Commit | Line | Data |
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2b455db6 LS |
1 | /* Linux driver for Philips webcam |
2 | USB and Video4Linux interface part. | |
3 | (C) 1999-2004 Nemosoft Unv. | |
4 | (C) 2004-2006 Luc Saillard (luc@saillard.org) | |
5 | ||
6 | NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx | |
7 | driver and thus may have bugs that are not present in the original version. | |
8 | Please send bug reports and support requests to <luc@saillard.org>. | |
9 | The decompression routines have been implemented by reverse-engineering the | |
10 | Nemosoft binary pwcx module. Caveat emptor. | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | ||
26 | */ | |
27 | ||
28 | #include <linux/errno.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/mm.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/poll.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/vmalloc.h> | |
35 | #include <asm/io.h> | |
36 | ||
37 | #include "pwc.h" | |
38 | ||
39 | static struct v4l2_queryctrl pwc_controls[] = { | |
40 | { | |
41 | .id = V4L2_CID_BRIGHTNESS, | |
42 | .type = V4L2_CTRL_TYPE_INTEGER, | |
43 | .name = "Brightness", | |
44 | .minimum = 0, | |
45 | .maximum = 128, | |
46 | .step = 1, | |
47 | .default_value = 64, | |
48 | }, | |
49 | { | |
50 | .id = V4L2_CID_CONTRAST, | |
51 | .type = V4L2_CTRL_TYPE_INTEGER, | |
52 | .name = "Contrast", | |
53 | .minimum = 0, | |
54 | .maximum = 64, | |
55 | .step = 1, | |
56 | .default_value = 0, | |
57 | }, | |
58 | { | |
59 | .id = V4L2_CID_SATURATION, | |
60 | .type = V4L2_CTRL_TYPE_INTEGER, | |
61 | .name = "Saturation", | |
62 | .minimum = -100, | |
63 | .maximum = 100, | |
64 | .step = 1, | |
65 | .default_value = 0, | |
66 | }, | |
67 | { | |
68 | .id = V4L2_CID_GAMMA, | |
69 | .type = V4L2_CTRL_TYPE_INTEGER, | |
70 | .name = "Gamma", | |
71 | .minimum = 0, | |
72 | .maximum = 32, | |
73 | .step = 1, | |
74 | .default_value = 0, | |
75 | }, | |
76 | { | |
77 | .id = V4L2_CID_RED_BALANCE, | |
78 | .type = V4L2_CTRL_TYPE_INTEGER, | |
79 | .name = "Red Gain", | |
80 | .minimum = 0, | |
81 | .maximum = 256, | |
82 | .step = 1, | |
83 | .default_value = 0, | |
84 | }, | |
85 | { | |
86 | .id = V4L2_CID_BLUE_BALANCE, | |
87 | .type = V4L2_CTRL_TYPE_INTEGER, | |
88 | .name = "Blue Gain", | |
89 | .minimum = 0, | |
90 | .maximum = 256, | |
91 | .step = 1, | |
92 | .default_value = 0, | |
93 | }, | |
94 | { | |
95 | .id = V4L2_CID_AUTO_WHITE_BALANCE, | |
96 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
97 | .name = "Auto White Balance", | |
98 | .minimum = 0, | |
99 | .maximum = 1, | |
100 | .step = 1, | |
101 | .default_value = 0, | |
102 | }, | |
103 | { | |
104 | .id = V4L2_CID_EXPOSURE, | |
105 | .type = V4L2_CTRL_TYPE_INTEGER, | |
106 | .name = "Shutter Speed (Exposure)", | |
107 | .minimum = 0, | |
108 | .maximum = 256, | |
109 | .step = 1, | |
110 | .default_value = 200, | |
111 | }, | |
112 | { | |
113 | .id = V4L2_CID_AUTOGAIN, | |
114 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
115 | .name = "Auto Gain Enabled", | |
116 | .minimum = 0, | |
117 | .maximum = 1, | |
118 | .step = 1, | |
119 | .default_value = 1, | |
120 | }, | |
121 | { | |
122 | .id = V4L2_CID_GAIN, | |
123 | .type = V4L2_CTRL_TYPE_INTEGER, | |
124 | .name = "Gain Level", | |
125 | .minimum = 0, | |
126 | .maximum = 256, | |
127 | .step = 1, | |
128 | .default_value = 0, | |
129 | }, | |
2b455db6 LS |
130 | { |
131 | .id = V4L2_CID_PRIVATE_SAVE_USER, | |
132 | .type = V4L2_CTRL_TYPE_BUTTON, | |
133 | .name = "Save User Settings", | |
134 | .minimum = 0, | |
135 | .maximum = 0, | |
136 | .step = 0, | |
137 | .default_value = 0, | |
138 | }, | |
139 | { | |
140 | .id = V4L2_CID_PRIVATE_RESTORE_USER, | |
141 | .type = V4L2_CTRL_TYPE_BUTTON, | |
142 | .name = "Restore User Settings", | |
143 | .minimum = 0, | |
144 | .maximum = 0, | |
145 | .step = 0, | |
146 | .default_value = 0, | |
147 | }, | |
148 | { | |
149 | .id = V4L2_CID_PRIVATE_RESTORE_FACTORY, | |
150 | .type = V4L2_CTRL_TYPE_BUTTON, | |
151 | .name = "Restore Factory Settings", | |
152 | .minimum = 0, | |
153 | .maximum = 0, | |
154 | .step = 0, | |
155 | .default_value = 0, | |
156 | }, | |
157 | { | |
158 | .id = V4L2_CID_PRIVATE_COLOUR_MODE, | |
159 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
160 | .name = "Colour mode", | |
161 | .minimum = 0, | |
162 | .maximum = 1, | |
163 | .step = 1, | |
164 | .default_value = 0, | |
165 | }, | |
166 | { | |
167 | .id = V4L2_CID_PRIVATE_AUTOCONTOUR, | |
168 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
169 | .name = "Auto contour", | |
170 | .minimum = 0, | |
171 | .maximum = 1, | |
172 | .step = 1, | |
173 | .default_value = 0, | |
174 | }, | |
175 | { | |
176 | .id = V4L2_CID_PRIVATE_CONTOUR, | |
177 | .type = V4L2_CTRL_TYPE_INTEGER, | |
178 | .name = "Contour", | |
179 | .minimum = 0, | |
180 | .maximum = 63, | |
181 | .step = 1, | |
182 | .default_value = 0, | |
183 | }, | |
184 | { | |
185 | .id = V4L2_CID_PRIVATE_BACKLIGHT, | |
186 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
187 | .name = "Backlight compensation", | |
