libebml: ebml/EbmlStream.h Source File

00001 /****************************************************************************
00002 ** libebml : parse EBML files, see http://embl.sourceforge.net/
00003 **
00004 ** <file/class description>
00005 **
00006 ** Copyright (C) 2002-2010 Steve Lhomme.  All rights reserved.
00007 **
00008 ** This file is part of libebml.
00009 **
00010 ** This library is free software; you can redistribute it and/or
00011 ** modify it under the terms of the GNU Lesser General Public
00012 ** License as published by the Free Software Foundation; either
00013 ** version 2.1 of the License, or (at your option) any later version.
00014 ** 
00015 ** This library is distributed in the hope that it will be useful,
00016 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 ** Lesser General Public License for more details.
00019 ** 
00020 ** You should have received a copy of the GNU Lesser General Public
00021 ** License along with this library; if not, write to the Free Software
00022 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 **
00024 ** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
00025 **
00026 ** Contact license@matroska.org if any conditions of this licensing are
00027 ** not clear to you.
00028 **
00029 **********************************************************************/
00030 
00036 #ifndef LIBEBML_STREAM_H
00037 #define LIBEBML_STREAM_H
00038 
00039 #include "EbmlTypes.h"
00040 #include "IOCallback.h"
00041 #include "EbmlElement.h"
00042 
00043 START_LIBEBML_NAMESPACE
00044 
00049 class EBML_DLL_API EbmlStream {
00050         public:
00051                 EbmlStream(IOCallback & output);
00052                 ~EbmlStream();
00053         
00059                 EbmlElement * FindNextID(const EbmlCallbacks & ClassInfos, uint64 MaxDataSize);
00060 
00061                 EbmlElement * FindNextElement(const EbmlSemanticContext & Context, int & UpperLevel, uint64 MaxDataSize, bool AllowDummyElt, unsigned int MaxLowerLevel = 1);
00062 
00063                 inline IOCallback & I_O() {return Stream;}
00064         operator IOCallback &() {return Stream;}
00065 
00066 #if defined(EBML_STRICT_API)
00067     private:
00068 #else
00069     protected:
00070 #endif
00071                 IOCallback & Stream;
00072 };
00073 
00074 END_LIBEBML_NAMESPACE
00075 
00076 #endif // LIBEBML_STREAM_H