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74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
#ifndef foohooklistfoo
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#define foohooklistfoo
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/***
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This file is part of PulseAudio.
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Copyright 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
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published by the Free Software Foundation; either version 2 of the
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License, 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
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License along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <pulse/xmalloc.h>
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#include <pulse/gccmacro.h>
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#include <pulsecore/llist.h>
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typedef struct pa_hook_slot pa_hook_slot;
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typedef struct pa_hook pa_hook;
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typedef enum pa_hook_result {
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PA_HOOK_OK = 0,
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PA_HOOK_STOP = 1,
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PA_HOOK_CANCEL = -1
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} pa_hook_result_t;
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typedef enum pa_hook_priority {
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PA_HOOK_EARLY = -100,
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PA_HOOK_NORMAL = 0,
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PA_HOOK_LATE = 100
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} pa_hook_priority_t;
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typedef pa_hook_result_t (*pa_hook_cb_t)(
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void *hook_data,
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void *call_data,
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void *slot_data);
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struct pa_hook_slot {
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pa_bool_t dead;
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pa_hook *hook;
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pa_hook_priority_t priority;
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pa_hook_cb_t callback;
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void *data;
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PA_LLIST_FIELDS(pa_hook_slot);
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};
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struct pa_hook {
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PA_LLIST_HEAD(pa_hook_slot, slots);
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int n_firing, n_dead;
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void *data;
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};
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void pa_hook_init(pa_hook *hook, void *data);
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void pa_hook_done(pa_hook *hook);
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pa_hook_slot* pa_hook_connect(pa_hook *hook, pa_hook_priority_t prio, pa_hook_cb_t cb, void *data);
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void pa_hook_slot_free(pa_hook_slot *slot);
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pa_hook_result_t pa_hook_fire(pa_hook *hook, void *data);
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#endif
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