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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
[deliverable/linux.git] / drivers / media / video / v4l1-compat.c
CommitLineData
1da177e4 1/*
ac19ecc6 2 *
1da177e4
LT		 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 *
43db48d3 14 * Author: Bill Dirks <bill@thedirks.org>
1da177e4
LT		 15 * et al.
16 *
17 */
18
1da177e4
LT		 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>
1da177e4
LT		 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>
5e87efa3 32#include <media/v4l2-common.h>
1da177e4
LT		 33
34#include <asm/uaccess.h>
35#include <asm/system.h>
36#include <asm/pgtable.h>
37
38#ifdef CONFIG_KMOD
39#include <linux/kmod.h>
40#endif
41
42static unsigned int debug = 0;
43module_param(debug, int, 0644);
44MODULE_PARM_DESC(debug,"enable debug messages");
45MODULE_AUTHOR("Bill Dirks");
46MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
47MODULE_LICENSE("GPL");
48
49#define dprintk(fmt, arg...) if (debug) \
50 printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg)
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
59static int
60get_v4l_control(struct inode *inode,
61 struct file *file,
62 int cid,
63 v4l2_kioctl drv)
64{
65 struct v4l2_queryctrl qctrl2;
66 struct v4l2_control ctrl2;
67 int err;
68
69 qctrl2.id = cid;
70 err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
71 if (err < 0)
72 dprintk("VIDIOC_QUERYCTRL: %d\n",err);
73 if (err == 0 &&
74 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
75 {
76 ctrl2.id = qctrl2.id;
77 err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
78 if (err < 0) {
79 dprintk("VIDIOC_G_CTRL: %d\n",err);
80 return 0;
81 }
82 return ((ctrl2.value - qctrl2.minimum) * 65535
83 + (qctrl2.maximum - qctrl2.minimum) / 2)
84 / (qctrl2.maximum - qctrl2.minimum);
85 }
86 return 0;
87}
88
89static int
90set_v4l_control(struct inode *inode,
91 struct file *file,
92 int cid,
93 int value,
94 v4l2_kioctl drv)
95{
96 struct v4l2_queryctrl qctrl2;
97 struct v4l2_control ctrl2;
98 int err;
99
100 qctrl2.id = cid;
101 err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
102 if (err < 0)
103 dprintk("VIDIOC_QUERYCTRL: %d\n",err);
104 if (err == 0 &&
105 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
106 !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED))
107 {
108 if (value < 0)
109 value = 0;
110 if (value > 65535)
111 value = 65535;
112 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
113 value = 65535;
114 ctrl2.id = qctrl2.id;
115 ctrl2.value =
116 (value * (qctrl2.maximum - qctrl2.minimum)
117 + 32767)
118 / 65535;
119 ctrl2.value += qctrl2.minimum;
120 err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2);
121 if (err < 0)
122 dprintk("VIDIOC_S_CTRL: %d\n",err);
123 }
124 return 0;
125}
126
127/* ----------------------------------------------------------------- */
128
5f12491c 129const static unsigned int palette2pixelformat[] = {
1da177e4
LT		 130 [VIDEO_PALETTE_GREY] = V4L2_PIX_FMT_GREY,
131 [VIDEO_PALETTE_RGB555] = V4L2_PIX_FMT_RGB555,
132 [VIDEO_PALETTE_RGB565] = V4L2_PIX_FMT_RGB565,
133 [VIDEO_PALETTE_RGB24] = V4L2_PIX_FMT_BGR24,
134 [VIDEO_PALETTE_RGB32] = V4L2_PIX_FMT_BGR32,
135 /* yuv packed pixel */
136 [VIDEO_PALETTE_YUYV] = V4L2_PIX_FMT_YUYV,
137 [VIDEO_PALETTE_YUV422] = V4L2_PIX_FMT_YUYV,
138 [VIDEO_PALETTE_UYVY] = V4L2_PIX_FMT_UYVY,
139 /* yuv planar */
