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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*****************************************************************
|
| AP4 - co64 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 "Ap4Co64Atom.h"
#include "Ap4AtomFactory.h"
#include "Ap4Utils.h"
/*----------------------------------------------------------------------
| dynamic cast support
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_Co64Atom)
/*----------------------------------------------------------------------
| AP4_Co64Atom::Create
+---------------------------------------------------------------------*/
AP4_Co64Atom*
AP4_Co64Atom::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_Co64Atom(size, version, flags, stream);
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::AP4_Co64Atom
+---------------------------------------------------------------------*/
AP4_Co64Atom::AP4_Co64Atom(AP4_UI64* entries, AP4_UI32 entry_count) :
AP4_Atom(AP4_ATOM_TYPE_CO64,
AP4_FULL_ATOM_HEADER_SIZE+4+entry_count*8,
0, 0),
m_Entries(new AP4_UI64[entry_count]),
m_EntryCount(entry_count)
{
AP4_CopyMemory(m_Entries, entries, m_EntryCount*8);
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::AP4_Co64Atom
+---------------------------------------------------------------------*/
AP4_Co64Atom::AP4_Co64Atom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream) :
AP4_Atom(AP4_ATOM_TYPE_CO64, size, version, flags)
{
stream.ReadUI32(m_EntryCount);
if (m_EntryCount > (size-AP4_FULL_ATOM_HEADER_SIZE-4)/8) {
m_EntryCount = (size-AP4_FULL_ATOM_HEADER_SIZE-4)/8;
}
m_Entries = new AP4_UI64[m_EntryCount];
for (AP4_Ordinal i=0; i<m_EntryCount; i++) {
stream.ReadUI64(m_Entries[i]);
}
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::~AP4_Co64Atom
+---------------------------------------------------------------------*/
AP4_Co64Atom::~AP4_Co64Atom()
{
delete[] m_Entries;
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::GetChunkOffset
+---------------------------------------------------------------------*/
AP4_Result
AP4_Co64Atom::GetChunkOffset(AP4_Ordinal chunk, AP4_UI64& chunk_offset)
{
// check the bounds
if (chunk > m_EntryCount || chunk == 0) {
return AP4_ERROR_OUT_OF_RANGE;
}
// get the chunk offset
chunk_offset = m_Entries[chunk - 1]; // m_Entries is zero index based
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::SetChunkOffset
+---------------------------------------------------------------------*/
AP4_Result
AP4_Co64Atom::SetChunkOffset(AP4_Ordinal chunk, AP4_UI64 chunk_offset)
{
// check the bounds
if (chunk > m_EntryCount || chunk == 0) {
return AP4_ERROR_OUT_OF_RANGE;
}
// get the chunk offset
m_Entries[chunk - 1] = chunk_offset; // m_Entries is zero index based
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::AdjustChunkOffsets
+---------------------------------------------------------------------*/
AP4_Result
AP4_Co64Atom::AdjustChunkOffsets(AP4_SI64 delta)
{
for (AP4_Ordinal i=0; i<m_EntryCount; i++) {
m_Entries[i] += delta;
}
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_Co64Atom::WriteFields(AP4_ByteStream& stream)
{
AP4_Result result;
// entry count
result = stream.WriteUI32(m_EntryCount);
if (AP4_FAILED(result)) return result;
// entries
for (AP4_Ordinal i=0; i<m_EntryCount; i++) {
result = stream.WriteUI64(m_Entries[i]);
if (AP4_FAILED(result)) return result;
}
return result;
}
/*----------------------------------------------------------------------
| AP4_Co64Atom::InspectFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_Co64Atom::InspectFields(AP4_AtomInspector& inspector)
{
inspector.AddField("entry_count", m_EntryCount);
if (inspector.GetVerbosity() >= 1) {
char header[32];
for (AP4_Ordinal i=0; i<m_EntryCount; i++) {
AP4_FormatString(header, sizeof(header), "entry %8d", i);
inspector.AddField(header, m_Entries[i]);
}
}
return AP4_SUCCESS;
}
|
