mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-10-29 05:40:27 -04:00
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
/* Spa ALSA Sink
|
|
*
|
|
* Copyright © 2018 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.
|
|
*/
|
|
|
|
#ifndef __SPA_ALSA_UTILS_H__
|
|
#define __SPA_ALSA_UTILS_H__
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <stddef.h>
|
|
|
|
#include <asoundlib.h>
|
|
|
|
#include <spa/support/loop.h>
|
|
#include <spa/support/log.h>
|
|
#include <spa/utils/list.h>
|
|
|
|
#include <spa/node/node.h>
|
|
#include <spa/node/io.h>
|
|
#include <spa/param/param.h>
|
|
#include <spa/param/audio/format-utils.h>
|
|
|
|
#define DEFAULT_RATE 48000
|
|
#define DEFAULT_CHANNELS 2
|
|
|
|
struct props {
|
|
char device[64];
|
|
char device_name[128];
|
|
char card_name[128];
|
|
uint32_t min_latency;
|
|
uint32_t max_latency;
|
|
};
|
|
|
|
#define MAX_BUFFERS 32
|
|
|
|
struct buffer {
|
|
struct spa_buffer *buf;
|
|
struct spa_meta_header *h;
|
|
#define BUFFER_FLAG_OUT (1<<0)
|
|
uint32_t flags;
|
|
struct spa_list link;
|
|
};
|
|
|
|
struct state {
|
|
struct spa_handle handle;
|
|
struct spa_node node;
|
|
|
|
uint32_t seq;
|
|
|
|
struct spa_log *log;
|
|
struct spa_loop *main_loop;
|
|
struct spa_loop *data_loop;
|
|
|
|
snd_pcm_stream_t stream;
|
|
snd_output_t *output;
|
|
|
|
const struct spa_node_callbacks *callbacks;
|
|
void *callbacks_data;
|
|
|
|
struct props props;
|
|
|
|
bool opened;
|
|
snd_pcm_t *hndl;
|
|
|
|
bool have_format;
|
|
struct spa_audio_info current_format;
|
|
|
|
snd_pcm_uframes_t buffer_frames;
|
|
snd_pcm_uframes_t period_frames;
|
|
snd_pcm_format_t format;
|
|
int rate;
|
|
int channels;
|
|
size_t frame_size;
|
|
|
|
struct spa_port_info info;
|
|
struct spa_io_buffers *io;
|
|
struct spa_io_range *range;
|
|
struct spa_io_clock *clock;
|
|
struct spa_io_position *position;
|
|
|
|
struct buffer buffers[MAX_BUFFERS];
|
|
unsigned int n_buffers;
|
|
|
|
struct spa_list free;
|
|
struct spa_list ready;
|
|
|
|
size_t ready_offset;
|
|
|
|
bool started;
|
|
struct spa_source source;
|
|
int timerfd;
|
|
bool alsa_started;
|
|
int threshold;
|
|
|
|
snd_htimestamp_t now;
|
|
int64_t sample_count;
|
|
int64_t filled;
|
|
|
|
uint64_t underrun;
|
|
};
|
|
|
|
int
|
|
spa_alsa_enum_format(struct state *state,
|
|
uint32_t *index,
|
|
const struct spa_pod *filter,
|
|
struct spa_pod **result,
|
|
struct spa_pod_builder *builder);
|
|
|
|
int spa_alsa_set_format(struct state *state, struct spa_audio_info *info, uint32_t flags);
|
|
|
|
int spa_alsa_start(struct state *state, bool xrun_recover);
|
|
int spa_alsa_pause(struct state *state, bool xrun_recover);
|
|
int spa_alsa_close(struct state *state);
|
|
|
|
int spa_alsa_write(struct state *state, snd_pcm_uframes_t silence);
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* __SPA_ALSA_UTILS_H__ */
|