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1da177e4 LT |
1 | /* |
2 | * USB ViCam WebCam driver | |
3 | * Copyright (c) 2002 Joe Burks (jburks@wavicle.org), | |
4 | * Christopher L Cheney (ccheney@cheney.cx), | |
5 | * Pavel Machek (pavel@suse.cz), | |
6 | * John Tyner (jtyner@cs.ucr.edu), | |
7 | * Monroe Williams (monroe@pobox.com) | |
8 | * | |
9 | * Supports 3COM HomeConnect PC Digital WebCam | |
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 | * (at your option) 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., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | * | |
25 | * This source code is based heavily on the CPiA webcam driver which was | |
26 | * written by Peter Pregler, Scott J. Bertin and Johannes Erdfelt | |
27 | * | |
28 | * Portions of this code were also copied from usbvideo.c | |
29 | * | |
30 | * Special thanks to the the whole team at Sourceforge for help making | |
31 | * this driver become a reality. Notably: | |
32 | * Andy Armstrong who reverse engineered the color encoding and | |
33 | * Pavel Machek and Chris Cheney who worked on reverse engineering the | |
34 | * camera controls and wrote the first generation driver. | |
35 | */ | |
36 | ||
37 | #include <linux/kernel.h> | |
38 | #include <linux/module.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/videodev.h> | |
41 | #include <linux/usb.h> | |
42 | #include <linux/vmalloc.h> | |
43 | #include <linux/slab.h> | |
44 | #include <linux/proc_fs.h> | |
45 | #include "usbvideo.h" | |
46 | ||
47 | // #define VICAM_DEBUG | |
48 | ||
49 | #ifdef VICAM_DEBUG | |
50 | #define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __FUNCTION__, lineno, ##args) | |
51 | #define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args) | |
52 | #else | |
53 | #define DBG(fmn,args...) do {} while(0) | |
54 | #endif | |
55 | ||
56 | #define DRIVER_AUTHOR "Joe Burks, jburks@wavicle.org" | |
57 | #define DRIVER_DESC "ViCam WebCam Driver" | |
58 | ||
59 | /* Define these values to match your device */ | |
60 | #define USB_VICAM_VENDOR_ID 0x04c1 | |
61 | #define USB_VICAM_PRODUCT_ID 0x009d | |
62 | ||
63 | #define VICAM_BYTES_PER_PIXEL 3 | |
64 | #define VICAM_MAX_READ_SIZE (512*242+128) | |
65 | #define VICAM_MAX_FRAME_SIZE (VICAM_BYTES_PER_PIXEL*320*240) | |
66 | #define VICAM_FRAMES 2 | |
67 | ||
68 | #define VICAM_HEADER_SIZE 64 | |
69 | ||
70 | #define clamp( x, l, h ) max_t( __typeof__( x ), \ | |
71 | ( l ), \ | |
72 | min_t( __typeof__( x ), \ | |
73 | ( h ), \ | |
74 | ( x ) ) ) | |
75 | ||
76 | /* Not sure what all the bytes in these char | |
77 | * arrays do, but they're necessary to make | |
78 | * the camera work. | |
79 | */ | |
80 | ||
81 | static unsigned char setup1[] = { | |
82 | 0xB6, 0xC3, 0x1F, 0x00, 0x02, 0x64, 0xE7, 0x67, | |
83 | 0xFD, 0xFF, 0x0E, 0xC0, 0xE7, 0x09, 0xDE, 0x00, | |
84 | 0x8E, 0x00, 0xC0, 0x09, 0x40, 0x03, 0xC0, 0x17, | |
85 | 0x44, 0x03, 0x4B, 0xAF, 0xC0, 0x07, 0x00, 0x00, | |
86 | 0x4B, 0xAF, 0x97, 0xCF, 0x00, 0x00 | |
87 | }; | |
88 | ||
89 | static unsigned char setup2[] = { | |
90 | 0xB6, 0xC3, 0x03, 0x00, 0x03, 0x64, 0x18, 0x00, | |
91 | 0x00, 0x00 | |
92 | }; | |
93 | ||
94 | static unsigned char setup3[] = { | |
95 | 0xB6, 0xC3, 0x01, 0x00, 0x06, 0x64, 0x00, 0x00 | |
96 | }; | |
97 | ||
98 | static unsigned char setup4[] = { | |
99 | 0xB6, 0xC3, 0x8F, 0x06, 0x02, 0x64, 0xE7, 0x07, | |
100 | 0x00, 0x00, 0x08, 0xC0, 0xE7, 0x07, 0x00, 0x00, | |
101 | 0x3E, 0xC0, 0xE7, 0x07, 0x54, 0x01, 0xAA, 0x00, | |
102 | 0xE7, 0x07, 0xC8, 0x05, 0xB6, 0x00, 0xE7, 0x07, | |
103 | 0x42, 0x01, 0xD2, 0x00, 0xE7, 0x07, 0x7C, 0x00, | |
104 | 0x16, 0x00, 0xE7, 0x07, 0x56, 0x00, 0x18, 0x00, | |
105 | 0xE7, 0x07, 0x06, 0x00, 0x92, 0xC0, 0xE7, 0x07, | |
106 | 0x00, 0x00, 0x1E, 0xC0, 0xE7, 0x07, 0xFF, 0xFF, | |
107 | 0x22, 0xC0, 0xE7, 0x07, 0x04, 0x00, 0x24, 0xC0, | |
108 | 0xE7, 0x07, 0xEC, 0x27, 0x28, 0xC0, 0xE7, 0x07, | |
109 | 0x16, 0x01, 0x8E, 0x00, 0xE7, 0x87, 0x01, 0x00, | |
110 | 0x0E, 0xC0, 0x97, 0xCF, 0xD7, 0x09, 0x00, 0xC0, | |
111 | 0xE7, 0x77, 0x01, 0x00, 0x92, 0xC0, 0x09, 0xC1, | |
112 | 0xE7, 0x09, 0xFE, 0x05, 0x24, 0x01, 0xE7, 0x09, | |
113 | 0x04, 0x06, 0x26, 0x01, 0xE7, 0x07, 0x07, 0x00, | |
114 | 0x92, 0xC0, 0xE7, 0x05, 0x00, 0xC0, 0xC0, 0xDF, | |
115 | 0x97, 0xCF, 0x17, 0x00, 0x57, 0x00, 0x17, 0x02, | |
116 | 0xD7, 0x09, 0x00, 0xC0, 0xE7, 0x77, 0x01, 0x00, | |
117 | 0x92, 0xC0, 0x0A, 0xC1, 0xE7, 0x57, 0xFF, 0xFF, | |
118 | 0xFA, 0x05, 0x0D, 0xC0, 0xE7, 0x57, 0x00, 0x00, | |
