libebml: fix the EBMLDummy ID reading and displaying
git-svn-id: https://matroska.svn.sourceforge.net/svnroot/matroska/trunk/libebml@251 a6f86f6d-0131-4f8e-9e7b-e335508773d5
This commit is contained in:
Steve Lhomme
parent
2ddda867cd
commit
9c1e708150
@ -1,6 +1,7 @@
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2010-05-22 robux4
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New 0.8.1 version:
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- fix the infinite/unknown size reading in EbmlElement::FindNextElement()
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- fix the EBMLDummy ID reading and displaying
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2010-04-30 robux4/mosu
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New 0.8.0 version:
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134
ebml/EbmlDummy.h
134
ebml/EbmlDummy.h
@ -1,65 +1,69 @@
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/****************************************************************************
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** libebml : parse EBML files, see http://embl.sourceforge.net/
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**
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** <file/class description>
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**
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** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
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**
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** This file is part of libebml.
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**
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** This library is free software; you can redistribute it and/or
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** modify it under the terms of the GNU Lesser General Public
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** License as published by the Free Software Foundation; either
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** version 2.1 of the License, or (at your option) any later version.
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**
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** This library is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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** Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public
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** License along with this library; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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**
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** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
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**
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** Contact license@matroska.org if any conditions of this licensing are
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** not clear to you.
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**
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**********************************************************************/
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/*!
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\file
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\version \$Id: EbmlDummy.h 639 2004-07-09 20:59:14Z mosu $
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\author Steve Lhomme <robux4 @ users.sf.net>
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*/
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#ifndef LIBEBML_DUMMY_H
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#define LIBEBML_DUMMY_H
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#include "EbmlBinary.h"
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START_LIBEBML_NAMESPACE
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class EBML_DLL_API EbmlDummy : public EbmlBinary {
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public:
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EbmlDummy() :DummyId(DummyRawId) {}
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EbmlDummy(const EbmlId & aId) :EbmlBinary(), DummyId(aId) {}
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EbmlDummy(const EbmlDummy & ElementToClone):EbmlBinary(ElementToClone), DummyId(ElementToClone.DummyId) {}
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bool IsDummy() const {return true;}
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bool IsDefaultValue() const {return true;}
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#if defined(EBML_STRICT_API)
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private:
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#else
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protected:
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#endif
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const EbmlId DummyId;
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static const EbmlId DummyRawId;
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EBML_CONCRETE_CLASS(EbmlDummy)
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};
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END_LIBEBML_NAMESPACE
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#endif // LIBEBML_DUMMY_H
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/****************************************************************************
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** libebml : parse EBML files, see http://embl.sourceforge.net/
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**
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** <file/class description>
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**
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** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
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**
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** This file is part of libebml.
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**
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** This library is free software; you can redistribute it and/or
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** modify it under the terms of the GNU Lesser General Public
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** License as published by the Free Software Foundation; either
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** version 2.1 of the License, or (at your option) any later version.
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**
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** This library is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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** Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public
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** License along with this library; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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**
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** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
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**
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** Contact license@matroska.org if any conditions of this licensing are
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** not clear to you.
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**
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**********************************************************************/
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/*!
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\file
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\version \$Id: EbmlDummy.h 639 2004-07-09 20:59:14Z mosu $
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\author Steve Lhomme <robux4 @ users.sf.net>
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*/
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#ifndef LIBEBML_DUMMY_H
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#define LIBEBML_DUMMY_H
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#include "EbmlBinary.h"
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START_LIBEBML_NAMESPACE
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class EBML_DLL_API EbmlDummy : public EbmlBinary {
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public:
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EbmlDummy() :DummyId(DummyRawId) {}
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EbmlDummy(const EbmlId & aId) :EbmlBinary(), DummyId(aId) {}
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EbmlDummy(const EbmlDummy & ElementToClone):EbmlBinary(ElementToClone), DummyId(ElementToClone.DummyId) {}
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bool IsDummy() const {return true;}
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bool IsDefaultValue() const {return true;}
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virtual operator const EbmlId &() const {
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return DummyId;
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}
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#if defined(EBML_STRICT_API)
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private:
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#else
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protected:
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#endif
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const EbmlId DummyId;
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static const EbmlId DummyRawId;
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EBML_CONCRETE_DUMMY_CLASS(EbmlDummy)
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};
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END_LIBEBML_NAMESPACE
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#endif // LIBEBML_DUMMY_H
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@ -1,484 +1,493 @@
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/****************************************************************************
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** libebml : parse EBML files, see http://embl.sourceforge.net/
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**
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** <file/class description>
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**
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** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
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**
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** This library is free software; you can redistribute it and/or
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** modify it under the terms of the GNU Lesser General Public
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** License as published by the Free Software Foundation; either
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** version 2.1 of the License, or (at your option) any later version.
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**
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** This library is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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** Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public
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** License along with this library; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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**
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** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
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**
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** Contact license@matroska.org if any conditions of this licensing are
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** not clear to you.
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**
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**********************************************************************/
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/*!
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\file
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\version \$Id: EbmlElement.h 1232 2005-10-15 15:56:52Z robux4 $
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\author Steve Lhomme <robux4 @ users.sf.net>
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*/
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#ifndef LIBEBML_ELEMENT_H
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#define LIBEBML_ELEMENT_H
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#include "EbmlTypes.h"
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#include "EbmlId.h"
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#include "IOCallback.h"
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START_LIBEBML_NAMESPACE
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/*!
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\brief The size of the EBML-coded length
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*/
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int EBML_DLL_API CodedSizeLength(uint64 Length, unsigned int SizeLength, bool bSizeIsFinite = true);
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/*!
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\brief The coded value of the EBML-coded length
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\note The size of OutBuffer must be 8 octets at least
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*/
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int EBML_DLL_API CodedValueLength(uint64 Length, int CodedSize, binary * OutBuffer);
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/*!
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\brief Read an EBML-coded value from a buffer
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\return the value read
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*/
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uint64 EBML_DLL_API ReadCodedSizeValue(const binary * InBuffer, uint32 & BufferSize, uint64 & SizeUnknown);
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/*!
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\brief The size of the EBML-coded signed length
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*/
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int EBML_DLL_API CodedSizeLengthSigned(int64 Length, unsigned int SizeLength);
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/*!
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\brief The coded value of the EBML-coded signed length
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\note the size of OutBuffer must be 8 octets at least
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*/
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int EBML_DLL_API CodedValueLengthSigned(int64 Length, int CodedSize, binary * OutBuffer);
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/*!
