/*
* Copyright (c) 2014 The WebM project authors. All rights reserved.
* Copyright (c) 2023, 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 "config/aom_config.h"
#include "config/aom_dsp_rtcd.h"
#include "aom/aom_integer.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/aom_filter.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"
#include "aom_ports/mem.h"
static inline uint16x4_t highbd_convolve8_4(
const int16x4_t s0,
const int16x4_t s1,
const int16x4_t s2,
const int16x4_t s3,
const int16x4_t s4,
const int16x4_t s5,
const int16x4_t s6,
const int16x4_t s7,
const int16x8_t filter,
const uint16x4_t max) {
const int16x4_t filter_lo = vget_low_s16(filter);
const int16x4_t filter_hi = vget_high_s16(filter);
int32x4_t sum = vmull_lane_s16(s0, filter_lo, 0);
sum = vmlal_lane_s16(sum, s1, filter_lo, 1);
sum = vmlal_lane_s16(sum, s2, filter_lo, 2);
sum = vmlal_lane_s16(sum, s3, filter_lo, 3);
sum = vmlal_lane_s16(sum, s4, filter_hi, 0);
sum = vmlal_lane_s16(sum, s5, filter_hi, 1);
sum = vmlal_lane_s16(sum, s6, filter_hi, 2);
sum = vmlal_lane_s16(sum, s7, filter_hi, 3);
uint16x4_t res = vqrshrun_n_s32(sum, FILTER_BITS);
return vmin_u16(res, max);
}
static inline uint16x8_t highbd_convolve8_8(
const int16x8_t s0,
const int16x8_t s1,
const int16x8_t s2,
const int16x8_t s3,
const int16x8_t s4,
const int16x8_t s5,
const int16x8_t s6,
const int16x8_t s7,
const int16x8_t filter,
const uint16x8_t max) {
const int16x4_t filter_lo = vget_low_s16(filter);
const int16x4_t filter_hi = vget_high_s16(filter);
int32x4_t sum0 = vmull_lane_s16(vget_low_s16(s0), filter_lo, 0);
sum0 = vmlal_lane_s16(sum0, vget_low_s16(s1), filter_lo, 1);
sum0 = vmlal_lane_s16(sum0, vget_low_s16(s2), filter_lo, 2);
sum0 = vmlal_lane_s16(sum0, vget_low_s16(s3), filter_lo, 3);
sum0 = vmlal_lane_s16(sum0, vget_low_s16(s4), filter_hi, 0);
sum0 = vmlal_lane_s16(sum0, vget_low_s16(s5), filter_hi, 1);
sum0 = vmlal_lane_s16(sum0, vget_low_s16(s6), filter_hi, 2);
sum0 = vmlal_lane_s16(sum0, vget_low_s16(s7), filter_hi, 3);
int32x4_t sum1 = vmull_lane_s16(vget_high_s16(s0), filter_lo, 0);
sum1 = vmlal_lane_s16(sum1, vget_high_s16(s1), filter_lo, 1);
sum1 = vmlal_lane_s16(sum1, vget_high_s16(s2), filter_lo, 2);
sum1 = vmlal_lane_s16(sum1, vget_high_s16(s3), filter_lo, 3);
sum1 = vmlal_lane_s16(sum1, vget_high_s16(s4), filter_hi, 0);
sum1 = vmlal_lane_s16(sum1, vget_high_s16(s5), filter_hi, 1);
sum1 = vmlal_lane_s16(sum1, vget_high_s16(s6), filter_hi, 2);
sum1 = vmlal_lane_s16(sum1, vget_high_s16(s7), filter_hi, 3);
uint16x8_t res = vcombine_u16(vqrshrun_n_s32(sum0, FILTER_BITS),
vqrshrun_n_s32(sum1, FILTER_BITS));
return vminq_u16(res, max);
}
static void highbd_convolve_horiz_8tap_neon(
const uint16_t *src_ptr, ptrdiff_t src_stride, uint16_t *dst_ptr,
ptrdiff_t dst_stride,
const int16_t *x_filter_ptr,
int w,
int h,
int bd) {
assert(w >= 4 && h >= 4);
const int16x8_t x_filter = vld1q_s16(x_filter_ptr);
if (w == 4) {
const uint16x4_t max = vdup_n_u16((1 << bd) - 1);
const int16_t *s = (
const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
do {
int16x4_t s0[8], s1[8], s2[8], s3[8];
load_s16_4x8(s + 0 * src_stride, 1, &s0[0], &s0[1], &s0[2], &s0[3],
&s0[4], &s0[5], &s0[6], &s0[7]);
load_s16_4x8(s + 1 * src_stride, 1, &s1[0], &s1[1], &s1[2], &s1[3],
