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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.
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->func_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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