h263dec.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. 
 *  
 * 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 __H263DEC_H__
#define __H263DEC_H__

/****************************************************************************
 *  Includes
 */
#include "mdpkt.h"

class DLLAccessBridge;

/****************************************************************************
 *  CH263Decoder
 */
class CH263Decoder
{
public:
    CH263Decoder(IUnknown* pContext = NULL);
    ~CH263Decoder();

    virtual HX_RESULT InitDecoder(HXxSize* pSize);
    UINT32 GetPreviousFrameType()   { return m_ulPreviousFrameType; }
    BOOL IsMoreFramesPending()	    { return m_bMoreFrames; }  
    HX_RESULT DecodeFrame(CMediaPacket* pFrameToDeocde, 
                          UINT8* pDecodedBuf,
                          HXxSize* pFrameDims = NULL);
    
    HX_RESULT CloseDecoder();

protected:
    virtual BOOL OS_BuildLibName(char *pLibName,
                                 UINT32 ulLibNameBufLen,
                                 INT32 nIndex=0);
    
    virtual BOOL LoadCodecFunctions();

    virtual HX_RESULT VerifyInput(CMediaPacket* pFrameToDecode,
                                  H263DecoderInParams* pInput) 
        {return HXR_OK;}

    UINT32			m_ulPreviousFrameType;

    FPTRANSFORMINIT		m_fpH263Init;
    FPTRANSFORMFREE		m_fpH263Free;
    FPTRANSFORMHXV10TOYUV	m_fpH263Transform;
    
    IUnknown*			m_pContext;
    DLLAccessBridge*		m_pCodecAccess;

    void*			m_pDecoderState;
    HXV10_INIT			m_InitParams;
    BOOL			m_bMoreFrames;
};

#endif // __H263DEC_H__