mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-05 13:30:02 -05:00
8a6ce3b179
Make allocparams into pod objects. This makes it easy to serialize, copy, create and intersect them. Add convenience macros for properties Add helper function to collect object properties.
139 lines
3 KiB
C
139 lines
3 KiB
C
/* Spa ALSA Sink
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* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __SPA_ALSA_UTILS_H__
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#define __SPA_ALSA_UTILS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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#include <asoundlib.h>
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#include <spa/id-map.h>
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#include <spa/log.h>
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#include <spa/list.h>
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#include <spa/node.h>
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#include <spa/loop.h>
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#include <spa/ringbuffer.h>
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#include <spa/audio/format.h>
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#include <spa/format-builder.h>
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typedef struct _SpaALSAState SpaALSAState;
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typedef struct _SpaALSABuffer SpaALSABuffer;
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typedef struct {
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char device[64];
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char device_name[128];
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char card_name[128];
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uint32_t period_size;
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uint32_t periods;
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bool period_event;
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} SpaALSAProps;
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#define MAX_BUFFERS 64
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struct _SpaALSABuffer {
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SpaBuffer *outbuf;
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SpaMetaHeader *h;
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SpaMetaRingbuffer *rb;
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bool outstanding;
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SpaList link;
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};
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typedef struct {
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uint32_t node;
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uint32_t clock;
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} URI;
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struct _SpaALSAState {
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SpaHandle handle;
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SpaNode node;
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SpaClock clock;
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uint32_t seq;
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URI uri;
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SpaIDMap *map;
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SpaLog *log;
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SpaLoop *main_loop;
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SpaLoop *data_loop;
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snd_pcm_stream_t stream;
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snd_output_t *output;
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SpaNodeEventCallback event_cb;
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void *user_data;
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uint8_t props_buffer[1024];
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SpaALSAProps props;
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bool opened;
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snd_pcm_t *hndl;
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bool have_format;
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SpaAudioInfo current_format;
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uint8_t format_buffer[1024];
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snd_pcm_sframes_t buffer_frames;
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snd_pcm_sframes_t period_frames;
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snd_pcm_format_t format;
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int rate;
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int channels;
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size_t frame_size;
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SpaPortInfo info;
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SpaAllocParam *params[3];
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uint8_t params_buffer[1024];
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void *io;
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SpaALSABuffer buffers[MAX_BUFFERS];
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unsigned int n_buffers;
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bool use_ringbuffer;
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SpaALSABuffer *ringbuffer;
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SpaList free;
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SpaList ready;
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size_t ready_offset;
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bool started;
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int n_fds;
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struct pollfd fds[16];
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SpaSource sources[16];
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int64_t sample_count;
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int64_t last_ticks;
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int64_t last_monotonic;
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};
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int spa_alsa_set_format (SpaALSAState *state,
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SpaAudioInfo *info,
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SpaPortFormatFlags flags);
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SpaResult spa_alsa_start (SpaALSAState *state, bool xrun_recover);
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SpaResult spa_alsa_pause (SpaALSAState *state, bool xrun_recover);
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SpaResult spa_alsa_close (SpaALSAState *state);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* __SPA_ALSA_UTILS_H__ */
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