BWE allocation strategy

webrtc/examples/objc/AppRTCMobile/ARDBitrateAllocationStrategy.mm

Index: webrtc/examples/objc/AppRTCMobile/ARDBitrateAllocationStrategy.mm
diff --git a/webrtc/examples/objc/AppRTCMobile/ARDBitrateAllocationStrategy.mm b/webrtc/examples/objc/AppRTCMobile/ARDBitrateAllocationStrategy.mm
new file mode 100644
index 0000000000000000000000000000000000000000..4b7bde1db08aba7b5193a5a6ffb5c0447043cced
--- /dev/null
+++ b/webrtc/examples/objc/AppRTCMobile/ARDBitrateAllocationStrategy.mm
@@ -0,0 +1,31 @@
+/*
+ *  Copyright 2017 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 "ARDBitrateAllocationStrategy.h"
+#import "WebRTC/RTCBitrateAllocationStrategy.h"
+
+#include "webrtc/base/bitrateallocationstrategy.h"
+
+constexpr uint32_t kSufficientAudioBitrate=16000;
+
+@implementation ARDBitrateAllocationStrategy
+
++ (void) setAudioPriorityStrategy: (RTCPeerConnection*) peerConnection
+                     audioTrackId:(NSString *) audioTrackId {
+  [peerConnection setBitrateAllocationStrategy:
+    [[RTCBitrateAllocationStrategy alloc] initWith:
+     new rtc::AudioPriorityBitrateAllocationStrategy(
+        std::string(audioTrackId.UTF8String),
+        kSufficientAudioBitrate)
+    ]
+  ];
+}
+
+@end