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Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[deliverable/linux.git] / drivers / media / video / v4l1-compat.c
1 /*
2 *
3 * Video for Linux Two
4 * Backward Compatibility Layer
5 *
6 * Support subroutines for providing V4L2 drivers with backward
7 * compatibility with applications using the old API.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 *
14 * Author: Bill Dirks <bill@thedirks.org>
15 * et al.
16 *
17 */
18
19
20 #include <linux/init.h>
21 #include <linux/module.h>
22 #include <linux/types.h>
23 #include <linux/kernel.h>
24 #include <linux/sched.h>
25 #include <linux/mm.h>
26 #include <linux/fs.h>
27 #include <linux/file.h>
28 #include <linux/string.h>
29 #include <linux/errno.h>
30 #include <linux/slab.h>
31 #include <linux/videodev.h>
32 #include <media/v4l2-common.h>
33 #include <media/v4l2-ioctl.h>
34
35 #include <asm/uaccess.h>
36 #include <asm/system.h>
37 #include <asm/pgtable.h>
38
39 static unsigned int debug;
40 module_param(debug, int, 0644);
41 MODULE_PARM_DESC(debug, "enable debug messages");
42 MODULE_AUTHOR("Bill Dirks");
43 MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
44 MODULE_LICENSE("GPL");
45
46 #define dprintk(fmt, arg...) \
47 do { \
48 if (debug) \
49 printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg);\
50 } while (0)
51
52 /*
53 * I O C T L T R A N S L A T I O N
54 *
55 * From here on down is the code for translating the numerous
56 * ioctl commands from the old API to the new API.
57 */
58
59 static int
60 get_v4l_control(struct file *file,
61 int cid,
62 v4l2_kioctl drv)
63 {
64 struct v4l2_queryctrl qctrl2;
65 struct v4l2_control ctrl2;
66 int err;
67
68 qctrl2.id = cid;
69 err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
70 if (err < 0)
71 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
72 if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) {
73 ctrl2.id = qctrl2.id;
74 err = drv(file, VIDIOC_G_CTRL, &ctrl2);
75 if (err < 0) {
76 dprintk("VIDIOC_G_CTRL: %d\n", err);
77 return 0;
78 }
79 return DIV_ROUND_CLOSEST((ctrl2.value-qctrl2.minimum) * 65535,
80 qctrl2.maximum - qctrl2.minimum);
81 }
82 return 0;
83 }
84
85 static int
86 set_v4l_control(struct file *file,
87 int cid,
88 int value,
89 v4l2_kioctl drv)
90 {
91 struct v4l2_queryctrl qctrl2;
92 struct v4l2_control ctrl2;
93 int err;
94
95 qctrl2.id = cid;
96 err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
97 if (err < 0)
98 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
99 if (err == 0 &&
100 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
101 !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED)) {
102 if (value < 0)
103 value = 0;
104 if (value > 65535)
105 value = 65535;
106 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
107 value = 65535;
108 ctrl2.id = qctrl2.id;
109 ctrl2.value =
110 (value * (qctrl2.maximum - qctrl2.minimum)
111 + 32767)
112 / 65535;
113 ctrl2.value += qctrl2.minimum;
114 err = drv(file, VIDIOC_S_CTRL, &ctrl2);
115 if (err < 0)
116 dprintk("VIDIOC_S_CTRL: %d\n", err);
117 }
118 return 0;
119 }
120
121 /* ----------------------------------------------------------------- */
122
123 static const unsigned int palette2pixelformat[] = {
124 [VIDEO_PALETTE_GREY] = V4L2_PIX_FMT_GREY,
125 [VIDEO_PALETTE_RGB555] = V4L2_PIX_FMT_RGB555,
126 [VIDEO_PALETTE_RGB565] = V4L2_PIX_FMT_RGB565,
127 [VIDEO_PALETTE_RGB24] = V4L2_PIX_FMT_BGR24,
128 [VIDEO_PALETTE_RGB32] = V4L2_PIX_FMT_BGR32,
129 /* yuv packed pixel */
130 [VIDEO_PALETTE_YUYV] = V4L2_PIX_FMT_YUYV,
131 [VIDEO_PALETTE_YUV422] = V4L2_PIX_FMT_YUYV,
132 [VIDEO_PALETTE_UYVY] = V4L2_PIX_FMT_UYVY,
133 /* yuv planar */
134 [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
135 [VIDEO_PALETTE_YUV420] = V4L2_PIX_FMT_YUV420,
136 [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
137 [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
138 [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
139 };
140
141 static unsigned int __pure
142 palette_to_pixelformat(unsigned int palette)
143 {
144 if (palette < ARRAY_SIZE(palette2pixelformat))
145 return palette2pixelformat[palette];
146 else
147 return 0;
148 }
149
150 static unsigned int __attribute_const__
151 pixelformat_to_palette(unsigned int pixelformat)
152 {
153 int palette = 0;
154 switch (pixelformat) {
155 case V4L2_PIX_FMT_GREY:
156 palette = VIDEO_PALETTE_GREY;
157 break;
158 case V4L2_PIX_FMT_RGB555:
159 palette = VIDEO_PALETTE_RGB555;
160 break;
161 case V4L2_PIX_FMT_RGB565:
162 palette = VIDEO_PALETTE_RGB565;
163 break;
164 case V4L2_PIX_FMT_BGR24:
165 palette = VIDEO_PALETTE_RGB24;
166 break;
