1 #ifndef foopulsesinkhfoo
2 #define foopulsesinkhfoo
5 This file is part of PulseAudio.
7 Copyright 2004-2006 Lennart Poettering
8 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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 of the License,
13 or (at your option) any later version.
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.
20 You should have received a copy of the GNU Lesser General Public License
21 along with PulseAudio; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 typedef struct pa_sink pa_sink;
30 #include <pulse/sample.h>
31 #include <pulse/channelmap.h>
32 #include <pulse/volume.h>
34 #include <pulsecore/core.h>
35 #include <pulsecore/idxset.h>
36 #include <pulsecore/source.h>
37 #include <pulsecore/module.h>
38 #include <pulsecore/refcnt.h>
39 #include <pulsecore/msgobject.h>
40 #include <pulsecore/rtpoll.h>
42 #define PA_MAX_INPUTS_PER_SINK 32
44 typedef enum pa_sink_state {
52 static inline pa_bool_t PA_SINK_IS_OPENED(pa_sink_state_t x) {
53 return x == PA_SINK_RUNNING || x == PA_SINK_IDLE;
56 static inline pa_bool_t PA_SINK_IS_LINKED(pa_sink_state_t x) {
57 return x == PA_SINK_RUNNING || x == PA_SINK_IDLE || x == PA_SINK_SUSPENDED;
65 pa_sink_state_t state;
66 pa_sink_flags_t flags;
69 char *driver; /* may be NULL */
70 pa_proplist *proplist;
72 pa_module *module; /* may be NULL */
74 pa_sample_spec sample_spec;
75 pa_channel_map channel_map;
79 pa_source *monitor_source;
84 pa_volume_t base_volume; /* shall be constant */
86 pa_bool_t refresh_volume:1;
87 pa_bool_t refresh_muted:1;
89 pa_asyncmsgq *asyncmsgq;
94 /* Called when the main loop requests a state change. Called from
95 * main loop context. If returns -1 the state change will be
97 int (*set_state)(pa_sink *s, pa_sink_state_t state); /* may be NULL */
99 /* Callled when the volume is queried. Called from main loop
100 * context. If this is NULL a PA_SINK_MESSAGE_GET_VOLUME message
101 * will be sent to the IO thread instead. If refresh_volume is
102 * FALSE neither this function is called nor a message is sent. */
103 int (*get_volume)(pa_sink *s); /* may be NULL */
105 /* Called when the volume shall be changed. Called from main loop
106 * context. If this is NULL a PA_SINK_MESSAGE_SET_VOLUME message
107 * will be sent to the IO thread instead. */
108 int (*set_volume)(pa_sink *s); /* dito */
110 /* Called when the mute setting is queried. Called from main loop
111 * context. If this is NULL a PA_SINK_MESSAGE_GET_MUTE message
112 * will be sent to the IO thread instead. If refresh_mute is
113 * FALSE neither this function is called nor a message is sent.*/
114 int (*get_mute)(pa_sink *s); /* dito */
116 /* Called when the mute setting shall be changed. Called from main
117 * loop context. If this is NULL a PA_SINK_MESSAGE_SET_MUTE
118 * message will be sent to the IO thread instead. */
119 int (*set_mute)(pa_sink *s); /* dito */
121 /* Called when a rewind request is issued. Called from IO thread
123 void (*request_rewind)(pa_sink *s); /* dito */
125 /* Called when a the requested latency is changed. Called from IO
127 void (*update_requested_latency)(pa_sink *s); /* dito */
129 /* Contains copies of the above data so that the real-time worker
130 * thread can work without access locking */
132 pa_sink_state_t state;
134 pa_cvolume soft_volume;
135 pa_bool_t soft_muted:1;
137 pa_bool_t requested_latency_valid:1;
138 pa_usec_t requested_latency;
140 /* The number of bytes streams need to keep around as history to
141 * be able to satisfy every DMA buffer rewrite */
144 /* The number of bytes streams need to keep around to satisfy
145 * every DMA write request */
148 /* Maximum of what clients requested to rewind in this cycle */
149 size_t rewind_nbytes;
150 pa_bool_t rewind_requested;
152 pa_usec_t min_latency; /* we won't go below this latency */
153 pa_usec_t max_latency; /* An upper limit for the latencies */
159 PA_DECLARE_CLASS(pa_sink);
160 #define PA_SINK(s) (pa_sink_cast(s))
162 typedef enum pa_sink_message {
163 PA_SINK_MESSAGE_ADD_INPUT,
164 PA_SINK_MESSAGE_REMOVE_INPUT,
165 PA_SINK_MESSAGE_GET_VOLUME,
166 PA_SINK_MESSAGE_SET_VOLUME,
