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 <bdirks@pacbell.net>
  15  *              et al.
  16  *
  17  */
  18
  19 #include <linux/config.h>
  20
  21 #include <linux/init.h>
  22 #include <linux/module.h>
  23 #include <linux/moduleparam.h>
  24 #include <linux/types.h>
  25 #include <linux/kernel.h>
  26 #include <linux/sched.h>
  27 #include <linux/smp_lock.h>
  28 #include <linux/mm.h>
  29 #include <linux/fs.h>
  30 #include <linux/file.h>
  31 #include <linux/string.h>
  32 #include <linux/errno.h>
  33 #include <linux/slab.h>
  34 #include <linux/videodev.h>
  35
  36 #include <asm/uaccess.h>
  37 #include <asm/system.h>
  38 #include <asm/pgtable.h>
  39
  40 #ifdef CONFIG_KMOD
  41 #include <linux/kmod.h>
  42 #endif
  43
  44 static unsigned int debug  = 0;
  45 module_param(debug, int, 0644);
  46 MODULE_PARM_DESC(debug,"enable debug messages");
  47 MODULE_AUTHOR("Bill Dirks");
  48 MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
  49 MODULE_LICENSE("GPL");
  50
  51 #define dprintk(fmt, arg...)    if (debug) \
  52         printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg)
  53
  54 /*
  55  *      I O C T L   T R A N S L A T I O N
  56  *
  57  *      From here on down is the code for translating the numerous
  58  *      ioctl commands from the old API to the new API.
  59  */
  60
  61 static int
  62 get_v4l_control(struct inode            *inode,
  63                 struct file             *file,
  64                 int                     cid,
  65                 v4l2_kioctl             drv)
  66 {
  67         struct v4l2_queryctrl   qctrl2;
  68         struct v4l2_control     ctrl2;
  69         int                     err;
  70
  71         qctrl2.id = cid;
  72         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
  73         if (err < 0)
  74                 dprintk("VIDIOC_QUERYCTRL: %d\n",err);
  75         if (err == 0 &&
  76             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
  77         {
  78                 ctrl2.id = qctrl2.id;
  79                 err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
  80                 if (err < 0) {
  81                         dprintk("VIDIOC_G_CTRL: %d\n",err);
  82                         return 0;
  83                 }
  84                 return ((ctrl2.value - qctrl2.minimum) * 65535
  85                          + (qctrl2.maximum - qctrl2.minimum) / 2)
  86                         / (qctrl2.maximum - qctrl2.minimum);
  87         }
  88         return 0;
  89 }
  90
  91 static int
  92 set_v4l_control(struct inode            *inode,
  93                 struct file             *file,
  94                 int                     cid,
  95                 int                     value,
  96                 v4l2_kioctl             drv)
  97 {
  98         struct v4l2_queryctrl   qctrl2;
  99         struct v4l2_control     ctrl2;
 100         int                     err;
 101
 102         qctrl2.id = cid;
 103         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
 104         if (err < 0)
 105                 dprintk("VIDIOC_QUERYCTRL: %d\n",err);
 106         if (err == 0 &&
 107             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
 108             !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED))
 109         {
 110                 if (value < 0)
 111                         value = 0;
 112                 if (value > 65535)
 113                         value = 65535;
 114                 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
 115                         value = 65535;
 116                 ctrl2.id = qctrl2.id;
 117                 ctrl2.value =
 118                         (value * (qctrl2.maximum - qctrl2.minimum)
 119                          + 32767)
 120                         / 65535;
 121                 ctrl2.value += qctrl2.minimum;
 122                 err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2);
 123                 if (err < 0)
 124                         dprintk("VIDIOC_S_CTRL: %d\n",err);
 125         }
 126         return 0;
 127 }
 128
 129 /* ----------------------------------------------------------------- */
 130
 131 static int palette2pixelformat[] = {
 132         [VIDEO_PALETTE_GREY]    = V4L2_PIX_FMT_GREY,
 133         [VIDEO_PALETTE_RGB555]  = V4L2_PIX_FMT_RGB555,
 134         [VIDEO_PALETTE_RGB565]  = V4L2_PIX_FMT_RGB565,
 135         [VIDEO_PALETTE_RGB24]   = V4L2_PIX_FMT_BGR24,
 136         [VIDEO_PALETTE_RGB32]   = V4L2_PIX_FMT_BGR32,
 137         /* yuv packed pixel */
 138         [VIDEO_PALETTE_YUYV]    = V4L2_PIX_FMT_YUYV,
 139         [VIDEO_PALETTE_YUV422]  = V4L2_PIX_FMT_YUYV,
 140         [VIDEO_PALETTE_UYVY]    = V4L2_PIX_FMT_UYVY,
 141         /* yuv planar */