167 case V4L2_PIX_FMT_BGR32:
168 palette = VIDEO_PALETTE_RGB32;
169 break;
170 /* yuv packed pixel */
171 case V4L2_PIX_FMT_YUYV:
172 palette = VIDEO_PALETTE_YUYV;
173 break;
174 case V4L2_PIX_FMT_UYVY:
175 palette = VIDEO_PALETTE_UYVY;
176 break;
177 /* yuv planar */
178 case V4L2_PIX_FMT_YUV410:
179 palette = VIDEO_PALETTE_YUV420;
180 break;
181 case V4L2_PIX_FMT_YUV420:
182 palette = VIDEO_PALETTE_YUV420;
183 break;
184 case V4L2_PIX_FMT_YUV411P:
185 palette = VIDEO_PALETTE_YUV411P;
186 break;
187 case V4L2_PIX_FMT_YUV422P:
188 palette = VIDEO_PALETTE_YUV422P;
189 break;
190 }
191 return palette;
192 }
193
194 /* ----------------------------------------------------------------- */
195
196 static int poll_one(struct file *file, struct poll_wqueues *pwq)
197 {
198 int retval = 1;
199 poll_table *table;
200
201 poll_initwait(pwq);
202 table = &pwq->pt;
203 for (;;) {
204 int mask;
205 mask = file->f_op->poll(file, table);
206 if (mask & POLLIN)
207 break;
208 table = NULL;
209 if (signal_pending(current)) {
210 retval = -ERESTARTSYS;
211 break;
212 }
213 poll_schedule(pwq, TASK_INTERRUPTIBLE);
214 }
215 poll_freewait(pwq);
216 return retval;
217 }
218
219 static int count_inputs(
220 struct file *file,
221 v4l2_kioctl drv)
222 {
223 struct v4l2_input input2;
224 int i;
225
226 for (i = 0;; i++) {
227 memset(&input2, 0, sizeof(input2));
228 input2.index = i;
229 if (0 != drv(file, VIDIOC_ENUMINPUT, &input2))
230 break;
231 }
232 return i;
233 }
234
235 static int check_size(
236 struct file *file,
237 v4l2_kioctl drv,
238 int *maxw,
239 int *maxh)
240 {
241 struct v4l2_fmtdesc desc2;
242 struct v4l2_format fmt2;
243
244 memset(&desc2, 0, sizeof(desc2));
245 memset(&fmt2, 0, sizeof(fmt2));
246
247 desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
248 if (0 != drv(file, VIDIOC_ENUM_FMT, &desc2))
249 goto done;
250
251 fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
252 fmt2.fmt.pix.width = 10000;
253 fmt2.fmt.pix.height = 10000;
254 fmt2.fmt.pix.pixelformat = desc2.pixelformat;
255 if (0 != drv(file, VIDIOC_TRY_FMT, &fmt2))
256 goto done;
257
258 *maxw = fmt2.fmt.pix.width;
259 *maxh = fmt2.fmt.pix.height;
260
261 done:
262 return 0;
263 }
264
265 /* ----------------------------------------------------------------- */
266
267 static noinline long v4l1_compat_get_capabilities(
268 struct video_capability *cap,
269 struct file *file,
270 v4l2_kioctl drv)
271 {
272 long err;
273 struct v4l2_framebuffer fbuf;
274 struct v4l2_capability *cap2;
275
276 cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
277 if (!cap2) {
278 err = -ENOMEM;
279 return err;
280 }
281 memset(cap, 0, sizeof(*cap));
282 memset(&fbuf, 0, sizeof(fbuf));
283
284 err = drv(file, VIDIOC_QUERYCAP, cap2);
285 if (err < 0) {
286 dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %ld\n", err);
287 goto done;
288 }
289 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
290 err = drv(file, VIDIOC_G_FBUF, &fbuf);
291 if (err < 0) {
292 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %ld\n", err);
293 memset(&fbuf, 0, sizeof(fbuf));
294 }
295 err = 0;
296 }
297
298 memcpy(cap->name, cap2->card,
299 min(sizeof(cap->name), sizeof(cap2->card)));
300 cap->name[sizeof(cap->name) - 1] = 0;
301 if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
302 cap->type |= VID_TYPE_CAPTURE;
303 if (cap2->capabilities & V4L2_CAP_TUNER)
304 cap->type |= VID_TYPE_TUNER;
305 if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
306 cap->type |= VID_TYPE_TELETEXT;
307 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
308 cap->type |= VID_TYPE_OVERLAY;
309 if (fbuf.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
310 cap->type |= VID_TYPE_CLIPPING;
311
312 cap->channels = count_inputs(file, drv);
313 check_size(file, drv,
314 &cap->maxwidth, &cap->maxheight);
315 cap->audios = 0; /* FIXME */
316 cap->minwidth = 48; /* FIXME */
317 cap->minheight = 32; /* FIXME */
318
319 done:
320 kfree(cap2);
321 return err;
322 }
323
324 static noinline long v4l1_compat_get_frame_buffer(
325 struct video_buffer *buffer,
326 struct file *file,
327 v4l2_kioctl drv)
328 {
329 long err;
330 struct v4l2_framebuffer fbuf;
331
332 memset(buffer, 0, sizeof(*buffer));
333 memset(&fbuf, 0, sizeof(fbuf));
334
335 err = drv(file, VIDIOC_G_FBUF, &fbuf);
336 if (err < 0) {
337 dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %ld\n", err);
338 goto done;
339 }
340 buffer->base = fbuf.base;
341 buffer->height = fbuf.fmt.height;
342 buffer->width = fbuf.fmt.width;
343
344 switch (fbuf.fmt.pixelformat) {
345 case V4L2_PIX_FMT_RGB332:
346 buffer->depth = 8;
347 break;
348 case V4L2_PIX_FMT_RGB555:
349 buffer->depth = 15;
