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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
[wrt350n-kernel.git] / drivers / media / video / v4l1-compat.c
blobdcf22a3b672aa65721994665c284aa99705bd887
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
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
42 static unsigned int debug = 0;
43 module_param(debug, int, 0644);
44 MODULE_PARM_DESC(debug,"enable debug messages");
45 MODULE_AUTHOR("Bill Dirks");
46 MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
47 MODULE_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
59 static int
60 get_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
89 static int
90 set_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
129 const static unsigned int palette2pixelformat[] = {
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
147 static unsigned int __pure
148 palette_to_pixelformat(unsigned int palette)
149 {
150 if (palette < ARRAY_SIZE(palette2pixelformat))
151 return palette2pixelformat[palette];
152 else
153 return 0;
154 }
155
156 static unsigned int __attribute_const__
157 pixelformat_to_palette(unsigned int pixelformat)
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
203 static 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
229 static 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
245 static 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 */
279 int
280 v4l_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
306 cap2 = kzalloc(sizeof(*cap2),GFP_KERNEL);
307 memset(cap, 0, sizeof(*cap));
308 memset(&fbuf2, 0, sizeof(fbuf2));
309
310 err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
311 if (err < 0) {
312 dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n",err);
313 break;
314 }
315 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
316 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
317 if (err < 0) {
318 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n",err);
319 memset(&fbuf2, 0, sizeof(fbuf2));
320 }
321 err = 0;
322 }
323
324 memcpy(cap->name, cap2->card,
325 min(sizeof(cap->name), sizeof(cap2->card)));
326 cap->name[sizeof(cap->name) - 1] = 0;
327 if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
328 cap->type |= VID_TYPE_CAPTURE;
329 if (cap2->capabilities & V4L2_CAP_TUNER)
330 cap->type |= VID_TYPE_TUNER;
331 if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
332 cap->type |= VID_TYPE_TELETEXT;
333 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
334 cap->type |= VID_TYPE_OVERLAY;
335 if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
336 cap->type |= VID_TYPE_CLIPPING;
337
338 cap->channels = count_inputs(inode,file,drv);
339 check_size(inode,file,drv,
340 &cap->maxwidth,&cap->maxheight);
341 cap->audios = 0; /* FIXME */
342 cap->minwidth = 48; /* FIXME */
343 cap->minheight = 32; /* FIXME */
344 break;
345 }
346 case VIDIOCGFBUF: /* get frame buffer */
347 {
348 struct video_buffer *buffer = arg;
349
350 memset(buffer, 0, sizeof(*buffer));
351 memset(&fbuf2, 0, sizeof(fbuf2));
352
353 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
354 if (err < 0) {
355 dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n",err);
356 break;
357 }
358 buffer->base = fbuf2.base;
359 buffer->height = fbuf2.fmt.height;
360 buffer->width = fbuf2.fmt.width;
361
362 switch (fbuf2.fmt.pixelformat) {
363 case V4L2_PIX_FMT_RGB332:
364 buffer->depth = 8;
365 break;
366 case V4L2_PIX_FMT_RGB555:
367 buffer->depth = 15;
368 break;
369 case V4L2_PIX_FMT_RGB565:
370 buffer->depth = 16;
371 break;
372 case V4L2_PIX_FMT_BGR24:
373 buffer->depth = 24;
374 break;
375 case V4L2_PIX_FMT_BGR32:
376 buffer->depth = 32;
377 break;
378 default:
379 buffer->depth = 0;
380 }
381 if (fbuf2.fmt.bytesperline) {
382 buffer->bytesperline = fbuf2.fmt.bytesperline;
383 if (!buffer->depth && buffer->width)
384 buffer->depth = ((fbuf2.fmt.bytesperline<<3)
