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/* Spa
*
* Copyright © 2019 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <spa/utils/defs.h>
#include "mix-ops.h"
#include <emmintrin.h>
void
mix_f64_sse2(struct mix_ops *ops, void * SPA_RESTRICT dst, const void * SPA_RESTRICT src[],
uint32_t n_src, uint32_t n_samples)
{
n_samples *= ops->n_channels;
if (n_src == 0) {
memset(dst, 0, n_samples * sizeof(double));
} else if (n_src == 1) {
if (dst != src[0])
spa_memcpy(dst, src[0], n_samples * sizeof(double));
} else {
uint32_t n, i, unrolled;
__m128d in[4];
const double **s = (const double **)src;
double *d = dst;
if (SPA_LIKELY(SPA_IS_ALIGNED(dst, 16))) {
unrolled = n_samples & ~15;
for (i = 0; i < n_src; i++) {
if (SPA_UNLIKELY(!SPA_IS_ALIGNED(src[i], 16))) {
unrolled = 0;
break;
}
}
} else
unrolled = 0;
for (n = 0; n < unrolled; n += 8) {
in[0] = _mm_load_pd(&s[0][n+0]);
in[1] = _mm_load_pd(&s[0][n+2]);
in[2] = _mm_load_pd(&s[0][n+4]);
in[3] = _mm_load_pd(&s[0][n+6]);
for (i = 1; i < n_src; i++) {
in[0] = _mm_add_pd(in[0], _mm_load_pd(&s[i][n+0]));
in[1] = _mm_add_pd(in[1], _mm_load_pd(&s[i][n+2]));
in[2] = _mm_add_pd(in[2], _mm_load_pd(&s[i][n+4]));
in[3] = _mm_add_pd(in[3], _mm_load_pd(&s[i][n+6]));
}
_mm_store_pd(&d[n+0], in[0]);
_mm_store_pd(&d[n+2], in[1]);
_mm_store_pd(&d[n+4], in[2]);
_mm_store_pd(&d[n+6], in[3]);
}
for (; n < n_samples; n++) {
in[0] = _mm_load_sd(&s[0][n]);
for (i = 1; i < n_src; i++)
in[0] = _mm_add_sd(in[0], _mm_load_sd(&s[i][n]));
_mm_store_sd(&d[n], in[0]);
}
}
}
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