350 break;
351 case V4L2_PIX_FMT_RGB565:
352 buffer->depth = 16;
353 break;
354 case V4L2_PIX_FMT_BGR24:
355 buffer->depth = 24;
356 break;
357 case V4L2_PIX_FMT_BGR32:
358 buffer->depth = 32;
359 break;
360 default:
361 buffer->depth = 0;
362 }
363 if (fbuf.fmt.bytesperline) {
364 buffer->bytesperline = fbuf.fmt.bytesperline;
365 if (!buffer->depth && buffer->width)
366 buffer->depth = ((fbuf.fmt.bytesperline<<3)
367 + (buffer->width-1))
368 / buffer->width;
369 } else {
370 buffer->bytesperline =
371 (buffer->width * buffer->depth + 7) & 7;
372 buffer->bytesperline >>= 3;
373 }
374 done:
375 return err;
376 }
377
378 static noinline long v4l1_compat_set_frame_buffer(
379 struct video_buffer *buffer,
380 struct file *file,
381 v4l2_kioctl drv)
382 {
383 long err;
384 struct v4l2_framebuffer fbuf;
385
386 memset(&fbuf, 0, sizeof(fbuf));
387 fbuf.base = buffer->base;
388 fbuf.fmt.height = buffer->height;
389 fbuf.fmt.width = buffer->width;
390 switch (buffer->depth) {
391 case 8:
392 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
393 break;
394 case 15:
395 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
396 break;
397 case 16:
398 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
399 break;
400 case 24:
401 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
402 break;
403 case 32:
404 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
405 break;
406 }
407 fbuf.fmt.bytesperline = buffer->bytesperline;
408 err = drv(file, VIDIOC_S_FBUF, &fbuf);
409 if (err < 0)
410 dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %ld\n", err);
411 return err;
412 }
413
414 static noinline long v4l1_compat_get_win_cap_dimensions(
415 struct video_window *win,
416 struct file *file,
417 v4l2_kioctl drv)
418 {
419 long err;
420 struct v4l2_format *fmt;
421
422 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
423 if (!fmt) {
424 err = -ENOMEM;
425 return err;
426 }
427 memset(win, 0, sizeof(*win));
428
429 fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
430 err = drv(file, VIDIOC_G_FMT, fmt);
431 if (err < 0)
432 dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %ld\n", err);
433 if (err == 0) {
434 win->x = fmt->fmt.win.w.left;
435 win->y = fmt->fmt.win.w.top;
436 win->width = fmt->fmt.win.w.width;
437 win->height = fmt->fmt.win.w.height;
438 win->chromakey = fmt->fmt.win.chromakey;
439 win->clips = NULL;
440 win->clipcount = 0;
441 goto done;
442 }
443
444 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
445 err = drv(file, VIDIOC_G_FMT, fmt);
446 if (err < 0) {
447 dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %ld\n", err);
448 goto done;
449 }
450 win->x = 0;
451 win->y = 0;
452 win->width = fmt->fmt.pix.width;
453 win->height = fmt->fmt.pix.height;
454 win->chromakey = 0;
455 win->clips = NULL;
456 win->clipcount = 0;
457 done:
458 kfree(fmt);
459 return err;
460 }
461
462 static noinline long v4l1_compat_set_win_cap_dimensions(
463 struct video_window *win,
464 struct file *file,
465 v4l2_kioctl drv)
466 {
467 long err, err1, err2;
468 struct v4l2_format *fmt;
469
470 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
471 if (!fmt) {
472 err = -ENOMEM;
473 return err;
474 }
475 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
476 drv(file, VIDIOC_STREAMOFF, &fmt->type);
477 err1 = drv(file, VIDIOC_G_FMT, fmt);
478 if (err1 < 0)
479 dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %ld\n", err1);
480 if (err1 == 0) {
481 fmt->fmt.pix.width = win->width;
482 fmt->fmt.pix.height = win->height;
483 fmt->fmt.pix.field = V4L2_FIELD_ANY;
484 fmt->fmt.pix.bytesperline = 0;
485 err = drv(file, VIDIOC_S_FMT, fmt);
486 if (err < 0)
487 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %ld\n",
488 err);
489 win->width = fmt->fmt.pix.width;
490 win->height = fmt->fmt.pix.height;
491 }
492
493 memset(fmt, 0, sizeof(*fmt));
494 fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
495 fmt->fmt.win.w.left = win->x;
496 fmt->fmt.win.w.top = win->y;
497 fmt->fmt.win.w.width = win->width;
498 fmt->fmt.win.w.height = win->height;
499 fmt->fmt.win.chromakey = win->chromakey;
500 fmt->fmt.win.clips = (void __user *)win->clips;
501 fmt->fmt.win.clipcount = win->clipcount;
502 err2 = drv(file, VIDIOC_S_FMT, fmt);
503 if (err2 < 0)
504 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %ld\n", err2);
505
506 if (err1 != 0 && err2 != 0)
507 err = err1;
508 else
509 err = 0;
510 kfree(fmt);
511 return err;
512 }
513
514 static noinline long v4l1_compat_turn_preview_on_off(
515 int *on,
516 struct file *file,
517 v4l2_kioctl drv)
518 {
519 long err;
520 enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
521
