squeezelite-esp32/components/spotify/cspot/bell/external/libhelix-mp3/mpadecobjfixpt.h

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#ifndef _MPADECOBJFIXPT_H_
#define _MPADECOBJFIXPT_H_

#include "mp3dec.h"		/* public C API for new MP3 decoder */

class CMpaDecObj
{
public:
    CMpaDecObj();
    ~CMpaDecObj();

    ///////////////////////////////////////////////////////////////////////////
    // Function:    Init_n
    // Purpose:     Initialize the mp3 decoder.
    // Parameters:  pSync       a pointer to a syncword
    //              ulSize      the size of the buffer pSync points to
    //              bUseSize    this tells the decoder to use the input frame
    //                          size on the decode instead of calculating
    //                          the frame size.  This is necessary when
    //                          our formatted mp3 data (main_data_begin always
    //                          equal to 0).
    //
    // Returns:     returns 1 on success, 0 on failure
    ///////////////////////////////////////////////////////////////////////////
    int     Init_n(unsigned char *pSync,
                   unsigned long ulSize,
                   unsigned char bUseSize=0);

    ///////////////////////////////////////////////////////////////////////////
    // Function:    DecodeFrame_v
    // Purpose:     Decodes one mp3 frame
    // Parameters:  pSource     pointer to an mp3 frame (at a syncword)
    //              pulSize     size of the buffer pSource points to.  It will
    //                          contain the number of mp3 bytes decoded upon
    //                          return.
    //              pPCM        pointer to a buffer to decode into
    //              pulPCMSize  size of the PCM buffer.  It will contain the
    //                          number of PCM bytes prodced upon return.
    ///////////////////////////////////////////////////////////////////////////
    void    DecodeFrame_v(unsigned char *pSource,
              	          unsigned long *pulSize,
                   	      unsigned char *pPCM,
                       	  unsigned long *pulPCMSize);

	// overloaded new version that returns error code in errCode
    void    DecodeFrame_v(unsigned char *pSource,
              	          unsigned long *pulSize,
                   	      unsigned char *pPCM,
                       	  unsigned long *pulPCMSize, 
						  int *errCode);

    void    GetPCMInfo_v(unsigned long &ulSampRate,
                         int &nChannels,
                         int &nBitsPerSample);

	// return number of samples per frame, PER CHANNEL (renderer multiplies this result by nChannels)
    int     GetSamplesPerFrame_n();

    void    SetTrustPackets(unsigned char bTrust) { m_bTrustPackets = bTrust; }

private:
	void *              m_pDec;		// generic void ptr

	void *				m_pDecL1;	// not implemented (could use old Xing mpadecl1.cpp)
	void *				m_pDecL2;	// not implemented (could use old Xing mpadecl2.cpp)
	HMP3Decoder			m_pDecL3;

	MP3FrameInfo		m_lastMP3FrameInfo;
	unsigned char		m_bUseFrameSize;
        unsigned char           m_bTrustPackets;
};

#endif	/* _MPADECOBJFIXPT_H_ */