1 #ifndef foopulsesourcehfoo
2 #define foopulsesourcehfoo
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_source pa_source;
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/memblock.h>
37 #include <pulsecore/memchunk.h>
38 #include <pulsecore/sink.h>
39 #include <pulsecore/module.h>
40 #include <pulsecore/asyncmsgq.h>
41 #include <pulsecore/msgobject.h>
42 #include <pulsecore/rtpoll.h>
43 #include <pulsecore/source-output.h>
44 #include <pulsecore/card.h>
46 #define PA_MAX_OUTPUTS_PER_SOURCE 32
48 /* anonymous enum extending pa_source_state_t */
51 /* Initialization state */
53 PA_SOURCE_UNLINKED = -3
54 /* The state when the source is getting unregistered and removed from client access */
57 /* Returns true if source is linked: registered and accessible from client side. */
58 static inline pa_bool_t PA_SOURCE_IS_LINKED(pa_source_state_t x) {
59 return x == PA_SOURCE_RUNNING || x == PA_SOURCE_IDLE || x == PA_SOURCE_SUSPENDED;
67 pa_source_state_t state;
68 pa_source_flags_t flags;
71 char *driver; /* may be NULL */
72 pa_proplist *proplist;
74 pa_module *module; /* may be NULL */
75 pa_card *card; /* may be NULL */
77 pa_sample_spec sample_spec;
78 pa_channel_map channel_map;
82 pa_sink *monitor_of; /* may be NULL */
87 pa_volume_t base_volume; /* shall be constant */
89 pa_bool_t refresh_volume:1;
90 pa_bool_t refresh_muted:1;
92 pa_asyncmsgq *asyncmsgq;
97 /* Called when the main loop requests a state change. Called from
98 * main loop context. If returns -1 the state change will be
100 int (*set_state)(pa_source*source, pa_source_state_t state); /* may be NULL */
102 /* Callled when the volume is queried. Called from main loop
103 * context. If this is NULL a PA_SOURCE_MESSAGE_GET_VOLUME message
104 * will be sent to the IO thread instead. If refresh_volume is
105 * FALSE neither this function is called nor a message is sent. */
106 int (*get_volume)(pa_source *s); /* dito */
108 /* Called when the volume shall be changed. Called from main loop
109 * context. If this is NULL a PA_SOURCE_MESSAGE_SET_VOLUME message
110 * will be sent to the IO thread instead. */
111 int (*set_volume)(pa_source *s); /* dito */
113 /* Called when the mute setting is queried. Called from main loop
114 * context. If this is NULL a PA_SOURCE_MESSAGE_GET_MUTE message
115 * will be sent to the IO thread instead. If refresh_mute is
116 * FALSE neither this function is called nor a message is sent.*/
117 int (*get_mute)(pa_source *s); /* dito */
119 /* Called when the mute setting shall be changed. Called from main
120 * loop context. If this is NULL a PA_SOURCE_MESSAGE_SET_MUTE
121 * message will be sent to the IO thread instead. */
122 int (*set_mute)(pa_source *s); /* dito */
124 /* Called when a the requested latency is changed. Called from IO
126 void (*update_requested_latency)(pa_source *s); /* dito */
128 /* Contains copies of the above data so that the real-time worker
129 * thread can work without access locking */
131 pa_source_state_t state;
133 pa_cvolume soft_volume;
134 pa_bool_t soft_muted:1;
136 pa_bool_t requested_latency_valid:1;
137 pa_usec_t requested_latency;
139 /* Then number of bytes this source will be rewound for at
140 * max. (Only used on monitor sources) */
143 pa_usec_t min_latency; /* we won't go below this latency */
144 pa_usec_t max_latency; /* An upper limit for the latencies */
150 PA_DECLARE_CLASS(pa_source);
151 #define PA_SOURCE(s) pa_source_cast(s)
153 typedef enum pa_source_message {
154 PA_SOURCE_MESSAGE_ADD_OUTPUT,
155 PA_SOURCE_MESSAGE_REMOVE_OUTPUT,
156 PA_SOURCE_MESSAGE_GET_VOLUME,
157 PA_SOURCE_MESSAGE_SET_VOLUME,
158 PA_SOURCE_MESSAGE_GET_MUTE,
159 PA_SOURCE_MESSAGE_SET_MUTE,
160 PA_SOURCE_MESSAGE_GET_LATENCY,
161 PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY,
162 PA_SOURCE_MESSAGE_SET_STATE,