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\brief Read a signed EBML-coded value from a buffer
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\return the value read
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*/
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int64 EBML_DLL_API ReadCodedSizeSignedValue(const binary * InBuffer, uint32 & BufferSize, uint64 & SizeUnknown);
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class EbmlStream;
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class EbmlSemanticContext;
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class EbmlElement;
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extern const EbmlSemanticContext Context_EbmlGlobal;
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#define DEFINE_xxx_CONTEXT(x,global) \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, NULL, global, NULL); \
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#define DEFINE_xxx_MASTER(x,id,idl,parent,name,global) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, &Context_##parent, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
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x::x() :EbmlMaster(Context_##x) {}
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#define DEFINE_xxx_MASTER_CONS(x,id,idl,parent,name,global) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, &Context_##parent, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x);
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#define DEFINE_xxx_MASTER_ORPHAN(x,id,idl,name,global) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, NULL, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
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#define DEFINE_xxx_CLASS(x,id,idl,parent,name,global) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
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x::x() {}
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#define DEFINE_xxx_CLASS_CONS(x,id,idl,parent,name,global) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x);
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#define DEFINE_xxx_UINTEGER_DEF(x,id,idl,parent,name,global,defval) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
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x::x() :EbmlUInteger(defval) {}
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#define DEFINE_xxx_STRING_DEF(x,id,idl,parent,name,global,defval) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
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x::x() :EbmlString(defval) {}
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#define DEFINE_xxx_FLOAT_DEF(x,id,idl,parent,name,global,defval) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
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x::x() :EbmlFloat(defval) {}
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#define DEFINE_xxx_CLASS_GLOBAL(x,id,idl,name,global) \
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const EbmlId Id_##x (id, idl); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_EbmlGlobal); \
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#define DEFINE_xxx_CLASS_ORPHAN(x,id,idl,name,global) \
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const EbmlId Id_##x (id, idl); \
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const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, NULL, global, &EBML_INFO(x)); \
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const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
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#define DEFINE_EBML_CONTEXT(x) DEFINE_xxx_CONTEXT(x,*GetEbmlGlobal_Context)
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#define DEFINE_EBML_MASTER(x,id,idl,parent,name) DEFINE_xxx_MASTER(x,id,idl,parent,name,*GetEbmlGlobal_Context)
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#define DEFINE_EBML_MASTER_ORPHAN(x,id,idl,name) DEFINE_xxx_MASTER_ORPHAN(x,id,idl,name,*GetEbmlGlobal_Context)
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#define DEFINE_EBML_CLASS(x,id,idl,parent,name) DEFINE_xxx_CLASS(x,id,idl,parent,name,*GetEbmlGlobal_Context)
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#define DEFINE_EBML_CLASS_GLOBAL(x,id,idl,name) DEFINE_xxx_CLASS_GLOBAL(x,id,idl,name,*GetEbmlGlobal_Context)
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#define DEFINE_EBML_CLASS_ORPHAN(x,id,idl,name) DEFINE_xxx_CLASS_ORPHAN(x,id,idl,name,*GetEbmlGlobal_Context)
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#define DEFINE_EBML_UINTEGER_DEF(x,id,idl,parent,name,val) DEFINE_xxx_UINTEGER_DEF(x,id,idl,parent,name,*GetEbmlGlobal_Context,val)
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#define DEFINE_EBML_STRING_DEF(x,id,idl,parent,name,val) DEFINE_xxx_STRING_DEF(x,id,idl,parent,name,*GetEbmlGlobal_Context,val)
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#define DEFINE_EBML_BINARY_CONS(x,id,idl,parent,name) DEFINE_xxx_CLASS_CONS(x,id,idl,parent,name,*GetEbmlGlobal_Context)
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#define DEFINE_SEMANTIC_CONTEXT(x)
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#define DEFINE_START_SEMANTIC(x) static const EbmlSemantic ContextList_##x[] = {
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#define DEFINE_END_SEMANTIC(x) };
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#define DEFINE_SEMANTIC_ITEM(m,u,c) EbmlSemantic(m, u, EBML_INFO(c)),
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#define DECLARE_EBML_MASTER(x) class EBML_DLL_API x : public EbmlMaster { \
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public: \
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x();
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#define DECLARE_EBML_UINTEGER(x) class EBML_DLL_API x : public EbmlUInteger { \
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public: \
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x();
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#define DECLARE_EBML_STRING(x) class EBML_DLL_API x : public EbmlString { \
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public: \
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x();
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#define DECLARE_EBML_BINARY(x) class EBML_DLL_API x : public EbmlBinary { \
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public: \
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x();
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#if defined(EBML_STRICT_API)
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#define EBML_CONCRETE_CLASS(Type) \
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public: \
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virtual const EbmlSemanticContext &Context() const {return ClassInfos.GetContext();} \
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virtual const char *DebugName() const {return ClassInfos.GetName();} \
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virtual operator const EbmlId &() const {return ClassInfos.ClassId();} \
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virtual EbmlElement & CreateElement() const {return Create();} \
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virtual EbmlElement * Clone() const { return new Type(*this); } \
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static EbmlElement & Create() {return *(new Type);} \
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static const EbmlCallbacks & ClassInfo() {return ClassInfos;} \
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static const EbmlId & ClassId() {return ClassInfos.ClassId();} \
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private: \
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static const EbmlCallbacks ClassInfos; \
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#define EBML_INFO(ref) ref::ClassInfo()
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#define EBML_ID(ref) ref::ClassId()
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#define EBML_CLASS_SEMCONTEXT(ref) Context_##ref
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#define EBML_CLASS_CONTEXT(ref) ref::ClassInfo().GetContext()
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#define EBML_CLASS_CALLBACK(ref) ref::ClassInfo()
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#define EBML_CONTEXT(e) (e)->Context()
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#define EBML_NAME(e) (e)->DebugName()
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#define EBML_INFO_ID(cb) (cb).ClassId()
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#define EBML_INFO_NAME(cb) (cb).GetName()
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#define EBML_INFO_CREATE(cb) (cb).NewElement()
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#define EBML_INFO_CONTEXT(cb) (cb).GetContext()
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#define EBML_SEM_UNIQUE(s) (s).IsUnique()
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#define EBML_SEM_CONTEXT(s) ((const EbmlCallbacks &)(s)).GetContext()
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#define EBML_SEM_CREATE(s) (s).Create()
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#define EBML_CTX_SIZE(c) (c).GetSize()
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#define EBML_CTX_MASTER(c) (c).GetMaster()
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#define EBML_CTX_PARENT(c) (c).Parent()
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#define EBML_CTX_IDX(c,i) (c).GetSemantic(i)
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#define EBML_CTX_IDX_INFO(c,i) (const EbmlCallbacks &)((c).GetSemantic(i))
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#define EBML_CTX_IDX_ID(c,i) ((const EbmlCallbacks &)((c).GetSemantic(i))).ClassId()
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#else
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#define EBML_CONCRETE_CLASS(Type) \
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public: \
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virtual const EbmlCallbacks & Generic() const {return ClassInfos;} \
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virtual operator const EbmlId &() const {return ClassInfos.GlobalId;} \
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virtual EbmlElement & CreateElement() const {return Create();} \
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virtual EbmlElement * Clone() const { return new Type(*this); } \
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static EbmlElement & Create() {return *(new Type);} \
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static const EbmlCallbacks ClassInfos; \
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#define EBML_INFO(ref) ref::ClassInfos
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#define EBML_ID(ref) ref::ClassInfos.GlobalId
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#define EBML_CLASS_SEMCONTEXT(ref) Context_##ref
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#define EBML_CLASS_CONTEXT(ref) ref::ClassInfos.Context
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#define EBML_CLASS_CALLBACK(ref) ref::ClassInfos
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#define EBML_CONTEXT(e) (e)->Generic().Context
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#define EBML_NAME(e) (e)->Generic().DebugName
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#define EBML_INFO_ID(cb) (cb).GlobalId
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#define EBML_INFO_NAME(cb) (cb).DebugName
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#define EBML_INFO_CREATE(cb) (cb).Create()
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#define EBML_INFO_CONTEXT(cb) (cb).Context
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#define EBML_SEM_UNIQUE(s) (s).Unique
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#define EBML_SEM_CONTEXT(s) (s).GetCallbacks.Context
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#define EBML_SEM_CREATE(s) (s).Create()
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#define EBML_CTX_SIZE(c) (c).Size
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#define EBML_CTX_MASTER(c) (c).MasterElt
|
||||
#define EBML_CTX_PARENT(c) (c).UpTable
|
||||
#define EBML_CTX_IDX(c,i) (c).MyTable[(i)]
|
||||
#define EBML_CTX_IDX_INFO(c,i) (c).MyTable[(i)].GetCallbacks
|
||||
#define EBML_CTX_IDX_ID(c,i) (c).MyTable[(i)].GetCallbacks.GlobalId
|
||||
#endif
|
||||
|
||||
#if !defined(INVALID_FILEPOS_T)
|
||||
#define INVALID_FILEPOS_T 0
|
||||
#endif
|
||||
|
||||
#define EBML_DEF_CONS
|
||||
#define EBML_DEF_SEP
|
||||
#define EBML_DEF_PARAM
|
||||
#define EBML_DEF_BINARY_INIT
|
||||
#define EBML_DEF_BINARY_CTX(x)
|
||||
#define EBML_DEF_SINTEGER(x)
|
||||
#define EBML_DEF_BINARY(x)
|
||||
#define EBML_EXTRA_PARAM
|
||||
#define EBML_EXTRA_CALL
|
||||
#define EBML_EXTRA_DEF
|
||||
|
||||
// functions for generic handling of data (should be static to all classes)
|
||||
/*!
