Improving support for Android Audio Effects in WebRTC

webrtc/modules/audio_device/android/audio_device_template.h

 /*
  *  Copyright (c) 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.
  */
 
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   // is not blacklisted.
   bool BuiltInAECIsAvailable() const override {
     return audio_manager_->IsAcousticEchoCancelerSupported();
   }
 
   int32_t EnableBuiltInAEC(bool enable) override {
     RTC_CHECK(BuiltInAECIsAvailable()) << "HW AEC is not available";
     return input_.EnableBuiltInAEC(enable);
   }
 
+  // Returns true if the device both supports built in AGC and the device
+  // is not blacklisted.
+  bool BuiltInAGCIsAvailable() const override {
+    return audio_manager_->IsAutomaticGainControlSupported();
+  }
+
+  int32_t EnableBuiltInAGC(bool enable) override {
+    RTC_CHECK(BuiltInAGCIsAvailable()) << "HW AGC is not available";
+    return input_.EnableBuiltInAGC(enable);
+  }
+
+  // Returns true if the device both supports built in NS and the device
+  // is not blacklisted.
+  bool BuiltInNSIsAvailable() const override {
+    return audio_manager_->IsNoiseSuppressorSupported();
+  }
+
+  int32_t EnableBuiltInNS(bool enable) override {
+    RTC_CHECK(BuiltInNSIsAvailable()) << "HW NS is not available";
+    return input_.EnableBuiltInNS(enable);
+  }
+
  private:
   rtc::ThreadChecker thread_checker_;
 
   // Local copy of the audio layer set during construction of the
   // AudioDeviceModuleImpl instance. Read only value.
   const AudioDeviceModule::AudioLayer audio_layer_;
 
   // Non-owning raw pointer to AudioManager instance given to use at
   // construction. The real object is owned by AudioDeviceModuleImpl and the
   // life time is the same as that of the AudioDeviceModuleImpl, hence there
   // is no risk of reading a NULL pointer at any time in this class.
   AudioManager* const audio_manager_;
 
   OutputType output_;
 
   InputType input_;
 
   bool initialized_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_DEVICE_TEMPLATE_H_