1 #ifndef foocorehfoo 2 #define foocorehfoo 3 4 /*** 5 This file is part of PulseAudio. 6 7 Copyright 2004-2006 Lennart Poettering 8 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. 13 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. 18 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/>. 21 ***/ 22 23 #include <pulsecore/typedefs.h> 24 #include <pulse/mainloop-api.h> 25 #include <pulse/sample.h> 26 #include <pulsecore/cpu.h> 27 28 /* This is a bitmask that encodes the cause why a sink/source is 29 * suspended. 30 * 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 */ 42 } pa_suspend_cause_t; 43 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> 56 57 typedef enum pa_server_type { 58 PA_SERVER_TYPE_UNSET, 59 PA_SERVER_TYPE_USER, 60 PA_SERVER_TYPE_SYSTEM, 61 PA_SERVER_TYPE_NONE 62 } pa_server_type_t; 63 64 typedef enum pa_core_state { 65 PA_CORE_STARTUP, 66 PA_CORE_RUNNING, 67 PA_CORE_SHUTDOWN 68 } pa_core_state_t; 69 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, 147 PA_CORE_HOOK_MAX 148 } pa_core_hook_t; 149 150 /* The core structure of PulseAudio. Every PulseAudio daemon contains 151 * exactly one of these. It is used for storing kind of global 152 * variables for the daemon. */ 153 154 struct pa_core { 155 pa_msgobject parent; 156 157 pa_core_state_t state; 158 159 /* A random value which may be used to identify this instance of 160 * PulseAudio. Not cryptographically secure in any way. */ 161 uint32_t cookie; 162 163 pa_mainloop_api *mainloop; 164 165 /* idxset of all kinds of entities */ 166 pa_idxset *clients, *cards, *sinks, *sources, *sink_inputs, *source_outputs, *modules, *scache; 167 168 /* Some hashmaps for all sorts of entities */ 169 pa_hashmap *namereg, *shared, *message_handlers; 170 171 /* The default sink/source as configured by the user. If the user hasn't 172 * explicitly configured anything, these are set to NULL. These are strings 173 * instead of sink/source pointers, because that allows us to reference 174 * devices that don't currently exist. That's useful for remembering that 175 * a hotplugged USB sink was previously set as the default sink. */ 176 char *configured_default_sink; 177 char *configured_default_source; 178 179 /* The default sink/source set by some policy module. This will override 180 * the user configured default sink/source, so that the default will 181 * return to the user configured sink/source once the sink/source set by 182 * the policy module is no longer available. */ 183 char *policy_default_sink; 184 char *policy_default_source; 185 186 /* The effective default sink/source. If no sink or source is explicitly 187 * configured as the default, we pick the device that ranks highest 188 * according to the compare_sinks() and compare_sources() functions in 189 * core.c. pa_core_update_default_sink/source() has to be called whenever 190 * anything changes that might change the comparison results. */ 191 pa_sink *default_sink; 192 pa_source *default_source; 193 194 pa_channel_map default_channel_map; 195 pa_sample_spec default_sample_spec; 196 uint32_t alternate_sample_rate; 197 unsigned default_n_fragments, default_fragment_size_msec; 198 unsigned deferred_volume_safety_margin_usec; 199 int deferred_volume_extra_delay_usec; 200 unsigned lfe_crossover_freq; 201 202 pa_defer_event *module_defer_unload_event; 203 pa_hashmap *modules_pending_unload; /* pa_module -> pa_module (hashmap-as-a-set) */ 204 205 pa_defer_event *subscription_defer_event; 206 PA_LLIST_HEAD(pa_subscription, subscriptions); 207 PA_LLIST_HEAD(pa_subscription_event, subscription_event_queue); 208 pa_subscription_event *subscription_event_last; 209 210 /* The mempool is used for data we write to, it's readonly for the client. */ 211 pa_mempool *mempool; 212 213 /* Shared memory size, as specified either by daemon configuration 214 * or PA daemon defaults (~ 64 MiB). */ 215 size_t shm_size; 216 217 pa_silence_cache silence_cache; 218 219 pa_time_event *exit_event; 220 pa_time_event *scache_auto_unload_event; 221 222 int exit_idle_time, scache_idle_time; 223 224 bool flat_volumes:1; 225 bool rescue_streams:1; 226 bool disallow_module_loading:1; 227 bool disallow_exit:1; 228 bool running_as_daemon:1; 229 bool realtime_scheduling:1; 230 bool avoid_resampling:1; 231 bool disable_remixing:1; 232 bool remixing_use_all_sink_channels:1; 233 bool remixing_produce_lfe:1; 234 bool remixing_consume_lfe:1; 235 bool deferred_volume:1; 236 237 pa_resample_method_t resample_method; 238 int realtime_priority; 239 240 pa_server_type_t server_type; 241 pa_cpu_info cpu_info; 242 243 /* hooks */ 244 pa_hook hooks[PA_CORE_HOOK_MAX]; 245 }; 246 247 PA_DECLARE_PUBLIC_CLASS(pa_core); 248 #define PA_CORE(o) pa_core_cast(o) 249 250 enum { 251 PA_CORE_MESSAGE_UNLOAD_MODULE, 252 PA_CORE_MESSAGE_MAX 253 }; 254 255 pa_core* pa_core_new(pa_mainloop_api *m, bool shared, bool enable_memfd, size_t shm_size); 256 257 void pa_core_set_configured_default_sink(pa_core *core, const char *sink); 258 void pa_core_set_configured_default_source(pa_core *core, const char *source); 259 void pa_core_set_policy_default_sink(pa_core *core, const char *sink); 260 void pa_core_set_policy_default_source(pa_core *core, const char *source); 261 262 /* These should be called whenever something changes that may affect the 263 * default sink or source choice. 264 * 265 * If the default source choice happens between two monitor sources, the 266 * monitored sinks are compared, so if the default sink changes, the default 267 * source may change too. However, pa_core_update_default_sink() calls 268 * pa_core_update_default_source() internally, so it's sufficient to only call 269 * pa_core_update_default_sink() when something happens that affects the sink 270 * ordering. */ 271 void pa_core_update_default_sink(pa_core *core); 272 void pa_core_update_default_source(pa_core *core); 273 274 void pa_core_set_exit_idle_time(pa_core *core, int time); 275 276 /* Check whether no one is connected to this core */ 277 void pa_core_check_idle(pa_core *c); 278 279 int pa_core_exit(pa_core *c, bool force, int retval); 280 281 void pa_core_maybe_vacuum(pa_core *c); 282 283 /* wrapper for c->mainloop->time_*() RT time events */ 284 pa_time_event* pa_core_rttime_new(pa_core *c, pa_usec_t usec, pa_time_event_cb_t cb, void *userdata); 285 void pa_core_rttime_restart(pa_core *c, pa_time_event *e, pa_usec_t usec); 286 287 static const size_t PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE = 288 sizeof("USER|APPLICATION|IDLE|SESSION|PASSTHROUGH|INTERNAL|UNAVAILABLE"); 289 290 /* Converts the given suspend cause to a string. The string is written to the 291 * provided buffer. The same buffer is the return value of this function. */ 292 const char *pa_suspend_cause_to_string(pa_suspend_cause_t cause, char buf[PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE]); 293 294 void pa_core_move_streams_to_newly_available_preferred_sink(pa_core *c, pa_sink *s); 295 296 void pa_core_move_streams_to_newly_available_preferred_source(pa_core *c, pa_source *s); 297 298 #endif