/*
* Copyright (c) 2024, 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.
*/
#include <arm_neon.h>
#include <assert.h>
#include <stdint.h>
#include "config/aom_config.h"
#include "config/aom_dsp_rtcd.h"
#include "aom_dsp/arm/aom_neon_sve_bridge.h"
#include "aom_dsp/arm/aom_filter.h"
#include "aom_dsp/arm/highbd_convolve8_neon.h"
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
DECLARE_ALIGNED(
16,
const uint16_t, kHbdDotProdTbl[
32]) = {
0,
1,
2,
3,
1,
2,
3,
4,
2,
3,
4,
5,
3,
4,
5,
6,
4,
5,
6,
7,
5,
6,
7,
0,
6,
7,
0,
1,
7,
0,
1,
2,
};
// clang-format off
DECLARE_ALIGNED(
16,
const uint16_t, kDeinterleaveTbl[
8]) = {
0,
2,
4,
6,
1,
3,
5,
7,
};
// clang-format on
static inline uint16x4_t highbd_convolve8_4_h(int16x8_t s[
4], int16x8_t filter,
uint16x4_t max) {
int64x2_t sum[
4];
sum[
0] = aom_sdotq_s16(vdupq_n_s64(
0), s[
0], filter);
sum[
1] = aom_sdotq_s16(vdupq_n_s64(
0), s[
1], filter);
sum[
2] = aom_sdotq_s16(vdupq_n_s64(
0), s[
2], filter);
sum[
3] = aom_sdotq_s16(vdupq_n_s64(
0), s[
3], filter);
int64x2_t sum01 = vpaddq_s64(sum[
0], sum[
1]);
int64x2_t sum23 = vpaddq_s64(sum[
2], sum[
3]);
int32x4_t sum0123 = vcombine_s32(vmovn_s64(sum01), vmovn_s64(sum23));
uint16x4_t res = vqrshrun_n_s32(sum0123, FILTER_BITS);
return vmin_u16(res, max);
}
static inline uint16x8_t highbd_convolve8_8_h(int16x8_t s[
8], int16x8_t filter,
uint16x8_t max) {
int64x2_t sum[
8];
sum[
0] = aom_sdotq_s16(vdupq_n_s64(
0), s[
0], filter);
sum[
1] = aom_sdotq_s16(vdupq_n_s64(
0), s[
1], filter);
sum[
2] = aom_sdotq_s16(vdupq_n_s64(
0), s[
2], filter);
sum[
3] = aom_sdotq_s16(vdupq_n_s64(
0), s[
3], filter);
sum[
4] = aom_sdotq_s16(vdupq_n_s64(
0), s[
4], filter);
sum[
5] = aom_sdotq_s16(vdupq_n_s64(
0), s[
5], filter);
sum[
6] = aom_sdotq_s16(vdupq_n_s64(
0), s[
6], filter);
sum[
7] = aom_sdotq_s16(vdupq_n_s64(
0), s[
7], filter);
int64x2_t sum01 = vpaddq_s64(sum[
0], sum[
1]);
int64x2_t sum23 = vpaddq_s64(sum[
2], sum[
3]);
int64x2_t sum45 = vpaddq_s64(sum[
4], sum[
5]);
int64x2_t sum67 = vpaddq_s64(sum[
6], sum[
7]);
int32x4_t sum0123 = vcombine_s32(vmovn_s64(sum01), vmovn_s64(sum23));
int32x4_t sum4567 = vcombine_s32(vmovn_s64(sum45), vmovn_s64(sum67));
uint16x8_t res = vcombine_u16(vqrshrun_n_s32(sum0123, FILTER_BITS),
vqrshrun_n_s32(sum4567, FILTER_BITS));
return vminq_u16(res, max);
}
static inline void highbd_convolve8_horiz_8tap_sve(
const uint16_t *src, ptrdiff_t src_stride, uint16_t *dst,
ptrdiff_t dst_stride,
const int16_t *filter_x,
int width,
int height,
int bd) {
const int16x8_t filter = vld1q_s16(filter_x);
if (width ==
4) {
const uint16x4_t max = vdup_n_u16((
1 << bd) -
1);
const int16_t *s = (
const int16_t *)src;
uint16_t *d = dst;
do {
int16x8_t s0[
4], s1[
4], s2[
4], s3[
4];
load_s16_8x4(s +
0 * src_stride,
1, &s0[
0], &s0[
1], &s0[
2], &s0[
3]);
load_s16_8x4(s +
1 * src_stride,
1, &s1[
0], &s1[
1], &s1[
2], &s1[
3]);
load_s16_8x4(s +
2 * src_stride,
1, &s2[
0], &s2[
1], &s2[
2], &s2[
3]);
load_s16_8x4(s +
3 * src_stride,
1, &s3[
0], &s3[
1], &s3[
2], &s3[
3]);
uint16x4_t d0 = highbd_convolve8_4_h(s0, filter, max);
uint16x4_t d1 = highbd_convolve8_4_h(s1, filter, max);
uint16x4_t d2 = highbd_convolve8_4_h(s2, filter, max);