119 | 0xFA, 0x05, 0x0F, 0xC0, 0x9F, 0xAF, 0xC6, 0x00, | |
120 | 0xE7, 0x05, 0x00, 0xC0, 0xC8, 0x05, 0xC1, 0x05, | |
121 | 0xC0, 0x05, 0xC0, 0xDF, 0x97, 0xCF, 0x27, 0xDA, | |
122 | 0xFA, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x0B, 0x06, | |
123 | 0x73, 0xCF, 0x9F, 0xAF, 0x78, 0x01, 0x9F, 0xAF, | |
124 | 0x1A, 0x03, 0x6E, 0xCF, 0xE7, 0x09, 0xFC, 0x05, | |
125 | 0x24, 0x01, 0xE7, 0x09, 0x02, 0x06, 0x26, 0x01, | |
126 | 0xE7, 0x07, 0x07, 0x00, 0x92, 0xC0, 0xE7, 0x09, | |
127 | 0xFC, 0x05, 0xFE, 0x05, 0xE7, 0x09, 0x02, 0x06, | |
128 | 0x04, 0x06, 0xE7, 0x09, 0x00, 0x06, 0xFC, 0x05, | |
129 | 0xE7, 0x09, 0xFE, 0x05, 0x00, 0x06, 0x27, 0xDA, | |
130 | 0xFA, 0x05, 0xE7, 0x57, 0x01, 0x00, 0xFA, 0x05, | |
131 | 0x02, 0xCA, 0x04, 0xC0, 0x97, 0xCF, 0x9F, 0xAF, | |
132 | 0x66, 0x05, 0x97, 0xCF, 0xE7, 0x07, 0x40, 0x00, | |
133 | 0x02, 0x06, 0xC8, 0x09, 0xFC, 0x05, 0x9F, 0xAF, | |
134 | 0xDA, 0x02, 0x97, 0xCF, 0xCF, 0x17, 0x02, 0x00, | |
135 | 0xEF, 0x57, 0x81, 0x00, 0x09, 0x06, 0x9F, 0xA0, | |
136 | 0xB6, 0x01, 0xEF, 0x57, 0x80, 0x00, 0x09, 0x06, | |
137 | 0x9F, 0xA0, 0x40, 0x02, 0xEF, 0x57, 0x01, 0x00, | |
138 | 0x0B, 0x06, 0x9F, 0xA0, 0x46, 0x03, 0xE7, 0x07, | |
139 | 0x01, 0x00, 0x0A, 0xC0, 0x46, 0xAF, 0x47, 0xAF, | |
140 | 0x9F, 0xAF, 0x40, 0x02, 0xE7, 0x07, 0x2E, 0x00, | |
141 | 0x0A, 0xC0, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06, | |
142 | 0x97, 0xCF, 0x00, 0x0E, 0x01, 0x00, 0xC0, 0x57, | |
143 | 0x51, 0x00, 0x9F, 0xC0, 0x9E, 0x02, 0xC0, 0x57, | |
144 | 0x50, 0x00, 0x20, 0xC0, 0xC0, 0x57, 0x55, 0x00, | |
145 | 0x12, 0xC0, 0xC0, 0x57, 0x56, 0x00, 0x9F, 0xC0, | |
146 | 0x72, 0x02, 0x9F, 0xCF, 0xD6, 0x02, 0xC1, 0x0B, | |
147 | 0x08, 0x06, 0x01, 0xD0, 0x6F, 0x90, 0x08, 0x06, | |
148 | 0xC0, 0x07, 0x08, 0x00, 0xC1, 0x0B, 0x08, 0x06, | |
149 | 0x9F, 0xAF, 0x28, 0x05, 0x97, 0xCF, 0x2F, 0x0E, | |
150 | 0x02, 0x00, 0x08, 0x06, 0xC0, 0x07, 0x08, 0x00, | |
151 | 0xC1, 0x0B, 0x08, 0x06, 0x9F, 0xAF, 0x28, 0x05, | |
152 | 0x9F, 0xCF, 0xD6, 0x02, 0x2F, 0x0E, 0x02, 0x00, | |
153 | 0x09, 0x06, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06, | |
154 | 0x9F, 0xCF, 0xD6, 0x02, 0xEF, 0x67, 0x7F, 0xFF, | |
155 | 0x09, 0x06, 0xE7, 0x67, 0xFF, 0xFD, 0x22, 0xC0, | |
156 | 0xE7, 0x67, 0xEF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, | |
157 | 0x10, 0x00, 0x28, 0xC0, 0x9F, 0xAF, 0xB8, 0x05, | |
158 | 0xE7, 0x87, 0xE0, 0x21, 0x24, 0xC0, 0x9F, 0xAF, | |
159 | 0xA8, 0x05, 0xE7, 0x87, 0x08, 0x00, 0x24, 0xC0, | |
160 | 0xE7, 0x67, 0xDF, 0xFF, 0x24, 0xC0, 0xC8, 0x07, | |
161 | 0x0A, 0x00, 0xC0, 0x07, 0x00, 0x00, 0xC1, 0x07, | |
162 | 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0x9F, 0xAF, | |
163 | 0xB8, 0x05, 0xC0, 0x07, 0x9E, 0x00, 0x9F, 0xAF, | |
164 | 0x44, 0x05, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, | |
165 | 0xC0, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01, | |
166 | 0x24, 0xC0, 0xC0, 0x77, 0x00, 0x02, 0x0F, 0xC1, | |
167 | 0xE7, 0x67, 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x67, | |
168 | 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x08, 0x00, | |
169 | 0x24, 0xC0, 0x08, 0xDA, 0x5E, 0xC1, 0xEF, 0x07, | |
170 | 0x80, 0x00, 0x09, 0x06, 0x97, 0xCF, 0xEF, 0x07, | |
171 | 0x01, 0x00, 0x0A, 0x06, 0x97, 0xCF, 0xEF, 0x07, | |
172 | 0x00, 0x00, 0x0B, 0x06, 0xEF, 0x07, 0x00, 0x00, | |
173 | 0x0A, 0x06, 0xEF, 0x67, 0x7F, 0xFF, 0x09, 0x06, | |
174 | 0xEF, 0x07, 0x00, 0x00, 0x0D, 0x06, 0xE7, 0x67, | |
175 | 0xEF, 0xFF, 0x28, 0xC0, 0xE7, 0x67, 0x17, 0xD8, | |
176 | 0x24, 0xC0, 0xE7, 0x07, 0x00, 0x00, 0x1E, 0xC0, | |
177 | 0xE7, 0x07, 0xFF, 0xFF, 0x22, 0xC0, 0x97, 0xCF, | |
178 | 0xC8, 0x07, 0x0E, 0x06, 0x9F, 0xAF, 0xDA, 0x02, | |
179 | 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07, | |
180 | 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0x0E, 0x06, | |
181 | 0xF4, 0x05, 0xE7, 0x07, 0xD6, 0x02, 0xF8, 0x05, | |
182 | 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80, | |
183 | 0x50, 0xAF, 0x97, 0xCF, 0x2F, 0x0C, 0x02, 0x00, | |
184 | 0x07, 0x06, 0x2F, 0x0C, 0x04, 0x00, 0x06, 0x06, | |
185 | 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07, | |
186 | 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0xE2, 0x05, | |
187 | 0xF4, 0x05, 0xE7, 0x07, 0xCE, 0x02, 0xF8, 0x05, | |
188 | 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80, | |
189 | 0x51, 0xAF, 0x97, 0xCF, 0x9F, 0xAF, 0x66, 0x04, | |
190 | 0x9F, 0xAF, 0x1A, 0x03, 0x59, 0xAF, 0x97, 0xCF, | |
191 | 0xC0, 0x07, 0x0E, 0x00, 0xC1, 0x0B, 0x0C, 0x06, | |