140 [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
141 [VIDEO_PALETTE_YUV420] = V4L2_PIX_FMT_YUV420,
142 [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
143 [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
144 [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
145};
146
e8c44319 147static unsigned int __pure
1da177e4
LT		 148palette_to_pixelformat(unsigned int palette)
149{
150 if (palette < ARRAY_SIZE(palette2pixelformat))
151 return palette2pixelformat[palette];
152 else
153 return 0;
154}
155
5f12491c
TP		 156static unsigned int __attribute_const__
157pixelformat_to_palette(unsigned int pixelformat)
1da177e4
LT		 158{
159 int palette = 0;
160 switch (pixelformat)
161 {
162 case V4L2_PIX_FMT_GREY:
163 palette = VIDEO_PALETTE_GREY;
164 break;
165 case V4L2_PIX_FMT_RGB555:
166 palette = VIDEO_PALETTE_RGB555;
167 break;
168 case V4L2_PIX_FMT_RGB565:
169 palette = VIDEO_PALETTE_RGB565;
170 break;
171 case V4L2_PIX_FMT_BGR24:
172 palette = VIDEO_PALETTE_RGB24;
173 break;
174 case V4L2_PIX_FMT_BGR32:
175 palette = VIDEO_PALETTE_RGB32;
176 break;
177 /* yuv packed pixel */
178 case V4L2_PIX_FMT_YUYV:
179 palette = VIDEO_PALETTE_YUYV;
180 break;
181 case V4L2_PIX_FMT_UYVY:
182 palette = VIDEO_PALETTE_UYVY;
183 break;
184 /* yuv planar */
185 case V4L2_PIX_FMT_YUV410:
186 palette = VIDEO_PALETTE_YUV420;
187 break;
188 case V4L2_PIX_FMT_YUV420:
189 palette = VIDEO_PALETTE_YUV420;
190 break;
191 case V4L2_PIX_FMT_YUV411P:
192 palette = VIDEO_PALETTE_YUV411P;
193 break;
194 case V4L2_PIX_FMT_YUV422P:
195 palette = VIDEO_PALETTE_YUV422P;
196 break;
197 }
198 return palette;
199}
200
201/* ----------------------------------------------------------------- */
202
203static int poll_one(struct file *file)
204{
205 int retval = 1;
206 poll_table *table;
207 struct poll_wqueues pwq;
208
209 poll_initwait(&pwq);
210 table = &pwq.pt;
211 for (;;) {
212 int mask;
213 set_current_state(TASK_INTERRUPTIBLE);
214 mask = file->f_op->poll(file, table);
215 if (mask & POLLIN)
216 break;
217 table = NULL;
218 if (signal_pending(current)) {
219 retval = -ERESTARTSYS;
220 break;
221 }
222 schedule();
223 }
224 set_current_state(TASK_RUNNING);
225 poll_freewait(&pwq);
226 return retval;
227}
228
229static int count_inputs(struct inode *inode,
230 struct file *file,
231 v4l2_kioctl drv)
232{
233 struct v4l2_input input2;
234 int i;
235
236 for (i = 0;; i++) {
237 memset(&input2,0,sizeof(input2));
238 input2.index = i;
239 if (0 != drv(inode,file,VIDIOC_ENUMINPUT, &input2))
240 break;
241 }
242 return i;
243}
244
245static int check_size(struct inode *inode,
246 struct file *file,
247 v4l2_kioctl drv,
248 int *maxw, int *maxh)
249{
250 struct v4l2_fmtdesc desc2;
251 struct v4l2_format fmt2;
252
253 memset(&desc2,0,sizeof(desc2));
254 memset(&fmt2,0,sizeof(fmt2));
255
256 desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
257 if (0 != drv(inode,file,VIDIOC_ENUM_FMT, &desc2))
258 goto done;
259
260 fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
261 fmt2.fmt.pix.width = 10000;
262 fmt2.fmt.pix.height = 10000;
263 fmt2.fmt.pix.pixelformat = desc2.pixelformat;
264 if (0 != drv(inode,file,VIDIOC_TRY_FMT, &fmt2))
265 goto done;
266
267 *maxw = fmt2.fmt.pix.width;
268 *maxh = fmt2.fmt.pix.height;
269
270 done:
271 return 0;
272}
273
274/* ----------------------------------------------------------------- */
275
276/*
277 * This function is exported.
