PulseAudio 16.1
stream.h
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1#ifndef foostreamhfoo
2#define foostreamhfoo
3
4/***
5 This file is part of PulseAudio.
6
7 Copyright 2004-2006 Lennart Poettering
8 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
9
10 PulseAudio is free software; you can redistribute it and/or modify
11 it under the terms of the GNU Lesser General Public License as published
12 by the Free Software Foundation; either version 2.1 of the License,
13 or (at your option) any later version.
14
15 PulseAudio is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
19
20 You should have received a copy of the GNU Lesser General Public License
21 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
22***/
23
24#include <sys/types.h>
25
26#include <pulse/sample.h>
27#include <pulse/format.h>
28#include <pulse/channelmap.h>
29#include <pulse/volume.h>
30#include <pulse/def.h>
31#include <pulse/cdecl.h>
32#include <pulse/operation.h>
33#include <pulse/context.h>
34#include <pulse/proplist.h>
35
286PA_C_DECL_BEGIN
287
289typedef struct pa_stream pa_stream;
290
292typedef void (*pa_stream_success_cb_t) (pa_stream*s, int success, void *userdata);
293
295typedef void (*pa_stream_request_cb_t)(pa_stream *p, size_t nbytes, void *userdata);
296
298typedef void (*pa_stream_notify_cb_t)(pa_stream *p, void *userdata);
299
306typedef void (*pa_stream_event_cb_t)(pa_stream *p, const char *name, pa_proplist *pl, void *userdata);
307
312 pa_context *c ,
313 const char *name ,
314 const pa_sample_spec *ss ,
315 const pa_channel_map *map );
316
321 pa_context *c ,
322 const char *name ,
323 const pa_sample_spec *ss ,
324 const pa_channel_map *map ,
325 pa_proplist *p );
326
332 pa_context *c ,
333 const char *name ,
334 pa_format_info * const * formats ,
335 unsigned int n_formats ,
336 pa_proplist *p );
337
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416 pa_stream *s ,
417 const char *dev ,
418 const pa_buffer_attr *attr ,
419 pa_stream_flags_t flags ,
420 const pa_cvolume *volume ,
421 pa_stream *sync_stream );
422
425 pa_stream *s ,
426 const char *dev ,
427 const pa_buffer_attr *attr ,
428 pa_stream_flags_t flags );
429
432
473 pa_stream *p,
474 void **data,
475 size_t *nbytes);
476
487 pa_stream *p);
488
514 pa_stream *p ,
515 const void *data ,
516 size_t nbytes ,
517 pa_free_cb_t free_cb ,
518 int64_t offset ,
519 pa_seek_mode_t seek );
520
524 pa_stream *p ,
525 const void *data ,
526 size_t nbytes ,
527 pa_free_cb_t free_cb ,
528 void *free_cb_data ,
529 int64_t offset ,
530 pa_seek_mode_t seek );
531
551 pa_stream *p ,
552 const void **data ,
553 size_t *nbytes );
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677pa_operation* pa_stream_set_name(pa_stream *s, const char *name, pa_stream_success_cb_t cb, void *userdata);
678
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730int pa_stream_get_latency(pa_stream *s, pa_usec_t *r_usec, int *negative);
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793pa_operation *pa_stream_proplist_remove(pa_stream *s, const char *const keys[], pa_stream_success_cb_t cb, void *userdata);
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799int pa_stream_set_monitor_stream(pa_stream *s, uint32_t sink_input_idx);
800
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806PA_C_DECL_END
807
808#endif
Constants and routines for channel mapping handling.
Connection contexts for asynchronous communication with a server.
struct pa_context pa_context
An opaque connection context to a daemon.
Definition: context.h:154
Global definitions.
void(* pa_free_cb_t)(void *p)
A generic free() like callback prototype.
Definition: def.h:1037
enum pa_stream_flags pa_stream_flags_t
Some special flags for stream connections.
enum pa_stream_state pa_stream_state_t
The state of a stream.
enum pa_seek_mode pa_seek_mode_t
Seek type for pa_stream_write().
Utility functions for handling a stream or sink format.
Asynchronous operations.
struct pa_operation pa_operation
An asynchronous operation object.
Definition: operation.h:33
Property list constants and functions.
enum pa_update_mode pa_update_mode_t
Update mode enum for pa_proplist_update().
struct pa_proplist pa_proplist
A property list object.