&s1[4], &s1[5], &s1[6], &s1[7]);
load_s16_4x8(s + 2 * src_stride, 1, &s2[0], &s2[1], &s2[2], &s2[3],
&s2[4], &s2[5], &s2[6], &s2[7]);
load_s16_4x8(s + 3 * src_stride, 1, &s3[0], &s3[1], &s3[2], &s3[3],
&s3[4], &s3[5], &s3[6], &s3[7]);
uint16x4_t d0 = highbd_convolve8_4(s0[0], s0[1], s0[2], s0[3], s0[4],
s0[5], s0[6], s0[7], x_filter, max);
uint16x4_t d1 = highbd_convolve8_4(s1[0], s1[1], s1[2], s1[3], s1[4],
s1[5], s1[6], s1[7], x_filter, max);
uint16x4_t d2 = highbd_convolve8_4(s2[0], s2[1], s2[2], s2[3], s2[4],
s2[5], s2[6], s2[7], x_filter, max);
uint16x4_t d3 = highbd_convolve8_4(s3[0], s3[1], s3[2], s3[3], s3[4],
s3[5], s3[6], s3[7], x_filter, max);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3);
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
}
while (h > 0);
}
else {
const uint16x8_t max = vdupq_n_u16((1 << bd) - 1);
int height = h;
do {
int width = w;
const int16_t *s = (
const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
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(s0[0], s0[1], s0[2], s0[3], s0[4],
s0[5], s0[6], s0[7], x_filter, max);
uint16x8_t d1 = highbd_convolve8_8(s1[0], s1[1], s1[2], s1[3], s1[4],
s1[5], s1[6], s1[7], x_filter, max);
uint16x8_t d2 = highbd_convolve8_8(s2[0], s2[1], s2[2], s2[3], s2[4],
s2[5], s2[6], s2[7], x_filter, max);
uint16x8_t d3 = highbd_convolve8_8(s3[0], s3[1], s3[2], s3[3], s3[4],
s3[5], s3[6], s3[7], x_filter, max);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3);
s += 8;
d += 8;
width -= 8;
}
while (width > 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
height -= 4;
}
while (height > 0);
}
}
static void highbd_convolve_horiz_4tap_neon(
const uint16_t *src_ptr, ptrdiff_t src_stride, uint16_t *dst_ptr,
ptrdiff_t dst_stride,
const int16_t *x_filter_ptr,
int w,
int h,
int bd) {
assert(w >= 4 && h >= 4);
const int16x4_t x_filter = vld1_s16(x_filter_ptr + 2);
if (w == 4) {
const uint16x4_t max = vdup_n_u16((1 << bd) - 1);
const int16_t *s = (
const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
do {
int16x4_t s0[4], s1[4], s2[4], s3[4];
load_s16_4x4(s + 0 * src_stride, 1, &s0[0], &s0[1], &s0[2], &s0[3]);
load_s16_4x4(s + 1 * src_stride, 1, &s1[0], &s1[1], &s1[2], &s1[3]);
load_s16_4x4(s + 2 * src_stride, 1, &s2[0], &s2[1], &s2[2], &s2[3]);
load_s16_4x4(s + 3 * src_stride, 1, &s3[0], &s3[1], &s3[2], &s3[3]);
uint16x4_t d0 =
highbd_convolve4_4(s0[0], s0[1], s0[2], s0[3], x_filter, max);
uint16x4_t d1 =
highbd_convolve4_4(s1[0], s1[1], s1[2], s1[3], x_filter, max);
uint16x4_t d2 =
highbd_convolve4_4(s2[0], s2[1], s2[2], s2[3], x_filter, max);
uint16x4_t d3 =
highbd_convolve4_4(s3[0], s3[1], s3[2], s3[3], x_filter, max);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3);
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
}
while (h > 0);
}
else {
const uint16x8_t max = vdupq_n_u16((1 << bd) - 1);
int height = h;
do {
int width = w;
const int16_t *s = (
const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
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(s0[0], s0[1], s0[2], s0[3], x_filter, max);
uint16x8_t d1 =
highbd_convolve4_8(s1[0], s1[1], s1[2], s1[3], x_filter, max);
uint16x8_t d2 =
highbd_convolve4_8(s2[0], s2[1], s2[2], s2[3], x_filter, max);
uint16x8_t d3 =
