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
|
/*****************************************************************
|
| AP4 - Atom Factory
|
| 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.
|
****************************************************************/
#ifndef _AP4_ATOM_FACTORY_H_
#define _AP4_ATOM_FACTORY_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Types.h"
#include "Ap4Atom.h"
#include "Ap4Array.h"
/*----------------------------------------------------------------------
| class references
+---------------------------------------------------------------------*/
class AP4_ByteStream;
/*----------------------------------------------------------------------
| AP4_AtomFactory
+---------------------------------------------------------------------*/
class AP4_AtomFactory {
public:
// types
class TypeHandler {
public:
virtual ~TypeHandler() {};
virtual AP4_Result CreateAtom(AP4_Atom::Type type,
AP4_UI32 size,
AP4_ByteStream& stream,
AP4_Atom::Type context,
AP4_Atom*& atom) = 0;
};
// constructor
AP4_AtomFactory() {}
// destructor
virtual ~AP4_AtomFactory();
// methods
AP4_Result AddTypeHandler(TypeHandler* handler);
AP4_Result RemoveTypeHandler(TypeHandler* handler);
AP4_Result CreateAtomFromStream(AP4_ByteStream& stream,
AP4_LargeSize& bytes_available,
AP4_Atom*& atom);
virtual AP4_Result CreateAtomFromStream(AP4_ByteStream& stream,
AP4_UI32 type,
AP4_UI32 size_32,
AP4_UI64 size_64,
AP4_Atom*& atom);
AP4_Result CreateAtomFromStream(AP4_ByteStream& stream,
AP4_Atom*& atom);
AP4_Result CreateAtomsFromStream(AP4_ByteStream& stream,
AP4_AtomParent& atoms);
AP4_Result CreateAtomsFromStream(AP4_ByteStream& stream,
AP4_LargeSize bytes_available,
AP4_AtomParent& atoms);
// context
void PushContext(AP4_Atom::Type context);
void PopContext();
AP4_Atom::Type GetContext(AP4_Ordinal depth=0);
private:
// members
AP4_Array<AP4_Atom::Type> m_ContextStack;
AP4_List<TypeHandler> m_TypeHandlers;
};
/*----------------------------------------------------------------------
| AP4_DefaultAtomFactory
+---------------------------------------------------------------------*/
class AP4_DefaultAtomFactory : public AP4_AtomFactory {
public:
// class members
static AP4_DefaultAtomFactory Instance;
// constructor
AP4_DefaultAtomFactory();
// this member is used to detect the situation where the
// platform's code loader does not construct static C++ objects
bool m_Initialized;
AP4_Result Initialize();
};
#endif // _AP4_ATOM_FACTORY_H_
|
