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934ab3036e
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102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/* Spa */
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/* SPDX-FileCopyrightText: Copyright © 2022 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#include <math.h>
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#include <xmmintrin.h>
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#include "peaks-ops.h"
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static inline float hmin_ps(__m128 val)
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{
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__m128 t = _mm_movehl_ps(val, val);
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t = _mm_min_ps(t, val);
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val = _mm_shuffle_ps(t, t, 0x55);
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val = _mm_min_ss(t, val);
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return _mm_cvtss_f32(val);
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}
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static inline float hmax_ps(__m128 val)
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{
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__m128 t = _mm_movehl_ps(val, val);
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t = _mm_max_ps(t, val);
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val = _mm_shuffle_ps(t, t, 0x55);
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val = _mm_max_ss(t, val);
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return _mm_cvtss_f32(val);
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}
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void peaks_min_max_sse(struct peaks *peaks, const float * SPA_RESTRICT src,
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uint32_t n_samples, float *min, float *max)
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{
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uint32_t n;
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__m128 in;
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__m128 mi = _mm_set1_ps(*min);
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__m128 ma = _mm_set1_ps(*max);
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for (n = 0; n < n_samples; n++) {
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if (SPA_IS_ALIGNED(&src[n], 16))
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break;
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in = _mm_set1_ps(src[n]);
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mi = _mm_min_ps(mi, in);
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ma = _mm_max_ps(ma, in);
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}
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for (; n + 15 < n_samples; n += 16) {
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in = _mm_load_ps(&src[n + 0]);
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mi = _mm_min_ps(mi, in);
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ma = _mm_max_ps(ma, in);
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in = _mm_load_ps(&src[n + 4]);
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mi = _mm_min_ps(mi, in);
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ma = _mm_max_ps(ma, in);
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in = _mm_load_ps(&src[n + 8]);
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mi = _mm_min_ps(mi, in);
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ma = _mm_max_ps(ma, in);
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in = _mm_load_ps(&src[n + 12]);
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mi = _mm_min_ps(mi, in);
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ma = _mm_max_ps(ma, in);
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}
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for (; n < n_samples; n++) {
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in = _mm_set1_ps(src[n]);
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mi = _mm_min_ps(mi, in);
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ma = _mm_max_ps(ma, in);
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}
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*min = hmin_ps(mi);
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*max = hmax_ps(ma);
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}
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float peaks_abs_max_sse(struct peaks *peaks, const float * SPA_RESTRICT src,
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uint32_t n_samples, float max)
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{
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uint32_t n;
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__m128 in;
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__m128 ma = _mm_set1_ps(max);
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const __m128 mask = _mm_set1_ps(-0.0f);
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for (n = 0; n < n_samples; n++) {
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if (SPA_IS_ALIGNED(&src[n], 16))
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break;
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in = _mm_set1_ps(src[n]);
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in = _mm_andnot_ps(mask, in);
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ma = _mm_max_ps(ma, in);
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}
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for (; n + 15 < n_samples; n += 16) {
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in = _mm_load_ps(&src[n + 0]);
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in = _mm_andnot_ps(mask, in);
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ma = _mm_max_ps(ma, in);
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in = _mm_load_ps(&src[n + 4]);
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in = _mm_andnot_ps(mask, in);
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ma = _mm_max_ps(ma, in);
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in = _mm_load_ps(&src[n + 8]);
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in = _mm_andnot_ps(mask, in);
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ma = _mm_max_ps(ma, in);
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in = _mm_load_ps(&src[n + 12]);
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in = _mm_andnot_ps(mask, in);
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ma = _mm_max_ps(ma, in);
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}
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for (; n < n_samples; n++) {
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in = _mm_set1_ps(src[n]);
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in = _mm_andnot_ps(mask, in);
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ma = _mm_max_ps(ma, in);
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}
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return hmax_ps(ma);
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}
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