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/*
* 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/mem_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
#include "aom_ports/mem.h"
static INLINE int32x4_t highbd_convolve8_4_s32(
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 y_filter) {
const int16x4_t y_filter_lo = vget_low_s16(y_filter);
const int16x4_t y_filter_hi = vget_high_s16(y_filter);
int32x4_t sum = vmull_lane_s16(s0, y_filter_lo, 0);
sum = vmlal_lane_s16(sum, s1, y_filter_lo, 1);
sum = vmlal_lane_s16(sum, s2, y_filter_lo, 2);
sum = vmlal_lane_s16(sum, s3, y_filter_lo, 3);
sum = vmlal_lane_s16(sum, s4, y_filter_hi, 0);
sum = vmlal_lane_s16(sum, s5, y_filter_hi, 1);
sum = vmlal_lane_s16(sum, s6, y_filter_hi, 2);
sum = vmlal_lane_s16(sum, s7, y_filter_hi, 3);
return sum;
}
static INLINE uint16x4_t highbd_convolve8_4_s32_s16(
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 y_filter) {
int32x4_t sum =
highbd_convolve8_4_s32(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
return vqrshrun_n_s32(sum, FILTER_BITS);
}
static INLINE int32x4_t highbd_convolve8_horiz4_s32(
const int16x8_t s0, const int16x8_t s1, const int16x8_t x_filter_0_7) {
const int16x8_t s2 = vextq_s16(s0, s1, 1);
const int16x8_t s3 = vextq_s16(s0, s1, 2);
const int16x8_t s4 = vextq_s16(s0, s1, 3);
const int16x4_t s0_lo = vget_low_s16(s0);
const int16x4_t s1_lo = vget_low_s16(s2);
const int16x4_t s2_lo = vget_low_s16(s3);
const int16x4_t s3_lo = vget_low_s16(s4);
const int16x4_t s4_lo = vget_high_s16(s0);
const int16x4_t s5_lo = vget_high_s16(s2);
const int16x4_t s6_lo = vget_high_s16(s3);
const int16x4_t s7_lo = vget_high_s16(s4);
return highbd_convolve8_4_s32(s0_lo, s1_lo, s2_lo, s3_lo, s4_lo, s5_lo, s6_lo,
s7_lo, x_filter_0_7);
}
static INLINE uint16x4_t highbd_convolve8_horiz4_s32_s16(
const int16x8_t s0, const int16x8_t s1, const int16x8_t x_filter_0_7) {
int32x4_t sum = highbd_convolve8_horiz4_s32(s0, s1, x_filter_0_7);
return vqrshrun_n_s32(sum, FILTER_BITS);
}
static INLINE void highbd_convolve8_8_s32(
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 y_filter,
int32x4_t *sum0, int32x4_t *sum1) {
const int16x4_t y_filter_lo = vget_low_s16(y_filter);
const int16x4_t y_filter_hi = vget_high_s16(y_filter);
*sum0 = vmull_lane_s16(vget_low_s16(s0), y_filter_lo, 0);
*sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s1), y_filter_lo, 1);
*sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s2), y_filter_lo, 2);
*sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s3), y_filter_lo, 3);
*sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s4), y_filter_hi, 0);
*sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s5), y_filter_hi, 1);
*sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s6), y_filter_hi, 2);
*sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s7), y_filter_hi, 3);
*sum1 = vmull_lane_s16(vget_high_s16(s0), y_filter_lo, 0);
*sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s1), y_filter_lo, 1);
*sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s2), y_filter_lo, 2);
*sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s3), y_filter_lo, 3);
*sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s4), y_filter_hi, 0);
*sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s5), y_filter_hi, 1);
*sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s6), y_filter_hi, 2);
*sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s7), y_filter_hi, 3);
}
static INLINE void highbd_convolve8_horiz8_s32(const int16x8_t s0,
const int16x8_t s0_hi,
const int16x8_t x_filter_0_7,
int32x4_t *sum0,
int32x4_t *sum1) {
const int16x8_t s1 = vextq_s16(s0, s0_hi, 1);
const int16x8_t s2 = vextq_s16(s0, s0_hi, 2);
const int16x8_t s3 = vextq_s16(s0, s0_hi, 3);
const int16x8_t s4 = vextq_s16(s0, s0_hi, 4);
const int16x8_t s5 = vextq_s16(s0, s0_hi, 5);
const int16x8_t s6 = vextq_s16(s0, s0_hi, 6);
const int16x8_t s7 = vextq_s16(s0, s0_hi, 7);
highbd_convolve8_8_s32(s0, s1, s2, s3, s4, s5, s6, s7, x_filter_0_7, sum0,
