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/* Spa
*
* Copyright © 2021 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 "volume-ops.h"
#include <xmmintrin.h>
void
volume_f32_sse(struct volume *vol, void * SPA_RESTRICT dst,
const void * SPA_RESTRICT src, float volume, uint32_t n_samples)
{
uint32_t n, unrolled;
float *d = (float*)dst;
const float *s = (const float*)src;
if (volume == VOLUME_MIN) {
memset(d, 0, n_samples * sizeof(float));
}
else if (volume == VOLUME_NORM) {
spa_memcpy(d, s, n_samples * sizeof(float));
}
else {
__m128 t[4];
const __m128 vol = _mm_set1_ps(volume);
if (SPA_IS_ALIGNED(d, 16) &&
SPA_IS_ALIGNED(s, 16))
unrolled = n_samples & ~15;
else
unrolled = 0;
for(n = 0; n < unrolled; n += 16) {
t[0] = _mm_load_ps(&s[n]);
t[1] = _mm_load_ps(&s[n+4]);
t[2] = _mm_load_ps(&s[n+8]);
t[3] = _mm_load_ps(&s[n+12]);
_mm_store_ps(&d[n], _mm_mul_ps(t[0], vol));
_mm_store_ps(&d[n+4], _mm_mul_ps(t[1], vol));
_mm_store_ps(&d[n+8], _mm_mul_ps(t[2], vol));
_mm_store_ps(&d[n+12], _mm_mul_ps(t[3], vol));
}
for(; n < n_samples; n++)
_mm_store_ss(&d[n], _mm_mul_ss(_mm_load_ss(&s[n]), vol));
}
}
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