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/*
* Copyright (c) 2020, Alliance for Open Media. 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 "config/aom_dsp_rtcd.h"
#include "aom/aom_integer.h"
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/arm/sum_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
#if defined(__ARM_FEATURE_DOTPROD)
static INLINE void sse_16x1_neon(const uint8_t *src, const uint8_t *ref,
uint32x4_t *sse) {
uint8x16_t s = vld1q_u8(src);
uint8x16_t r = vld1q_u8(ref);
uint8x16_t abs_diff = vabdq_u8(s, r);
*sse = vdotq_u32(*sse, abs_diff, abs_diff);
}
static INLINE void sse_8x1_neon(const uint8_t *src, const uint8_t *ref,
uint32x2_t *sse) {
uint8x8_t s = vld1_u8(src);
uint8x8_t r = vld1_u8(ref);
uint8x8_t abs_diff = vabd_u8(s, r);
*sse = vdot_u32(*sse, abs_diff, abs_diff);
}
static INLINE void sse_4x2_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
uint32x2_t *sse) {
uint8x8_t s = load_unaligned_u8(src, src_stride);
uint8x8_t r = load_unaligned_u8(ref, ref_stride);
uint8x8_t abs_diff = vabd_u8(s, r);
*sse = vdot_u32(*sse, abs_diff, abs_diff);
}
static INLINE uint32_t sse_8xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x2_t sse[2] = { vdup_n_u32(0), vdup_n_u32(0) };
int i = height;
do {
sse_8x1_neon(src, ref, &sse[0]);
src += src_stride;
ref += ref_stride;
sse_8x1_neon(src, ref, &sse[1]);
src += src_stride;
ref += ref_stride;
i -= 2;
} while (i != 0);
return horizontal_add_u32x4(vcombine_u32(sse[0], sse[1]));
}
static INLINE uint32_t sse_4xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x2_t sse = vdup_n_u32(0);
int i = height;
do {
sse_4x2_neon(src, src_stride, ref, ref_stride, &sse);
src += 2 * src_stride;
ref += 2 * ref_stride;
i -= 2;
} while (i != 0);
return horizontal_add_u32x2(sse);
}
static INLINE uint32_t sse_wxh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int width, int height) {
uint32x2_t sse[2] = { vdup_n_u32(0), vdup_n_u32(0) };
if ((width & 0x07) && ((width & 0x07) < 5)) {
int i = height;
do {
int j = 0;
do {
sse_8x1_neon(src + j, ref + j, &sse[0]);
sse_8x1_neon(src + j + src_stride, ref + j + ref_stride, &sse[1]);
j += 8;
} while (j + 4 < width);
sse_4x2_neon(src + j, src_stride, ref + j, ref_stride, &sse[0]);
src += 2 * src_stride;
ref += 2 * ref_stride;
i -= 2;
} while (i != 0);
} else {
int i = height;
do {
int j = 0;
do {
sse_8x1_neon(src + j, ref + j, &sse[0]);
sse_8x1_neon(src + j + src_stride, ref + j + ref_stride, &sse[1]);
j += 8;
} while (j < width);
src += 2 * src_stride;
ref += 2 * ref_stride;
i -= 2;
} while (i != 0);
}
return horizontal_add_u32x4(vcombine_u32(sse[0], sse[1]));
}
#else // !defined(__ARM_FEATURE_DOTPROD)
static INLINE void sse_16x1_neon(const uint8_t *src, const uint8_t *ref,
uint32x4_t *sse) {
uint8x16_t s = vld1q_u8(src);
uint8x16_t r = vld1q_u8(ref);
uint8x16_t abs_diff = vabdq_u8(s, r);
uint8x8_t abs_diff_lo = vget_low_u8(abs_diff);
uint8x8_t abs_diff_hi = vget_high_u8(abs_diff);
*sse = vpadalq_u16(*sse, vmull_u8(abs_diff_lo, abs_diff_lo));
*sse = vpadalq_u16(*sse, vmull_u8(abs_diff_hi, abs_diff_hi));
}
static INLINE void sse_8x1_neon(const uint8_t *src, const uint8_t *ref,
uint32x4_t *sse) {
uint8x8_t s = vld1_u8(src);
uint8x8_t r = vld1_u8(ref);
uint8x8_t abs_diff = vabd_u8(s, r);
*sse = vpadalq_u16(*sse, vmull_u8(abs_diff, abs_diff));
}
static INLINE void sse_4x2_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
uint32x4_t *sse) {
uint8x8_t s = load_unaligned_u8(src, src_stride);
uint8x8_t r = load_unaligned_u8(ref, ref_stride);
uint8x8_t abs_diff = vabd_u8(s, r);
*sse = vpadalq_u16(*sse, vmull_u8(abs_diff, abs_diff));
}
static INLINE uint32_t sse_8xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x4_t sse = vdupq_n_u32(0);
int i = height;
do {
sse_8x1_neon(src, ref, &sse);
src += src_stride;
