in0, const int64x2_t *const in1) {
const int64x2_t sub_lo = vsubq_s64(in0[0], in1[0]);
const int64x2_t sub_hi = vsubq_s64(in0[1], in1[1]);
const int32x2_t out_lo = vrshrn_n_s64(sub_lo, DCT_CONST_BITS);
const int32x2_t out_hi = vrshrn_n_s64(sub_hi, DCT_CONST_BITS);
return vcombine_s32(out_lo, out_hi);
}
static INLINE void highbd_iadst8(int32x4_t *const io0, int32x4_t *const io1,
int32x4_t *const io2, int32x4_t *const io3,
int32x4_t *const io4, int32x4_t *const io5,
int32x4_t *const io6, int32x4_t *const io7) {
const int32x4_t c0 =
create_s32x4_neon(cospi_2_64, cospi_30_64, cospi_10_64, cospi_22_64);
const int32x4_t c1 =
create_s32x4_neon(cospi_18_64, cospi_14_64, cospi_26_64, cospi_6_64);
const int32x4_t c2 =
create_s32x4_neon(cospi_16_64, 0, cospi_8_64, cospi_24_64);
int32x4_t x[8], t[4];
int64x2_t s[8][2];
x[0] = *io7;
x[1] = *io0;
x[2] = *io5;
x[3] = *io2;
x[4] = *io3;
x[5] = *io4;
x[6] = *io1;
x[7] = *io6;
// stage 1
highbd_iadst_butterfly_lane_0_1_neon(x[0], x[1], vget_low_s32(c0), s[0],
s[1]);
highbd_iadst_butterfly_lane_0_1_neon(x[2], x[3], vget_high_s32(c0), s[2],
s[3]);
highbd_iadst_butterfly_lane_0_1_neon(x[4], x[5], vget_low_s32(c1), s[4],
s[5]);
highbd_iadst_butterfly_lane_0_1_neon(x[6], x[7], vget_high_s32(c1), s[6],
s[7]);
x[0] = highbd_add_dct_const_round_shift_low_8(s[0], s[4]);
x[1] = highbd_add_dct_const_round_shift_low_8(s[1], s[5]);
x[2] = highbd_add_dct_const_round_shift_low_8(s[2], s[6]);
x[3] = highbd_add_dct_const_round_shift_low_8(s[3], s[7]);
x[4] = highbd_sub_dct_const_round_shift_low_8(s[0], s[4]);
x[5] = highbd_sub_dct_const_round_shift_low_8(s[1], s[5]);
x[6] = highbd_sub_dct_const_round_shift_low_8(s[2], s[6]);
x[7] = highbd_sub_dct_const_round_shift_low_8(s[3], s[7]);
// stage 2
t[0] = x[0];
t[1] = x[1];
t[2] = x[2];
t[3] = x[3];
highbd_iadst_butterfly_lane_0_1_neon(x[4], x[5], vget_high_s32(c2), s[4],
s[5]);
highbd_iadst_butterfly_lane_1_0_neon(x[7], x[6], vget_high_s32(c2), s[7],
s[6]);
x[0] = vaddq_s32(t[0], t[2]);
x[1] = vaddq_s32(t[1], t[3]);
x[2] = vsubq_s32(t[0], t[2]);
x[3] = vsubq_s32(t[1], t[3]);
x[4] = highbd_add_dct_const_round_shift_low_8(s[4], s[6]);
x[5] = highbd_add_dct_const_round_shift_low_8(s[5], s[7]);
x[6] = highbd_sub_dct_const_round_shift_low_8(s[4], s[6]);
x[7] = highbd_sub_dct_const_round_shift_low_8(s[5], s[7]);
// stage 3
highbd_iadst_half_butterfly_neon(x + 2, vget_low_s32(c2));
highbd_iadst_half_butterfly_neon(x + 6, vget_low_s32(c2));
*io0 = x[0];
*io1 = vnegq_s32(x[4]);
*io2 = x[6];
*io3 = vnegq_s32(x[2]);
*io4 = x[3];
*io5 = vnegq_s32(x[7]);
*io6 = x[5];
*io7 = vnegq_s32(x[1]);
}
void vp9_highbd_iht8x8_64_add_neon(const tran_low_t *input, uint16_t *dest,
int stride, int tx_type, int bd) {
int32x4_t a[16];
int16x8_t c[8];
a[0] = vld1q_s32(input);
a[1] = vld1q_s32(input + 4);
a[2] = vld1q_s32(input + 8);
a[3] = vld1q_s32(input + 12);
a[4] = vld1q_s32(input + 16);
a[5] = vld1q_s32(input + 20);
a[6] = vld1q_s32(input + 24);
