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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*****************************************************************
|
| AP4 - ftyp 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 "Ap4FtypAtom.h"
#include "Ap4AtomFactory.h"
#include "Ap4Utils.h"
/*----------------------------------------------------------------------
| dynamic cast support
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_FtypAtom)
/*----------------------------------------------------------------------
| AP4_FtypAtom::AP4_FtypAtom
+---------------------------------------------------------------------*/
AP4_FtypAtom::AP4_FtypAtom(AP4_UI32 size, AP4_ByteStream& stream) :
AP4_Atom(AP4_ATOM_TYPE_FTYP, size)
{
stream.ReadUI32(m_MajorBrand);
stream.ReadUI32(m_MinorVersion);
size -= 16;
while (size) {
AP4_UI32 compatible_brand;
stream.ReadUI32(compatible_brand);
m_CompatibleBrands.Append(compatible_brand);
size -= 4;
}
}
/*----------------------------------------------------------------------
| AP4_FtypAtom::AP4_FtypAtom
+---------------------------------------------------------------------*/
AP4_FtypAtom::AP4_FtypAtom(AP4_UI32 major_brand,
AP4_UI32 minor_version,
AP4_UI32* compatible_brands,
AP4_Cardinal compatible_brand_count) :
AP4_Atom(AP4_ATOM_TYPE_FTYP, AP4_ATOM_HEADER_SIZE+8+4*compatible_brand_count),
m_MajorBrand(major_brand),
m_MinorVersion(minor_version),
m_CompatibleBrands(compatible_brands, compatible_brand_count)
{
}
/*----------------------------------------------------------------------
| AP4_FtypAtom::HasCompatibleBrand
+---------------------------------------------------------------------*/
bool
AP4_FtypAtom::HasCompatibleBrand(AP4_UI32 brand)
{
for (unsigned int i=0; i<m_CompatibleBrands.ItemCount(); i++) {
if (m_CompatibleBrands[i] == brand) return true;
}
return false;
}
/*----------------------------------------------------------------------
| AP4_FtypAtom::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_FtypAtom::WriteFields(AP4_ByteStream& stream)
{
AP4_Result result;
// major brand
result = stream.WriteUI32(m_MajorBrand);
if (AP4_FAILED(result)) return result;
// minor version
result = stream.WriteUI32(m_MinorVersion);
if (AP4_FAILED(result)) return result;
// compatible brands
AP4_Cardinal compat_brand_count = m_CompatibleBrands.ItemCount();
for (AP4_Ordinal i=0; i<compat_brand_count; i++) {
result = stream.WriteUI32(m_CompatibleBrands[i]);
if (AP4_FAILED(result)) return result;
}
return result;
}
/*----------------------------------------------------------------------
| AP4_FtypAtom::InspectFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_FtypAtom::InspectFields(AP4_AtomInspector& inspector)
{
char name[5];
AP4_FormatFourChars(name, m_MajorBrand);
inspector.AddField("major_brand", name);
inspector.AddField("minor_version", m_MinorVersion, AP4_AtomInspector::HINT_HEX);
// compatible brands
for (unsigned int i=0; i<m_CompatibleBrands.ItemCount(); i++) {
AP4_UI32 cb = m_CompatibleBrands[i];
AP4_FormatFourChars(name, cb);
inspector.AddField("compatible_brand", name);
}
return AP4_SUCCESS;
}
|
