4 * Backward Compatibility Layer
6 * Support subroutines for providing V4L2 drivers with backward
7 * compatibility with applications using the old API.
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.
14 * Author: Bill Dirks <bill@thedirks.org>
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>
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>
35 #include <asm/uaccess.h>
36 #include <asm/system.h>
37 #include <asm/pgtable.h>
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");
46 #define dprintk(fmt, arg...) \
49 printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg);\
53 * I O C T L T R A N S L A T I O N
55 * From here on down is the code for translating the numerous
56 * ioctl commands from the old API to the new API.
60 get_v4l_control(struct file *file,
64 struct v4l2_queryctrl qctrl2;
65 struct v4l2_control ctrl2;
69 err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
71 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
72 if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) {
74 err = drv(file, VIDIOC_G_CTRL, &ctrl2);
76 dprintk("VIDIOC_G_CTRL: %d\n", err);
79 return DIV_ROUND_CLOSEST((ctrl2.value-qctrl2.minimum) * 65535,
80 qctrl2.maximum - qctrl2.minimum);
86 set_v4l_control(struct file *file,
91 struct v4l2_queryctrl qctrl2;
92 struct v4l2_control ctrl2;
96 err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
98 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
100 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
101 !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED)) {
106 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
108 ctrl2.id = qctrl2.id;
110 (value * (qctrl2.maximum - qctrl2.minimum)
113 ctrl2.value += qctrl2.minimum;
114 err = drv(file, VIDIOC_S_CTRL, &ctrl2);
116 dprintk("VIDIOC_S_CTRL: %d\n", err);
121 /* ----------------------------------------------------------------- */
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,
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,
141 static unsigned int __pure
142 palette_to_pixelformat(unsigned int palette)
144 if (palette < ARRAY_SIZE(palette2pixelformat))
145 return palette2pixelformat[palette];
150 static unsigned int __attribute_const__
151 pixelformat_to_palette(unsigned int pixelformat)
154 switch (pixelformat) {
155 case V4L2_PIX_FMT_GREY:
156 palette = VIDEO_PALETTE_GREY;
158 case V4L2_PIX_FMT_RGB555:
159 palette = VIDEO_PALETTE_RGB555;
161 case V4L2_PIX_FMT_RGB565:
162 palette = VIDEO_PALETTE_RGB565;
164 case V4L2_PIX_FMT_BGR24:
165 palette = VIDEO_PALETTE_RGB24;
167 case V4L2_PIX_FMT_BGR32:
168 palette = VIDEO_PALETTE_RGB32;
170 /* yuv packed pixel */
171 case V4L2_PIX_FMT_YUYV:
172 palette = VIDEO_PALETTE_YUYV;
174 case V4L2_PIX_FMT_UYVY:
175 palette = VIDEO_PALETTE_UYVY;
178 case V4L2_PIX_FMT_YUV410:
179 palette = VIDEO_PALETTE_YUV420;
181 case V4L2_PIX_FMT_YUV420:
182 palette = VIDEO_PALETTE_YUV420;
184 case V4L2_PIX_FMT_YUV411P:
185 palette = VIDEO_PALETTE_YUV411P;
187 case V4L2_PIX_FMT_YUV422P:
188 palette = VIDEO_PALETTE_YUV422P;
194 /* ----------------------------------------------------------------- */
196 static int poll_one(struct file *file, struct poll_wqueues *pwq)
205 mask = file->f_op->poll(file, table);
209 if (signal_pending(current)) {
210 retval = -ERESTARTSYS;
213 poll_schedule(pwq, TASK_INTERRUPTIBLE);
219 static int count_inputs(
223 struct v4l2_input input2;
227 memset(&input2, 0, sizeof(input2));
229 if (0 != drv(file, VIDIOC_ENUMINPUT, &input2))
235 static int check_size(
241 struct v4l2_fmtdesc desc2;
242 struct v4l2_format fmt2;
244 memset(&desc2, 0, sizeof(desc2));
245 memset(&fmt2, 0, sizeof(fmt2));
247 desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
248 if (0 != drv(file, VIDIOC_ENUM_FMT, &desc2))
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))
258 *maxw = fmt2.fmt.pix.width;
259 *maxh = fmt2.fmt.pix.height;
265 /* ----------------------------------------------------------------- */
267 static noinline long v4l1_compat_get_capabilities(