sum1);
}
static INLINE uint16x8_t highbd_convolve8_horiz8_s32_s16(
const int16x8_t s0, const int16x8_t s1, const int16x8_t x_filter_0_7) {
int32x4_t sum0, sum1;
highbd_convolve8_horiz8_s32(s0, s1, x_filter_0_7, &sum0, &sum1);
return vcombine_u16(vqrshrun_n_s32(sum0, FILTER_BITS),
vqrshrun_n_s32(sum1, FILTER_BITS));
}
static INLINE uint16x8_t highbd_convolve8_8_s32_s16(
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 y_filter) {
int32x4_t sum0;
int32x4_t sum1;
highbd_convolve8_8_s32(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, &sum0,
&sum1);
return vcombine_u16(vqrshrun_n_s32(sum0, FILTER_BITS),
vqrshrun_n_s32(sum1, FILTER_BITS));
}
static void highbd_convolve_horiz_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 x_step_q4, int w, int h, int bd) {
assert(w >= 4 && h >= 4);
const uint16x8_t max = vdupq_n_u16((1 << bd) - 1);
const int16x8_t x_filter = vld1q_s16(x_filter_ptr);
if (w == 4) {
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
do {
int16x8_t s0, s1, s2, s3;
load_s16_8x2(s, src_stride, &s0, &s2);
load_s16_8x2(s + 8, src_stride, &s1, &s3);
uint16x4_t d0 = highbd_convolve8_horiz4_s32_s16(s0, s1, x_filter);
uint16x4_t d1 = highbd_convolve8_horiz4_s32_s16(s2, s3, x_filter);
uint16x8_t d01 = vcombine_u16(d0, d1);
d01 = vminq_u16(d01, max);
vst1_u16(d + 0 * dst_stride, vget_low_u16(d01));
vst1_u16(d + 1 * dst_stride, vget_high_u16(d01));
s += 2 * src_stride;
d += 2 * dst_stride;
h -= 2;
} while (h > 0);
} else {
int height = h;
do {
int width = w;
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
int x_q4 = 0;
const int16_t *src_x = &s[x_q4 >> SUBPEL_BITS];
int16x8_t s0, s2, s4, s6;
load_s16_8x4(src_x, src_stride, &s0, &s2, &s4, &s6);
src_x += 8;
do {
int16x8_t s1, s3, s5, s7;
load_s16_8x4(src_x, src_stride, &s1, &s3, &s5, &s7);
uint16x8_t d0 = highbd_convolve8_horiz8_s32_s16(s0, s1, x_filter);
uint16x8_t d1 = highbd_convolve8_horiz8_s32_s16(s2, s3, x_filter);
uint16x8_t d2 = highbd_convolve8_horiz8_s32_s16(s4, s5, x_filter);
uint16x8_t d3 = highbd_convolve8_horiz8_s32_s16(s6, s7, x_filter);
d0 = vminq_u16(d0, max);
d1 = vminq_u16(d1, max);
d2 = vminq_u16(d2, max);
d3 = vminq_u16(d3, max);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3);
s0 = s1;
s2 = s3;
s4 = s5;
s6 = s7;
src_x += 8;
d += 8;
width -= 8;
x_q4 += 8 * x_step_q4;
} 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;
highbd_convolve_horiz_neon(src, src_stride, dst, dst_stride, filter_x,
x_step_q4, w, h, bd);
}
}
static void highbd_convolve_vert_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);
const uint16x8_t max = vdupq_n_u16((1 << bd) - 1);
if (w == 4) {
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_s32_s16(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
uint16x4_t d1 =
highbd_convolve8_4_s32_s16(s1, s2, s3, s4, s5, s6, s7, s8, y_filter);
uint16x4_t d2 =
highbd_convolve8_4_s32_s16(s2, s3, s4, s5, s6, s7, s8, s9, y_filter);
uint16x4_t d3 =
highbd_convolve8_4_s32_s16(s3, s4, s5, s6, s7, s8, s9, s10, y_filter);
uint16x8_t d01 = vcombine_u16(d0, d1);
uint16x8_t d23 = vcombine_u16(d2, d3);
d01 = vminq_u16(d01, max);
d23 = vminq_u16(d23, max);
vst1_u16(d + 0 * dst_stride, vget_low_u16(d01));
vst1_u16(d + 1 * dst_stride, vget_high_u16(d01));
vst1_u16(d + 2 * dst_stride, vget_low_u16(d23));
vst1_u16(d + 3 * dst_stride, vget_high_u16(d23));
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 {
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_s32_s16(s0, s1, s2, s3, s4, s5, s6,
s7, y_filter);
uint16x8_t d1 = highbd_convolve8_8_s32_s16(s1, s2, s3, s4, s5, s6, s7,
s8, y_filter);
uint16x8_t d2 = highbd_convolve8_8_s32_s16(s2, s3, s4, s5, s6, s7, s8,
s9, y_filter);
uint16x8_t d3 = highbd_convolve8_8_s32_s16(s3, s4, s5, s6, s7, s8, s9,
s10, y_filter);
d0 = vminq_u16(d0, max);
d1 = vminq_u16(d1, max);
d2 = vminq_u16(d2, max);
d3 = vminq_u16(d3, 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;
highbd_convolve_vert_neon(src, src_stride, dst, dst_stride, filter_y, w, h,
bd);
}
}