278 */
279int
280v4l_compat_translate_ioctl(struct inode *inode,
281 struct file *file,
282 int cmd,
283 void *arg,
284 v4l2_kioctl drv)
285{
286 struct v4l2_capability *cap2 = NULL;
287 struct v4l2_format *fmt2 = NULL;
288 enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
289
290 struct v4l2_framebuffer fbuf2;
291 struct v4l2_input input2;
292 struct v4l2_tuner tun2;
293 struct v4l2_standard std2;
294 struct v4l2_frequency freq2;
295 struct v4l2_audio aud2;
296 struct v4l2_queryctrl qctrl2;
297 struct v4l2_buffer buf2;
298 v4l2_std_id sid;
299 int i, err = 0;
300
301 switch (cmd) {
302 case VIDIOCGCAP: /* capability */
303 {
304 struct video_capability *cap = arg;
305
c77990e7
CG		 306 cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
307 if (!cap2) {
308 err = -ENOMEM;
309 break;
310 }
1da177e4 311 memset(cap, 0, sizeof(*cap));
1da177e4
LT		 312 memset(&fbuf2, 0, sizeof(fbuf2));
313
314 err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
315 if (err < 0) {
316 dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n",err);
317 break;
318 }
319 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
320 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
321 if (err < 0) {
322 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n",err);
323 memset(&fbuf2, 0, sizeof(fbuf2));
324 }
325 err = 0;
326 }
327
328 memcpy(cap->name, cap2->card,
329 min(sizeof(cap->name), sizeof(cap2->card)));
330 cap->name[sizeof(cap->name) - 1] = 0;
331 if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
332 cap->type |= VID_TYPE_CAPTURE;
333 if (cap2->capabilities & V4L2_CAP_TUNER)
334 cap->type |= VID_TYPE_TUNER;
335 if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
336 cap->type |= VID_TYPE_TELETEXT;
337 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
338 cap->type |= VID_TYPE_OVERLAY;
339 if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
340 cap->type |= VID_TYPE_CLIPPING;
341
342 cap->channels = count_inputs(inode,file,drv);
343 check_size(inode,file,drv,
344 &cap->maxwidth,&cap->maxheight);
345 cap->audios = 0; /* FIXME */
346 cap->minwidth = 48; /* FIXME */
347 cap->minheight = 32; /* FIXME */
348 break;
349 }
350 case VIDIOCGFBUF: /* get frame buffer */
351 {
352 struct video_buffer *buffer = arg;
353
37026278 354 memset(buffer, 0, sizeof(*buffer));
499c1869 355 memset(&fbuf2, 0, sizeof(fbuf2));
37026278 356
1da177e4
LT		 357 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
358 if (err < 0) {
359 dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n",err);
360 break;
361 }
362 buffer->base = fbuf2.base;
363 buffer->height = fbuf2.fmt.height;
364 buffer->width = fbuf2.fmt.width;
365
366 switch (fbuf2.fmt.pixelformat) {
367 case V4L2_PIX_FMT_RGB332:
368 buffer->depth = 8;
37026278 369 break;
1da177e4
LT		 370 case V4L2_PIX_FMT_RGB555:
371 buffer->depth = 15;
372 break;
373 case V4L2_PIX_FMT_RGB565:
374 buffer->depth = 16;
375 break;
376 case V4L2_PIX_FMT_BGR24:
377 buffer->depth = 24;
378 break;
379 case V4L2_PIX_FMT_BGR32:
380 buffer->depth = 32;
381 break;
382 default:
383 buffer->depth = 0;
384 }
37026278 385 if (fbuf2.fmt.bytesperline) {
1da177e4 386 buffer->bytesperline = fbuf2.fmt.bytesperline;
37026278
MCC		 387 if (!buffer->depth && buffer->width)
388 buffer->depth = ((fbuf2.fmt.bytesperline<<3)
389 + (buffer->width-1) )
390 /buffer->width;
391 } else {
1da177e4
LT		 392 buffer->bytesperline =
393 (buffer->width * buffer->depth + 7) & 7;
394 buffer->bytesperline >>= 3;
395 }
396 break;
397 }
398 case VIDIOCSFBUF: /* set frame buffer */
399 {
400 struct video_buffer *buffer = arg;
401
402 memset(&fbuf2, 0, sizeof(fbuf2));
403 fbuf2.base = buffer->base;
404 fbuf2.fmt.height = buffer->height;
405 fbuf2.fmt.width = buffer->width;
406 switch (buffer->depth) {
407 case 8:
408 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
409 break;
410 case 15:
