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|
/*****************************************************************
|
| AP4 - Expandable base class
|
| Copyright 2002-2008 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL 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 General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
#ifndef _AP4_EXPANDABLE_H_
#define _AP4_EXPANDABLE_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Types.h"
#include "Ap4DataBuffer.h"
/*----------------------------------------------------------------------
| class references
+---------------------------------------------------------------------*/
class AP4_ByteStream;
class AP4_AtomInspector;
/*----------------------------------------------------------------------
| AP4_Expandable
+---------------------------------------------------------------------*/
class AP4_Expandable
{
public:
// types
enum ClassIdSize {
CLASS_ID_SIZE_08
};
// class methods
static AP4_Size MinHeaderSize(AP4_Size payload_size);
// methods
AP4_Expandable(AP4_UI32 class_id,
ClassIdSize class_id_size,
AP4_Size header_size,
AP4_Size payload_size);
virtual ~AP4_Expandable() {}
AP4_UI32 GetClassId() { return m_ClassId; }
AP4_Size GetSize() { return m_PayloadSize+m_HeaderSize; }
AP4_Size GetHeaderSize() { return m_HeaderSize; }
virtual AP4_Result Write(AP4_ByteStream& stream);
virtual AP4_Result WriteFields(AP4_ByteStream& stream) = 0;
virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
protected:
// members
AP4_UI32 m_ClassId;
ClassIdSize m_ClassIdSize;
AP4_Size m_HeaderSize;
AP4_Size m_PayloadSize;
};
/*----------------------------------------------------------------------
| AP4_UnknownExpandable
+---------------------------------------------------------------------*/
class AP4_UnknownExpandable : public AP4_Expandable
{
public:
// methods
AP4_UnknownExpandable(AP4_ByteStream& stream,
AP4_UI32 class_id,
ClassIdSize class_id_size,
AP4_Size header_size,
AP4_Size payload_size);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
private:
// members
AP4_DataBuffer m_Data;
};
#endif // _AP4_EXPANDABLE_H_
|
