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https://gitlab.freedesktop.org/pipewire/pipewire.git
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89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* Spa
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*
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* Copyright © 2019 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <spa/utils/defs.h>
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#include "mix-ops.h"
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#include <emmintrin.h>
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static inline void mix_2(double * dst, const double * SPA_RESTRICT src, uint32_t n_samples)
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{
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uint32_t n, unrolled;
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__m128d in1[4], in2[4];
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if (SPA_IS_ALIGNED(src, 16) &&
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SPA_IS_ALIGNED(dst, 16))
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unrolled = n_samples & ~7;
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else
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unrolled = 0;
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for (n = 0; n < unrolled; n += 8) {
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in1[0] = _mm_load_pd(&dst[n+ 0]);
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in1[1] = _mm_load_pd(&dst[n+ 2]);
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in1[2] = _mm_load_pd(&dst[n+ 4]);
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in1[3] = _mm_load_pd(&dst[n+ 6]);
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in2[0] = _mm_load_pd(&src[n+ 0]);
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in2[1] = _mm_load_pd(&src[n+ 2]);
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in2[2] = _mm_load_pd(&src[n+ 4]);
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in2[3] = _mm_load_pd(&src[n+ 6]);
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in1[0] = _mm_add_pd(in1[0], in2[0]);
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in1[1] = _mm_add_pd(in1[1], in2[1]);
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in1[2] = _mm_add_pd(in1[2], in2[2]);
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in1[3] = _mm_add_pd(in1[3], in2[3]);
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_mm_store_pd(&dst[n+ 0], in1[0]);
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_mm_store_pd(&dst[n+ 2], in1[1]);
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_mm_store_pd(&dst[n+ 4], in1[2]);
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_mm_store_pd(&dst[n+ 6], in1[3]);
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}
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for (; n < n_samples; n++) {
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in1[0] = _mm_load_sd(&dst[n]),
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in2[0] = _mm_load_sd(&src[n]),
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in1[0] = _mm_add_sd(in1[0], in2[0]);
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_mm_store_sd(&dst[n], in1[0]);
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}
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}
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void
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mix_f64_sse2(struct mix_ops *ops, void * SPA_RESTRICT dst, const void * SPA_RESTRICT src[],
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uint32_t n_src, uint32_t n_samples)
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{
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uint32_t i;
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if (n_src == 0)
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memset(dst, 0, n_samples * ops->n_channels * sizeof(double));
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else if (dst != src[0])
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memcpy(dst, src[0], n_samples * ops->n_channels * sizeof(double));
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for (i = 1; i < n_src; i++) {
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mix_2(dst, src[i], n_samples * ops->n_channels);
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}
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}
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