Hooked up Opus CBR support when configured manually or through an SdpAudioFormat.

webrtc/modules/audio_coding/codecs/opus/audio_encoder_opus_unittest.cc

 /*
  *  Copyright (c) 2015 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 565 matching lines @@
 
   config = CreateConfigWithParameters({{"useinbandfec", "1"}});
   EXPECT_TRUE(config.fec_enabled);
 
   config = CreateConfigWithParameters({{"usedtx", "0"}});
   EXPECT_FALSE(config.dtx_enabled);
 
   config = CreateConfigWithParameters({{"usedtx", "1"}});
   EXPECT_TRUE(config.dtx_enabled);
 
+  config = CreateConfigWithParameters({{"cbr", "0"}});
+  EXPECT_FALSE(config.cbr_enabled);
+
+  config = CreateConfigWithParameters({{"cbr", "1"}});
+  EXPECT_TRUE(config.cbr_enabled);
+
   config = CreateConfigWithParameters({{"maxplaybackrate", "12345"}});
   EXPECT_EQ(12345, config.max_playback_rate_hz);
 
   config = CreateConfigWithParameters({{"maxaveragebitrate", "96000"}});
   EXPECT_EQ(96000, config.bitrate_bps);
 
   config = CreateConfigWithParameters({{"maxptime", "40"}});
   for (int frame_length : config.supported_frame_lengths_ms) {
     EXPECT_LE(frame_length, 40);
   }
@@ skipping 30 matching lines @@
   AudioEncoderOpus::Config config;
   config = CreateConfigWithParameters({{"stereo", "invalid"}});
   EXPECT_EQ(default_config.num_channels, config.num_channels);
 
   config = CreateConfigWithParameters({{"useinbandfec", "invalid"}});
   EXPECT_EQ(default_config.fec_enabled, config.fec_enabled);
 
   config = CreateConfigWithParameters({{"usedtx", "invalid"}});
   EXPECT_EQ(default_config.dtx_enabled, config.dtx_enabled);
 
+  config = CreateConfigWithParameters({{"cbr", "invalid"}});
+  EXPECT_EQ(default_config.dtx_enabled, config.dtx_enabled);
+
   config = CreateConfigWithParameters({{"maxplaybackrate", "0"}});
   EXPECT_EQ(default_config.max_playback_rate_hz, config.max_playback_rate_hz);
 
   config = CreateConfigWithParameters({{"maxplaybackrate", "-23"}});
   EXPECT_EQ(default_config.max_playback_rate_hz, config.max_playback_rate_hz);
 
   config = CreateConfigWithParameters({{"maxplaybackrate", "not a number!"}});
   EXPECT_EQ(default_config.max_playback_rate_hz, config.max_playback_rate_hz);
 
   config = CreateConfigWithParameters({{"maxaveragebitrate", "0"}});
@@ skipping 94 matching lines @@
   EXPECT_EQ(24001, config.max_playback_rate_hz);
   EXPECT_EQ(32000, config.bitrate_bps);
 
   config = CreateConfigWithParameters({{"maxplaybackrate", "24001"},
                                        {"stereo", "1"}});
   EXPECT_EQ(24001, config.max_playback_rate_hz);
   EXPECT_EQ(64000, config.bitrate_bps);
 }
 
 }  // namespace webrtc