ref += ref_stride;
} while (--i != 0);
return horizontal_add_u32x4(sse);
}
static INLINE uint32_t sse_4xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x4_t sse = vdupq_n_u32(0);
int i = height;
do {
sse_4x2_neon(src, src_stride, ref, ref_stride, &sse);
src += 2 * src_stride;
ref += 2 * ref_stride;
i -= 2;
} while (i != 0);
return horizontal_add_u32x4(sse);
}
static INLINE uint32_t sse_wxh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int width, int height) {
uint32x4_t sse = vdupq_n_u32(0);
if ((width & 0x07) && ((width & 0x07) < 5)) {
int i = height;
do {
int j = 0;
do {
sse_8x1_neon(src + j, ref + j, &sse);
sse_8x1_neon(src + j + src_stride, ref + j + ref_stride, &sse);
j += 8;
} while (j + 4 < width);
sse_4x2_neon(src + j, src_stride, ref + j, ref_stride, &sse);
src += 2 * src_stride;
ref += 2 * ref_stride;
i -= 2;
} while (i != 0);
} else {
int i = height;
do {
int j = 0;
do {
sse_8x1_neon(src + j, ref + j, &sse);
j += 8;
} while (j < width);
src += src_stride;
ref += ref_stride;
} while (--i != 0);
}
return horizontal_add_u32x4(sse);
}
#endif // defined(__ARM_FEATURE_DOTPROD)
static INLINE uint32_t sse_128xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x4_t sse[2] = { vdupq_n_u32(0), vdupq_n_u32(0) };
int i = height;
do {
sse_16x1_neon(src, ref, &sse[0]);
sse_16x1_neon(src + 16, ref + 16, &sse[1]);
sse_16x1_neon(src + 32, ref + 32, &sse[0]);
sse_16x1_neon(src + 48, ref + 48, &sse[1]);
sse_16x1_neon(src + 64, ref + 64, &sse[0]);
sse_16x1_neon(src + 80, ref + 80, &sse[1]);
sse_16x1_neon(src + 96, ref + 96, &sse[0]);
sse_16x1_neon(src + 112, ref + 112, &sse[1]);
src += src_stride;
ref += ref_stride;
} while (--i != 0);
return horizontal_add_u32x4(vaddq_u32(sse[0], sse[1]));
}
static INLINE uint32_t sse_64xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x4_t sse[2] = { vdupq_n_u32(0), vdupq_n_u32(0) };
int i = height;
do {
sse_16x1_neon(src, ref, &sse[0]);
sse_16x1_neon(src + 16, ref + 16, &sse[1]);
sse_16x1_neon(src + 32, ref + 32, &sse[0]);
sse_16x1_neon(src + 48, ref + 48, &sse[1]);
src += src_stride;
ref += ref_stride;
} while (--i != 0);
return horizontal_add_u32x4(vaddq_u32(sse[0], sse[1]));
}
static INLINE uint32_t sse_32xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x4_t sse[2] = { vdupq_n_u32(0), vdupq_n_u32(0) };
int i = height;
do {
sse_16x1_neon(src, ref, &sse[0]);
sse_16x1_neon(src + 16, ref + 16, &sse[1]);
src += src_stride;
ref += ref_stride;
} while (--i != 0);
return horizontal_add_u32x4(vaddq_u32(sse[0], sse[1]));
}
static INLINE uint32_t sse_16xh_neon(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
int height) {
uint32x4_t sse[2] = { vdupq_n_u32(0), vdupq_n_u32(0) };
int i = height;
do {
sse_16x1_neon(src, ref, &sse[0]);
src += src_stride;
ref += ref_stride;
sse_16x1_neon(src, ref, &sse[1]);
src += src_stride;
ref += ref_stride;
i -= 2;
} while (i != 0);
return horizontal_add_u32x4(vaddq_u32(sse[0], sse[1]));
}
int64_t aom_sse_neon(const uint8_t *src, int src_stride, const uint8_t *ref,
int ref_stride, int width, int height) {
switch (width) {
case 4: return sse_4xh_neon(src, src_stride, ref, ref_stride, height);
case 8: return sse_8xh_neon(src, src_stride, ref, ref_stride, height);
case 16: return sse_16xh_neon(src, src_stride, ref, ref_stride, height);
case 32: return sse_32xh_neon(src, src_stride, ref, ref_stride, height);
case 64: return sse_64xh_neon(src, src_stride, ref, ref_stride, height);
case 128: return sse_128xh_neon(src, src_stride, ref, ref_stride, height);
default:
return sse_wxh_neon(src, src_stride, ref, ref_stride, width, height);
}
}
#if CONFIG_AV1_HIGHBITDEPTH
static INLINE uint32_t highbd_sse_W8x1_neon(uint16x8_t q2, uint16x8_t q3) {
uint32_t sse;
const uint32_t sse1 = 0;
const uint32x4_t q1 = vld1q_dup_u32(&sse1);
uint16x8_t q4 = vabdq_u16(q2, q3); // diff = abs(a[x] - b[x])