411 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
412 break;
413 case 16:
414 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
415 break;
416 case 24:
417 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
418 break;
419 case 32:
420 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
421 break;
422 }
423 fbuf2.fmt.bytesperline = buffer->bytesperline;
424 err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
425 if (err < 0)
426 dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n",err);
427 break;
428 }
429 case VIDIOCGWIN: /* get window or capture dimensions */
430 {
431 struct video_window *win = arg;
432
c77990e7
CG		 433 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
434 if (!fmt2) {
435 err = -ENOMEM;
436 break;
437 }
1da177e4 438 memset(win,0,sizeof(*win));
1da177e4
LT		 439
440 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
441 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
442 if (err < 0)
443 dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n",err);
444 if (err == 0) {
445 win->x = fmt2->fmt.win.w.left;
446 win->y = fmt2->fmt.win.w.top;
447 win->width = fmt2->fmt.win.w.width;
448 win->height = fmt2->fmt.win.w.height;
449 win->chromakey = fmt2->fmt.win.chromakey;
450 win->clips = NULL;
451 win->clipcount = 0;
452 break;
453 }
454
455 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
456 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
457 if (err < 0) {
458 dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n",err);
459 break;
460 }
461 win->x = 0;
462 win->y = 0;
463 win->width = fmt2->fmt.pix.width;
464 win->height = fmt2->fmt.pix.height;
465 win->chromakey = 0;
466 win->clips = NULL;
467 win->clipcount = 0;
468 break;
469 }
470 case VIDIOCSWIN: /* set window and/or capture dimensions */
471 {
472 struct video_window *win = arg;
473 int err1,err2;
474
c77990e7
CG		 475 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
476 if (!fmt2) {
477 err = -ENOMEM;
478 break;
479 }
1da177e4
LT		 480 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
481 drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type);
482 err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
483 if (err1 < 0)
484 dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err);
485 if (err1 == 0) {
486 fmt2->fmt.pix.width = win->width;
487 fmt2->fmt.pix.height = win->height;
488 fmt2->fmt.pix.field = V4L2_FIELD_ANY;
489 fmt2->fmt.pix.bytesperline = 0;
490 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
491 if (err < 0)
492 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
493 err);
494 win->width = fmt2->fmt.pix.width;
495 win->height = fmt2->fmt.pix.height;
496 }
497
498 memset(fmt2,0,sizeof(*fmt2));
499 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
500 fmt2->fmt.win.w.left = win->x;
501 fmt2->fmt.win.w.top = win->y;
502 fmt2->fmt.win.w.width = win->width;
503 fmt2->fmt.win.w.height = win->height;
504 fmt2->fmt.win.chromakey = win->chromakey;
505 fmt2->fmt.win.clips = (void __user *)win->clips;
506 fmt2->fmt.win.clipcount = win->clipcount;
507 err2 = drv(inode, file, VIDIOC_S_FMT, fmt2);
508 if (err2 < 0)
509 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err);
510
511 if (err1 != 0 && err2 != 0)
512 err = err1;
513 break;
514 }
515 case VIDIOCCAPTURE: /* turn on/off preview */
516 {
517 int *on = arg;
518
519 if (0 == *on) {
520 /* dirty hack time. But v4l1 has no STREAMOFF
521 * equivalent in the API, and this one at
522 * least comes close ... */
523 drv(inode, file, VIDIOC_STREAMOFF, &captype);
524 }
525 err = drv(inode, file, VIDIOC_OVERLAY, arg);
526 if (err < 0)
527 dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n",err);
528 break;
529 }
530 case VIDIOCGCHAN: /* get input information */
531 {
532 struct video_channel *chan = arg;
533
534 memset(&input2,0,sizeof(input2));
535 input2.index = chan->channel;
