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https://gitlab.freedesktop.org/pipewire/pipewire.git
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135 lines
3.9 KiB
C
135 lines
3.9 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 <immintrin.h>
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static inline void mix_4(float * dst,
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const float * SPA_RESTRICT src0,
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const float * SPA_RESTRICT src1,
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const float * SPA_RESTRICT src2,
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uint32_t n_samples)
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{
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uint32_t n, unrolled;
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if (SPA_IS_ALIGNED(src0, 32) &&
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SPA_IS_ALIGNED(src1, 32) &&
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SPA_IS_ALIGNED(src2, 32) &&
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SPA_IS_ALIGNED(dst, 32))
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unrolled = n_samples & ~15;
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else
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unrolled = 0;
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for (n = 0; n < unrolled; n += 16) {
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__m256 in1[4], in2[4];
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in1[0] = _mm256_load_ps(&dst[n + 0]);
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in2[0] = _mm256_load_ps(&dst[n + 8]);
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in1[1] = _mm256_load_ps(&src0[n + 0]);
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in2[1] = _mm256_load_ps(&src0[n + 8]);
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in1[2] = _mm256_load_ps(&src1[n + 0]);
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in2[2] = _mm256_load_ps(&src1[n + 8]);
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in1[3] = _mm256_load_ps(&src2[n + 0]);
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in2[3] = _mm256_load_ps(&src2[n + 8]);
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in1[0] = _mm256_add_ps(in1[0], in1[1]);
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in2[0] = _mm256_add_ps(in2[0], in2[1]);
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in1[2] = _mm256_add_ps(in1[2], in1[3]);
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in2[2] = _mm256_add_ps(in2[2], in2[3]);
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in1[0] = _mm256_add_ps(in1[0], in1[2]);
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in2[0] = _mm256_add_ps(in2[0], in2[2]);
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_mm256_store_ps(&dst[n + 0], in1[0]);
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_mm256_store_ps(&dst[n + 8], in2[0]);
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}
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for (; n < n_samples; n++) {
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__m128 in[4];
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in[0] = _mm_load_ss(&dst[n]),
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in[1] = _mm_load_ss(&src0[n]),
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in[2] = _mm_load_ss(&src1[n]),
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in[3] = _mm_load_ss(&src2[n]),
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in[0] = _mm_add_ss(in[0], in[1]);
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in[2] = _mm_add_ss(in[2], in[3]);
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in[0] = _mm_add_ss(in[0], in[2]);
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_mm_store_ss(&dst[n], in[0]);
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}
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}
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static inline void mix_2(float * dst, const float * SPA_RESTRICT src, uint32_t n_samples)
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{
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uint32_t n, unrolled;
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if (SPA_IS_ALIGNED(src, 32) &&
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SPA_IS_ALIGNED(dst, 32))
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unrolled = n_samples & ~15;
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else
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unrolled = 0;
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for (n = 0; n < unrolled; n += 16) {
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__m256 in1[2], in2[2];
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in1[0] = _mm256_load_ps(&dst[n + 0]);
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in1[1] = _mm256_load_ps(&dst[n + 8]);
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in2[0] = _mm256_load_ps(&src[n + 0]);
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in2[1] = _mm256_load_ps(&src[n + 8]);
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in1[0] = _mm256_add_ps(in1[0], in2[0]);
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in1[1] = _mm256_add_ps(in1[1], in2[1]);
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_mm256_store_ps(&dst[n + 0], in1[0]);
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_mm256_store_ps(&dst[n + 8], in1[1]);
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}
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for (; n < n_samples; n++) {
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__m128 in1[1], in2[1];
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in1[0] = _mm_load_ss(&dst[n]),
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in2[0] = _mm_load_ss(&src[n]),
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in1[0] = _mm_add_ss(in1[0], in2[0]);
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_mm_store_ss(&dst[n], in1[0]);
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}
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}
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void
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mix_f32_avx(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 * sizeof(float));
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else if (dst != src[0])
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memcpy(dst, src[0], n_samples * sizeof(float));
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for (i = 1; i + 2 < n_src; i += 3)
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mix_4(dst, src[i], src[i + 1], src[i + 2], n_samples);
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for (; i < n_src; i++)
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mix_2(dst, src[i], n_samples);
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}
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