385 + (buffer->width-1) )
386 /buffer->width;
387 } else {
388 buffer->bytesperline =
389 (buffer->width * buffer->depth + 7) & 7;
390 buffer->bytesperline >>= 3;
391 }
392 break;
393 }
394 case VIDIOCSFBUF: /* set frame buffer */
395 {
396 struct video_buffer *buffer = arg;
397
398 memset(&fbuf2, 0, sizeof(fbuf2));
399 fbuf2.base = buffer->base;
400 fbuf2.fmt.height = buffer->height;
401 fbuf2.fmt.width = buffer->width;
402 switch (buffer->depth) {
403 case 8:
404 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
405 break;
406 case 15:
407 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
408 break;
409 case 16:
410 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
411 break;
412 case 24:
413 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
414 break;
415 case 32:
416 fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
417 break;
418 }
419 fbuf2.fmt.bytesperline = buffer->bytesperline;
420 err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
421 if (err < 0)
422 dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n",err);
423 break;
424 }
425 case VIDIOCGWIN: /* get window or capture dimensions */
426 {
427 struct video_window *win = arg;
428
429 fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL);
430 memset(win,0,sizeof(*win));
431
432 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
433 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
434 if (err < 0)
435 dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n",err);
436 if (err == 0) {
437 win->x = fmt2->fmt.win.w.left;
438 win->y = fmt2->fmt.win.w.top;
439 win->width = fmt2->fmt.win.w.width;
440 win->height = fmt2->fmt.win.w.height;
441 win->chromakey = fmt2->fmt.win.chromakey;
442 win->clips = NULL;
443 win->clipcount = 0;
444 break;
445 }
446
447 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
448 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
449 if (err < 0) {
450 dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n",err);
451 break;
452 }
453 win->x = 0;
454 win->y = 0;
455 win->width = fmt2->fmt.pix.width;
456 win->height = fmt2->fmt.pix.height;
457 win->chromakey = 0;
458 win->clips = NULL;
459 win->clipcount = 0;
460 break;
461 }
462 case VIDIOCSWIN: /* set window and/or capture dimensions */
463 {
464 struct video_window *win = arg;
465 int err1,err2;
466
467 fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL);
468 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
469 drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type);
470 err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
471 if (err1 < 0)
472 dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err);
473 if (err1 == 0) {
474 fmt2->fmt.pix.width = win->width;
475 fmt2->fmt.pix.height = win->height;
476 fmt2->fmt.pix.field = V4L2_FIELD_ANY;
477 fmt2->fmt.pix.bytesperline = 0;
478 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
479 if (err < 0)
480 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
481 err);
482 win->width = fmt2->fmt.pix.width;
483 win->height = fmt2->fmt.pix.height;
484 }
485
486 memset(fmt2,0,sizeof(*fmt2));
487 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
488 fmt2->fmt.win.w.left = win->x;
489 fmt2->fmt.win.w.top = win->y;
490 fmt2->fmt.win.w.width = win->width;
491 fmt2->fmt.win.w.height = win->height;
492 fmt2->fmt.win.chromakey = win->chromakey;
493 fmt2->fmt.win.clips = (void __user *)win->clips;
494 fmt2->fmt.win.clipcount = win->clipcount;
495 err2 = drv(inode, file, VIDIOC_S_FMT, fmt2);
496 if (err2 < 0)
497 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err);
498
499 if (err1 != 0 && err2 != 0)
500 err = err1;
501 break;
502 }
503 case VIDIOCCAPTURE: /* turn on/off preview */
504 {
505 int *on = arg;
506
507 if (0 == *on) {
508 /* dirty hack time. But v4l1 has no STREAMOFF
509 * equivalent in the API, and this one at
510 * least comes close ... */
511 drv(inode, file, VIDIOC_STREAMOFF, &captype);
