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path: root/src/pulse/subscribe.h
 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63  #ifndef foosubscribehfoo #define foosubscribehfoo /*** This file is part of PulseAudio. Copyright 2004-2006 Lennart Poettering Copyright 2006 Pierre Ossman for Cendio AB PulseAudio is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. PulseAudio is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with PulseAudio; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. ***/ #include #include #include #include #include /** \page subscribe Event Subscription * * \section overv_sec Overview * * The application can be notified, asynchronously, whenever the internal * layout of the server changes. Possible notifications are described in the * \ref pa_subscription_event_type and \ref pa_subscription_mask * enumerations. * * The application sets the notification mask using pa_context_subscribe() * and the function that will be called whenever a notification occurs using * pa_context_set_subscribe_callback(). */ /** \file * Daemon introspection event subscription subsystem. */ PA_C_DECL_BEGIN /** Subscription event callback prototype */ typedef void (*pa_context_subscribe_cb_t)(pa_context *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata); /** Enable event notification */ pa_operation* pa_context_subscribe(pa_context *c, pa_subscription_mask_t m, pa_context_success_cb_t cb, void *userdata); /** Set the context specific call back function that is called whenever the state of the daemon changes */ void pa_context_set_subscribe_callback(pa_context *c, pa_context_subscribe_cb_t cb, void *userdata); PA_C_DECL_END #endif