536 err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
537 if (err < 0) {
538 dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
539 "channel=%d err=%d\n",chan->channel,err);
540 break;
541 }
542 chan->channel = input2.index;
543 memcpy(chan->name, input2.name,
544 min(sizeof(chan->name), sizeof(input2.name)));
545 chan->name[sizeof(chan->name) - 1] = 0;
546 chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
547 chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
548 switch (input2.type) {
549 case V4L2_INPUT_TYPE_TUNER:
550 chan->type = VIDEO_TYPE_TV;
551 break;
552 default:
553 case V4L2_INPUT_TYPE_CAMERA:
554 chan->type = VIDEO_TYPE_CAMERA;
555 break;
556 }
557 chan->norm = 0;
558 err = drv(inode, file, VIDIOC_G_STD, &sid);
559 if (err < 0)
560 dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n",err);
561 if (err == 0) {
562 if (sid & V4L2_STD_PAL)
563 chan->norm = VIDEO_MODE_PAL;
564 if (sid & V4L2_STD_NTSC)
565 chan->norm = VIDEO_MODE_NTSC;
566 if (sid & V4L2_STD_SECAM)
567 chan->norm = VIDEO_MODE_SECAM;
568 }
569 break;
570 }
571 case VIDIOCSCHAN: /* set input */
572 {
573 struct video_channel *chan = arg;
574
575 sid = 0;
576 err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
577 if (err < 0)
578 dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n",err);
579 switch (chan->norm) {
580 case VIDEO_MODE_PAL:
581 sid = V4L2_STD_PAL;
582 break;
583 case VIDEO_MODE_NTSC:
584 sid = V4L2_STD_NTSC;
585 break;
586 case VIDEO_MODE_SECAM:
587 sid = V4L2_STD_SECAM;
588 break;
589 }
590 if (0 != sid) {
591 err = drv(inode, file, VIDIOC_S_STD, &sid);
592 if (err < 0)
593 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n",err);
594 }
595 break;
596 }
597 case VIDIOCGPICT: /* get tone controls & partial capture format */
598 {
599 struct video_picture *pict = arg;
600
c77990e7
CG		 601 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
602 if (!fmt2) {
603 err = -ENOMEM;
604 break;
605 }
606
1da177e4
LT		 607 pict->brightness = get_v4l_control(inode, file,
608 V4L2_CID_BRIGHTNESS,drv);
609 pict->hue = get_v4l_control(inode, file,
610 V4L2_CID_HUE, drv);
611 pict->contrast = get_v4l_control(inode, file,
612 V4L2_CID_CONTRAST, drv);
613 pict->colour = get_v4l_control(inode, file,
614 V4L2_CID_SATURATION, drv);
615 pict->whiteness = get_v4l_control(inode, file,
616 V4L2_CID_WHITENESS, drv);
617
1da177e4
LT		 618 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
619 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
620 if (err < 0) {
621 dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n",err);
622 break;
623 }
8a016dcc
MCC		 624
625 pict->depth = ((fmt2->fmt.pix.bytesperline<<3)
626 + (fmt2->fmt.pix.width-1) )
627 /fmt2->fmt.pix.width;
1da177e4
LT		 628 pict->palette = pixelformat_to_palette(
629 fmt2->fmt.pix.pixelformat);
630 break;
631 }
632 case VIDIOCSPICT: /* set tone controls & partial capture format */
633 {
634 struct video_picture *pict = arg;
bbe2486f
TP		 635 int mem_err = 0, ovl_err = 0;
636
c77990e7
CG		 637 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
638 if (!fmt2) {
639 err = -ENOMEM;
640 break;
641 }
499c1869 642 memset(&fbuf2, 0, sizeof(fbuf2));
1da177e4
LT		 643
644 set_v4l_control(inode, file,
645 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
646 set_v4l_control(inode, file,
647 V4L2_CID_HUE, pict->hue, drv);
648 set_v4l_control(inode, file,
649 V4L2_CID_CONTRAST, pict->contrast, drv);
650 set_v4l_control(inode, file,
651 V4L2_CID_SATURATION, pict->colour, drv);
652 set_v4l_control(inode, file,
653 V4L2_CID_WHITENESS, pict->whiteness, drv);
bbe2486f
TP		 654 /*
655 * V4L1 uses this ioctl to set both memory capture and overlay
656 * pixel format, while V4L2 has two different ioctls for this.
657 * Some cards may not support one or the other, and may support
658 * different pixel formats for memory vs overlay.
