1 /*****************************************************************
2 |
3 |    AP4 - mvhd Atoms
4 |
5 |    Copyright 2002-2008 Axiomatic Systems, LLC
6 |
7 |
8 |    This file is part of Bento4/AP4 (MP4 Atom Processing Library).
9 |
10 |    Unless you have obtained Bento4 under a difference license,
11 |    this version of Bento4 is Bento4|GPL.
12 |    Bento4|GPL is free software; you can redistribute it and/or modify
13 |    it under the terms of the GNU General Public License as published by
14 |    the Free Software Foundation; either version 2, or (at your option)
15 |    any later version.
16 |
17 |    Bento4|GPL is distributed in the hope that it will be useful,
18 |    but WITHOUT ANY WARRANTY; without even the implied warranty of
19 |    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20 |    GNU General Public License for more details.
21 |
22 |    You should have received a copy of the GNU General Public License
23 |    along with Bento4|GPL; see the file COPYING.  If not, write to the
24 |    Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 |    02111-1307, USA.
26 |
27  ****************************************************************/
28 
29 #ifndef _AP4_MVHD_ATOM_H_
30 #define _AP4_MVHD_ATOM_H_
31 
32 /*----------------------------------------------------------------------
33 |   includes
34 +---------------------------------------------------------------------*/
35 #include "Ap4List.h"
36 #include "Ap4Atom.h"
37 
38 /*----------------------------------------------------------------------
39 |   AP4_MvhdAtom
40 +---------------------------------------------------------------------*/
41 class AP4_MvhdAtom : public AP4_Atom
42 {
43 public:
44     AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_MvhdAtom, AP4_Atom)
45 
46     // class methods
47     static AP4_MvhdAtom* Create(AP4_Size size, AP4_ByteStream& stream);
48 
49     // methods
50     AP4_MvhdAtom(AP4_UI64 creation_time,
51                  AP4_UI64 modification_time,
52                  AP4_UI32 time_scale,
53                  AP4_UI64 duration,
54                  AP4_UI32 rate,
55                  AP4_UI16 volume);
56     virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
57     virtual AP4_Result WriteFields(AP4_ByteStream& stream);
GetDuration()58     AP4_UI64           GetDuration() { return m_Duration; }
SetDuration(AP4_UI64 duration)59     void               SetDuration(AP4_UI64 duration) { m_Duration = duration;}
60     AP4_UI32           GetDurationMs();
GetTimeScale()61     AP4_UI32           GetTimeScale() { return m_TimeScale; }
SetTimeScale(AP4_UI32 time_scale)62     AP4_Result         SetTimeScale(AP4_UI32 time_scale) {
63         m_TimeScale = time_scale;
64         return AP4_SUCCESS;
65     }
SetNextTrackId(AP4_UI32 next_track_id)66     AP4_Result         SetNextTrackId(AP4_UI32 next_track_id){
67         m_NextTrackId = next_track_id;
68         return AP4_SUCCESS;
69     }
70 
71 private:
72     // methods
73     AP4_MvhdAtom(AP4_UI32        size,
74                  AP4_UI08        version,
75                  AP4_UI32        flags,
76                  AP4_ByteStream& stream);
77 
78     // members
79     AP4_UI64 m_CreationTime;
80     AP4_UI64 m_ModificationTime;
81     AP4_UI32 m_TimeScale;
82     AP4_UI64 m_Duration;
83     AP4_UI32 m_Rate;
84     AP4_UI16 m_Volume;
85     AP4_UI08 m_Reserved1[2];
86     AP4_UI08 m_Reserved2[8];
87     AP4_UI32 m_Matrix[9];
88     AP4_UI08 m_Predefined[24];
89     AP4_UI32 m_NextTrackId;
90 };
91 
92 #endif // _AP4_MVHD_ATOM_H_
93