512 }
513 err = drv(inode, file, VIDIOC_OVERLAY, arg);
514 if (err < 0)
515 dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n",err);
516 break;
517 }
518 case VIDIOCGCHAN: /* get input information */
519 {
520 struct video_channel *chan = arg;
521
522 memset(&input2,0,sizeof(input2));
523 input2.index = chan->channel;
524 err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
525 if (err < 0) {
526 dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
527 "channel=%d err=%d\n",chan->channel,err);
528 break;
529 }
530 chan->channel = input2.index;
531 memcpy(chan->name, input2.name,
532 min(sizeof(chan->name), sizeof(input2.name)));
533 chan->name[sizeof(chan->name) - 1] = 0;
534 chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
535 chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
536 switch (input2.type) {
537 case V4L2_INPUT_TYPE_TUNER:
538 chan->type = VIDEO_TYPE_TV;
539 break;
540 default:
541 case V4L2_INPUT_TYPE_CAMERA:
542 chan->type = VIDEO_TYPE_CAMERA;
543 break;
544 }
545 chan->norm = 0;
546 err = drv(inode, file, VIDIOC_G_STD, &sid);
547 if (err < 0)
548 dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n",err);
549 if (err == 0) {
550 if (sid & V4L2_STD_PAL)
551 chan->norm = VIDEO_MODE_PAL;
552 if (sid & V4L2_STD_NTSC)
553 chan->norm = VIDEO_MODE_NTSC;
554 if (sid & V4L2_STD_SECAM)
555 chan->norm = VIDEO_MODE_SECAM;
556 }
557 break;
558 }
559 case VIDIOCSCHAN: /* set input */
560 {
561 struct video_channel *chan = arg;
562
563 sid = 0;
564 err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
565 if (err < 0)
566 dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n",err);
567 switch (chan->norm) {
568 case VIDEO_MODE_PAL:
569 sid = V4L2_STD_PAL;
570 break;
571 case VIDEO_MODE_NTSC:
572 sid = V4L2_STD_NTSC;
573 break;
574 case VIDEO_MODE_SECAM:
575 sid = V4L2_STD_SECAM;
576 break;
577 }
578 if (0 != sid) {
579 err = drv(inode, file, VIDIOC_S_STD, &sid);
580 if (err < 0)
581 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n",err);
582 }
583 break;
584 }
585 case VIDIOCGPICT: /* get tone controls & partial capture format */
586 {
587 struct video_picture *pict = arg;
588
589 pict->brightness = get_v4l_control(inode, file,
590 V4L2_CID_BRIGHTNESS,drv);
591 pict->hue = get_v4l_control(inode, file,
592 V4L2_CID_HUE, drv);
593 pict->contrast = get_v4l_control(inode, file,
594 V4L2_CID_CONTRAST, drv);
595 pict->colour = get_v4l_control(inode, file,
596 V4L2_CID_SATURATION, drv);
597 pict->whiteness = get_v4l_control(inode, file,
598 V4L2_CID_WHITENESS, drv);
599
600 fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL);
601 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
602 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
603 if (err < 0) {
604 dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n",err);
605 break;
606 }
607
608 pict->depth = ((fmt2->fmt.pix.bytesperline<<3)
609 + (fmt2->fmt.pix.width-1) )
610 /fmt2->fmt.pix.width;
611 pict->palette = pixelformat_to_palette(
612 fmt2->fmt.pix.pixelformat);
613 break;
614 }
615 case VIDIOCSPICT: /* set tone controls & partial capture format */
616 {
617 struct video_picture *pict = arg;
618 int mem_err = 0, ovl_err = 0;
619
620 memset(&fbuf2, 0, sizeof(fbuf2));
621
622 set_v4l_control(inode, file,
623 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
624 set_v4l_control(inode, file,
625 V4L2_CID_HUE, pict->hue, drv);
626 set_v4l_control(inode, file,
627 V4L2_CID_CONTRAST, pict->contrast, drv);
628 set_v4l_control(inode, file,
629 V4L2_CID_SATURATION, pict->colour, drv);
630 set_v4l_control(inode, file,
631 V4L2_CID_WHITENESS, pict->whiteness, drv);
632 /*
633 * V4L1 uses this ioctl to set both memory capture and overlay
634 * pixel format, while V4L2 has two different ioctls for this.
635 * Some cards may not support one or the other, and may support
636 * different pixel formats for memory vs overlay.
