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https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-02 09:01:50 -05:00
565bb2c493
Fix the shuffle arguments. Use another way of making 0x80000000 and use andnot to remove the sign bit.
64 lines
2 KiB
C
64 lines
2 KiB
C
/* Spa
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*
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* Copyright © 2018 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 <math.h>
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#include <xmmintrin.h>
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#include "resample-peaks-impl.h"
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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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static inline float find_abs_max_sse(const float *s, uint32_t n_samples, float m)
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{
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__m128 in[2], max;
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uint32_t n, unrolled;
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const __m128 mask = _mm_set1_ps(-0.0f);
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max = _mm_set1_ps(m);
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unrolled = n_samples & ~7;
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for (n = 0; n < unrolled; n += 8) {
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in[0] = _mm_loadu_ps(&s[n + 0]);
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in[1] = _mm_loadu_ps(&s[n + 4]);
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in[0] = _mm_andnot_ps(mask, in[0]);
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in[1] = _mm_andnot_ps(mask, in[1]);
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max = _mm_max_ps(max, in[0]);
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max = _mm_max_ps(max, in[1]);
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}
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for (; n < n_samples; n++)
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m = fmaxf(fabsf(s[n]), m);
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return fmaxf(hmax_ps(max), m);
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}
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MAKE_PEAKS(sse);
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