268 struct video_capability *cap,
273 struct v4l2_framebuffer fbuf;
274 struct v4l2_capability *cap2;
276 cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
281 memset(cap, 0, sizeof(*cap));
282 memset(&fbuf, 0, sizeof(fbuf));
284 err = drv(file, VIDIOC_QUERYCAP, cap2);
286 dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %ld\n", err);
289 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
290 err = drv(file, VIDIOC_G_FBUF, &fbuf);
292 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %ld\n", err);
293 memset(&fbuf, 0, sizeof(fbuf));
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;
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 */
324 static noinline long v4l1_compat_get_frame_buffer(
325 struct video_buffer *buffer,
330 struct v4l2_framebuffer fbuf;
332 memset(buffer, 0, sizeof(*buffer));
333 memset(&fbuf, 0, sizeof(fbuf));
335 err = drv(file, VIDIOC_G_FBUF, &fbuf);
337 dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %ld\n", err);
340 buffer->base = fbuf.base;
341 buffer->height = fbuf.fmt.height;
342 buffer->width = fbuf.fmt.width;
344 switch (fbuf.fmt.pixelformat) {
345 case V4L2_PIX_FMT_RGB332:
348 case V4L2_PIX_FMT_RGB555:
351 case V4L2_PIX_FMT_RGB565:
354 case V4L2_PIX_FMT_BGR24:
357 case V4L2_PIX_FMT_BGR32:
363 if (fbuf.fmt.bytesperline) {
364 buffer->bytesperline = fbuf.fmt.bytesperline;
365 if (!buffer->depth && buffer->width)
366 buffer->depth = ((fbuf.fmt.bytesperline<<3)
370 buffer->bytesperline =
371 (buffer->width * buffer->depth + 7) & 7;
372 buffer->bytesperline >>= 3;
378 static noinline long v4l1_compat_set_frame_buffer(
379 struct video_buffer *buffer,
384 struct v4l2_framebuffer fbuf;
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) {
392 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
395 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
398 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
401 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
404 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
407 fbuf.fmt.bytesperline = buffer->bytesperline;
408 err = drv(file, VIDIOC_S_FBUF, &fbuf);
410 dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %ld\n", err);
414 static noinline long v4l1_compat_get_win_cap_dimensions(
415 struct video_window *win,
420 struct v4l2_format *fmt;
422 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
427 memset(win, 0, sizeof(*win));
429 fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
430 err = drv(file, VIDIOC_G_FMT, fmt);
432 dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %ld\n", err);
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;
444 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
445 err = drv(file, VIDIOC_G_FMT, fmt);
447 dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %ld\n", err);
452 win->width = fmt->fmt.pix.width;
453 win->height = fmt->fmt.pix.height;
462 static noinline long v4l1_compat_set_win_cap_dimensions(
463 struct video_window *win,
467 long err, err1, err2;
468 struct v4l2_format *fmt;
470 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
475 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
476 drv(file, VIDIOC_STREAMOFF, &fmt->type);
477 err1 = drv(file, VIDIOC_G_FMT, fmt);
479 dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %ld\n", err1);
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);
487 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %ld\n",
489 win->width = fmt->fmt.pix.width;
490 win->height = fmt->fmt.pix.height;
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);
504 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %ld\n", err2);
506 if (err1 != 0 && err2 != 0)
514 static noinline long v4l1_compat_turn_preview_on_off(
520 enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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);
528 err = drv(file, VIDIOC_OVERLAY, on);
530 dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %ld\n", err);
534 static noinline long v4l1_compat_get_input_info(
