BWE allocation strategy

webrtc/examples/objc/AppRTCMobile/ARDAppClient.m

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #import "ARDAppClient+Internal.h"
 
 #import "WebRTC/RTCAVFoundationVideoSource.h"
 #import "WebRTC/RTCAudioTrack.h"
 #import "WebRTC/RTCCameraVideoCapturer.h"
 #import "WebRTC/RTCConfiguration.h"
 #import "WebRTC/RTCFileLogger.h"
 #import "WebRTC/RTCIceServer.h"
 #import "WebRTC/RTCLogging.h"
 #import "WebRTC/RTCMediaConstraints.h"
 #import "WebRTC/RTCMediaStream.h"
 #import "WebRTC/RTCPeerConnectionFactory.h"
 #import "WebRTC/RTCRtpSender.h"
 #import "WebRTC/RTCTracing.h"
 #import "WebRTC/RTCVideoTrack.h"
 
 #import "ARDAppEngineClient.h"
+#import "ARDBitrateAllocationStrategy.h"
 #import "ARDJoinResponse.h"
 #import "ARDMessageResponse.h"
 #import "ARDSDPUtils.h"
 #import "ARDSettingsModel.h"
 #import "ARDSignalingMessage.h"
 #import "ARDTURNClient+Internal.h"
 #import "ARDUtilities.h"
 #import "ARDWebSocketChannel.h"
 #import "RTCIceCandidate+JSON.h"
 #import "RTCSessionDescription+JSON.h"
@@ skipping 58 matching lines @@
   _timerHandler();
 }
 
 @end
 
 @implementation ARDAppClient {
   RTCFileLogger *_fileLogger;
   ARDTimerProxy *_statsTimer;
   ARDSettingsModel *_settings;
   RTCVideoTrack *_localVideoTrack;
+  ARDBitrateAllocationStrategy *_bitrateAllocationStrategy;
 }
 
 @synthesize shouldGetStats = _shouldGetStats;
 @synthesize state = _state;
 @synthesize delegate = _delegate;
 @synthesize roomServerClient = _roomServerClient;
 @synthesize channel = _channel;
 @synthesize loopbackChannel = _loopbackChannel;
 @synthesize turnClient = _turnClient;
 @synthesize peerConnection = _peerConnection;
@@ skipping 177 matching lines @@
     }
     // Disconnect from collider.
     _channel = nil;
   }
   _clientId = nil;
   _roomId = nil;
   _isInitiator = NO;
   _hasReceivedSdp = NO;
   _messageQueue = [NSMutableArray array];
   _localVideoTrack = nil;
+  _bitrateAllocationStrategy = nil;
+
 #if defined(WEBRTC_IOS)
   [_factory stopAecDump];
   [_peerConnection stopRtcEventLog];
 #endif
   [_peerConnection close];
   _peerConnection = nil;
   self.state = kARDAppClientStateDisconnected;
 #if defined(WEBRTC_IOS)
   if (kARDAppClientEnableTracing) {
     RTCStopInternalCapture();
@@ skipping 212 matching lines @@
   }
   self.state = kARDAppClientStateConnected;
 
   // Create peer connection.
   RTCMediaConstraints *constraints = [self defaultPeerConnectionConstraints];
   RTCConfiguration *config = [[RTCConfiguration alloc] init];
   config.iceServers = _iceServers;
   _peerConnection = [_factory peerConnectionWithConfiguration:config
                                                   constraints:constraints
                                                      delegate:self];
+
+  // Create bitrate allocation strategy
+  _bitrateAllocationStrategy = [ARDBitrateAllocationStrategy new];
+  [_bitrateAllocationStrategy setAudioPriorityStrategy:_peerConnection
+                                          audioTrackId:kARDAudioTrackId];
+
   // Create AV senders.
   [self createMediaSenders];
+
   if (_isInitiator) {
     // Send offer.
     __weak ARDAppClient *weakSelf = self;
     [_peerConnection offerForConstraints:[self defaultOfferConstraints]
                        completionHandler:^(RTCSessionDescription *sdp,
                                            NSError *error) {
       ARDAppClient *strongSelf = weakSelf;
       [strongSelf peerConnection:strongSelf.peerConnection
           didCreateSessionDescription:sdp
                                 error:error];
@@ skipping 133 matching lines @@
 }
 
 - (void)createMediaSenders {
   RTCMediaConstraints *constraints = [self defaultMediaAudioConstraints];
   RTCAudioSource *source = [_factory audioSourceWithConstraints:constraints];
   RTCAudioTrack *track = [_factory audioTrackWithSource:source
                                                 trackId:kARDAudioTrackId];
   RTCMediaStream *stream = [_factory mediaStreamWithStreamId:kARDMediaStreamId];
   [stream addAudioTrack:track];
   _localVideoTrack = [self createLocalVideoTrack];
-  if(_localVideoTrack) {
+  if (_localVideoTrack) {
     [stream addVideoTrack:_localVideoTrack];
   }
   [_peerConnection addStream:stream];
 }
 
 - (RTCVideoTrack *)createLocalVideoTrack {
   RTCVideoTrack* localVideoTrack = nil;
   // The iOS simulator doesn't provide any sort of camera capture
   // support or emulation (http://goo.gl/rHAnC1) so don't bother
   // trying to open a local stream.
@@ skipping 127 matching lines @@
                                          code:kARDAppClientErrorInvalidRoom
                                      userInfo:@{
         NSLocalizedDescriptionKey: @"Invalid room.",
       }];
       break;
   }
   return error;
 }
 
 @end