 142         [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
 143         [VIDEO_PALETTE_YUV420]  = V4L2_PIX_FMT_YUV420,
 144         [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
 145         [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
 146         [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
 147 };
 148
 149 static unsigned int
 150 palette_to_pixelformat(unsigned int palette)
 151 {
 152         if (palette < ARRAY_SIZE(palette2pixelformat))
 153                 return palette2pixelformat[palette];
 154         else
 155                 return 0;
 156 }
 157
 158 static unsigned int
 159 pixelformat_to_palette(int pixelformat)
 160 {
 161         int     palette = 0;
 162         switch (pixelformat)
 163         {
 164         case V4L2_PIX_FMT_GREY:
 165                 palette = VIDEO_PALETTE_GREY;
 166                 break;
 167         case V4L2_PIX_FMT_RGB555:
 168                 palette = VIDEO_PALETTE_RGB555;
 169                 break;
 170         case V4L2_PIX_FMT_RGB565:
 171                 palette = VIDEO_PALETTE_RGB565;
 172                 break;
 173         case V4L2_PIX_FMT_BGR24:
 174                 palette = VIDEO_PALETTE_RGB24;
 175                 break;
 176         case V4L2_PIX_FMT_BGR32:
 177                 palette = VIDEO_PALETTE_RGB32;
 178                 break;
 179         /* yuv packed pixel */
 180         case V4L2_PIX_FMT_YUYV:
 181                 palette = VIDEO_PALETTE_YUYV;
 182                 break;
 183         case V4L2_PIX_FMT_UYVY:
 184                 palette = VIDEO_PALETTE_UYVY;
 185                 break;
 186         /* yuv planar */
 187         case V4L2_PIX_FMT_YUV410:
 188                 palette = VIDEO_PALETTE_YUV420;
 189                 break;
 190         case V4L2_PIX_FMT_YUV420:
 191                 palette = VIDEO_PALETTE_YUV420;
 192                 break;
 193         case V4L2_PIX_FMT_YUV411P:
 194                 palette = VIDEO_PALETTE_YUV411P;
 195                 break;
 196         case V4L2_PIX_FMT_YUV422P:
 197                 palette = VIDEO_PALETTE_YUV422P;
 198                 break;
 199         }
 200         return palette;
 201 }
 202
 203 /* ----------------------------------------------------------------- */
 204
 205 static int poll_one(struct file *file)
 206 {
 207         int retval = 1;
 208         poll_table *table;
 209         struct poll_wqueues pwq;
 210
 211         poll_initwait(&pwq);
 212         table = &pwq.pt;
 213         for (;;) {
 214                 int mask;
 215                 set_current_state(TASK_INTERRUPTIBLE);
 216                 mask = file->f_op->poll(file, table);
 217                 if (mask & POLLIN)
 218                         break;
 219                 table = NULL;
 220                 if (signal_pending(current)) {
 221                         retval = -ERESTARTSYS;
 222                         break;
 223                 }
 224                 schedule();
 225         }
 226         set_current_state(TASK_RUNNING);
 227         poll_freewait(&pwq);
 228         return retval;
 229 }
 230
 231 static int count_inputs(struct inode         *inode,
 232                         struct file          *file,
 233                         v4l2_kioctl          drv)
 234 {
 235         struct v4l2_input input2;
 236         int i;
 237
 238         for (i = 0;; i++) {
 239                 memset(&input2,0,sizeof(input2));
 240                 input2.index = i;
 241                 if (0 != drv(inode,file,VIDIOC_ENUMINPUT, &input2))
 242                         break;
 243         }
 244         return i;
 245 }
 246
 247 static int check_size(struct inode         *inode,
 248                       struct file          *file,
 249                       v4l2_kioctl          drv,
 250                       int *maxw, int *maxh)
 251 {
 252         struct v4l2_fmtdesc desc2;
 253         struct v4l2_format  fmt2;
 254
 255         memset(&desc2,0,sizeof(desc2));
 256         memset(&fmt2,0,sizeof(fmt2));
 257
 258         desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 259         if (0 != drv(inode,file,VIDIOC_ENUM_FMT, &desc2))
 260                 goto done;
 261
 262         fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 263         fmt2.fmt.pix.width       = 10000;
 264         fmt2.fmt.pix.height      = 10000;
 265         fmt2.fmt.pix.pixelformat = desc2.pixelformat;
 266         if (0 != drv(inode,file,VIDIOC_TRY_FMT, &fmt2))
 267                 goto done;
 268
 269         *maxw = fmt2.fmt.pix.width;
 270         *maxh = fmt2.fmt.pix.height;
 271
 272  done:
 273         return 0;
 274 }
 275
 276 /* ----------------------------------------------------------------- */
 277
 278 /*
 279  *      This function is exported.
