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https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2026-03-22 05:33:53 -04:00
c02cdcb5ce
Add an alternative avx2 s32_to_f32d implementation that doesn't use the gather function for when gather is slow. Don't overwrite the orinal cpu_flags but store the selected flags in a new variable. Use this to debug the selected function cpu flags. Build libraries with defines from previous libraries so that we can reuse functions from them. We can then remove the SSE2 | SLOW_GATHER function selection from the list. We will now select avx2 and it will then switch implementations based on the CPU flags.
69 lines
1.6 KiB
C
69 lines
1.6 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 <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->func_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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