Definition: proplist.h:278
Constants and routines for sample type handling.
uint64_t pa_usec_t
Type for usec specifications (unsigned).
Definition: sample.h:264
uint32_t pa_stream_get_monitor_stream(const pa_stream *s)
Return the sink input index previously set with pa_stream_set_monitor_stream().
pa_operation * pa_stream_proplist_update(pa_stream *s, pa_update_mode_t mode, pa_proplist *p, pa_stream_success_cb_t cb, void *userdata)
Update the property list of the sink input/source output of this stream, adding new entries.
pa_operation * pa_stream_trigger(pa_stream *s, pa_stream_success_cb_t cb, void *userdata)
Request immediate start of playback on this stream.
const pa_timing_info * pa_stream_get_timing_info(pa_stream *s)
Return the latest raw timing data structure.
pa_operation * pa_stream_update_sample_rate(pa_stream *s, uint32_t rate, pa_stream_success_cb_t cb, void *userdata)
Change the stream sampling rate during playback.
pa_stream * pa_stream_new(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map)
Create a new, unconnected stream with the specified name and sample type.
const pa_sample_spec * pa_stream_get_sample_spec(pa_stream *s)
Return a pointer to the stream's sample specification.
void pa_stream_set_state_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called whenever the state of the stream changes.
int pa_stream_cancel_write(pa_stream *p)
Reverses the effect of pa_stream_begin_write() dropping all data that has already been placed in the ...
int pa_stream_set_monitor_stream(pa_stream *s, uint32_t sink_input_idx)
For record streams connected to a monitor source: monitor only a very specific sink input of the sink...
void pa_stream_set_write_callback(pa_stream *p, pa_stream_request_cb_t cb, void *userdata)
Set the callback function that is called when new data may be written to the stream.
int pa_stream_drop(pa_stream *p)
Remove the current fragment on record streams.
int64_t pa_stream_get_underflow_index(const pa_stream *p)
Return at what position the latest underflow occurred, or -1 if this information is not known (e....
const pa_buffer_attr * pa_stream_get_buffer_attr(pa_stream *s)
Return the per-stream server-side buffer metrics of the stream.
pa_operation * pa_stream_drain(pa_stream *s, pa_stream_success_cb_t cb, void *userdata)
Drain a playback stream.
pa_operation * pa_stream_update_timing_info(pa_stream *p, pa_stream_success_cb_t cb, void *userdata)
Request a timing info structure update for a stream.
void pa_stream_set_suspended_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called whenever the sink/source this stream is connected to is susp...
int pa_stream_write(pa_stream *p, const void *data, size_t nbytes, pa_free_cb_t free_cb, int64_t offset, pa_seek_mode_t seek)
Write some data to the server (for playback streams).
pa_stream * pa_stream_new_with_proplist(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map, pa_proplist *p)
Create a new, unconnected stream with the specified name and sample type, and specify the initial str...
void pa_stream_set_event_callback(pa_stream *p, pa_stream_event_cb_t cb, void *userdata)
Set the callback function that is called whenever a meta/policy control event is received.
pa_operation * pa_stream_cork(pa_stream *s, int b, pa_stream_success_cb_t cb, void *userdata)
Pause (or resume) playback of this stream temporarily.
pa_operation * pa_stream_proplist_remove(pa_stream *s, const char *const keys[], pa_stream_success_cb_t cb, void *userdata)
Update the property list of the sink input/source output of this stream, remove entries.
void pa_stream_set_underflow_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called when a buffer underflow happens.
void(* pa_stream_success_cb_t)(pa_stream *s, int success, void *userdata)
A generic callback for operation completion.
Definition: stream.h:292
void pa_stream_set_buffer_attr_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called whenever the buffer attributes on the server side change.
pa_context * pa_stream_get_context(const pa_stream *p)
Return the context this stream is attached to.
int pa_stream_begin_write(pa_stream *p, void **data, size_t *nbytes)
Prepare writing data to the server (for playback streams).
void pa_stream_set_moved_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called whenever the stream is moved to a different sink/source.
pa_operation * pa_stream_set_name(pa_stream *s, const char *name, pa_stream_success_cb_t cb, void *userdata)
Rename the stream.
void pa_stream_unref(pa_stream *s)
Decrease the reference counter by one.
void(* pa_stream_event_cb_t)(pa_stream *p, const char *name, pa_proplist *pl, void *userdata)
A callback for asynchronous meta/policy event messages.
