code.delx.au - pulseaudio/blob - src/pulsecore/core.h

   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, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #include <pulse/mainloop-api.h>
  26 #include <pulse/sample.h>
  27 #include <pulsecore/cpu.h>
  28
  29 typedef struct pa_core pa_core;
  30
  31 /* This is a bitmask that encodes the cause why a sink/source is
  32  * suspended. */
  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_ALL = 0xFFFF      /* Magic cause that can be used to resume forcibly */
  40 } pa_suspend_cause_t;
  41
  42 #include <pulsecore/idxset.h>
  43 #include <pulsecore/hashmap.h>
  44 #include <pulsecore/memblock.h>
  45 #include <pulsecore/resampler.h>
  46 #include <pulsecore/llist.h>
  47 #include <pulsecore/hook-list.h>
  48 #include <pulsecore/asyncmsgq.h>
  49 #include <pulsecore/sample-util.h>
  50 #include <pulsecore/sink.h>
  51 #include <pulsecore/source.h>
  52 #include <pulsecore/core-subscribe.h>
  53 #include <pulsecore/msgobject.h>
  54
  55 typedef enum pa_server_type {
  56     PA_SERVER_TYPE_UNSET,
  57     PA_SERVER_TYPE_USER,
  58     PA_SERVER_TYPE_SYSTEM,
  59     PA_SERVER_TYPE_NONE
  60 } pa_server_type_t;
  61
  62 typedef enum pa_core_state {
  63     PA_CORE_STARTUP,
  64     PA_CORE_RUNNING,
  65     PA_CORE_SHUTDOWN
  66 } pa_core_state_t;
  67
  68 typedef enum pa_core_hook {
  69     PA_CORE_HOOK_SINK_NEW,
  70     PA_CORE_HOOK_SINK_FIXATE,
  71     PA_CORE_HOOK_SINK_PUT,
  72     PA_CORE_HOOK_SINK_UNLINK,
  73     PA_CORE_HOOK_SINK_UNLINK_POST,
  74     PA_CORE_HOOK_SINK_STATE_CHANGED,
  75     PA_CORE_HOOK_SINK_PROPLIST_CHANGED,
  76     PA_CORE_HOOK_SINK_PORT_CHANGED,
  77     PA_CORE_HOOK_SOURCE_NEW,
  78     PA_CORE_HOOK_SOURCE_FIXATE,
  79     PA_CORE_HOOK_SOURCE_PUT,
  80     PA_CORE_HOOK_SOURCE_UNLINK,
  81     PA_CORE_HOOK_SOURCE_UNLINK_POST,
  82     PA_CORE_HOOK_SOURCE_STATE_CHANGED,
  83     PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED,
  84     PA_CORE_HOOK_SOURCE_PORT_CHANGED,
  85     PA_CORE_HOOK_SINK_INPUT_NEW,
  86     PA_CORE_HOOK_SINK_INPUT_FIXATE,
  87     PA_CORE_HOOK_SINK_INPUT_PUT,
  88     PA_CORE_HOOK_SINK_INPUT_UNLINK,
  89     PA_CORE_HOOK_SINK_INPUT_UNLINK_POST,
  90     PA_CORE_HOOK_SINK_INPUT_MOVE_START,
  91     PA_CORE_HOOK_SINK_INPUT_MOVE_FINISH,
  92     PA_CORE_HOOK_SINK_INPUT_MOVE_FAIL,
  93     PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED,
  94     PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED,
  95     PA_CORE_HOOK_SINK_INPUT_SEND_EVENT,
  96     PA_CORE_HOOK_SOURCE_OUTPUT_NEW,
  97     PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE,
  98     PA_CORE_HOOK_SOURCE_OUTPUT_PUT,
  99     PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK,
 100     PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST,
 101     PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START,
 102     PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH,
 103     PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL,
 104     PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED,
 105     PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED,
 106     PA_CORE_HOOK_SOURCE_OUTPUT_SEND_EVENT,
 107     PA_CORE_HOOK_CLIENT_NEW,
 108     PA_CORE_HOOK_CLIENT_PUT,
 109     PA_CORE_HOOK_CLIENT_UNLINK,
