5 This file is part of PulseAudio.
7 Copyright 2004-2006 Lennart Poettering
9 PulseAudio is free software; you can redistribute it and/or modify
10 it under the terms of the GNU Lesser General Public License as published
11 by the Free Software Foundation; either version 2.1 of the License,
12 or (at your option) any later version.
14 PulseAudio is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
23 #include <pulsecore/typedefs.h>
24 #include <pulse/mainloop-api.h>
25 #include <pulse/sample.h>
26 #include <pulsecore/cpu.h>
28 /* This is a bitmask that encodes the cause why a sink/source is
31 * When adding new causes, remember to update pa_suspend_cause_to_string() and
32 * PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE! */
33 typedef enum pa_suspend_cause {
34 PA_SUSPEND_USER = 1, /* Exposed to the user via some protocol */
35 PA_SUSPEND_APPLICATION = 2, /* Used by the device reservation logic */
36 PA_SUSPEND_IDLE = 4, /* Used by module-suspend-on-idle */
37 PA_SUSPEND_SESSION = 8, /* Used by module-hal for mark inactive sessions */
38 PA_SUSPEND_PASSTHROUGH = 16, /* Used to suspend monitor sources when the sink is in passthrough mode */
39 PA_SUSPEND_INTERNAL = 32, /* This is used for short period server-internal suspends, such as for sample rate updates */
40 PA_SUSPEND_UNAVAILABLE = 64, /* Used by device implementations that have to suspend when the device is unavailable */
41 PA_SUSPEND_ALL = 0xFFFF /* Magic cause that can be used to resume forcibly */
44 #include <pulsecore/idxset.h>
45 #include <pulsecore/hashmap.h>
46 #include <pulsecore/memblock.h>
47 #include <pulsecore/resampler.h>
48 #include <pulsecore/llist.h>
49 #include <pulsecore/hook-list.h>
50 #include <pulsecore/asyncmsgq.h>
51 #include <pulsecore/sample-util.h>
52 #include <pulsecore/sink.h>
53 #include <pulsecore/source.h>
54 #include <pulsecore/core-subscribe.h>
55 #include <pulsecore/msgobject.h>
57 typedef enum pa_server_type {
60 PA_SERVER_TYPE_SYSTEM,
64 typedef enum pa_core_state {
70 typedef enum pa_core_hook {
71 PA_CORE_HOOK_SINK_NEW,
72 PA_CORE_HOOK_SINK_FIXATE,
73 PA_CORE_HOOK_SINK_PUT,
74 PA_CORE_HOOK_SINK_UNLINK,
75 PA_CORE_HOOK_SINK_UNLINK_POST,
76 PA_CORE_HOOK_SINK_STATE_CHANGED,
77 PA_CORE_HOOK_SINK_PROPLIST_CHANGED,
78 PA_CORE_HOOK_SINK_PORT_CHANGED,
79 PA_CORE_HOOK_SINK_FLAGS_CHANGED,
80 PA_CORE_HOOK_SINK_VOLUME_CHANGED,
81 PA_CORE_HOOK_SINK_MUTE_CHANGED,
82 PA_CORE_HOOK_SINK_PORT_LATENCY_OFFSET_CHANGED,
83 PA_CORE_HOOK_SOURCE_NEW,
84 PA_CORE_HOOK_SOURCE_FIXATE,
85 PA_CORE_HOOK_SOURCE_PUT,
86 PA_CORE_HOOK_SOURCE_UNLINK,
87 PA_CORE_HOOK_SOURCE_UNLINK_POST,
88 PA_CORE_HOOK_SOURCE_STATE_CHANGED,
89 PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED,
90 PA_CORE_HOOK_SOURCE_PORT_CHANGED,
91 PA_CORE_HOOK_SOURCE_FLAGS_CHANGED,
92 PA_CORE_HOOK_SOURCE_VOLUME_CHANGED,
93 PA_CORE_HOOK_SOURCE_MUTE_CHANGED,
94 PA_CORE_HOOK_SOURCE_PORT_LATENCY_OFFSET_CHANGED,
95 PA_CORE_HOOK_SINK_INPUT_NEW,
96 PA_CORE_HOOK_SINK_INPUT_FIXATE,
97 PA_CORE_HOOK_SINK_INPUT_PUT,
98 PA_CORE_HOOK_SINK_INPUT_UNLINK,
99 PA_CORE_HOOK_SINK_INPUT_UNLINK_POST,
100 PA_CORE_HOOK_SINK_INPUT_MOVE_START,
101 PA_CORE_HOOK_SINK_INPUT_MOVE_FINISH,
102 PA_CORE_HOOK_SINK_INPUT_MOVE_FAIL,
103 PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED,
104 PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED,
105 PA_CORE_HOOK_SINK_INPUT_VOLUME_CHANGED,
106 PA_CORE_HOOK_SINK_INPUT_MUTE_CHANGED,
107 PA_CORE_HOOK_SINK_INPUT_PREFERRED_SINK_CHANGED,
108 PA_CORE_HOOK_SINK_INPUT_SEND_EVENT,
109 PA_CORE_HOOK_SOURCE_OUTPUT_NEW,
110 PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE,
