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#ifndef foopulsesinkhfoo
#define foopulsesinkhfoo
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
typedef struct pa_sink pa_sink;
#include <inttypes.h>
#include <pulse/def.h>
#include <pulse/sample.h>
#include <pulse/channelmap.h>
#include <pulse/volume.h>
#include <pulsecore/core.h>
#include <pulsecore/idxset.h>
#include <pulsecore/source.h>
#include <pulsecore/module.h>
#include <pulsecore/refcnt.h>
#include <pulsecore/msgobject.h>
#include <pulsecore/rtpoll.h>
#include <pulsecore/card.h>
#include <pulsecore/queue.h>
#define PA_MAX_INPUTS_PER_SINK 32
/* Returns true if sink is linked: registered and accessible from client side. */
static inline pa_bool_t PA_SINK_IS_LINKED(pa_sink_state_t x) {
return x == PA_SINK_RUNNING || x == PA_SINK_IDLE || x == PA_SINK_SUSPENDED;
}
struct pa_sink {
pa_msgobject parent;
uint32_t index;
pa_core *core;
pa_sink_state_t state;
pa_sink_flags_t flags;
char *name;
char *driver; /* may be NULL */
pa_proplist *proplist;
pa_module *module; /* may be NULL */
pa_card *card; /* may be NULL */
pa_sample_spec sample_spec;
pa_channel_map channel_map;
pa_idxset *inputs;
unsigned n_corked;
pa_source *monitor_source;
pa_volume_t base_volume; /* shall be constant */
unsigned n_volume_steps; /* shall be constant */
pa_cvolume virtual_volume; /* The volume clients are informed about */
pa_cvolume soft_volume; /* The internal software volume we apply to all PCM data while it passes through */
pa_bool_t muted:1;
pa_bool_t refresh_volume:1;
pa_bool_t refresh_muted:1;
pa_asyncmsgq *asyncmsgq;
pa_rtpoll *rtpoll;
pa_memchunk silence;
pa_usec_t fixed_latency; /* for sinks with PA_SINK_DYNAMIC_LATENCY this is 0 */
/* Called when the main loop requests a state change. Called from
* main loop context. If returns -1 the state change will be
* inhibited */
int (*set_state)(pa_sink *s, pa_sink_state_t state); /* may be NULL */
/* Callled when the volume is queried. Called from main loop
* context. If this is NULL a PA_SINK_MESSAGE_GET_VOLUME message
* will be sent to the IO thread instead. If refresh_volume is
* FALSE neither this function is called nor a message is sent. */
void (*get_volume)(pa_sink *s); /* may be NULL */
/* Called when the volume shall be changed. Called from main loop
* context. If this is NULL a PA_SINK_MESSAGE_SET_VOLUME message
* will be sent to the IO thread instead. */
void (*set_volume)(pa_sink *s); /* dito */
/* Called when the mute setting is queried. Called from main loop
* context. If this is NULL a PA_SINK_MESSAGE_GET_MUTE message
* will be sent to the IO thread instead. If refresh_mute is
* FALSE neither this function is called nor a message is sent.*/
void (*get_mute)(pa_sink *s); /* dito */
/* Called when the mute setting shall be changed. Called from main
* loop context. If this is NULL a PA_SINK_MESSAGE_SET_MUTE
* message will be sent to the IO thread instead. */
void (*set_mute)(pa_sink *s); /* dito */
/* Called when a rewind request is issued. Called from IO thread
* context. */
void (*request_rewind)(pa_sink *s); /* dito */
/* Called when a the requested latency is changed. Called from IO
* thread context. */
void (*update_requested_latency)(pa_sink *s); /* dito */
/* Contains copies of the above data so that the real-time worker
* thread can work without access locking */
struct {
pa_sink_state_t state;
pa_hashmap *inputs;
pa_cvolume soft_volume;
pa_bool_t soft_muted:1;
pa_bool_t requested_latency_valid:1;
pa_usec_t requested_latency;
/* The number of bytes streams need to keep around as history to
* be able to satisfy every DMA buffer rewrite */
size_t max_rewind;
/* The number of bytes streams need to keep around to satisfy
* every DMA write request */
size_t max_request;
/* Maximum of what clients requested to rewind in this cycle */
size_t rewind_nbytes;
pa_bool_t rewind_requested;
pa_usec_t min_latency; /* we won't go below this latency */
pa_usec_t max_latency; /* An upper limit for the latencies */
} thread_info;
void *userdata;
};
PA_DECLARE_CLASS(pa_sink);
#define PA_SINK(s) (pa_sink_cast(s))
typedef enum pa_sink_message {
PA_SINK_MESSAGE_ADD_INPUT,
PA_SINK_MESSAGE_REMOVE_INPUT,
PA_SINK_MESSAGE_GET_VOLUME,
PA_SINK_MESSAGE_SET_VOLUME,
PA_SINK_MESSAGE_SYNC_VOLUMES,
PA_SINK_MESSAGE_GET_MUTE,
PA_SINK_MESSAGE_SET_MUTE,
PA_SINK_MESSAGE_GET_LATENCY,
PA_SINK_MESSAGE_GET_REQUESTED_LATENCY,
PA_SINK_MESSAGE_SET_STATE,
PA_SINK_MESSAGE_START_MOVE,
PA_SINK_MESSAGE_FINISH_MOVE,
PA_SINK_MESSAGE_ATTACH,
PA_SINK_MESSAGE_DETACH,