188 | .minimum = 0, | |
189 | .maximum = 1, | |
190 | .step = 1, | |
191 | .default_value = 0, | |
192 | }, | |
193 | { | |
194 | .id = V4L2_CID_PRIVATE_FLICKERLESS, | |
195 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
196 | .name = "Flickerless", | |
197 | .minimum = 0, | |
198 | .maximum = 1, | |
199 | .step = 1, | |
200 | .default_value = 0, | |
201 | }, | |
202 | { | |
203 | .id = V4L2_CID_PRIVATE_NOISE_REDUCTION, | |
204 | .type = V4L2_CTRL_TYPE_INTEGER, | |
205 | .name = "Noise reduction", | |
206 | .minimum = 0, | |
207 | .maximum = 3, | |
208 | .step = 1, | |
209 | .default_value = 0, | |
210 | }, | |
2b455db6 LS |
211 | }; |
212 | ||
2b455db6 LS |
213 | |
214 | static void pwc_vidioc_fill_fmt(const struct pwc_device *pdev, struct v4l2_format *f) | |
215 | { | |
216 | memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format)); | |
217 | f->fmt.pix.width = pdev->view.x; | |
218 | f->fmt.pix.height = pdev->view.y; | |
219 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
220 | if (pdev->vpalette == VIDEO_PALETTE_YUV420P) { | |
221 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; | |
222 | f->fmt.pix.bytesperline = (f->fmt.pix.width * 3)/2; | |
223 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
224 | } else { | |
225 | /* vbandlength contains 4 lines ... */ | |
226 | f->fmt.pix.bytesperline = pdev->vbandlength/4; | |
227 | f->fmt.pix.sizeimage = pdev->frame_size + sizeof(struct pwc_raw_frame); | |
228 | if (DEVICE_USE_CODEC1(pdev->type)) | |
229 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_PWC1; | |
230 | else | |
231 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_PWC2; | |
232 | } | |
233 | PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() " | |
234 | "width=%d, height=%d, bytesperline=%d, sizeimage=%d, pixelformat=%c%c%c%c\n", | |
235 | f->fmt.pix.width, | |
236 | f->fmt.pix.height, | |
237 | f->fmt.pix.bytesperline, | |
238 | f->fmt.pix.sizeimage, | |
239 | (f->fmt.pix.pixelformat)&255, | |
240 | (f->fmt.pix.pixelformat>>8)&255, | |
241 | (f->fmt.pix.pixelformat>>16)&255, | |
242 | (f->fmt.pix.pixelformat>>24)&255); | |
243 | } | |
244 | ||
245 | /* ioctl(VIDIOC_TRY_FMT) */ | |
246 | static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f) | |
247 | { | |
248 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
249 | PWC_DEBUG_IOCTL("Bad video type must be V4L2_BUF_TYPE_VIDEO_CAPTURE\n"); | |
250 | return -EINVAL; | |
251 | } | |
252 | ||
253 | switch (f->fmt.pix.pixelformat) { | |
254 | case V4L2_PIX_FMT_YUV420: | |
255 | break; | |
256 | case V4L2_PIX_FMT_PWC1: | |
257 | if (DEVICE_USE_CODEC23(pdev->type)) { | |
258 | PWC_DEBUG_IOCTL("codec1 is only supported for old pwc webcam\n"); | |
259 | return -EINVAL; | |
260 | } | |
261 | break; | |
262 | case V4L2_PIX_FMT_PWC2: | |
263 | if (DEVICE_USE_CODEC1(pdev->type)) { | |
264 | PWC_DEBUG_IOCTL("codec23 is only supported for new pwc webcam\n"); | |
265 | return -EINVAL; | |
266 | } | |
267 | break; | |
268 | default: | |
269 | PWC_DEBUG_IOCTL("Unsupported pixel format\n"); | |
270 | return -EINVAL; | |
271 | ||
272 | } | |
273 | ||
274 | if (f->fmt.pix.width > pdev->view_max.x) | |
275 | f->fmt.pix.width = pdev->view_max.x; | |
276 | else if (f->fmt.pix.width < pdev->view_min.x) | |
277 | f->fmt.pix.width = pdev->view_min.x; | |
278 | ||
279 | if (f->fmt.pix.height > pdev->view_max.y) | |
280 | f->fmt.pix.height = pdev->view_max.y; | |
281 | else if (f->fmt.pix.height < pdev->view_min.y) | |
282 | f->fmt.pix.height = pdev->view_min.y; | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | /* ioctl(VIDIOC_SET_FMT) */ | |
288 | static int pwc_vidioc_set_fmt(struct pwc_device *pdev, struct v4l2_format *f) | |
289 | { | |
290 | int ret, fps, snapshot, compression, pixelformat; | |
291 | ||
292 | ret = pwc_vidioc_try_fmt(pdev, f); | |
293 | if (ret<0) | |
294 | return ret; | |
295 | ||
296 | pixelformat = f->fmt.pix.pixelformat; | |
297 | compression = pdev->vcompression; | |
298 | snapshot = 0; | |
299 | fps = pdev->vframes; | |
300 | if (f->fmt.pix.priv) { | |
301 | compression = (f->fmt.pix.priv & PWC_QLT_MASK) >> PWC_QLT_SHIFT; | |
302 | snapshot = !!(f->fmt.pix.priv & PWC_FPS_SNAPSHOT); | |
303 | fps = (f->fmt.pix.priv & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT; | |
304 | if (fps == 0) | |
305 | fps = pdev->vframes; | |
306 | } | |
307 | ||
308 | if (pixelformat == V4L2_PIX_FMT_YUV420) | |
309 | pdev->vpalette = VIDEO_PALETTE_YUV420P; | |
310 | else | |
311 | pdev->vpalette = VIDEO_PALETTE_RAW; | |
312 | ||
313 | PWC_DEBUG_IOCTL("Try to change format to: width=%d height=%d fps=%d " | |
314 | "compression=%d snapshot=%d format=%c%c%c%c\n", | |
315 | f->fmt.pix.width, f->fmt.pix.height, fps, | |
316 | compression, snapshot, | |
317 | (pixelformat)&255, | |
318 | (pixelformat>>8)&255, | |
319 | (pixelformat>>16)&255, | |
320 | (pixelformat>>24)&255); | |
321 | ||
322 | ret = pwc_try_video_mode(pdev, | |
323 | f->fmt.pix.width, | |
324 | f->fmt.pix.height, | |
325 | fps, | |
326 | compression, | |
327 | snapshot); | |
328 | ||
329 | PWC_DEBUG_IOCTL("pwc_try_video_mode(), return=%d\n", ret); | |
