h263dec.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: h263dec.h,v 1.2.4.1 2004/07/09 01:56:48 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (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.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * 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 __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__