637 */
638
639 fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL);
640 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
641 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
642 /* If VIDIOC_G_FMT failed, then the driver likely doesn't
643 support memory capture. Trying to set the memory capture
644 parameters would be pointless. */
645 if (err < 0) {
646 dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n",err);
647 mem_err = -1000; /* didn't even try */
648 } else if (fmt2->fmt.pix.pixelformat !=
649 palette_to_pixelformat(pict->palette)) {
650 fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
651 pict->palette);
652 mem_err = drv(inode, file, VIDIOC_S_FMT, fmt2);
653 if (mem_err < 0)
654 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
655 mem_err);
656 }
657
658 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
659 /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
660 support overlay. Trying to set the overlay parameters
661 would be quite pointless. */
662 if (err < 0) {
663 dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n",err);
664 ovl_err = -1000; /* didn't even try */
665 } else if (fbuf2.fmt.pixelformat !=
666 palette_to_pixelformat(pict->palette)) {
667 fbuf2.fmt.pixelformat = palette_to_pixelformat(
668 pict->palette);
669 ovl_err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
670 if (ovl_err < 0)
671 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
672 ovl_err);
673 }
674 if (ovl_err < 0 && mem_err < 0)
675 /* ioctl failed, couldn't set either parameter */
676 if (mem_err != -1000) {
677 err = mem_err;
678 } else if (ovl_err == -EPERM) {
679 err = 0;
680 } else {
681 err = ovl_err;
682 }
683 else
684 err = 0;
685 break;
686 }
687 case VIDIOCGTUNER: /* get tuner information */
688 {
689 struct video_tuner *tun = arg;
690
691 memset(&tun2,0,sizeof(tun2));
692 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
693 if (err < 0) {
694 dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n",err);
695 break;
696 }
697 memcpy(tun->name, tun2.name,
698 min(sizeof(tun->name), sizeof(tun2.name)));
699 tun->name[sizeof(tun->name) - 1] = 0;
700 tun->rangelow = tun2.rangelow;
701 tun->rangehigh = tun2.rangehigh;
702 tun->flags = 0;
703 tun->mode = VIDEO_MODE_AUTO;
704
705 for (i = 0; i < 64; i++) {
706 memset(&std2,0,sizeof(std2));
707 std2.index = i;
708 if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
709 break;
710 if (std2.id & V4L2_STD_PAL)
711 tun->flags |= VIDEO_TUNER_PAL;
712 if (std2.id & V4L2_STD_NTSC)
713 tun->flags |= VIDEO_TUNER_NTSC;
714 if (std2.id & V4L2_STD_SECAM)
715 tun->flags |= VIDEO_TUNER_SECAM;
716 }
717
718 err = drv(inode, file, VIDIOC_G_STD, &sid);
719 if (err < 0)
720 dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n",err);
721 if (err == 0) {
722 if (sid & V4L2_STD_PAL)
723 tun->mode = VIDEO_MODE_PAL;
724 if (sid & V4L2_STD_NTSC)
725 tun->mode = VIDEO_MODE_NTSC;
726 if (sid & V4L2_STD_SECAM)
727 tun->mode = VIDEO_MODE_SECAM;
728 }
729
730 if (tun2.capability & V4L2_TUNER_CAP_LOW)
731 tun->flags |= VIDEO_TUNER_LOW;
732 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
733 tun->flags |= VIDEO_TUNER_STEREO_ON;
734 tun->signal = tun2.signal;
735 break;
736 }
737 case VIDIOCSTUNER: /* select a tuner input */
738 {
739 struct video_tuner *tun = arg;
740 struct v4l2_tuner t;
741 memset(&t,0,sizeof(t));
742
743 t.index=tun->tuner;
744
745 err = drv(inode, file, VIDIOC_S_INPUT, &t);
746 if (err < 0)
747 dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n",err);
748
749 break;
750 }
751 case VIDIOCGFREQ: /* get frequency */
752 {
753 unsigned long *freq = arg;
754 memset(&freq2,0,sizeof(freq2));
755
756 freq2.tuner = 0;
757 err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
758 if (err < 0)
759 dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n",err);
760 if (0 == err)
761 *freq = freq2.frequency;
762 break;
763 }
764 case VIDIOCSFREQ: /* set frequency */
765 {
766 unsigned long *freq = arg;
767 memset(&freq2,0,sizeof(freq2));
768
769 drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
770 freq2.frequency = *freq;
771 err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
772 if (err < 0)
773 dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n",err);
774 break;
775 }
776 case VIDIOCGAUDIO: /* get audio properties/controls */
777 {
778 struct video_audio *aud = arg;
779 memset(&aud2,0,sizeof(aud2));
780
781 err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
