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/*
*
* 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 <stdbool.h>
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/blend.h"
#include "aom_ports/mem.h"
#include "config/av1_rtcd.h"
static inline void diffwtd_mask_highbd_neon(uint8_t *mask, bool inverse,
const uint16_t *src0,
int src0_stride,
const uint16_t *src1,
int src1_stride, int h, int w,
const unsigned int bd) {
assert(DIFF_FACTOR > 0);
uint8x16_t max_alpha = vdupq_n_u8(AOM_BLEND_A64_MAX_ALPHA);
uint8x16_t mask_base = vdupq_n_u8(38);
uint8x16_t mask_diff = vdupq_n_u8(AOM_BLEND_A64_MAX_ALPHA - 38);
if (bd == 8) {
if (w >= 16) {
do {
uint8_t *mask_ptr = mask;
const uint16_t *src0_ptr = src0;
const uint16_t *src1_ptr = src1;
int width = w;
do {
uint16x8_t s0_lo = vld1q_u16(src0_ptr);
uint16x8_t s0_hi = vld1q_u16(src0_ptr + 8);
uint16x8_t s1_lo = vld1q_u16(src1_ptr);
uint16x8_t s1_hi = vld1q_u16(src1_ptr + 8);
uint16x8_t diff_lo_u16 = vabdq_u16(s0_lo, s1_lo);
uint16x8_t diff_hi_u16 = vabdq_u16(s0_hi, s1_hi);
uint8x8_t diff_lo_u8 = vshrn_n_u16(diff_lo_u16, DIFF_FACTOR_LOG2);
uint8x8_t diff_hi_u8 = vshrn_n_u16(diff_hi_u16, DIFF_FACTOR_LOG2);
uint8x16_t diff = vcombine_u8(diff_lo_u8, diff_hi_u8);
uint8x16_t m;
if (inverse) {
m = vqsubq_u8(mask_diff, diff);
} else {
m = vminq_u8(vaddq_u8(diff, mask_base), max_alpha);
}
vst1q_u8(mask_ptr, m);
src0_ptr += 16;
src1_ptr += 16;
mask_ptr += 16;
width -= 16;
} while (width != 0);
mask += w;
src0 += src0_stride;
src1 += src1_stride;
} while (--h != 0);
} else if (w == 8) {
do {
uint8_t *mask_ptr = mask;
const uint16_t *src0_ptr = src0;
const uint16_t *src1_ptr = src1;
int width = w;
do {
uint16x8_t s0 = vld1q_u16(src0_ptr);
uint16x8_t s1 = vld1q_u16(src1_ptr);
uint16x8_t diff_u16 = vabdq_u16(s0, s1);
uint8x8_t diff_u8 = vshrn_n_u16(diff_u16, DIFF_FACTOR_LOG2);
uint8x8_t m;
if (inverse) {
m = vqsub_u8(vget_low_u8(mask_diff), diff_u8);
} else {
m = vmin_u8(vadd_u8(diff_u8, vget_low_u8(mask_base)),
vget_low_u8(max_alpha));
}
vst1_u8(mask_ptr, m);
src0_ptr += 8;
src1_ptr += 8;
mask_ptr += 8;
width -= 8;
} while (width != 0);
mask += w;
src0 += src0_stride;
src1 += src1_stride;
} while (--h != 0);
} else if (w == 4) {
do {
uint16x8_t s0 = load_unaligned_u16_4x2(src0, src0_stride);
uint16x8_t s1 = load_unaligned_u16_4x2(src1, src1_stride);
uint16x8_t diff_u16 = vabdq_u16(s0, s1);
uint8x8_t diff_u8 = vshrn_n_u16(diff_u16, DIFF_FACTOR_LOG2);
uint8x8_t m;
if (inverse) {
m = vqsub_u8(vget_low_u8(mask_diff), diff_u8);
} else {
m = vmin_u8(vadd_u8(diff_u8, vget_low_u8(mask_base)),