163 PA_SOURCE_MESSAGE_ATTACH,
164 PA_SOURCE_MESSAGE_DETACH,
165 PA_SOURCE_MESSAGE_SET_LATENCY_RANGE,
166 PA_SOURCE_MESSAGE_GET_LATENCY_RANGE,
167 PA_SOURCE_MESSAGE_GET_MAX_REWIND,
168 PA_SOURCE_MESSAGE_MAX
169 } pa_source_message_t;
171 typedef struct pa_source_new_data {
173 pa_proplist *proplist;
179 pa_sample_spec sample_spec;
180 pa_channel_map channel_map;
184 pa_bool_t volume_is_set:1;
185 pa_bool_t muted_is_set:1;
186 pa_bool_t sample_spec_is_set:1;
187 pa_bool_t channel_map_is_set:1;
189 pa_bool_t namereg_fail:1;
190 } pa_source_new_data;
192 pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data);
193 void pa_source_new_data_set_name(pa_source_new_data *data, const char *name);
194 void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec);
195 void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map);
196 void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume);
197 void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute);
198 void pa_source_new_data_done(pa_source_new_data *data);
200 /* To be called exclusively by the source driver, from main context */
202 pa_source* pa_source_new(
204 pa_source_new_data *data,
205 pa_source_flags_t flags);
207 void pa_source_put(pa_source *s);
208 void pa_source_unlink(pa_source *s);
210 void pa_source_set_description(pa_source *s, const char *description);
211 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q);
212 void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p);
214 void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency);
216 void pa_source_detach(pa_source *s);
217 void pa_source_attach(pa_source *s);
219 /* May be called by everyone, from main context */
221 /* The returned value is supposed to be in the time domain of the sound card! */
222 pa_usec_t pa_source_get_latency(pa_source *s);
223 pa_usec_t pa_source_get_requested_latency(pa_source *s);
224 void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency);
226 size_t pa_source_get_max_rewind(pa_source *s);
228 int pa_source_update_status(pa_source*s);
229 int pa_source_suspend(pa_source *s, pa_bool_t suspend);
230 int pa_source_suspend_all(pa_core *c, pa_bool_t suspend);
232 void pa_source_set_volume(pa_source *source, const pa_cvolume *volume);
233 void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume);
234 const pa_cvolume *pa_source_get_volume(pa_source *source, pa_bool_t force_refresh);
235 void pa_source_set_mute(pa_source *source, pa_bool_t mute);
236 pa_bool_t pa_source_get_mute(pa_source *source, pa_bool_t force_refresh);
238 pa_bool_t pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p);
240 unsigned pa_source_linked_by(pa_source *s); /* Number of connected streams */
241 unsigned pa_source_used_by(pa_source *s); /* Number of connected streams that are not corked */
242 unsigned pa_source_check_suspend(pa_source *s); /* Returns how many streams are active that don't allow suspensions */
243 #define pa_source_get_state(s) ((pa_source_state_t) (s)->state)
245 /* To be called exclusively by the source driver, from IO context */
247 void pa_source_post(pa_source*s, const pa_memchunk *chunk);
248 void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk);
249 void pa_source_process_rewind(pa_source *s, size_t nbytes);
251 int pa_source_process_msg(pa_msgobject *o, int code, void *userdata, int64_t, pa_memchunk *chunk);
253 void pa_source_attach_within_thread(pa_source *s);
254 void pa_source_detach_within_thread(pa_source *s);
256 pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s);
258 void pa_source_set_max_rewind(pa_source *s, size_t max_rewind);
259 void pa_source_update_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency);
261 /* To be called exclusively by source output drivers, from IO context */
263 void pa_source_invalidate_requested_latency(pa_source *s);