1 #ifndef JPEG_H
2 #define JPEG_H 1
3 /*
4 * Insert a JPEG header at start of frame
5 *
6 * This module is used by the gspca subdrivers.
7 * A special case is done for Conexant webcams.
8 *
9 * Copyright (C) Jean-Francois Moine (http://moinejf.free.fr)
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 */
26
27 /* start of jpeg frame + quantization table */
28 static const unsigned char quant[][0x88] = {
29 /* index 0 - Q40*/
30 {
31 0xff, 0xd8, /* jpeg */
32 0xff, 0xdb, 0x00, 0x84, /* DQT */
33 0, /* quantization table part 1 */
34 20, 14, 15, 18, 15, 13, 20, 18, 16, 18, 23, 21, 20, 24, 30, 50,
35 33, 30, 28, 28, 30, 61, 44, 46, 36, 50, 73, 64, 76, 75, 71, 64,
36 70, 69, 80, 90, 115, 98, 80, 85, 109, 86, 69, 70, 100, 136, 101,
37 109,
38 119, 123, 129, 130, 129, 78, 96, 141, 151, 140, 125, 150, 115,
39 126, 129, 124,
40 1, /* quantization table part 2 */
41 21, 23, 23, 30, 26, 30, 59, 33, 33, 59, 124, 83, 70, 83, 124, 124,
42 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
43 124, 124, 124,
44 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
45 124, 124, 124,
46 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
47 124, 124, 124},
48 /* index 1 - Q50 */
49 {
50 0xff, 0xd8,
51 0xff, 0xdb, 0x00, 0x84, /* DQT */
52 0,
53 16, 11, 12, 14, 12, 10, 16, 14, 13, 14, 18, 17, 16, 19, 24, 40,
54 26, 24, 22, 22, 24, 49, 35, 37, 29, 40, 58, 51, 61, 60, 57, 51,
55 56, 55, 64, 72, 92, 78, 64, 68, 87, 69, 55, 56, 80, 109, 81, 87,
56 95, 98, 103, 104, 103, 62, 77, 113, 121, 112, 100, 120, 92, 101,
57 103, 99,
58 1,
59 17, 18, 18, 24, 21, 24, 47, 26, 26, 47, 99, 66, 56, 66, 99, 99,
60 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
61 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
62 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99},
63 /* index 2 Q60 */
64 {
65 0xff, 0xd8,
66 0xff, 0xdb, 0x00, 0x84, /* DQT */
67 0,
68 13, 9, 10, 11, 10, 8, 13, 11, 10, 11, 14, 14, 13, 15, 19, 32,
69 21, 19, 18, 18, 19, 39, 28, 30, 23, 32, 46, 41, 49, 48, 46, 41,
70 45, 44, 51, 58, 74, 62, 51, 54, 70, 55, 44, 45, 64, 87, 65, 70,
71 76, 78, 82, 83, 82, 50, 62, 90, 97, 90, 80, 96, 74, 81, 82, 79,
72 1,
73 14, 14, 14, 19, 17, 19, 38, 21, 21, 38, 79, 53, 45, 53, 79, 79,
74 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
75 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
76 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79},
77 /* index 3 - Q70 */
78 {
79 0xff, 0xd8,
80 0xff, 0xdb, 0x00, 0x84, /* DQT */
81 0,
82 10, 7, 7, 8, 7, 6, 10, 8, 8, 8, 11, 10, 10, 11, 14, 24,
83 16, 14, 13, 13, 14, 29, 21, 22, 17, 24, 35, 31, 37, 36, 34, 31,
84 34, 33, 38, 43, 55, 47, 38, 41, 52, 41, 33, 34, 48, 65, 49, 52,
85 57, 59, 62, 62, 62, 37, 46, 68, 73, 67, 60, 72, 55, 61, 62, 59,
86 1,
87 10, 11, 11, 14, 13, 14, 28, 16, 16, 28, 59, 40, 34, 40, 59, 59,
88 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
89 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
90 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59},
91 /* index 4 - Q80 */
92 {
93 0xff, 0xd8,
94 0xff, 0xdb, 0x00, 0x84, /* DQT */
95 0,
96 6, 4, 5, 6, 5, 4, 6, 6, 5, 6, 7, 7, 6, 8, 10, 16,
97 10, 10, 9, 9, 10, 20, 14, 15, 12, 16, 23, 20, 24, 24, 23, 20,
98 22, 22, 26, 29, 37, 31, 26, 27, 35, 28, 22, 22, 32, 44, 32, 35,
99 38, 39, 41, 42, 41, 25, 31, 45, 48, 45, 40, 48, 37, 40, 41, 40,
100 1,
101 7, 7, 7, 10, 8, 10, 19, 10, 10, 19, 40, 26, 22, 26, 40, 40,
102 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
103 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
104 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40},
105 /* index 5 - Q85 */
106 {
107 0xff, 0xd8,
108 0xff, 0xdb, 0x00, 0x84, /* DQT */
109 0,
110 5, 3, 4, 4, 4, 3, 5, 4, 4, 4, 5, 5, 5, 6, 7, 12,
111 8, 7, 7, 7, 7, 15, 11, 11, 9, 12, 17, 15, 18, 18, 17, 15,
112 17, 17, 19, 22, 28, 23, 19, 20, 26, 21, 17, 17, 24, 33, 24, 26,
113 29, 29, 31, 31, 31, 19, 23, 34, 36, 34, 30, 36, 28, 30, 31, 30,
114 1,
115 5, 5, 5, 7, 6, 7, 14, 8, 8, 14, 30, 20, 17, 20, 30, 30,
116 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
