6141e13873
BUG=314 Review URL: https://webrtc-codereview.appspot.com/1305004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@3792 4adac7df-926f-26a2-2b94-8c16560cd09d
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2011 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_VOICE_ENGINE_LEVEL_INDICATOR_H
|
|
#define WEBRTC_VOICE_ENGINE_LEVEL_INDICATOR_H
|
|
|
|
#include "typedefs.h"
|
|
#include "voice_engine_defines.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class AudioFrame;
|
|
class CriticalSectionWrapper;
|
|
namespace voe {
|
|
|
|
class AudioLevel
|
|
{
|
|
public:
|
|
AudioLevel();
|
|
virtual ~AudioLevel();
|
|
|
|
// Called on "API thread(s)" from APIs like VoEBase::CreateChannel(),
|
|
// VoEBase::StopSend(), VoEVolumeControl::GetSpeechOutputLevel().
|
|
int8_t Level() const;
|
|
int16_t LevelFullRange() const;
|
|
void Clear();
|
|
|
|
// Called on a native capture audio thread (platform dependent) from the
|
|
// AudioTransport::RecordedDataIsAvailable() callback.
|
|
// In Chrome, this method is called on the AudioInputDevice thread.
|
|
void ComputeLevel(const AudioFrame& audioFrame);
|
|
|
|
private:
|
|
enum { kUpdateFrequency = 10};
|
|
|
|
CriticalSectionWrapper& _critSect;
|
|
|
|
int16_t _absMax;
|
|
int16_t _count;
|
|
int8_t _currentLevel;
|
|
int16_t _currentLevelFullRange;
|
|
};
|
|
|
|
} // namespace voe
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // WEBRTC_VOICE_ENGINE_LEVEL_INDICATOR_H
|