522 if (0 == *on) {
523 /* dirty hack time. But v4l1 has no STREAMOFF
524 * equivalent in the API, and this one at
525 * least comes close ... */
526 drv(file, VIDIOC_STREAMOFF, &captype);
527 }
528 err = drv(file, VIDIOC_OVERLAY, on);
529 if (err < 0)
530 dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %ld\n", err);
531 return err;
532 }
533
534 static noinline long v4l1_compat_get_input_info(
535 struct video_channel *chan,
536 struct file *file,
537 v4l2_kioctl drv)
538 {
539 long err;
540 struct v4l2_input input2;
541 v4l2_std_id sid;
542
543 memset(&input2, 0, sizeof(input2));
544 input2.index = chan->channel;
545 err = drv(file, VIDIOC_ENUMINPUT, &input2);
546 if (err < 0) {
547 dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
548 "channel=%d err=%ld\n", chan->channel, err);
549 goto done;
550 }
551 chan->channel = input2.index;
552 memcpy(chan->name, input2.name,
553 min(sizeof(chan->name), sizeof(input2.name)));
554 chan->name[sizeof(chan->name) - 1] = 0;
555 chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
556 chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
557 switch (input2.type) {
558 case V4L2_INPUT_TYPE_TUNER:
559 chan->type = VIDEO_TYPE_TV;
560 break;
561 default:
562 case V4L2_INPUT_TYPE_CAMERA:
563 chan->type = VIDEO_TYPE_CAMERA;
564 break;
565 }
566 chan->norm = 0;
567 /* Note: G_STD might not be present for radio receivers,
568 * so we should ignore any errors. */
569 if (drv(file, VIDIOC_G_STD, &sid) == 0) {
570 if (sid & V4L2_STD_PAL)
571 chan->norm = VIDEO_MODE_PAL;
572 if (sid & V4L2_STD_NTSC)
573 chan->norm = VIDEO_MODE_NTSC;
574 if (sid & V4L2_STD_SECAM)
575 chan->norm = VIDEO_MODE_SECAM;
576 if (sid == V4L2_STD_ALL)
577 chan->norm = VIDEO_MODE_AUTO;
578 }
579 done:
580 return err;
581 }
582
583 static noinline long v4l1_compat_set_input(
584 struct video_channel *chan,
585 struct file *file,
586 v4l2_kioctl drv)
587 {
588 long err;
589 v4l2_std_id sid = 0;
590
591 err = drv(file, VIDIOC_S_INPUT, &chan->channel);
592 if (err < 0)
593 dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %ld\n", err);
594 switch (chan->norm) {
595 case VIDEO_MODE_PAL:
596 sid = V4L2_STD_PAL;
597 break;
598 case VIDEO_MODE_NTSC:
599 sid = V4L2_STD_NTSC;
600 break;
601 case VIDEO_MODE_SECAM:
602 sid = V4L2_STD_SECAM;
603 break;
604 case VIDEO_MODE_AUTO:
605 sid = V4L2_STD_ALL;
606 break;
607 }
608 if (0 != sid) {
609 err = drv(file, VIDIOC_S_STD, &sid);
610 if (err < 0)
611 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %ld\n", err);
612 }
613 return err;
614 }
615
616 static noinline long v4l1_compat_get_picture(
617 struct video_picture *pict,
618 struct file *file,
619 v4l2_kioctl drv)
620 {
621 long err;
622 struct v4l2_format *fmt;
623
624 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
625 if (!fmt) {
626 err = -ENOMEM;
627 return err;
628 }
629
630 pict->brightness = get_v4l_control(file,
631 V4L2_CID_BRIGHTNESS, drv);
632 pict->hue = get_v4l_control(file,
633 V4L2_CID_HUE, drv);
634 pict->contrast = get_v4l_control(file,
635 V4L2_CID_CONTRAST, drv);
636 pict->colour = get_v4l_control(file,
637 V4L2_CID_SATURATION, drv);
638 pict->whiteness = get_v4l_control(file,
639 V4L2_CID_WHITENESS, drv);
640
641 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
642 err = drv(file, VIDIOC_G_FMT, fmt);
643 if (err < 0) {
644 dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %ld\n", err);
645 goto done;
646 }
647
648 if (fmt->fmt.pix.width)
649 {
650 pict->depth = ((fmt->fmt.pix.bytesperline << 3)
651 + (fmt->fmt.pix.width - 1))
652 / fmt->fmt.pix.width;
653 } else {
654 err = -EINVAL;
655 goto done;
656 }
657
658 pict->palette = pixelformat_to_palette(
659 fmt->fmt.pix.pixelformat);
660 done:
661 kfree(fmt);
662 return err;
663 }
664
665 static noinline long v4l1_compat_set_picture(
666 struct video_picture *pict,
667 struct file *file,
668 v4l2_kioctl drv)
669 {
670 long err;
671 struct v4l2_framebuffer fbuf;
672 int mem_err = 0, ovl_err = 0;
673 struct v4l2_format *fmt;
674
675 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
676 if (!fmt) {
677 err = -ENOMEM;
678 return err;
679 }
680 memset(&fbuf, 0, sizeof(fbuf));
681
682 set_v4l_control(file,
683 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
684 set_v4l_control(file,
685 V4L2_CID_HUE, pict->hue, drv);
686 set_v4l_control(file,
687 V4L2_CID_CONTRAST, pict->contrast, drv);
688 set_v4l_control(file,
689 V4L2_CID_SATURATION, pict->colour, drv);
690 set_v4l_control(file,
691 V4L2_CID_WHITENESS, pict->whiteness, drv);
692 /*
693 * V4L1 uses this ioctl to set both memory capture and overlay
694 * pixel format, while V4L2 has two different ioctls for this.