uint16x4_t d3 = highbd_convolve8_4_h(s3, filter, max);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3);
s +=
4 * src_stride;
d +=
4 * dst_stride;
height -=
4;
}
while (height >
0);
}
else {
do {
const uint16x8_t max = vdupq_n_u16((
1 << bd) -
1);
const int16_t *s = (
const int16_t *)src;
uint16_t *d = dst;
int w = width;
do {
int16x8_t s0[
8], s1[
8], s2[
8], s3[
8];
load_s16_8x8(s +
0 * src_stride,
1, &s0[
0], &s0[
1], &s0[
2], &s0[
3],
&s0[
4], &s0[
5], &s0[
6], &s0[
7]);
load_s16_8x8(s +
1 * src_stride,
1, &s1[
0], &s1[
1], &s1[
2], &s1[
3],
&s1[
4], &s1[
5], &s1[
6], &s1[
7]);
load_s16_8x8(s +
2 * src_stride,
1, &s2[
0], &s2[
1], &s2[
2], &s2[
3],
&s2[
4], &s2[
5], &s2[
6], &s2[
7]);
load_s16_8x8(s +
3 * src_stride,
1, &s3[
0], &s3[
1], &s3[
2], &s3[
3],
&s3[
4], &s3[
5], &s3[
6], &s3[
7]);
uint16x8_t d0 = highbd_convolve8_8_h(s0, filter, max);
uint16x8_t d1 = highbd_convolve8_8_h(s1, filter, max);
uint16x8_t d2 = highbd_convolve8_8_h(s2, filter, max);
uint16x8_t d3 = highbd_convolve8_8_h(s3, filter, max);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3);
s +=
8;
d +=
8;
w -=
8;
}
while (w !=
0);
src +=
4 * src_stride;
dst +=
4 * dst_stride;
height -=
4;
}
while (height >
0);
}
}
static inline uint16x4_t highbd_convolve4_4_h(int16x8_t s, int16x8_t filter,
uint16x8x2_t permute_tbl,
uint16x4_t max) {
int16x8_t permuted_samples0 = aom_tbl_s16(s, permute_tbl.val[
0]);
int16x8_t permuted_samples1 = aom_tbl_s16(s, permute_tbl.val[
1]);
int64x2_t sum0 =
aom_svdot_lane_s16(vdupq_n_s64(
0), permuted_samples0, filter,
0);
int64x2_t sum1 =
aom_svdot_lane_s16(vdupq_n_s64(
0), permuted_samples1, filter,
0);
int32x4_t res_s32 = vcombine_s32(vmovn_s64(sum0), vmovn_s64(sum1));
uint16x4_t res = vqrshrun_n_s32(res_s32, FILTER_BITS);
return vmin_u16(res, max);
}
static inline uint16x8_t highbd_convolve4_8_h(int16x8_t s[
4], int16x8_t filter,
uint16x8_t idx, uint16x8_t max) {
int64x2_t sum04 = aom_svdot_lane_s16(vdupq_n_s64(
0), s[
0], filter,
0);
int64x2_t sum15 = aom_svdot_lane_s16(vdupq_n_s64(
0), s[
1], filter,
0);
int64x2_t sum26 = aom_svdot_lane_s16(vdupq_n_s64(
0), s[
2], filter,
0);
int64x2_t sum37 = aom_svdot_lane_s16(vdupq_n_s64(
0), s[
3], filter,
0);
int32x4_t res0 = vcombine_s32(vmovn_s64(sum04), vmovn_s64(sum15));
int32x4_t res1 = vcombine_s32(vmovn_s64(sum26), vmovn_s64(sum37));
uint16x8_t res = vcombine_u16(vqrshrun_n_s32(res0, FILTER_BITS),
vqrshrun_n_s32(res1, FILTER_BITS));
res = aom_tbl_u16(res, idx);
return vminq_u16(res, max);
}
static inline void highbd_convolve8_horiz_4tap_sve(
const uint16_t *src, ptrdiff_t src_stride, uint16_t *dst,
ptrdiff_t dst_stride,
const int16_t *filter_x,
int width,
int height,
int bd) {
const int16x8_t filter = vcombine_s16(vld1_s16(filter_x +
2), vdup_n_s16(
0));
if (width ==
4) {
const uint16x4_t max = vdup_n_u16((
1 << bd) -
1);
uint16x8x2_t permute_tbl = vld1q_u16_x2(kHbdDotProdTbl);
const int16_t *s = (
const int16_t *)src;
uint16_t *d = dst;
do {
int16x8_t s0, s1, s2, s3;
load_s16_8x4(s, src_stride, &s0, &s1, &s2, &s3);
uint16x4_t d0 = highbd_convolve4_4_h(s0, filter, permute_tbl, max);
uint16x4_t d1 = highbd_convolve4_4_h(s1, filter, permute_tbl, max);
uint16x4_t d2 = highbd_convolve4_4_h(s2, filter, permute_tbl, max);