|
||||
\todo Handle default value
|
||||
*/
|
||||
class EBML_DLL_API EbmlCallbacks {
|
||||
public:
|
||||
EbmlCallbacks(EbmlElement & (*Creator)(), const EbmlId & aGlobalId, const char * aDebugName, const EbmlSemanticContext & aContext);
|
||||
|
||||
inline const EbmlId & ClassId() const { return GlobalId; }
|
||||
inline const EbmlSemanticContext & GetContext() const { return Context; }
|
||||
inline const char * GetName() const { return DebugName; }
|
||||
inline EbmlElement & NewElement() const { return Create(); }
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
EbmlElement & (*Create)();
|
||||
const EbmlId & GlobalId;
|
||||
const char * DebugName;
|
||||
const EbmlSemanticContext & Context;
|
||||
};
|
||||
|
||||
/*!
|
||||
\brief contains the semantic informations for a given level and all sublevels
|
||||
\todo move the ID in the element class
|
||||
*/
|
||||
class EBML_DLL_API EbmlSemantic {
|
||||
public:
|
||||
EbmlSemantic(bool aMandatory, bool aUnique, const EbmlCallbacks & aGetCallbacks)
|
||||
:Mandatory(aMandatory), Unique(aUnique), GetCallbacks(aGetCallbacks) {}
|
||||
|
||||
inline bool IsMandatory() const { return Mandatory; }
|
||||
inline bool IsUnique() const { return Unique; }
|
||||
inline EbmlElement & Create() const { return EBML_INFO_CREATE(GetCallbacks); }
|
||||
inline operator const EbmlCallbacks &() const { return GetCallbacks; }
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
bool Mandatory; ///< wether the element is mandatory in the context or not
|
||||
bool Unique;
|
||||
const EbmlCallbacks & GetCallbacks;
|
||||
};
|
||||
|
||||
typedef const class EbmlSemanticContext & (*_GetSemanticContext)();
|
||||
|
||||
/*!
|
||||
Context of the element
|
||||
\todo allow more than one parent ?
|
||||
*/
|
||||
class EBML_DLL_API EbmlSemanticContext {
|
||||
public:
|
||||
EbmlSemanticContext(size_t aSize,
|
||||
const EbmlSemantic *aMyTable,
|
||||
const EbmlSemanticContext *aUpTable,
|
||||
const _GetSemanticContext aGetGlobalContext,
|
||||
const EbmlCallbacks *aMasterElt)
|
||||
: GetGlobalContext(aGetGlobalContext), MyTable(aMyTable), Size(aSize),
|
||||
UpTable(aUpTable), MasterElt(aMasterElt) {}
|
||||
|
||||
bool operator!=(const EbmlSemanticContext & aElt) const {
|
||||
return ((Size != aElt.Size) || (MyTable != aElt.MyTable) ||
|
||||
(UpTable != aElt.UpTable) || (GetGlobalContext != aElt.GetGlobalContext) |
|
||||
(MasterElt != aElt.MasterElt));
|
||||
}
|
||||
|
||||
inline size_t GetSize() const { return Size; }
|
||||
inline const EbmlCallbacks* GetMaster() const { return MasterElt; }
|
||||
inline const EbmlSemanticContext* Parent() const { return UpTable; }
|
||||
const EbmlSemantic & GetSemantic(size_t i) const;
|
||||
|
||||
const _GetSemanticContext GetGlobalContext; ///< global elements supported at this level
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
const EbmlSemantic *MyTable; ///< First element in the table
|
||||
size_t Size; ///< number of elements in the table
|
||||
const EbmlSemanticContext *UpTable; ///< Parent element
|
||||
/// \todo replace with the global context directly
|
||||
const EbmlCallbacks *MasterElt;
|
||||
};
|
||||
|
||||
/*!
|
||||
\class EbmlElement
|
||||
\brief Hold basic informations about an EBML element (ID + length)
|
||||
*/
|
||||
class EBML_DLL_API EbmlElement {
|
||||
public:
|
||||
EbmlElement(uint64 aDefaultSize, bool bValueSet = false);
|
||||
virtual ~EbmlElement();
|
||||
|
||||
/// Set the minimum length that will be used to write the element size (-1 = optimal)
|
||||
void SetSizeLength(int NewSizeLength) {SizeLength = NewSizeLength;}
|
||||
int GetSizeLength() const {return SizeLength;}
|
||||
|
||||
static EbmlElement * FindNextElement(IOCallback & DataStream, const EbmlSemanticContext & Context, int & UpperLevel, uint64 MaxDataSize, bool AllowDummyElt, unsigned int MaxLowerLevel = 1);
|
||||
static EbmlElement * FindNextID(IOCallback & DataStream, const EbmlCallbacks & ClassInfos, const uint64 MaxDataSize);
|
||||
|
||||
/*!
|
||||
\brief find the next element with the same ID
|
||||
*/
|
||||
EbmlElement * FindNext(IOCallback & DataStream, const uint64 MaxDataSize);
|
||||
|
||||
EbmlElement * SkipData(EbmlStream & DataStream, const EbmlSemanticContext & Context, EbmlElement * TestReadElt = NULL, bool AllowDummyElt = false);
|
||||
|
||||
/*!
|
||||
\brief Give a copy of the element, all data inside the element is copied
|
||||
\return NULL if there is not enough memory
|
||||
*/
|
||||
virtual EbmlElement * Clone() const = 0;
|
||||
|
||||
virtual operator const EbmlId &() const = 0;
|
||||
#if defined(EBML_STRICT_API)
|
||||
virtual const char *DebugName() const = 0;
|
||||
virtual const EbmlSemanticContext &Context() const = 0;
|
||||
#else
|
||||
/// return the generic callback to monitor a derived class
|
||||
virtual const EbmlCallbacks & Generic() const = 0;
|
||||
#endif
|
||||
virtual EbmlElement & CreateElement() const = 0;
|
||||
|
||||
// by default only allow to set element as finite (override when needed)
|
||||
virtual bool SetSizeInfinite(bool bIsInfinite = true) {return !bIsInfinite;}
|
||||
|
||||
virtual bool ValidateSize() const = 0;
|
||||
|
||||
uint64 GetElementPosition() const {
|
||||
return ElementPosition;
|
||||
}
|
||||
|
||||
uint64 ElementSize(bool bWithDefault = false) const; /// return the size of the header+data, before writing
|
||||
|
||||
filepos_t Render(IOCallback & output, bool bWithDefault = false, bool bKeepPosition = false, bool bForceRender = false);
|
||||
|
||||
virtual filepos_t UpdateSize(bool bWithDefault = false, bool bForceRender = false) = 0; /// update the Size of the Data stored
|
||||
virtual filepos_t GetSize() const {return Size;} /// return the size of the data stored in the element, on reading
|
||||
|
||||
virtual filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) = 0;
|
||||
virtual void Read(EbmlStream & inDataStream, const EbmlSemanticContext & Context, int & UpperEltFound, EbmlElement * & FoundElt, bool AllowDummyElt = false, ScopeMode ReadFully = SCOPE_ALL_DATA);
|
||||
|
||||
bool IsLocked() const {return bLocked;}
|
||||
void Lock(bool bLock = true) { bLocked = bLock;}
|
||||
|
||||
/*!