782 if (err < 0) {
783 dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n",err);
784 break;
785 }
786 memcpy(aud->name, aud2.name,
787 min(sizeof(aud->name), sizeof(aud2.name)));
788 aud->name[sizeof(aud->name) - 1] = 0;
789 aud->audio = aud2.index;
790 aud->flags = 0;
791 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
792 if (i >= 0) {
793 aud->volume = i;
794 aud->flags |= VIDEO_AUDIO_VOLUME;
795 }
796 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
797 if (i >= 0) {
798 aud->bass = i;
799 aud->flags |= VIDEO_AUDIO_BASS;
800 }
801 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
802 if (i >= 0) {
803 aud->treble = i;
804 aud->flags |= VIDEO_AUDIO_TREBLE;
805 }
806 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
807 if (i >= 0) {
808 aud->balance = i;
809 aud->flags |= VIDEO_AUDIO_BALANCE;
810 }
811 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
812 if (i >= 0) {
813 if (i)
814 aud->flags |= VIDEO_AUDIO_MUTE;
815 aud->flags |= VIDEO_AUDIO_MUTABLE;
816 }
817 aud->step = 1;
818 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
819 if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
820 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
821 aud->step = qctrl2.step;
822 aud->mode = 0;
823
824 memset(&tun2,0,sizeof(tun2));
825 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
826 if (err < 0) {
827 dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n",err);
828 err = 0;
829 break;
830 }
831
832 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
833 aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
834 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
835 aud->mode = VIDEO_SOUND_STEREO;
836 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
837 aud->mode = VIDEO_SOUND_MONO;
838 break;
839 }
840 case VIDIOCSAUDIO: /* set audio controls */
841 {
842 struct video_audio *aud = arg;
843
844 memset(&aud2,0,sizeof(aud2));
845 memset(&tun2,0,sizeof(tun2));
846
847 aud2.index = aud->audio;
848 err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
849 if (err < 0) {
850 dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n",err);
851 break;
852 }
853
854 set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
855 aud->volume, drv);
856 set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
857 aud->bass, drv);
858 set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
859 aud->treble, drv);
860 set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
861 aud->balance, drv);
862 set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
863 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
864
865 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
866 if (err < 0)
867 dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n",err);
868 if (err == 0) {
869 switch (aud->mode) {
870 default:
871 case VIDEO_SOUND_MONO:
872 case VIDEO_SOUND_LANG1:
873 tun2.audmode = V4L2_TUNER_MODE_MONO;
874 break;
875 case VIDEO_SOUND_STEREO:
876 tun2.audmode = V4L2_TUNER_MODE_STEREO;
877 break;
878 case VIDEO_SOUND_LANG2:
879 tun2.audmode = V4L2_TUNER_MODE_LANG2;
880 break;
881 }
882 err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
883 if (err < 0)
884 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n",err);
885 }
886 err = 0;
887 break;
888 }
889 case VIDIOCMCAPTURE: /* capture a frame */
890 {
891 struct video_mmap *mm = arg;
892
893 fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL);
894 memset(&buf2,0,sizeof(buf2));
895
896 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
897 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
898 if (err < 0) {
899 dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n",err);
900 break;
901 }
902 if (mm->width != fmt2->fmt.pix.width ||
903 mm->height != fmt2->fmt.pix.height ||
904 palette_to_pixelformat(mm->format) !=
905 fmt2->fmt.pix.pixelformat)
906 {/* New capture format... */
907 fmt2->fmt.pix.width = mm->width;
908 fmt2->fmt.pix.height = mm->height;
909 fmt2->fmt.pix.pixelformat =
910 palette_to_pixelformat(mm->format);
911 fmt2->fmt.pix.field = V4L2_FIELD_ANY;
912 fmt2->fmt.pix.bytesperline = 0;
913 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
914 if (err < 0) {
915 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err);
916 break;
917 }
918 }
919 buf2.index = mm->frame;
920 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
921 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
922 if (err < 0) {
923 dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n",err);
