Adding activation logic of the new APM level control functionality using MediaConstraints

webrtc/api/localaudiosource.cc

 /*
  *  Copyright 2013 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 31 matching lines @@
        options->delay_agnostic_aec},
       {MediaConstraintsInterface::kAutoGainControl, options->auto_gain_control},
       {MediaConstraintsInterface::kExperimentalAutoGainControl,
        options->experimental_agc},
       {MediaConstraintsInterface::kNoiseSuppression,
        options->noise_suppression},
       {MediaConstraintsInterface::kExperimentalNoiseSuppression,
        options->experimental_ns},
       {MediaConstraintsInterface::kIntelligibilityEnhancer,
        options->intelligibility_enhancer},
+      {MediaConstraintsInterface::kLevelControl, options->level_control},
       {MediaConstraintsInterface::kHighpassFilter, options->highpass_filter},
       {MediaConstraintsInterface::kTypingNoiseDetection,
        options->typing_detection},
-      {MediaConstraintsInterface::kAudioMirroring, options->stereo_swapping}
-  };
+      {MediaConstraintsInterface::kAudioMirroring, options->stereo_swapping}};

[hlundin-webrtc, 2016/06/27 11:44:27]

I presume clang-format gave you this, but in this case it makes sense to ignore
that.

[peah-webrtc, 2016/06/27 23:00:05]

Yes, that was clang-format, and I definitely agree that it was better before. I
reverted that format change.

Done.

 
   for (const auto& constraint : constraints) {
     bool value = false;
     if (!rtc::FromString(constraint.value, &value))
       continue;
 
     for (auto& entry : key_to_value) {
       if (constraint.key.compare(entry.name) == 0)
         entry.value = rtc::Optional<bool>(value);
     }
@@ skipping 38 matching lines @@
 void LocalAudioSource::Initialize(
     const PeerConnectionFactoryInterface::Options& options,
     const cricket::AudioOptions* audio_options) {
   if (!audio_options)
     return;
 
   options_ = *audio_options;
 }
 
 }  // namespace webrtc