00001 /***************************************************************** 00002 | 00003 | AP4 - schm Atoms 00004 | 00005 | Copyright 2002-2006 Gilles Boccon-Gibod & Julien Boeuf 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 // class methods 00052 static AP4_SchmAtom* Create(AP4_Size size, 00053 AP4_Array<AP4_Atom::Type>* context, 00054 AP4_ByteStream& stream); 00055 00056 // constructors 00057 AP4_SchmAtom(AP4_UI32 scheme_type, 00058 AP4_UI32 scheme_version, 00059 const char* scheme_uri = NULL, 00060 bool short_form = false); 00061 00062 // methods 00063 virtual AP4_Result InspectFields(AP4_AtomInspector& inspector); 00064 virtual AP4_Result WriteFields(AP4_ByteStream& stream); 00065 00066 // accessors 00067 AP4_UI32 GetSchemeType() { return m_SchemeType; } 00068 AP4_UI32 GetSchemeVersion() { return m_SchemeVersion; } 00069 AP4_String& GetSchemeUri() { return m_SchemeUri; } 00070 00071 private: 00072 // methods 00073 AP4_SchmAtom(AP4_UI32 size, 00074 AP4_UI32 version, 00075 AP4_UI32 flags, 00076 bool short_form, 00077 AP4_ByteStream& stream); 00078 00079 // members 00080 bool m_AtomHasShortForm; // for versions of this where the version 00081 // field is only 16 bits 00082 AP4_UI32 m_SchemeType; 00083 AP4_UI32 m_SchemeVersion; 00084 AP4_String m_SchemeUri; 00085 }; 00086 00087 #endif // _AP4_SCHM_ATOM_H_