330 | ||
331 | if (ret) | |
332 | return ret; | |
333 | ||
334 | pwc_vidioc_fill_fmt(pdev, f); | |
335 | ||
336 | return 0; | |
337 | ||
338 | } | |
339 | ||
069b7479 | 340 | long pwc_video_do_ioctl(struct file *file, unsigned int cmd, void *arg) |
2b455db6 LS |
341 | { |
342 | struct video_device *vdev = video_devdata(file); | |
343 | struct pwc_device *pdev; | |
344 | DECLARE_WAITQUEUE(wait, current); | |
345 | ||
346 | if (vdev == NULL) | |
347 | return -EFAULT; | |
601e9444 | 348 | pdev = video_get_drvdata(vdev); |
2b455db6 LS |
349 | if (pdev == NULL) |
350 | return -EFAULT; | |
351 | ||
05ad3907 | 352 | #ifdef CONFIG_USB_PWC_DEBUG |
5e28e009 | 353 | if (PWC_DEBUG_LEVEL_IOCTL & pwc_trace) { |
2b455db6 | 354 | v4l_printk_ioctl(cmd); |
5e28e009 MCC |
355 | printk("\n"); |
356 | } | |
2b455db6 LS |
357 | #endif |
358 | ||
359 | ||
360 | switch (cmd) { | |
361 | /* Query cabapilities */ | |
362 | case VIDIOCGCAP: | |
363 | { | |
364 | struct video_capability *caps = arg; | |
365 | ||
366 | strcpy(caps->name, vdev->name); | |
367 | caps->type = VID_TYPE_CAPTURE; | |
368 | caps->channels = 1; | |
369 | caps->audios = 1; | |
370 | caps->minwidth = pdev->view_min.x; | |
371 | caps->minheight = pdev->view_min.y; | |
372 | caps->maxwidth = pdev->view_max.x; | |
373 | caps->maxheight = pdev->view_max.y; | |
374 | break; | |
375 | } | |
376 | ||
377 | /* Channel functions (simulate 1 channel) */ | |
378 | case VIDIOCGCHAN: | |
379 | { | |
380 | struct video_channel *v = arg; | |
381 | ||
382 | if (v->channel != 0) | |
383 | return -EINVAL; | |
384 | v->flags = 0; | |
385 | v->tuners = 0; | |
386 | v->type = VIDEO_TYPE_CAMERA; | |
387 | strcpy(v->name, "Webcam"); | |
388 | return 0; | |
389 | } | |
390 | ||
391 | case VIDIOCSCHAN: | |
392 | { | |
393 | /* The spec says the argument is an integer, but | |
394 | the bttv driver uses a video_channel arg, which | |
395 | makes sense becasue it also has the norm flag. | |
396 | */ | |
397 | struct video_channel *v = arg; | |
398 | if (v->channel != 0) | |
399 | return -EINVAL; | |
400 | return 0; | |
401 | } | |
402 | ||
403 | ||
404 | /* Picture functions; contrast etc. */ | |
405 | case VIDIOCGPICT: | |
406 | { | |
407 | struct video_picture *p = arg; | |
408 | int val; | |
409 | ||
410 | val = pwc_get_brightness(pdev); | |
411 | if (val >= 0) | |
412 | p->brightness = (val<<9); | |
413 | else | |
414 | p->brightness = 0xffff; | |
415 | val = pwc_get_contrast(pdev); | |
416 | if (val >= 0) | |
417 | p->contrast = (val<<10); | |
418 | else | |
419 | p->contrast = 0xffff; | |
420 | /* Gamma, Whiteness, what's the difference? :) */ | |
421 | val = pwc_get_gamma(pdev); | |
422 | if (val >= 0) | |
423 | p->whiteness = (val<<11); | |
424 | else | |
425 | p->whiteness = 0xffff; | |
426 | if (pwc_get_saturation(pdev, &val)<0) | |
427 | p->colour = 0xffff; | |
428 | else | |
429 | p->colour = 32768 + val * 327; | |
430 | p->depth = 24; | |
431 | p->palette = pdev->vpalette; | |
432 | p->hue = 0xFFFF; /* N/A */ | |
433 | break; | |
434 | } | |
435 | ||
436 | case VIDIOCSPICT: | |
437 | { | |
438 | struct video_picture *p = arg; | |
439 | /* | |
440 | * FIXME: Suppose we are mid read | |
441 | ANSWER: No problem: the firmware of the camera | |
442 | can handle brightness/contrast/etc | |
443 | changes at _any_ time, and the palette | |
444 | is used exactly once in the uncompress | |
445 | routine. | |
446 | */ | |
447 | pwc_set_brightness(pdev, p->brightness); | |
448 | pwc_set_contrast(pdev, p->contrast); | |
449 | pwc_set_gamma(pdev, p->whiteness); | |
450 | pwc_set_saturation(pdev, (p->colour-32768)/327); | |
451 | if (p->palette && p->palette != pdev->vpalette) { | |
452 | switch (p->palette) { | |
453 | case VIDEO_PALETTE_YUV420P: | |
454 | case VIDEO_PALETTE_RAW: | |
455 | pdev->vpalette = p->palette; | |
456 | return pwc_try_video_mode(pdev, pdev->image.x, pdev->image.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot); | |
457 | break; | |
458 | default: | |
459 | return -EINVAL; | |
460 | break; | |
461 | } | |
462 | } | |
463 | break; | |
464 | } | |
465 | ||
466 | /* Window/size parameters */ | |
467 | case VIDIOCGWIN: | |
468 | { | |
469 | struct video_window *vw = arg; | |
470 | ||
471 | vw->x = 0; | |
472 | vw->y = 0; | |
473 | vw->width = pdev->view.x; | |
474 | vw->height = pdev->view.y; | |
475 | vw->chromakey = 0; | |
476 | vw->flags = (pdev->vframes << PWC_FPS_SHIFT) | | |
477 | (pdev->vsnapshot ? PWC_FPS_SNAPSHOT : 0); | |
478 | break; | |
479 | } | |
480 | ||
481 | case VIDIOCSWIN: | |
482 | { | |
483 | struct video_window *vw = arg; | |
484 | int fps, snapshot, ret; | |
485 | ||
486 | fps = (vw->flags & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT; | |
487 | snapshot = vw->flags & PWC_FPS_SNAPSHOT; | |
488 | if (fps == 0) | |
489 | fps = pdev->vframes; | |
490 | if (pdev->view.x == vw->width && pdev->view.y && fps == pdev->vframes && snapshot == pdev->vsnapshot) | |
491 | return 0; | |
492 | ret = pwc_try_video_mode(pdev, vw->width, vw->height, fps, pdev->vcompression, snapshot); | |
493 | if (ret) | |
