1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*****************************************************************
|
| AP4 - trex Atoms
|
| Copyright 2002-2008 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4TrexAtom.h"
#include "Ap4AtomFactory.h"
#include "Ap4Utils.h"
/*----------------------------------------------------------------------
| dynamic cast support
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_TrexAtom)
/*----------------------------------------------------------------------
| AP4_TrexAtom::Create
+---------------------------------------------------------------------*/
AP4_TrexAtom*
AP4_TrexAtom::Create(AP4_Size size, AP4_ByteStream& stream)
{
AP4_UI08 version;
AP4_UI32 flags;
if (AP4_FAILED(AP4_Atom::ReadFullHeader(stream, version, flags))) return NULL;
if (version != 0) return NULL;
return new AP4_TrexAtom(size, version, flags, stream);
}
/*----------------------------------------------------------------------
| AP4_TrexAtom::AP4_TrexAtom
+---------------------------------------------------------------------*/
AP4_TrexAtom::AP4_TrexAtom(AP4_UI32 track_id,
AP4_UI32 default_sample_description_index,
AP4_UI32 default_sample_duration,
AP4_UI32 default_sample_size,
AP4_UI32 default_sample_flags) :
AP4_Atom(AP4_ATOM_TYPE_TREX, AP4_FULL_ATOM_HEADER_SIZE+20, 0, 0),
m_TrackId(track_id),
m_DefaultSampleDescriptionIndex(default_sample_description_index),
m_DefaultSampleDuration(default_sample_duration),
m_DefaultSampleSize(default_sample_size),
m_DefaultSampleFlags(default_sample_flags)
{
}
/*----------------------------------------------------------------------
| AP4_TrexAtom::AP4_TrexAtom
+---------------------------------------------------------------------*/
AP4_TrexAtom::AP4_TrexAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream) :
AP4_Atom(AP4_ATOM_TYPE_TREX, size, version, flags)
{
stream.ReadUI32(m_TrackId);
stream.ReadUI32(m_DefaultSampleDescriptionIndex);
stream.ReadUI32(m_DefaultSampleDuration);
stream.ReadUI32(m_DefaultSampleSize);
stream.ReadUI32(m_DefaultSampleFlags);
}
/*----------------------------------------------------------------------
| AP4_TrexAtom::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_TrexAtom::WriteFields(AP4_ByteStream& stream)
{
stream.WriteUI32(m_TrackId);
stream.WriteUI32(m_DefaultSampleDescriptionIndex);
stream.WriteUI32(m_DefaultSampleDuration);
stream.WriteUI32(m_DefaultSampleSize);
stream.WriteUI32(m_DefaultSampleFlags);
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_TrexAtom::InspectFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_TrexAtom::InspectFields(AP4_AtomInspector& inspector)
{
inspector.AddField("track id", m_TrackId);
inspector.AddField("default sample description index", m_DefaultSampleDescriptionIndex);
inspector.AddField("default sample duration", m_DefaultSampleDuration);
inspector.AddField("default sample size", m_DefaultSampleSize);
inspector.AddField("default sample flags", m_DefaultSampleFlags, AP4_AtomInspector::HINT_HEX);
return AP4_SUCCESS;
}
|