|
||||
\brief default comparison for elements that can't be compared
|
||||
*/
|
||||
virtual bool IsSmallerThan(const EbmlElement *Cmp) const;
|
||||
static bool CompareElements(const EbmlElement *A, const EbmlElement *B);
|
||||
|
||||
virtual bool IsDummy() const {return false;}
|
||||
virtual bool IsMaster() const {return false;}
|
||||
|
||||
uint8 HeadSize() const {
|
||||
return EBML_ID_LENGTH((const EbmlId&)*this) + CodedSizeLength(Size, SizeLength, bSizeIsFinite);
|
||||
} /// return the size of the head, on reading/writing
|
||||
|
||||
/*!
|
||||
\brief Force the size of an element
|
||||
\warning only possible if the size is "undefined"
|
||||
*/
|
||||
bool ForceSize(uint64 NewSize);
|
||||
|
||||
filepos_t OverwriteHead(IOCallback & output, bool bKeepPosition = false);
|
||||
|
||||
/*!
|
||||
\brief void the content of the element (replace by EbmlVoid)
|
||||
*/
|
||||
uint32 VoidMe(IOCallback & output, bool bWithDefault = false);
|
||||
|
||||
bool DefaultISset() const {return DefaultIsSet;}
|
||||
virtual bool IsDefaultValue() const = 0;
|
||||
bool IsFiniteSize() const {return bSizeIsFinite;}
|
||||
|
||||
/*!
|
||||
\brief set the default size of an element
|
||||
*/
|
||||
virtual void SetDefaultSize(uint64 aDefaultSize) {DefaultSize = aDefaultSize;}
|
||||
|
||||
bool ValueIsSet() const {return bValueIsSet;}
|
||||
|
||||
inline uint64 GetEndPosition() const {
|
||||
return SizePosition + CodedSizeLength(Size, SizeLength, bSizeIsFinite) + Size;
|
||||
}
|
||||
|
||||
protected:
|
||||
/*!
|
||||
\brief find any element in the stream
|
||||
\return a DummyRawElement if the element is unknown or NULL if the element dummy is not allowed
|
||||
*/
|
||||
static EbmlElement *CreateElementUsingContext(const EbmlId & aID, const EbmlSemanticContext & Context, int & LowLevel, bool IsGlobalContext, bool bAllowDummy = false, unsigned int MaxLowerLevel = 1);
|
||||
|
||||
filepos_t RenderHead(IOCallback & output, bool bForceRender, bool bWithDefault = false, bool bKeepPosition = false);
|
||||
filepos_t MakeRenderHead(IOCallback & output, bool bKeepPosition);
|
||||
|
||||
/*!
|
||||
\brief prepare the data before writing them (in case it's not already done by default)
|
||||
*/
|
||||
virtual filepos_t RenderData(IOCallback & output, bool bForceRender, bool bWithDefault = false) = 0;
|
||||
|
||||
/*!
|
||||
\brief special constructor for cloning
|
||||
*/
|
||||
EbmlElement(const EbmlElement & ElementToClone);
|
||||
|
||||
inline uint64 GetDefaultSize() const {return DefaultSize;}
|
||||
inline void SetSize_(uint64 aSize) {Size = aSize;}
|
||||
inline void SetValueIsSet(bool Set = true) {bValueIsSet = Set;}
|
||||
inline void SetDefaultIsSet(bool Set = true) {DefaultIsSet = Set;}
|
||||
inline void SetSizeIsFinite(bool Set = true) {bSizeIsFinite = Set;}
|
||||
inline uint64 GetSizePosition() const {return SizePosition;}
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
uint64 Size; ///< the size of the data to write
|
||||
uint64 DefaultSize; ///< Minimum data size to fill on rendering (0 = optimal)
|
||||
int SizeLength; /// the minimum size on which the size will be written (0 = optimal)
|
||||
bool bSizeIsFinite;
|
||||
uint64 ElementPosition;
|
||||
uint64 SizePosition;
|
||||
bool bValueIsSet;
|
||||
bool DefaultIsSet;
|
||||
bool bLocked;
|
||||
};
|
||||
|
||||
END_LIBEBML_NAMESPACE
|
||||
|
||||
#endif // LIBEBML_ELEMENT_H
|
||||
/****************************************************************************
|
||||
** libebml : parse EBML files, see http://embl.sourceforge.net/
|
||||
**
|
||||
** <file/class description>
|
||||
**
|
||||
** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
|
||||
**
|
||||
** This library is free software; you can redistribute it and/or
|
||||
** modify it under the terms of the GNU Lesser General Public
|
||||
** License as published by the Free Software Foundation; either
|
||||
** version 2.1 of the License, or (at your option) any later version.
|
||||
**
|
||||
** This library is distributed in the hope that it will be useful,
|
||||
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
** Lesser General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU Lesser General Public
|
||||
** License along with this library; if not, write to the Free Software
|
||||
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
**
|
||||
** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
|
||||
**
|
||||
** Contact license@matroska.org if any conditions of this licensing are
|
||||
** not clear to you.
|
||||
**
|
||||
**********************************************************************/
|
||||
|
||||
/*!
|
||||
\file
|
||||
\version \$Id: EbmlElement.h 1232 2005-10-15 15:56:52Z robux4 $
|
||||
\author Steve Lhomme <robux4 @ users.sf.net>
|
||||
*/
|
||||
#ifndef LIBEBML_ELEMENT_H
|
||||
#define LIBEBML_ELEMENT_H
|
||||
|
||||
#include "EbmlTypes.h"
|
||||
#include "EbmlId.h"
|
||||
#include "IOCallback.h"
|
||||
|
||||
START_LIBEBML_NAMESPACE
|
||||
|
||||
/*!
|
||||
\brief The size of the EBML-coded length
|
||||
*/
|
||||
int EBML_DLL_API CodedSizeLength(uint64 Length, unsigned int SizeLength, bool bSizeIsFinite = true);
|
||||
|
||||
/*!
|
||||
\brief The coded value of the EBML-coded length
|
||||
\note The size of OutBuffer must be 8 octets at least
|
||||
*/
|
||||
int EBML_DLL_API CodedValueLength(uint64 Length, int CodedSize, binary * OutBuffer);
|
||||
|
||||
/*!
|
||||
\brief Read an EBML-coded value from a buffer
|
||||
\return the value read
|
||||
*/
|
||||
uint64 EBML_DLL_API ReadCodedSizeValue(const binary * InBuffer, uint32 & BufferSize, uint64 & SizeUnknown);
|
||||
|
||||
/*!
|
||||
\brief The size of the EBML-coded signed length
|
||||
*/
|
||||
int EBML_DLL_API CodedSizeLengthSigned(int64 Length, unsigned int SizeLength);
|
||||
|
||||
/*!
|
||||
\brief The coded value of the EBML-coded signed length
|
||||
\note the size of OutBuffer must be 8 octets at least
|
||||
*/
|
||||
int EBML_DLL_API CodedValueLengthSigned(int64 Length, int CodedSize, binary * OutBuffer);
|
||||
|
||||
/*!