vget_low_u8(max_alpha));
}
store_u8x4_strided_x2(mask, w, m);
src0 += 2 * src0_stride;
src1 += 2 * src1_stride;
mask += 2 * w;
h -= 2;
} while (h != 0);
}
} else if (bd == 10) {
if (w >= 16) {
do {
uint8_t *mask_ptr = mask;
const uint16_t *src0_ptr = src0;
const uint16_t *src1_ptr = src1;
int width = w;
do {
uint16x8_t s0_lo = vld1q_u16(src0_ptr);
uint16x8_t s0_hi = vld1q_u16(src0_ptr + 8);
uint16x8_t s1_lo = vld1q_u16(src1_ptr);
uint16x8_t s1_hi = vld1q_u16(src1_ptr + 8);
uint16x8_t diff_lo_u16 = vabdq_u16(s0_lo, s1_lo);
uint16x8_t diff_hi_u16 = vabdq_u16(s0_hi, s1_hi);
uint8x8_t diff_lo_u8 = vshrn_n_u16(diff_lo_u16, 2 + DIFF_FACTOR_LOG2);
uint8x8_t diff_hi_u8 = vshrn_n_u16(diff_hi_u16, 2 + DIFF_FACTOR_LOG2);
uint8x16_t diff = vcombine_u8(diff_lo_u8, diff_hi_u8);
uint8x16_t m;
if (inverse) {
m = vqsubq_u8(mask_diff, diff);
} else {
m = vminq_u8(vaddq_u8(diff, mask_base), max_alpha);
}
vst1q_u8(mask_ptr, m);
src0_ptr += 16;
src1_ptr += 16;
mask_ptr += 16;
width -= 16;
} while (width != 0);
mask += w;
src0 += src0_stride;
src1 += src1_stride;
} while (--h != 0);
} else if (w == 8) {
do {
uint8_t *mask_ptr = mask;
const uint16_t *src0_ptr = src0;
const uint16_t *src1_ptr = src1;
int width = w;
do {
uint16x8_t s0 = vld1q_u16(src0_ptr);
uint16x8_t s1 = vld1q_u16(src1_ptr);
uint16x8_t diff_u16 = vabdq_u16(s0, s1);
uint8x8_t diff_u8 = vshrn_n_u16(diff_u16, 2 + DIFF_FACTOR_LOG2);
uint8x8_t m;
if (inverse) {
m = vqsub_u8(vget_low_u8(mask_diff), diff_u8);
} else {
m = vmin_u8(vadd_u8(diff_u8, vget_low_u8(mask_base)),
vget_low_u8(max_alpha));
}
vst1_u8(mask_ptr, m);
src0_ptr += 8;
src1_ptr += 8;
mask_ptr += 8;
width -= 8;
} while (width != 0);
mask += w;
src0 += src0_stride;
src1 += src1_stride;
} while (--h != 0);
} else if (w == 4) {
do {
uint16x8_t s0 = load_unaligned_u16_4x2(src0, src0_stride);
uint16x8_t s1 = load_unaligned_u16_4x2(src1, src1_stride);
uint16x8_t diff_u16 = vabdq_u16(s0, s1);
uint8x8_t diff_u8 = vshrn_n_u16(diff_u16, 2 + DIFF_FACTOR_LOG2);
uint8x8_t m;
if (inverse) {
m = vqsub_u8(vget_low_u8(mask_diff), diff_u8);
} else {
m = vmin_u8(vadd_u8(diff_u8, vget_low_u8(mask_base)),
vget_low_u8(max_alpha));
}
store_u8x4_strided_x2(mask, w, m);
src0 += 2 * src0_stride;
src1 += 2 * src1_stride;
mask += 2 * w;
h -= 2;
} while (h != 0);
}
} else {
assert(bd == 12);
if (w >= 16) {
do {
uint8_t *mask_ptr = mask;
const uint16_t *src0_ptr = src0;
const uint16_t *src1_ptr = src1;
int width = w;
do {
uint16x8_t s0_lo = vld1q_u16(src0_ptr);
uint16x8_t s0_hi = vld1q_u16(src0_ptr + 8);
