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/*
* Copyright (c) 2023 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <arm_neon.h>
#include <stdint.h>
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/arm/sum_neon.h"
static INLINE void highbd_sse_8x1_init_neon(const uint16_t *src,
const uint16_t *ref,
uint32x4_t *sse_acc0,
uint32x4_t *sse_acc1) {
uint16x8_t s = vld1q_u16(src);
uint16x8_t r = vld1q_u16(ref);
uint16x8_t abs_diff = vabdq_u16(s, r);
uint16x4_t abs_diff_lo = vget_low_u16(abs_diff);
uint16x4_t abs_diff_hi = vget_high_u16(abs_diff);
*sse_acc0 = vmull_u16(abs_diff_lo, abs_diff_lo);
*sse_acc1 = vmull_u16(abs_diff_hi, abs_diff_hi);
}
static INLINE void highbd_sse_8x1_neon(const uint16_t *src, const uint16_t *ref,
uint32x4_t *sse_acc0,
uint32x4_t *sse_acc1) {
uint16x8_t s = vld1q_u16(src);
uint16x8_t r = vld1q_u16(ref);
uint16x8_t abs_diff = vabdq_u16(s, r);
uint16x4_t abs_diff_lo = vget_low_u16(abs_diff);
uint16x4_t abs_diff_hi = vget_high_u16(abs_diff);
*sse_acc0 = vmlal_u16(*sse_acc0, abs_diff_lo, abs_diff_lo);
*sse_acc1 = vmlal_u16(*sse_acc1, abs_diff_hi, abs_diff_hi);
}
static INLINE int64_t highbd_sse_64xh_neon(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int height) {
uint32x4_t sse[8];
highbd_sse_8x1_init_neon(src + 0 * 8, ref + 0 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_init_neon(src + 1 * 8, ref + 1 * 8, &sse[2], &sse[3]);
highbd_sse_8x1_init_neon(src + 2 * 8, ref + 2 * 8, &sse[4], &sse[5]);
highbd_sse_8x1_init_neon(src + 3 * 8, ref + 3 * 8, &sse[6], &sse[7]);
highbd_sse_8x1_neon(src + 4 * 8, ref + 4 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_neon(src + 5 * 8, ref + 5 * 8, &sse[2], &sse[3]);
highbd_sse_8x1_neon(src + 6 * 8, ref + 6 * 8, &sse[4], &sse[5]);
highbd_sse_8x1_neon(src + 7 * 8, ref + 7 * 8, &sse[6], &sse[7]);
src += src_stride;
ref += ref_stride;
while (--height != 0) {
highbd_sse_8x1_neon(src + 0 * 8, ref + 0 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_neon(src + 1 * 8, ref + 1 * 8, &sse[2], &sse[3]);
highbd_sse_8x1_neon(src + 2 * 8, ref + 2 * 8, &sse[4], &sse[5]);
highbd_sse_8x1_neon(src + 3 * 8, ref + 3 * 8, &sse[6], &sse[7]);
highbd_sse_8x1_neon(src + 4 * 8, ref + 4 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_neon(src + 5 * 8, ref + 5 * 8, &sse[2], &sse[3]);
highbd_sse_8x1_neon(src + 6 * 8, ref + 6 * 8, &sse[4], &sse[5]);
highbd_sse_8x1_neon(src + 7 * 8, ref + 7 * 8, &sse[6], &sse[7]);
src += src_stride;
ref += ref_stride;
}
return horizontal_long_add_uint32x4_x8(sse);
}
static INLINE int64_t highbd_sse_32xh_neon(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int height) {
uint32x4_t sse[8];
highbd_sse_8x1_init_neon(src + 0 * 8, ref + 0 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_init_neon(src + 1 * 8, ref + 1 * 8, &sse[2], &sse[3]);
highbd_sse_8x1_init_neon(src + 2 * 8, ref + 2 * 8, &sse[4], &sse[5]);
highbd_sse_8x1_init_neon(src + 3 * 8, ref + 3 * 8, &sse[6], &sse[7]);
src += src_stride;
ref += ref_stride;
while (--height != 0) {
highbd_sse_8x1_neon(src + 0 * 8, ref + 0 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_neon(src + 1 * 8, ref + 1 * 8, &sse[2], &sse[3]);
highbd_sse_8x1_neon(src + 2 * 8, ref + 2 * 8, &sse[4], &sse[5]);
highbd_sse_8x1_neon(src + 3 * 8, ref + 3 * 8, &sse[6], &sse[7]);
src += src_stride;