192 | 0x41, 0xD1, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, | |
193 | 0x3C, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0x68, 0x00, | |
194 | 0xC0, 0x07, 0x3B, 0x00, 0x9F, 0xAF, 0x44, 0x05, | |
195 | 0x6F, 0x00, 0x0C, 0x06, 0x68, 0x00, 0xE0, 0x07, | |
196 | 0x04, 0x01, 0xE8, 0x0B, 0x0A, 0x06, 0xE8, 0x07, | |
197 | 0x00, 0x00, 0xE0, 0x07, 0x00, 0x02, 0xE0, 0x07, | |
198 | 0xEC, 0x01, 0xE0, 0x07, 0xFC, 0xFF, 0x97, 0xCF, | |
199 | 0xE7, 0x07, 0xFF, 0xFF, 0xFA, 0x05, 0xEF, 0x07, | |
200 | 0x00, 0x00, 0x0B, 0x06, 0xE7, 0x07, 0x0E, 0x06, | |
201 | 0x24, 0x01, 0xE7, 0x07, 0x0E, 0x06, 0xFE, 0x05, | |
202 | 0xE7, 0x07, 0x40, 0x00, 0x26, 0x01, 0xE7, 0x07, | |
203 | 0x40, 0x00, 0x04, 0x06, 0xE7, 0x07, 0x07, 0x00, | |
204 | 0x92, 0xC0, 0x97, 0xCF, 0xEF, 0x07, 0x02, 0x00, | |
205 | 0x0B, 0x06, 0x9F, 0xAF, 0x78, 0x01, 0xEF, 0x77, | |
206 | 0x80, 0x00, 0x07, 0x06, 0x9F, 0xC0, 0x14, 0x04, | |
207 | 0xEF, 0x77, 0x01, 0x00, 0x07, 0x06, 0x37, 0xC0, | |
208 | 0xEF, 0x77, 0x01, 0x00, 0x0D, 0x06, 0x0F, 0xC1, | |
209 | 0xEF, 0x07, 0x01, 0x00, 0x0D, 0x06, 0xC0, 0x07, | |
210 | 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, 0x9F, 0xAF, | |
211 | 0x28, 0x05, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07, | |
212 | 0x02, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, | |
213 | 0xFF, 0x4F, 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, | |
214 | 0x38, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x77, | |
215 | 0x03, 0x00, 0x02, 0xC1, 0x08, 0xDA, 0x75, 0xC1, | |
216 | 0xC1, 0x77, 0x01, 0x00, 0x0A, 0xC1, 0xC0, 0x07, | |
217 | 0x01, 0x00, 0xC1, 0x07, 0x02, 0x00, 0x9F, 0xAF, | |
218 | 0x28, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x06, 0x06, | |
219 | 0x2C, 0xCF, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07, | |
220 | 0x04, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xEF, 0x07, | |
221 | 0x00, 0x00, 0x06, 0x06, 0x22, 0xCF, 0xEF, 0x07, | |
222 | 0x00, 0x00, 0x0D, 0x06, 0xEF, 0x57, 0x01, 0x00, | |
223 | 0x06, 0x06, 0x1B, 0xC0, 0xC0, 0x07, 0x01, 0x00, | |
224 | 0xC1, 0x07, 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, | |
225 | 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, | |
226 | 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, 0xFF, 0x4F, | |
227 | 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, 0x38, 0x00, | |
228 | 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x67, 0x03, 0x00, | |
229 | 0xC1, 0x57, 0x03, 0x00, 0x02, 0xC0, 0x08, 0xDA, | |
230 | 0x73, 0xC1, 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, | |
231 | 0x12, 0x00, 0xEF, 0x57, 0x00, 0x00, 0x06, 0x06, | |
232 | 0x02, 0xC0, 0xC1, 0x07, 0x23, 0x00, 0x9F, 0xAF, | |
233 | 0x28, 0x05, 0xC0, 0x07, 0x14, 0x00, 0xC1, 0x0B, | |
234 | 0xEA, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, | |
235 | 0x3E, 0x00, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x09, | |
236 | 0xE4, 0x05, 0xFA, 0x05, 0x27, 0xD8, 0xFA, 0x05, | |
237 | 0xE7, 0x07, 0x0E, 0x06, 0xFC, 0x05, 0xE7, 0x07, | |
238 | 0x4E, 0x06, 0x00, 0x06, 0xE7, 0x07, 0x40, 0x00, | |
239 | 0x02, 0x06, 0x9F, 0xAF, 0x66, 0x05, 0x9F, 0xAF, | |
240 | 0xC6, 0x00, 0x97, 0xCF, 0xC1, 0x0B, 0xE2, 0x05, | |
241 | 0x41, 0xD0, 0x01, 0xD2, 0xC1, 0x17, 0x23, 0x00, | |
242 | 0x9F, 0xAF, 0xDC, 0x04, 0xC0, 0x07, 0x04, 0x00, | |
243 | 0xC1, 0x0B, 0xE3, 0x05, 0x9F, 0xAF, 0x28, 0x05, | |
244 | 0xC0, 0x07, 0x06, 0x00, 0xC1, 0x09, 0xE6, 0x05, | |
245 | 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x07, 0x00, | |
246 | 0xC1, 0x09, 0xE6, 0x05, 0xC1, 0xD1, 0x9F, 0xAF, | |
247 | 0x28, 0x05, 0xC0, 0x07, 0x0B, 0x00, 0xC1, 0x09, | |
248 | 0xE8, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, | |
249 | 0x0C, 0x00, 0xC1, 0x09, 0xE8, 0x05, 0xC1, 0xD1, | |
250 | 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0D, 0x00, | |
251 | 0xC1, 0x07, 0x09, 0x00, 0x9F, 0xAF, 0x28, 0x05, | |
252 | 0xC0, 0x07, 0x03, 0x00, 0xC1, 0x07, 0x32, 0x00, | |
253 | 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0F, 0x00, | |
254 | 0xC1, 0x07, 0x00, 0x00, 0x9F, 0xAF, 0x28, 0x05, | |
255 | 0x97, 0xCF, 0xE7, 0x67, 0xFF, 0xD9, 0x24, 0xC0, | |
256 | 0xC8, 0x07, 0x0A, 0x00, 0x40, 0x00, 0xC0, 0x67, | |
257 | 0x00, 0x02, 0x27, 0x80, 0x24, 0xC0, 0xE7, 0x87, | |
258 | 0x00, 0x04, 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xF9, | |
259 | 0x24, 0xC0, 0x01, 0xD2, 0x08, 0xDA, 0x72, 0xC1, | |
260 | 0xE7, 0x87, 0x00, 0x20, 0x24, 0xC0, 0x97, 0xCF, | |
261 | 0x27, 0x00, 0x1E, 0xC0, 0xE7, 0x87, 0xFF, 0x00, | |