uint16x4_t d3 = highbd_convolve4_4_h(s3, filter, permute_tbl, max);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3);
s +=
4 * src_stride;
d +=
4 * dst_stride;
height -=
4;
}
while (height >
0);
}
else {
const uint16x8_t max = vdupq_n_u16((
1 << bd) -
1);
uint16x8_t idx = vld1q_u16(kDeinterleaveTbl);
do {
const int16_t *s = (
const int16_t *)src;
uint16_t *d = dst;
int w = width;
do {
int16x8_t s0[
4], s1[
4], s2[
4], s3[
4];
load_s16_8x4(s +
0 * src_stride,
1, &s0[
0], &s0[
1], &s0[
2], &s0[
3]);
load_s16_8x4(s +
1 * src_stride,
1, &s1[
0], &s1[
1], &s1[
2], &s1[
3]);
load_s16_8x4(s +
2 * src_stride,
1, &s2[
0], &s2[
1], &s2[
2], &s2[
3]);
load_s16_8x4(s +
3 * src_stride,
1, &s3[
0], &s3[
1], &s3[
2], &s3[
3]);
uint16x8_t d0 = highbd_convolve4_8_h(s0, filter, idx, max);
uint16x8_t d1 = highbd_convolve4_8_h(s1, filter, idx, max);
uint16x8_t d2 = highbd_convolve4_8_h(s2, filter, idx, max);
uint16x8_t d3 = highbd_convolve4_8_h(s3, filter, idx, max);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3);
s +=
8;
d +=
8;
w -=
8;
}
while (w !=
0);
src +=
4 * src_stride;
dst +=
4 * dst_stride;
height -=
4;
}
while (height >
0);
}
}
void aom_highbd_convolve8_horiz_sve(
const uint8_t *src8, ptrdiff_t src_stride,
uint8_t *dst8, ptrdiff_t dst_stride,
const int16_t *filter_x,
int x_step_q4,
const int16_t *filter_y,
int y_step_q4,
int width,
int height,
int bd) {
assert(x_step_q4 ==
16);
assert(width >=
4 && height >=
4);
(
void)filter_y;
(
void)x_step_q4;
(
void)y_step_q4;
const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
src -= SUBPEL_TAPS /
2 -
1;
const int filter_taps = get_filter_taps_convolve8(filter_x);
if (filter_taps ==
2) {
highbd_convolve8_horiz_2tap_neon(src +
3, src_stride, dst, dst_stride,
filter_x, width, height, bd);
}
else if (filter_taps ==
4) {
highbd_convolve8_horiz_4tap_sve(src +
2, src_stride, dst, dst_stride,
filter_x, width, height, bd);
}
else {
highbd_convolve8_horiz_8tap_sve(src, src_stride, dst, dst_stride, filter_x,
width, height, bd);
}
}
static inline uint16x4_t highbd_convolve8_4_v(int16x8_t samples_lo[
2],
int16x8_t samples_hi[
2],
int16x8_t filter,
uint16x4_t max) {
int64x2_t sum[
2];
sum[
0] = aom_svdot_lane_s16(vdupq_n_s64(
0), samples_lo[
0], filter,
0);
sum[
0] = aom_svdot_lane_s16(sum[
0], samples_hi[
0], filter,
1);
sum[
1] = aom_svdot_lane_s16(vdupq_n_s64(
0), samples_lo[
1], filter,
0);
sum[
1] = aom_svdot_lane_s16(sum[
1], samples_hi[
1], filter,
1);
int32x4_t res_s32 = vcombine_s32(vmovn_s64(sum[
0]), vmovn_s64(sum[
1]));
uint16x4_t res = vqrshrun_n_s32(res_s32, FILTER_BITS);
return vmin_u16(res, max);
}
static inline void highbd_convolve8_vert_8tap_sve(
const uint16_t *src, ptrdiff_t src_stride, uint16_t *dst,
ptrdiff_t dst_stride,
const int16_t *filter_y,
int width,
int height,
int bd) {
const int16x8_t y_filter = vld1q_s16(filter_y);
do {
const uint16x4_t max = vdup_n_u16((
1 << bd) -
1);
int16_t *s = (int16_t *)src;
uint16_t *d = dst;
int h = height;
int16x4_t s0, s1, s2, s3, s4, s5, s6;
load_s16_4x7(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6);
s +=
7 * src_stride;
// This operation combines a conventional transpose and the sample permute
// required before computing the dot product.