uint16x4_t d0 = vget_low_u16(q4);
uint16x4_t d1 = vget_high_u16(q4);
uint32x4_t q6 = vmlal_u16(q1, d0, d0);
uint32x4_t q7 = vmlal_u16(q1, d1, d1);
uint32x2_t d4 = vadd_u32(vget_low_u32(q6), vget_high_u32(q6));
uint32x2_t d5 = vadd_u32(vget_low_u32(q7), vget_high_u32(q7));
uint32x2_t d6 = vadd_u32(d4, d5);
sse = vget_lane_u32(d6, 0);
sse += vget_lane_u32(d6, 1);
return sse;
}
int64_t aom_highbd_sse_neon(const uint8_t *a8, int a_stride, const uint8_t *b8,
int b_stride, int width, int height) {
static const uint16_t k01234567[8] = { 0, 1, 2, 3, 4, 5, 6, 7 };
const uint16x8_t q0 = vld1q_u16(k01234567);
int64_t sse = 0;
uint16_t *a = CONVERT_TO_SHORTPTR(a8);
uint16_t *b = CONVERT_TO_SHORTPTR(b8);
int x, y;
int addinc;
uint16x4_t d0, d1, d2, d3;
uint16_t dx;
uint16x8_t q2, q3, q4, q5;
switch (width) {
case 4:
for (y = 0; y < height; y += 2) {
d0 = vld1_u16(a); // load 4 data
a += a_stride;
d1 = vld1_u16(a);
a += a_stride;
d2 = vld1_u16(b);
b += b_stride;
d3 = vld1_u16(b);
b += b_stride;
q2 = vcombine_u16(d0, d1); // make a 8 data vector
q3 = vcombine_u16(d2, d3);
sse += highbd_sse_W8x1_neon(q2, q3);
}
break;
case 8:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 16:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 32:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 16);
q3 = vld1q_u16(b + 16);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 24);
q3 = vld1q_u16(b + 24);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 64:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 16);
q3 = vld1q_u16(b + 16);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 24);
q3 = vld1q_u16(b + 24);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 32);
q3 = vld1q_u16(b + 32);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 40);
q3 = vld1q_u16(b + 40);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 48);
q3 = vld1q_u16(b + 48);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 56);
q3 = vld1q_u16(b + 56);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
case 128:
for (y = 0; y < height; y++) {
q2 = vld1q_u16(a);
q3 = vld1q_u16(b);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 8);
q3 = vld1q_u16(b + 8);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 16);
q3 = vld1q_u16(b + 16);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 24);
q3 = vld1q_u16(b + 24);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 32);
q3 = vld1q_u16(b + 32);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 40);
q3 = vld1q_u16(b + 40);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 48);
q3 = vld1q_u16(b + 48);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 56);
q3 = vld1q_u16(b + 56);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 64);
q3 = vld1q_u16(b + 64);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 72);
q3 = vld1q_u16(b + 72);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 80);
q3 = vld1q_u16(b + 80);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 88);
q3 = vld1q_u16(b + 88);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 96);
q3 = vld1q_u16(b + 96);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 104);
q3 = vld1q_u16(b + 104);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 112);
q3 = vld1q_u16(b + 112);
sse += highbd_sse_W8x1_neon(q2, q3);
q2 = vld1q_u16(a + 120);
q3 = vld1q_u16(b + 120);
sse += highbd_sse_W8x1_neon(q2, q3);
a += a_stride;
b += b_stride;
}
break;
default:
for (y = 0; y < height; y++) {
x = width;
while (x > 0) {
addinc = width - x;
q2 = vld1q_u16(a + addinc);
q3 = vld1q_u16(b + addinc);
if (x < 8) {
dx = x;
q4 = vld1q_dup_u16(&dx);
q5 = vcltq_u16(q0, q4);
q2 = vandq_u16(q2, q5);
q3 = vandq_u16(q3, q5);
}
sse += highbd_sse_W8x1_neon(q2, q3);
x -= 8;
}
a += a_stride;
b += b_stride;
}
}
return (int64_t)sse;
}
#endif