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934ab3036e
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46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/* Spa */
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/* SPDX-FileCopyrightText: Copyright © 2021 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#include "volume-ops.h"
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#include <xmmintrin.h>
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void
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volume_f32_sse(struct volume *vol, void * SPA_RESTRICT dst,
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const void * SPA_RESTRICT src, float volume, uint32_t n_samples)
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{
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uint32_t n, unrolled;
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float *d = (float*)dst;
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const float *s = (const float*)src;
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if (volume == VOLUME_MIN) {
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memset(d, 0, n_samples * sizeof(float));
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}
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else if (volume == VOLUME_NORM) {
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spa_memcpy(d, s, n_samples * sizeof(float));
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}
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else {
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__m128 t[4];
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const __m128 vol = _mm_set1_ps(volume);
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if (SPA_IS_ALIGNED(d, 16) &&
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SPA_IS_ALIGNED(s, 16))
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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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t[0] = _mm_load_ps(&s[n]);
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t[1] = _mm_load_ps(&s[n+4]);
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t[2] = _mm_load_ps(&s[n+8]);
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t[3] = _mm_load_ps(&s[n+12]);
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_mm_store_ps(&d[n], _mm_mul_ps(t[0], vol));
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_mm_store_ps(&d[n+4], _mm_mul_ps(t[1], vol));
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_mm_store_ps(&d[n+8], _mm_mul_ps(t[2], vol));
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_mm_store_ps(&d[n+12], _mm_mul_ps(t[3], vol));
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}
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for(; n < n_samples; n++)
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_mm_store_ss(&d[n], _mm_mul_ss(_mm_load_ss(&s[n]), vol));
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}
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}
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