494 | return ret; | |
495 | break; | |
496 | } | |
497 | ||
498 | /* We don't have overlay support (yet) */ | |
499 | case VIDIOCGFBUF: | |
500 | { | |
501 | struct video_buffer *vb = arg; | |
502 | ||
503 | memset(vb,0,sizeof(*vb)); | |
504 | break; | |
505 | } | |
506 | ||
507 | /* mmap() functions */ | |
508 | case VIDIOCGMBUF: | |
509 | { | |
510 | /* Tell the user program how much memory is needed for a mmap() */ | |
511 | struct video_mbuf *vm = arg; | |
512 | int i; | |
513 | ||
514 | memset(vm, 0, sizeof(*vm)); | |
515 | vm->size = pwc_mbufs * pdev->len_per_image; | |
516 | vm->frames = pwc_mbufs; /* double buffering should be enough for most applications */ | |
517 | for (i = 0; i < pwc_mbufs; i++) | |
518 | vm->offsets[i] = i * pdev->len_per_image; | |
519 | break; | |
520 | } | |
521 | ||
522 | case VIDIOCMCAPTURE: | |
523 | { | |
524 | /* Start capture into a given image buffer (called 'frame' in video_mmap structure) */ | |
525 | struct video_mmap *vm = arg; | |
526 | ||
527 | PWC_DEBUG_READ("VIDIOCMCAPTURE: %dx%d, frame %d, format %d\n", vm->width, vm->height, vm->frame, vm->format); | |
528 | if (vm->frame < 0 || vm->frame >= pwc_mbufs) | |
529 | return -EINVAL; | |
530 | ||
531 | /* xawtv is nasty. It probes the available palettes | |
532 | by setting a very small image size and trying | |
533 | various palettes... The driver doesn't support | |
534 | such small images, so I'm working around it. | |
535 | */ | |
536 | if (vm->format) | |
537 | { | |
538 | switch (vm->format) | |
539 | { | |
540 | case VIDEO_PALETTE_YUV420P: | |
541 | case VIDEO_PALETTE_RAW: | |
542 | break; | |
543 | default: | |
544 | return -EINVAL; | |
545 | break; | |
546 | } | |
547 | } | |
548 | ||
549 | if ((vm->width != pdev->view.x || vm->height != pdev->view.y) && | |
550 | (vm->width >= pdev->view_min.x && vm->height >= pdev->view_min.y)) { | |
551 | int ret; | |
552 | ||
553 | PWC_DEBUG_OPEN("VIDIOCMCAPTURE: changing size to please xawtv :-(.\n"); | |
554 | ret = pwc_try_video_mode(pdev, vm->width, vm->height, pdev->vframes, pdev->vcompression, pdev->vsnapshot); | |
555 | if (ret) | |
556 | return ret; | |
557 | } /* ... size mismatch */ | |
558 | ||
559 | /* FIXME: should we lock here? */ | |
560 | if (pdev->image_used[vm->frame]) | |
561 | return -EBUSY; /* buffer wasn't available. Bummer */ | |
562 | pdev->image_used[vm->frame] = 1; | |
563 | ||
564 | /* Okay, we're done here. In the SYNC call we wait until a | |
565 | frame comes available, then expand image into the given | |
566 | buffer. | |
567 | In contrast to the CPiA cam the Philips cams deliver a | |
568 | constant stream, almost like a grabber card. Also, | |
569 | we have separate buffers for the rawdata and the image, | |
570 | meaning we can nearly always expand into the requested buffer. | |
571 | */ | |
572 | PWC_DEBUG_READ("VIDIOCMCAPTURE done.\n"); | |
573 | break; | |
574 | } | |
575 | ||
576 | case VIDIOCSYNC: | |
577 | { | |
578 | /* The doc says: "Whenever a buffer is used it should | |
579 | call VIDIOCSYNC to free this frame up and continue." | |
580 | ||
581 | The only odd thing about this whole procedure is | |
582 | that MCAPTURE flags the buffer as "in use", and | |
583 | SYNC immediately unmarks it, while it isn't | |
584 | after SYNC that you know that the buffer actually | |
585 | got filled! So you better not start a CAPTURE in | |
586 | the same frame immediately (use double buffering). | |
587 | This is not a problem for this cam, since it has | |
588 | extra intermediate buffers, but a hardware | |
589 | grabber card will then overwrite the buffer | |
590 | you're working on. | |
591 | */ | |
592 | int *mbuf = arg; | |
593 | int ret; | |
594 | ||
595 | PWC_DEBUG_READ("VIDIOCSYNC called (%d).\n", *mbuf); | |
596 | ||
597 | /* bounds check */ | |
598 | if (*mbuf < 0 || *mbuf >= pwc_mbufs) | |
599 | return -EINVAL; | |
600 | /* check if this buffer was requested anyway */ | |
601 | if (pdev->image_used[*mbuf] == 0) | |
602 | return -EINVAL; | |
603 | ||
604 | /* Add ourselves to the frame wait-queue. | |
605 | ||
606 | FIXME: needs auditing for safety. | |
607 | QUESTION: In what respect? I think that using the | |
608 | frameq is safe now. | |
609 | */ | |
610 | add_wait_queue(&pdev->frameq, &wait); | |
611 | while (pdev->full_frames == NULL) { | |
612 | /* Check for unplugged/etc. here */ | |
613 | if (pdev->error_status) { | |
614 | remove_wait_queue(&pdev->frameq, &wait); | |
615 | set_current_state(TASK_RUNNING); | |
616 | return -pdev->error_status; | |
617 | } | |
618 | ||
619 | if (signal_pending(current)) { | |
620 | remove_wait_queue(&pdev->frameq, &wait); | |
621 | set_current_state(TASK_RUNNING); | |
622 | return -ERESTARTSYS; | |
623 | } | |
624 | schedule(); | |
625 | set_current_state(TASK_INTERRUPTIBLE); | |
626 | } | |
627 | remove_wait_queue(&pdev->frameq, &wait); | |
628 | set_current_state(TASK_RUNNING); | |
629 | ||
630 | /* The frame is ready. Expand in the image buffer | |
631 | requested by the user. I don't care if you | |
632 | mmap() 5 buffers and request data in this order: | |
