ref: d8497e1fcda2a13d9871d2bcae9c52a03498cd69
dir: /vpx_dsp/arm/sad4d_neon.c/
/*
* Copyright (c) 2015 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 "./vpx_config.h"
#include "./vpx_dsp_rtcd.h"
#include "vpx/vpx_integer.h"
#include "vpx_dsp/arm/mem_neon.h"
#include "vpx_dsp/arm/sum_neon.h"
void vpx_sad4x4x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
int i;
const uint8x16_t src_u8 = load_unaligned_u8q(src, src_stride);
for (i = 0; i < 4; ++i) {
const uint8x16_t ref_u8 = load_unaligned_u8q(ref[i], ref_stride);
uint16x8_t abs = vabdl_u8(vget_low_u8(src_u8), vget_low_u8(ref_u8));
abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(ref_u8));
res[i] = vget_lane_u32(horizontal_add_uint16x8(abs), 0);
}
}
void vpx_sad4x8x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
int i;
const uint8x16_t src_0 = load_unaligned_u8q(src, src_stride);
const uint8x16_t src_1 = load_unaligned_u8q(src + 4 * src_stride, src_stride);
for (i = 0; i < 4; ++i) {
const uint8x16_t ref_0 = load_unaligned_u8q(ref[i], ref_stride);
const uint8x16_t ref_1 =
load_unaligned_u8q(ref[i] + 4 * ref_stride, ref_stride);
uint16x8_t abs = vabdl_u8(vget_low_u8(src_0), vget_low_u8(ref_0));
abs = vabal_u8(abs, vget_high_u8(src_0), vget_high_u8(ref_0));
abs = vabal_u8(abs, vget_low_u8(src_1), vget_low_u8(ref_1));
abs = vabal_u8(abs, vget_high_u8(src_1), vget_high_u8(ref_1));
res[i] = vget_lane_u32(horizontal_add_uint16x8(abs), 0);
}
}
static INLINE void sad8x_4d(const uint8_t *a, int a_stride,
const uint8_t *const b[4], int b_stride,
uint32_t *result, const int height) {
int i, j;
uint16x8_t sum[4] = { vdupq_n_u16(0), vdupq_n_u16(0), vdupq_n_u16(0),
vdupq_n_u16(0) };
const uint8_t *b_loop[4] = { b[0], b[1], b[2], b[3] };
for (i = 0; i < height; ++i) {
const uint8x8_t a_u8 = vld1_u8(a);
a += a_stride;
for (j = 0; j < 4; ++j) {
const uint8x8_t b_u8 = vld1_u8(b_loop[j]);
b_loop[j] += b_stride;
sum[j] = vabal_u8(sum[j], a_u8, b_u8);
}
}
for (j = 0; j < 4; ++j) {
result[j] = vget_lane_u32(horizontal_add_uint16x8(sum[j]), 0);
}
}
void vpx_sad8x4x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad8x_4d(src, src_stride, ref, ref_stride, res, 4);
}
void vpx_sad8x8x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad8x_4d(src, src_stride, ref, ref_stride, res, 8);
}
void vpx_sad8x16x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad8x_4d(src, src_stride, ref, ref_stride, res, 16);
}
static INLINE void sad16x_4d(const uint8_t *a, int a_stride,
const uint8_t *const b[4], int b_stride,
uint32_t *result, const int height) {
int i, j;
uint16x8_t sum[4] = { vdupq_n_u16(0), vdupq_n_u16(0), vdupq_n_u16(0),
vdupq_n_u16(0) };
const uint8_t *b_loop[4] = { b[0], b[1], b[2], b[3] };
for (i = 0; i < height; ++i) {
const uint8x16_t a_u8 = vld1q_u8(a);
a += a_stride;
for (j = 0; j < 4; ++j) {
const uint8x16_t b_u8 = vld1q_u8(b_loop[j]);
b_loop[j] += b_stride;
sum[j] = vabal_u8(sum[j], vget_low_u8(a_u8), vget_low_u8(b_u8));
sum[j] = vabal_u8(sum[j], vget_high_u8(a_u8), vget_high_u8(b_u8));
}
}
for (j = 0; j < 4; ++j) {
result[j] = vget_lane_u32(horizontal_add_uint16x8(sum[j]), 0);
}
}
void vpx_sad16x8x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad16x_4d(src, src_stride, ref, ref_stride, res, 8);
}
void vpx_sad16x16x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad16x_4d(src, src_stride, ref, ref_stride, res, 16);
}
void vpx_sad16x32x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad16x_4d(src, src_stride, ref, ref_stride, res, 32);
}
static INLINE void sad32x_4d(const uint8_t *a, int a_stride,
const uint8_t *const b[4], int b_stride,
