Remove AgcManager.

webrtc/modules/audio_processing/agc/agc_manager_direct.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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AGC_AGC_MANAGER_DIRECT_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_AGC_AGC_MANAGER_DIRECT_H_
 
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/modules/audio_processing/agc/agc.h"
 
 namespace webrtc {
 
 class AudioFrame;
 class DebugFile;
 class GainControl;
 
 // Callbacks that need to be injected into AgcManagerDirect to read and control
-// the volume values. They have different behavior if they are called from
-// AgcManager or AudioProcessing. This is done to remove the VoiceEngine
-// dependency in AgcManagerDirect.
+// the volume values. This is done to remove the VoiceEngine dependency in
+// AgcManagerDirect.
+// TODO(aluebs): Remove VolumeCallbacks.
 class VolumeCallbacks {
  public:
   virtual ~VolumeCallbacks() {}
   virtual void SetMicVolume(int volume) = 0;
   virtual int GetMicVolume() = 0;
 };
 
 // Direct interface to use AGC to set volume and compression values.
 // AudioProcessing uses this interface directly to integrate the callback-less
-// AGC. AgcManager delegates most of its calls here. See agc_manager.h for
-// undocumented methods.
+// AGC.
 //
 // This class is not thread-safe.
-class AgcManagerDirect {
+class AgcManagerDirect final {
  public:
   // AgcManagerDirect will configure GainControl internally. The user is
   // responsible for processing the audio using it after the call to Process.
   // The operating range of startup_min_level is [12, 255] and any input value
   // outside that range will be clamped.
   AgcManagerDirect(GainControl* gctrl,
                    VolumeCallbacks* volume_callbacks,
                    int startup_min_level);
   // Dependency injection for testing. Don't delete |agc| as the memory is owned
   // by the manager.
   AgcManagerDirect(Agc* agc,
                    GainControl* gctrl,
                    VolumeCallbacks* volume_callbacks,
                    int startup_min_level);
   ~AgcManagerDirect();
 
   int Initialize();
   void AnalyzePreProcess(int16_t* audio,
                          int num_channels,
                          size_t samples_per_channel);
   void Process(const int16_t* audio, size_t length, int sample_rate_hz);
 
+  // Call when the capture stream has been muted/unmuted. This causes the
+  // manager to disregard all incoming audio; chances are good it's background
+  // noise to which we'd like to avoid adapting.
+  void SetCaptureMuted(bool muted);
+  bool capture_muted() { return capture_muted_; }
+
+  float voice_probability();
+
+ private:
   // Sets a new microphone level, after first checking that it hasn't been
   // updated by the user, in which case no action is taken.
   void SetLevel(int new_level);
 
   // Set the maximum level the AGC is allowed to apply. Also updates the
   // maximum compression gain to compensate. The level must be at least
   // |kClippedLevelMin|.
   void SetMaxLevel(int level);
 
-  void SetCaptureMuted(bool muted);
-  bool capture_muted() { return capture_muted_; }
-
-  float voice_probability();
-
- private:
   int CheckVolumeAndReset();
   void UpdateGain();
   void UpdateCompressor();
 
   rtc::scoped_ptr<Agc> agc_;
   GainControl* gctrl_;
   VolumeCallbacks* volume_callbacks_;
 
   int frames_since_clipped_;
   int level_;
   int max_level_;
   int max_compression_gain_;
   int target_compression_;
   int compression_;
   float compression_accumulator_;
   bool capture_muted_;
   bool check_volume_on_next_process_;
   bool startup_;
   int startup_min_level_;
 
   rtc::scoped_ptr<DebugFile> file_preproc_;
   rtc::scoped_ptr<DebugFile> file_postproc_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(AgcManagerDirect);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AGC_AGC_MANAGER_DIRECT_H_