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934ab3036e
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64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/* Spa */
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/* SPDX-FileCopyrightText: Copyright © 2021 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 <spa/param/audio/format-utils.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 "volume-ops.h"
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typedef void (*volume_func_t) (struct volume *vol, void * SPA_RESTRICT dst,
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const void * SPA_RESTRICT src, float volume, uint32_t n_samples);
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#define MAKE(func,...) \
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{ func, #func , __VA_ARGS__ }
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static const struct volume_info {
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volume_func_t process;
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const char *name;
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uint32_t cpu_flags;
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} volume_table[] =
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{
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#if defined (HAVE_SSE)
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MAKE(volume_f32_sse, SPA_CPU_FLAG_SSE),
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#endif
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MAKE(volume_f32_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 volume_info *find_volume_info(uint32_t cpu_flags)
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{
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SPA_FOR_EACH_ELEMENT_VAR(volume_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_volume_free(struct volume *vol)
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{
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vol->process = NULL;
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}
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int volume_init(struct volume *vol)
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{
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const struct volume_info *info;
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info = find_volume_info(vol->cpu_flags);
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if (info == NULL)
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return -ENOTSUP;
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vol->cpu_flags = info->cpu_flags;
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vol->func_name = info->name;
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vol->free = impl_volume_free;
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vol->process = info->process;
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return 0;
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}
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