633 | buffer 4 2 3 0 1 2 3 0 4 3 1 . . . | |
634 | Grabber hardware may not be so forgiving. | |
635 | */ | |
636 | PWC_DEBUG_READ("VIDIOCSYNC: frame ready.\n"); | |
637 | pdev->fill_image = *mbuf; /* tell in which buffer we want the image to be expanded */ | |
638 | /* Decompress, etc */ | |
639 | ret = pwc_handle_frame(pdev); | |
640 | pdev->image_used[*mbuf] = 0; | |
641 | if (ret) | |
642 | return -EFAULT; | |
643 | break; | |
644 | } | |
645 | ||
646 | case VIDIOCGAUDIO: | |
647 | { | |
648 | struct video_audio *v = arg; | |
649 | ||
650 | strcpy(v->name, "Microphone"); | |
651 | v->audio = -1; /* unknown audio minor */ | |
652 | v->flags = 0; | |
653 | v->mode = VIDEO_SOUND_MONO; | |
654 | v->volume = 0; | |
655 | v->bass = 0; | |
656 | v->treble = 0; | |
657 | v->balance = 0x8000; | |
658 | v->step = 1; | |
659 | break; | |
660 | } | |
661 | ||
662 | case VIDIOCSAUDIO: | |
663 | { | |
664 | /* Dummy: nothing can be set */ | |
665 | break; | |
666 | } | |
667 | ||
668 | case VIDIOCGUNIT: | |
669 | { | |
670 | struct video_unit *vu = arg; | |
671 | ||
672 | vu->video = pdev->vdev->minor & 0x3F; | |
673 | vu->audio = -1; /* not known yet */ | |
674 | vu->vbi = -1; | |
675 | vu->radio = -1; | |
676 | vu->teletext = -1; | |
677 | break; | |
678 | } | |
679 | ||
657de3cd TP |
680 | /* V4L2 Layer */ |
681 | case VIDIOC_QUERYCAP: | |
682 | { | |
2b455db6 LS |
683 | struct v4l2_capability *cap = arg; |
684 | ||
685 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCAP) This application "\ | |
686 | "try to use the v4l2 layer\n"); | |
687 | strcpy(cap->driver,PWC_NAME); | |
688 | strlcpy(cap->card, vdev->name, sizeof(cap->card)); | |
689 | usb_make_path(pdev->udev,cap->bus_info,sizeof(cap->bus_info)); | |
690 | cap->version = PWC_VERSION_CODE; | |
691 | cap->capabilities = | |
692 | V4L2_CAP_VIDEO_CAPTURE | | |
693 | V4L2_CAP_STREAMING | | |
694 | V4L2_CAP_READWRITE; | |
695 | return 0; | |
696 | } | |
697 | ||
657de3cd TP |
698 | case VIDIOC_ENUMINPUT: |
699 | { | |
2b455db6 LS |
700 | struct v4l2_input *i = arg; |
701 | ||
702 | if ( i->index ) /* Only one INPUT is supported */ | |
703 | return -EINVAL; | |
704 | ||
705 | memset(i, 0, sizeof(struct v4l2_input)); | |
706 | strcpy(i->name, "usb"); | |
707 | return 0; | |
708 | } | |
709 | ||
657de3cd | 710 | case VIDIOC_G_INPUT: |
2b455db6 LS |
711 | { |
712 | int *i = arg; | |
713 | *i = 0; /* Only one INPUT is supported */ | |
714 | return 0; | |
715 | } | |
657de3cd TP |
716 | case VIDIOC_S_INPUT: |
717 | { | |
2b455db6 LS |
718 | int *i = arg; |
719 | ||
720 | if ( *i ) { /* Only one INPUT is supported */ | |
721 | PWC_DEBUG_IOCTL("Only one input source is"\ | |
722 | " supported with this webcam.\n"); | |
723 | return -EINVAL; | |
724 | } | |
725 | return 0; | |
726 | } | |
727 | ||
728 | /* TODO: */ | |
657de3cd | 729 | case VIDIOC_QUERYCTRL: |
2b455db6 LS |
730 | { |
731 | struct v4l2_queryctrl *c = arg; | |
732 | int i; | |
733 | ||
734 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) query id=%d\n", c->id); | |
735 | for (i=0; i<sizeof(pwc_controls)/sizeof(struct v4l2_queryctrl); i++) { | |
736 | if (pwc_controls[i].id == c->id) { | |
737 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) found\n"); | |
738 | memcpy(c,&pwc_controls[i],sizeof(struct v4l2_queryctrl)); | |
739 | return 0; | |
740 | } | |
741 | } | |
742 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) not found\n"); | |
743 | ||
744 | return -EINVAL; | |
745 | } | |
746 | case VIDIOC_G_CTRL: | |
747 | { | |
748 | struct v4l2_control *c = arg; | |
749 | int ret; | |
750 | ||
751 | switch (c->id) | |
752 | { | |
753 | case V4L2_CID_BRIGHTNESS: | |
754 | c->value = pwc_get_brightness(pdev); | |
755 | if (c->value<0) | |
756 | return -EINVAL; | |
757 | return 0; | |
758 | case V4L2_CID_CONTRAST: | |
759 | c->value = pwc_get_contrast(pdev); | |
760 | if (c->value<0) | |
761 | return -EINVAL; | |
762 | return 0; | |
763 | case V4L2_CID_SATURATION: | |
764 | ret = pwc_get_saturation(pdev, &c->value); | |
765 | if (ret<0) | |
766 | return -EINVAL; | |
767 | return 0; | |
768 | case V4L2_CID_GAMMA: | |
769 | c->value = pwc_get_gamma(pdev); | |
770 | if (c->value<0) | |
771 | return -EINVAL; | |
772 | return 0; | |
773 | case V4L2_CID_RED_BALANCE: | |
774 | ret = pwc_get_red_gain(pdev, &c->value); | |
775 | if (ret<0) | |
776 | return -EINVAL; | |
777 | c->value >>= 8; | |
778 | return 0; | |
779 | case V4L2_CID_BLUE_BALANCE: | |
780 | ret = pwc_get_blue_gain(pdev, &c->value); | |
781 | if (ret<0) | |
782 | return -EINVAL; | |
783 | c->value >>= 8; | |
784 | return 0; | |
785 | case V4L2_CID_AUTO_WHITE_BALANCE: | |
786 | ret = pwc_get_awb(pdev); | |
787 | if (ret<0) | |
788 | return -EINVAL; | |
789 | c->value = (ret == PWC_WB_MANUAL)?0:1; | |
790 | return 0; | |
791 | case V4L2_CID_GAIN: | |
792 | ret = pwc_get_agc(pdev, &c->value); | |
793 | if (ret<0) | |
794 | return -EINVAL; | |
795 | c->value >>= 8; | |
796 | return 0; | |
797 | case V4L2_CID_AUTOGAIN: | |
798 | ret = pwc_get_agc(pdev, &c->value); | |
799 | if (ret<0) | |
800 | return -EINVAL; | |
801 | c->value = (c->value < 0)?1:0; | |