262 | 0x22, 0xC0, 0xE7, 0x67, 0x7F, 0xFF, 0x24, 0xC0, | |
263 | 0xE7, 0x87, 0x80, 0x00, 0x24, 0xC0, 0xE7, 0x87, | |
264 | 0x80, 0x00, 0x24, 0xC0, 0x97, 0xCF, 0x9F, 0xAF, | |
265 | 0x0A, 0x05, 0x67, 0x00, 0x1E, 0xC0, 0xE7, 0x67, | |
266 | 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, | |
267 | 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, | |
268 | 0x97, 0xCF, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x67, | |
269 | 0x00, 0xFF, 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, | |
270 | 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, | |
271 | 0xC1, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01, | |
272 | 0x24, 0xC0, 0x97, 0xCF, 0xC0, 0x07, 0x40, 0x00, | |
273 | 0xC8, 0x09, 0xFC, 0x05, 0xE7, 0x67, 0x00, 0xFF, | |
274 | 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, | |
275 | 0xE7, 0x67, 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x67, | |
276 | 0xBF, 0xFF, 0x24, 0xC0, 0x00, 0xDA, 0xE8, 0x09, | |
277 | 0x20, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, | |
278 | 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, 0x00, 0xDA, | |
279 | 0xE8, 0x09, 0x20, 0xC0, 0x6D, 0xC1, 0xE7, 0x87, | |
280 | 0x00, 0x01, 0x24, 0xC0, 0x97, 0xCF, 0xE7, 0x07, | |
281 | 0x32, 0x00, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80, | |
282 | 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0xE7, 0x07, | |
283 | 0x20, 0x4E, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80, | |
284 | 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0x09, 0x02, | |
285 | 0x19, 0x00, 0x01, 0x01, 0x00, 0x80, 0x96, 0x09, | |
286 | 0x04, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, | |
287 | 0x07, 0x05, 0x81, 0x02, 0x40, 0x00, 0x00, 0x00, | |
288 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
289 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
290 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
291 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
292 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
293 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
294 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
295 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
296 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
297 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
298 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
299 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
300 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
301 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
302 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
303 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
304 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
305 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
306 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
307 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
308 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
309 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
310 | }; | |
311 | ||
312 | static unsigned char setup5[] = { | |
313 | 0xB6, 0xC3, 0x2F, 0x01, 0x03, 0x64, 0x0E, 0x00, | |
314 | 0x14, 0x00, 0x1A, 0x00, 0x20, 0x00, 0x26, 0x00, | |
315 | 0x4A, 0x00, 0x64, 0x00, 0x6A, 0x00, 0x92, 0x00, | |
316 | 0x9A, 0x00, 0xA0, 0x00, 0xB2, 0x00, 0xB8, 0x00, | |
317 | 0xBE, 0x00, 0xC2, 0x00, 0xC8, 0x00, 0xCE, 0x00, | |
318 | 0xDC, 0x00, 0xDA, 0x00, 0xE2, 0x00, 0xE0, 0x00, | |
319 | 0xE8, 0x00, 0xE6, 0x00, 0xEE, 0x00, 0xEC, 0x00, | |
320 | 0xF2, 0x00, 0xF8, 0x00, 0x02, 0x01, 0x0A, 0x01, | |
321 | 0x0E, 0x01, 0x12, 0x01, 0x1E, 0x01, 0x22, 0x01, | |
322 | 0x28, 0x01, 0x2C, 0x01, 0x32, 0x01, 0x36, 0x01, | |
323 | 0x44, 0x01, 0x50, 0x01, 0x5E, 0x01, 0x72, 0x01, | |
324 | 0x76, 0x01, 0x7A, 0x01, 0x80, 0x01, 0x88, 0x01, | |
325 | 0x8C, 0x01, 0x94, 0x01, 0x9C, 0x01, 0xA0, 0x01, | |
326 | 0xA4, 0x01, 0xAA, 0x01, 0xB0, 0x01, 0xB4, 0x01, | |
327 | 0xBA, 0x01, 0xD0, 0x01, 0xDA, 0x01, 0xF6, 0x01, | |
328 | 0xFA, 0x01, 0x02, 0x02, 0x34, 0x02, 0x3C, 0x02, | |
329 | 0x44, 0x02, 0x4A, 0x02, 0x50, 0x02, 0x56, 0x02, | |
330 | 0x74, 0x02, 0x78, 0x02, 0x7E, 0x02, 0x84, 0x02, | |
331 | 0x8A, 0x02, 0x88, 0x02, 0x90, 0x02, 0x8E, 0x02, | |
332 | 0x94, 0x02, 0xA2, 0x02, 0xA8, 0x02, 0xAE, 0x02, | |
333 | 0xB4, 0x02, 0xBA, 0x02, 0xB8, 0x02, 0xC0, 0x02, | |
334 | 0xBE, 0x02, 0xC4, 0x02, 0xD0, 0x02, 0xD4, 0x02, | |
335 | 0xE0, 0x02, 0xE6, 0x02, 0xEE, 0x02, 0xF8, 0x02, | |
336 | 0xFC, 0x02, 0x06, 0x03, 0x1E, 0x03, 0x24, 0x03, | |
