audiosourcedecoder.h

Dream.exe soft source (Visual C++)

/******************************************************************************\
 * Technische Universitaet Darmstadt, Institut fuer Nachrichtentechnik
 * Copyright (c) 2001
 *
 * Author(s):
 *	Volker Fischer
 *
 * Description:
 *	See AudioSourceDecoder.cpp
 *
 ******************************************************************************
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later 
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
\******************************************************************************/

#if !defined(AUIDOSOURCEDECODER_H__3B0BA660_CABB2B_23E7A0D31912__INCLUDED_)
#define AUIDOSOURCEDECODER_H__3B0BA660_CABB2B_23E7A0D31912__INCLUDED_

#include "../GlobalDefinitions.h"
#include "../Parameter.h"
#include "../util/Modul.h"
#include "../util/CRC.h"
#include "../TextMessage.h"
#include "../resample/Resample.h"
#include "../datadecoding/DataDecoder.h"
#include "../util/Utilities.h"

#ifdef USE_FAAD2_LIBRARY
# include "neaacdec.h"
#endif
#ifdef USE_FAAC_LIBRARY
# include "faac.h"
#endif


/* Definitions ****************************************************************/
/* Forgetting factor for audio blocks in case CRC was wrong */
#define FORFACT_AUD_BL_BAD_CRC			((_REAL) 0.6)


/* Classes ********************************************************************/
class CAudioSourceEncoder : public CTransmitterModul<_SAMPLE, _BINARY>
{
public:
	CAudioSourceEncoder() : bUsingTextMessage(FALSE)
#ifdef USE_FAAC_LIBRARY
		, hEncoder(NULL)
#endif
		{}
	virtual ~CAudioSourceEncoder();

	void SetTextMessage(const string& strText);
	void ClearTextMessage();

	void SetPicFileName(const string& strFileName, const string& strFormat)
		{DataEncoder.GetSliShowEnc()->AddFileName(strFileName, strFormat);}
	void ClearPicFileNames()
		{DataEncoder.GetSliShowEnc()->ClearAllFileNames();}
	_BOOLEAN GetTransStat(string& strCPi, _REAL& rCPe)
		{return DataEncoder.GetSliShowEnc()->GetTransStat(strCPi, rCPe);}

protected:
	CTextMessageEncoder		TextMessage;
	_BOOLEAN				bUsingTextMessage;
	CDataEncoder			DataEncoder;
	int						iTotPacketSize;
	_BOOLEAN				bIsDataService;
	int						iTotNumBitsForUsage;

#ifdef USE_FAAC_LIBRARY
	faacEncHandle			hEncoder;
	faacEncConfigurationPtr CurEncFormat;

	unsigned long			lNumSampEncIn;
	unsigned long			lMaxBytesEncOut;
	unsigned long			lEncSamprate;
	CVector<_BYTE>			aac_crc_bits;
	CVector<_SAMPLE>		vecsEncInData;
	CMatrix<_BYTE>			audio_frame;
	CVector<int>			veciFrameLength;
	int						iNumAACFrames;
	int						iAudioPayloadLen;
	int						iNumHigherProtectedBytes;

	CAudioResample			ResampleObj;
	CVector<_REAL>			vecTempResBufIn;
	CVector<_REAL>			vecTempResBufOut;
#endif

	virtual void InitInternal(CParameter& TransmParam);
	virtual void ProcessDataInternal(CParameter& TransmParam);
};

class CAudioSourceDecoder : public CReceiverModul<_BINARY, _SAMPLE>
{
public:
	CAudioSourceDecoder();
	virtual ~CAudioSourceDecoder();

	int GetNumCorDecAudio();
	void SetReverbEffect(const _BOOLEAN bNER) {bUseReverbEffect = bNER;}
	_BOOLEAN GetReverbEffect() {return bUseReverbEffect;}

protected:
	enum EInitErr {ET_ALL, ET_AAC}; /* ET: Error type */
	class CInitErr 
	{
	public:
		CInitErr(EInitErr eNewErrType) : eErrType(eNewErrType) {}
		EInitErr eErrType;
	};

	/* General */
	_BOOLEAN			DoNotProcessData;
	_BOOLEAN			DoNotProcessAAC;

	/* Text message */
	_BOOLEAN			bTextMessageUsed;
	CTextMessageDecoder	TextMessage;
	CVector<_BINARY>	vecbiTextMessBuf;

	int					iTotalFrameSize;
	int					iNumCorDecAudio;

	_BOOLEAN			bUseReverbEffect;

#ifdef USE_FAAD2_LIBRARY
	/* AAC decoding */
	NeAACDecHandle		HandleAACDecoder;

	CAudioResample		ResampleObjL;
	CAudioResample		ResampleObjR;

	CAudioReverb		AudioRev;

	CVector<_REAL>		vecTempResBufInLeft;
	CVector<_REAL>		vecTempResBufInRight;
	CVector<_REAL>		vecTempResBufOutCurLeft;
	CVector<_REAL>		vecTempResBufOutCurRight;
	CVector<_REAL>		vecTempResBufOutOldLeft;
	CVector<_REAL>		vecTempResBufOutOldRight;

	CVector<_BYTE>		vecbyPrepAudioFrame;
	CVector<_BYTE>		aac_crc_bits;
	CMatrix<_BYTE>		audio_frame;

	CVector<int>		veciFrameLength;

	int					iNumAACFrames;
	int					iNumBorders;
	int					iResOutBlockSize;
	int					iNumHigherProtectedBytes;
	int					iMaxLenOneAudFrame;
	int					iLenDecOutPerChan;
	int					iBadBlockCount;
	int					iAudioPayloadLen;

	_BOOLEAN			bAudioWasOK;
#endif

	virtual void InitInternal(CParameter& ReceiverParam);
	virtual void ProcessDataInternal(CParameter& ReceiverParam);
};


#endif // !defined(AUIDOSOURCEDECODER_H__3B0BA660_CABB2B_23E7A0D31912__INCLUDED_)