From ee9c15aa23f74505c869ff00d0a7d6ed9ca01eaa Mon Sep 17 00:00:00 2001
From: Pierre d'Herbemont <pdherbemont@videolan.org>
Date: Tue, 25 Dec 2007 22:55:15 +0000
Subject: [PATCH] MacOSX/Framework/VLCMediaDiscoverer: Publish -isRunning.

---
 .../Headers/Public/VLCMediaDiscoverer.h       |  3 +
 .../Framework/Sources/VLCMediaDiscoverer.m    | 72 +++++++++++++++++++
 2 files changed, 75 insertions(+)

diff --git a/extras/MacOSX/Framework/Headers/Public/VLCMediaDiscoverer.h b/extras/MacOSX/Framework/Headers/Public/VLCMediaDiscoverer.h
index 2ebd6f5d28..729bb12292 100644
--- a/extras/MacOSX/Framework/Headers/Public/VLCMediaDiscoverer.h
+++ b/extras/MacOSX/Framework/Headers/Public/VLCMediaDiscoverer.h
@@ -32,6 +32,7 @@
     NSString *localizedName;
     VLCMediaList * discoveredMedia;
     void * mdis;
+    BOOL running;
 }
 + (NSArray *)availableMediaDiscoverer;
 
@@ -40,4 +41,6 @@
 - (VLCMediaList *)discoveredMedia;
 
 - (NSString *)localizedName;
+
+- (BOOL)isRunning;
 @end
diff --git a/extras/MacOSX/Framework/Sources/VLCMediaDiscoverer.m b/extras/MacOSX/Framework/Sources/VLCMediaDiscoverer.m
index 6bfa83e2be..4fd895cfe0 100644
--- a/extras/MacOSX/Framework/Sources/VLCMediaDiscoverer.m
+++ b/extras/MacOSX/Framework/Sources/VLCMediaDiscoverer.m
@@ -26,11 +26,40 @@
 #import "VLCMediaDiscoverer.h"
 #import "VLCLibrary.h"
 #import "VLCLibVLCBridging.h"
+#import "VLCEventManager.h"
 
 #include <vlc/libvlc.h>
 
 static NSArray * availableMediaDiscoverer = nil;
 
+@interface VLCMediaDiscoverer (Private)
+- (void)mediaDiscovererStarted;
+- (void)mediaDiscovererEnded;
+@end
+
+/* libvlc event callback */
+static void HandleMediaDiscovererStarted(const libvlc_event_t *event, void *user_data)
+{
+    NSLog(@"oopps");
+    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
+    id self = user_data;
+    [[VLCEventManager sharedManager] callOnMainThreadObject:self 
+                                                 withMethod:@selector(mediaDiscovererStarted) 
+                                       withArgumentAsObject:nil];
+    [pool release];
+}
+
+static void HandleMediaDiscovererEnded( const libvlc_event_t * event, void * user_data)
+{
+    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
+    id self = user_data;
+    [[VLCEventManager sharedManager] callOnMainThreadObject:self 
+                                                 withMethod:@selector(mediaDiscovererEnded) 
+                                       withArgumentAsObject:nil];
+    [pool release];
+}
+
+ 
 @implementation VLCMediaDiscoverer
 + (NSArray *)availableMediaDiscoverer
 {
@@ -55,11 +84,33 @@ static NSArray * availableMediaDiscoverer = nil;
         mdis = libvlc_media_discoverer_new_from_name( [VLCLibrary sharedInstance],
                                                       [aServiceName UTF8String],
                                                       &ex );
+        libvlc_event_manager_t * p_em = libvlc_media_discoverer_event_manager(mdis);
+        libvlc_event_attach(p_em, libvlc_MediaDiscovererStarted, HandleMediaDiscovererStarted, self, NULL);
+        libvlc_event_attach(p_em, libvlc_MediaDiscovererEnded,   HandleMediaDiscovererEnded,   self, NULL);
+        running = libvlc_media_discoverer_is_running(mdis);
+
         quit_on_exception( &ex );       
     }
     return self;
 }
 
+- (void)release
+{
+    @synchronized(self)
+    {
+        if([self retainCount] <= 1)
+        {
+            /* We must make sure we won't receive new event after an upcoming dealloc
+             * We also may receive a -retain in some event callback that may occcur
+             * Before libvlc_event_detach. So this can't happen in dealloc */
+            libvlc_event_manager_t * p_em = libvlc_media_list_event_manager(mdis, NULL);
+            libvlc_event_detach(p_em, libvlc_MediaDiscovererStarted, HandleMediaDiscovererStarted, self, NULL);
+            libvlc_event_detach(p_em, libvlc_MediaDiscovererEnded,   HandleMediaDiscovererEnded,   self, NULL);
+        }
+        [super release];
+    }
+}
+
 - (void)dealloc
 {
     if( localizedName )
@@ -105,4 +156,25 @@ static NSArray * availableMediaDiscoverer = nil;
     }
     return localizedName;
 }
+
+- (BOOL)isRunning
+{
+    return running;
+}
+@end
+
+@implementation VLCMediaDiscoverer (Private)
+- (void)mediaDiscovererStarted
+{
+    [self willChangeValueForKey:@"running"];
+    running = YES;
+    NSLog(@"mediaDiscovererStarted %@", [self localizedName]);
+    [self didChangeValueForKey:@"running"];
+}
+- (void)mediaDiscovererEnded
+{
+    [self willChangeValueForKey:@"running"];
+    running = NO;
+    [self didChangeValueForKey:@"running"];
+}
 @end
-- 
2.39.2