|
||||
\brief Read a signed EBML-coded value from a buffer
|
||||
\return the value read
|
||||
*/
|
||||
int64 EBML_DLL_API ReadCodedSizeSignedValue(const binary * InBuffer, uint32 & BufferSize, uint64 & SizeUnknown);
|
||||
|
||||
class EbmlStream;
|
||||
class EbmlSemanticContext;
|
||||
class EbmlElement;
|
||||
|
||||
extern const EbmlSemanticContext Context_EbmlGlobal;
|
||||
|
||||
#define DEFINE_xxx_CONTEXT(x,global) \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, NULL, global, NULL); \
|
||||
|
||||
#define DEFINE_xxx_MASTER(x,id,idl,parent,name,global) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, &Context_##parent, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
|
||||
x::x() :EbmlMaster(Context_##x) {}
|
||||
|
||||
#define DEFINE_xxx_MASTER_CONS(x,id,idl,parent,name,global) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, &Context_##parent, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x);
|
||||
|
||||
#define DEFINE_xxx_MASTER_ORPHAN(x,id,idl,name,global) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(countof(ContextList_##x), ContextList_##x, NULL, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
|
||||
|
||||
#define DEFINE_xxx_CLASS(x,id,idl,parent,name,global) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
|
||||
x::x() {}
|
||||
|
||||
#define DEFINE_xxx_CLASS_CONS(x,id,idl,parent,name,global) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x);
|
||||
|
||||
#define DEFINE_xxx_UINTEGER_DEF(x,id,idl,parent,name,global,defval) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
|
||||
x::x() :EbmlUInteger(defval) {}
|
||||
|
||||
#define DEFINE_xxx_STRING_DEF(x,id,idl,parent,name,global,defval) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
|
||||
x::x() :EbmlString(defval) {}
|
||||
|
||||
#define DEFINE_xxx_FLOAT_DEF(x,id,idl,parent,name,global,defval) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, &Context_##parent, global, &EBML_INFO(x)); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_##x); \
|
||||
x::x() :EbmlFloat(defval) {}
|
||||
|
||||
#define DEFINE_xxx_CLASS_GLOBAL(x,id,idl,name,global) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlCallbacks x::ClassInfos(x::Create, Id_##x, name, Context_EbmlGlobal); \
|
||||
|
||||
#define DEFINE_xxx_CLASS_ORPHAN(x,id,idl,name,global) \
|
||||
const EbmlId Id_##x (id, idl); \
|
||||
const EbmlSemanticContext Context_##x = EbmlSemanticContext(0, NULL, NULL, global, NULL); \
|
||||
|
||||
#define DEFINE_EBML_CONTEXT(x) DEFINE_xxx_CONTEXT(x,*GetEbmlGlobal_Context)
|
||||
#define DEFINE_EBML_MASTER(x,id,idl,parent,name) DEFINE_xxx_MASTER(x,id,idl,parent,name,*GetEbmlGlobal_Context)
|
||||
#define DEFINE_EBML_MASTER_ORPHAN(x,id,idl,name) DEFINE_xxx_MASTER_ORPHAN(x,id,idl,name,*GetEbmlGlobal_Context)
|
||||
#define DEFINE_EBML_CLASS(x,id,idl,parent,name) DEFINE_xxx_CLASS(x,id,idl,parent,name,*GetEbmlGlobal_Context)
|
||||
#define DEFINE_EBML_CLASS_GLOBAL(x,id,idl,name) DEFINE_xxx_CLASS_GLOBAL(x,id,idl,name,*GetEbmlGlobal_Context)
|
||||
#define DEFINE_EBML_CLASS_ORPHAN(x,id,idl,name) DEFINE_xxx_CLASS_ORPHAN(x,id,idl,name,*GetEbmlGlobal_Context)
|
||||
#define DEFINE_EBML_UINTEGER_DEF(x,id,idl,parent,name,val) DEFINE_xxx_UINTEGER_DEF(x,id,idl,parent,name,*GetEbmlGlobal_Context,val)
|
||||
#define DEFINE_EBML_STRING_DEF(x,id,idl,parent,name,val) DEFINE_xxx_STRING_DEF(x,id,idl,parent,name,*GetEbmlGlobal_Context,val)
|
||||
#define DEFINE_EBML_BINARY_CONS(x,id,idl,parent,name) DEFINE_xxx_CLASS_CONS(x,id,idl,parent,name,*GetEbmlGlobal_Context)
|
||||
|
||||
#define DEFINE_SEMANTIC_CONTEXT(x)
|
||||
#define DEFINE_START_SEMANTIC(x) static const EbmlSemantic ContextList_##x[] = {
|
||||
#define DEFINE_END_SEMANTIC(x) };
|
||||
#define DEFINE_SEMANTIC_ITEM(m,u,c) EbmlSemantic(m, u, EBML_INFO(c)),
|
||||
|
||||
#define DECLARE_EBML_MASTER(x) class EBML_DLL_API x : public EbmlMaster { \
|
||||
public: \
|
||||
x();
|
||||
#define DECLARE_EBML_UINTEGER(x) class EBML_DLL_API x : public EbmlUInteger { \
|
||||
public: \
|
||||
x();
|
||||
#define DECLARE_EBML_STRING(x) class EBML_DLL_API x : public EbmlString { \
|
||||
public: \
|
||||
x();
|
||||
#define DECLARE_EBML_BINARY(x) class EBML_DLL_API x : public EbmlBinary { \
|
||||
public: \
|
||||
x();
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
#define EBML_CONCRETE_CLASS(Type) \
|
||||
public: \
|
||||
virtual const EbmlSemanticContext &Context() const {return ClassInfos.GetContext();} \
|
||||
virtual const char *DebugName() const {return ClassInfos.GetName();} \
|
||||
virtual operator const EbmlId &() const {return ClassInfos.ClassId();} \
|
||||
virtual EbmlElement & CreateElement() const {return Create();} \
|
||||
virtual EbmlElement * Clone() const { return new Type(*this); } \
|
||||
static EbmlElement & Create() {return *(new Type);} \
|
||||
static const EbmlCallbacks & ClassInfo() {return ClassInfos;} \
|
||||
static const EbmlId & ClassId() {return ClassInfos.ClassId();} \
|
||||
private: \
|
||||
static const EbmlCallbacks ClassInfos; \
|
||||
|
||||
#define EBML_CONCRETE_DUMMY_CLASS(Type) \
|
||||
public: \
|
||||
virtual const EbmlSemanticContext &Context() const {return *static_cast<EbmlSemanticContext*>(NULL);} \
|
||||
virtual const char *DebugName() const {return "DummyElement";} \
|
||||
virtual operator const EbmlId &(); \
|
||||
virtual EbmlElement & CreateElement() const {return Create();} \
|
||||
virtual EbmlElement * Clone() const { return new Type(*this); } \
|
||||
static EbmlElement & Create() {return *(new Type);} \
|
||||
static const EbmlId & ClassId(); \
|
||||
|
||||
|
||||
#define EBML_INFO(ref) ref::ClassInfo()
|
||||
#define EBML_ID(ref) ref::ClassId()
|
||||
#define EBML_CLASS_SEMCONTEXT(ref) Context_##ref
|
||||
#define EBML_CLASS_CONTEXT(ref) ref::ClassInfo().GetContext()
|
||||
#define EBML_CLASS_CALLBACK(ref) ref::ClassInfo()
|
||||
#define EBML_CONTEXT(e) (e)->Context()
|
||||
#define EBML_NAME(e) (e)->DebugName()
|
||||
|
||||
#define EBML_INFO_ID(cb) (cb).ClassId()
