1 files changed, 71 insertions, 0 deletions
diff --git a/src/pulsecore/hook-list.h b/src/pulsecore/hook-list.h
new file mode 100644
index 0000000..63037e7
--- /dev/null
+++ b/src/pulsecore/hook-list.h
@@ -0,0 +1,71 @@
+#ifndef foohooklistfoo
+#define foohooklistfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 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 <pulsecore/llist.h>
+
+typedef struct pa_hook_slot pa_hook_slot;
+typedef struct pa_hook pa_hook;
+
+typedef enum pa_hook_result {
+    PA_HOOK_OK = 0,
+    PA_HOOK_STOP = 1,
+    PA_HOOK_CANCEL = -1
+} pa_hook_result_t;
+
+typedef enum pa_hook_priority {
+    PA_HOOK_EARLY = -100,
+    PA_HOOK_NORMAL = 0,
+    PA_HOOK_LATE = 100
+} pa_hook_priority_t;
+
+typedef pa_hook_result_t (*pa_hook_cb_t)(
+        void *hook_data,
+        void *call_data,
+        void *slot_data);
+
+struct pa_hook_slot {
+    bool dead;
+    pa_hook *hook;
+    pa_hook_priority_t priority;
+    pa_hook_cb_t callback;
+    void *data;
+    PA_LLIST_FIELDS(pa_hook_slot);
+};
+
+struct pa_hook {
+    PA_LLIST_HEAD(pa_hook_slot, slots);
+    int n_firing, n_dead;
+
+    void *data;
+};
+
+void pa_hook_init(pa_hook *hook, void *data);
+void pa_hook_done(pa_hook *hook);
+
+pa_hook_slot* pa_hook_connect(pa_hook *hook, pa_hook_priority_t prio, pa_hook_cb_t cb, void *data);
+void pa_hook_slot_free(pa_hook_slot *slot);
+
+pa_hook_result_t pa_hook_fire(pa_hook *hook, void *data);
+
+bool pa_hook_is_firing(pa_hook *hook);
+
+#endif