167 PA_SINK_MESSAGE_GET_MUTE,
168 PA_SINK_MESSAGE_SET_MUTE,
169 PA_SINK_MESSAGE_GET_LATENCY,
170 PA_SINK_MESSAGE_GET_REQUESTED_LATENCY,
171 PA_SINK_MESSAGE_SET_STATE,
172 PA_SINK_MESSAGE_START_MOVE,
173 PA_SINK_MESSAGE_FINISH_MOVE,
174 PA_SINK_MESSAGE_ATTACH,
175 PA_SINK_MESSAGE_DETACH,
176 PA_SINK_MESSAGE_SET_LATENCY_RANGE,
177 PA_SINK_MESSAGE_GET_LATENCY_RANGE,
178 PA_SINK_MESSAGE_GET_MAX_REWIND,
179 PA_SINK_MESSAGE_GET_MAX_REQUEST,
183 typedef struct pa_sink_new_data {
185 pa_proplist *proplist;
190 pa_sample_spec sample_spec;
191 pa_channel_map channel_map;
195 pa_bool_t sample_spec_is_set:1;
196 pa_bool_t channel_map_is_set:1;
197 pa_bool_t volume_is_set:1;
198 pa_bool_t muted_is_set:1;
200 pa_bool_t namereg_fail:1;
203 pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data);
204 void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name);
205 void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec);
206 void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map);
207 void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume);
208 void pa_sink_new_data_set_muted(pa_sink_new_data *data, pa_bool_t mute);
209 void pa_sink_new_data_done(pa_sink_new_data *data);
211 typedef struct pa_sink_set_volume_data {
214 } pa_sink_set_volume_data;
216 /* To be called exclusively by the sink driver, from main context */
218 pa_sink* pa_sink_new(
220 pa_sink_new_data *data,
221 pa_sink_flags_t flags);
223 void pa_sink_put(pa_sink *s);
224 void pa_sink_unlink(pa_sink* s);
226 void pa_sink_set_description(pa_sink *s, const char *description);
227 void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q);
228 void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p);
230 void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
232 void pa_sink_detach(pa_sink *s);
233 void pa_sink_attach(pa_sink *s);
235 /* May be called by everyone, from main context */
237 /* The returned value is supposed to be in the time domain of the sound card! */
238 pa_usec_t pa_sink_get_latency(pa_sink *s);
239 pa_usec_t pa_sink_get_requested_latency(pa_sink *s);
240 void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
242 size_t pa_sink_get_max_rewind(pa_sink *s);
243 size_t pa_sink_get_max_request(pa_sink *s);
245 int pa_sink_update_status(pa_sink*s);
246 int pa_sink_suspend(pa_sink *s, pa_bool_t suspend);
247 int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend);
249 void pa_sink_set_volume(pa_sink *sink, const pa_cvolume *volume);
250 void pa_sink_set_soft_volume(pa_sink *s, const pa_cvolume *volume);
251 const pa_cvolume *pa_sink_get_volume(pa_sink *sink, pa_bool_t force_refresh);
252 void pa_sink_set_mute(pa_sink *sink, pa_bool_t mute);
253 pa_bool_t pa_sink_get_mute(pa_sink *sink, pa_bool_t force_refres);
255 unsigned pa_sink_linked_by(pa_sink *s); /* Number of connected streams */
256 unsigned pa_sink_used_by(pa_sink *s); /* Number of connected streams which are not corked */
257 unsigned pa_sink_check_suspend(pa_sink *s); /* Returns how many streams are active that don't allow suspensions */
258 #define pa_sink_get_state(s) ((s)->state)
260 /* To be called exclusively by the sink driver, from IO context */
262 void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result);
263 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result);
264 void pa_sink_render_into(pa_sink*s, pa_memchunk *target);
265 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target);
267 void pa_sink_process_rewind(pa_sink *s, size_t nbytes);
269 int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
271 void pa_sink_attach_within_thread(pa_sink *s);
272 void pa_sink_detach_within_thread(pa_sink *s);
274 pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s);
276 void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind);
277 void pa_sink_set_max_request(pa_sink *s, size_t max_request);
279 void pa_sink_update_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency);
281 /* To be called exclusively by sink input drivers, from IO context */
283 void pa_sink_request_rewind(pa_sink*s, size_t nbytes);
285 void pa_sink_invalidate_requested_latency(pa_sink *s);