From 44d5e1db8c04d1d8a64bb326dcb88a9c6901811f Mon Sep 17 00:00:00 2001
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@linphone.org>
Date: Fri, 21 Oct 2011 09:51:48 +0200
Subject: [PATCH] Define sound interruption handler in objc. Used to pause sip
 call.

---
 Classes/LinphoneUI/LinphoneManager.h |  3 ++-
 Classes/LinphoneUI/LinphoneManager.m | 17 +++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/Classes/LinphoneUI/LinphoneManager.h b/Classes/LinphoneUI/LinphoneManager.h
index 2ed3b0184..1acaebc93 100644
--- a/Classes/LinphoneUI/LinphoneManager.h
+++ b/Classes/LinphoneUI/LinphoneManager.h
@@ -18,6 +18,7 @@
  */              
 
 #import <Foundation/Foundation.h>
+#import <AVFoundation/AVAudioSession.h>
 #import <SystemConfiguration/SCNetworkReachability.h>
 #include "linphonecore.h"
 #import "LogView.h"
@@ -28,7 +29,7 @@ typedef enum _Connectivity {
 	,none
 } Connectivity;
 @class FastAddressBook;
-@interface LinphoneManager : NSObject {
+@interface LinphoneManager : NSObject <AVAudioSessionDelegate> {
 @private
 	SCNetworkReachabilityContext proxyReachabilityContext;
 	SCNetworkReachabilityRef proxyReachability;
diff --git a/Classes/LinphoneUI/LinphoneManager.m b/Classes/LinphoneUI/LinphoneManager.m
index 97b715318..546aa78dd 100644
--- a/Classes/LinphoneUI/LinphoneManager.m
+++ b/Classes/LinphoneUI/LinphoneManager.m
@@ -726,6 +726,7 @@ void networkReachabilityCallBack(SCNetworkReachabilityRef target, SCNetworkReach
 	//init audio session
 	AVAudioSession *audioSession = [AVAudioSession sharedInstance];
 	BOOL bAudioInputAvailable= [audioSession inputIsAvailable];
+    [audioSession setDelegate:self];
 	
 	if(!bAudioInputAvailable){
 		UIAlertView* error = [[UIAlertView alloc]	initWithTitle:NSLocalizedString(@"No microphone",nil)
@@ -780,4 +781,20 @@ void networkReachabilityCallBack(SCNetworkReachabilityRef target, SCNetworkReach
 	mLogView = view;
 }
 
+-(void) beginInterruption {
+    LinphoneCall* c = linphone_core_get_current_call(theLinphoneCore);
+    ms_message("Sound interruption detected!");
+    if (c) {
+        linphone_core_pause_call(theLinphoneCore, c);
+    }
+}
+
+-(void) endInterruption {
+    const MSList* c = linphone_core_get_calls(theLinphoneCore);
+    ms_message("Sound interruption ended!");
+    if (c) {
+        linphone_core_resume_call(theLinphoneCore, (LinphoneCall*) c->data);
+    }    
+}
+
 @end