111 PA_CORE_HOOK_SOURCE_OUTPUT_PUT,
112 PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK,
113 PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST,
114 PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START,
115 PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH,
116 PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL,
117 PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED,
118 PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED,
119 PA_CORE_HOOK_SOURCE_OUTPUT_VOLUME_CHANGED,
120 PA_CORE_HOOK_SOURCE_OUTPUT_MUTE_CHANGED,
121 PA_CORE_HOOK_SOURCE_OUTPUT_PREFERRED_SOURCE_CHANGED,
122 PA_CORE_HOOK_SOURCE_OUTPUT_SEND_EVENT,
123 PA_CORE_HOOK_CLIENT_NEW,
124 PA_CORE_HOOK_CLIENT_PUT,
125 PA_CORE_HOOK_CLIENT_UNLINK,
126 PA_CORE_HOOK_CLIENT_PROPLIST_CHANGED,
127 PA_CORE_HOOK_CLIENT_SEND_EVENT,
128 PA_CORE_HOOK_CARD_NEW,
129 PA_CORE_HOOK_CARD_CHOOSE_INITIAL_PROFILE,
130 PA_CORE_HOOK_CARD_PUT,
131 PA_CORE_HOOK_CARD_UNLINK,
132 PA_CORE_HOOK_CARD_PREFERRED_PORT_CHANGED,
133 PA_CORE_HOOK_CARD_PROFILE_CHANGED,
134 PA_CORE_HOOK_CARD_PROFILE_ADDED,
135 PA_CORE_HOOK_CARD_PROFILE_AVAILABLE_CHANGED,
136 PA_CORE_HOOK_CARD_SUSPEND_CHANGED,
137 PA_CORE_HOOK_PORT_AVAILABLE_CHANGED,
138 PA_CORE_HOOK_PORT_LATENCY_OFFSET_CHANGED,
139 PA_CORE_HOOK_DEFAULT_SINK_CHANGED,
140 PA_CORE_HOOK_DEFAULT_SOURCE_CHANGED,
141 PA_CORE_HOOK_MODULE_NEW,
142 PA_CORE_HOOK_MODULE_PROPLIST_CHANGED,
143 PA_CORE_HOOK_MODULE_UNLINK,
144 PA_CORE_HOOK_SAMPLE_CACHE_NEW,
145 PA_CORE_HOOK_SAMPLE_CACHE_CHANGED,
146 PA_CORE_HOOK_SAMPLE_CACHE_UNLINK,
148 PA_CORE_HOOK_SINK_INPUT_RAMP_FINISH,
154 #define PA_PCM_DUMP_PATH_PREFIX "/tmp/pcm"
157 PA_PCM_DUMP_SINK_INPUT = 0x00002000U,
158 PA_PCM_DUMP_SINK = 0x00004000U,
159 PA_PCM_DUMP_SOURCE = 0x00020000U,
160 PA_PCM_DUMP_SOURCE_OUTPUT = 0x00040000U,
161 PA_PCM_DUMP_SEPARATED = 0x10000000U,
162 PA_PCM_DUMP_MONITOR = 0x20000000U,
166 /* The core structure of PulseAudio. Every PulseAudio daemon contains
167 * exactly one of these. It is used for storing kind of global
168 * variables for the daemon. */
173 pa_core_state_t state;
175 /* A random value which may be used to identify this instance of
176 * PulseAudio. Not cryptographically secure in any way. */
179 pa_mainloop_api *mainloop;
181 /* idxset of all kinds of entities */
182 pa_idxset *clients, *cards, *sinks, *sources, *sink_inputs, *source_outputs, *modules, *scache;
184 /* Some hashmaps for all sorts of entities */
185 pa_hashmap *namereg, *shared, *message_handlers;
187 /* The default sink/source as configured by the user. If the user hasn't
188 * explicitly configured anything, these are set to NULL. These are strings
189 * instead of sink/source pointers, because that allows us to reference
190 * devices that don't currently exist. That's useful for remembering that
191 * a hotplugged USB sink was previously set as the default sink. */
192 char *configured_default_sink;
193 char *configured_default_source;
195 /* The effective default sink/source. If no sink or source is explicitly
196 * configured as the default, we pick the device that ranks highest
197 * according to the compare_sinks() and compare_sources() functions in
198 * core.c. pa_core_update_default_sink/source() has to be called whenever
199 * anything changes that might change the comparison results. */
200 pa_sink *default_sink;
201 pa_source *default_source;
203 pa_channel_map default_channel_map;
204 pa_sample_spec default_sample_spec;
205 uint32_t alternate_sample_rate;
206 unsigned default_n_fragments, default_fragment_size_msec;
