stream_hdlr.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: stream_hdlr.h,v 1.2.4.1 2004/11/24 18:02:52 acolwell 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 STREAM_HDLR_H
#define STREAM_HDLR_H

#include "hxcom.h"
#include "hxresult.h"
#include "hxccf.h"
#include "ihxpckts.h"
#include "chxmaplongtoobj.h"

#include "ogg_stream.h"

class COggCodecInfo;

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

    HX_RESULT Init(IUnknown* pContext);

    HX_RESULT SetStreamTypeCounts(UINT16 uNumAudioStreams, 
                                  UINT16 uNumVideoStreams);

    HX_RESULT AddCodecInfo(int serialNum, const COggCodecInfo* pCodecInfo);

    HX_RESULT CreateFileHeader(REF(IHXValues*) pFileHdr);
    HX_RESULT CreateStreamHeader(UINT16 i, REF(IHXValues*) pStreamHdr);

    HX_RESULT NextPacketStreamID(REF(UINT16) uStreamID);
    HX_RESULT GetNextPacket(REF(IHXPacket*) pPkt);

    BOOL EndOfStream(UINT16 uStreamID) const;

    COggStream* GetStream(int serialNum);
    HX_RESULT OnEndOfGroup();
    HX_RESULT OnEndOfFile();
    HX_RESULT OnSeek(UINT32 uRequestedTime);

    HX_RESULT GetStartTimestamp(COggTimestamp& timestamp);

    UINT16 StreamCount() const;

private:
    HX_RESULT setupStream(UINT32 uLower, UINT32 uUpper,
                          int serialNum, const COggCodecInfo* pCodecInfo);

    HX_RESULT findNextStreamID();

    UINT16 m_uNumAudioStreams;
    UINT16 m_uNumVideoStreams;
    IHXCommonClassFactory* m_pCCF; 

    COggStream* m_pStreams;
    COggStream m_nullStream;

    CHXMapLongToObj m_serialToStreamMap;

    BOOL m_bNextStreamIDSet;
    UINT16 m_uNextStreamID;
};

#endif  /* STREAM_HDLR_H */