117 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
118 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30},
119 /* index 6 - 86 */
120 {
121 0xff, 0xd8,
122 0xff, 0xdb, 0x00, 0x84, /* DQT */
123 0,
124 0x04, 0x03, 0x03, 0x04, 0x03, 0x03, 0x04, 0x04,
125 0x04, 0x04, 0x05, 0x05, 0x04, 0x05, 0x07, 0x0B,
126 0x07, 0x07, 0x06, 0x06, 0x07, 0x0E, 0x0A, 0x0A,
127 0x08, 0x0B, 0x10, 0x0E, 0x11, 0x11, 0x10, 0x0E,
128 0x10, 0x0F, 0x12, 0x14, 0x1A, 0x16, 0x12, 0x13,
129 0x18, 0x13, 0x0F, 0x10, 0x16, 0x1F, 0x17, 0x18,
130 0x1B, 0x1B, 0x1D, 0x1D, 0x1D, 0x11, 0x16, 0x20,
131 0x22, 0x1F, 0x1C, 0x22, 0x1A, 0x1C, 0x1D, 0x1C,
132 1,
133 0x05, 0x05, 0x05, 0x07, 0x06, 0x07, 0x0D, 0x07,
134 0x07, 0x0D, 0x1C, 0x12, 0x10, 0x12, 0x1C, 0x1C,
135 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
136 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
137 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
138 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
139 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
140 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
141 },
142 /* index 7 - 88 */
143 {
144 0xff, 0xd8,
145 0xff, 0xdb, 0x00, 0x84, /* DQT */
146 0,
147 0x04, 0x03, 0x03, 0x03, 0x03, 0x02, 0x04, 0x03,
148 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x06, 0x0A,
149 0x06, 0x06, 0x05, 0x05, 0x06, 0x0C, 0x08, 0x09,
150 0x07, 0x0A, 0x0E, 0x0C, 0x0F, 0x0E, 0x0E, 0x0C,
151 0x0D, 0x0D, 0x0F, 0x11, 0x16, 0x13, 0x0F, 0x10,
152 0x15, 0x11, 0x0D, 0x0D, 0x13, 0x1A, 0x13, 0x15,
153 0x17, 0x18, 0x19, 0x19, 0x19, 0x0F, 0x12, 0x1B,
154 0x1D, 0x1B, 0x18, 0x1D, 0x16, 0x18, 0x19, 0x18,
155 1,
156 0x04, 0x04, 0x04, 0x06, 0x05, 0x06, 0x0B, 0x06,
157 0x06, 0x0B, 0x18, 0x10, 0x0D, 0x10, 0x18, 0x18,
158 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
159 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
160 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
161 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
162 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
163 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
164 },
165 /* index 8 - ?? */
166 {
167 0xff, 0xd8,
168 0xff, 0xdb, 0x00, 0x84, /* DQT */
169 0,
170 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
171 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x05,
172 0x03, 0x03, 0x03, 0x03, 0x03, 0x06, 0x04, 0x05,
173 0x04, 0x05, 0x07, 0x06, 0x08, 0x08, 0x07, 0x06,
174 0x07, 0x07, 0x08, 0x09, 0x0C, 0x0A, 0x08, 0x09,
175 0x0B, 0x09, 0x07, 0x07, 0x0A, 0x0E, 0x0A, 0x0B,
176 0x0C, 0x0C, 0x0D, 0x0D, 0x0D, 0x08, 0x0A, 0x0E,
177 0x0F, 0x0E, 0x0D, 0x0F, 0x0C, 0x0D, 0x0D, 0x0C,
178 1,
179 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x06, 0x03,
180 0x03, 0x06, 0x0C, 0x08, 0x07, 0x08, 0x0C, 0x0C,
181 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
182 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
183 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
184 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
185 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
186 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C
187 }
188 };
189
190 /* huffman table + start of SOF0 */
191 static unsigned char huffman[] = {
192 0xff, 0xc4, 0x01, 0xa2,
193 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
194 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
195 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
196 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x01, 0x00, 0x03,
197 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
198 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
199 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
200 0x0a, 0x0b, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03,
201 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00,
202 0x00, 0x01, 0x7d, 0x01, 0x02, 0x03, 0x00, 0x04,
203 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13,
204 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81,
205 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15,