535 struct video_channel *chan,
540 struct v4l2_input input2;
543 memset(&input2, 0, sizeof(input2));
544 input2.index = chan->channel;
545 err = drv(file, VIDIOC_ENUMINPUT, &input2);
547 dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
548 "channel=%d err=%ld\n", chan->channel, err);
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;
562 case V4L2_INPUT_TYPE_CAMERA:
563 chan->type = VIDEO_TYPE_CAMERA;
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;
583 static noinline long v4l1_compat_set_input(
584 struct video_channel *chan,
591 err = drv(file, VIDIOC_S_INPUT, &chan->channel);
593 dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %ld\n", err);
594 switch (chan->norm) {
598 case VIDEO_MODE_NTSC:
601 case VIDEO_MODE_SECAM:
602 sid = V4L2_STD_SECAM;
604 case VIDEO_MODE_AUTO:
609 err = drv(file, VIDIOC_S_STD, &sid);
611 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %ld\n", err);
616 static noinline long v4l1_compat_get_picture(
617 struct video_picture *pict,
622 struct v4l2_format *fmt;
624 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
630 pict->brightness = get_v4l_control(file,
631 V4L2_CID_BRIGHTNESS, drv);
632 pict->hue = get_v4l_control(file,
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);
641 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
642 err = drv(file, VIDIOC_G_FMT, fmt);
644 dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %ld\n", err);
648 pict->depth = ((fmt->fmt.pix.bytesperline << 3)
649 + (fmt->fmt.pix.width - 1))
650 / fmt->fmt.pix.width;
651 pict->palette = pixelformat_to_palette(
652 fmt->fmt.pix.pixelformat);
658 static noinline long v4l1_compat_set_picture(
659 struct video_picture *pict,
664 struct v4l2_framebuffer fbuf;
665 int mem_err = 0, ovl_err = 0;
666 struct v4l2_format *fmt;
668 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
673 memset(&fbuf, 0, sizeof(fbuf));
675 set_v4l_control(file,
676 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
677 set_v4l_control(file,
678 V4L2_CID_HUE, pict->hue, drv);
679 set_v4l_control(file,
680 V4L2_CID_CONTRAST, pict->contrast, drv);
681 set_v4l_control(file,
682 V4L2_CID_SATURATION, pict->colour, drv);
683 set_v4l_control(file,
684 V4L2_CID_WHITENESS, pict->whiteness, drv);
686 * V4L1 uses this ioctl to set both memory capture and overlay
687 * pixel format, while V4L2 has two different ioctls for this.
688 * Some cards may not support one or the other, and may support
689 * different pixel formats for memory vs overlay.
692 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
693 err = drv(file, VIDIOC_G_FMT, fmt);
694 /* If VIDIOC_G_FMT failed, then the driver likely doesn't
695 support memory capture. Trying to set the memory capture
696 parameters would be pointless. */
698 dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %ld\n", err);
699 mem_err = -1000; /* didn't even try */
700 } else if (fmt->fmt.pix.pixelformat !=
701 palette_to_pixelformat(pict->palette)) {
702 fmt->fmt.pix.pixelformat = palette_to_pixelformat(
704 mem_err = drv(file, VIDIOC_S_FMT, fmt);
706 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
710 err = drv(file, VIDIOC_G_FBUF, &fbuf);
711 /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
712 support overlay. Trying to set the overlay parameters
713 would be quite pointless. */
715 dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %ld\n", err);
716 ovl_err = -1000; /* didn't even try */
717 } else if (fbuf.fmt.pixelformat !=
718 palette_to_pixelformat(pict->palette)) {
719 fbuf.fmt.pixelformat = palette_to_pixelformat(
721 ovl_err = drv(file, VIDIOC_S_FBUF, &fbuf);
723 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
726 if (ovl_err < 0 && mem_err < 0) {
727 /* ioctl failed, couldn't set either parameter */
728 if (mem_err != -1000)
730 else if (ovl_err == -EPERM)
740 static noinline long v4l1_compat_get_tuner(
741 struct video_tuner *tun,
747 struct v4l2_tuner tun2;
748 struct v4l2_standard std2;
751 memset(&tun2, 0, sizeof(tun2));
752 err = drv(file, VIDIOC_G_TUNER, &tun2);
