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/*
* Copyright (c) 2012 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_TEST_AGC_MANAGER_H_
#define WEBRTC_MODULES_AUDIO_PROCESSING_AGC_TEST_AGC_MANAGER_H_
#include "webrtc/modules/audio_processing/agc/agc_manager_direct.h"
#include "webrtc/system_wrappers/interface/scoped_ptr.h"
namespace webrtc {
class Agc;
class AudioProcessing;
class CriticalSectionWrapper;
class MediaCallback;
class PreprocCallback;
class VoEExternalMedia;
class VoEVolumeControl;
class VoiceEngine;
class VolumeCallbacks;
// Handles the interaction between VoiceEngine and the internal AGC. It hooks
// into the capture stream through VoiceEngine's external media interface and
// sends the audio to the AGC for analysis. It forwards requests for a capture
// volume change from the AGC to the VoiceEngine volume interface.
class AgcManager {
public:
explicit AgcManager(VoiceEngine* voe);
// Dependency injection for testing. Don't delete |agc| or |audioproc| as the
// memory is owned by the manager. If |media| or |volume| are non-fake
// reference counted classes, don't release them as this is handled by the
// manager.
AgcManager(VoEExternalMedia* media, VoEVolumeControl* volume, Agc* agc,
AudioProcessing* audioproc);
virtual ~AgcManager();
// When enabled, registers external media processing callbacks with
// VoiceEngine to hook into the capture stream. Disabling deregisters the
// callbacks.
virtual int Enable(bool enable);
virtual bool enabled() const { return enabled_; }
// Call when the capture device has changed. This will trigger a retrieval of
// the initial capture volume on the next audio frame.
virtual void CaptureDeviceChanged();
// 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.
virtual void SetCaptureMuted(bool muted);
virtual bool capture_muted() const { return direct_->capture_muted(); }
protected:
// Provide a default constructor for testing.
AgcManager();
private:
int DeregisterCallbacks();
int CheckVolumeAndReset();
VoEExternalMedia* media_;
scoped_ptr<VolumeCallbacks> volume_callbacks_;
scoped_ptr<CriticalSectionWrapper> crit_;
scoped_ptr<AudioProcessing> audioproc_;
scoped_ptr<AgcManagerDirect> direct_;
scoped_ptr<MediaCallback> media_callback_;
scoped_ptr<PreprocCallback> preproc_callback_;
bool enabled_;
bool initialized_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_AUDIO_PROCESSING_AGC_TEST_AGC_MANAGER_H_
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