Add VideoSendStream::Stats::prefered_media_bitrate_bps

webrtc/modules/video_coding/utility/simulcast_rate_allocator_unittest.cc

 /*
  *  Copyright (c) 2016 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.
  */
 
@@ skipping 190 matching lines @@
     const uint32_t bitrate = codec_.simulcastStream[0].targetBitrate +
                              codec_.simulcastStream[1].targetBitrate +
                              codec_.simulcastStream[2].maxBitrate;
     uint32_t expected[] = {codec_.simulcastStream[0].targetBitrate,
                            codec_.simulcastStream[1].targetBitrate,
                            codec_.simulcastStream[2].maxBitrate};
     ExpectEqual(expected, allocator_->GetAllocation(bitrate));
   }
 }
 
+TEST_F(SimulcastRateAllocatorTest, GetPreferredBitrate) {
+  EXPECT_EQ(codec_.maxBitrate, allocator_->GetPreferedBitrate());
+}
+
+TEST_F(SimulcastRateAllocatorTest, GetPreferredBitrateSimulcast) {
+  codec_.numberOfSimulcastStreams = 3;
+  codec_.maxBitrate = 999999;
+  codec_.simulcastStream[0].minBitrate = 10;
+  codec_.simulcastStream[0].targetBitrate = 100;
+
+  codec_.simulcastStream[0].maxBitrate = 500;
+  codec_.simulcastStream[1].minBitrate = 50;
+  codec_.simulcastStream[1].targetBitrate = 500;
+  codec_.simulcastStream[1].maxBitrate = 1000;
+
+  codec_.simulcastStream[2].minBitrate = 2000;
+  codec_.simulcastStream[2].targetBitrate = 3000;
+  codec_.simulcastStream[2].maxBitrate = 4000;
+  CreateAllocator();
+
+  uint32_t preferred_bitrate;
+  preferred_bitrate = codec_.simulcastStream[0].targetBitrate;
+  preferred_bitrate += codec_.simulcastStream[1].targetBitrate;
+  preferred_bitrate += codec_.simulcastStream[2].maxBitrate;
+
+  EXPECT_EQ(preferred_bitrate, allocator_->GetPreferedBitrate());
+}
+
 }  // namespace webrtc