337 | 0x28, 0x03, 0x30, 0x03, 0x2E, 0x03, 0x3C, 0x03, | |
338 | 0x4A, 0x03, 0x4E, 0x03, 0x54, 0x03, 0x58, 0x03, | |
339 | 0x5E, 0x03, 0x66, 0x03, 0x6E, 0x03, 0x7A, 0x03, | |
340 | 0x86, 0x03, 0x8E, 0x03, 0x96, 0x03, 0xB2, 0x03, | |
341 | 0xB8, 0x03, 0xC6, 0x03, 0xCC, 0x03, 0xD4, 0x03, | |
342 | 0xDA, 0x03, 0xE8, 0x03, 0xF4, 0x03, 0xFC, 0x03, | |
343 | 0x04, 0x04, 0x20, 0x04, 0x2A, 0x04, 0x32, 0x04, | |
344 | 0x36, 0x04, 0x3E, 0x04, 0x44, 0x04, 0x42, 0x04, | |
345 | 0x48, 0x04, 0x4E, 0x04, 0x4C, 0x04, 0x54, 0x04, | |
346 | 0x52, 0x04, 0x5A, 0x04, 0x5E, 0x04, 0x62, 0x04, | |
347 | 0x68, 0x04, 0x74, 0x04, 0x7C, 0x04, 0x80, 0x04, | |
348 | 0x88, 0x04, 0x8C, 0x04, 0x94, 0x04, 0x9A, 0x04, | |
349 | 0xA2, 0x04, 0xA6, 0x04, 0xAE, 0x04, 0xB4, 0x04, | |
350 | 0xC0, 0x04, 0xCC, 0x04, 0xD8, 0x04, 0x2A, 0x05, | |
351 | 0x46, 0x05, 0x6C, 0x05, 0x00, 0x00 | |
352 | }; | |
353 | ||
354 | /* rvmalloc / rvfree copied from usbvideo.c | |
355 | * | |
356 | * Not sure why these are not yet non-statics which I can reference through | |
357 | * usbvideo.h the same as it is in 2.4.20. I bet this will get fixed sometime | |
358 | * in the future. | |
359 | * | |
360 | */ | |
361 | static void *rvmalloc(unsigned long size) | |
362 | { | |
363 | void *mem; | |
364 | unsigned long adr; | |
365 | ||
366 | size = PAGE_ALIGN(size); | |
367 | mem = vmalloc_32(size); | |
368 | if (!mem) | |
369 | return NULL; | |
370 | ||
371 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ | |
372 | adr = (unsigned long) mem; | |
373 | while (size > 0) { | |
374 | SetPageReserved(vmalloc_to_page((void *)adr)); | |
375 | adr += PAGE_SIZE; | |
376 | size -= PAGE_SIZE; | |
377 | } | |
378 | ||
379 | return mem; | |
380 | } | |
381 | ||
382 | static void rvfree(void *mem, unsigned long size) | |
383 | { | |
384 | unsigned long adr; | |
385 | ||
386 | if (!mem) | |
387 | return; | |
388 | ||
389 | adr = (unsigned long) mem; | |
390 | while ((long) size > 0) { | |
391 | ClearPageReserved(vmalloc_to_page((void *)adr)); | |
392 | adr += PAGE_SIZE; | |
393 | size -= PAGE_SIZE; | |
394 | } | |
395 | vfree(mem); | |
396 | } | |
397 | ||
398 | struct vicam_camera { | |
399 | u16 shutter_speed; // capture shutter speed | |
400 | u16 gain; // capture gain | |
401 | ||
402 | u8 *raw_image; // raw data captured from the camera | |
403 | u8 *framebuf; // processed data in RGB24 format | |
404 | u8 *cntrlbuf; // area used to send control msgs | |
405 | ||
406 | struct video_device vdev; // v4l video device | |
407 | struct usb_device *udev; // usb device | |
408 | ||
409 | /* guard against simultaneous accesses to the camera */ | |
410 | struct semaphore cam_lock; | |
411 | ||
412 | int is_initialized; | |
413 | u8 open_count; | |
414 | u8 bulkEndpoint; | |
415 | int needsDummyRead; | |
416 | ||
417 | #if defined(CONFIG_VIDEO_PROC_FS) | |
418 | struct proc_dir_entry *proc_dir; | |
419 | #endif | |
420 | ||
421 | }; | |
422 | ||
423 | static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id); | |
424 | static void vicam_disconnect(struct usb_interface *intf); | |
425 | static void read_frame(struct vicam_camera *cam, int framenum); | |
426 | static void vicam_decode_color(const u8 *, u8 *); | |
427 | ||
428 | static int __send_control_msg(struct vicam_camera *cam, | |
429 | u8 request, | |
430 | u16 value, | |
431 | u16 index, | |
432 | unsigned char *cp, | |
433 | u16 size) | |
434 | { | |
435 | int status; | |
436 | ||
437 | /* cp must be memory that has been allocated by kmalloc */ | |
438 | ||
439 | status = usb_control_msg(cam->udev, | |
440 | usb_sndctrlpipe(cam->udev, 0), | |
441 | request, | |
442 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
443 | USB_RECIP_DEVICE, value, index, | |
444 | cp, size, 1000); | |
445 | ||
446 | status = min(status, 0); | |
447 | ||
448 | if (status < 0) { | |
449 | printk(KERN_INFO "Failed sending control message, error %d.\n", | |
450 | status); | |
451 | } | |
452 | ||
453 | return status; | |
454 | } | |
455 | ||
456 | static int send_control_msg(struct vicam_camera *cam, | |
457 | u8 request, | |
458 | u16 value, | |
459 | u16 index, | |
460 | unsigned char *cp, | |
461 | u16 size) | |
462 | { | |
463 | int status = -ENODEV; | |
464 | down(&cam->cam_lock); | |
465 | if (cam->udev) { | |
466 | status = __send_control_msg(cam, request, value, | |
467 | index, cp, size); | |
468 | } | |
469 | up(&cam->cam_lock); | |
470 | return status; | |
471 | } | |
472 | static int | |
