Adding AecDump functionality to AppRTCDemo for iOS

webrtc/examples/objc/AppRTCDemo/ARDAppClient.m

Index: webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
diff --git a/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m b/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
index 43eb6f4ad2fff30c4534ec9bea438b015c6d890e..f66a92d3deb2f526c3676bee273f8c3b5ce3c28b 100644
--- a/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
+++ b/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
@@ -129,6 +129,8 @@ static int64_t const kARDAppClientRtcEventLogMaxSizeInBytes = 5e6;  // 5 MB.
     _defaultPeerConnectionConstraints;
 @synthesize isLoopback = _isLoopback;
 @synthesize isAudioOnly = _isAudioOnly;
+@synthesize makeAecDump = _makeAecDump;
+
 
 - (instancetype)init {
   if (self = [super init]) {
@@ -220,11 +222,13 @@ static int64_t const kARDAppClientRtcEventLogMaxSizeInBytes = 5e6;  // 5 MB.
 
 - (void)connectToRoomWithId:(NSString *)roomId
                  isLoopback:(BOOL)isLoopback
-                isAudioOnly:(BOOL)isAudioOnly {
+                isAudioOnly:(BOOL)isAudioOnly
+                makeAecDump:(BOOL)makeAecDump {
   NSParameterAssert(roomId.length);
   NSParameterAssert(_state == kARDAppClientStateDisconnected);
   _isLoopback = isLoopback;
   _isAudioOnly = isAudioOnly;
+  _makeAecDump = makeAecDump;
   self.state = kARDAppClientStateConnecting;
 
 #if defined(WEBRTC_IOS)
@@ -309,6 +313,9 @@ static int64_t const kARDAppClientRtcEventLogMaxSizeInBytes = 5e6;  // 5 MB.
   _hasReceivedSdp = NO;
   _messageQueue = [NSMutableArray array];
 #if defined(WEBRTC_IOS)
+  if (_makeAecDump) {
+    [_factory stopAecDump];
+  }
   [_peerConnection stopRtcEventLog];
 #endif
   _peerConnection = nil;
@@ -562,6 +569,14 @@ static int64_t const kARDAppClientRtcEventLogMaxSizeInBytes = 5e6;  // 5 MB.
       RTCLogError(@"Failed to start event logging.");
     }
   }
+
+  // Start aecdump diagnostic recording.
+  if (_makeAecDump) {
+    NSString *filePath = [self documentsFilePathForFileName:@"audio.aecdump"];
+    if (![_factory startAecDump: filePath]) {

[tkchin_webrtc, 2016/08/19 17:31:42]

nit: no space after :

[peah-webrtc, 2016/08/23 11:45:15]

Done.

+      RTCLogError(@"Failed to create aecdump.");
+    }
+  }
 #endif
 }