754 dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %ld\n", err);
757 memcpy(tun->name, tun2.name,
758 min(sizeof(tun->name), sizeof(tun2.name)));
759 tun->name[sizeof(tun->name) - 1] = 0;
760 tun->rangelow = tun2.rangelow;
761 tun->rangehigh = tun2.rangehigh;
763 tun->mode = VIDEO_MODE_AUTO;
765 for (i = 0; i < 64; i++) {
766 memset(&std2, 0, sizeof(std2));
768 if (0 != drv(file, VIDIOC_ENUMSTD, &std2))
770 if (std2.id & V4L2_STD_PAL)
771 tun->flags |= VIDEO_TUNER_PAL;
772 if (std2.id & V4L2_STD_NTSC)
773 tun->flags |= VIDEO_TUNER_NTSC;
774 if (std2.id & V4L2_STD_SECAM)
775 tun->flags |= VIDEO_TUNER_SECAM;
778 /* Note: G_STD might not be present for radio receivers,
779 * so we should ignore any errors. */
780 if (drv(file, VIDIOC_G_STD, &sid) == 0) {
781 if (sid & V4L2_STD_PAL)
782 tun->mode = VIDEO_MODE_PAL;
783 if (sid & V4L2_STD_NTSC)
784 tun->mode = VIDEO_MODE_NTSC;
785 if (sid & V4L2_STD_SECAM)
786 tun->mode = VIDEO_MODE_SECAM;
789 if (tun2.capability & V4L2_TUNER_CAP_LOW)
790 tun->flags |= VIDEO_TUNER_LOW;
791 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
792 tun->flags |= VIDEO_TUNER_STEREO_ON;
793 tun->signal = tun2.signal;
798 static noinline long v4l1_compat_select_tuner(
799 struct video_tuner *tun,
804 struct v4l2_tuner t;/*84 bytes on x86_64*/
805 memset(&t, 0, sizeof(t));
807 t.index = tun->tuner;
809 err = drv(file, VIDIOC_S_TUNER, &t);
811 dprintk("VIDIOCSTUNER / VIDIOC_S_TUNER: %ld\n", err);
815 static noinline long v4l1_compat_get_frequency(
821 struct v4l2_frequency freq2;
822 memset(&freq2, 0, sizeof(freq2));
825 err = drv(file, VIDIOC_G_FREQUENCY, &freq2);
827 dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %ld\n", err);
829 *freq = freq2.frequency;
833 static noinline long v4l1_compat_set_frequency(
839 struct v4l2_frequency freq2;
840 memset(&freq2, 0, sizeof(freq2));
842 drv(file, VIDIOC_G_FREQUENCY, &freq2);
843 freq2.frequency = *freq;
844 err = drv(file, VIDIOC_S_FREQUENCY, &freq2);
846 dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %ld\n", err);
850 static noinline long v4l1_compat_get_audio(
851 struct video_audio *aud,
857 struct v4l2_queryctrl qctrl2;
858 struct v4l2_audio aud2;
859 struct v4l2_tuner tun2;
860 memset(&aud2, 0, sizeof(aud2));
862 err = drv(file, VIDIOC_G_AUDIO, &aud2);
864 dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %ld\n", err);
867 memcpy(aud->name, aud2.name,
868 min(sizeof(aud->name), sizeof(aud2.name)));
869 aud->name[sizeof(aud->name) - 1] = 0;
870 aud->audio = aud2.index;
872 i = get_v4l_control(file, V4L2_CID_AUDIO_VOLUME, drv);
875 aud->flags |= VIDEO_AUDIO_VOLUME;
877 i = get_v4l_control(file, V4L2_CID_AUDIO_BASS, drv);
880 aud->flags |= VIDEO_AUDIO_BASS;
882 i = get_v4l_control(file, V4L2_CID_AUDIO_TREBLE, drv);
885 aud->flags |= VIDEO_AUDIO_TREBLE;
887 i = get_v4l_control(file, V4L2_CID_AUDIO_BALANCE, drv);
890 aud->flags |= VIDEO_AUDIO_BALANCE;
892 i = get_v4l_control(file, V4L2_CID_AUDIO_MUTE, drv);
895 aud->flags |= VIDEO_AUDIO_MUTE;
896 aud->flags |= VIDEO_AUDIO_MUTABLE;
899 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
900 if (drv(file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
901 !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
902 aud->step = qctrl2.step;
905 memset(&tun2, 0, sizeof(tun2));
906 err = drv(file, VIDIOC_G_TUNER, &tun2);
908 dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %ld\n", err);
913 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
914 aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
915 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
916 aud->mode = VIDEO_SOUND_STEREO;
917 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
918 aud->mode = VIDEO_SOUND_MONO;
923 static noinline long v4l1_compat_set_audio(
924 struct video_audio *aud,
929 struct v4l2_audio aud2;
930 struct v4l2_tuner tun2;
932 memset(&aud2, 0, sizeof(aud2));
933 memset(&tun2, 0, sizeof(tun2));
935 aud2.index = aud->audio;
936 err = drv(file, VIDIOC_S_AUDIO, &aud2);
