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/* Spa
*
* Copyright © 2022 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 <math.h>
#include <xmmintrin.h>
#include "peaks-ops.h"
static inline float hmin_ps(__m128 val)
{
__m128 t = _mm_movehl_ps(val, val);
t = _mm_min_ps(t, val);
val = _mm_shuffle_ps(t, t, 0x55);
val = _mm_min_ss(t, val);
return _mm_cvtss_f32(val);
}
static inline float hmax_ps(__m128 val)
{
__m128 t = _mm_movehl_ps(val, val);
t = _mm_max_ps(t, val);
val = _mm_shuffle_ps(t, t, 0x55);
val = _mm_max_ss(t, val);
return _mm_cvtss_f32(val);
}
void peaks_min_max_sse(struct peaks *peaks, const float * SPA_RESTRICT src,
uint32_t n_samples, float *min, float *max)
{
uint32_t n;
__m128 in;
__m128 mi = _mm_set1_ps(*min);
__m128 ma = _mm_set1_ps(*max);
for (n = 0; n < n_samples; n++) {
if (SPA_IS_ALIGNED(&src[n], 16))
break;
in = _mm_set1_ps(src[n]);
mi = _mm_min_ps(mi, in);
ma = _mm_max_ps(ma, in);
}
for (; n + 15 < n_samples; n += 16) {
in = _mm_load_ps(&src[n + 0]);
mi = _mm_min_ps(mi, in);
ma = _mm_max_ps(ma, in);
in = _mm_load_ps(&src[n + 4]);
mi = _mm_min_ps(mi, in);
ma = _mm_max_ps(ma, in);
in = _mm_load_ps(&src[n + 8]);
mi = _mm_min_ps(mi, in);
ma = _mm_max_ps(ma, in);
in = _mm_load_ps(&src[n + 12]);
mi = _mm_min_ps(mi, in);
ma = _mm_max_ps(ma, in);
}
for (; n < n_samples; n++) {
in = _mm_set1_ps(src[n]);
mi = _mm_min_ps(mi, in);
ma = _mm_max_ps(ma, in);
}
*min = hmin_ps(mi);
*max = hmax_ps(ma);
}
float peaks_abs_max_sse(struct peaks *peaks, const float * SPA_RESTRICT src,
uint32_t n_samples, float max)
{
uint32_t n;
__m128 in;
__m128 ma = _mm_set1_ps(max);
const __m128 mask = _mm_set1_ps(-0.0f);
for (n = 0; n < n_samples; n++) {
if (SPA_IS_ALIGNED(&src[n], 16))
break;
in = _mm_set1_ps(src[n]);
in = _mm_andnot_ps(mask, in);
ma = _mm_max_ps(ma, in);
}
for (; n + 15 < n_samples; n += 16) {
in = _mm_load_ps(&src[n + 0]);
in = _mm_andnot_ps(mask, in);
ma = _mm_max_ps(ma, in);
in = _mm_load_ps(&src[n + 4]);
in = _mm_andnot_ps(mask, in);
ma = _mm_max_ps(ma, in);
in = _mm_load_ps(&src[n + 8]);
in = _mm_andnot_ps(mask, in);
ma = _mm_max_ps(ma, in);
in = _mm_load_ps(&src[n + 12]);
in = _mm_andnot_ps(mask, in);
ma = _mm_max_ps(ma, in);
}
for (; n < n_samples; n++) {
in = _mm_set1_ps(src[n]);
in = _mm_andnot_ps(mask, in);
ma = _mm_max_ps(ma, in);
}
return hmax_ps(ma);
}
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