uint16x8_t s1_lo = vld1q_u16(src1_ptr);
uint16x8_t s1_hi = vld1q_u16(src1_ptr + 8);
uint16x8_t diff_lo_u16 = vabdq_u16(s0_lo, s1_lo);
uint16x8_t diff_hi_u16 = vabdq_u16(s0_hi, s1_hi);
uint8x8_t diff_lo_u8 = vshrn_n_u16(diff_lo_u16, 4 + DIFF_FACTOR_LOG2);
uint8x8_t diff_hi_u8 = vshrn_n_u16(diff_hi_u16, 4 + DIFF_FACTOR_LOG2);
uint8x16_t diff = vcombine_u8(diff_lo_u8, diff_hi_u8);
uint8x16_t m;
if (inverse) {
m = vqsubq_u8(mask_diff, diff);
} else {
m = vminq_u8(vaddq_u8(diff, mask_base), max_alpha);
}
vst1q_u8(mask_ptr, m);
src0_ptr += 16;
src1_ptr += 16;
mask_ptr += 16;
width -= 16;
} while (width != 0);
mask += w;
src0 += src0_stride;
src1 += src1_stride;
} while (--h != 0);
} else if (w == 8) {
do {
uint8_t *mask_ptr = mask;
const uint16_t *src0_ptr = src0;
const uint16_t *src1_ptr = src1;
int width = w;
do {
uint16x8_t s0 = vld1q_u16(src0_ptr);
uint16x8_t s1 = vld1q_u16(src1_ptr);
uint16x8_t diff_u16 = vabdq_u16(s0, s1);
uint8x8_t diff_u8 = vshrn_n_u16(diff_u16, 4 + DIFF_FACTOR_LOG2);
uint8x8_t m;
if (inverse) {
m = vqsub_u8(vget_low_u8(mask_diff), diff_u8);
} else {
m = vmin_u8(vadd_u8(diff_u8, vget_low_u8(mask_base)),
vget_low_u8(max_alpha));
}
vst1_u8(mask_ptr, m);
src0_ptr += 8;
src1_ptr += 8;
mask_ptr += 8;
width -= 8;
} while (width != 0);
mask += w;
src0 += src0_stride;
src1 += src1_stride;
} while (--h != 0);
} else if (w == 4) {
do {
uint16x8_t s0 = load_unaligned_u16_4x2(src0, src0_stride);
uint16x8_t s1 = load_unaligned_u16_4x2(src1, src1_stride);
uint16x8_t diff_u16 = vabdq_u16(s0, s1);
uint8x8_t diff_u8 = vshrn_n_u16(diff_u16, 4 + DIFF_FACTOR_LOG2);
uint8x8_t m;
if (inverse) {
m = vqsub_u8(vget_low_u8(mask_diff), diff_u8);
} else {
m = vmin_u8(vadd_u8(diff_u8, vget_low_u8(mask_base)),
vget_low_u8(max_alpha));
}
store_u8x4_strided_x2(mask, w, m);
src0 += 2 * src0_stride;
src1 += 2 * src1_stride;
mask += 2 * w;
h -= 2;
} while (h != 0);
}
}
}
void av1_build_compound_diffwtd_mask_highbd_neon(
uint8_t *mask, DIFFWTD_MASK_TYPE mask_type, const uint8_t *src0,
int src0_stride, const uint8_t *src1, int src1_stride, int h, int w,
int bd) {
assert(h % 4 == 0);
assert(w % 4 == 0);
assert(mask_type == DIFFWTD_38_INV || mask_type == DIFFWTD_38);
if (mask_type == DIFFWTD_38) {
diffwtd_mask_highbd_neon(mask, /*inverse=*/false, CONVERT_TO_SHORTPTR(src0),
src0_stride, CONVERT_TO_SHORTPTR(src1),
src1_stride, h, w, bd);
} else { // mask_type == DIFFWTD_38_INV
diffwtd_mask_highbd_neon(mask, /*inverse=*/true, CONVERT_TO_SHORTPTR(src0),
src0_stride, CONVERT_TO_SHORTPTR(src1),
src1_stride, h, w, bd);
}
}