938 dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %ld\n", err);
942 set_v4l_control(file, V4L2_CID_AUDIO_VOLUME,
944 set_v4l_control(file, V4L2_CID_AUDIO_BASS,
946 set_v4l_control(file, V4L2_CID_AUDIO_TREBLE,
948 set_v4l_control(file, V4L2_CID_AUDIO_BALANCE,
950 set_v4l_control(file, V4L2_CID_AUDIO_MUTE,
951 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
953 err = drv(file, VIDIOC_G_TUNER, &tun2);
955 dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %ld\n", err);
959 case VIDEO_SOUND_MONO:
960 case VIDEO_SOUND_LANG1:
961 tun2.audmode = V4L2_TUNER_MODE_MONO;
963 case VIDEO_SOUND_STEREO:
964 tun2.audmode = V4L2_TUNER_MODE_STEREO;
966 case VIDEO_SOUND_LANG2:
967 tun2.audmode = V4L2_TUNER_MODE_LANG2;
970 err = drv(file, VIDIOC_S_TUNER, &tun2);
972 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %ld\n", err);
979 static noinline long v4l1_compat_capture_frame(
980 struct video_mmap *mm,
985 enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
986 struct v4l2_buffer buf;
987 struct v4l2_format *fmt;
989 fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
994 memset(&buf, 0, sizeof(buf));
996 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
997 err = drv(file, VIDIOC_G_FMT, fmt);
999 dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %ld\n", err);
1002 if (mm->width != fmt->fmt.pix.width ||
1003 mm->height != fmt->fmt.pix.height ||
1004 palette_to_pixelformat(mm->format) !=
1005 fmt->fmt.pix.pixelformat) {
1006 /* New capture format... */
1007 fmt->fmt.pix.width = mm->width;
1008 fmt->fmt.pix.height = mm->height;
1009 fmt->fmt.pix.pixelformat =
1010 palette_to_pixelformat(mm->format);
1011 fmt->fmt.pix.field = V4L2_FIELD_ANY;
1012 fmt->fmt.pix.bytesperline = 0;
1013 err = drv(file, VIDIOC_S_FMT, fmt);
1015 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %ld\n", err);
1019 buf.index = mm->frame;
1020 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1021 err = drv(file, VIDIOC_QUERYBUF, &buf);
1023 dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %ld\n", err);
1026 err = drv(file, VIDIOC_QBUF, &buf);
1028 dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %ld\n", err);
1031 err = drv(file, VIDIOC_STREAMON, &captype);
1033 dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %ld\n", err);
1039 static noinline long v4l1_compat_sync(
1045 enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1046 struct v4l2_buffer buf;
1047 struct poll_wqueues *pwq;
1049 memset(&buf, 0, sizeof(buf));
1051 buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1052 err = drv(file, VIDIOC_QUERYBUF, &buf);
1054 /* No such buffer */
1055 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %ld\n", err);
1058 if (!(buf.flags & V4L2_BUF_FLAG_MAPPED)) {
1059 /* Buffer is not mapped */
1064 /* make sure capture actually runs so we don't block forever */
1065 err = drv(file, VIDIOC_STREAMON, &captype);
1067 dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %ld\n", err);
1071 pwq = kmalloc(sizeof(*pwq), GFP_KERNEL);
1072 /* Loop as long as the buffer is queued, but not done */
1073 while ((buf.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
1074 == V4L2_BUF_FLAG_QUEUED) {
1075 err = poll_one(file, pwq);
1076 if (err < 0 || /* error or sleep was interrupted */
1077 err == 0) /* timeout? Shouldn't occur. */
1079 err = drv(file, VIDIOC_QUERYBUF, &buf);
1081 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %ld\n", err);
1084 if (!(buf.flags & V4L2_BUF_FLAG_DONE)) /* not done */
1087 err = drv(file, VIDIOC_DQBUF, &buf);
1089 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %ld\n", err);
1090 } while (err == 0 && buf.index != *i);
1095 static noinline long v4l1_compat_get_vbi_format(
1096 struct vbi_format *fmt,
1101 struct v4l2_format *fmt2;
1103 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1108 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1110 err = drv(file, VIDIOC_G_FMT, fmt2);
1112 dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %ld\n", err);