473 | initialize_camera(struct vicam_camera *cam) | |
474 | { | |
475 | const struct { | |
476 | u8 *data; | |
477 | u32 size; | |
478 | } firmware[] = { | |
479 | { .data = setup1, .size = sizeof(setup1) }, | |
480 | { .data = setup2, .size = sizeof(setup2) }, | |
481 | { .data = setup3, .size = sizeof(setup3) }, | |
482 | { .data = setup4, .size = sizeof(setup4) }, | |
483 | { .data = setup5, .size = sizeof(setup5) }, | |
484 | { .data = setup3, .size = sizeof(setup3) }, | |
485 | { .data = NULL, .size = 0 } | |
486 | }; | |
487 | ||
488 | int err, i; | |
489 | ||
490 | for (i = 0, err = 0; firmware[i].data && !err; i++) { | |
491 | memcpy(cam->cntrlbuf, firmware[i].data, firmware[i].size); | |
492 | ||
493 | err = send_control_msg(cam, 0xff, 0, 0, | |
494 | cam->cntrlbuf, firmware[i].size); | |
495 | } | |
496 | ||
497 | return err; | |
498 | } | |
499 | ||
500 | static int | |
501 | set_camera_power(struct vicam_camera *cam, int state) | |
502 | { | |
503 | int status; | |
504 | ||
505 | if ((status = send_control_msg(cam, 0x50, state, 0, NULL, 0)) < 0) | |
506 | return status; | |
507 | ||
508 | if (state) { | |
509 | send_control_msg(cam, 0x55, 1, 0, NULL, 0); | |
510 | } | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | static int | |
516 | vicam_ioctl(struct inode *inode, struct file *file, unsigned int ioctlnr, unsigned long arg) | |
517 | { | |
518 | void __user *user_arg = (void __user *)arg; | |
519 | struct vicam_camera *cam = file->private_data; | |
520 | int retval = 0; | |
521 | ||
522 | if (!cam) | |
523 | return -ENODEV; | |
524 | ||
525 | switch (ioctlnr) { | |
526 | /* query capabilities */ | |
527 | case VIDIOCGCAP: | |
528 | { | |
529 | struct video_capability b; | |
530 | ||
531 | DBG("VIDIOCGCAP\n"); | |
532 | memset(&b, 0, sizeof(b)); | |
533 | strcpy(b.name, "ViCam-based Camera"); | |
534 | b.type = VID_TYPE_CAPTURE; | |
535 | b.channels = 1; | |
536 | b.audios = 0; | |
537 | b.maxwidth = 320; /* VIDEOSIZE_CIF */ | |
538 | b.maxheight = 240; | |
539 | b.minwidth = 320; /* VIDEOSIZE_48_48 */ | |
540 | b.minheight = 240; | |
541 | ||
542 | if (copy_to_user(user_arg, &b, sizeof(b))) | |
543 | retval = -EFAULT; | |
544 | ||
545 | break; | |
546 | } | |
547 | /* get/set video source - we are a camera and nothing else */ | |
548 | case VIDIOCGCHAN: | |
549 | { | |
550 | struct video_channel v; | |
551 | ||
552 | DBG("VIDIOCGCHAN\n"); | |
553 | if (copy_from_user(&v, user_arg, sizeof(v))) { | |
554 | retval = -EFAULT; | |
555 | break; | |
556 | } | |
557 | if (v.channel != 0) { | |
558 | retval = -EINVAL; | |
559 | break; | |
560 | } | |
561 | ||
562 | v.channel = 0; | |
563 | strcpy(v.name, "Camera"); | |
564 | v.tuners = 0; | |
565 | v.flags = 0; | |
566 | v.type = VIDEO_TYPE_CAMERA; | |
567 | v.norm = 0; | |
568 | ||
569 | if (copy_to_user(user_arg, &v, sizeof(v))) | |
570 | retval = -EFAULT; | |
571 | break; | |
572 | } | |
573 | ||
574 | case VIDIOCSCHAN: | |
575 | { | |
576 | int v; | |
577 | ||
578 | if (copy_from_user(&v, user_arg, sizeof(v))) | |
579 | retval = -EFAULT; | |
580 | DBG("VIDIOCSCHAN %d\n", v); | |
581 | ||
582 | if (retval == 0 && v != 0) | |
583 | retval = -EINVAL; | |
584 | ||
585 | break; | |
586 | } | |
587 | ||
588 | /* image properties */ | |
589 | case VIDIOCGPICT: | |
590 | { | |
591 | struct video_picture vp; | |
592 | DBG("VIDIOCGPICT\n"); | |
593 | memset(&vp, 0, sizeof (struct video_picture)); | |
594 | vp.brightness = cam->gain << 8; | |
595 | vp.depth = 24; | |
596 | vp.palette = VIDEO_PALETTE_RGB24; | |
597 | if (copy_to_user(user_arg, &vp, sizeof (struct video_picture))) | |
598 | retval = -EFAULT; | |
599 | break; | |
600 | } | |
601 | ||
602 | case VIDIOCSPICT: | |
603 | { | |
604 | struct video_picture vp; | |
605 | ||
606 | if (copy_from_user(&vp, user_arg, sizeof(vp))) { | |
607 | retval = -EFAULT; | |
608 | break; | |
609 | } | |
610 | ||
611 | DBG("VIDIOCSPICT depth = %d, pal = %d\n", vp.depth, | |
612 | vp.palette); | |
613 | ||
614 | cam->gain = vp.brightness >> 8; | |
615 | ||
616 | if (vp.depth != 24 | |
617 | || vp.palette != VIDEO_PALETTE_RGB24) | |
618 | retval = -EINVAL; | |
619 | ||
620 | break; | |
621 | } | |
622 | ||
623 | /* get/set capture window */ | |
624 | case VIDIOCGWIN: | |
625 | { | |
626 | struct video_window vw; | |
627 | vw.x = 0; | |
628 | vw.y = 0; | |
629 | vw.width = 320; | |
630 | vw.height = 240; | |
631 | vw.chromakey = 0; | |
632 | vw.flags = 0; | |
633 | vw.clips = NULL; | |
634 | vw.clipcount = 0; | |
