Change audio route depending on proyimity sensor.

Signed-off-by: Ivan Sein <ivan@nextcloud.com>

VideoCalls/AppDelegate.m

@@ -57,9 +57,10 @@
     
     [FIRMessaging messaging].delegate = self;
     
-    RTCAudioSessionConfiguration *webRTCConfig = [RTCAudioSessionConfiguration webRTCConfiguration];
-    webRTCConfig.categoryOptions = webRTCConfig.categoryOptions | AVAudioSessionCategoryOptionDefaultToSpeaker;
-    [RTCAudioSessionConfiguration setWebRTCConfiguration:webRTCConfig];
+    RTCAudioSessionConfiguration *configuration = [RTCAudioSessionConfiguration webRTCConfiguration];
+    configuration.category = AVAudioSessionCategoryPlayAndRecord;
+    configuration.mode = AVAudioSessionModeVideoChat;
+    [RTCAudioSessionConfiguration setWebRTCConfiguration:configuration];
     
     return YES;
 }

VideoCalls/CallViewController.m

@@ -126,11 +126,13 @@ typedef NS_ENUM(NSInteger, CallState) {
 {
     if ([[UIDevice currentDevice] proximityState] == YES) {
         [self disableLocalVideo];
+        [_callController setAudioSessionToVoiceChatMode];
     } else {
         // Only enable video if it was not disabled by the user.
         if (!_userDisabledVideo) {
             [self enableLocalVideo];
         }
+        [_callController setAudioSessionToVideoChatMode];
     }
 }
 

VideoCalls/NCCallController.h

@@ -52,6 +52,8 @@ typedef void (^GetUserIdForSessionIdCompletionBlock)(NSString *userId, NSError *
 - (BOOL)isAudioEnabled;
 - (void)enableVideo:(BOOL)enable;
 - (void)enableAudio:(BOOL)enable;
+- (void)setAudioSessionToVoiceChatMode;
+- (void)setAudioSessionToVideoChatMode;
 - (NSString *)getUserIdFromSessionId:(NSString *)sessionId;
 - (void)getUserIdInServerFromSessionId:(NSString *)sessionId withCompletionBlock:(GetUserIdForSessionIdCompletionBlock)block;
 

VideoCalls/NCCallController.m

@@ -17,6 +17,8 @@
 #import <WebRTC/RTCVideoTrack.h>
 #import <WebRTC/RTCVideoCapturer.h>
 #import <WebRTC/RTCCameraVideoCapturer.h>
+#import <WebRTC/RTCAudioSession.h>
+#import <WebRTC/RTCAudioSessionConfiguration.h>
 #import "NCAPIController.h"
 #import "NCSignalingController.h"
 
@@ -54,6 +56,8 @@ static NSString * const kNCVideoTrackKind = @"video";
         
         _signalingController = [[NCSignalingController alloc] init];
         _signalingController.observer = self;
+        
+        [self setAudioSessionToVideoChatMode];
     }
     
     return self;
@@ -98,6 +102,8 @@ static NSString * const kNCVideoTrackKind = @"video";
     _peerConnectionFactory = nil;
     _connectionsDict = nil;
     
+    [self setAudioSessionToVideoChatMode];
+    
     [[NCAPIController sharedInstance] leaveCall:_room.token withCompletionBlock:^(NSError *error) {
         if (!error) {
             [self stopPingCall];
@@ -219,6 +225,41 @@ static NSString * const kNCVideoTrackKind = @"video";
     [self createLocalVideoTrack];
 }
 
+#pragma mark - Audio session configuration
+
+- (void)setAudioSessionToVoiceChatMode
+{
+    [self changeAudioSessionConfigurationModeTo:AVAudioSessionModeVoiceChat];
+}
+
+- (void)setAudioSessionToVideoChatMode
+{
+    [self changeAudioSessionConfigurationModeTo:AVAudioSessionModeVideoChat];
+}
+
+- (void)changeAudioSessionConfigurationModeTo:(NSString *)mode
+{
+    RTCAudioSessionConfiguration *configuration = [[RTCAudioSessionConfiguration alloc] init];
+    configuration.category = AVAudioSessionCategoryPlayAndRecord;
+    configuration.mode = mode;
+    
+    RTCAudioSession *session = [RTCAudioSession sharedInstance];
+    [session lockForConfiguration];
+    BOOL hasSucceeded = NO;
+    NSError *error = nil;
+    if (session.isActive) {
+        hasSucceeded = [session setConfiguration:configuration error:&error];
+    } else {
+        hasSucceeded = [session setConfiguration:configuration
+                                          active:YES
+                                           error:&error];
+    }
+    if (!hasSucceeded) {
+        NSLog(@"Error setting configuration: %@", error.localizedDescription);
+    }
+    [session unlockForConfiguration];
+}
+
 #pragma mark - Peer Connection Wrapper
 
 - (NCPeerConnection *)getPeerConnectionWrapperForSessionId:(NSString *)sessionId