695 * Some cards may not support one or the other, and may support
696 * different pixel formats for memory vs overlay.
697 */
698
699 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
700 err = drv(file, VIDIOC_G_FMT, fmt);
701 /* If VIDIOC_G_FMT failed, then the driver likely doesn't
702 support memory capture. Trying to set the memory capture
703 parameters would be pointless. */
704 if (err < 0) {
705 dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %ld\n", err);
706 mem_err = -1000; /* didn't even try */
707 } else if (fmt->fmt.pix.pixelformat !=
708 palette_to_pixelformat(pict->palette)) {
709 fmt->fmt.pix.pixelformat = palette_to_pixelformat(
710 pict->palette);
711 mem_err = drv(file, VIDIOC_S_FMT, fmt);
712 if (mem_err < 0)
713 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
714 mem_err);
715 }
716
717 err = drv(file, VIDIOC_G_FBUF, &fbuf);
718 /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
719 support overlay. Trying to set the overlay parameters
720 would be quite pointless. */
721 if (err < 0) {
722 dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %ld\n", err);
723 ovl_err = -1000; /* didn't even try */
724 } else if (fbuf.fmt.pixelformat !=
725 palette_to_pixelformat(pict->palette)) {
726 fbuf.fmt.pixelformat = palette_to_pixelformat(
727 pict->palette);
728 ovl_err = drv(file, VIDIOC_S_FBUF, &fbuf);
729 if (ovl_err < 0)
730 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
731 ovl_err);
732 }
733 if (ovl_err < 0 && mem_err < 0) {
734 /* ioctl failed, couldn't set either parameter */
735 if (mem_err != -1000)
736 err = mem_err;
737 else if (ovl_err == -EPERM)
738 err = 0;
739 else
740 err = ovl_err;
741 } else
742 err = 0;
743 kfree(fmt);
744 return err;
745 }
746
747 static noinline long v4l1_compat_get_tuner(
748 struct video_tuner *tun,
749 struct file *file,
750 v4l2_kioctl drv)
751 {
752 long err;
753 int i;
754 struct v4l2_tuner tun2;
755 struct v4l2_standard std2;
756 v4l2_std_id sid;
757
758 memset(&tun2, 0, sizeof(tun2));
759 err = drv(file, VIDIOC_G_TUNER, &tun2);
760 if (err < 0) {
761 dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %ld\n", err);
762 goto done;
763 }
764 memcpy(tun->name, tun2.name,
765 min(sizeof(tun->name), sizeof(tun2.name)));
766 tun->name[sizeof(tun->name) - 1] = 0;
767 tun->rangelow = tun2.rangelow;
768 tun->rangehigh = tun2.rangehigh;
769 tun->flags = 0;
770 tun->mode = VIDEO_MODE_AUTO;
771
772 for (i = 0; i < 64; i++) {
773 memset(&std2, 0, sizeof(std2));
774 std2.index = i;
775 if (0 != drv(file, VIDIOC_ENUMSTD, &std2))
776 break;
777 if (std2.id & V4L2_STD_PAL)
778 tun->flags |= VIDEO_TUNER_PAL;
779 if (std2.id & V4L2_STD_NTSC)
780 tun->flags |= VIDEO_TUNER_NTSC;
781 if (std2.id & V4L2_STD_SECAM)
782 tun->flags |= VIDEO_TUNER_SECAM;
783 }
784
785 /* Note: G_STD might not be present for radio receivers,
786 * so we should ignore any errors. */
787 if (drv(file, VIDIOC_G_STD, &sid) == 0) {
788 if (sid & V4L2_STD_PAL)
789 tun->mode = VIDEO_MODE_PAL;
790 if (sid & V4L2_STD_NTSC)
791 tun->mode = VIDEO_MODE_NTSC;
792 if (sid & V4L2_STD_SECAM)
793 tun->mode = VIDEO_MODE_SECAM;
794 }
795
796 if (tun2.capability & V4L2_TUNER_CAP_LOW)
797 tun->flags |= VIDEO_TUNER_LOW;
798 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
799 tun->flags |= VIDEO_TUNER_STEREO_ON;
800 tun->signal = tun2.signal;
801 done:
802 return err;
803 }
804
805 static noinline long v4l1_compat_select_tuner(
806 struct video_tuner *tun,
807 struct file *file,
808 v4l2_kioctl drv)
809 {
810 long err;
811 struct v4l2_tuner t;/*84 bytes on x86_64*/
812 memset(&t, 0, sizeof(t));
813
814 t.index = tun->tuner;
815
816 err = drv(file, VIDIOC_S_TUNER, &t);
817 if (err < 0)
818 dprintk("VIDIOCSTUNER / VIDIOC_S_TUNER: %ld\n", err);
819 return err;
820 }
821
822 static noinline long v4l1_compat_get_frequency(
823 unsigned long *freq,
824 struct file *file,
825 v4l2_kioctl drv)
826 {
827 long err;
828 struct v4l2_frequency freq2;
829 memset(&freq2, 0, sizeof(freq2));
830
831 freq2.tuner = 0;
832 err = drv(file, VIDIOC_G_FREQUENCY, &freq2);
833 if (err < 0)
834 dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %ld\n", err);
835 if (0 == err)
836 *freq = freq2.frequency;
837 return err;
838 }
839
840 static noinline long v4l1_compat_set_frequency(
841 unsigned long *freq,
842 struct file *file,
843 v4l2_kioctl drv)
844 {
845 long err;
846 struct v4l2_frequency freq2;
