pulse: Add pa_operation_set_state_callback() API

[pulseaudio] / src / pulse / operation.c

diff --git a/src/pulse/operation.c b/src/pulse/operation.c
index 13b470a8e33c92238bfb7c5e9056ff737d44ec5c..8fdbea71ded639a72c5bb793eac100d9048b84a1 100644 (file)
--- a/src/pulse/operation.c
+++ b/src/pulse/operation.c
@@ -5,7 +5,7 @@
 
   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 of the License,
+  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
@@ -26,6 +26,7 @@
 #include <pulse/xmalloc.h>
 #include <pulsecore/macro.h>
 #include <pulsecore/flist.h>
+#include <pulse/fork-detect.h>
 
 #include "internal.h"
 #include "operation.h"
@@ -62,6 +63,7 @@ pa_operation *pa_operation_ref(pa_operation *o) {
     PA_REFCNT_INC(o);
     return o;
 }
+
 void pa_operation_unref(pa_operation *o) {
     pa_assert(o);
     pa_assert(PA_REFCNT_VALUE(o) >= 1);
@@ -90,6 +92,8 @@ static void operation_unlink(pa_operation *o) {
     o->stream = NULL;
     o->callback = NULL;
     o->userdata = NULL;
+    o->state_callback = NULL;
+    o->state_userdata = NULL;
 }
 
 static void operation_set_state(pa_operation *o, pa_operation_state_t st) {
@@ -103,6 +107,9 @@ static void operation_set_state(pa_operation *o, pa_operation_state_t st) {
 
     o->state = st;
 
+    if (o->state_callback)
+        o->state_callback(o, o->state_userdata);
+
     if ((o->state == PA_OPERATION_DONE) || (o->state == PA_OPERATION_CANCELED))
         operation_unlink(o);
 
@@ -129,3 +136,17 @@ pa_operation_state_t pa_operation_get_state(pa_operation *o) {
 
     return o->state;
 }
+
+void pa_operation_set_state_callback(pa_operation *o, pa_operation_notify_cb_t cb, void *userdata) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (pa_detect_fork())
+        return;
+
+    if (o->state == PA_OPERATION_DONE || o->state == PA_OPERATION_CANCELED)
+        return;
+
+    o->state_callback = cb;
+    o->state_userdata = userdata;
+}