|
||||
#define EBML_INFO_NAME(cb) (cb).GetName()
|
||||
#define EBML_INFO_CREATE(cb) (cb).NewElement()
|
||||
#define EBML_INFO_CONTEXT(cb) (cb).GetContext()
|
||||
|
||||
#define EBML_SEM_UNIQUE(s) (s).IsUnique()
|
||||
#define EBML_SEM_CONTEXT(s) ((const EbmlCallbacks &)(s)).GetContext()
|
||||
#define EBML_SEM_CREATE(s) (s).Create()
|
||||
|
||||
#define EBML_CTX_SIZE(c) (c).GetSize()
|
||||
#define EBML_CTX_MASTER(c) (c).GetMaster()
|
||||
#define EBML_CTX_PARENT(c) (c).Parent()
|
||||
#define EBML_CTX_IDX(c,i) (c).GetSemantic(i)
|
||||
#define EBML_CTX_IDX_INFO(c,i) (const EbmlCallbacks &)((c).GetSemantic(i))
|
||||
#define EBML_CTX_IDX_ID(c,i) ((const EbmlCallbacks &)((c).GetSemantic(i))).ClassId()
|
||||
#else
|
||||
#define EBML_CONCRETE_CLASS(Type) \
|
||||
public: \
|
||||
virtual const EbmlCallbacks & Generic() const {return ClassInfos;} \
|
||||
virtual operator const EbmlId &() const {return ClassInfos.GlobalId;} \
|
||||
virtual EbmlElement & CreateElement() const {return Create();} \
|
||||
virtual EbmlElement * Clone() const { return new Type(*this); } \
|
||||
static EbmlElement & Create() {return *(new Type);} \
|
||||
static const EbmlCallbacks ClassInfos; \
|
||||
|
||||
#define EBML_INFO(ref) ref::ClassInfos
|
||||
#define EBML_ID(ref) ref::ClassInfos.GlobalId
|
||||
#define EBML_CLASS_SEMCONTEXT(ref) Context_##ref
|
||||
#define EBML_CLASS_CONTEXT(ref) ref::ClassInfos.Context
|
||||
#define EBML_CLASS_CALLBACK(ref) ref::ClassInfos
|
||||
#define EBML_CONTEXT(e) (e)->Generic().Context
|
||||
#define EBML_NAME(e) (e)->Generic().DebugName
|
||||
|
||||
#define EBML_INFO_ID(cb) (cb).GlobalId
|
||||
#define EBML_INFO_NAME(cb) (cb).DebugName
|
||||
#define EBML_INFO_CREATE(cb) (cb).Create()
|
||||
#define EBML_INFO_CONTEXT(cb) (cb).Context
|
||||
|
||||
#define EBML_SEM_UNIQUE(s) (s).Unique
|
||||
#define EBML_SEM_CONTEXT(s) (s).GetCallbacks.Context
|
||||
#define EBML_SEM_CREATE(s) (s).Create()
|
||||
|
||||
#define EBML_CTX_SIZE(c) (c).Size
|
||||
#define EBML_CTX_MASTER(c) (c).MasterElt
|
||||
#define EBML_CTX_PARENT(c) (c).UpTable
|
||||
#define EBML_CTX_IDX(c,i) (c).MyTable[(i)]
|
||||
#define EBML_CTX_IDX_INFO(c,i) (c).MyTable[(i)].GetCallbacks
|
||||
#define EBML_CTX_IDX_ID(c,i) (c).MyTable[(i)].GetCallbacks.GlobalId
|
||||
#endif
|
||||
|
||||
#if !defined(INVALID_FILEPOS_T)
|
||||
#define INVALID_FILEPOS_T 0
|
||||
#endif
|
||||
|
||||
#define EBML_DEF_CONS
|
||||
#define EBML_DEF_SEP
|
||||
#define EBML_DEF_PARAM
|
||||
#define EBML_DEF_BINARY_INIT
|
||||
#define EBML_DEF_BINARY_CTX(x)
|
||||
#define EBML_DEF_SINTEGER(x)
|
||||
#define EBML_DEF_BINARY(x)
|
||||
#define EBML_EXTRA_PARAM
|
||||
#define EBML_EXTRA_CALL
|
||||
#define EBML_EXTRA_DEF
|
||||
|
||||
// functions for generic handling of data (should be static to all classes)
|
||||
/*!
|
||||
\todo Handle default value
|
||||
*/
|
||||
class EBML_DLL_API EbmlCallbacks {
|
||||
public:
|
||||
EbmlCallbacks(EbmlElement & (*Creator)(), const EbmlId & aGlobalId, const char * aDebugName, const EbmlSemanticContext & aContext);
|
||||
|
||||
inline const EbmlId & ClassId() const { return GlobalId; }
|
||||
inline const EbmlSemanticContext & GetContext() const { return Context; }
|
||||
inline const char * GetName() const { return DebugName; }
|
||||
inline EbmlElement & NewElement() const { return Create(); }
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
EbmlElement & (*Create)();
|
||||
const EbmlId & GlobalId;
|
||||
const char * DebugName;
|
||||
const EbmlSemanticContext & Context;
|
||||
};
|
||||
|
||||
/*!
|
||||
\brief contains the semantic informations for a given level and all sublevels
|
||||
\todo move the ID in the element class
|
||||
*/
|
||||
class EBML_DLL_API EbmlSemantic {
|
||||
public:
|
||||
EbmlSemantic(bool aMandatory, bool aUnique, const EbmlCallbacks & aGetCallbacks)
|
||||
:Mandatory(aMandatory), Unique(aUnique), GetCallbacks(aGetCallbacks) {}
|
||||
|
||||
inline bool IsMandatory() const { return Mandatory; }
|
||||
inline bool IsUnique() const { return Unique; }
|
||||
inline EbmlElement & Create() const { return EBML_INFO_CREATE(GetCallbacks); }
|
||||
inline operator const EbmlCallbacks &() const { return GetCallbacks; }
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
bool Mandatory; ///< wether the element is mandatory in the context or not
|
||||
bool Unique;
|
||||
const EbmlCallbacks & GetCallbacks;
|
||||
};
|
||||
|
||||
typedef const class EbmlSemanticContext & (*_GetSemanticContext)();
|
||||
|
||||
/*!
|
||||
Context of the element
|
||||
\todo allow more than one parent ?
|
||||
*/
|
||||
class EBML_DLL_API EbmlSemanticContext {
|
||||
public:
|
||||
EbmlSemanticContext(size_t aSize,
|
||||
const EbmlSemantic *aMyTable,
|
||||
const EbmlSemanticContext *aUpTable,
|
||||
const _GetSemanticContext aGetGlobalContext,
|
||||
const EbmlCallbacks *aMasterElt)
|
||||
: GetGlobalContext(aGetGlobalContext), MyTable(aMyTable), Size(aSize),
|
||||
UpTable(aUpTable), MasterElt(aMasterElt) {}
|
||||
|
||||
bool operator!=(const EbmlSemanticContext & aElt) const {
|
||||
return ((Size != aElt.Size) || (MyTable != aElt.MyTable) ||
|
||||
(UpTable != aElt.UpTable) || (GetGlobalContext != aElt.GetGlobalContext) |
|
||||
(MasterElt != aElt.MasterElt));
|
||||
}
|
||||
|
||||
inline size_t GetSize() const { return Size; }
|
||||
inline const EbmlCallbacks* GetMaster() const { return MasterElt; }
|
||||
inline const EbmlSemanticContext* Parent() const { return UpTable; }
|
||||
const EbmlSemantic & GetSemantic(size_t i) const;
|
||||
|
||||
const _GetSemanticContext GetGlobalContext; ///< global elements supported at this level
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
const EbmlSemantic *MyTable; ///< First element in the table
|
||||
size_t Size; ///< number of elements in the table
|
||||
const EbmlSemanticContext *UpTable; ///< Parent element
|
||||
/// \todo replace with the global context directly
|
||||
const EbmlCallbacks *MasterElt;
|
||||
};
|
||||
|
||||
/*!