uint32_t *result, const int height) {
int i, j;
uint16x8_t sum[4] = { vdupq_n_u16(0), vdupq_n_u16(0), vdupq_n_u16(0),
vdupq_n_u16(0) };
const uint8_t *b_loop[4] = { b[0], b[1], b[2], b[3] };
for (i = 0; i < height; ++i) {
const uint8x16_t a_0 = vld1q_u8(a);
const uint8x16_t a_1 = vld1q_u8(a + 16);
a += a_stride;
for (j = 0; j < 4; ++j) {
const uint8x16_t b_0 = vld1q_u8(b_loop[j]);
const uint8x16_t b_1 = vld1q_u8(b_loop[j] + 16);
b_loop[j] += b_stride;
sum[j] = vabal_u8(sum[j], vget_low_u8(a_0), vget_low_u8(b_0));
sum[j] = vabal_u8(sum[j], vget_high_u8(a_0), vget_high_u8(b_0));
sum[j] = vabal_u8(sum[j], vget_low_u8(a_1), vget_low_u8(b_1));
sum[j] = vabal_u8(sum[j], vget_high_u8(a_1), vget_high_u8(b_1));
}
}
for (j = 0; j < 4; ++j) {
result[j] = vget_lane_u32(horizontal_add_uint16x8(sum[j]), 0);
}
}
void vpx_sad32x16x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad32x_4d(src, src_stride, ref, ref_stride, res, 16);
}
void vpx_sad32x32x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad32x_4d(src, src_stride, ref, ref_stride, res, 32);
}
void vpx_sad32x64x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad32x_4d(src, src_stride, ref, ref_stride, res, 64);
}
static INLINE void sum64x(const uint8x16_t a_0, const uint8x16_t a_1,
const uint8x16_t b_0, const uint8x16_t b_1,
uint16x8_t *sum) {
*sum = vabal_u8(*sum, vget_low_u8(a_0), vget_low_u8(b_0));
*sum = vabal_u8(*sum, vget_high_u8(a_0), vget_high_u8(b_0));
*sum = vabal_u8(*sum, vget_low_u8(a_1), vget_low_u8(b_1));
*sum = vabal_u8(*sum, vget_high_u8(a_1), vget_high_u8(b_1));
}
static INLINE void sad64x_4d(const uint8_t *a, int a_stride,
const uint8_t *const b[4], int b_stride,
uint32_t *result, const int height) {
int i;
uint16x8_t sum_0 = vdupq_n_u16(0);
uint16x8_t sum_1 = vdupq_n_u16(0);
uint16x8_t sum_2 = vdupq_n_u16(0);
uint16x8_t sum_3 = vdupq_n_u16(0);
uint16x8_t sum_4 = vdupq_n_u16(0);
uint16x8_t sum_5 = vdupq_n_u16(0);
uint16x8_t sum_6 = vdupq_n_u16(0);
uint16x8_t sum_7 = vdupq_n_u16(0);
const uint8_t *b_loop[4] = { b[0], b[1], b[2], b[3] };
for (i = 0; i < height; ++i) {
const uint8x16_t a_0 = vld1q_u8(a);
const uint8x16_t a_1 = vld1q_u8(a + 16);
const uint8x16_t a_2 = vld1q_u8(a + 32);
const uint8x16_t a_3 = vld1q_u8(a + 48);
a += a_stride;
sum64x(a_0, a_1, vld1q_u8(b_loop[0]), vld1q_u8(b_loop[0] + 16), &sum_0);
sum64x(a_2, a_3, vld1q_u8(b_loop[0] + 32), vld1q_u8(b_loop[0] + 48),
&sum_1);
b_loop[0] += b_stride;
sum64x(a_0, a_1, vld1q_u8(b_loop[1]), vld1q_u8(b_loop[1] + 16), &sum_2);
sum64x(a_2, a_3, vld1q_u8(b_loop[1] + 32), vld1q_u8(b_loop[1] + 48),
&sum_3);
b_loop[1] += b_stride;
sum64x(a_0, a_1, vld1q_u8(b_loop[2]), vld1q_u8(b_loop[2] + 16), &sum_4);
sum64x(a_2, a_3, vld1q_u8(b_loop[2] + 32), vld1q_u8(b_loop[2] + 48),
&sum_5);
b_loop[2] += b_stride;
sum64x(a_0, a_1, vld1q_u8(b_loop[3]), vld1q_u8(b_loop[3] + 16), &sum_6);
sum64x(a_2, a_3, vld1q_u8(b_loop[3] + 32), vld1q_u8(b_loop[3] + 48),
&sum_7);
b_loop[3] += b_stride;
}
result[0] = vget_lane_u32(horizontal_add_long_uint16x8(sum_0, sum_1), 0);
result[1] = vget_lane_u32(horizontal_add_long_uint16x8(sum_2, sum_3), 0);
result[2] = vget_lane_u32(horizontal_add_long_uint16x8(sum_4, sum_5), 0);
result[3] = vget_lane_u32(horizontal_add_long_uint16x8(sum_6, sum_7), 0);
}
void vpx_sad64x32x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad64x_4d(src, src_stride, ref, ref_stride, res, 32);
}
void vpx_sad64x64x4d_neon(const uint8_t *src, int src_stride,
const uint8_t *const ref[4], int ref_stride,
uint32_t *res) {
sad64x_4d(src, src_stride, ref, ref_stride, res, 64);
}