 280  */
 281 int
 282 v4l_compat_translate_ioctl(struct inode         *inode,
 283                            struct file          *file,
 284                            int                  cmd,
 285                            void                 *arg,
 286                            v4l2_kioctl          drv)
 287 {
 288         struct v4l2_capability  *cap2 = NULL;
 289         struct v4l2_format      *fmt2 = NULL;
 290         enum v4l2_buf_type      captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 291
 292         struct v4l2_framebuffer fbuf2;
 293         struct v4l2_input       input2;
 294         struct v4l2_tuner       tun2;
 295         struct v4l2_standard    std2;
 296         struct v4l2_frequency   freq2;
 297         struct v4l2_audio       aud2;
 298         struct v4l2_queryctrl   qctrl2;
 299         struct v4l2_buffer      buf2;
 300         v4l2_std_id             sid;
 301         int i, err = 0;
 302
 303         switch (cmd) {
 304         case VIDIOCGCAP:        /* capability */
 305         {
 306                 struct video_capability *cap = arg;
 307
 308                 cap2 = kmalloc(sizeof(*cap2),GFP_KERNEL);
 309                 memset(cap, 0, sizeof(*cap));
 310                 memset(cap2, 0, sizeof(*cap2));
 311                 memset(&fbuf2, 0, sizeof(fbuf2));
 312
 313                 err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
 314                 if (err < 0) {
 315                         dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n",err);
 316                         break;
 317                 }
 318                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
 319                         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 320                         if (err < 0) {
 321                                 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n",err);
 322                                 memset(&fbuf2, 0, sizeof(fbuf2));
 323                         }
 324                         err = 0;
 325                 }
 326
 327                 memcpy(cap->name, cap2->card,
 328                        min(sizeof(cap->name), sizeof(cap2->card)));
 329                 cap->name[sizeof(cap->name) - 1] = 0;
 330                 if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
 331                         cap->type |= VID_TYPE_CAPTURE;
 332                 if (cap2->capabilities & V4L2_CAP_TUNER)
 333                         cap->type |= VID_TYPE_TUNER;
 334                 if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
 335                         cap->type |= VID_TYPE_TELETEXT;
 336                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
 337                         cap->type |= VID_TYPE_OVERLAY;
 338                 if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
 339                         cap->type |= VID_TYPE_CLIPPING;
 340
 341                 cap->channels  = count_inputs(inode,file,drv);
 342                 check_size(inode,file,drv,
 343                            &cap->maxwidth,&cap->maxheight);
 344                 cap->audios    =  0; /* FIXME */
 345                 cap->minwidth  = 48; /* FIXME */
 346                 cap->minheight = 32; /* FIXME */
 347                 break;
 348         }
 349         case VIDIOCGFBUF: /*  get frame buffer  */
 350         {
 351                 struct video_buffer     *buffer = arg;
 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 (0 != fbuf2.fmt.bytesperline)
 382                         buffer->bytesperline = fbuf2.fmt.bytesperline;
 383                 else {
 384                         buffer->bytesperline =
 385                                 (buffer->width * buffer->depth + 7) & 7;
 386                         buffer->bytesperline >>= 3;
 387                 }
 388                 break;
 389         }
 390         case VIDIOCSFBUF: /*  set frame buffer  */
 391         {
 392                 struct video_buffer     *buffer = arg;
 393
 394                 memset(&fbuf2, 0, sizeof(fbuf2));
 395                 fbuf2.base       = buffer->base;
 396                 fbuf2.fmt.height = buffer->height;
 397                 fbuf2.fmt.width  = buffer->width;
 398                 switch (buffer->depth) {
 399                 case 8:
 400                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
 401                         break;
 402                 case 15:
 403                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
 404                         break;
 405                 case 16:
 406                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
 407                         break;
 408                 case 24:
 409                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
 410                         break;
 411                 case 32:
 412                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
 413                         break;
 414                 }
 415                 fbuf2.fmt.bytesperline = buffer->bytesperline;
 416                 err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 417                 if (err < 0)
 418                         dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n",err);
 419                 break;
 420         }
 421         case VIDIOCGWIN: /*  get window or capture dimensions  */
 422         {
 423                 struct video_window     *win = arg;
 424
 425                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 426                 memset(win,0,sizeof(*win));
 427                 memset(fmt2,0,sizeof(*fmt2));
 428
 429                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 430                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 431                 if (err < 0)
