109 lines
4.6 KiB
C
109 lines
4.6 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: RCSL 1.0/RPSL 1.0
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*
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* Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
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*
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* The contents of this file, and the files included with this file, are
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* subject to the current version of the RealNetworks Public Source License
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* Version 1.0 (the "RPSL") available at
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* http://www.helixcommunity.org/content/rpsl unless you have licensed
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* the file under the RealNetworks Community Source License Version 1.0
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* (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
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* in which case the RCSL will apply. You may also obtain the license terms
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* directly from RealNetworks. You may not use this file except in
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* compliance with the RPSL or, if you have a valid RCSL with RealNetworks
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* applicable to this file, the RCSL. Please see the applicable RPSL or
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* RCSL for the rights, obligations and limitations governing use of the
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* contents of the file.
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*
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* This file is part of the Helix DNA Technology. RealNetworks is the
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* developer of the Original Code and owns the copyrights in the portions
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* it created.
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*
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* This file, and the files included with this file, is distributed and made
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* available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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*
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* Technology Compatibility Kit Test Suite(s) Location:
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* http://www.helixcommunity.org/content/tck
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*
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* Contributor(s):
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _MPADECOBJFIXPT_H_
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#define _MPADECOBJFIXPT_H_
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#include "mp3dec.h" /* public C API for new MP3 decoder */
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class CMpaDecObj
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{
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public:
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CMpaDecObj();
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~CMpaDecObj();
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///////////////////////////////////////////////////////////////////////////
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// Function: Init_n
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// Purpose: Initialize the mp3 decoder.
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// Parameters: pSync a pointer to a syncword
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// ulSize the size of the buffer pSync points to
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// bUseSize this tells the decoder to use the input frame
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// size on the decode instead of calculating
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// the frame size. This is necessary when
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// our formatted mp3 data (main_data_begin always
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// equal to 0).
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//
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// Returns: returns 1 on success, 0 on failure
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///////////////////////////////////////////////////////////////////////////
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int Init_n(unsigned char *pSync,
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unsigned long ulSize,
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unsigned char bUseSize=0);
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///////////////////////////////////////////////////////////////////////////
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// Function: DecodeFrame_v
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// Purpose: Decodes one mp3 frame
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// Parameters: pSource pointer to an mp3 frame (at a syncword)
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// pulSize size of the buffer pSource points to. It will
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// contain the number of mp3 bytes decoded upon
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// return.
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// pPCM pointer to a buffer to decode into
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// pulPCMSize size of the PCM buffer. It will contain the
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// number of PCM bytes prodced upon return.
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///////////////////////////////////////////////////////////////////////////
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void DecodeFrame_v(unsigned char *pSource,
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unsigned long *pulSize,
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unsigned char *pPCM,
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unsigned long *pulPCMSize);
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// overloaded new version that returns error code in errCode
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void DecodeFrame_v(unsigned char *pSource,
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unsigned long *pulSize,
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unsigned char *pPCM,
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unsigned long *pulPCMSize,
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int *errCode);
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void GetPCMInfo_v(unsigned long &ulSampRate,
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int &nChannels,
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int &nBitsPerSample);
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// return number of samples per frame, PER CHANNEL (renderer multiplies this result by nChannels)
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int GetSamplesPerFrame_n();
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void SetTrustPackets(unsigned char bTrust) { m_bTrustPackets = bTrust; }
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private:
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void * m_pDec; // generic void ptr
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void * m_pDecL1; // not implemented (could use old Xing mpadecl1.cpp)
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void * m_pDecL2; // not implemented (could use old Xing mpadecl2.cpp)
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HMP3Decoder m_pDecL3;
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MP3FrameInfo m_lastMP3FrameInfo;
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unsigned char m_bUseFrameSize;
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unsigned char m_bTrustPackets;
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};
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#endif /* _MPADECOBJFIXPT_H_ */
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