|
||||
\class EbmlElement
|
||||
\brief Hold basic informations about an EBML element (ID + length)
|
||||
*/
|
||||
class EBML_DLL_API EbmlElement {
|
||||
public:
|
||||
EbmlElement(uint64 aDefaultSize, bool bValueSet = false);
|
||||
virtual ~EbmlElement();
|
||||
|
||||
/// Set the minimum length that will be used to write the element size (-1 = optimal)
|
||||
void SetSizeLength(int NewSizeLength) {SizeLength = NewSizeLength;}
|
||||
int GetSizeLength() const {return SizeLength;}
|
||||
|
||||
static EbmlElement * FindNextElement(IOCallback & DataStream, const EbmlSemanticContext & Context, int & UpperLevel, uint64 MaxDataSize, bool AllowDummyElt, unsigned int MaxLowerLevel = 1);
|
||||
static EbmlElement * FindNextID(IOCallback & DataStream, const EbmlCallbacks & ClassInfos, const uint64 MaxDataSize);
|
||||
|
||||
/*!
|
||||
\brief find the next element with the same ID
|
||||
*/
|
||||
EbmlElement * FindNext(IOCallback & DataStream, const uint64 MaxDataSize);
|
||||
|
||||
EbmlElement * SkipData(EbmlStream & DataStream, const EbmlSemanticContext & Context, EbmlElement * TestReadElt = NULL, bool AllowDummyElt = false);
|
||||
|
||||
/*!
|
||||
\brief Give a copy of the element, all data inside the element is copied
|
||||
\return NULL if there is not enough memory
|
||||
*/
|
||||
virtual EbmlElement * Clone() const = 0;
|
||||
|
||||
virtual operator const EbmlId &() const = 0;
|
||||
#if defined(EBML_STRICT_API)
|
||||
virtual const char *DebugName() const = 0;
|
||||
virtual const EbmlSemanticContext &Context() const = 0;
|
||||
#else
|
||||
/// return the generic callback to monitor a derived class
|
||||
virtual const EbmlCallbacks & Generic() const = 0;
|
||||
#endif
|
||||
virtual EbmlElement & CreateElement() const = 0;
|
||||
|
||||
// by default only allow to set element as finite (override when needed)
|
||||
virtual bool SetSizeInfinite(bool bIsInfinite = true) {return !bIsInfinite;}
|
||||
|
||||
virtual bool ValidateSize() const = 0;
|
||||
|
||||
uint64 GetElementPosition() const {
|
||||
return ElementPosition;
|
||||
}
|
||||
|
||||
uint64 ElementSize(bool bWithDefault = false) const; /// return the size of the header+data, before writing
|
||||
|
||||
filepos_t Render(IOCallback & output, bool bWithDefault = false, bool bKeepPosition = false, bool bForceRender = false);
|
||||
|
||||
virtual filepos_t UpdateSize(bool bWithDefault = false, bool bForceRender = false) = 0; /// update the Size of the Data stored
|
||||
virtual filepos_t GetSize() const {return Size;} /// return the size of the data stored in the element, on reading
|
||||
|
||||
virtual filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) = 0;
|
||||
virtual void Read(EbmlStream & inDataStream, const EbmlSemanticContext & Context, int & UpperEltFound, EbmlElement * & FoundElt, bool AllowDummyElt = false, ScopeMode ReadFully = SCOPE_ALL_DATA);
|
||||
|
||||
bool IsLocked() const {return bLocked;}
|
||||
void Lock(bool bLock = true) { bLocked = bLock;}
|
||||
|
||||
/*!
|
||||
\brief default comparison for elements that can't be compared
|
||||
*/
|
||||
virtual bool IsSmallerThan(const EbmlElement *Cmp) const;
|
||||
static bool CompareElements(const EbmlElement *A, const EbmlElement *B);
|
||||
|
||||
virtual bool IsDummy() const {return false;}
|
||||
virtual bool IsMaster() const {return false;}
|
||||
|
||||
uint8 HeadSize() const {
|
||||
return EBML_ID_LENGTH((const EbmlId&)*this) + CodedSizeLength(Size, SizeLength, bSizeIsFinite);
|
||||
} /// return the size of the head, on reading/writing
|
||||
|
||||
/*!
|
||||
\brief Force the size of an element
|
||||
\warning only possible if the size is "undefined"
|
||||
*/
|
||||
bool ForceSize(uint64 NewSize);
|
||||
|
||||
filepos_t OverwriteHead(IOCallback & output, bool bKeepPosition = false);
|
||||
|
||||
/*!
|
||||
\brief void the content of the element (replace by EbmlVoid)
|
||||
*/
|
||||
uint32 VoidMe(IOCallback & output, bool bWithDefault = false);
|
||||
|
||||
bool DefaultISset() const {return DefaultIsSet;}
|
||||
virtual bool IsDefaultValue() const = 0;
|
||||
bool IsFiniteSize() const {return bSizeIsFinite;}
|
||||
|
||||
/*!
|
||||
\brief set the default size of an element
|
||||
*/
|
||||
virtual void SetDefaultSize(uint64 aDefaultSize) {DefaultSize = aDefaultSize;}
|
||||
|
||||
bool ValueIsSet() const {return bValueIsSet;}
|
||||
|
||||
inline uint64 GetEndPosition() const {
|
||||
return SizePosition + CodedSizeLength(Size, SizeLength, bSizeIsFinite) + Size;
|
||||
}
|
||||
|
||||
protected:
|
||||
/*!
|
||||
\brief find any element in the stream
|
||||
\return a DummyRawElement if the element is unknown or NULL if the element dummy is not allowed
|
||||
*/
|
||||
static EbmlElement *CreateElementUsingContext(const EbmlId & aID, const EbmlSemanticContext & Context, int & LowLevel, bool IsGlobalContext, bool bAllowDummy = false, unsigned int MaxLowerLevel = 1);
|
||||
|
||||
filepos_t RenderHead(IOCallback & output, bool bForceRender, bool bWithDefault = false, bool bKeepPosition = false);
|
||||
filepos_t MakeRenderHead(IOCallback & output, bool bKeepPosition);
|
||||
|
||||
/*!
|
||||
\brief prepare the data before writing them (in case it's not already done by default)
|
||||
*/
|
||||
virtual filepos_t RenderData(IOCallback & output, bool bForceRender, bool bWithDefault = false) = 0;
|
||||
|
||||
/*!
|
||||
\brief special constructor for cloning
|
||||
*/
|
||||
EbmlElement(const EbmlElement & ElementToClone);
|
||||
|
||||
inline uint64 GetDefaultSize() const {return DefaultSize;}
|
||||
inline void SetSize_(uint64 aSize) {Size = aSize;}
|
||||
inline void SetValueIsSet(bool Set = true) {bValueIsSet = Set;}
|
||||
inline void SetDefaultIsSet(bool Set = true) {DefaultIsSet = Set;}
|
||||
inline void SetSizeIsFinite(bool Set = true) {bSizeIsFinite = Set;}
|
||||
inline uint64 GetSizePosition() const {return SizePosition;}
|
||||
|
||||
#if defined(EBML_STRICT_API)
|
||||
private:
|
||||
#endif
|
||||
uint64 Size; ///< the size of the data to write
|
||||
uint64 DefaultSize; ///< Minimum data size to fill on rendering (0 = optimal)
|
||||
int SizeLength; /// the minimum size on which the size will be written (0 = optimal)
|
||||
bool bSizeIsFinite;
|
||||
uint64 ElementPosition;
|
||||
uint64 SizePosition;
|
||||
bool bValueIsSet;
|
||||
bool DefaultIsSet;
|
||||
bool bLocked;
|
||||
};
|
||||
|
||||
END_LIBEBML_NAMESPACE
|
||||
|
||||
#endif // LIBEBML_ELEMENT_H
|
||||
|
||||
@ -1,56 +1,56 @@
|
||||
/****************************************************************************
|
||||
** libebml : parse EBML files, see http://embl.sourceforge.net/
|
||||
**
|
||||
** <file/class description>
|
||||
**
|
||||
** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
|
||||
**
|
||||
** This file is part of libebml.
|
||||
**
|
||||
** This library is free software; you can redistribute it and/or
|
||||
** modify it under the terms of the GNU Lesser General Public
|
||||
** License as published by the Free Software Foundation; either
|
||||
** version 2.1 of the License, or (at your option) any later version.
|
||||
**
|
||||
** This library is distributed in the hope that it will be useful,
|
||||
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
** Lesser General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU Lesser General Public
|
||||
** License along with this library; if not, write to the Free Software
|
||||
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
**
|
||||
** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
|
||||
**
|
||||
** Contact license@matroska.org if any conditions of this licensing are
|
||||
** not clear to you.
|
||||
**
|
||||
**********************************************************************/
|
||||
|
||||
/*!