 432                         dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n",err);
 433                 if (err == 0) {
 434                         win->x         = fmt2->fmt.win.w.left;
 435                         win->y         = fmt2->fmt.win.w.top;
 436                         win->width     = fmt2->fmt.win.w.width;
 437                         win->height    = fmt2->fmt.win.w.height;
 438                         win->chromakey = fmt2->fmt.win.chromakey;
 439                         win->clips     = NULL;
 440                         win->clipcount = 0;
 441                         break;
 442                 }
 443
 444                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 445                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 446                 if (err < 0) {
 447                         dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n",err);
 448                         break;
 449                 }
 450                 win->x         = 0;
 451                 win->y         = 0;
 452                 win->width     = fmt2->fmt.pix.width;
 453                 win->height    = fmt2->fmt.pix.height;
 454                 win->chromakey = 0;
 455                 win->clips     = NULL;
 456                 win->clipcount = 0;
 457                 break;
 458         }
 459         case VIDIOCSWIN: /*  set window and/or capture dimensions  */
 460         {
 461                 struct video_window     *win = arg;
 462                 int err1,err2;
 463
 464                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 465                 memset(fmt2,0,sizeof(*fmt2));
 466                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 467                 drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type);
 468                 err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
 469                 if (err1 < 0)
 470                         dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err);
 471                 if (err1 == 0) {
 472                         fmt2->fmt.pix.width  = win->width;
 473                         fmt2->fmt.pix.height = win->height;
 474                         fmt2->fmt.pix.field  = V4L2_FIELD_ANY;
 475                         fmt2->fmt.pix.bytesperline = 0;
 476                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 477                         if (err < 0)
 478                                 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
 479                                         err);
 480                         win->width  = fmt2->fmt.pix.width;
 481                         win->height = fmt2->fmt.pix.height;
 482                 }
 483
 484                 memset(fmt2,0,sizeof(*fmt2));
 485                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 486                 fmt2->fmt.win.w.left    = win->x;
 487                 fmt2->fmt.win.w.top     = win->y;
 488                 fmt2->fmt.win.w.width   = win->width;
 489                 fmt2->fmt.win.w.height  = win->height;
 490                 fmt2->fmt.win.chromakey = win->chromakey;
 491                 fmt2->fmt.win.clips     = (void __user *)win->clips;
 492                 fmt2->fmt.win.clipcount = win->clipcount;
 493                 err2 = drv(inode, file, VIDIOC_S_FMT, fmt2);
 494                 if (err2 < 0)
 495                         dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err);
 496
 497                 if (err1 != 0 && err2 != 0)
 498                         err = err1;
 499                 break;
 500         }
 501         case VIDIOCCAPTURE: /*  turn on/off preview  */
 502         {
 503                 int *on = arg;
 504
 505                 if (0 == *on) {
 506                         /* dirty hack time.  But v4l1 has no STREAMOFF
 507                          * equivalent in the API, and this one at
 508                          * least comes close ... */
 509                         drv(inode, file, VIDIOC_STREAMOFF, &captype);
 510                 }
 511                 err = drv(inode, file, VIDIOC_OVERLAY, arg);
 512                 if (err < 0)
 513                         dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n",err);
 514                 break;
 515         }
 516         case VIDIOCGCHAN: /*  get input information  */
 517         {
 518                 struct video_channel    *chan = arg;
 519
 520                 memset(&input2,0,sizeof(input2));
 521                 input2.index = chan->channel;
 522                 err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
 523                 if (err < 0) {
 524                         dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
 525                                 "channel=%d err=%d\n",chan->channel,err);
 526                         break;
 527                 }
 528                 chan->channel = input2.index;
 529                 memcpy(chan->name, input2.name,
 530                        min(sizeof(chan->name), sizeof(input2.name)));
 531                 chan->name[sizeof(chan->name) - 1] = 0;
 532                 chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
 533                 chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
 534                 switch (input2.type) {
 535                 case V4L2_INPUT_TYPE_TUNER:
 536                         chan->type = VIDEO_TYPE_TV;
 537                         break;
 538                 default:
 539                 case V4L2_INPUT_TYPE_CAMERA:
 540                         chan->type = VIDEO_TYPE_CAMERA;
 541                         break;
 542                 }
 543                 chan->norm = 0;
 544                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 545                 if (err < 0)
