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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 "config/aom_dsp_rtcd.h"
#include "aom_dsp/arm/blend_neon.h"
#include "aom_dsp/arm/dist_wtd_avg_neon.h"
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/blend.h"
void aom_comp_avg_pred_neon(uint8_t *comp_pred, const uint8_t *pred, int width,
int height, const uint8_t *ref, int ref_stride) {
if (width > 8) {
do {
const uint8_t *pred_ptr = pred;
const uint8_t *ref_ptr = ref;
uint8_t *comp_pred_ptr = comp_pred;
int w = width;
do {
const uint8x16_t p = vld1q_u8(pred_ptr);
const uint8x16_t r = vld1q_u8(ref_ptr);
const uint8x16_t avg = vrhaddq_u8(p, r);
vst1q_u8(comp_pred_ptr, avg);
ref_ptr += 16;
pred_ptr += 16;
comp_pred_ptr += 16;
w -= 16;
} while (w != 0);
ref += ref_stride;
pred += width;
comp_pred += width;
} while (--height != 0);
} else if (width == 8) {
int h = height / 2;
do {
const uint8x16_t p = vld1q_u8(pred);
const uint8x16_t r = load_u8_8x2(ref, ref_stride);
const uint8x16_t avg = vrhaddq_u8(p, r);
vst1q_u8(comp_pred, avg);
ref += 2 * ref_stride;
pred += 16;
comp_pred += 16;
} while (--h != 0);
} else {
int h = height / 4;
assert(width == 4);
do {
const uint8x16_t p = vld1q_u8(pred);
const uint8x16_t r = load_unaligned_u8q(ref, ref_stride);
const uint8x16_t avg = vrhaddq_u8(p, r);
vst1q_u8(comp_pred, avg);
ref += 4 * ref_stride;
pred += 16;
comp_pred += 16;
} while (--h != 0);
}
}
void aom_dist_wtd_comp_avg_pred_neon(uint8_t *comp_pred, const uint8_t *pred,
int width, int height, const uint8_t *ref,
int ref_stride,
const DIST_WTD_COMP_PARAMS *jcp_param) {
const uint8x16_t fwd_offset = vdupq_n_u8(jcp_param->fwd_offset);
const uint8x16_t bck_offset = vdupq_n_u8(jcp_param->bck_offset);
if (width > 8) {
do {
const uint8_t *pred_ptr = pred;
const uint8_t *ref_ptr = ref;
uint8_t *comp_pred_ptr = comp_pred;
int w = width;
do {
const uint8x16_t p = vld1q_u8(pred_ptr);
const uint8x16_t r = vld1q_u8(ref_ptr);
const uint8x16_t wtd_avg =
dist_wtd_avg_u8x16(r, p, fwd_offset, bck_offset);
vst1q_u8(comp_pred_ptr, wtd_avg);
ref_ptr += 16;
pred_ptr += 16;
comp_pred_ptr += 16;
w -= 16;
} while (w != 0);
ref += ref_stride;
pred += width;
comp_pred += width;
} while (--height != 0);
} else if (width == 8) {
int h = height / 2;
do {
const uint8x16_t p = vld1q_u8(pred);
const uint8x16_t r = load_u8_8x2(ref, ref_stride);
const uint8x16_t wtd_avg =
dist_wtd_avg_u8x16(r, p, fwd_offset, bck_offset);
vst1q_u8(comp_pred, wtd_avg);
ref += 2 * ref_stride;
pred += 16;
comp_pred += 16;
} while (--h != 0);
} else {
int h = height / 2;
assert(width == 4);
do {
const uint8x8_t p = vld1_u8(pred);
const uint8x8_t r = load_unaligned_u8_4x2(ref, ref_stride);
const uint8x8_t wtd_avg = dist_wtd_avg_u8x8(r, p, vget_low_u8(fwd_offset),
vget_low_u8(bck_offset));
vst1_u8(comp_pred, wtd_avg);
ref += 2 * ref_stride;
pred += 8;
comp_pred += 8;
} while (--h != 0);
}
}
void aom_comp_mask_pred_neon(uint8_t *comp_pred, const uint8_t *pred, int width,
int height, const uint8_t *ref, int ref_stride,
const uint8_t *mask, int mask_stride,
int invert_mask) {
const uint8_t *src0 = invert_mask ? pred : ref;
const uint8_t *src1 = invert_mask ? ref : pred;
const int src_stride0 = invert_mask ? width : ref_stride;
const int src_stride1 = invert_mask ? ref_stride : width;
if (width > 8) {
do {
const uint8_t *src0_ptr = src0;
const uint8_t *src1_ptr = src1;
const uint8_t *mask_ptr = mask;
uint8_t *comp_pred_ptr = comp_pred;
int w = width;
do {
const uint8x16_t s0 = vld1q_u8(src0_ptr);
const uint8x16_t s1 = vld1q_u8(src1_ptr);
const uint8x16_t m0 = vld1q_u8(mask_ptr);
uint8x16_t blend_u8 = alpha_blend_a64_u8x16(m0, s0, s1);
vst1q_u8(comp_pred_ptr, blend_u8);
src0_ptr += 16;
src1_ptr += 16;
mask_ptr += 16;
comp_pred_ptr += 16;
w -= 16;
} while (w != 0);
src0 += src_stride0;
src1 += src_stride1;
mask += mask_stride;
comp_pred += width;
} while (--height != 0);
} else if (width == 8) {
do {
const uint8x8_t s0 = vld1_u8(src0);
const uint8x8_t s1 = vld1_u8(src1);
const uint8x8_t m0 = vld1_u8(mask);
uint8x8_t blend_u8 = alpha_blend_a64_u8x8(m0, s0, s1);
vst1_u8(comp_pred, blend_u8);
src0 += src_stride0;
src1 += src_stride1;
mask += mask_stride;
comp_pred += 8;
} while (--height != 0);
} else {
int h = height / 2;
assert(width == 4);
do {
const uint8x8_t s0 = load_unaligned_u8(src0, src_stride0);
const uint8x8_t s1 = load_unaligned_u8(src1, src_stride1);
const uint8x8_t m0 = load_unaligned_u8(mask, mask_stride);
uint8x8_t blend_u8 = alpha_blend_a64_u8x8(m0, s0, s1);
vst1_u8(comp_pred, blend_u8);
src0 += 2 * src_stride0;
src1 += 2 * src_stride1;
mask += 2 * mask_stride;
comp_pred += 8;
} while (--h != 0);
}
}
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