Bento4 MP4 SDK: Ap4OhdrAtom.h Source File

Bento4 MP4 SDK

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Ap4OhdrAtom.h

00001 /*****************************************************************
00002 |
00003 |    AP4 - ohdr Atom
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_OHDR_ATOM_H_
00030 #define _AP4_OHDR_ATOM_H_
00031 
00032 /*----------------------------------------------------------------------
00033 |   includes
00034 +---------------------------------------------------------------------*/
00035 #include "Ap4Types.h"
00036 #include "Ap4Atom.h"
00037 #include "Ap4ContainerAtom.h"
00038 #include "Ap4String.h"
00039 #include "Ap4OmaDcf.h"
00040 
00041 /*----------------------------------------------------------------------
00042 |   constants
00043 +---------------------------------------------------------------------*/
00044 const AP4_UI08 AP4_OMA_DCF_ENCRYPTION_METHOD_NULL    = 0;
00045 const AP4_UI08 AP4_OMA_DCF_ENCRYPTION_METHOD_AES_CBC = 1;
00046 const AP4_UI08 AP4_OMA_DCF_ENCRYPTION_METHOD_AES_CTR = 2;
00047 
00048 const AP4_UI08 AP4_OMA_DCF_PADDING_SCHEME_NONE     = 0;
00049 const AP4_UI08 AP4_OMA_DCF_PADDING_SCHEME_RFC_2630 = 1;
00050 
00051 /*----------------------------------------------------------------------
00052 |   AP4_OhdrAtom
00053 +---------------------------------------------------------------------*/
00054 class AP4_OhdrAtom : public AP4_ContainerAtom, public AP4_OmaDrmInfo
00055 {
00056 public:
00057     AP4_IMPLEMENT_DYNAMIC_CAST_D2(AP4_OhdrAtom, AP4_ContainerAtom, AP4_OmaDrmInfo)
00058 
00059     // class methods
00060     static AP4_OhdrAtom* Create(AP4_Size         size, 
00061                                 AP4_ByteStream&  stream, 
00062                                 AP4_AtomFactory& atom_factory);
00063 
00064     // constructor
00065     AP4_OhdrAtom(AP4_UI08        encryption_method, 
00066                  AP4_UI08        padding_scheme,
00067                  AP4_UI64        plaintext_length,
00068                  const char*     content_id,
00069                  const char*     rights_issuer_url,
00070                  const AP4_Byte* textual_headers,
00071                  AP4_Size        textual_headers_size);
00072 
00073     // methods
00074     virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
00075     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
00076     virtual AP4_Atom*  Clone();
00077 
00078     // accessors
00079     AP4_UI08          GetEncryptionMethod()   const { return m_EncryptionMethod; } 
00080     void              SetEncryptionMethod(AP4_UI08 encryption_method) { m_EncryptionMethod = encryption_method; }
00081     AP4_UI08          GetPaddingScheme()      const { return m_PaddingScheme;    }
00082     void              SetPaddingScheme(AP4_UI08 padding_scheme) { m_PaddingScheme = padding_scheme; }
00083     AP4_UI64          GetPlaintextLength()    const { return m_PlaintextLength;  }
00084     
00085     // AP4_OmaDrmInfo implementation
00086     const AP4_String& GetContentId()          const { return m_ContentId;        }
00087     const AP4_String& GetRightsIssuerUrl()    const { return m_RightsIssuerUrl;  }
00088     const AP4_DataBuffer& GetTextualHeaders() const { return m_TextualHeaders;   }
00089 
00090 private:
00091     // methods
00092     AP4_OhdrAtom(AP4_UI32         size, 
00093                  AP4_UI32         version,
00094                  AP4_UI32         flags,
00095                  AP4_ByteStream&  stream,
00096                  AP4_AtomFactory& atom_factory);
00097 
00098     // members
00099     AP4_UI08       m_EncryptionMethod; 
00100     AP4_UI08       m_PaddingScheme;
00101     AP4_UI64       m_PlaintextLength;
00102     AP4_String     m_ContentId;
00103     AP4_String     m_RightsIssuerUrl;
00104     AP4_DataBuffer m_TextualHeaders;
00105 };
00106 
00107 #endif // _AP4_OHDR_ATOM_H_
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