 546                         dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n",err);
 547                 if (err == 0) {
 548                         if (sid & V4L2_STD_PAL)
 549                                 chan->norm = VIDEO_MODE_PAL;
 550                         if (sid & V4L2_STD_NTSC)
 551                                 chan->norm = VIDEO_MODE_NTSC;
 552                         if (sid & V4L2_STD_SECAM)
 553                                 chan->norm = VIDEO_MODE_SECAM;
 554                 }
 555                 break;
 556         }
 557         case VIDIOCSCHAN: /*  set input  */
 558         {
 559                 struct video_channel *chan = arg;
 560
 561                 sid = 0;
 562                 err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
 563                 if (err < 0)
 564                         dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n",err);
 565                 switch (chan->norm) {
 566                 case VIDEO_MODE_PAL:
 567                         sid = V4L2_STD_PAL;
 568                         break;
 569                 case VIDEO_MODE_NTSC:
 570                         sid = V4L2_STD_NTSC;
 571                         break;
 572                 case VIDEO_MODE_SECAM:
 573                         sid = V4L2_STD_SECAM;
 574                         break;
 575                 }
 576                 if (0 != sid) {
 577                         err = drv(inode, file, VIDIOC_S_STD, &sid);
 578                         if (err < 0)
 579                                 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n",err);
 580                 }
 581                 break;
 582         }
 583         case VIDIOCGPICT: /*  get tone controls & partial capture format  */
 584         {
 585                 struct video_picture    *pict = arg;
 586
 587                 pict->brightness = get_v4l_control(inode, file,
 588                                                    V4L2_CID_BRIGHTNESS,drv);
 589                 pict->hue = get_v4l_control(inode, file,
 590                                             V4L2_CID_HUE, drv);
 591                 pict->contrast = get_v4l_control(inode, file,
 592                                                  V4L2_CID_CONTRAST, drv);
 593                 pict->colour = get_v4l_control(inode, file,
 594                                                V4L2_CID_SATURATION, drv);
 595                 pict->whiteness = get_v4l_control(inode, file,
 596                                                   V4L2_CID_WHITENESS, drv);
 597
 598                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 599                 memset(fmt2,0,sizeof(*fmt2));
 600                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 601                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 602                 if (err < 0) {
 603                         dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n",err);
 604                         break;
 605                 }
 606                 pict->palette = pixelformat_to_palette(
 607                         fmt2->fmt.pix.pixelformat);
 608                 break;
 609         }
 610         case VIDIOCSPICT: /*  set tone controls & partial capture format  */
 611         {
 612                 struct video_picture    *pict = arg;
 613
 614                 set_v4l_control(inode, file,
 615                                 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
 616                 set_v4l_control(inode, file,
 617                                 V4L2_CID_HUE, pict->hue, drv);
 618                 set_v4l_control(inode, file,
 619                                 V4L2_CID_CONTRAST, pict->contrast, drv);
 620                 set_v4l_control(inode, file,
 621                                 V4L2_CID_SATURATION, pict->colour, drv);
 622                 set_v4l_control(inode, file,
 623                                 V4L2_CID_WHITENESS, pict->whiteness, drv);
 624
 625                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 626                 memset(fmt2,0,sizeof(*fmt2));
 627                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 628                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 629                 if (err < 0)
 630                         dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n",err);
 631                 if (fmt2->fmt.pix.pixelformat !=
 632                     palette_to_pixelformat(pict->palette)) {
 633                         fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
 634                                 pict->palette);
 635                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 636                         if (err < 0)
 637                                 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",err);
 638                 }
 639
 640                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 641                 if (err < 0)
 642                         dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n",err);
 643                 if (fbuf2.fmt.pixelformat !=
 644                     palette_to_pixelformat(pict->palette)) {
 645                         fbuf2.fmt.pixelformat = palette_to_pixelformat(
 646                                 pict->palette);
 647                         err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 648                         if (err < 0)
 649                                 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",err);
 650                         err = 0; /* likely fails for non-root */
 651                 }
 652                 break;
 653         }
 654         case VIDIOCGTUNER: /*  get tuner information  */
 655         {
 656                 struct video_tuner      *tun = arg;
 657
