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65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
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#ifndef foooperationhfoo
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#define foooperationhfoo
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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***/
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#include <pulse/cdecl.h>
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#include <pulse/def.h>
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#include <pulse/version.h>
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/** \file
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* Asynchronous operations */
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PA_C_DECL_BEGIN
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/** An asynchronous operation object */
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typedef struct pa_operation pa_operation;
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/** A callback for operation state changes */
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typedef void (*pa_operation_notify_cb_t) (pa_operation *o, void *userdata);
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/** Increase the reference count by one */
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pa_operation *pa_operation_ref(pa_operation *o);
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/** Decrease the reference count by one */
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void pa_operation_unref(pa_operation *o);
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/** Cancel the operation. Beware! This will not necessarily cancel the
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* execution of the operation on the server side. However it will make
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* sure that the callback associated with this operation will not be
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* called anymore, effectively disabling the operation from the client
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* side's view. */
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void pa_operation_cancel(pa_operation *o);
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/** Return the current status of the operation */
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pa_operation_state_t pa_operation_get_state(pa_operation *o);
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/** Set the callback function that is called when the operation state
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* changes. Usually this is not necessary, since the functions that
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* create pa_operation objects already take a callback that is called
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* when the operation finishes. Registering a state change callback is
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* mainly useful, if you want to get called back also if the operation
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* gets cancelled. \since 4.0 */
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void pa_operation_set_state_callback(pa_operation *o, pa_operation_notify_cb_t cb, void *userdata);
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PA_C_DECL_END
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#endif
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