1115 if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1119 memset(fmt, 0, sizeof(*fmt));
1120 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1121 fmt->sampling_rate = fmt2->fmt.vbi.sampling_rate;
1122 fmt->sample_format = VIDEO_PALETTE_RAW;
1123 fmt->start[0] = fmt2->fmt.vbi.start[0];
1124 fmt->count[0] = fmt2->fmt.vbi.count[0];
1125 fmt->start[1] = fmt2->fmt.vbi.start[1];
1126 fmt->count[1] = fmt2->fmt.vbi.count[1];
1127 fmt->flags = fmt2->fmt.vbi.flags & 0x03;
1133 static noinline long v4l1_compat_set_vbi_format(
1134 struct vbi_format *fmt,
1139 struct v4l2_format *fmt2 = NULL;
1141 if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1146 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1151 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1152 fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1153 fmt2->fmt.vbi.sampling_rate = fmt->sampling_rate;
1154 fmt2->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1155 fmt2->fmt.vbi.start[0] = fmt->start[0];
1156 fmt2->fmt.vbi.count[0] = fmt->count[0];
1157 fmt2->fmt.vbi.start[1] = fmt->start[1];
1158 fmt2->fmt.vbi.count[1] = fmt->count[1];
1159 fmt2->fmt.vbi.flags = fmt->flags;
1160 err = drv(file, VIDIOC_TRY_FMT, fmt2);
1162 dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %ld\n", err);
1166 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1167 fmt2->fmt.vbi.sampling_rate != fmt->sampling_rate ||
1168 fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY ||
1169 fmt2->fmt.vbi.start[0] != fmt->start[0] ||
1170 fmt2->fmt.vbi.count[0] != fmt->count[0] ||
1171 fmt2->fmt.vbi.start[1] != fmt->start[1] ||
1172 fmt2->fmt.vbi.count[1] != fmt->count[1] ||
1173 fmt2->fmt.vbi.flags != fmt->flags) {
1177 err = drv(file, VIDIOC_S_FMT, fmt2);
1179 dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %ld\n", err);
1186 * This function is exported.
1189 v4l_compat_translate_ioctl(struct file *file,
1197 case VIDIOCGCAP: /* capability */
1198 err = v4l1_compat_get_capabilities(arg, file, drv);
1200 case VIDIOCGFBUF: /* get frame buffer */
1201 err = v4l1_compat_get_frame_buffer(arg, file, drv);
1203 case VIDIOCSFBUF: /* set frame buffer */
1204 err = v4l1_compat_set_frame_buffer(arg, file, drv);
1206 case VIDIOCGWIN: /* get window or capture dimensions */
1207 err = v4l1_compat_get_win_cap_dimensions(arg, file, drv);
1209 case VIDIOCSWIN: /* set window and/or capture dimensions */
1210 err = v4l1_compat_set_win_cap_dimensions(arg, file, drv);
1212 case VIDIOCCAPTURE: /* turn on/off preview */
1213 err = v4l1_compat_turn_preview_on_off(arg, file, drv);
1215 case VIDIOCGCHAN: /* get input information */
1216 err = v4l1_compat_get_input_info(arg, file, drv);
1218 case VIDIOCSCHAN: /* set input */
1219 err = v4l1_compat_set_input(arg, file, drv);
1221 case VIDIOCGPICT: /* get tone controls & partial capture format */
1222 err = v4l1_compat_get_picture(arg, file, drv);
1224 case VIDIOCSPICT: /* set tone controls & partial capture format */
1225 err = v4l1_compat_set_picture(arg, file, drv);
1227 case VIDIOCGTUNER: /* get tuner information */
1228 err = v4l1_compat_get_tuner(arg, file, drv);
1230 case VIDIOCSTUNER: /* select a tuner input */
1231 err = v4l1_compat_select_tuner(arg, file, drv);
1233 case VIDIOCGFREQ: /* get frequency */
1234 err = v4l1_compat_get_frequency(arg, file, drv);
1236 case VIDIOCSFREQ: /* set frequency */
1237 err = v4l1_compat_set_frequency(arg, file, drv);
1239 case VIDIOCGAUDIO: /* get audio properties/controls */
1240 err = v4l1_compat_get_audio(arg, file, drv);
1242 case VIDIOCSAUDIO: /* set audio controls */
1243 err = v4l1_compat_set_audio(arg, file, drv);
1245 case VIDIOCMCAPTURE: /* capture a frame */
1246 err = v4l1_compat_capture_frame(arg, file, drv);
1248 case VIDIOCSYNC: /* wait for a frame */
1249 err = v4l1_compat_sync(arg, file, drv);
1251 case VIDIOCGVBIFMT: /* query VBI data capture format */
1252 err = v4l1_compat_get_vbi_format(arg, file, drv);
1255 err = v4l1_compat_set_vbi_format(arg, file, drv);
1264 EXPORT_SYMBOL(v4l_compat_translate_ioctl);