924 break;
925 }
926 err = drv(inode, file, VIDIOC_QBUF, &buf2);
927 if (err < 0) {
928 dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n",err);
929 break;
930 }
931 err = drv(inode, file, VIDIOC_STREAMON, &captype);
932 if (err < 0)
933 dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err);
934 break;
935 }
936 case VIDIOCSYNC: /* wait for a frame */
937 {
938 int *i = arg;
939
940 memset(&buf2,0,sizeof(buf2));
941 buf2.index = *i;
942 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
943 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
944 if (err < 0) {
945 /* No such buffer */
946 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
947 break;
948 }
949 if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) {
950 /* Buffer is not mapped */
951 err = -EINVAL;
952 break;
953 }
954
955 /* make sure capture actually runs so we don't block forever */
956 err = drv(inode, file, VIDIOC_STREAMON, &captype);
957 if (err < 0) {
958 dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n",err);
959 break;
960 }
961
962 /* Loop as long as the buffer is queued, but not done */
963 while ((buf2.flags &
964 (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
965 == V4L2_BUF_FLAG_QUEUED)
966 {
967 err = poll_one(file);
968 if (err < 0 || /* error or sleep was interrupted */
969 err == 0) /* timeout? Shouldn't occur. */
970 break;
971 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
972 if (err < 0)
973 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
974 }
975 if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */
976 break;
977 do {
978 err = drv(inode, file, VIDIOC_DQBUF, &buf2);
979 if (err < 0)
980 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n",err);
981 } while (err == 0 && buf2.index != *i);
982 break;
983 }
984
985 case VIDIOCGVBIFMT: /* query VBI data capture format */
986 {
987 struct vbi_format *fmt = arg;
988
989 fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL);
990 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
991
992 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
993 if (err < 0) {
994 dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
995 break;
996 }
997 if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
998 err = -EINVAL;
999 break;
1000 }
1001 memset(fmt, 0, sizeof(*fmt));
1002 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1003 fmt->sampling_rate = fmt2->fmt.vbi.sampling_rate;
1004 fmt->sample_format = VIDEO_PALETTE_RAW;
1005 fmt->start[0] = fmt2->fmt.vbi.start[0];
1006 fmt->count[0] = fmt2->fmt.vbi.count[0];
1007 fmt->start[1] = fmt2->fmt.vbi.start[1];
1008 fmt->count[1] = fmt2->fmt.vbi.count[1];
1009 fmt->flags = fmt2->fmt.vbi.flags & 0x03;
1010 break;
1011 }
1012 case VIDIOCSVBIFMT:
1013 {
1014 struct vbi_format *fmt = arg;
1015
1016 if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1017 err = -EINVAL;
1018 break;
1019 }
1020
1021 fmt2 = kzalloc(sizeof(*fmt2),GFP_KERNEL);
1022
1023 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1024 fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1025 fmt2->fmt.vbi.sampling_rate = fmt->sampling_rate;
1026 fmt2->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1027 fmt2->fmt.vbi.start[0] = fmt->start[0];
1028 fmt2->fmt.vbi.count[0] = fmt->count[0];
1029 fmt2->fmt.vbi.start[1] = fmt->start[1];
1030 fmt2->fmt.vbi.count[1] = fmt->count[1];
1031 fmt2->fmt.vbi.flags = fmt->flags;
1032 err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
1033 if (err < 0) {
1034 dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
1035 break;
1036 }
1037
1038 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1039 fmt2->fmt.vbi.sampling_rate != fmt->sampling_rate ||
1040 fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY ||
1041 fmt2->fmt.vbi.start[0] != fmt->start[0] ||
1042 fmt2->fmt.vbi.count[0] != fmt->count[0] ||
1043 fmt2->fmt.vbi.start[1] != fmt->start[1] ||
1044 fmt2->fmt.vbi.count[1] != fmt->count[1] ||
1045 fmt2->fmt.vbi.flags != fmt->flags) {
1046 err = -EINVAL;
1047 break;
1048 }
1049 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
1050 if (err < 0)
1051 dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1052 break;
1053 }
1054
1055 default:
1056 err = -ENOIOCTLCMD;
1057 break;
1058 }
1059
1060 kfree(cap2);
1061 kfree(fmt2);
1062 return err;
1063 }
1064
1065 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1066
1067 /*
1068 * Local variables:
1069 * c-basic-offset: 8
1070 * End:
1071 */
WRT350N Kernel Patches