802 | return 0; | |
803 | case V4L2_CID_EXPOSURE: | |
804 | ret = pwc_get_shutter_speed(pdev, &c->value); | |
805 | if (ret<0) | |
806 | return -EINVAL; | |
807 | return 0; | |
808 | case V4L2_CID_PRIVATE_COLOUR_MODE: | |
809 | ret = pwc_get_colour_mode(pdev, &c->value); | |
810 | if (ret < 0) | |
811 | return -EINVAL; | |
812 | return 0; | |
813 | case V4L2_CID_PRIVATE_AUTOCONTOUR: | |
814 | ret = pwc_get_contour(pdev, &c->value); | |
815 | if (ret < 0) | |
816 | return -EINVAL; | |
817 | c->value=(c->value == -1?1:0); | |
818 | return 0; | |
819 | case V4L2_CID_PRIVATE_CONTOUR: | |
820 | ret = pwc_get_contour(pdev, &c->value); | |
821 | if (ret < 0) | |
822 | return -EINVAL; | |
823 | c->value >>= 10; | |
824 | return 0; | |
825 | case V4L2_CID_PRIVATE_BACKLIGHT: | |
826 | ret = pwc_get_backlight(pdev, &c->value); | |
827 | if (ret < 0) | |
828 | return -EINVAL; | |
829 | return 0; | |
830 | case V4L2_CID_PRIVATE_FLICKERLESS: | |
831 | ret = pwc_get_flicker(pdev, &c->value); | |
832 | if (ret < 0) | |
833 | return -EINVAL; | |
834 | c->value=(c->value?1:0); | |
835 | return 0; | |
836 | case V4L2_CID_PRIVATE_NOISE_REDUCTION: | |
837 | ret = pwc_get_dynamic_noise(pdev, &c->value); | |
838 | if (ret < 0) | |
839 | return -EINVAL; | |
840 | return 0; | |
841 | ||
842 | case V4L2_CID_PRIVATE_SAVE_USER: | |
843 | case V4L2_CID_PRIVATE_RESTORE_USER: | |
844 | case V4L2_CID_PRIVATE_RESTORE_FACTORY: | |
845 | return -EINVAL; | |
846 | } | |
847 | return -EINVAL; | |
848 | } | |
849 | case VIDIOC_S_CTRL: | |
850 | { | |
851 | struct v4l2_control *c = arg; | |
852 | int ret; | |
853 | ||
854 | switch (c->id) | |
855 | { | |
856 | case V4L2_CID_BRIGHTNESS: | |
857 | c->value <<= 9; | |
858 | ret = pwc_set_brightness(pdev, c->value); | |
859 | if (ret<0) | |
860 | return -EINVAL; | |
861 | return 0; | |
862 | case V4L2_CID_CONTRAST: | |
863 | c->value <<= 10; | |
864 | ret = pwc_set_contrast(pdev, c->value); | |
865 | if (ret<0) | |
866 | return -EINVAL; | |
867 | return 0; | |
868 | case V4L2_CID_SATURATION: | |
869 | ret = pwc_set_saturation(pdev, c->value); | |
870 | if (ret<0) | |
871 | return -EINVAL; | |
872 | return 0; | |
873 | case V4L2_CID_GAMMA: | |
874 | c->value <<= 11; | |
875 | ret = pwc_set_gamma(pdev, c->value); | |
876 | if (ret<0) | |
877 | return -EINVAL; | |
878 | return 0; | |
879 | case V4L2_CID_RED_BALANCE: | |
880 | c->value <<= 8; | |
881 | ret = pwc_set_red_gain(pdev, c->value); | |
882 | if (ret<0) | |
883 | return -EINVAL; | |
884 | return 0; | |
885 | case V4L2_CID_BLUE_BALANCE: | |
886 | c->value <<= 8; | |
887 | ret = pwc_set_blue_gain(pdev, c->value); | |
888 | if (ret<0) | |
889 | return -EINVAL; | |
890 | return 0; | |
891 | case V4L2_CID_AUTO_WHITE_BALANCE: | |
892 | c->value = (c->value == 0)?PWC_WB_MANUAL:PWC_WB_AUTO; | |
893 | ret = pwc_set_awb(pdev, c->value); | |
894 | if (ret<0) | |
895 | return -EINVAL; | |
896 | return 0; | |
897 | case V4L2_CID_EXPOSURE: | |
898 | c->value <<= 8; | |
899 | ret = pwc_set_shutter_speed(pdev, c->value?0:1, c->value); | |
900 | if (ret<0) | |
901 | return -EINVAL; | |
902 | return 0; | |
903 | case V4L2_CID_AUTOGAIN: | |
904 | /* autogain off means nothing without a gain */ | |
905 | if (c->value == 0) | |
906 | return 0; | |
907 | ret = pwc_set_agc(pdev, c->value, 0); | |
908 | if (ret<0) | |
909 | return -EINVAL; | |
910 | return 0; | |
911 | case V4L2_CID_GAIN: | |
912 | c->value <<= 8; | |
913 | ret = pwc_set_agc(pdev, 0, c->value); | |
914 | if (ret<0) | |
915 | return -EINVAL; | |
916 | return 0; | |
917 | case V4L2_CID_PRIVATE_SAVE_USER: | |
918 | if (pwc_save_user(pdev)) | |
919 | return -EINVAL; | |
920 | return 0; | |
921 | case V4L2_CID_PRIVATE_RESTORE_USER: | |
922 | if (pwc_restore_user(pdev)) | |
923 | return -EINVAL; | |
924 | return 0; | |
925 | case V4L2_CID_PRIVATE_RESTORE_FACTORY: | |
926 | if (pwc_restore_factory(pdev)) | |
927 | return -EINVAL; | |
928 | return 0; | |
929 | case V4L2_CID_PRIVATE_COLOUR_MODE: | |
930 | ret = pwc_set_colour_mode(pdev, c->value); | |
931 | if (ret < 0) | |
932 | return -EINVAL; | |
933 | return 0; | |
934 | case V4L2_CID_PRIVATE_AUTOCONTOUR: | |
935 | c->value=(c->value == 1)?-1:0; | |
936 | ret = pwc_set_contour(pdev, c->value); | |
937 | if (ret < 0) | |
938 | return -EINVAL; | |
939 | return 0; | |
940 | case V4L2_CID_PRIVATE_CONTOUR: | |
941 | c->value <<= 10; | |
942 | ret = pwc_set_contour(pdev, c->value); | |
943 | if (ret < 0) | |
944 | return -EINVAL; | |
945 | return 0; | |
946 | case V4L2_CID_PRIVATE_BACKLIGHT: | |
947 | ret = pwc_set_backlight(pdev, c->value); | |
948 | if (ret < 0) | |
949 | return -EINVAL; | |
950 | return 0; | |
951 | case V4L2_CID_PRIVATE_FLICKERLESS: | |
952 | ret = pwc_set_flicker(pdev, c->value); | |
953 | if (ret < 0) | |
954 | return -EINVAL; | |
955 | case V4L2_CID_PRIVATE_NOISE_REDUCTION: | |
956 | ret = pwc_set_dynamic_noise(pdev, c->value); | |
957 | if (ret < 0) | |
958 | return -EINVAL; | |
959 | return 0; | |
960 | ||
961 | } | |
962 | return -EINVAL; | |
963 | } | |
964 | ||
965 | case VIDIOC_ENUM_FMT: | |
966 | { | |