659 */
1da177e4 660
1da177e4
LT		 661 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
662 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
bbe2486f
TP		 663 /* If VIDIOC_G_FMT failed, then the driver likely doesn't
664 support memory capture. Trying to set the memory capture
665 parameters would be pointless. */
666 if (err < 0) {
1da177e4 667 dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n",err);
bbe2486f
TP		 668 mem_err = -1000; /* didn't even try */
669 } else if (fmt2->fmt.pix.pixelformat !=
670 palette_to_pixelformat(pict->palette)) {
1da177e4
LT		 671 fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
672 pict->palette);
bbe2486f
TP		 673 mem_err = drv(inode, file, VIDIOC_S_FMT, fmt2);
674 if (mem_err < 0)
675 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
676 mem_err);
1da177e4
LT		 677 }
678
679 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
bbe2486f
TP		 680 /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
681 support overlay. Trying to set the overlay parameters
682 would be quite pointless. */
683 if (err < 0) {
1da177e4 684 dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n",err);
bbe2486f
TP		 685 ovl_err = -1000; /* didn't even try */
686 } else if (fbuf2.fmt.pixelformat !=
687 palette_to_pixelformat(pict->palette)) {
1da177e4
LT		 688 fbuf2.fmt.pixelformat = palette_to_pixelformat(
689 pict->palette);
bbe2486f
TP		 690 ovl_err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
691 if (ovl_err < 0)
692 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
693 ovl_err);
1da177e4 694 }
bbe2486f
TP		 695 if (ovl_err < 0 && mem_err < 0)
696 /* ioctl failed, couldn't set either parameter */
697 if (mem_err != -1000) {
698 err = mem_err;
699 } else if (ovl_err == -EPERM) {
700 err = 0;
701 } else {
702 err = ovl_err;
703 }
704 else
705 err = 0;
1da177e4
LT		 706 break;
707 }
708 case VIDIOCGTUNER: /* get tuner information */
709 {
710 struct video_tuner *tun = arg;
711
712 memset(&tun2,0,sizeof(tun2));
713 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
714 if (err < 0) {
715 dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n",err);
716 break;
717 }
718 memcpy(tun->name, tun2.name,
719 min(sizeof(tun->name), sizeof(tun2.name)));
720 tun->name[sizeof(tun->name) - 1] = 0;
721 tun->rangelow = tun2.rangelow;
722 tun->rangehigh = tun2.rangehigh;
723 tun->flags = 0;
724 tun->mode = VIDEO_MODE_AUTO;
725
726 for (i = 0; i < 64; i++) {
727 memset(&std2,0,sizeof(std2));
728 std2.index = i;
729 if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
730 break;
731 if (std2.id & V4L2_STD_PAL)
732 tun->flags |= VIDEO_TUNER_PAL;
733 if (std2.id & V4L2_STD_NTSC)
734 tun->flags |= VIDEO_TUNER_NTSC;
735 if (std2.id & V4L2_STD_SECAM)
736 tun->flags |= VIDEO_TUNER_SECAM;
737 }
738
739 err = drv(inode, file, VIDIOC_G_STD, &sid);
740 if (err < 0)
741 dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n",err);
742 if (err == 0) {
743 if (sid & V4L2_STD_PAL)
744 tun->mode = VIDEO_MODE_PAL;
745 if (sid & V4L2_STD_NTSC)
746 tun->mode = VIDEO_MODE_NTSC;
747 if (sid & V4L2_STD_SECAM)
748 tun->mode = VIDEO_MODE_SECAM;
749 }
750
751 if (tun2.capability & V4L2_TUNER_CAP_LOW)
752 tun->flags |= VIDEO_TUNER_LOW;
753 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
754 tun->flags |= VIDEO_TUNER_STEREO_ON;
755 tun->signal = tun2.signal;
756 break;
757 }
758 case VIDIOCSTUNER: /* select a tuner input */
759 {
2aa92ffd
MCC		 760 struct video_tuner *tun = arg;
761 struct v4l2_tuner t;
762 memset(&t,0,sizeof(t));
763
764 t.index=tun->tuner;
765
766 err = drv(inode, file, VIDIOC_S_INPUT, &t);
767 if (err < 0)
768 dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n",err);
769
1da177e4
LT		 770 break;
771 }
772 case VIDIOCGFREQ: /* get frequency */
773 {
376f269e 774 unsigned long *freq = arg;
c6aeb111 775 memset(&freq2,0,sizeof(freq2));
1da177e4
LT		 776
777 freq2.tuner = 0;
778 err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
779 if (err < 0)
780 dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n",err);
781 if (0 == err)
782 *freq = freq2.frequency;
783 break;
784 }
785 case VIDIOCSFREQ: /* set frequency */
786 {
376f269e 787 unsigned long *freq = arg;
c6aeb111 788 memset(&freq2,0,sizeof(freq2));
1da177e4 789
1da177e4
LT		 790 drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
791 freq2.frequency = *freq;
792 err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
793 if (err < 0)
794 dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n",err);
795 break;
796 }
797 case VIDIOCGAUDIO: /* get audio properties/controls */
798 {
799 struct video_audio *aud = arg;
c6aeb111 800 memset(&aud2,0,sizeof(aud2));
1da177e4
LT		 801
802 err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
