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Diffstat (limited to '')
| -rw-r--r-- | spa/plugins/audiomixer/mix-ops.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/spa/plugins/audiomixer/mix-ops.c b/spa/plugins/audiomixer/mix-ops.c new file mode 100644 index 0000000..b459926 --- /dev/null +++ b/spa/plugins/audiomixer/mix-ops.c @@ -0,0 +1,136 @@ +/* Spa + * + * Copyright © 2019 Wim Taymans + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <string.h> +#include <stdio.h> +#include <math.h> + +#include <spa/support/cpu.h> +#include <spa/utils/defs.h> +#include <spa/param/audio/format-utils.h> + +#include "mix-ops.h" + +typedef void (*mix_func_t) (struct mix_ops *ops, void * SPA_RESTRICT dst, + const void * SPA_RESTRICT src[], uint32_t n_src, uint32_t n_samples); + +struct mix_info { + uint32_t fmt; + uint32_t n_channels; + uint32_t cpu_flags; + uint32_t stride; + mix_func_t process; +}; + +static struct mix_info mix_table[] = +{ + /* f32 */ +#if defined(HAVE_AVX) + { SPA_AUDIO_FORMAT_F32, 0, SPA_CPU_FLAG_AVX, 4, mix_f32_avx }, + { SPA_AUDIO_FORMAT_F32P, 0, SPA_CPU_FLAG_AVX, 4, mix_f32_avx }, +#endif +#if defined (HAVE_SSE) + { SPA_AUDIO_FORMAT_F32, 0, SPA_CPU_FLAG_SSE, 4, mix_f32_sse }, + { SPA_AUDIO_FORMAT_F32P, 0, SPA_CPU_FLAG_SSE, 4, mix_f32_sse }, +#endif + { SPA_AUDIO_FORMAT_F32, 0, 0, 4, mix_f32_c }, + { SPA_AUDIO_FORMAT_F32P, 0, 0, 4, mix_f32_c }, + + /* f64 */ +#if defined (HAVE_SSE2) + { SPA_AUDIO_FORMAT_F64, 0, SPA_CPU_FLAG_SSE2, 8, mix_f64_sse2 }, + { SPA_AUDIO_FORMAT_F64P, 0, SPA_CPU_FLAG_SSE2, 8, mix_f64_sse2 }, +#endif + { SPA_AUDIO_FORMAT_F64, 0, 0, 8, mix_f64_c }, + { SPA_AUDIO_FORMAT_F64P, 0, 0, 8, mix_f64_c }, + + /* s8 */ + { SPA_AUDIO_FORMAT_S8, 0, 0, 1, mix_s8_c }, + { SPA_AUDIO_FORMAT_S8P, 0, 0, 1, mix_s8_c }, + { SPA_AUDIO_FORMAT_U8, 0, 0, 1, mix_u8_c }, + { SPA_AUDIO_FORMAT_U8P, 0, 0, 1, mix_u8_c }, + + /* s16 */ + { SPA_AUDIO_FORMAT_S16, 0, 0, 2, mix_s16_c }, + { SPA_AUDIO_FORMAT_S16P, 0, 0, 2, mix_s16_c }, + { SPA_AUDIO_FORMAT_U16, 0, 0, 2, mix_u16_c }, + + /* s24 */ + { SPA_AUDIO_FORMAT_S24, 0, 0, 3, mix_s24_c }, + { SPA_AUDIO_FORMAT_S24P, 0, 0, 3, mix_s24_c }, + { SPA_AUDIO_FORMAT_U24, 0, 0, 3, mix_u24_c }, + + /* s32 */ + { SPA_AUDIO_FORMAT_S32, 0, 0, 4, mix_s32_c }, + { SPA_AUDIO_FORMAT_S32P, 0, 0, 4, mix_s32_c }, + { SPA_AUDIO_FORMAT_U32, 0, 0, 4, mix_u32_c }, + + /* s24_32 */ + { SPA_AUDIO_FORMAT_S24_32, 0, 0, 4, mix_s24_32_c }, + { SPA_AUDIO_FORMAT_S24_32P, 0, 0, 4, mix_s24_32_c }, + { SPA_AUDIO_FORMAT_U24_32, 0, 0, 4, mix_u24_32_c }, +}; + +#define MATCH_CHAN(a,b) ((a) == 0 || (a) == (b)) +#define MATCH_CPU_FLAGS(a,b) ((a) == 0 || ((a) & (b)) == a) + +static const struct mix_info *find_mix_info(uint32_t fmt, + uint32_t n_channels, uint32_t cpu_flags) +{ + SPA_FOR_EACH_ELEMENT_VAR(mix_table, t) { + if (t->fmt == fmt && + MATCH_CHAN(t->n_channels, n_channels) && + MATCH_CPU_FLAGS(t->cpu_flags, cpu_flags)) + return t; + } + return NULL; +} + +static void impl_mix_ops_clear(struct mix_ops *ops, void * SPA_RESTRICT dst, uint32_t n_samples) +{ + const struct mix_info *info = ops->priv; + memset(dst, 0, n_samples * info->stride); +} + +static void impl_mix_ops_free(struct mix_ops *ops) +{ + spa_zero(*ops); +} + +int mix_ops_init(struct mix_ops *ops) +{ + const struct mix_info *info; + + info = find_mix_info(ops->fmt, ops->n_channels, ops->cpu_flags); + if (info == NULL) + return -ENOTSUP; + + ops->priv = info; + ops->cpu_flags = info->cpu_flags; + ops->clear = impl_mix_ops_clear; + ops->process = info->process; + ops->free = impl_mix_ops_free; + + return 0; +} |