207 unsigned deferred_volume_safety_margin_usec;
208 int deferred_volume_extra_delay_usec;
209 unsigned lfe_crossover_freq;
211 pa_defer_event *module_defer_unload_event;
212 pa_hashmap *modules_pending_unload; /* pa_module -> pa_module (hashmap-as-a-set) */
214 pa_defer_event *subscription_defer_event;
215 PA_LLIST_HEAD(pa_subscription, subscriptions);
216 PA_LLIST_HEAD(pa_subscription_event, subscription_event_queue);
217 pa_subscription_event *subscription_event_last;
219 /* The mempool is used for data we write to, it's readonly for the client. */
222 /* Shared memory size, as specified either by daemon configuration
223 * or PA daemon defaults (~ 64 MiB). */
226 pa_silence_cache silence_cache;
228 pa_time_event *exit_event;
229 pa_time_event *scache_auto_unload_event;
231 int exit_idle_time, scache_idle_time;
234 bool rescue_streams:1;
235 bool disallow_module_loading:1;
236 bool disallow_exit:1;
237 bool running_as_daemon:1;
238 bool realtime_scheduling:1;
239 bool avoid_resampling:1;
240 bool disable_remixing:1;
241 bool remixing_use_all_sink_channels:1;
242 bool remixing_produce_lfe:1;
243 bool remixing_consume_lfe:1;
244 bool deferred_volume:1;
246 pa_resample_method_t resample_method;
247 int realtime_priority;
249 pa_server_type_t server_type;
250 pa_cpu_info cpu_info;
253 pa_hook hooks[PA_CORE_HOOK_MAX];
256 unsigned empty_pop_threshold;
260 PA_DECLARE_PUBLIC_CLASS(pa_core);
261 #define PA_CORE(o) pa_core_cast(o)
264 PA_CORE_MESSAGE_UNLOAD_MODULE,
268 pa_core* pa_core_new(pa_mainloop_api *m, bool shared, bool enable_memfd, size_t shm_size);
270 void pa_core_set_configured_default_sink(pa_core *core, const char *sink);
271 void pa_core_set_configured_default_source(pa_core *core, const char *source);
273 /* These should be called whenever something changes that may affect the
274 * default sink or source choice.
276 * If the default source choice happens between two monitor sources, the
277 * monitored sinks are compared, so if the default sink changes, the default
278 * source may change too. However, pa_core_update_default_sink() calls
279 * pa_core_update_default_source() internally, so it's sufficient to only call
280 * pa_core_update_default_sink() when something happens that affects the sink
282 void pa_core_update_default_sink(pa_core *core);
283 void pa_core_update_default_source(pa_core *core);
285 void pa_core_set_exit_idle_time(pa_core *core, int time);
287 /* Check whether no one is connected to this core */
288 void pa_core_check_idle(pa_core *c);
290 int pa_core_exit(pa_core *c, bool force, int retval);
292 void pa_core_maybe_vacuum(pa_core *c);
294 /* wrapper for c->mainloop->time_*() RT time events */
295 pa_time_event* pa_core_rttime_new(pa_core *c, pa_usec_t usec, pa_time_event_cb_t cb, void *userdata);
296 void pa_core_rttime_restart(pa_core *c, pa_time_event *e, pa_usec_t usec);
298 static const size_t PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE =
299 sizeof("USER|APPLICATION|IDLE|SESSION|PASSTHROUGH|INTERNAL|UNAVAILABLE");
301 /* Converts the given suspend cause to a string. The string is written to the
302 * provided buffer. The same buffer is the return value of this function. */
303 const char *pa_suspend_cause_to_string(pa_suspend_cause_t cause, char buf[PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE]);
305 void pa_core_move_streams_to_newly_available_preferred_sink(pa_core *c, pa_sink *s);
307 void pa_core_move_streams_to_newly_available_preferred_source(pa_core *c, pa_source *s);
310 void pa_core_dump_sink_inputs(pa_core *core);
311 void pa_core_dump_source_outputs(pa_core *core);