Bento4 MP4 SDK: Ap4SchmAtom.h Source File

Bento4 MP4 SDK

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Ap4SchmAtom.h

00001 /*****************************************************************
00002 |
00003 |    AP4 - schm Atoms 
00004 |
00005 |    Copyright 2002-2008 Axiomatic Systems, LLC
00006 |
00007 |
00008 |    This file is part of Bento4/AP4 (MP4 Atom Processing Library).
00009 |
00010 |    Unless you have obtained Bento4 under a difference license,
00011 |    this version of Bento4 is Bento4|GPL.
00012 |    Bento4|GPL is free software; you can redistribute it and/or modify
00013 |    it under the terms of the GNU General Public License as published by
00014 |    the Free Software Foundation; either version 2, or (at your option)
00015 |    any later version.
00016 |
00017 |    Bento4|GPL is distributed in the hope that it will be useful,
00018 |    but WITHOUT ANY WARRANTY; without even the implied warranty of
00019 |    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00020 |    GNU General Public License for more details.
00021 |
00022 |    You should have received a copy of the GNU General Public License
00023 |    along with Bento4|GPL; see the file COPYING.  If not, write to the
00024 |    Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
00025 |    02111-1307, USA.
00026 |
00027  ****************************************************************/
00028 
00029 #ifndef _AP4_SCHM_ATOM_H_
00030 #define _AP4_SCHM_ATOM_H_
00031 
00032 /*----------------------------------------------------------------------
00033 |   includes
00034 +---------------------------------------------------------------------*/
00035 #include "Ap4Types.h"
00036 #include "Ap4String.h"
00037 #include "Ap4Atom.h"
00038 #include "Ap4Array.h"
00039 
00040 /*----------------------------------------------------------------------
00041 |   class references
00042 +---------------------------------------------------------------------*/
00043 class AP4_ByteStream;
00044 
00045 /*----------------------------------------------------------------------
00046 |   AP4_SchmAtom
00047 +---------------------------------------------------------------------*/
00048 class AP4_SchmAtom : public AP4_Atom
00049 {
00050 public:
00051     AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_SchmAtom, AP4_Atom)
00052 
00053     // class methods
00054     static AP4_SchmAtom* Create(AP4_Size                   size, 
00055                                 AP4_Array<AP4_Atom::Type>* context,
00056                                 AP4_ByteStream&            stream);
00057 
00058     // constructors
00059     AP4_SchmAtom(AP4_UI32    scheme_type,
00060                  AP4_UI32    scheme_version,
00061                  const char* scheme_uri = NULL,
00062                  bool        short_form = false);
00063 
00064     // methods
00065     virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
00066     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
00067 
00068     // accessors
00069     AP4_UI32    GetSchemeType()    { return m_SchemeType;    }
00070     AP4_UI32    GetSchemeVersion() { return m_SchemeVersion; }
00071     AP4_String& GetSchemeUri()     { return m_SchemeUri;     }
00072 
00073 private:
00074     // methods
00075     AP4_SchmAtom(AP4_UI32        size, 
00076                  AP4_UI32        version,
00077                  AP4_UI32        flags,
00078                  bool            short_form,
00079                  AP4_ByteStream& stream);
00080 
00081     // members
00082     bool       m_AtomHasShortForm; // for versions of this where the version
00083                                    // field is only 16 bits
00084     AP4_UI32   m_SchemeType;
00085     AP4_UI32   m_SchemeVersion;
00086     AP4_String m_SchemeUri;
00087 };
00088 
00089 #endif // _AP4_SCHM_ATOM_H_
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