657de3cd | 967 | struct v4l2_fmtdesc *f = arg; |
2b455db6 LS |
968 | int index; |
969 | ||
970 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
971 | return -EINVAL; | |
972 | ||
657de3cd | 973 | /* We only support two format: the raw format, and YUV */ |
2b455db6 LS |
974 | index = f->index; |
975 | memset(f,0,sizeof(struct v4l2_fmtdesc)); | |
976 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
977 | f->index = index; | |
978 | switch(index) | |
979 | { | |
980 | case 0: | |
981 | /* RAW format */ | |
657de3cd | 982 | f->pixelformat = pdev->type<=646?V4L2_PIX_FMT_PWC1:V4L2_PIX_FMT_PWC2; |
2b455db6 | 983 | f->flags = V4L2_FMT_FLAG_COMPRESSED; |
657de3cd | 984 | strlcpy(f->description,"Raw Philips Webcam",sizeof(f->description)); |
2b455db6 LS |
985 | break; |
986 | case 1: | |
657de3cd TP |
987 | f->pixelformat = V4L2_PIX_FMT_YUV420; |
988 | strlcpy(f->description,"4:2:0, planar, Y-Cb-Cr",sizeof(f->description)); | |
2b455db6 | 989 | break; |
657de3cd | 990 | default: |
2b455db6 LS |
991 | return -EINVAL; |
992 | } | |
993 | return 0; | |
994 | } | |
995 | ||
657de3cd | 996 | case VIDIOC_G_FMT: |
2b455db6 | 997 | { |
657de3cd | 998 | struct v4l2_format *f = arg; |
2b455db6 LS |
999 | |
1000 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",pdev->image.x,pdev->image.y); | |
1001 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1002 | return -EINVAL; | |
1003 | ||
1004 | pwc_vidioc_fill_fmt(pdev, f); | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | case VIDIOC_TRY_FMT: | |
1010 | return pwc_vidioc_try_fmt(pdev, arg); | |
1011 | ||
657de3cd | 1012 | case VIDIOC_S_FMT: |
2b455db6 LS |
1013 | return pwc_vidioc_set_fmt(pdev, arg); |
1014 | ||
1015 | case VIDIOC_G_STD: | |
1016 | { | |
1017 | v4l2_std_id *std = arg; | |
1018 | *std = V4L2_STD_UNKNOWN; | |
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | case VIDIOC_S_STD: | |
1023 | { | |
1024 | v4l2_std_id *std = arg; | |
1025 | if (*std != V4L2_STD_UNKNOWN) | |
1026 | return -EINVAL; | |
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | case VIDIOC_ENUMSTD: | |
1031 | { | |
1032 | struct v4l2_standard *std = arg; | |
1033 | if (std->index != 0) | |
1034 | return -EINVAL; | |
1035 | std->id = V4L2_STD_UNKNOWN; | |
1036 | strncpy(std->name, "webcam", sizeof(std->name)); | |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | case VIDIOC_REQBUFS: | |
1041 | { | |
1042 | struct v4l2_requestbuffers *rb = arg; | |
1043 | int nbuffers; | |
1044 | ||
1045 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_REQBUFS) count=%d\n",rb->count); | |
1046 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1047 | return -EINVAL; | |
1048 | if (rb->memory != V4L2_MEMORY_MMAP) | |
1049 | return -EINVAL; | |
1050 | ||
1051 | nbuffers = rb->count; | |
1052 | if (nbuffers < 2) | |
1053 | nbuffers = 2; | |
1054 | else if (nbuffers > pwc_mbufs) | |
1055 | nbuffers = pwc_mbufs; | |
1056 | /* Force to use our # of buffers */ | |
1057 | rb->count = pwc_mbufs; | |
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | case VIDIOC_QUERYBUF: | |
1062 | { | |
1063 | struct v4l2_buffer *buf = arg; | |
1064 | int index; | |
1065 | ||
1066 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) index=%d\n",buf->index); | |
1067 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1068 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad type\n"); | |
1069 | return -EINVAL; | |
1070 | } | |
1071 | if (buf->memory != V4L2_MEMORY_MMAP) { | |
1072 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad memory type\n"); | |
1073 | return -EINVAL; | |
1074 | } | |
1075 | index = buf->index; | |
1076 | if (index < 0 || index >= pwc_mbufs) { | |
1077 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad index %d\n", buf->index); | |
1078 | return -EINVAL; | |
1079 | } | |
1080 | ||
1081 | memset(buf, 0, sizeof(struct v4l2_buffer)); | |
1082 | buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1083 | buf->index = index; | |
1084 | buf->m.offset = index * pdev->len_per_image; | |
1085 | if (pdev->vpalette == VIDEO_PALETTE_RAW) | |
1086 | buf->bytesused = pdev->frame_size + sizeof(struct pwc_raw_frame); | |
1087 | else | |
1088 | buf->bytesused = pdev->view.size; | |
1089 | buf->field = V4L2_FIELD_NONE; | |
1090 | buf->memory = V4L2_MEMORY_MMAP; | |
1091 | //buf->flags = V4L2_BUF_FLAG_MAPPED; | |
1092 | buf->length = pdev->len_per_image; | |
1093 | ||
1094 | PWC_DEBUG_READ("VIDIOC_QUERYBUF: index=%d\n",buf->index); | |
1095 | PWC_DEBUG_READ("VIDIOC_QUERYBUF: m.offset=%d\n",buf->m.offset); | |
1096 | PWC_DEBUG_READ("VIDIOC_QUERYBUF: bytesused=%d\n",buf->bytesused); | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
1101 | case VIDIOC_QBUF: | |
1102 | { | |
1103 | struct v4l2_buffer *buf = arg; | |
1104 | ||
1105 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_QBUF) index=%d\n",buf->index); | |
1106 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1107 | return -EINVAL; | |
1108 | if (buf->memory != V4L2_MEMORY_MMAP) | |
1109 | return -EINVAL; | |
223ffe5f | 1110 | if (buf->index >= pwc_mbufs) |
2b455db6 LS |
1111 | return -EINVAL; |
1112 | ||
