mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-12-24 08:56:47 -05:00
3f4ccaaea2
Add connection message for PORT_COMMAND Add rtkit support to ask for realtime priority work on stream states and improve negotiation Rework of port linking works, keep separate state for realtime threads and use message passing to update the state. Don't try to link nodes that are removed. Open the device in the ALSA monitor to detect source or sink Implement send_command as async methods on the plugins, use async replies to sync start and stop. Work on alsa sink. Implement async PAUSE/START on v4l2 src. move the STREAMON/OFF calls to the mainloop because they have high latency, add the poll descriptors from the data loop.
132 lines
2.9 KiB
C
132 lines
2.9 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/queue.h>
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#include <spa/node.h>
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#include <spa/audio/format.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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SpaProps props;
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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 buffer_time;
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uint32_t period_time;
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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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bool outstanding;
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SpaALSABuffer *next;
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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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SpaPoll *main_loop;
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SpaPoll *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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SpaALSAProps props[2];
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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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SpaFormatAudio query_format;
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SpaFormatAudio current_format;
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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[2];
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SpaAllocParamBuffers param_buffers;
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SpaAllocParamMetaEnable param_meta;
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SpaPortStatus status;
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SpaALSABuffer buffers[MAX_BUFFERS];
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unsigned int n_buffers;
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SpaQueue free;
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SpaQueue ready;
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size_t ready_offset;
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bool started;
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SpaPollFd fds[16];
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SpaPollItem poll;
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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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SpaFormatAudio *fmt,
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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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