803 if (err < 0) {
804 dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n",err);
805 break;
806 }
807 memcpy(aud->name, aud2.name,
808 min(sizeof(aud->name), sizeof(aud2.name)));
809 aud->name[sizeof(aud->name) - 1] = 0;
810 aud->audio = aud2.index;
811 aud->flags = 0;
812 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
813 if (i >= 0) {
814 aud->volume = i;
815 aud->flags |= VIDEO_AUDIO_VOLUME;
816 }
817 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
818 if (i >= 0) {
819 aud->bass = i;
820 aud->flags |= VIDEO_AUDIO_BASS;
821 }
822 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
823 if (i >= 0) {
824 aud->treble = i;
825 aud->flags |= VIDEO_AUDIO_TREBLE;
826 }
827 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
828 if (i >= 0) {
829 aud->balance = i;
830 aud->flags |= VIDEO_AUDIO_BALANCE;
831 }
832 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
833 if (i >= 0) {
834 if (i)
835 aud->flags |= VIDEO_AUDIO_MUTE;
836 aud->flags |= VIDEO_AUDIO_MUTABLE;
837 }
838 aud->step = 1;
839 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
840 if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
841 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
842 aud->step = qctrl2.step;
843 aud->mode = 0;
ac19ecc6
MCC		 844
845 memset(&tun2,0,sizeof(tun2));
1da177e4
LT		 846 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
847 if (err < 0) {
848 dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n",err);
849 err = 0;
850 break;
851 }
ac19ecc6 852
1da177e4
LT		 853 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
854 aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
855 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
856 aud->mode = VIDEO_SOUND_STEREO;
857 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
858 aud->mode = VIDEO_SOUND_MONO;
859 break;
860 }
861 case VIDIOCSAUDIO: /* set audio controls */
862 {
863 struct video_audio *aud = arg;
864
865 memset(&aud2,0,sizeof(aud2));
866 memset(&tun2,0,sizeof(tun2));
867
868 aud2.index = aud->audio;
869 err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
870 if (err < 0) {
871 dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n",err);
872 break;
873 }
874
875 set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
876 aud->volume, drv);
877 set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
878 aud->bass, drv);
879 set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
880 aud->treble, drv);
881 set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
882 aud->balance, drv);
883 set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
884 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
885
886 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
887 if (err < 0)
888 dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n",err);
889 if (err == 0) {
890 switch (aud->mode) {
891 default:
892 case VIDEO_SOUND_MONO:
893 case VIDEO_SOUND_LANG1:
894 tun2.audmode = V4L2_TUNER_MODE_MONO;
895 break;
896 case VIDEO_SOUND_STEREO:
897 tun2.audmode = V4L2_TUNER_MODE_STEREO;
898 break;
899 case VIDEO_SOUND_LANG2:
900 tun2.audmode = V4L2_TUNER_MODE_LANG2;
901 break;
902 }
903 err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
904 if (err < 0)
905 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n",err);
906 }
907 err = 0;
908 break;
909 }
1da177e4
LT		 910 case VIDIOCMCAPTURE: /* capture a frame */
911 {
912 struct video_mmap *mm = arg;
913
c77990e7
CG		 914 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
915 if (!fmt2) {
916 err = -ENOMEM;
917 break;
918 }
1da177e4 919 memset(&buf2,0,sizeof(buf2));
1da177e4
LT		 920
921 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
922 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
923 if (err < 0) {
924 dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n",err);
925 break;
926 }
927 if (mm->width != fmt2->fmt.pix.width ||
928 mm->height != fmt2->fmt.pix.height ||
929 palette_to_pixelformat(mm->format) !=
930 fmt2->fmt.pix.pixelformat)
931 {/* New capture format... */
932 fmt2->fmt.pix.width = mm->width;
933 fmt2->fmt.pix.height = mm->height;
934 fmt2->fmt.pix.pixelformat =
935 palette_to_pixelformat(mm->format);
936 fmt2->fmt.pix.field = V4L2_FIELD_ANY;
937 fmt2->fmt.pix.bytesperline = 0;
938 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
939 if (err < 0) {
940 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err);
941 break;
942 }
943 }
944 buf2.index = mm->frame;
945 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
946 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
947 if (err < 0) {
948 dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n",err);
949 break;
950 }
951 err = drv(inode, file, VIDIOC_QBUF, &buf2);
952 if (err < 0) {
