mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-03 09:01:54 -05:00
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* Spa
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*
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* Copyright © 2021 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 <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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size_t i;
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for (i = 0; i < SPA_N_ELEMENTS(volume_table); i++) {
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if (!MATCH_CPU_FLAGS(volume_table[i].cpu_flags, cpu_flags))
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continue;
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return &volume_table[i];
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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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