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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/* Quicktime muxer plugin for GStreamer
* Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "properties.h"
/* if needed, re-allocate buffer to ensure size bytes can be written into it
* at offset */
void
prop_copy_ensure_buffer (guint8 ** buffer, guint64 * bsize, guint64 * offset,
guint64 size)
{
if (buffer && *bsize - *offset < size) {
*bsize += size + 10 * 1024;
*buffer = g_realloc (*buffer, *bsize);
}
}
static guint64
copy_func (void *prop, guint size, guint8 ** buffer, guint64 * bsize,
guint64 * offset)
{
if (buffer) {
prop_copy_ensure_buffer (buffer, bsize, offset, size);
memcpy (*buffer + *offset, prop, size);
}
*offset += size;
return size;
}
#define INT_ARRAY_COPY_FUNC_FAST(name, datatype) \
guint64 prop_copy_ ## name ## _array (datatype *prop, guint size, \
guint8 ** buffer, guint64 * bsize, guint64 * offset) { \
return copy_func (prop, sizeof (datatype) * size, buffer, bsize, offset);\
}
#define INT_ARRAY_COPY_FUNC(name, datatype) \
guint64 prop_copy_ ## name ## _array (datatype *prop, guint size, \
guint8 ** buffer, guint64 * bsize, guint64 * offset) { \
guint i; \
\
for (i = 0; i < size; i++) { \
prop_copy_ ## name (prop[i], buffer, bsize, offset); \
} \
return sizeof (datatype) * size; \
}
/* INTEGERS */
guint64
prop_copy_uint8 (guint8 prop, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
return copy_func (&prop, sizeof (guint8), buffer, size, offset);
}
guint64
prop_copy_uint16 (guint16 prop, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
prop = GUINT16_TO_BE (prop);
return copy_func (&prop, sizeof (guint16), buffer, size, offset);
}
guint64
prop_copy_uint32 (guint32 prop, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
prop = GUINT32_TO_BE (prop);
return copy_func (&prop, sizeof (guint32), buffer, size, offset);
}
guint64
prop_copy_uint64 (guint64 prop, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
prop = GUINT64_TO_BE (prop);
return copy_func (&prop, sizeof (guint64), buffer, size, offset);
}
guint64
prop_copy_int32 (gint32 prop, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
prop = GINT32_TO_BE (prop);
return copy_func (&prop, sizeof (guint32), buffer, size, offset);
}
/* uint8 can use direct copy in any case, and may be used for large quantity */
INT_ARRAY_COPY_FUNC_FAST (uint8, guint8);
/* not used in large quantity anyway */
INT_ARRAY_COPY_FUNC (uint16, guint16);
INT_ARRAY_COPY_FUNC (uint32, guint32);
INT_ARRAY_COPY_FUNC (uint64, guint64);
/* FOURCC */
guint64
prop_copy_fourcc (guint32 prop, guint8 ** buffer, guint64 * size,
guint64 * offset)
{
prop = GINT32_TO_LE (prop);
return copy_func (&prop, sizeof (guint32), buffer, size, offset);
}
INT_ARRAY_COPY_FUNC (fourcc, guint32);
/**
* prop_copy_fixed_size_string:
* @string: the string to be copied
* @str_size: size of the string
* @buffer: the array to copy the string to
* @offset: the position in the buffer array.
* This value is updated to the point right after the copied string.
*
* Copies a string of bytes without placing its size at the beginning.
*
* Returns: the number of bytes copied
*/
guint64
prop_copy_fixed_size_string (guint8 * string, guint str_size, guint8 ** buffer,
guint64 * size, guint64 * offset)
{
return copy_func (string, str_size * sizeof (guint8), buffer, size, offset);
}
/**
* prop_copy_size_string:
*
* @string: the string to be copied
* @str_size: size of the string
* @buffer: the array to copy the string to
* @offset: the position in the buffer array.
* This value is updated to the point right after the copied string.
*
* Copies a string and its size to an array. Example:
* string = 'abc\0'
* result in the array: [3][a][b][c] (each [x] represents a position)
*
* Returns: the number of bytes copied
*/
guint64
prop_copy_size_string (guint8 * string, guint str_size, guint8 ** buffer,
guint64 * size, guint64 * offset)
{
guint64 original_offset = *offset;
prop_copy_uint8 (str_size, buffer, size, offset);
prop_copy_fixed_size_string (string, str_size, buffer, size, offset);
return *offset - original_offset;
}
/**
* prop_copy_null_terminated_string:
* @string: the string to be copied
* @buffer: the array to copy the string to
* @offset: the position in the buffer array.
* This value is updated to the point right after the copied string.
*
* Copies a string including its null terminating char to an array.
*
* Returns: the number of bytes copied
*/
guint64
prop_copy_null_terminated_string (gchar * string, guint8 ** buffer,
guint64 * size, guint64 * offset)
{
guint64 original_offset = *offset;
guint len = strlen (string);
prop_copy_fixed_size_string ((guint8 *) string, len, buffer, size, offset);
prop_copy_uint8 ('\0', buffer, size, offset);
return *offset - original_offset;
}
|