847 memset(&freq2, 0, sizeof(freq2));
848
849 drv(file, VIDIOC_G_FREQUENCY, &freq2);
850 freq2.frequency = *freq;
851 err = drv(file, VIDIOC_S_FREQUENCY, &freq2);
852 if (err < 0)
853 dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %ld\n", err);
854 return err;
855 }
856
857 static noinline long v4l1_compat_get_audio(
858 struct video_audio *aud,
859 struct file *file,
860 v4l2_kioctl drv)
861 {
862 long err;
863 int i;
864 struct v4l2_queryctrl qctrl2;
865 struct v4l2_audio aud2;
866 struct v4l2_tuner tun2;
867 memset(&aud2, 0, sizeof(aud2));
868
869 err = drv(file, VIDIOC_G_AUDIO, &aud2);
870 if (err < 0) {
871 dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %ld\n", err);
872 goto done;
873 }
874 memcpy(aud->name, aud2.name,
875 min(sizeof(aud->name), sizeof(aud2.name)));
876 aud->name[sizeof(aud->name) - 1] = 0;
877 aud->audio = aud2.index;
878 aud->flags = 0;
879 i = get_v4l_control(file, V4L2_CID_AUDIO_VOLUME, drv);
880 if (i >= 0) {
881 aud->volume = i;
882 aud->flags |= VIDEO_AUDIO_VOLUME;
883 }
884 i = get_v4l_control(file, V4L2_CID_AUDIO_BASS, drv);
885 if (i >= 0) {
886 aud->bass = i;
887 aud->flags |= VIDEO_AUDIO_BASS;
888 }
889 i = get_v4l_control(file, V4L2_CID_AUDIO_TREBLE, drv);
890 if (i >= 0) {
891 aud->treble = i;
892 aud->flags |= VIDEO_AUDIO_TREBLE;
893 }
894 i = get_v4l_control(file, V4L2_CID_AUDIO_BALANCE, drv);
895 if (i >= 0) {
896 aud->balance = i;
897 aud->flags |= VIDEO_AUDIO_BALANCE;
898 }
899 i = get_v4l_control(file, V4L2_CID_AUDIO_MUTE, drv);
900 if (i >= 0) {
901 if (i)
902 aud->flags |= VIDEO_AUDIO_MUTE;
903 aud->flags |= VIDEO_AUDIO_MUTABLE;
904 }
905 aud->step = 1;
906 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
907 if (drv(file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
908 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
909 aud->step = qctrl2.step;
910 aud->mode = 0;
911
912 memset(&tun2, 0, sizeof(tun2));
913 err = drv(file, VIDIOC_G_TUNER, &tun2);
914 if (err < 0) {
915 dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %ld\n", err);
916 err = 0;
917 goto done;
918 }
919
920 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
921 aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
922 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
923 aud->mode = VIDEO_SOUND_STEREO;
924 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
925 aud->mode = VIDEO_SOUND_MONO;
926 done:
927 return err;
928 }
929
930 static noinline long v4l1_compat_set_audio(
931 struct video_audio *aud,
932 struct file *file,
933 v4l2_kioctl drv)
934 {
935 long err;
936 struct v4l2_audio aud2;
937 struct v4l2_tuner tun2;
938
939 memset(&aud2, 0, sizeof(aud2));
940 memset(&tun2, 0, sizeof(tun2));
941
942 aud2.index = aud->audio;
943 err = drv(file, VIDIOC_S_AUDIO, &aud2);
944 if (err < 0) {
945 dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %ld\n", err);
946 goto done;
947 }
948
949 set_v4l_control(file, V4L2_CID_AUDIO_VOLUME,
950 aud->volume, drv);
951 set_v4l_control(file, V4L2_CID_AUDIO_BASS,
952 aud->bass, drv);
953 set_v4l_control(file, V4L2_CID_AUDIO_TREBLE,
954 aud->treble, drv);
955 set_v4l_control(file, V4L2_CID_AUDIO_BALANCE,
956 aud->balance, drv);
957 set_v4l_control(file, V4L2_CID_AUDIO_MUTE,
958 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
959
960 err = drv(file, VIDIOC_G_TUNER, &tun2);
961 if (err < 0)
962 dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %ld\n", err);
963 if (err == 0) {
964 switch (aud->mode) {
965 default:
966 case VIDEO_SOUND_MONO:
967 case VIDEO_SOUND_LANG1:
968 tun2.audmode = V4L2_TUNER_MODE_MONO;
969 break;
970 case VIDEO_SOUND_STEREO:
971 tun2.audmode = V4L2_TUNER_MODE_STEREO;
972 break;
973 case VIDEO_SOUND_LANG2:
974 tun2.audmode = V4L2_TUNER_MODE_LANG2;
975 break;
976 }
977 err = drv(file, VIDIOC_S_TUNER, &tun2);
978 if (err < 0)
979 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %ld\n", err);
980 }
981 err = 0;
982 done:
983 return err;
984 }
985
986 static noinline long v4l1_compat_capture_frame(
987 struct video_mmap *mm,
988 struct file *file,
989 v4l2_kioctl drv)
990 {
991 long err;
992 enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
993 struct v4l2_buffer buf;
994 struct v4l2_format *fmt;
995
996 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
997 if (!fmt) {
998 err = -ENOMEM;
999 return err;
1000 }
1001 memset(&buf, 0, sizeof(buf));
1002
