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|
/*****************************************************************
|
| AP4 - Descriptors
|
| 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_DESCRIPTOR_H_
#define _AP4_DESCRIPTOR_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Expandable.h"
#include "Ap4List.h"
#include "Ap4DynamicCast.h"
/*----------------------------------------------------------------------
| class references
+---------------------------------------------------------------------*/
class AP4_ByteStream;
class AP4_AtomInspector;
/*----------------------------------------------------------------------
| AP4_Descriptor
+---------------------------------------------------------------------*/
class AP4_Descriptor : public AP4_Expandable
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST(AP4_Descriptor)
// constructor
AP4_Descriptor(AP4_UI08 tag, AP4_Size header_size, AP4_Size payload_size) :
AP4_Expandable(tag, CLASS_ID_SIZE_08, header_size, payload_size) {}
// AP4_Exandable methods
virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
// methods
AP4_UI08 GetTag() { return (AP4_UI08)m_ClassId; }
};
/*----------------------------------------------------------------------
| AP4_UnknownDescriptor
+---------------------------------------------------------------------*/
class AP4_UnknownDescriptor : public AP4_Descriptor
{
public:
// contrusctor
AP4_UnknownDescriptor(AP4_ByteStream& stream,
AP4_UI08 tag,
AP4_Size header_size,
AP4_Size payload_size);
// AP4_Expandable methods
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
private:
// members
AP4_DataBuffer m_Data;
};
/*----------------------------------------------------------------------
| AP4_DescriptorFinder
+---------------------------------------------------------------------*/
class AP4_DescriptorFinder : public AP4_List<AP4_Descriptor>::Item::Finder
{
public:
AP4_DescriptorFinder(AP4_UI08 tag) : m_Tag(tag) {}
AP4_Result Test(AP4_Descriptor* descriptor) const {
return descriptor->GetTag() == m_Tag ? AP4_SUCCESS : AP4_FAILURE;
}
private:
AP4_UI08 m_Tag;
};
/*----------------------------------------------------------------------
| AP4_DescriptorListWriter
+---------------------------------------------------------------------*/
class AP4_DescriptorListWriter : public AP4_List<AP4_Descriptor>::Item::Operator
{
public:
AP4_DescriptorListWriter(AP4_ByteStream& stream) :
m_Stream(stream) {}
AP4_Result Action(AP4_Descriptor* descriptor) const {
return descriptor->Write(m_Stream);
}
private:
AP4_ByteStream& m_Stream;
};
/*----------------------------------------------------------------------
| AP4_DescriptorListInspector
+---------------------------------------------------------------------*/
class AP4_DescriptorListInspector : public AP4_List<AP4_Descriptor>::Item::Operator
{
public:
AP4_DescriptorListInspector(AP4_AtomInspector& inspector) :
m_Inspector(inspector) {}
AP4_Result Action(AP4_Descriptor* descriptor) const {
descriptor->Inspect(m_Inspector);
return AP4_SUCCESS;
}
private:
AP4_AtomInspector& m_Inspector;
};
#endif // _AP4_DESCRIPTOR_H_
|