Definition: stream.h:306
int pa_stream_is_corked(const pa_stream *s)
Return 1 if the this stream has been corked.
size_t pa_stream_writable_size(const pa_stream *p)
Return the number of bytes requested by the server that have not yet been written.
const pa_channel_map * pa_stream_get_channel_map(pa_stream *s)
Return a pointer to the stream's channel map.
uint32_t pa_stream_get_device_index(const pa_stream *s)
Return the index of the sink or source this stream is connected to in the server.
struct pa_stream pa_stream
An opaque stream for playback or recording.
Definition: stream.h:289
pa_operation * pa_stream_flush(pa_stream *s, pa_stream_success_cb_t cb, void *userdata)
Flush the playback or record buffer of this stream.
int pa_stream_get_time(pa_stream *s, pa_usec_t *r_usec)
Return the current playback/recording time.
void pa_stream_set_latency_update_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called whenever a latency information update happens.
uint32_t pa_stream_get_index(const pa_stream *s)
Return the sink input resp. source output index this stream is identified in the server with.
int pa_stream_disconnect(pa_stream *s)
Disconnect a stream from a source/sink.
int pa_stream_get_latency(pa_stream *s, pa_usec_t *r_usec, int *negative)
Determine the total stream latency.
size_t pa_stream_readable_size(const pa_stream *p)
Return the number of bytes that may be read using pa_stream_peek().
void pa_stream_set_started_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called when the server starts playback after an underrun or on init...
int pa_stream_write_ext_free(pa_stream *p, const void *data, size_t nbytes, pa_free_cb_t free_cb, void *free_cb_data, int64_t offset, pa_seek_mode_t seek)
Function does exactly the same as pa_stream_write() with the difference that free_cb_data is passed t...
int pa_stream_connect_playback(pa_stream *s, const char *dev, const pa_buffer_attr *attr, pa_stream_flags_t flags, const pa_cvolume *volume, pa_stream *sync_stream)
Connect the stream to a sink.
void pa_stream_set_read_callback(pa_stream *p, pa_stream_request_cb_t cb, void *userdata)
Set the callback function that is called when new data is available from the stream.
void(* pa_stream_request_cb_t)(pa_stream *p, size_t nbytes, void *userdata)
A generic request callback.
Definition: stream.h:295
int pa_stream_connect_record(pa_stream *s, const char *dev, const pa_buffer_attr *attr, pa_stream_flags_t flags)
Connect the stream to a source.
pa_operation * pa_stream_set_buffer_attr(pa_stream *s, const pa_buffer_attr *attr, pa_stream_success_cb_t cb, void *userdata)
Change the buffer metrics of the stream during playback.
const char * pa_stream_get_device_name(const pa_stream *s)
Return the name of the sink or source this stream is connected to in the server.
int pa_stream_peek(pa_stream *p, const void **data, size_t *nbytes)
Read the next fragment from the buffer (for recording streams).
void(* pa_stream_notify_cb_t)(pa_stream *p, void *userdata)
A generic notification callback.
Definition: stream.h:298
pa_operation * pa_stream_prebuf(pa_stream *s, pa_stream_success_cb_t cb, void *userdata)
Reenable prebuffering if specified in the pa_buffer_attr structure.
int pa_stream_is_suspended(const pa_stream *s)
Return 1 if the sink or source this stream is connected to has been suspended.
pa_stream * pa_stream_new_extended(pa_context *c, const char *name, pa_format_info *const *formats, unsigned int n_formats, pa_proplist *p)
Create a new, unconnected stream with the specified name, the set of formats this client can provide,...
void pa_stream_set_overflow_callback(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata)
Set the callback function that is called when a buffer overflow happens.
pa_stream * pa_stream_ref(pa_stream *s)
Increase the reference counter by one.
const pa_format_info * pa_stream_get_format_info(const pa_stream *s)
Return a pointer to the stream's format.
pa_stream_state_t pa_stream_get_state(const pa_stream *p)
Return the current state of the stream.
Playback and record buffer metrics.
Definition: def.h:389
A channel map which can be used to attach labels to specific channels of a stream.
Definition: channelmap.h:264
A structure encapsulating a per-channel volume.
Definition: volume.h:145
Represents the format of data provided in a stream or processed by a sink.
Definition: format.h:98
A sample format and attribute specification.
Definition: sample.h:252
A structure for all kinds of timing information of a stream.
Definition: def.h:680
Constants and routines for volume handling.