635 | ||
636 | DBG("VIDIOCGWIN\n"); | |
637 | ||
638 | if (copy_to_user(user_arg, (void *)&vw, sizeof(vw))) | |
639 | retval = -EFAULT; | |
640 | ||
641 | // I'm not sure what the deal with a capture window is, it is very poorly described | |
642 | // in the doc. So I won't support it now. | |
643 | break; | |
644 | } | |
645 | ||
646 | case VIDIOCSWIN: | |
647 | { | |
648 | ||
649 | struct video_window vw; | |
650 | ||
651 | if (copy_from_user(&vw, user_arg, sizeof(vw))) { | |
652 | retval = -EFAULT; | |
653 | break; | |
654 | } | |
655 | ||
656 | DBG("VIDIOCSWIN %d x %d\n", vw.width, vw.height); | |
657 | ||
658 | if ( vw.width != 320 || vw.height != 240 ) | |
659 | retval = -EFAULT; | |
660 | ||
661 | break; | |
662 | } | |
663 | ||
664 | /* mmap interface */ | |
665 | case VIDIOCGMBUF: | |
666 | { | |
667 | struct video_mbuf vm; | |
668 | int i; | |
669 | ||
670 | DBG("VIDIOCGMBUF\n"); | |
671 | memset(&vm, 0, sizeof (vm)); | |
672 | vm.size = | |
673 | VICAM_MAX_FRAME_SIZE * VICAM_FRAMES; | |
674 | vm.frames = VICAM_FRAMES; | |
675 | for (i = 0; i < VICAM_FRAMES; i++) | |
676 | vm.offsets[i] = VICAM_MAX_FRAME_SIZE * i; | |
677 | ||
678 | if (copy_to_user(user_arg, (void *)&vm, sizeof(vm))) | |
679 | retval = -EFAULT; | |
680 | ||
681 | break; | |
682 | } | |
683 | ||
684 | case VIDIOCMCAPTURE: | |
685 | { | |
686 | struct video_mmap vm; | |
687 | // int video_size; | |
688 | ||
689 | if (copy_from_user((void *)&vm, user_arg, sizeof(vm))) { | |
690 | retval = -EFAULT; | |
691 | break; | |
692 | } | |
693 | ||
694 | DBG("VIDIOCMCAPTURE frame=%d, height=%d, width=%d, format=%d.\n",vm.frame,vm.width,vm.height,vm.format); | |
695 | ||
696 | if ( vm.frame >= VICAM_FRAMES || vm.format != VIDEO_PALETTE_RGB24 ) | |
697 | retval = -EINVAL; | |
698 | ||
699 | // in theory right here we'd start the image capturing | |
700 | // (fill in a bulk urb and submit it asynchronously) | |
701 | // | |
702 | // Instead we're going to do a total hack job for now and | |
703 | // retrieve the frame in VIDIOCSYNC | |
704 | ||
705 | break; | |
706 | } | |
707 | ||
708 | case VIDIOCSYNC: | |
709 | { | |
710 | int frame; | |
711 | ||
712 | if (copy_from_user((void *)&frame, user_arg, sizeof(int))) { | |
713 | retval = -EFAULT; | |
714 | break; | |
715 | } | |
716 | DBG("VIDIOCSYNC: %d\n", frame); | |
717 | ||
718 | read_frame(cam, frame); | |
719 | vicam_decode_color(cam->raw_image, | |
720 | cam->framebuf + | |
721 | frame * VICAM_MAX_FRAME_SIZE ); | |
722 | ||
723 | break; | |
724 | } | |
725 | ||
726 | /* pointless to implement overlay with this camera */ | |
727 | case VIDIOCCAPTURE: | |
728 | case VIDIOCGFBUF: | |
729 | case VIDIOCSFBUF: | |
730 | case VIDIOCKEY: | |
731 | retval = -EINVAL; | |
732 | break; | |
733 | ||
734 | /* tuner interface - we have none */ | |
735 | case VIDIOCGTUNER: | |
736 | case VIDIOCSTUNER: | |
737 | case VIDIOCGFREQ: | |
738 | case VIDIOCSFREQ: | |
739 | retval = -EINVAL; | |
740 | break; | |
741 | ||
742 | /* audio interface - we have none */ | |
743 | case VIDIOCGAUDIO: | |
744 | case VIDIOCSAUDIO: | |
745 | retval = -EINVAL; | |
746 | break; | |
747 | default: | |
748 | retval = -ENOIOCTLCMD; | |
749 | break; | |
750 | } | |
751 | ||
752 | return retval; | |
753 | } | |
754 | ||
755 | static int | |
756 | vicam_open(struct inode *inode, struct file *file) | |
757 | { | |
758 | struct video_device *dev = video_devdata(file); | |
759 | struct vicam_camera *cam = | |
760 | (struct vicam_camera *) dev->priv; | |
761 | DBG("open\n"); | |
762 | ||
763 | if (!cam) { | |
764 | printk(KERN_ERR | |
765 | "vicam video_device improperly initialized"); | |
766 | } | |
767 | ||
768 | /* the videodev_lock held above us protects us from | |
769 | * simultaneous opens...for now. we probably shouldn't | |
770 | * rely on this fact forever. | |
771 | */ | |
772 | ||
773 | if (cam->open_count > 0) { | |
774 | printk(KERN_INFO | |
775 | "vicam_open called on already opened camera"); | |
776 | return -EBUSY; | |
777 | } | |
778 | ||
779 | cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL); | |
780 | if (!cam->raw_image) { | |
781 | return -ENOMEM; | |
782 | } | |
783 | ||
784 | cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); | |
785 | if (!cam->framebuf) { | |
786 | kfree(cam->raw_image); | |
787 | return -ENOMEM; | |
788 | } | |
789 | ||
790 | cam->cntrlbuf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
791 | if (!cam->cntrlbuf) { | |
792 | kfree(cam->raw_image); | |
