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https://gitlab.freedesktop.org/pipewire/pipewire.git
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419517fd55
Move resampler implementations to a -c version. Compile some of the functions with other flags to make them more optimized.
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/* Spa
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*
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* Copyright © 2018 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 <math.h>
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#include <errno.h>
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#include <spa/param/audio/format.h>
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#include "resample-peaks-impl.h"
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struct resample_info {
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uint32_t format;
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uint32_t cpu_flags;
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void (*process) (struct resample *r,
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const void * SPA_RESTRICT src[], uint32_t *in_len,
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void * SPA_RESTRICT dst[], uint32_t *out_len);
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};
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static struct resample_info resample_table[] =
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{
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#if defined (HAVE_SSE)
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{ SPA_AUDIO_FORMAT_F32, SPA_CPU_FLAG_SSE, resample_peaks_process_sse, },
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#endif
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{ SPA_AUDIO_FORMAT_F32, 0, resample_peaks_process_c, },
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};
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#define MATCH_CPU_FLAGS(a,b) ((a) == 0 || ((a) & (b)) == a)
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static const struct resample_info *find_resample_info(uint32_t format, 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(resample_table); i++) {
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if (resample_table[i].format == format &&
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MATCH_CPU_FLAGS(resample_table[i].cpu_flags, cpu_flags)) {
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return &resample_table[i];
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}
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}
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return NULL;
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}
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static void impl_peaks_free(struct resample *r)
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{
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free(r->data);
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r->data = NULL;
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}
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static void impl_peaks_update_rate(struct resample *r, double rate)
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{
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}
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static uint32_t impl_peaks_delay (struct resample *r)
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{
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return 0;
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}
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static uint32_t impl_peaks_in_len(struct resample *r, uint32_t out_len)
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{
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return out_len;
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}
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static void impl_peaks_reset (struct resample *r)
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{
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struct peaks_data *d = r->data;
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d->i_count = d->o_count = 0;
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}
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int resample_peaks_init(struct resample *r)
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{
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struct peaks_data *d;
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const struct resample_info *info;
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r->free = impl_peaks_free;
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r->update_rate = impl_peaks_update_rate;
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if ((info = find_resample_info(SPA_AUDIO_FORMAT_F32, r->cpu_flags)) == NULL)
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return -ENOTSUP;
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r->process = info->process;
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r->reset = impl_peaks_reset;
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r->delay = impl_peaks_delay;
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r->in_len = impl_peaks_in_len;
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d = r->data = calloc(1, sizeof(struct peaks_data) + sizeof(float) * r->channels);
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if (r->data == NULL)
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return -errno;
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spa_log_debug(r->log, "peaks %p: in:%d out:%d features:%08x:%08x", r,
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r->i_rate, r->o_rate, r->cpu_flags, info->cpu_flags);
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r->cpu_flags = info->cpu_flags;
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d->i_count = d->o_count = 0;
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return 0;
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}
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