99 lines
3.2 KiB
C++
Executable File
99 lines
3.2 KiB
C++
Executable File
/******************************************************************************\
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* Copyright (c) 2004-2009
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*
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* Author(s):
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* Volker Fischer
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#if !defined ( BUFFER_H__3B123453_4344_BB23945IUHF1912__INCLUDED_ )
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#define BUFFER_H__3B123453_4344_BB23945IUHF1912__INCLUDED_
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#include "util.h"
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#include "global.h"
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/* Definitions ****************************************************************/
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// time for fading effect for masking drop outs
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#define FADE_IN_OUT_TIME ( (double) 2 ) // ms
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#define FADE_IN_OUT_NUM_SAM ( (int) ( SYSTEM_SAMPLE_RATE * FADE_IN_OUT_TIME ) / 1000 )
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// for extrapolation a shorter time for fading
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#define FADE_IN_OUT_NUM_SAM_EXTRA 10 // samples
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/* Classes ********************************************************************/
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class CNetBuf
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{
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public:
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CNetBuf() {}
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virtual ~CNetBuf() {}
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void Init ( const int iNewBlockSize, const int iNewNumBlocks );
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int GetSize() { return iMemSize / iBlockSize; }
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bool Put ( CVector<double>& vecdData );
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bool Get ( CVector<double>& vecdData );
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protected:
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enum EBufState { BS_OK, BS_FULL, BS_EMPTY };
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enum EClearType { CT_PUT, CT_GET };
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void Clear ( const EClearType eClearType );
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int GetAvailSpace() const;
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int GetAvailData() const;
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void FadeInAudioDataBlock ( CVector<double>& vecdData );
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void FadeOutExtrapolateAudioDataBlock ( CVector<double>& vecdData,
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const double dExPDiff, const double dExPLastV );
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CVector<double> vecdMemory;
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int iMemSize;
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int iBlockSize;
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int iGetPos, iPutPos;
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EBufState eBufState;
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bool bFadeInNewPutData;
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int iNumSamFading;
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int iNumSamFadingExtra;
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// extrapolation parameters
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double dExPDiff;
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double dExPLastV;
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};
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// conversion buffer (very simple buffer)
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class CConvBuf
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{
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public:
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CConvBuf() {}
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virtual ~CConvBuf() {}
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void Init ( const int iNewMemSize );
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int GetSize() { return iMemSize; }
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bool Put ( const CVector<short>& vecsData );
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CVector<short> Get();
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protected:
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CVector<short> vecsMemory;
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int iMemSize;
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int iPutPos;
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};
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#endif /* !defined ( BUFFER_H__3B123453_4344_BB23945IUHF1912__INCLUDED_ ) */
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