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#ifndef foooperationhfoo
#define foooperationhfoo
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
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, see <http://www.gnu.org/licenses/>.
***/
#include <pulse/cdecl.h>
#include <pulse/def.h>
#include <pulse/version.h>
/** \file
* Asynchronous operations */
PA_C_DECL_BEGIN
/** An asynchronous operation object */
typedef struct pa_operation pa_operation;
/** A callback for operation state changes */
typedef void (*pa_operation_notify_cb_t) (pa_operation *o, void *userdata);
/** Increase the reference count by one */
pa_operation *pa_operation_ref(pa_operation *o);
/** Decrease the reference count by one */
void pa_operation_unref(pa_operation *o);
/** Cancel the operation. Beware! This will not necessarily cancel the
* execution of the operation on the server side. However it will make
* sure that the callback associated with this operation will not be
* called anymore, effectively disabling the operation from the client
* side's view. */
void pa_operation_cancel(pa_operation *o);
/** Return the current status of the operation */
pa_operation_state_t pa_operation_get_state(const pa_operation *o);
/** Set the callback function that is called when the operation state
* changes. Usually this is not necessary, since the functions that
* create pa_operation objects already take a callback that is called
* when the operation finishes. Registering a state change callback is
* mainly useful, if you want to get called back also if the operation
* gets cancelled. \since 4.0 */
void pa_operation_set_state_callback(pa_operation *o, pa_operation_notify_cb_t cb, void *userdata);
PA_C_DECL_END
#endif
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