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-rw-r--r--Documentation/video4linux/CQcam.txt182
1 files changed, 91 insertions, 91 deletions
diff --git a/Documentation/video4linux/CQcam.txt b/Documentation/video4linux/CQcam.txt
index e415e3604539..464e4cec94cb 100644
--- a/Documentation/video4linux/CQcam.txt
+++ b/Documentation/video4linux/CQcam.txt
@@ -1,7 +1,7 @@
1c-qcam - Connectix Color QuickCam video4linux kernel driver 1c-qcam - Connectix Color QuickCam video4linux kernel driver
2 2
3Copyright (C) 1999 Dave Forrest <drf5n@virginia.edu> 3Copyright (C) 1999 Dave Forrest <drf5n@virginia.edu>
4 released under GNU GPL. 4 released under GNU GPL.
5 5
61999-12-08 Dave Forrest, written with kernel version 2.2.12 in mind 61999-12-08 Dave Forrest, written with kernel version 2.2.12 in mind
7 7
@@ -45,21 +45,21 @@ configuration. The appropriate flags are:
45 CONFIG_PNP_PARPORT M for autoprobe.o IEEE1284 readback module 45 CONFIG_PNP_PARPORT M for autoprobe.o IEEE1284 readback module
46 CONFIG_PRINTER_READBACK M for parport_probe.o IEEE1284 readback module 46 CONFIG_PRINTER_READBACK M for parport_probe.o IEEE1284 readback module
47 CONFIG_VIDEO_DEV M for videodev.o video4linux module 47 CONFIG_VIDEO_DEV M for videodev.o video4linux module
48 CONFIG_VIDEO_CQCAM M for c-qcam.o Color Quickcam module 48 CONFIG_VIDEO_CQCAM M for c-qcam.o Color Quickcam module
49 49
50 With these flags, the kernel should compile and install the modules. 50 With these flags, the kernel should compile and install the modules.
51To record and monitor the compilation, I use: 51To record and monitor the compilation, I use:
52 52
53 (make zlilo ; \ 53 (make zlilo ; \
54 make modules; \ 54 make modules; \
55 make modules_install ; 55 make modules_install ;
56 depmod -a ) &>log & 56 depmod -a ) &>log &
57 less log # then a capital 'F' to watch the progress 57 less log # then a capital 'F' to watch the progress
58 58
59But that is my personal preference. 59But that is my personal preference.
60 60
612.2 Configuration 612.2 Configuration
62 62
63 The configuration requires module configuration and device 63 The configuration requires module configuration and device
64configuration. I like kmod or kerneld process with the 64configuration. I like kmod or kerneld process with the
65/etc/modprobe.conf file so the modules can automatically load/unload as 65/etc/modprobe.conf file so the modules can automatically load/unload as
@@ -68,7 +68,7 @@ using MAKEDEV, or need to be created. The following sections detail
68these procedures. 68these procedures.
69 69
70 70
712.1 Module Configuration 712.1 Module Configuration
72 72
73 Using modules requires a bit of work to install and pass the 73 Using modules requires a bit of work to install and pass the
74parameters. Understand that entries in /etc/modprobe.conf of: 74parameters. Understand that entries in /etc/modprobe.conf of:
@@ -128,9 +128,9 @@ system (CONFIG_PROC_FS), the parallel printer support
128(CONFIG_PRINTER), the IEEE 1284 system,(CONFIG_PRINTER_READBACK), you 128(CONFIG_PRINTER), the IEEE 1284 system,(CONFIG_PRINTER_READBACK), you
129should be able to read some identification from your quickcam with 129should be able to read some identification from your quickcam with
130 130
131 modprobe -v parport 131 modprobe -v parport
132 modprobe -v parport_probe 132 modprobe -v parport_probe
133 cat /proc/parport/PORTNUMBER/autoprobe 133 cat /proc/parport/PORTNUMBER/autoprobe
134Returns: 134Returns:
135 CLASS:MEDIA; 135 CLASS:MEDIA;
136 MODEL:Color QuickCam 2.0; 136 MODEL:Color QuickCam 2.0;
@@ -140,7 +140,7 @@ Returns:
140and well. A common problem is that the current driver does not 140and well. A common problem is that the current driver does not
141reliably detect a c-qcam, even though one is attached. In this case, 141reliably detect a c-qcam, even though one is attached. In this case,
142 142
143 modprobe -v c-qcam 143 modprobe -v c-qcam
144or 144or
145 insmod -v c-qcam 145 insmod -v c-qcam
146 146
@@ -152,16 +152,16 @@ video4linux mailing list and archive for more current information.
