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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 "config/aom_config.h"
#include "aom_dsp/arm/aom_neon_sve_bridge.h"
#include "aom_dsp/arm/mem_neon.h"
static inline void get_blk_sse_sum_4xh_sve(const int16_t *data, int stride,
int bh, int *x_sum,
int64_t *x2_sum) {
int32x4_t sum = vdupq_n_s32(0);
int64x2_t sse = vdupq_n_s64(0);
do {
int16x8_t d = vcombine_s16(vld1_s16(data), vld1_s16(data + stride));
sum = vpadalq_s16(sum, d);
sse = aom_sdotq_s16(sse, d, d);
data += 2 * stride;
bh -= 2;
} while (bh != 0);
*x_sum = vaddvq_s32(sum);
*x2_sum = vaddvq_s64(sse);
}
static inline void get_blk_sse_sum_8xh_sve(const int16_t *data, int stride,
int bh, int *x_sum,
int64_t *x2_sum) {
int32x4_t sum[2] = { vdupq_n_s32(0), vdupq_n_s32(0) };
int64x2_t sse[2] = { vdupq_n_s64(0), vdupq_n_s64(0) };
do {
int16x8_t d0 = vld1q_s16(data);
int16x8_t d1 = vld1q_s16(data + stride);
sum[0] = vpadalq_s16(sum[0], d0);
sum[1] = vpadalq_s16(sum[1], d1);
sse[0] = aom_sdotq_s16(sse[0], d0, d0);
sse[1] = aom_sdotq_s16(sse[1], d1, d1);
data += 2 * stride;
bh -= 2;
} while (bh != 0);
*x_sum = vaddvq_s32(vaddq_s32(sum[0], sum[1]));
*x2_sum = vaddvq_s64(vaddq_s64(sse[0], sse[1]));
}
static inline void get_blk_sse_sum_large_sve(const int16_t *data, int stride,
int bw, int bh, int *x_sum,
int64_t *x2_sum) {
int32x4_t sum[2] = { vdupq_n_s32(0), vdupq_n_s32(0) };
int64x2_t sse[2] = { vdupq_n_s64(0), vdupq_n_s64(0) };
do {
int j = bw;
const int16_t *data_ptr = data;
do {
int16x8_t d0 = vld1q_s16(data_ptr);
int16x8_t d1 = vld1q_s16(data_ptr + 8);
sum[0] = vpadalq_s16(sum[0], d0);
sum[1] = vpadalq_s16(sum[1], d1);
sse[0] = aom_sdotq_s16(sse[0], d0, d0);
sse[1] = aom_sdotq_s16(sse[1], d1, d1);
data_ptr += 16;
j -= 16;
} while (j != 0);
data += stride;
} while (--bh != 0);
*x_sum = vaddvq_s32(vaddq_s32(sum[0], sum[1]));
*x2_sum = vaddvq_s64(vaddq_s64(sse[0], sse[1]));
}
void aom_get_blk_sse_sum_sve(const int16_t *data, int stride, int bw, int bh,
int *x_sum, int64_t *x2_sum) {
if (bw == 4) {
get_blk_sse_sum_4xh_sve(data, stride, bh, x_sum, x2_sum);
} else if (bw == 8) {
get_blk_sse_sum_8xh_sve(data, stride, bh, x_sum, x2_sum);
} else {
assert(bw % 16 == 0);
get_blk_sse_sum_large_sve(data, stride, bw, bh, x_sum, x2_sum);
}
}