|
||||
\file
|
||||
\version \$Id: EbmlVersion.h 1326 2009-08-23 00:47:52Z robux4 $
|
||||
\author Steve Lhomme <robux4 @ users.sf.net>
|
||||
*/
|
||||
#ifndef LIBEBML_VERSION_H
|
||||
#define LIBEBML_VERSION_H
|
||||
|
||||
#include <string>
|
||||
|
||||
#include "EbmlConfig.h"
|
||||
|
||||
START_LIBEBML_NAMESPACE
|
||||
|
||||
#define LIBEBML_VERSION 0x000800
|
||||
|
||||
static const std::string EbmlCodeVersion = "0.8.0";
|
||||
static const std::string EbmlCodeDate = __TIMESTAMP__;
|
||||
|
||||
/*!
|
||||
\todo Closer relation between an element and the context it comes from (context is an element attribute ?)
|
||||
*/
|
||||
|
||||
END_LIBEBML_NAMESPACE
|
||||
|
||||
#endif // LIBEBML_VERSION_H
|
||||
/****************************************************************************
|
||||
** libebml : parse EBML files, see http://embl.sourceforge.net/
|
||||
**
|
||||
** <file/class description>
|
||||
**
|
||||
** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
|
||||
**
|
||||
** This file is part of libebml.
|
||||
**
|
||||
** This library is free software; you can redistribute it and/or
|
||||
** modify it under the terms of the GNU Lesser General Public
|
||||
** License as published by the Free Software Foundation; either
|
||||
** version 2.1 of the License, or (at your option) any later version.
|
||||
**
|
||||
** This library is distributed in the hope that it will be useful,
|
||||
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
** Lesser General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU Lesser General Public
|
||||
** License along with this library; if not, write to the Free Software
|
||||
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
**
|
||||
** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
|
||||
**
|
||||
** Contact license@matroska.org if any conditions of this licensing are
|
||||
** not clear to you.
|
||||
**
|
||||
**********************************************************************/
|
||||
|
||||
/*!
|
||||
\file
|
||||
\version \$Id: EbmlVersion.h 1326 2009-08-23 00:47:52Z robux4 $
|
||||
\author Steve Lhomme <robux4 @ users.sf.net>
|
||||
*/
|
||||
#ifndef LIBEBML_VERSION_H
|
||||
#define LIBEBML_VERSION_H
|
||||
|
||||
#include <string>
|
||||
|
||||
#include "EbmlConfig.h"
|
||||
|
||||
START_LIBEBML_NAMESPACE
|
||||
|
||||
#define LIBEBML_VERSION 0x000801
|
||||
|
||||
static const std::string EbmlCodeVersion = "0.8.1";
|
||||
static const std::string EbmlCodeDate = __TIMESTAMP__;
|
||||
|
||||
/*!
|
||||
\todo Closer relation between an element and the context it comes from (context is an element attribute ?)
|
||||
*/
|
||||
|
||||
END_LIBEBML_NAMESPACE
|
||||
|
||||
#endif // LIBEBML_VERSION_H
|
||||
|
||||
@ -1,45 +1,50 @@
|
||||
/****************************************************************************
|
||||
** libebml : parse EBML files, see http://embl.sourceforge.net/
|
||||
**
|
||||
** <file/class description>
|
||||
**
|
||||
** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
|
||||
**
|
||||
** This file is part of libebml.
|
||||
**
|
||||
** This library is free software; you can redistribute it and/or
|
||||
** modify it under the terms of the GNU Lesser General Public
|
||||
** License as published by the Free Software Foundation; either
|
||||
** version 2.1 of the License, or (at your option) any later version.
|
||||
**
|
||||
** This library is distributed in the hope that it will be useful,
|
||||
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
** Lesser General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU Lesser General Public
|
||||
** License along with this library; if not, write to the Free Software
|
||||
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
**
|
||||
** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
|
||||
**
|
||||
** Contact license@matroska.org if any conditions of this licensing are
|
||||
** not clear to you.
|
||||
**
|
||||
**********************************************************************/
|
||||
|
||||
/*!
|
||||
\file
|
||||
\version \$Id: EbmlDummy.cpp 639 2004-07-09 20:59:14Z mosu $
|
||||
\author Steve Lhomme <robux4 @ users.sf.net>
|
||||
*/
|
||||
#include "ebml/EbmlDummy.h"
|
||||
#include "ebml/EbmlContexts.h"
|
||||
|
||||
START_LIBEBML_NAMESPACE
|
||||
|
||||
DEFINE_EBML_CLASS_ORPHAN(EbmlDummy, 0xFF, 1, "DummyElement");
|
||||
|
||||
const EbmlId EbmlDummy::DummyRawId = Id_EbmlDummy;
|
||||
|
||||
END_LIBEBML_NAMESPACE
|
||||
/****************************************************************************
|
||||
** libebml : parse EBML files, see http://embl.sourceforge.net/
|
||||
**
|
||||
** <file/class description>
|
||||
**
|
||||
** Copyright (C) 2002-2010 Steve Lhomme. All rights reserved.
|
||||
**
|
||||
** This file is part of libebml.
|
||||
**
|
||||
** This library is free software; you can redistribute it and/or
|
||||
** modify it under the terms of the GNU Lesser General Public
|
||||
** License as published by the Free Software Foundation; either
|
||||
** version 2.1 of the License, or (at your option) any later version.
|
||||
**
|
||||
** This library is distributed in the hope that it will be useful,
|
||||
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
** Lesser General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU Lesser General Public
|
||||
** License along with this library; if not, write to the Free Software
|
||||
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
**
|
||||
** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
|
||||
**
|
||||
** Contact license@matroska.org if any conditions of this licensing are
|
||||
** not clear to you.
|
||||
**
|
||||
**********************************************************************/
|
||||
|
||||
/*!
|
||||
\file
|
||||
\version \$Id: EbmlDummy.cpp 639 2004-07-09 20:59:14Z mosu $
|
||||
\author Steve Lhomme <robux4 @ users.sf.net>
|
||||
*/
|
||||
#include "ebml/EbmlDummy.h"
|
||||
#include "ebml/EbmlContexts.h"
|
||||
|
||||
START_LIBEBML_NAMESPACE
|
||||
|
||||
DEFINE_EBML_CLASS_ORPHAN(EbmlDummy, 0xFF, 1, "DummyElement");
|
||||
|
||||
const EbmlId EbmlDummy::DummyRawId = Id_EbmlDummy;
|
||||
|
||||
EbmlDummy::operator const EbmlId &()
|
||||
{
|
||||
return DummyId;
|
||||
}
|
||||
|
||||
END_LIBEBML_NAMESPACE
|
||||
|
||||
Loading…
Reference in New Issue
Block a user