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https://gitlab.freedesktop.org/pipewire/pipewire.git
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d22feab92a
uint32_t i; for (i = 0; i < SPA_N_ELEMENTS(some_array); i++) .. stuff with some_array[i].foo ... becomes: SPA_FOR_EACH_ELEMENT_VAR(some_array, p) .. stuff with p->foo ..
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
/* Spa
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*
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* Copyright © 2022 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 <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <errno.h>
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#include <spa/support/cpu.h>
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#include <spa/support/log.h>
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#include <spa/utils/defs.h>
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#include "peaks-ops.h"
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typedef void (*peaks_min_max_func_t) (struct peaks *peaks, const float * SPA_RESTRICT src,
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uint32_t n_samples, float *min, float *max);
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typedef float (*peaks_abs_max_func_t) (struct peaks *peaks, const float * SPA_RESTRICT src,
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uint32_t n_samples, float max);
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#define MAKE(min_max,abs_max,...) \
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{ min_max, abs_max, #min_max , __VA_ARGS__ }
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static const struct peaks_info {
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peaks_min_max_func_t min_max;
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peaks_abs_max_func_t abs_max;
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const char *name;
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uint32_t cpu_flags;
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} peaks_table[] =
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{
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#if defined (HAVE_SSE)
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MAKE(peaks_min_max_sse, peaks_abs_max_sse, SPA_CPU_FLAG_SSE),
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#endif
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MAKE(peaks_min_max_c, peaks_abs_max_c),
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};
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#undef MAKE
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#define MATCH_CPU_FLAGS(a,b) ((a) == 0 || ((a) & (b)) == a)
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static const struct peaks_info *find_peaks_info(uint32_t cpu_flags)
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{
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SPA_FOR_EACH_ELEMENT_VAR(peaks_table, t) {
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if (MATCH_CPU_FLAGS(t->cpu_flags, cpu_flags))
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return t;
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}
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return NULL;
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}
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static void impl_peaks_free(struct peaks *peaks)
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{
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peaks->min_max = NULL;
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peaks->abs_max = NULL;
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}
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int peaks_init(struct peaks *peaks)
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{
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const struct peaks_info *info;
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info = find_peaks_info(peaks->cpu_flags);
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if (info == NULL)
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return -ENOTSUP;
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peaks->cpu_flags = info->cpu_flags;
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peaks->func_name = info->name;
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peaks->free = impl_peaks_free;
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peaks->min_max = info->min_max;
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peaks->abs_max = info->abs_max;
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return 0;
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}
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