1113 | buf->flags |= V4L2_BUF_FLAG_QUEUED; | |
1114 | buf->flags &= ~V4L2_BUF_FLAG_DONE; | |
1115 | ||
1116 | return 0; | |
1117 | } | |
1118 | ||
1119 | case VIDIOC_DQBUF: | |
1120 | { | |
1121 | struct v4l2_buffer *buf = arg; | |
1122 | int ret; | |
1123 | ||
1124 | PWC_DEBUG_IOCTL("ioctl(VIDIOC_DQBUF)\n"); | |
1125 | ||
1126 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1127 | return -EINVAL; | |
1128 | ||
1129 | /* Add ourselves to the frame wait-queue. | |
1130 | ||
1131 | FIXME: needs auditing for safety. | |
1132 | QUESTION: In what respect? I think that using the | |
1133 | frameq is safe now. | |
1134 | */ | |
1135 | add_wait_queue(&pdev->frameq, &wait); | |
1136 | while (pdev->full_frames == NULL) { | |
1137 | if (pdev->error_status) { | |
1138 | remove_wait_queue(&pdev->frameq, &wait); | |
1139 | set_current_state(TASK_RUNNING); | |
1140 | return -pdev->error_status; | |
1141 | } | |
1142 | ||
1143 | if (signal_pending(current)) { | |
1144 | remove_wait_queue(&pdev->frameq, &wait); | |
1145 | set_current_state(TASK_RUNNING); | |
1146 | return -ERESTARTSYS; | |
1147 | } | |
1148 | schedule(); | |
1149 | set_current_state(TASK_INTERRUPTIBLE); | |
1150 | } | |
1151 | remove_wait_queue(&pdev->frameq, &wait); | |
1152 | set_current_state(TASK_RUNNING); | |
1153 | ||
1154 | PWC_DEBUG_IOCTL("VIDIOC_DQBUF: frame ready.\n"); | |
1155 | /* Decompress data in pdev->images[pdev->fill_image] */ | |
1156 | ret = pwc_handle_frame(pdev); | |
1157 | if (ret) | |
1158 | return -EFAULT; | |
1159 | PWC_DEBUG_IOCTL("VIDIOC_DQBUF: after pwc_handle_frame\n"); | |
1160 | ||
1161 | buf->index = pdev->fill_image; | |
1162 | if (pdev->vpalette == VIDEO_PALETTE_RAW) | |
1163 | buf->bytesused = pdev->frame_size + sizeof(struct pwc_raw_frame); | |
1164 | else | |
1165 | buf->bytesused = pdev->view.size; | |
1166 | buf->flags = V4L2_BUF_FLAG_MAPPED; | |
1167 | buf->field = V4L2_FIELD_NONE; | |
1168 | do_gettimeofday(&buf->timestamp); | |
1169 | buf->sequence = 0; | |
1170 | buf->memory = V4L2_MEMORY_MMAP; | |
1171 | buf->m.offset = pdev->fill_image * pdev->len_per_image; | |
288bb0e7 | 1172 | buf->length = pdev->len_per_image; |
2b455db6 LS |
1173 | pwc_next_image(pdev); |
1174 | ||
1175 | PWC_DEBUG_IOCTL("VIDIOC_DQBUF: buf->index=%d\n",buf->index); | |
1176 | PWC_DEBUG_IOCTL("VIDIOC_DQBUF: buf->length=%d\n",buf->length); | |
1177 | PWC_DEBUG_IOCTL("VIDIOC_DQBUF: m.offset=%d\n",buf->m.offset); | |
1178 | PWC_DEBUG_IOCTL("VIDIOC_DQBUF: bytesused=%d\n",buf->bytesused); | |
1179 | PWC_DEBUG_IOCTL("VIDIOC_DQBUF: leaving\n"); | |
1180 | return 0; | |
1181 | ||
1182 | } | |
1183 | ||
1184 | case VIDIOC_STREAMON: | |
1185 | { | |
1186 | /* WARNING: pwc_try_video_mode() called pwc_isoc_init */ | |
1187 | pwc_isoc_init(pdev); | |
1188 | return 0; | |
1189 | } | |
1190 | ||
1191 | case VIDIOC_STREAMOFF: | |
1192 | { | |
1193 | pwc_isoc_cleanup(pdev); | |
1194 | return 0; | |
1195 | } | |
1196 | ||
9ee6d78c LS |
1197 | case VIDIOC_ENUM_FRAMESIZES: |
1198 | { | |
1199 | struct v4l2_frmsizeenum *fsize = arg; | |
1200 | unsigned int i = 0, index = fsize->index; | |
1201 | ||
1202 | if (fsize->pixel_format == V4L2_PIX_FMT_YUV420) { | |
1203 | for (i = 0; i < PSZ_MAX; i++) { | |
1204 | if (pdev->image_mask & (1UL << i)) { | |
1205 | if (!index--) { | |
1206 | fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1207 | fsize->discrete.width = pwc_image_sizes[i].x; | |
1208 | fsize->discrete.height = pwc_image_sizes[i].y; | |
1209 | return 0; | |
1210 | } | |
1211 | } | |
1212 | } | |
1213 | } else if (fsize->index == 0 && | |
1214 | ((fsize->pixel_format == V4L2_PIX_FMT_PWC1 && DEVICE_USE_CODEC1(pdev->type)) || | |
1215 | (fsize->pixel_format == V4L2_PIX_FMT_PWC2 && DEVICE_USE_CODEC23(pdev->type)))) { | |
1216 | ||
1217 | fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1218 | fsize->discrete.width = pdev->abs_max.x; | |
1219 | fsize->discrete.height = pdev->abs_max.y; | |
1220 | return 0; | |
1221 | } | |
1222 | return -EINVAL; | |
1223 | } | |
1224 | ||
1225 | case VIDIOC_ENUM_FRAMEINTERVALS: | |
1226 | { | |
1227 | struct v4l2_frmivalenum *fival = arg; | |
1228 | int size = -1; | |
1229 | unsigned int i; | |
1230 | ||
1231 | for (i = 0; i < PSZ_MAX; i++) { | |
1232 | if (pwc_image_sizes[i].x == fival->width && | |
1233 | pwc_image_sizes[i].y == fival->height) { | |
1234 | size = i; | |
1235 | break; | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | /* TODO: Support raw format */ | |
1240 | if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420) { | |
1241 | return -EINVAL; | |
1242 | } | |
1243 | ||
1244 | i = pwc_get_fps(pdev, fival->index, size); | |
1245 | if (!i) | |
1246 | return -EINVAL; | |
1247 | ||
1248 | fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; | |
1249 | fival->discrete.numerator = 1; | |
1250 | fival->discrete.denominator = i; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
2b455db6 LS |
1255 | default: |
1256 | return pwc_ioctl(pdev, cmd, arg); | |
1257 | } /* ..switch */ | |
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | /* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |