Bento4 MP4 SDK: Ap4ElstAtom.h Source File

Bento4 MP4 SDK

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Ap4ElstAtom.h

00001 /*****************************************************************
00002 |
00003 |    AP4 - elst 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_ELST_ATOM_H_
00030 #define _AP4_ELST_ATOM_H_
00031 
00032 /*----------------------------------------------------------------------
00033 |   includes
00034 +---------------------------------------------------------------------*/
00035 #include "Ap4Types.h"
00036 #include "Ap4Atom.h"
00037 #include "Ap4Array.h"
00038 
00039 /*----------------------------------------------------------------------
00040 |   class references
00041 +---------------------------------------------------------------------*/
00042 class AP4_ByteStream;
00043 
00044 /*----------------------------------------------------------------------
00045 |   AP4_ElstAtom
00046 +---------------------------------------------------------------------*/
00047 class AP4_ElstEntry {
00048 public:
00049     AP4_ElstEntry(AP4_UI64 segment_duration = 0, AP4_SI64 media_time = 0, AP4_UI16 media_rate = 1) :
00050       m_SegmentDuration(segment_duration),
00051       m_MediaTime(media_time),
00052       m_MediaRate(media_rate) {}
00053 
00054     AP4_UI64 m_SegmentDuration;
00055     AP4_SI64 m_MediaTime;
00056     AP4_UI16 m_MediaRate;
00057 };
00058 
00059 class AP4_ElstAtom : public AP4_Atom
00060 {
00061 public:
00062     // class methods
00063     static AP4_ElstAtom* Create(AP4_Size size, AP4_ByteStream& stream);
00064 
00065     // methods
00066     virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
00067     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
00068     
00069 private:
00070     // methods
00071     AP4_ElstAtom(AP4_UI32        size, 
00072                  AP4_UI32        version, 
00073                  AP4_UI32        flags, 
00074                  AP4_ByteStream& stream);
00075 
00076     // members
00077     AP4_Array<AP4_ElstEntry> m_Entries;
00078 };
00079 
00080 #endif // _AP4_ELST_ATOM_H_
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