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/*
* Copyright (c) 2021 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 <assert.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"
static INLINE void sad16_neon(uint8x16_t src, uint8x16_t ref,
uint32x4_t *const sad_sum) {
uint8x16_t abs_diff = vabdq_u8(src, ref);
*sad_sum = vdotq_u32(*sad_sum, abs_diff, vdupq_n_u8(1));
}
static INLINE void sad64xhx4d_neon_dotprod(const uint8_t *src, int src_stride,
const uint8_t *const ref[4],
int ref_stride, uint32_t res[4],
int h) {
uint32x4_t sum_lo[4] = { vdupq_n_u32(0), vdupq_n_u32(0), vdupq_n_u32(0),
vdupq_n_u32(0) };
uint32x4_t sum_hi[4] = { vdupq_n_u32(0), vdupq_n_u32(0), vdupq_n_u32(0),
vdupq_n_u32(0) };
uint32x4_t sum[4];
int i = 0;
do {
uint8x16_t s0, s1, s2, s3;
s0 = vld1q_u8(src + i * src_stride);
sad16_neon(s0, vld1q_u8(ref[0] + i * ref_stride), &sum_lo[0]);
sad16_neon(s0, vld1q_u8(ref[1] + i * ref_stride), &sum_lo[1]);
sad16_neon(s0, vld1q_u8(ref[2] + i * ref_stride), &sum_lo[2]);
sad16_neon(s0, vld1q_u8(ref[3] + i * ref_stride), &sum_lo[3]);
s1 = vld1q_u8(src + i * src_stride + 16);
sad16_neon(s1, vld1q_u8(ref[0] + i * ref_stride + 16), &sum_hi[0]);
sad16_neon(s1, vld1q_u8(ref[1] + i * ref_stride + 16), &sum_hi[1]);
sad16_neon(s1, vld1q_u8(ref[2] + i * ref_stride + 16), &sum_hi[2]);
sad16_neon(s1, vld1q_u8(ref[3] + i * ref_stride + 16), &sum_hi[3]);
s2 = vld1q_u8(src + i * src_stride + 32);
sad16_neon(s2, vld1q_u8(ref[0] + i * ref_stride + 32), &sum_lo[0]);
sad16_neon(s2, vld1q_u8(ref[1] + i * ref_stride + 32), &sum_lo[1]);
sad16_neon(s2, vld1q_u8(ref[2] + i * ref_stride + 32), &sum_lo[2]);
sad16_neon(s2, vld1q_u8(ref[3] + i * ref_stride + 32), &sum_lo[3]);
s3 = vld1q_u8(src + i * src_stride + 48);
sad16_neon(s3, vld1q_u8(ref[0] + i * ref_stride + 48), &sum_hi[0]);
sad16_neon(s3, vld1q_u8(ref[1] + i * ref_stride + 48), &sum_hi[1]);
sad16_neon(s3, vld1q_u8(ref[2] + i * ref_stride + 48), &sum_hi[2]);
sad16_neon(s3, vld1q_u8(ref[3] + i * ref_stride + 48), &sum_hi[3]);
} while (++i < h);
sum[0] = vaddq_u32(sum_lo[0], sum_hi[0]);
sum[1] = vaddq_u32(sum_lo[1], sum_hi[1]);
sum[2] = vaddq_u32(sum_lo[2], sum_hi[2]);
sum[3] = vaddq_u32(sum_lo[3], sum_hi[3]);
vst1q_u32(res, horizontal_add_4d_uint32x4(sum));
}
static INLINE void sad32xhx4d_neon_dotprod(const uint8_t *src, int src_stride,
const uint8_t *const ref[4],
int ref_stride, uint32_t res[4],
int h) {
uint32x4_t sum_lo[4] = { vdupq_n_u32(0), vdupq_n_u32(0), vdupq_n_u32(0),
vdupq_n_u32(0) };
uint32x4_t sum_hi[4] = { vdupq_n_u32(0), vdupq_n_u32(0), vdupq_n_u32(0),
vdupq_n_u32(0) };
uint32x4_t sum[4];
int i = 0;
do {
uint8x16_t s0, s1;
s0 = vld1q_u8(src + i * src_stride);
sad16_neon(s0, vld1q_u8(ref[0] + i * ref_stride), &sum_lo[0]);
