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https://gitlab.freedesktop.org/pipewire/pipewire.git
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dddbe289fb
The S8, S16, S24 and S32 formats are now supported. The mixing process also takes into account the number of channels.
128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/* Spa
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*
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* Copyright © 2019 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/support/cpu.h>
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#include <spa/utils/defs.h>
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#include <spa/param/audio/format-utils.h>
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#include "mix-ops.h"
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typedef void (*mix_func_t) (struct mix_ops *ops, void * SPA_RESTRICT dst,
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const void * SPA_RESTRICT src[], uint32_t n_src, uint32_t n_samples);
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struct mix_info {
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uint32_t fmt;
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uint32_t n_channels;
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uint32_t cpu_flags;
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uint32_t stride;
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mix_func_t process;
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};
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static struct mix_info mix_table[] =
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{
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/* f32 */
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#if defined(HAVE_AVX)
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{ SPA_AUDIO_FORMAT_F32, 1, SPA_CPU_FLAG_AVX, 4, mix_f32_avx },
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{ SPA_AUDIO_FORMAT_F32P, 1, SPA_CPU_FLAG_AVX, 4, mix_f32_avx },
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#endif
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#if defined (HAVE_SSE)
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{ SPA_AUDIO_FORMAT_F32, 1, SPA_CPU_FLAG_SSE, 4, mix_f32_sse },
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{ SPA_AUDIO_FORMAT_F32P, 1, SPA_CPU_FLAG_SSE, 4, mix_f32_sse },
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#endif
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{ SPA_AUDIO_FORMAT_F32, 0, 0, 4, mix_f32_c },
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{ SPA_AUDIO_FORMAT_F32P, 0, 0, 4, mix_f32_c },
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/* f64 */
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#if defined (HAVE_SSE2)
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{ SPA_AUDIO_FORMAT_F64, 1, SPA_CPU_FLAG_SSE2, 8, mix_f64_sse2 },
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{ SPA_AUDIO_FORMAT_F64P, 1, SPA_CPU_FLAG_SSE2, 8, mix_f64_sse2 },
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#endif
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{ SPA_AUDIO_FORMAT_F64, 0, 0, 8, mix_f64_c },
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{ SPA_AUDIO_FORMAT_F64P, 0, 0, 8, mix_f64_c },
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/* s8 */
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{ SPA_AUDIO_FORMAT_S8, 0, 0, 1, mix_s8_c },
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{ SPA_AUDIO_FORMAT_S8P, 0, 0, 1, mix_s8_c },
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/* s16 */
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{ SPA_AUDIO_FORMAT_S16, 0, 0, 2, mix_s16_c },
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{ SPA_AUDIO_FORMAT_S16P, 0, 0, 2, mix_s16_c },
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/* s24 */
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{ SPA_AUDIO_FORMAT_S24, 0, 0, 3, mix_s24_c },
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{ SPA_AUDIO_FORMAT_S24P, 0, 0, 3, mix_s24_c },
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/* s32 */
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{ SPA_AUDIO_FORMAT_S32, 0, 0, 4, mix_s32_c },
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{ SPA_AUDIO_FORMAT_S32P, 0, 0, 4, mix_s32_c },
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};
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#define MATCH_CHAN(a,b) ((a) == 0 || (a) == (b))
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#define MATCH_CPU_FLAGS(a,b) ((a) == 0 || ((a) & (b)) == a)
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static const struct mix_info *find_mix_info(uint32_t fmt,
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uint32_t n_channels, 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(mix_table); i++) {
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if (mix_table[i].fmt == fmt &&
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MATCH_CHAN(mix_table[i].n_channels, n_channels) &&
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MATCH_CPU_FLAGS(mix_table[i].cpu_flags, cpu_flags))
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return &mix_table[i];
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}
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return NULL;
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}
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static void impl_mix_ops_clear(struct mix_ops *ops, void * SPA_RESTRICT dst, uint32_t n_samples)
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{
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const struct mix_info *info = ops->priv;
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memset(dst, 0, n_samples * info->stride);
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}
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static void impl_mix_ops_free(struct mix_ops *ops)
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{
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spa_zero(*ops);
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}
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int mix_ops_init(struct mix_ops *ops)
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{
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const struct mix_info *info;
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info = find_mix_info(ops->fmt, ops->n_channels, ops->cpu_flags);
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if (info == NULL)
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return -ENOTSUP;
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ops->priv = info;
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ops->cpu_flags = info->cpu_flags;
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ops->clear = impl_mix_ops_clear;
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ops->process = info->process;
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ops->free = impl_mix_ops_free;
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return 0;
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}
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