 658                 memset(&tun2,0,sizeof(tun2));
 659                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 660                 if (err < 0) {
 661                         dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n",err);
 662                         break;
 663                 }
 664                 memcpy(tun->name, tun2.name,
 665                        min(sizeof(tun->name), sizeof(tun2.name)));
 666                 tun->name[sizeof(tun->name) - 1] = 0;
 667                 tun->rangelow = tun2.rangelow;
 668                 tun->rangehigh = tun2.rangehigh;
 669                 tun->flags = 0;
 670                 tun->mode = VIDEO_MODE_AUTO;
 671
 672                 for (i = 0; i < 64; i++) {
 673                         memset(&std2,0,sizeof(std2));
 674                         std2.index = i;
 675                         if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
 676                                 break;
 677                         if (std2.id & V4L2_STD_PAL)
 678                                 tun->flags |= VIDEO_TUNER_PAL;
 679                         if (std2.id & V4L2_STD_NTSC)
 680                                 tun->flags |= VIDEO_TUNER_NTSC;
 681                         if (std2.id & V4L2_STD_SECAM)
 682                                 tun->flags |= VIDEO_TUNER_SECAM;
 683                 }
 684
 685                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 686                 if (err < 0)
 687                         dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n",err);
 688                 if (err == 0) {
 689                         if (sid & V4L2_STD_PAL)
 690                                 tun->mode = VIDEO_MODE_PAL;
 691                         if (sid & V4L2_STD_NTSC)
 692                                 tun->mode = VIDEO_MODE_NTSC;
 693                         if (sid & V4L2_STD_SECAM)
 694                                 tun->mode = VIDEO_MODE_SECAM;
 695                 }
 696
 697                 if (tun2.capability & V4L2_TUNER_CAP_LOW)
 698                         tun->flags |= VIDEO_TUNER_LOW;
 699                 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 700                         tun->flags |= VIDEO_TUNER_STEREO_ON;
 701                 tun->signal = tun2.signal;
 702                 break;
 703         }
 704         case VIDIOCSTUNER: /*  select a tuner input  */
 705         {
 706                 err = 0;
 707                 break;
 708         }
 709         case VIDIOCGFREQ: /*  get frequency  */
 710         {
 711                 int *freq = arg;
 712
 713                 freq2.tuner = 0;
 714                 err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 715                 if (err < 0)
 716                         dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n",err);
 717                 if (0 == err)
 718                         *freq = freq2.frequency;
 719                 break;
 720         }
 721         case VIDIOCSFREQ: /*  set frequency  */
 722         {
 723                 int *freq = arg;
 724
 725                 freq2.tuner = 0;
 726                 drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 727                 freq2.frequency = *freq;
 728                 err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
 729                 if (err < 0)
 730                         dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n",err);
 731                 break;
 732         }
 733         case VIDIOCGAUDIO: /*  get audio properties/controls  */
 734         {
 735                 struct video_audio      *aud = arg;
 736
 737                 err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
 738                 if (err < 0) {
 739                         dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n",err);
 740                         break;
 741                 }
 742                 memcpy(aud->name, aud2.name,
 743                        min(sizeof(aud->name), sizeof(aud2.name)));
 744                 aud->name[sizeof(aud->name) - 1] = 0;
 745                 aud->audio = aud2.index;
 746                 aud->flags = 0;
 747                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
 748                 if (i >= 0) {
 749                         aud->volume = i;
 750                         aud->flags |= VIDEO_AUDIO_VOLUME;
 751                 }
 752                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
 753                 if (i >= 0) {
 754                         aud->bass = i;
 755                         aud->flags |= VIDEO_AUDIO_BASS;
 756                 }
 757                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
 758                 if (i >= 0) {
 759                         aud->treble = i;
 760                         aud->flags |= VIDEO_AUDIO_TREBLE;
 761                 }
 762                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
 763                 if (i >= 0) {
 764                         aud->balance = i;
 765                         aud->flags |= VIDEO_AUDIO_BALANCE;
 766                 }
 767                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
 768                 if (i >= 0) {
 769                         if (i)
 770                                 aud->flags |= VIDEO_AUDIO_MUTE;
 771                         aud->flags |= VIDEO_AUDIO_MUTABLE;
 772                 }
 773                 aud->step = 1;
 774                 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
 775                 if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
 776                     !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
 777                         aud->step = qctrl2.step;
 778                 aud->mode = 0;
 779