a[7] = vld1q_s32(input + 28);
a[8] = vld1q_s32(input + 32);
a[9] = vld1q_s32(input + 36);
a[10] = vld1q_s32(input + 40);
a[11] = vld1q_s32(input + 44);
a[12] = vld1q_s32(input + 48);
a[13] = vld1q_s32(input + 52);
a[14] = vld1q_s32(input + 56);
a[15] = vld1q_s32(input + 60);
if (bd == 8) {
c[0] = vcombine_s16(vmovn_s32(a[0]), vmovn_s32(a[1]));
c[1] = vcombine_s16(vmovn_s32(a[2]), vmovn_s32(a[3]));
c[2] = vcombine_s16(vmovn_s32(a[4]), vmovn_s32(a[5]));
c[3] = vcombine_s16(vmovn_s32(a[6]), vmovn_s32(a[7]));
c[4] = vcombine_s16(vmovn_s32(a[8]), vmovn_s32(a[9]));
c[5] = vcombine_s16(vmovn_s32(a[10]), vmovn_s32(a[11]));
c[6] = vcombine_s16(vmovn_s32(a[12]), vmovn_s32(a[13]));
c[7] = vcombine_s16(vmovn_s32(a[14]), vmovn_s32(a[15]));
switch (tx_type) {
case DCT_DCT: {
const int16x8_t cospis = vld1q_s16(kCospi);
const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24
const int16x4_t cospis1 = vget_high_s16(cospis); // cospi 4, 12, 20, 28
idct8x8_64_1d_bd8(cospis0, cospis1, c);
idct8x8_64_1d_bd8(cospis0, cospis1, c);
break;
}
case ADST_DCT: {
const int16x8_t cospis = vld1q_s16(kCospi);
const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24
const int16x4_t cospis1 = vget_high_s16(cospis); // cospi 4, 12, 20, 28
idct8x8_64_1d_bd8(cospis0, cospis1, c);
transpose_s16_8x8(&c[0], &c[1], &c[2], &c[3], &c[4], &c[5], &c[6],
&c[7]);
iadst8(c);
break;
}
case DCT_ADST: {
const int16x8_t cospis = vld1q_s16(kCospi);
const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24
const int16x4_t cospis1 = vget_high_s16(cospis); // cospi 4, 12, 20, 28
transpose_s16_8x8(&c[0], &c[1], &c[2], &c[3], &c[4], &c[5], &c[6],
&c[7]);
iadst8(c);
idct8x8_64_1d_bd8(cospis0, cospis1, c);
break;
}
default: {
transpose_s16_8x8(&c[0], &c[1], &c[2], &c[3], &c[4], &c[5], &c[6],
&c[7]);
iadst8(c);
transpose_s16_8x8(&c[0], &c[1], &c[2], &c[3], &c[4], &c[5], &c[6],
&c[7]);
iadst8(c);
break;
}
}
c[0] = vrshrq_n_s16(c[0], 5);
c[1] = vrshrq_n_s16(c[1], 5);
c[2] = vrshrq_n_s16(c[2], 5);
c[3] = vrshrq_n_s16(c[3], 5);
c[4] = vrshrq_n_s16(c[4], 5);
c[5] = vrshrq_n_s16(c[5], 5);
c[6] = vrshrq_n_s16(c[6], 5);
c[7] = vrshrq_n_s16(c[7], 5);
} else {
switch (tx_type) {
case DCT_DCT: {
const int32x4_t cospis0 = vld1q_s32(kCospi32); // cospi 0, 8, 16, 24
const int32x4_t cospis1 =
vld1q_s32(kCospi32 + 4); // cospi 4, 12, 20, 28
if (bd == 10) {
idct8x8_64_half1d_bd10(cospis0, cospis1, &a[0], &a[1], &a[2], &a[3],
&a[4], &a[5], &a[6], &a[7]);
idct8x8_64_half1d_bd10(cospis0, cospis1, &a[8], &a[9], &a[10], &a[11],
&a[12], &a[13], &a[14], &a[15]);
idct8x8_64_half1d_bd10(cospis0, cospis1, &a[0], &a[8], &a[1], &a[9],
&a[2], &a[10], &a[3], &a[11]);
idct8x8_64_half1d_bd10(cospis0, cospis1, &a[4], &a[12], &a[5], &a[13],
&a[6], &a[14], &a[7], &a[15]);
} else {
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[0], &a[1], &a[2], &a[3],
&a[4], &a[5], &a[6], &a[7]);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[8], &a[9], &a[10], &a[11],