1003 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1004 err = drv(file, VIDIOC_G_FMT, fmt);
1005 if (err < 0) {
1006 dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %ld\n", err);
1007 goto done;
1008 }
1009 if (mm->width != fmt->fmt.pix.width ||
1010 mm->height != fmt->fmt.pix.height ||
1011 palette_to_pixelformat(mm->format) !=
1012 fmt->fmt.pix.pixelformat) {
1013 /* New capture format... */
1014 fmt->fmt.pix.width = mm->width;
1015 fmt->fmt.pix.height = mm->height;
1016 fmt->fmt.pix.pixelformat =
1017 palette_to_pixelformat(mm->format);
1018 fmt->fmt.pix.field = V4L2_FIELD_ANY;
1019 fmt->fmt.pix.bytesperline = 0;
1020 err = drv(file, VIDIOC_S_FMT, fmt);
1021 if (err < 0) {
1022 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %ld\n", err);
1023 goto done;
1024 }
1025 }
1026 buf.index = mm->frame;
1027 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1028 err = drv(file, VIDIOC_QUERYBUF, &buf);
1029 if (err < 0) {
1030 dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %ld\n", err);
1031 goto done;
1032 }
1033 err = drv(file, VIDIOC_QBUF, &buf);
1034 if (err < 0) {
1035 dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %ld\n", err);
1036 goto done;
1037 }
1038 err = drv(file, VIDIOC_STREAMON, &captype);
1039 if (err < 0)
1040 dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %ld\n", err);
1041 done:
1042 kfree(fmt);
1043 return err;
1044 }
1045
1046 static noinline long v4l1_compat_sync(
1047 int *i,
1048 struct file *file,
1049 v4l2_kioctl drv)
1050 {
1051 long err;
1052 enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1053 struct v4l2_buffer buf;
1054 struct poll_wqueues *pwq;
1055
1056 memset(&buf, 0, sizeof(buf));
1057 buf.index = *i;
1058 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1059 err = drv(file, VIDIOC_QUERYBUF, &buf);
1060 if (err < 0) {
1061 /* No such buffer */
1062 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %ld\n", err);
1063 goto done;
1064 }
1065 if (!(buf.flags & V4L2_BUF_FLAG_MAPPED)) {
1066 /* Buffer is not mapped */
1067 err = -EINVAL;
1068 goto done;
1069 }
1070
1071 /* make sure capture actually runs so we don't block forever */
1072 err = drv(file, VIDIOC_STREAMON, &captype);
1073 if (err < 0) {
1074 dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %ld\n", err);
1075 goto done;
1076 }
1077
1078 pwq = kmalloc(sizeof(*pwq), GFP_KERNEL);
1079 /* Loop as long as the buffer is queued, but not done */
1080 while ((buf.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
1081 == V4L2_BUF_FLAG_QUEUED) {
1082 err = poll_one(file, pwq);
1083 if (err < 0 || /* error or sleep was interrupted */
1084 err == 0) /* timeout? Shouldn't occur. */
1085 break;
1086 err = drv(file, VIDIOC_QUERYBUF, &buf);
1087 if (err < 0)
1088 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %ld\n", err);
1089 }
1090 kfree(pwq);
1091 if (!(buf.flags & V4L2_BUF_FLAG_DONE)) /* not done */
1092 goto done;
1093 do {
1094 err = drv(file, VIDIOC_DQBUF, &buf);
1095 if (err < 0)
1096 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %ld\n", err);
1097 } while (err == 0 && buf.index != *i);
1098 done:
1099 return err;
1100 }
1101
1102 static noinline long v4l1_compat_get_vbi_format(
1103 struct vbi_format *fmt,
1104 struct file *file,
1105 v4l2_kioctl drv)
1106 {
1107 long err;
1108 struct v4l2_format *fmt2;
1109
1110 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1111 if (!fmt2) {
1112 err = -ENOMEM;
1113 return err;
1114 }
1115 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1116
1117 err = drv(file, VIDIOC_G_FMT, fmt2);
1118 if (err < 0) {
1119 dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %ld\n", err);
1120 goto done;
1121 }
1122 if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1123 err = -EINVAL;
1124 goto done;
1125 }
1126 memset(fmt, 0, sizeof(*fmt));
1127 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1128 fmt->sampling_rate = fmt2->fmt.vbi.sampling_rate;
1129 fmt->sample_format = VIDEO_PALETTE_RAW;
1130 fmt->start[0] = fmt2->fmt.vbi.start[0];
1131 fmt->count[0] = fmt2->fmt.vbi.count[0];
1132 fmt->start[1] = fmt2->fmt.vbi.start[1];
1133 fmt->count[1] = fmt2->fmt.vbi.count[1];
1134 fmt->flags = fmt2->fmt.vbi.flags & 0x03;
1135 done:
1136 kfree(fmt2);
1137 return err;
1138 }
1139
1140 static noinline long v4l1_compat_set_vbi_format(
1141 struct vbi_format *fmt,
1142 struct file *file,
1143 v4l2_kioctl drv)
1144 {
1145 long err;