highbd_convolve4_8(s3[0], s3[1], s3[2], s3[3], x_filter, max);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3);
s += 8;
d += 8;
width -= 8;
}
while (width > 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
height -= 4;
}
while (height > 0);
}
}
void aom_highbd_convolve8_horiz_neon(
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 w,
int h,
int bd) {
if (x_step_q4 != 16) {
aom_highbd_convolve8_horiz_c(src8, src_stride, dst8, dst_stride, filter_x,
x_step_q4, filter_y, y_step_q4, w, h, bd);
}
else {
(
void)filter_y;
(
void)y_step_q4;
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, w, h, bd);
}
else if (filter_taps == 4) {
highbd_convolve_horiz_4tap_neon(src + 2, src_stride, dst, dst_stride,
filter_x, w, h, bd);
}
else {
highbd_convolve_horiz_8tap_neon(src, src_stride, dst, dst_stride,
filter_x, w, h, bd);
}
}
}
static void highbd_convolve_vert_8tap_neon(
const uint16_t *src_ptr, ptrdiff_t src_stride, uint16_t *dst_ptr,
ptrdiff_t dst_stride,
const int16_t *y_filter_ptr,
int w,
int h,
int bd) {
assert(w >= 4 && h >= 4);
const int16x8_t y_filter = vld1q_s16(y_filter_ptr);
if (w == 4) {
const uint16x4_t max = vdup_n_u16((1 << bd) - 1);
const int16_t *s = (
const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
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;
do {
int16x4_t s7, s8, s9, s10;
load_s16_4x4(s, src_stride, &s7, &s8, &s9, &s10);
uint16x4_t d0 =
highbd_convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, max);
uint16x4_t d1 =
highbd_convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, max);
uint16x4_t d2 =
highbd_convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, max);
uint16x4_t d3 =
highbd_convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, max);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
}
while (h > 0);
}
else {
const uint16x8_t max = vdupq_n_u16((1 << bd) - 1);
do {
int height = h;
const int16_t *s = (
const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
int16x8_t s0, s1, s2, s3, s4, s5, s6;
load_s16_8x7(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6);
s += 7 * src_stride;
do {
int16x8_t s7, s8, s9, s10;
load_s16_8x4(s, src_stride, &s7, &s8, &s9, &s10);
uint16x8_t d0 =
highbd_convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, max);
uint16x8_t d1 =
highbd_convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, max);
uint16x8_t d2 =
highbd_convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, max);
uint16x8_t d3 =
highbd_convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, max);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
}
while (height > 0);
src_ptr += 8;
dst_ptr += 8;
w -= 8;
}
while (w > 0);
}
}
void aom_highbd_convolve8_vert_neon(
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 w,
int h,
int bd) {
if (y_step_q4 != 16) {
aom_highbd_convolve8_vert_c(src8, src_stride, dst8, dst_stride, filter_x,
x_step_q4, filter_y, y_step_q4, w, h, bd);
}
else {
(
void)filter_x;
(
void)x_step_q4;
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, w, h, bd);
}
else if (filter_taps == 4) {
highbd_convolve8_vert_4tap_neon(src + 2 * src_stride, src_stride, dst,
dst_stride, filter_y, w, h, bd);
}
else {
highbd_convolve_vert_8tap_neon(src, src_stride, dst, dst_stride, filter_y,
w, h, bd);
}
}
}