 780                 memset(&tun2,0,sizeof(tun2));
 781                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 782                 if (err < 0) {
 783                         dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n",err);
 784                         err = 0;
 785                         break;
 786                 }
 787
 788                 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
 789                         aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
 790                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 791                         aud->mode = VIDEO_SOUND_STEREO;
 792                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
 793                         aud->mode = VIDEO_SOUND_MONO;
 794                 break;
 795         }
 796         case VIDIOCSAUDIO: /*  set audio controls  */
 797         {
 798                 struct video_audio      *aud = arg;
 799
 800                 memset(&aud2,0,sizeof(aud2));
 801                 memset(&tun2,0,sizeof(tun2));
 802
 803                 aud2.index = aud->audio;
 804                 err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
 805                 if (err < 0) {
 806                         dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n",err);
 807                         break;
 808                 }
 809
 810                 set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
 811                                 aud->volume, drv);
 812                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
 813                                 aud->bass, drv);
 814                 set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
 815                                 aud->treble, drv);
 816                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
 817                                 aud->balance, drv);
 818                 set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
 819                                 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
 820
 821                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 822                 if (err < 0)
 823                         dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n",err);
 824                 if (err == 0) {
 825                         switch (aud->mode) {
 826                         default:
 827                         case VIDEO_SOUND_MONO:
 828                         case VIDEO_SOUND_LANG1:
 829                                 tun2.audmode = V4L2_TUNER_MODE_MONO;
 830                                 break;
 831                         case VIDEO_SOUND_STEREO:
 832                                 tun2.audmode = V4L2_TUNER_MODE_STEREO;
 833                                 break;
 834                         case VIDEO_SOUND_LANG2:
 835                                 tun2.audmode = V4L2_TUNER_MODE_LANG2;
 836                                 break;
 837                         }
 838                         err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
 839                         if (err < 0)
 840                                 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n",err);
 841                 }
 842                 err = 0;
 843                 break;
 844         }
 845         case VIDIOCMCAPTURE: /*  capture a frame  */
 846         {
 847                 struct video_mmap       *mm = arg;
 848
 849                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 850                 memset(&buf2,0,sizeof(buf2));
 851                 memset(fmt2,0,sizeof(*fmt2));
 852
 853                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 854                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 855                 if (err < 0) {
 856                         dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n",err);
 857                         break;
 858                 }
 859                 if (mm->width   != fmt2->fmt.pix.width  ||
 860                     mm->height  != fmt2->fmt.pix.height ||
 861                     palette_to_pixelformat(mm->format) !=
 862                     fmt2->fmt.pix.pixelformat)
 863                 {/* New capture format...  */
 864                         fmt2->fmt.pix.width = mm->width;
 865                         fmt2->fmt.pix.height = mm->height;
 866                         fmt2->fmt.pix.pixelformat =
 867                                 palette_to_pixelformat(mm->format);
 868                         fmt2->fmt.pix.field = V4L2_FIELD_ANY;
 869                         fmt2->fmt.pix.bytesperline = 0;
 870                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 871                         if (err < 0) {
 872                                 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err);
 873                                 break;
 874                         }
 875                 }
 876                 buf2.index = mm->frame;
 877                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 878                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 879                 if (err < 0) {
 880                         dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n",err);
 881                         break;
 882                 }
 883                 err = drv(inode, file, VIDIOC_QBUF, &buf2);
 884                 if (err < 0) {
 885                         dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n",err);
 886                         break;
 887                 }
 888                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 889                 if (err < 0)
 890                         dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err);
 891                 break;
 892         }