PA_SINK_MESSAGE_SET_LATENCY_RANGE,
PA_SINK_MESSAGE_GET_LATENCY_RANGE,
PA_SINK_MESSAGE_GET_MAX_REWIND,
PA_SINK_MESSAGE_GET_MAX_REQUEST,
PA_SINK_MESSAGE_SET_MAX_REWIND,
PA_SINK_MESSAGE_SET_MAX_REQUEST,
PA_SINK_MESSAGE_MAX
} pa_sink_message_t;
typedef struct pa_sink_new_data {
char *name;
pa_proplist *proplist;
const char *driver;
pa_module *module;
pa_card *card;
pa_sample_spec sample_spec;
pa_channel_map channel_map;
pa_cvolume volume;
pa_bool_t muted :1;
pa_bool_t sample_spec_is_set:1;
pa_bool_t channel_map_is_set:1;
pa_bool_t volume_is_set:1;
pa_bool_t muted_is_set:1;
pa_bool_t namereg_fail:1;
} pa_sink_new_data;
pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
void pa_sink_new_data_set_muted(pa_sink_new_data *data, pa_bool_t mute);
void pa_sink_new_data_done(pa_sink_new_data *data);
/*** To be called exclusively by the sink driver, from main context */
pa_sink* pa_sink_new(
pa_core *core,
pa_sink_new_data *data,
pa_sink_flags_t flags);
void pa_sink_put(pa_sink *s);
void pa_sink_unlink(pa_sink* s);
void pa_sink_set_description(pa_sink *s, const char *description);
void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q);
void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p);
void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind);
void pa_sink_set_max_request(pa_sink *s, size_t max_request);
void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
void pa_sink_detach(pa_sink *s);
void pa_sink_attach(pa_sink *s);
void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume);
void pa_sink_volume_changed(pa_sink *s, const pa_cvolume *new_volume);
void pa_sink_mute_changed(pa_sink *s, pa_bool_t new_muted);
pa_bool_t pa_device_init_description(pa_proplist *p);
pa_bool_t pa_device_init_icon(pa_proplist *p, pa_bool_t is_sink);
/**** May be called by everyone, from main context */
/* The returned value is supposed to be in the time domain of the sound card! */
pa_usec_t pa_sink_get_latency(pa_sink *s);
pa_usec_t pa_sink_get_requested_latency(pa_sink *s);
void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
size_t pa_sink_get_max_rewind(pa_sink *s);
size_t pa_sink_get_max_request(pa_sink *s);
int pa_sink_update_status(pa_sink*s);
int pa_sink_suspend(pa_sink *s, pa_bool_t suspend);
int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend);
void pa_sink_update_flat_volume(pa_sink *s, pa_cvolume *new_volume);
void pa_sink_propagate_flat_volume(pa_sink *s);
void pa_sink_set_volume(pa_sink *sink, const pa_cvolume *volume, pa_bool_t propagate, pa_bool_t sendmsg);
const pa_cvolume *pa_sink_get_volume(pa_sink *sink, pa_bool_t force_refresh);
void pa_sink_set_mute(pa_sink *sink, pa_bool_t mute);
pa_bool_t pa_sink_get_mute(pa_sink *sink, pa_bool_t force_refresh);
pa_bool_t pa_sink_update_proplist(pa_sink *s, pa_update_mode_t mode, pa_proplist *p);
unsigned pa_sink_linked_by(pa_sink *s); /* Number of connected streams */
unsigned pa_sink_used_by(pa_sink *s); /* Number of connected streams which are not corked */
unsigned pa_sink_check_suspend(pa_sink *s); /* Returns how many streams are active that don't allow suspensions */
#define pa_sink_get_state(s) ((s)->state)
/* Moves all inputs away, and stores them in pa_queue */
pa_queue *pa_sink_move_all_start(pa_sink *s);
void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, pa_bool_t save);
void pa_sink_move_all_fail(pa_queue *q);
/*** To be called exclusively by the sink driver, from IO context */
void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result);
void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result);
void pa_sink_render_into(pa_sink*s, pa_memchunk *target);
void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target);
void pa_sink_process_rewind(pa_sink *s, size_t nbytes);
int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
void pa_sink_attach_within_thread(pa_sink *s);
void pa_sink_detach_within_thread(pa_sink *s);
pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s);
void pa_sink_set_max_rewind_within_thread(pa_sink *s, size_t max_rewind);
void pa_sink_set_max_request_within_thread(pa_sink *s, size_t max_request);
void pa_sink_set_latency_range_within_thread(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
/*** To be called exclusively by sink input drivers, from IO context */
void pa_sink_request_rewind(pa_sink*s, size_t nbytes);
void pa_sink_invalidate_requested_latency(pa_sink *s);
pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s);
#endif
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