1523.1 Checklist: 1523.1 Checklist:
153 153
154 Can you get an image? 154 Can you get an image?
155 v4lgrab >qcam.ppm ; wc qcam.ppm ; xv qcam.ppm 155 v4lgrab >qcam.ppm ; wc qcam.ppm ; xv qcam.ppm
156 156
157 Is a working c-qcam connected to the port? 157 Is a working c-qcam connected to the port?
158 grep ^ /proc/parport/?/autoprobe 158 grep ^ /proc/parport/?/autoprobe
159 159
160 Do the /dev/video* files exist? 160 Do the /dev/video* files exist?
161 ls -lad /dev/video 161 ls -lad /dev/video
162 162
163 Is the c-qcam module loaded? 163 Is the c-qcam module loaded?
164 modprobe -v c-qcam ; lsmod 164 modprobe -v c-qcam ; lsmod
165 165
166 Does the camera work with alternate programs? cqcam, etc? 166 Does the camera work with alternate programs? cqcam, etc?
167 167
@@ -174,7 +174,7 @@ video4linux mailing list and archive for more current information.
174isn't, you might try patching the c-qcam module to add a parport=xxx 174isn't, you might try patching the c-qcam module to add a parport=xxx
175option as in the bw-qcam module so you can specify the parallel port: 175option as in the bw-qcam module so you can specify the parallel port:
176 176
177 insmod -v c-qcam parport=0 177 insmod -v c-qcam parport=0
178 178
179And bypass the detection code, see ../../drivers/char/c-qcam.c and 179And bypass the detection code, see ../../drivers/char/c-qcam.c and
180look for the 'qc_detect' code and call. 180look for the 'qc_detect' code and call.
@@ -183,12 +183,12 @@ look for the 'qc_detect' code and call.
183this work is documented at the video4linux2 site listed below. 183this work is documented at the video4linux2 site listed below.
184 184
185 185
1869.0 --- A sample program using v4lgrabber, 1869.0 --- A sample program using v4lgrabber,
187 187
188This program is a simple image grabber that will copy a frame from the 188This program is a simple image grabber that will copy a frame from the
189first video device, /dev/video0 to standard output in portable pixmap 189first video device, /dev/video0 to standard output in portable pixmap
190format (.ppm) Using this like: 'v4lgrab | convert - c-qcam.jpg' 190format (.ppm) Using this like: 'v4lgrab | convert - c-qcam.jpg'
191produced this picture of me at 191produced this picture of me at
192 http://mug.sys.virginia.edu/~drf5n/extras/c-qcam.jpg 192 http://mug.sys.virginia.edu/~drf5n/extras/c-qcam.jpg
193 193
194-------------------- 8< ---------------- 8< ----------------------------- 194-------------------- 8< ---------------- 8< -----------------------------
@@ -202,8 +202,8 @@ produced this picture of me at
202 * Use as: 202 * Use as:
203 * v4lgrab >image.ppm 203 * v4lgrab >image.ppm
204 * 204 *
205 * Copyright (C) 1998-05-03, Phil Blundell <philb@gnu.org> 205 * Copyright (C) 1998-05-03, Phil Blundell <philb@gnu.org>
206 * Copied from http://www.tazenda.demon.co.uk/phil/vgrabber.c 206 * Copied from http://www.tazenda.demon.co.uk/phil/vgrabber.c
207 * with minor modifications (Dave Forrest, drf5n@virginia.edu). 207 * with minor modifications (Dave Forrest, drf5n@virginia.edu).
208 * 208 *
209 */ 209 */
@@ -225,55 +225,55 @@ produced this picture of me at
225 225
226#define READ_VIDEO_PIXEL(buf, format, depth, r, g, b) \ 226#define READ_VIDEO_PIXEL(buf, format, depth, r, g, b) \
227{ \ 227{ \
228 switch (format) \ 228 switch (format) \
229 { \ 229 { \
230 case VIDEO_PALETTE_GREY: \ 230 case VIDEO_PALETTE_GREY: \
231 switch (depth) \ 231 switch (depth) \
232 { \ 232 { \
233 case 4: \ 233 case 4: \
234 case 6: \ 234 case 6: \
235 case 8: \ 235 case 8: \
236 (r) = (g) = (b) = (*buf++ << 8);\ 236 (r) = (g) = (b) = (*buf++ << 8);\
237 break; \ 237 break; \
238 \ 238 \
239 case 16: \ 239 case 16: \
240 (r) = (g) = (b) = \ 240 (r) = (g) = (b) = \
241 *((unsigned short *) buf); \ 241 *((unsigned short *) buf); \
242 buf += 2; \ 242 buf += 2; \
243 break; \ 243 break; \
244 } \ 244 } \
245 break; \ 245 break; \
246 \ 246 \
247 \ 247 \
248 case VIDEO_PALETTE_RGB565: \ 248 case VIDEO_PALETTE_RGB565: \
249 { \ 249 { \
250 unsigned short tmp = *(unsigned short *)buf; \ 250 unsigned short tmp = *(unsigned short *)buf; \
251 (r) = tmp&0xF800; \ 251 (r) = tmp&0xF800; \