953 dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n",err);
954 break;
955 }
956 err = drv(inode, file, VIDIOC_STREAMON, &captype);
957 if (err < 0)
958 dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err);
959 break;
960 }
961 case VIDIOCSYNC: /* wait for a frame */
962 {
963 int *i = arg;
964
c6aeb111 965 memset(&buf2,0,sizeof(buf2));
1da177e4
LT		 966 buf2.index = *i;
967 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
968 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
969 if (err < 0) {
970 /* No such buffer */
971 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
972 break;
973 }
974 if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) {
975 /* Buffer is not mapped */
976 err = -EINVAL;
977 break;
978 }
979
980 /* make sure capture actually runs so we don't block forever */
981 err = drv(inode, file, VIDIOC_STREAMON, &captype);
982 if (err < 0) {
983 dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n",err);
984 break;
985 }
986
987 /* Loop as long as the buffer is queued, but not done */
988 while ((buf2.flags &
989 (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
990 == V4L2_BUF_FLAG_QUEUED)
991 {
992 err = poll_one(file);
993 if (err < 0 || /* error or sleep was interrupted */
994 err == 0) /* timeout? Shouldn't occur. */
995 break;
996 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
997 if (err < 0)
998 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
999 }
1000 if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */
1001 break;
1002 do {
1003 err = drv(inode, file, VIDIOC_DQBUF, &buf2);
1004 if (err < 0)
1005 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n",err);
1006 } while (err == 0 && buf2.index != *i);
1007 break;
1008 }
1009
1010 case VIDIOCGVBIFMT: /* query VBI data capture format */
1011 {
1012 struct vbi_format *fmt = arg;
1013
c77990e7
CG		 1014 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1015 if (!fmt2) {
1016 err = -ENOMEM;
1017 break;
1018 }
1da177e4
LT		 1019 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1020
1021 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
1022 if (err < 0) {
1023 dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
1024 break;
1025 }
67f1570a
MS		 1026 if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1027 err = -EINVAL;
1028 break;
1029 }
1da177e4
LT		 1030 memset(fmt, 0, sizeof(*fmt));
1031 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1032 fmt->sampling_rate = fmt2->fmt.vbi.sampling_rate;
1033 fmt->sample_format = VIDEO_PALETTE_RAW;
1034 fmt->start[0] = fmt2->fmt.vbi.start[0];
1035 fmt->count[0] = fmt2->fmt.vbi.count[0];
1036 fmt->start[1] = fmt2->fmt.vbi.start[1];
1037 fmt->count[1] = fmt2->fmt.vbi.count[1];
1038 fmt->flags = fmt2->fmt.vbi.flags & 0x03;
4ac97914 1039 break;
1da177e4
LT		 1040 }
1041 case VIDIOCSVBIFMT:
1042 {
1043 struct vbi_format *fmt = arg;
1044
67f1570a
MS		 1045 if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1046 err = -EINVAL;
1047 break;
1048 }
1049
c77990e7
CG		 1050 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1051 if (!fmt2) {
1052 err = -ENOMEM;
1053 break;
1054 }
1da177e4
LT		 1055 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1056 fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1057 fmt2->fmt.vbi.sampling_rate = fmt->sampling_rate;
1058 fmt2->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1059 fmt2->fmt.vbi.start[0] = fmt->start[0];
1060 fmt2->fmt.vbi.count[0] = fmt->count[0];
1061 fmt2->fmt.vbi.start[1] = fmt->start[1];
1062 fmt2->fmt.vbi.count[1] = fmt->count[1];
1063 fmt2->fmt.vbi.flags = fmt->flags;
1064 err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
1065 if (err < 0) {
1066 dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
1067 break;
1068 }
1069
1070 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1071 fmt2->fmt.vbi.sampling_rate != fmt->sampling_rate ||
67f1570a 1072 fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY ||
1da177e4
LT		 1073 fmt2->fmt.vbi.start[0] != fmt->start[0] ||
1074 fmt2->fmt.vbi.count[0] != fmt->count[0] ||
1075 fmt2->fmt.vbi.start[1] != fmt->start[1] ||
1076 fmt2->fmt.vbi.count[1] != fmt->count[1] ||
1077 fmt2->fmt.vbi.flags != fmt->flags) {
1078 err = -EINVAL;
1079 break;
1080 }
1081 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
1082 if (err < 0)
1083 dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1084 break;
1085 }
1086
1087 default:
1088 err = -ENOIOCTLCMD;
1089 break;
1090 }
1091
2ea75330
JJ		 1092 kfree(cap2);
1093 kfree(fmt2);
1da177e4
LT		 1094 return err;
1095}
1096
1097EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1098
1099/*
1100 * Local variables:
1101 * c-basic-offset: 8
1102 * End:
1103 */
Linux kernel - Deliverables
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