sad16_neon(s0, vld1q_u8(ref[1] + i * ref_stride), &sum_lo[1]);
sad16_neon(s0, vld1q_u8(ref[2] + i * ref_stride), &sum_lo[2]);
sad16_neon(s0, vld1q_u8(ref[3] + i * ref_stride), &sum_lo[3]);
s1 = vld1q_u8(src + i * src_stride + 16);
sad16_neon(s1, vld1q_u8(ref[0] + i * ref_stride + 16), &sum_hi[0]);
sad16_neon(s1, vld1q_u8(ref[1] + i * ref_stride + 16), &sum_hi[1]);
sad16_neon(s1, vld1q_u8(ref[2] + i * ref_stride + 16), &sum_hi[2]);
sad16_neon(s1, vld1q_u8(ref[3] + i * ref_stride + 16), &sum_hi[3]);
} while (++i < h);
sum[0] = vaddq_u32(sum_lo[0], sum_hi[0]);
sum[1] = vaddq_u32(sum_lo[1], sum_hi[1]);
sum[2] = vaddq_u32(sum_lo[2], sum_hi[2]);
sum[3] = vaddq_u32(sum_lo[3], sum_hi[3]);
vst1q_u32(res, horizontal_add_4d_uint32x4(sum));
}
static INLINE void sad16xhx4d_neon_dotprod(const uint8_t *src, int src_stride,
const uint8_t *const ref[4],
int ref_stride, uint32_t res[4],
int h) {
uint32x4_t sum[4] = { vdupq_n_u32(0), vdupq_n_u32(0), vdupq_n_u32(0),
vdupq_n_u32(0) };
int i = 0;
do {
const uint8x16_t s = vld1q_u8(src + i * src_stride);
sad16_neon(s, vld1q_u8(ref[0] + i * ref_stride), &sum[0]);
sad16_neon(s, vld1q_u8(ref[1] + i * ref_stride), &sum[1]);
sad16_neon(s, vld1q_u8(ref[2] + i * ref_stride), &sum[2]);
sad16_neon(s, vld1q_u8(ref[3] + i * ref_stride), &sum[3]);
} while (++i < h);
vst1q_u32(res, horizontal_add_4d_uint32x4(sum));
}
#define SAD_WXH_4D_NEON_DOTPROD(w, h) \
void vpx_sad##w##x##h##x4d_neon_dotprod( \
const uint8_t *src_ptr, int src_stride, \
const uint8_t *const ref_array[4], int ref_stride, \
uint32_t sad_array[4]) { \
sad##w##xhx4d_neon_dotprod(src_ptr, src_stride, ref_array, ref_stride, \
sad_array, (h)); \
}
SAD_WXH_4D_NEON_DOTPROD(16, 8)
SAD_WXH_4D_NEON_DOTPROD(16, 16)
SAD_WXH_4D_NEON_DOTPROD(16, 32)
SAD_WXH_4D_NEON_DOTPROD(32, 16)
SAD_WXH_4D_NEON_DOTPROD(32, 32)
SAD_WXH_4D_NEON_DOTPROD(32, 64)
SAD_WXH_4D_NEON_DOTPROD(64, 32)
SAD_WXH_4D_NEON_DOTPROD(64, 64)
#undef SAD_WXH_4D_NEON_DOTPROD
#define SAD_SKIP_WXH_4D_NEON_DOTPROD(w, h) \
void vpx_sad_skip_##w##x##h##x4d_neon_dotprod( \
const uint8_t *src_ptr, int src_stride, \
const uint8_t *const ref_array[4], int ref_stride, \
uint32_t sad_array[4]) { \
sad##w##xhx4d_neon_dotprod(src_ptr, 2 * src_stride, ref_array, \
2 * ref_stride, sad_array, ((h) >> 1)); \
sad_array[0] <<= 1; \
sad_array[1] <<= 1; \
sad_array[2] <<= 1; \
sad_array[3] <<= 1; \
}
SAD_SKIP_WXH_4D_NEON_DOTPROD(16, 8)
SAD_SKIP_WXH_4D_NEON_DOTPROD(16, 16)
SAD_SKIP_WXH_4D_NEON_DOTPROD(16, 32)
SAD_SKIP_WXH_4D_NEON_DOTPROD(32, 16)
SAD_SKIP_WXH_4D_NEON_DOTPROD(32, 32)
SAD_SKIP_WXH_4D_NEON_DOTPROD(32, 64)
SAD_SKIP_WXH_4D_NEON_DOTPROD(64, 32)
SAD_SKIP_WXH_4D_NEON_DOTPROD(64, 64)
#undef SAD_SKIP_WXH_4D_NEON_DOTPROD