1146 struct v4l2_format *fmt2 = NULL;
1147
1148 if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1149 err = -EINVAL;
1150 return err;
1151 }
1152
1153 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1154 if (!fmt2) {
1155 err = -ENOMEM;
1156 return err;
1157 }
1158 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1159 fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1160 fmt2->fmt.vbi.sampling_rate = fmt->sampling_rate;
1161 fmt2->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1162 fmt2->fmt.vbi.start[0] = fmt->start[0];
1163 fmt2->fmt.vbi.count[0] = fmt->count[0];
1164 fmt2->fmt.vbi.start[1] = fmt->start[1];
1165 fmt2->fmt.vbi.count[1] = fmt->count[1];
1166 fmt2->fmt.vbi.flags = fmt->flags;
1167 err = drv(file, VIDIOC_TRY_FMT, fmt2);
1168 if (err < 0) {
1169 dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %ld\n", err);
1170 goto done;
1171 }
1172
1173 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1174 fmt2->fmt.vbi.sampling_rate != fmt->sampling_rate ||
1175 fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY ||
1176 fmt2->fmt.vbi.start[0] != fmt->start[0] ||
1177 fmt2->fmt.vbi.count[0] != fmt->count[0] ||
1178 fmt2->fmt.vbi.start[1] != fmt->start[1] ||
1179 fmt2->fmt.vbi.count[1] != fmt->count[1] ||
1180 fmt2->fmt.vbi.flags != fmt->flags) {
1181 err = -EINVAL;
1182 goto done;
1183 }
1184 err = drv(file, VIDIOC_S_FMT, fmt2);
1185 if (err < 0)
1186 dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %ld\n", err);
1187 done:
1188 kfree(fmt2);
1189 return err;
1190 }
1191
1192 /*
1193 * This function is exported.
1194 */
1195 long
1196 v4l_compat_translate_ioctl(struct file *file,
1197 int cmd,
1198 void *arg,
1199 v4l2_kioctl drv)
1200 {
1201 long err;
1202
1203 switch (cmd) {
1204 case VIDIOCGCAP: /* capability */
1205 err = v4l1_compat_get_capabilities(arg, file, drv);
1206 break;
1207 case VIDIOCGFBUF: /* get frame buffer */
1208 err = v4l1_compat_get_frame_buffer(arg, file, drv);
1209 break;
1210 case VIDIOCSFBUF: /* set frame buffer */
1211 err = v4l1_compat_set_frame_buffer(arg, file, drv);
1212 break;
1213 case VIDIOCGWIN: /* get window or capture dimensions */
1214 err = v4l1_compat_get_win_cap_dimensions(arg, file, drv);
1215 break;
1216 case VIDIOCSWIN: /* set window and/or capture dimensions */
1217 err = v4l1_compat_set_win_cap_dimensions(arg, file, drv);
1218 break;
1219 case VIDIOCCAPTURE: /* turn on/off preview */
1220 err = v4l1_compat_turn_preview_on_off(arg, file, drv);
1221 break;
1222 case VIDIOCGCHAN: /* get input information */
1223 err = v4l1_compat_get_input_info(arg, file, drv);
1224 break;
1225 case VIDIOCSCHAN: /* set input */
1226 err = v4l1_compat_set_input(arg, file, drv);
1227 break;
1228 case VIDIOCGPICT: /* get tone controls & partial capture format */
1229 err = v4l1_compat_get_picture(arg, file, drv);
1230 break;
1231 case VIDIOCSPICT: /* set tone controls & partial capture format */
1232 err = v4l1_compat_set_picture(arg, file, drv);
1233 break;
1234 case VIDIOCGTUNER: /* get tuner information */
1235 err = v4l1_compat_get_tuner(arg, file, drv);
1236 break;
1237 case VIDIOCSTUNER: /* select a tuner input */
1238 err = v4l1_compat_select_tuner(arg, file, drv);
1239 break;
1240 case VIDIOCGFREQ: /* get frequency */
1241 err = v4l1_compat_get_frequency(arg, file, drv);
1242 break;
1243 case VIDIOCSFREQ: /* set frequency */
1244 err = v4l1_compat_set_frequency(arg, file, drv);
1245 break;
1246 case VIDIOCGAUDIO: /* get audio properties/controls */
1247 err = v4l1_compat_get_audio(arg, file, drv);
1248 break;
1249 case VIDIOCSAUDIO: /* set audio controls */
1250 err = v4l1_compat_set_audio(arg, file, drv);
1251 break;
1252 case VIDIOCMCAPTURE: /* capture a frame */
1253 err = v4l1_compat_capture_frame(arg, file, drv);
1254 break;
1255 case VIDIOCSYNC: /* wait for a frame */
1256 err = v4l1_compat_sync(arg, file, drv);
1257 break;
1258 case VIDIOCGVBIFMT: /* query VBI data capture format */
1259 err = v4l1_compat_get_vbi_format(arg, file, drv);
1260 break;
1261 case VIDIOCSVBIFMT:
1262 err = v4l1_compat_set_vbi_format(arg, file, drv);
1263 break;
1264 default:
1265 err = -ENOIOCTLCMD;
1266 break;
1267 }
1268
1269 return err;
1270 }
1271 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1272
1273 /*
1274 * Local variables:
1275 * c-basic-offset: 8
1276 * End:
1277 */
Linux kernel - Deliverables
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