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|
/*****************************************************************
|
| AP4 - Object Descriptor
|
| 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_OBJECT_DESCRIPTOR_H_
#define _AP4_OBJECT_DESCRIPTOR_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4List.h"
#include "Ap4String.h"
#include "Ap4Descriptor.h"
#include "Ap4Command.h"
/*----------------------------------------------------------------------
| class references
+---------------------------------------------------------------------*/
class AP4_ByteStream;
/*----------------------------------------------------------------------
| constants
+---------------------------------------------------------------------*/
const AP4_UI08 AP4_DESCRIPTOR_TAG_OD = 0x01;
const AP4_UI08 AP4_DESCRIPTOR_TAG_IOD = 0x02;
const AP4_UI08 AP4_DESCRIPTOR_TAG_MP4_OD = 0x11;
const AP4_UI08 AP4_DESCRIPTOR_TAG_MP4_IOD = 0x10;
/*----------------------------------------------------------------------
| AP4_ObjectDescriptor
+---------------------------------------------------------------------*/
class AP4_ObjectDescriptor : public AP4_Descriptor
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_ObjectDescriptor, AP4_Descriptor)
// methods
AP4_ObjectDescriptor(AP4_ByteStream& stream,
AP4_UI08 tag,
AP4_Size header_size,
AP4_Size payload_size);
AP4_ObjectDescriptor(AP4_UI08 tag, AP4_UI16 id);
virtual ~AP4_ObjectDescriptor();
/**
* Add a sub-descriptor.
* Ownership of the sub-descriptor object is transfered.
*/
virtual AP4_Result AddSubDescriptor(AP4_Descriptor* descriptor);
virtual AP4_Descriptor* FindSubDescriptor(AP4_UI08 tag) const;
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
// accessors
AP4_UI16 GetObjectDescriptorId() const { return m_ObjectDescriptorId; }
bool GetUrlFlag() const { return m_UrlFlag; }
const AP4_String& GetUrl() const { return m_Url;}
protected:
// constructor
AP4_ObjectDescriptor(AP4_UI08 tag, AP4_Size header_size, AP4_Size payload_size);
// members
AP4_UI16 m_ObjectDescriptorId;
bool m_UrlFlag;
AP4_String m_Url;
mutable AP4_List<AP4_Descriptor> m_SubDescriptors;
};
/*----------------------------------------------------------------------
| AP4_InitialObjectDescriptor
+---------------------------------------------------------------------*/
class AP4_InitialObjectDescriptor : public AP4_ObjectDescriptor
{
public:
// methods
AP4_InitialObjectDescriptor(AP4_ByteStream& stream,
AP4_UI08 tag,
AP4_Size header_size,
AP4_Size payload_size);
AP4_InitialObjectDescriptor(AP4_UI08 tag, // should be AP4_DESCRIPTOR_TAG_IOD or AP4_DESCRIPTOR_TAG_MP4_IOD
AP4_UI16 object_descriptor_id,
bool include_inline_profile_level,
AP4_UI08 od_profile_level_indication,
AP4_UI08 scene_profile_level_indication,
AP4_UI08 audio_profile_level_indication,
AP4_UI08 visual_profile_level_indication,
AP4_UI08 graphics_profile_level_indication);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
// accessors
bool GetIncludeProfileLevelFlag() const { return m_IncludeInlineProfileLevelFlag; }
AP4_UI08 GetOdProfileLevelIndication() const { return m_OdProfileLevelIndication; }
AP4_UI08 GetSceneProfileLevelIndication() const { return m_SceneProfileLevelIndication; }
AP4_UI08 GetAudioProfileLevelIndication() const { return m_AudioProfileLevelIndication; }
AP4_UI08 GetVisualProfileLevelIndication() const { return m_VisualProfileLevelIndication; }
AP4_UI08 GetGraphicsProfileLevelIndication() const { return m_GraphicsProfileLevelIndication; }
private:
// members
bool m_IncludeInlineProfileLevelFlag;
AP4_UI08 m_OdProfileLevelIndication;
AP4_UI08 m_SceneProfileLevelIndication;
AP4_UI08 m_AudioProfileLevelIndication;
AP4_UI08 m_VisualProfileLevelIndication;
AP4_UI08 m_GraphicsProfileLevelIndication;
};
/*----------------------------------------------------------------------
| AP4_DescriptorUpdateCommand
+---------------------------------------------------------------------*/
/**
* This class is used for ObjectDescriptorUpdateCommand and
* IPMP_DescriptorUpdateCommand
*/
class AP4_DescriptorUpdateCommand : public AP4_Command
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_DescriptorUpdateCommand, AP4_Command)
// methods
AP4_DescriptorUpdateCommand(AP4_UI08 tag);
AP4_DescriptorUpdateCommand(AP4_ByteStream& stream,
AP4_UI08 tag,
AP4_Size header_size,
AP4_Size payload_size);
virtual ~AP4_DescriptorUpdateCommand();
virtual AP4_Result AddDescriptor(AP4_Descriptor* descriptor);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
virtual AP4_Result Inspect(AP4_AtomInspector& inspector);
// accessors
const AP4_List<AP4_Descriptor>& GetDescriptors() { return m_Descriptors; }
protected:
// members
mutable AP4_List<AP4_Descriptor> m_Descriptors;
};
#endif // _AP4_OBJECT_DESCRIPTOR_H_
|
