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# Ap4MvhdAtom.h

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    00001 /*****************************************************************
    00002 |
    00003 |    AP4 - mvhd Atoms
    00004 |
    00005 |    Copyright 2002-2005 Gilles Boccon-Gibod
    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_MVHD_ATOM_H_
    00030 #define _AP4_MVHD_ATOM_H_
    00031
    00032 /*----------------------------------------------------------------------
    00033 |   includes
    00034 +---------------------------------------------------------------------*/
    00035 #include "Ap4List.h"
    00036 #include "Ap4Atom.h"
    00037
    00038 /*----------------------------------------------------------------------
    00039 |   AP4_MvhdAtom
    00040 +---------------------------------------------------------------------*/
    00041 class AP4_MvhdAtom : public AP4_Atom
    00042 {
    00043 public:
    00044     // class methods
    00045     static AP4_MvhdAtom* Create(AP4_Size size, AP4_ByteStream& stream);
    00046
    00047     // methods
    00048     AP4_MvhdAtom(AP4_UI32 creation_time,
    00049                  AP4_UI32 modification_time,
    00050                  AP4_UI32 time_scale,
    00051                  AP4_UI32 duration,
    00052                  AP4_UI32 rate,
    00053                  AP4_UI16 volume);
    00054     virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
    00055     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
    00056     AP4_UI32           GetDuration() { return m_Duration; }
    00057     void               SetDuration(AP4_UI32 duration) { m_Duration = duration;}
    00058     AP4_Duration       GetDurationMs();
    00059     AP4_UI32           GetTimeScale() { return m_TimeScale; }
    00060     AP4_Result         SetTimeScale(AP4_UI32 time_scale) {
    00061         m_TimeScale = time_scale;
    00062         return AP4_SUCCESS;
    00063     }
    00064
    00065 private:
    00066     // methods
    00067     AP4_MvhdAtom(AP4_UI32        size,
    00068                  AP4_UI32        version,
    00069                  AP4_UI32        flags,
    00070                  AP4_ByteStream& stream);
    00071
    00072     // members
    00073     AP4_UI32 m_CreationTimeH;
    00074     AP4_UI32 m_CreationTime;
    00075     AP4_UI32 m_ModificationTimeH;
    00076     AP4_UI32 m_ModificationTime;
    00077     AP4_UI32 m_TimeScale;
    00078     AP4_UI32 m_DurationH;
    00079     AP4_UI32 m_Duration;
    00080     AP4_UI32 m_Rate;
    00081     AP4_UI16 m_Volume;
    00082     AP4_UI08 m_Reserved1[2];
    00083     AP4_UI08 m_Reserved2[8];
    00084     AP4_UI32 m_Matrix[9];
    00085     AP4_UI08 m_Predefined[24];
    00086     AP4_UI32 m_NextTrackId;
    00087 };
    00088
    00089 #endif // _AP4_MVHD_ATOM_H_