206 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82,
207 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25,
208 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36,
209 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46,
210 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56,
211 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66,
212 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76,
213 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86,
214 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95,
215 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4,
216 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3,
217 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2,
218 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca,
219 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
220 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
221 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5,
222 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0x11, 0x00, 0x02,
223 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
224 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01,
225 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
226 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22,
227 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1,
228 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62,
229 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25,
230 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28,
231 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a,
232 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
233 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a,
234 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
235 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
236 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
237 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
238 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
239 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
240 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
241 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
242 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3,
243 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2,
244 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
245 #ifdef CONEX_CAM
246 /* the Conexant frames start with SOF0 */
247 #else
248 0xff, 0xc0, 0x00, 0x11, /* SOF0 (start of frame 0 */
249 0x08, /* data precision */
250 #endif
251 };
252
253 #ifndef CONEX_CAM
254 /* variable part:
255 * 0x01, 0xe0, height
256 * 0x02, 0x80, width
257 * 0x03, component number
258 * 0x01,
259 * 0x21, samples Y
260 */
261
262 /* end of header */
263 static unsigned char eoh[] = {
264 0x00, /* quant Y */
265 0x02, 0x11, 0x01, /* samples CbCr - quant CbCr */
266 0x03, 0x11, 0x01,
267
268 0xff, 0xda, 0x00, 0x0c, /* SOS (start of scan) */
269 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00
270 };
271 #endif
272
273 /* -- output the JPEG header -- */
jpeg_put_header(struct gspca_dev * gspca_dev,struct gspca_frame * frame,int qindex,int samplesY)274 static void jpeg_put_header(struct gspca_dev *gspca_dev,
275 struct gspca_frame *frame,
276 int qindex,
277 int samplesY)
278 {
279 #ifndef CONEX_CAM
280 unsigned char tmpbuf[8];
281 #endif
282
283 gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
284 (unsigned char *) quant[qindex], sizeof quant[0]);
285 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
286 (unsigned char *) huffman, sizeof huffman);
287 #ifndef CONEX_CAM
288 tmpbuf[0] = gspca_dev->height >> 8;
289 tmpbuf[1] = gspca_dev->height & 0xff;
290 tmpbuf[2] = gspca_dev->width >> 8;
291 tmpbuf[3] = gspca_dev->width & 0xff;
292 tmpbuf[4] = 0x03; /* component number */
293 tmpbuf[5] = 0x01; /* first component */
294 tmpbuf[6] = samplesY;
295 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
296 tmpbuf, 7);
297 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
298 eoh, sizeof eoh);
299 #endif
300 }
301 #endif
302