1 /* Quicktime muxer plugin for GStreamer |
|
2 * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br> |
|
3 * |
|
4 * This library is free software; you can redistribute it and/or |
|
5 * modify it under the terms of the GNU Library General Public |
|
6 * License as published by the Free Software Foundation; either |
|
7 * version 2 of the License, or (at your option) any later version. |
|
8 * |
|
9 * This library is distributed in the hope that it will be useful, |
|
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
12 * Library General Public License for more details. |
|
13 * |
|
14 * You should have received a copy of the GNU Library General Public |
|
15 * License along with this library; if not, write to the |
|
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
|
17 * Boston, MA 02111-1307, USA. |
|
18 */ |
|
19 /* |
|
20 * Unless otherwise indicated, Source Code is licensed under MIT license. |
|
21 * See further explanation attached in License Statement (distributed in the file |
|
22 * LICENSE). |
|
23 * |
|
24 * Permission is hereby granted, free of charge, to any person obtaining a copy of |
|
25 * this software and associated documentation files (the "Software"), to deal in |
|
26 * the Software without restriction, including without limitation the rights to |
|
27 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
|
28 * of the Software, and to permit persons to whom the Software is furnished to do |
|
29 * so, subject to the following conditions: |
|
30 * |
|
31 * The above copyright notice and this permission notice shall be included in all |
|
32 * copies or substantial portions of the Software. |
|
33 * |
|
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|
37 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
|
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
|
40 * SOFTWARE. |
|
41 */ |
|
42 |
|
43 #include "properties.h" |
|
44 |
|
45 /* if needed, re-allocate buffer to ensure size bytes can be written into it |
|
46 * at offset */ |
|
47 void |
|
48 prop_copy_ensure_buffer (guint8 ** buffer, guint64 * bsize, guint64 * offset, |
|
49 guint64 size) |
|
50 { |
|
51 if (buffer && *bsize - *offset < size) { |
|
52 *bsize += size + 10 * 1024; |
|
53 *buffer = g_realloc (*buffer, *bsize); |
|
54 } |
|
55 } |
|
56 |
|
57 static guint64 |
|
58 copy_func (void *prop, guint size, guint8 ** buffer, guint64 * bsize, |
|
59 guint64 * offset) |
|
60 { |
|
61 if (buffer) { |
|
62 prop_copy_ensure_buffer (buffer, bsize, offset, size); |
|
63 memcpy (*buffer + *offset, prop, size); |
|
64 } |
|
65 *offset += size; |
|
66 return size; |
|
67 } |
|
68 |
|
69 #define INT_ARRAY_COPY_FUNC_FAST(name, datatype) \ |
|
70 guint64 prop_copy_ ## name ## _array (datatype *prop, guint size, \ |
|
71 guint8 ** buffer, guint64 * bsize, guint64 * offset) { \ |
|
72 return copy_func (prop, sizeof (datatype) * size, buffer, bsize, offset);\ |
|
73 } |
|
74 |
|
75 #define INT_ARRAY_COPY_FUNC(name, datatype) \ |
|
76 guint64 prop_copy_ ## name ## _array (datatype *prop, guint size, \ |
|
77 guint8 ** buffer, guint64 * bsize, guint64 * offset) { \ |
|
78 guint i; \ |
|
79 \ |
|
80 for (i = 0; i < size; i++) { \ |
|
81 prop_copy_ ## name (prop[i], buffer, bsize, offset); \ |
|
82 } \ |
|
83 return sizeof (datatype) * size; \ |
|
84 } |
|
85 |
|
86 /* INTEGERS */ |
|
87 guint64 |
|
88 prop_copy_uint8 (guint8 prop, guint8 ** buffer, guint64 * size, |
|
89 guint64 * offset) |
|
90 { |
|
91 return copy_func (&prop, sizeof (guint8), buffer, size, offset); |
|
92 } |
|
93 |
|
94 guint64 |
|
95 prop_copy_uint16 (guint16 prop, guint8 ** buffer, guint64 * size, |
|
96 guint64 * offset) |
|
97 { |
|
98 prop = GUINT16_TO_BE (prop); |
|
99 return copy_func (&prop, sizeof (guint16), buffer, size, offset); |
|
100 } |
|
101 |
|
102 guint64 |
|