ref += ref_stride;
}
return horizontal_long_add_uint32x4_x8(sse);
}
static INLINE int64_t highbd_sse_16xh_neon(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int height) {
uint32x4_t sse[4];
highbd_sse_8x1_init_neon(src + 0 * 8, ref + 0 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_init_neon(src + 1 * 8, ref + 1 * 8, &sse[2], &sse[3]);
src += src_stride;
ref += ref_stride;
while (--height != 0) {
highbd_sse_8x1_neon(src + 0 * 8, ref + 0 * 8, &sse[0], &sse[1]);
highbd_sse_8x1_neon(src + 1 * 8, ref + 1 * 8, &sse[2], &sse[3]);
src += src_stride;
ref += ref_stride;
}
return horizontal_long_add_uint32x4_x4(sse);
}
static INLINE int64_t highbd_sse_8xh_neon(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int height) {
uint32x4_t sse[2];
highbd_sse_8x1_init_neon(src, ref, &sse[0], &sse[1]);
src += src_stride;
ref += ref_stride;
while (--height != 0) {
highbd_sse_8x1_neon(src, ref, &sse[0], &sse[1]);
src += src_stride;
ref += ref_stride;
}
return horizontal_long_add_uint32x4_x2(sse);
}
static INLINE int64_t highbd_sse_4xh_neon(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int height) {
// Peel the first loop iteration.
uint16x4_t s = vld1_u16(src);
uint16x4_t r = vld1_u16(ref);
uint16x4_t abs_diff = vabd_u16(s, r);
uint32x4_t sse = vmull_u16(abs_diff, abs_diff);
src += src_stride;
ref += ref_stride;
while (--height != 0) {
s = vld1_u16(src);
r = vld1_u16(ref);
abs_diff = vabd_u16(s, r);
sse = vmlal_u16(sse, abs_diff, abs_diff);
src += src_stride;
ref += ref_stride;
}
return horizontal_long_add_uint32x4(sse);
}
static INLINE int64_t highbd_sse_wxh_neon(const uint16_t *src, int src_stride,
const uint16_t *ref, int ref_stride,
int width, int height) {
// { 0, 1, 2, 3, 4, 5, 6, 7 }
uint16x8_t k01234567 = vmovl_u8(vcreate_u8(0x0706050403020100));
uint16x8_t remainder_mask = vcltq_u16(k01234567, vdupq_n_u16(width & 7));
uint64_t sse = 0;
do {
int w = width;
int offset = 0;
do {
uint16x8_t s = vld1q_u16(src + offset);
uint16x8_t r = vld1q_u16(ref + offset);
uint16x8_t abs_diff;
uint16x4_t abs_diff_lo;
uint16x4_t abs_diff_hi;
uint32x4_t sse_u32;
if (w < 8) {
// Mask out-of-range elements.
s = vandq_u16(s, remainder_mask);
r = vandq_u16(r, remainder_mask);
}
abs_diff = vabdq_u16(s, r);
abs_diff_lo = vget_low_u16(abs_diff);
abs_diff_hi = vget_high_u16(abs_diff);
sse_u32 = vmull_u16(abs_diff_lo, abs_diff_lo);
sse_u32 = vmlal_u16(sse_u32, abs_diff_hi, abs_diff_hi);
sse += horizontal_long_add_uint32x4(sse_u32);
offset += 8;
w -= 8;
} while (w > 0);
src += src_stride;
ref += ref_stride;
} while (--height != 0);
return sse;
}
int64_t vpx_highbd_sse_neon(const uint8_t *src8, int src_stride,
const uint8_t *ref8, int ref_stride, int width,
int height) {
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *ref = CONVERT_TO_SHORTPTR(ref8);
switch (width) {
case 4:
return highbd_sse_4xh_neon(src, src_stride, ref, ref_stride, height);
case 8:
return highbd_sse_8xh_neon(src, src_stride, ref, ref_stride, height);
case 16:
return highbd_sse_16xh_neon(src, src_stride, ref, ref_stride, height);
case 32:
return highbd_sse_32xh_neon(src, src_stride, ref, ref_stride, height);
case 64:
return highbd_sse_64xh_neon(src, src_stride, ref, ref_stride, height);
default:
return highbd_sse_wxh_neon(src, src_stride, ref, ref_stride, width,
height);
}
}