int16x8_t s0123[
2], s1234[
2], s2345[
2], s3456[
2];
transpose_concat_elems_s16_4x4(s0, s1, s2, s3, s0123);
transpose_concat_elems_s16_4x4(s1, s2, s3, s4, s1234);
transpose_concat_elems_s16_4x4(s2, s3, s4, s5, s2345);
transpose_concat_elems_s16_4x4(s3, s4, s5, s6, s3456);
do {
int16x4_t s7, s8, s9, s10;
load_s16_4x4(s, src_stride, &s7, &s8, &s9, &s10);
int16x8_t s4567[
2], s5678[
2], s6789[
2], s78910[
2];
// Transpose and shuffle the 4 lines that were loaded.
transpose_concat_elems_s16_4x4(s4, s5, s6, s7, s4567);
transpose_concat_elems_s16_4x4(s5, s6, s7, s8, s5678);
transpose_concat_elems_s16_4x4(s6, s7, s8, s9, s6789);
transpose_concat_elems_s16_4x4(s7, s8, s9, s10, s78910);
uint16x4_t d0 = highbd_convolve8_4_v(s0123, s4567, y_filter, max);
uint16x4_t d1 = highbd_convolve8_4_v(s1234, s5678, y_filter, max);
uint16x4_t d2 = highbd_convolve8_4_v(s2345, s6789, y_filter, max);
uint16x4_t d3 = highbd_convolve8_4_v(s3456, s78910, y_filter, max);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3);
// Prepare block for next iteration - re-using as much as possible.
// Shuffle everything up four rows.
s0123[
0] = s4567[
0];
s0123[
1] = s4567[
1];
s1234[
0] = s5678[
0];
s1234[
1] = s5678[
1];
s2345[
0] = s6789[
0];
s2345[
1] = s6789[
1];
s3456[
0] = s78910[
0];
s3456[
1] = s78910[
1];
s4 = s8;
s5 = s9;
s6 = s10;
s +=
4 * src_stride;
d +=
4 * dst_stride;
h -=
4;
}
while (h !=
0);
src +=
4;
dst +=
4;
width -=
4;
}
while (width !=
0);
}
void aom_highbd_convolve8_vert_sve(
const uint8_t *src8, ptrdiff_t src_stride,
uint8_t *dst8, ptrdiff_t dst_stride,
const int16_t *filter_x,
int x_step_q4,
const int16_t *filter_y,
int y_step_q4,
int width,
int height,
int bd) {
assert(y_step_q4 ==
16);
assert(width >=
4 && height >=
4);
(
void)filter_x;
(
void)y_step_q4;
(
void)x_step_q4;
const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
src -= (SUBPEL_TAPS /
2 -
1) * src_stride;
const int filter_taps = get_filter_taps_convolve8(filter_y);
if (filter_taps ==
2) {
highbd_convolve8_vert_2tap_neon(src +
3 * src_stride, src_stride, dst,
dst_stride, filter_y, width, height, bd);
}
else if (filter_taps ==
4) {
highbd_convolve8_vert_4tap_neon(src +
2 * src_stride, src_stride, dst,
dst_stride, filter_y, width, height, bd);
}
else {
highbd_convolve8_vert_8tap_sve(src, src_stride, dst, dst_stride, filter_y,
width, height, bd);
}
}
