122 lines
2.9 KiB
C
122 lines
2.9 KiB
C
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/*==========================================================================
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*
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* Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
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*
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* File: agcva1.h
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* Content: Concrete class that implements CAutoGainControl
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*
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* History:
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* Date By Reason
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* ==== == ======
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* 12/01/99 pnewson Created it
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* 01/31/2000 pnewson re-add support for absence of DVCLIENTCONFIG_AUTOSENSITIVITY flag
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* 03/03/2000 rodtoll Updated to handle alternative gamevoice build.
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* 04/25/2000 pnewson Fix to improve responsiveness of AGC when volume level too low
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*
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***************************************************************************/
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#ifndef _AGCVA1_H_
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#define _AGCVA1_H_
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#define CAGCVA1_HISTOGRAM_BUCKETS 0x10
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#define CAGCVA1_AGCTICKSIZE 250
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class CAGCVA1 : public CAGCVA
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{
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protected:
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DWORD m_dwFlags;
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DWORD m_dwSensitivity;
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GUID m_guidCaptureDevice;
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LONG m_lCurVolume;
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LONG m_lCurStepSize;
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int m_iSampleRate;
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int m_iBitsPerSample;
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int m_iShiftConstantFast;
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int m_iShiftConstantSlow;
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int m_iEnvelopeSampleRate;
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int m_iCurSampleNum;
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int m_iCurEnvelopeValueFast;
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int m_iCurEnvelopeValueSlow;
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int m_iPrevEnvelopeSample;
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int m_iHangoverSamples;
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int m_iCurHangoverSamples;
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BYTE m_bPeak;
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/*
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BYTE m_bPeak127;
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BYTE m_bPeakLog;
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BYTE m_bZeroCrossings127;
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BYTE m_bZeroCrossingsLog;
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*/
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BOOL m_fVoiceDetectedNow;
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BOOL m_fVoiceHangoverActive;
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BOOL m_fVoiceDetectedThisFrame;
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BOOL m_fDeadZoneDetected;
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int m_iFeedbackSamples;
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int m_iPossibleFeedbackSamples;
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/*
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BOOL m_fClipping;
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int m_iClippingCount;
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*/
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int m_iClippingSampleCount;
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int m_iNonClippingSampleCount;
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int m_iDeadZoneSamples;
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int m_iDeadZoneSampleThreshold;
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BOOL m_fAGCLastFrameAdjusted;
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//DWORD m_dwAGCBelowThresholdTime;
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//DWORD m_dwFrameTime;
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float* m_rgfAGCHistory;
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DWORD m_dwHistorySamples;
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WCHAR m_wszRegPath[_MAX_PATH];
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/*
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DWORD m_rgdwPeakHistogram[CAGCVA1_HISTOGRAM_BUCKETS];
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DWORD m_rgdwZeroCrossingsHistogram[CAGCVA1_HISTOGRAM_BUCKETS];
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*/
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public:
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CAGCVA1()
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: m_guidCaptureDevice(GUID_NULL)
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, m_lCurVolume(0)
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, m_lCurStepSize(0)
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, m_bPeak(0)
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, m_fVoiceDetectedThisFrame(FALSE)
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, m_fVoiceDetectedNow(FALSE)
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//, m_fVoiceDetectedValid(FALSE)
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//, m_fAGCLastFrameAdjusted(FALSE)
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//, m_dwAGCBelowThresholdTime(0)
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//, m_dwFrameTime(0)
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{};
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virtual ~CAGCVA1() {};
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virtual HRESULT Init(
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const WCHAR *wszBasePath,
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DWORD dwFlags,
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GUID guidCaptureDevice,
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int iSampleRate,
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int iBitsPerSample,
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LONG* plInitVolume,
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DWORD dwSensitivity);
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virtual HRESULT Deinit();
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virtual HRESULT SetSensitivity(DWORD dwFlags, DWORD dwSensitivity);
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virtual HRESULT GetSensitivity(DWORD* pdwFlags, DWORD* pdwSensitivity);
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virtual HRESULT AnalyzeData(BYTE* pbAudioData, DWORD dwAudioDataSize/*, DWORD dwFrameTime*/);
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virtual HRESULT AGCResults(LONG lCurVolume, LONG* plNewVolume, BOOL fTransmitFrame);
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virtual HRESULT VAResults(BOOL* pfVoiceDetected);
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virtual HRESULT PeakResults(BYTE* pbPeakValue);
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};
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#endif
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