252 (g) = (tmp<<5)&0xFC00; \ 252 (g) = (tmp<<5)&0xFC00; \
253 (b) = (tmp<<11)&0xF800; \ 253 (b) = (tmp<<11)&0xF800; \
254 buf += 2; \ 254 buf += 2; \
255 } \ 255 } \
256 break; \ 256 break; \
257 \ 257 \
258 case VIDEO_PALETTE_RGB555: \ 258 case VIDEO_PALETTE_RGB555: \
259 (r) = (buf[0]&0xF8)<<8; \ 259 (r) = (buf[0]&0xF8)<<8; \
260 (g) = ((buf[0] << 5 | buf[1] >> 3)&0xF8)<<8; \ 260 (g) = ((buf[0] << 5 | buf[1] >> 3)&0xF8)<<8; \
261 (b) = ((buf[1] << 2 ) & 0xF8)<<8; \ 261 (b) = ((buf[1] << 2 ) & 0xF8)<<8; \
262 buf += 2; \ 262 buf += 2; \
263 break; \ 263 break; \
264 \ 264 \
265 case VIDEO_PALETTE_RGB24: \ 265 case VIDEO_PALETTE_RGB24: \
266 (r) = buf[0] << 8; (g) = buf[1] << 8; \ 266 (r) = buf[0] << 8; (g) = buf[1] << 8; \
267 (b) = buf[2] << 8; \ 267 (b) = buf[2] << 8; \
268 buf += 3; \ 268 buf += 3; \
269 break; \ 269 break; \
270 \ 270 \
271 default: \ 271 default: \
272 fprintf(stderr, \ 272 fprintf(stderr, \
273 "Format %d not yet supported\n", \ 273 "Format %d not yet supported\n", \
274 format); \ 274 format); \
275 } \ 275 } \
276} 276}
277 277
278int get_brightness_adj(unsigned char *image, long size, int *brightness) { 278int get_brightness_adj(unsigned char *image, long size, int *brightness) {
279 long i, tot = 0; 279 long i, tot = 0;
@@ -324,40 +324,40 @@ int main(int argc, char ** argv)
324 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { 324 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
325 vpic.depth=6; 325 vpic.depth=6;
326 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { 326 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
327 vpic.depth=4; 327 vpic.depth=4;
328 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { 328 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
329 fprintf(stderr, "Unable to find a supported capture format.\n"); 329 fprintf(stderr, "Unable to find a supported capture format.\n");
330 close(fd); 330 close(fd);
331 exit(1); 331 exit(1);
332 } 332 }
333 } 333 }
334 } 334 }
335 } else { 335 } else {
336 vpic.depth=24; 336 vpic.depth=24;
337 vpic.palette=VIDEO_PALETTE_RGB24; 337 vpic.palette=VIDEO_PALETTE_RGB24;
338 338
339 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { 339 if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
340 vpic.palette=VIDEO_PALETTE_RGB565; 340 vpic.palette=VIDEO_PALETTE_RGB565;
341 vpic.depth=16; 341 vpic.depth=16;
342 342
343 if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) { 343 if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
344 vpic.palette=VIDEO_PALETTE_RGB555; 344 vpic.palette=VIDEO_PALETTE_RGB555;
345 vpic.depth=15; 345 vpic.depth=15;
346 346
347 if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) { 347 if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
348 fprintf(stderr, "Unable to find a supported capture format.\n"); 348 fprintf(stderr, "Unable to find a supported capture format.\n");
349 return -1; 349 return -1;
350 } 350 }
351 } 351 }
352 } 352 }
353 } 353 }
354 354
355 buffer = malloc(win.width * win.height * bpp); 355 buffer = malloc(win.width * win.height * bpp);
356 if (!buffer) { 356 if (!buffer) {
357 fprintf(stderr, "Out of memory.\n"); 357 fprintf(stderr, "Out of memory.\n");
358 exit(1); 358 exit(1);
359 } 359 }
360 360
361 do { 361 do {
362 int newbright; 362 int newbright;
363 read(fd, buffer, win.width * win.height * bpp); 363 read(fd, buffer, win.width * win.height * bpp);
@@ -365,8 +365,8 @@ int main(int argc, char ** argv)
365 if (f) { 365 if (f) {
366 vpic.brightness += (newbright << 8); 366 vpic.brightness += (newbright << 8);
367 if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) { 367 if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
368 perror("VIDIOSPICT"); 368 perror("VIDIOSPICT");
369 break; 369 break;
370 } 370 }
371 } 371 }
372 } while (f); 372 } while (f);
@@ -381,7 +381,7 @@ int main(int argc, char ** argv)
381 fputc(g>>8, stdout); 381 fputc(g>>8, stdout);
382 fputc(b>>8, stdout); 382 fputc(b>>8, stdout);
383 } 383 }
384 384
385 close(fd); 385 close(fd);
386 return 0; 386 return 0;
387} 387}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-04 10:18:42 -0500