793 | rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); | |
794 | return -ENOMEM; | |
795 | } | |
796 | ||
797 | // First upload firmware, then turn the camera on | |
798 | ||
799 | if (!cam->is_initialized) { | |
800 | initialize_camera(cam); | |
801 | ||
802 | cam->is_initialized = 1; | |
803 | } | |
804 | ||
805 | set_camera_power(cam, 1); | |
806 | ||
807 | cam->needsDummyRead = 1; | |
808 | cam->open_count++; | |
809 | ||
810 | file->private_data = cam; | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | static int | |
816 | vicam_close(struct inode *inode, struct file *file) | |
817 | { | |
818 | struct vicam_camera *cam = file->private_data; | |
819 | int open_count; | |
820 | struct usb_device *udev; | |
821 | ||
822 | DBG("close\n"); | |
823 | ||
824 | /* it's not the end of the world if | |
825 | * we fail to turn the camera off. | |
826 | */ | |
827 | ||
828 | set_camera_power(cam, 0); | |
829 | ||
830 | kfree(cam->raw_image); | |
831 | rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); | |
832 | kfree(cam->cntrlbuf); | |
833 | ||
834 | down(&cam->cam_lock); | |
835 | ||
836 | cam->open_count--; | |
837 | open_count = cam->open_count; | |
838 | udev = cam->udev; | |
839 | ||
840 | up(&cam->cam_lock); | |
841 | ||
842 | if (!open_count && !udev) { | |
843 | kfree(cam); | |
844 | } | |
845 | ||
846 | return 0; | |
847 | } | |
848 | ||
849 | static void vicam_decode_color(const u8 *data, u8 *rgb) | |
850 | { | |
851 | /* vicam_decode_color - Convert from Vicam Y-Cr-Cb to RGB | |
852 | * Copyright (C) 2002 Monroe Williams (monroe@pobox.com) | |
853 | */ | |
854 | ||
855 | int i, prevY, nextY; | |
856 | ||
857 | prevY = 512; | |
858 | nextY = 512; | |
859 | ||
860 | data += VICAM_HEADER_SIZE; | |
861 | ||
862 | for( i = 0; i < 240; i++, data += 512 ) { | |
863 | const int y = ( i * 242 ) / 240; | |
864 | ||
865 | int j, prevX, nextX; | |
866 | int Y, Cr, Cb; | |
867 | ||
868 | if ( y == 242 - 1 ) { | |
869 | nextY = -512; | |
870 | } | |
871 | ||
872 | prevX = 1; | |
873 | nextX = 1; | |
874 | ||
875 | for ( j = 0; j < 320; j++, rgb += 3 ) { | |
876 | const int x = ( j * 512 ) / 320; | |
877 | const u8 * const src = &data[x]; | |
878 | ||
879 | if ( x == 512 - 1 ) { | |
880 | nextX = -1; | |
881 | } | |
882 | ||
883 | Cr = ( src[prevX] - src[0] ) + | |
884 | ( src[nextX] - src[0] ); | |
885 | Cr /= 2; | |
886 | ||
887 | Cb = ( src[prevY] - src[prevX + prevY] ) + | |
888 | ( src[prevY] - src[nextX + prevY] ) + | |
889 | ( src[nextY] - src[prevX + nextY] ) + | |
890 | ( src[nextY] - src[nextX + nextY] ); | |
891 | Cb /= 4; | |
892 | ||
893 | Y = 1160 * ( src[0] + ( Cr / 2 ) - 16 ); | |
894 | ||
895 | if ( i & 1 ) { | |
896 | int Ct = Cr; | |
897 | Cr = Cb; | |
898 | Cb = Ct; | |
899 | } | |
900 | ||
901 | if ( ( x ^ i ) & 1 ) { | |
902 | Cr = -Cr; | |
903 | Cb = -Cb; | |
904 | } | |
905 | ||
906 | rgb[0] = clamp( ( ( Y + ( 2017 * Cb ) ) + | |
907 | 500 ) / 900, 0, 255 ); | |
908 | rgb[1] = clamp( ( ( Y - ( 392 * Cb ) - | |
909 | ( 813 * Cr ) ) + | |
910 | 500 ) / 1000, 0, 255 ); | |
911 | rgb[2] = clamp( ( ( Y + ( 1594 * Cr ) ) + | |
912 | 500 ) / 1300, 0, 255 ); | |
913 | ||
914 | prevX = -1; | |
915 | } | |
916 | ||
917 | prevY = -512; | |
918 | } | |
919 | } | |
920 | ||
921 | static void | |
922 | read_frame(struct vicam_camera *cam, int framenum) | |
923 | { | |
924 | unsigned char *request = cam->cntrlbuf; | |
925 | int realShutter; | |
926 | int n; | |
927 | int actual_length; | |
928 | ||
929 | if (cam->needsDummyRead) { | |
930 | cam->needsDummyRead = 0; | |
931 | read_frame(cam, framenum); | |
932 | } | |
933 | ||
934 | memset(request, 0, 16); | |
935 | request[0] = cam->gain; // 0 = 0% gain, FF = 100% gain | |
936 | ||
937 | request[1] = 0; // 512x242 capture | |
938 | ||
939 | request[2] = 0x90; // the function of these two bytes | |
940 | request[3] = 0x07; // is not yet understood | |
941 | ||
942 | if (cam->shutter_speed > 60) { | |
943 | // Short exposure | |
944 | realShutter = | |
945 | ((-15631900 / cam->shutter_speed) + 260533) / 1000; | |
946 | request[4] = realShutter & 0xFF; | |
947 | request[5] = (realShutter >> 8) & 0xFF; | |
948 | request[6] = 0x03; | |
949 | request[7] = 0x01; | |
950 | } else { | |
951 | // Long exposure | |
952 | realShutter = 15600 / cam->shutter_speed - 1; | |
953 | request[4] = 0; | |
954 | request[5] = 0; | |
955 | request[6] = realShutter & 0xFF; | |
956 | request[7] = realShutter >> 8; | |
957 | } | |
958 |