103 prop_copy_uint32 (guint32 prop, guint8 ** buffer, guint64 * size, |
|
104 guint64 * offset) |
|
105 { |
|
106 prop = GUINT32_TO_BE (prop); |
|
107 return copy_func (&prop, sizeof (guint32), buffer, size, offset); |
|
108 } |
|
109 |
|
110 guint64 |
|
111 prop_copy_uint64 (guint64 prop, guint8 ** buffer, guint64 * size, |
|
112 guint64 * offset) |
|
113 { |
|
114 prop = GUINT64_TO_BE (prop); |
|
115 return copy_func (&prop, sizeof (guint64), buffer, size, offset); |
|
116 } |
|
117 |
|
118 guint64 |
|
119 prop_copy_int32 (gint32 prop, guint8 ** buffer, guint64 * size, |
|
120 guint64 * offset) |
|
121 { |
|
122 prop = GINT32_TO_BE (prop); |
|
123 return copy_func (&prop, sizeof (guint32), buffer, size, offset); |
|
124 } |
|
125 |
|
126 /* uint8 can use direct copy in any case, and may be used for large quantity */ |
|
127 INT_ARRAY_COPY_FUNC_FAST (uint8, guint8); |
|
128 /* not used in large quantity anyway */ |
|
129 INT_ARRAY_COPY_FUNC (uint16, guint16); |
|
130 INT_ARRAY_COPY_FUNC (uint32, guint32); |
|
131 INT_ARRAY_COPY_FUNC (uint64, guint64); |
|
132 |
|
133 /* FOURCC */ |
|
134 guint64 |
|
135 prop_copy_fourcc (guint32 prop, guint8 ** buffer, guint64 * size, |
|
136 guint64 * offset) |
|
137 { |
|
138 prop = GINT32_TO_LE (prop); |
|
139 return copy_func (&prop, sizeof (guint32), buffer, size, offset); |
|
140 } |
|
141 |
|
142 INT_ARRAY_COPY_FUNC (fourcc, guint32); |
|
143 |
|
144 /** |
|
145 * Copies a string of bytes without placing its size at the beginning. |
|
146 * |
|
147 * @string: the string to be copied |
|
148 * @str_size: size of the string |
|
149 * @buffer: the array to copy the string to |
|
150 * @offset: the position in the buffer array. |
|
151 * This value is updated to the point right after the copied string. |
|
152 * |
|
153 * Returns: the number of bytes copied |
|
154 */ |
|
155 guint64 |
|
156 prop_copy_fixed_size_string (guint8 * string, guint str_size, guint8 ** buffer, |
|
157 guint64 * size, guint64 * offset) |
|
158 { |
|
159 return copy_func (string, str_size * sizeof (guint8), buffer, size, offset); |
|
160 } |
|
161 |
|
162 /** |
|
163 * Copies a string and its size to an array. Example: |
|
164 * string = 'abc\0' |
|
165 * result in the array: [3][a][b][c] (each [x] represents a position) |
|
166 * |
|
167 * @string: the string to be copied |
|
168 * @str_size: size of the string |
|
169 * @buffer: the array to copy the string to |
|
170 * @offset: the position in the buffer array. |
|
171 * This value is updated to the point right after the copied string. |
|
172 * |
|
173 * Returns: the number of bytes copied |
|
174 */ |
|
175 guint64 |
|
176 prop_copy_size_string (guint8 * string, guint str_size, guint8 ** buffer, |
|
177 guint64 * size, guint64 * offset) |
|
178 { |
|
179 guint64 original_offset = *offset; |
|
180 |
|
181 prop_copy_uint8 (str_size, buffer, size, offset); |
|
182 prop_copy_fixed_size_string (string, str_size, buffer, size, offset); |
|
183 return *offset - original_offset; |
|
184 } |
|
185 |
|
186 /** |
|
187 * Copies a string including its null terminating char to an array. |
|
188 * |
|
189 * @string: the string to be copied |
|
190 * @buffer: the array to copy the string to |
|
191 * @offset: the position in the buffer array. |
|
192 * This value is updated to the point right after the copied string. |
|
193 * |
|
194 * Returns: the number of bytes copied |
|
195 */ |
|
196 guint64 |
|
197 prop_copy_null_terminated_string (gchar * string, guint8 ** buffer, |
|
198 guint64 * size, guint64 * offset) |
|
199 { |
|
200 guint64 original_offset = *offset; |
|
201 guint len = strlen (string); |
|
202 |
|
203 prop_copy_fixed_size_string ((guint8 *) string, len, buffer, size, offset); |
|
204 prop_copy_uint8 ('\0', buffer, size, offset); |
|
205 return *offset - original_offset; |
|
206 } |
|