&a[12], &a[13], &a[14], &a[15]);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[0], &a[8], &a[1], &a[9],
&a[2], &a[10], &a[3], &a[11]);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[4], &a[12], &a[5], &a[13],
&a[6], &a[14], &a[7], &a[15]);
}
break;
}
case ADST_DCT: {
const int32x4_t cospis0 = vld1q_s32(kCospi32); // cospi 0, 8, 16, 24
const int32x4_t cospis1 =
vld1q_s32(kCospi32 + 4); // cospi 4, 12, 20, 28
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[0], &a[1], &a[2], &a[3],
&a[4], &a[5], &a[6], &a[7]);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[8], &a[9], &a[10], &a[11],
&a[12], &a[13], &a[14], &a[15]);
transpose_s32_8x4(&a[0], &a[8], &a[1], &a[9], &a[2], &a[10], &a[3],
&a[11]);
highbd_iadst8(&a[0], &a[8], &a[1], &a[9], &a[2], &a[10], &a[3], &a[11]);
transpose_s32_8x4(&a[4], &a[12], &a[5], &a[13], &a[6], &a[14], &a[7],
&a[15]);
highbd_iadst8(&a[4], &a[12], &a[5], &a[13], &a[6], &a[14], &a[7],
&a[15]);
break;
}
case DCT_ADST: {
const int32x4_t cospis0 = vld1q_s32(kCospi32); // cospi 0, 8, 16, 24
const int32x4_t cospis1 =
vld1q_s32(kCospi32 + 4); // cospi 4, 12, 20, 28
transpose_s32_8x4(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6],
&a[7]);
highbd_iadst8(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6], &a[7]);
transpose_s32_8x4(&a[8], &a[9], &a[10], &a[11], &a[12], &a[13], &a[14],
&a[15]);
highbd_iadst8(&a[8], &a[9], &a[10], &a[11], &a[12], &a[13], &a[14],
&a[15]);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[0], &a[8], &a[1], &a[9],
&a[2], &a[10], &a[3], &a[11]);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a[4], &a[12], &a[5], &a[13],
&a[6], &a[14], &a[7], &a[15]);
break;
}
default: {
assert(tx_type == ADST_ADST);
transpose_s32_8x4(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6],
&a[7]);
highbd_iadst8(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6], &a[7]);
transpose_s32_8x4(&a[8], &a[9], &a[10], &a[11], &a[12], &a[13], &a[14],
&a[15]);
highbd_iadst8(&a[8], &a[9], &a[10], &a[11], &a[12], &a[13], &a[14],
&a[15]);
transpose_s32_8x4(&a[0], &a[8], &a[1], &a[9], &a[2], &a[10], &a[3],
&a[11]);
highbd_iadst8(&a[0], &a[8], &a[1], &a[9], &a[2], &a[10], &a[3], &a[11]);
transpose_s32_8x4(&a[4], &a[12], &a[5], &a[13], &a[6], &a[14], &a[7],
&a[15]);
highbd_iadst8(&a[4], &a[12], &a[5], &a[13], &a[6], &a[14], &a[7],
&a[15]);
break;
}
}
c[0] = vcombine_s16(vrshrn_n_s32(a[0], 5), vrshrn_n_s32(a[4], 5));
c[1] = vcombine_s16(vrshrn_n_s32(a[8], 5), vrshrn_n_s32(a[12], 5));
c[2] = vcombine_s16(vrshrn_n_s32(a[1], 5), vrshrn_n_s32(a[5], 5));
c[3] = vcombine_s16(vrshrn_n_s32(a[9], 5), vrshrn_n_s32(a[13], 5));
c[4] = vcombine_s16(vrshrn_n_s32(a[2], 5), vrshrn_n_s32(a[6], 5));
c[5] = vcombine_s16(vrshrn_n_s32(a[10], 5), vrshrn_n_s32(a[14], 5));
c[6] = vcombine_s16(vrshrn_n_s32(a[3], 5), vrshrn_n_s32(a[7], 5));
c[7] = vcombine_s16(vrshrn_n_s32(a[11], 5), vrshrn_n_s32(a[15], 5));
}
highbd_add8x8(c, dest, stride, bd);
}