mp3decoder.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** 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. 
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 * 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, 
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 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
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 * Contributor(s): 
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 * ***** END LICENSE BLOCK ***** */ 

#ifndef MP3DECODER_H
#define MP3DECODER_H

// Forward declarations
class CMpaDecObj;

// Defines
#define DEFAULT_MP3_MAXSAMPLESOUT   2304
#define DEFAULT_MP3_NUMCHANNELS        2
#define DEFAULT_MP3_SAMPLERATE     44100
#define DEFAULT_MP3_DELAY              0
#define MAX_BITSTREAM_VERSION          0

class CMP3AudioDecoder : public IHXAudioDecoder
{
public:
    CMP3AudioDecoder();
    virtual ~CMP3AudioDecoder();

    // IUnknown methods
    STDMETHOD(QueryInterface)   (THIS_ REFIID riid, void** ppvObj);
    STDMETHOD_(ULONG32,AddRef)  (THIS);
    STDMETHOD_(ULONG32,Release) (THIS);

    // IHXAudioDecoder methods
    STDMETHOD(OpenDecoder)      (THIS_ UINT32 cfgType, const void* config, UINT32 nBytes);
    STDMETHOD(Reset)            (THIS);
    STDMETHOD(Conceal)          (THIS_ UINT32 nSamples);
    STDMETHOD(Decode)           (THIS_ const UCHAR* data, UINT32 nBytes, UINT32 &nBytesConsumed,
                                       INT16* samplesOut, UINT32& nSamplesOut, BOOL eof);
    STDMETHOD(GetMaxSamplesOut) (THIS_ UINT32& nSamples) CONSTMETHOD;
    STDMETHOD(GetNChannels)     (THIS_ UINT32& nChannels) CONSTMETHOD;
    STDMETHOD(GetSampleRate)    (THIS_ UINT32& sampleRate) CONSTMETHOD;
    STDMETHOD(GetDelay)         (THIS_ UINT32& nSamples) CONSTMETHOD;
protected:
    INT32       m_lRefCount;
    CMpaDecObj* m_pMpaDecObj;
    BOOL        m_bInitialized;
    UINT32      m_ulMaxSamplesOut;
    UINT32      m_ulNumChannels;
    UINT32      m_ulSampleRate;
    UINT32      m_ulDelay;
    BOOL        m_bUseSize;
};

#endif /* #ifndef MP3DECODER_H */