 110     PA_CORE_HOOK_CLIENT_PROPLIST_CHANGED,
 111     PA_CORE_HOOK_CLIENT_SEND_EVENT,
 112     PA_CORE_HOOK_CARD_NEW,
 113     PA_CORE_HOOK_CARD_PUT,
 114     PA_CORE_HOOK_CARD_UNLINK,
 115     PA_CORE_HOOK_CARD_PROFILE_CHANGED,
 116     PA_CORE_HOOK_MAX
 117 } pa_core_hook_t;
 118
 119 /* The core structure of PulseAudio. Every PulseAudio daemon contains
 120  * exactly one of these. It is used for storing kind of global
 121  * variables for the daemon. */
 122
 123 struct pa_core {
 124     pa_msgobject parent;
 125
 126     pa_core_state_t state;
 127
 128     /* A random value which may be used to identify this instance of
 129      * PulseAudio. Not cryptographically secure in any way. */
 130     uint32_t cookie;
 131
 132     pa_mainloop_api *mainloop;
 133
 134     /* idxset of all kinds of entities */
 135     pa_idxset *clients, *cards, *sinks, *sources, *sink_inputs, *source_outputs, *modules, *scache;
 136
 137     /* Some hashmaps for all sorts of entities */
 138     pa_hashmap *namereg, *shared;
 139
 140     /* The default sink/source */
 141     pa_source *default_source;
 142     pa_sink *default_sink;
 143
 144     pa_channel_map default_channel_map;
 145     pa_sample_spec default_sample_spec;
 146     uint32_t alternate_sample_rate;
 147     unsigned default_n_fragments, default_fragment_size_msec;
 148     unsigned deferred_volume_safety_margin_usec;
 149     int deferred_volume_extra_delay_usec;
 150
 151     pa_defer_event *module_defer_unload_event;
 152
 153     pa_defer_event *subscription_defer_event;
 154     PA_LLIST_HEAD(pa_subscription, subscriptions);
 155     PA_LLIST_HEAD(pa_subscription_event, subscription_event_queue);
 156     pa_subscription_event *subscription_event_last;
 157
 158     pa_mempool *mempool;
 159     pa_silence_cache silence_cache;
 160
 161     pa_time_event *exit_event;
 162     pa_time_event *scache_auto_unload_event;
 163
 164     int exit_idle_time, scache_idle_time;
 165
 166     pa_bool_t flat_volumes:1;
 167     pa_bool_t disallow_module_loading:1;
 168     pa_bool_t disallow_exit:1;
 169     pa_bool_t running_as_daemon:1;
 170     pa_bool_t realtime_scheduling:1;
 171     pa_bool_t disable_remixing:1;
 172     pa_bool_t disable_lfe_remixing:1;
 173     pa_bool_t deferred_volume:1;
 174
 175     pa_resample_method_t resample_method;
 176     int realtime_priority;
 177
 178     pa_server_type_t server_type;
 179     pa_cpu_info cpu_info;
 180
 181     /* hooks */
 182     pa_hook hooks[PA_CORE_HOOK_MAX];
 183 };
 184
 185 PA_DECLARE_PUBLIC_CLASS(pa_core);
 186 #define PA_CORE(o) pa_core_cast(o)
 187
 188 enum {
 189     PA_CORE_MESSAGE_UNLOAD_MODULE,
 190     PA_CORE_MESSAGE_MAX
 191 };
 192
 193 pa_core* pa_core_new(pa_mainloop_api *m, pa_bool_t shared, size_t shm_size);
 194
 195 /* Check whether no one is connected to this core */
 196 void pa_core_check_idle(pa_core *c);
 197
 198 int pa_core_exit(pa_core *c, pa_bool_t force, int retval);
 199
 200 void pa_core_maybe_vacuum(pa_core *c);
 201
 202 /* wrapper for c->mainloop->time_*() RT time events */
 203 pa_time_event* pa_core_rttime_new(pa_core *c, pa_usec_t usec, pa_time_event_cb_t cb, void *userdata);
 204 void pa_core_rttime_restart(pa_core *c, pa_time_event *e, pa_usec_t usec);
 205
 206 #endif