 893         case VIDIOCSYNC: /*  wait for a frame  */
 894         {
 895                 int                     *i = arg;
 896
 897                 buf2.index = *i;
 898                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 899                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 900                 if (err < 0) {
 901                         /*  No such buffer */
 902                         dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
 903                         break;
 904                 }
 905                 if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) {
 906                         /* Buffer is not mapped  */
 907                         err = -EINVAL;
 908                         break;
 909                 }
 910
 911                 /* make sure capture actually runs so we don't block forever */
 912                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 913                 if (err < 0) {
 914                         dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n",err);
 915                         break;
 916                 }
 917
 918                 /*  Loop as long as the buffer is queued, but not done  */
 919                 while ((buf2.flags &
 920                         (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
 921                        == V4L2_BUF_FLAG_QUEUED)
 922                 {
 923                         err = poll_one(file);
 924                         if (err < 0 ||  /* error or sleep was interrupted  */
 925                             err == 0)   /* timeout? Shouldn't occur.  */
 926                                 break;
 927                         err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 928                         if (err < 0)
 929                                 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
 930                 }
 931                 if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */
 932                         break;
 933                 do {
 934                         err = drv(inode, file, VIDIOC_DQBUF, &buf2);
 935                         if (err < 0)
 936                                 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n",err);
 937                 } while (err == 0 && buf2.index != *i);
 938                 break;
 939         }
 940
 941         case VIDIOCGVBIFMT: /* query VBI data capture format */
 942         {
 943                 struct vbi_format      *fmt = arg;
 944
 945                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 946                 memset(fmt2, 0, sizeof(*fmt2));
 947                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 948
 949                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 950                 if (err < 0) {
 951                         dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
 952                         break;
 953                 }
 954                 memset(fmt, 0, sizeof(*fmt));
 955                 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
 956                 fmt->sampling_rate    = fmt2->fmt.vbi.sampling_rate;
 957                 fmt->sample_format    = VIDEO_PALETTE_RAW;
 958                 fmt->start[0]         = fmt2->fmt.vbi.start[0];
 959                 fmt->count[0]         = fmt2->fmt.vbi.count[0];
 960                 fmt->start[1]         = fmt2->fmt.vbi.start[1];
 961                 fmt->count[1]         = fmt2->fmt.vbi.count[1];
 962                 fmt->flags            = fmt2->fmt.vbi.flags & 0x03;
 963                 break;
 964         }
 965         case VIDIOCSVBIFMT:
 966         {
 967                 struct vbi_format      *fmt = arg;
 968
 969                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 970                 memset(fmt2, 0, sizeof(*fmt2));
 971
 972                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 973                 fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
 974                 fmt2->fmt.vbi.sampling_rate    = fmt->sampling_rate;
 975                 fmt2->fmt.vbi.sample_format    = V4L2_PIX_FMT_GREY;
 976                 fmt2->fmt.vbi.start[0]         = fmt->start[0];
 977                 fmt2->fmt.vbi.count[0]         = fmt->count[0];
 978                 fmt2->fmt.vbi.start[1]         = fmt->start[1];
 979                 fmt2->fmt.vbi.count[1]         = fmt->count[1];
 980                 fmt2->fmt.vbi.flags            = fmt->flags;
 981                 err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
 982                 if (err < 0) {
 983                         dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
 984                         break;
 985                 }
 986
 987                 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
 988                     fmt2->fmt.vbi.sampling_rate    != fmt->sampling_rate    ||
 989                     VIDEO_PALETTE_RAW              != fmt->sample_format    ||
 990                     fmt2->fmt.vbi.start[0]         != fmt->start[0]         ||
 991                     fmt2->fmt.vbi.count[0]         != fmt->count[0]         ||
 992                     fmt2->fmt.vbi.start[1]         != fmt->start[1]         ||
 993                     fmt2->fmt.vbi.count[1]         != fmt->count[1]         ||
 994                     fmt2->fmt.vbi.flags            != fmt->flags) {
 995                         err = -EINVAL;
 996                         break;
 997                 }
 998                 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 999                 if (err < 0)
1000                         dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1001                 break;
1002         }
1003
1004         default:
1005                 err = -ENOIOCTLCMD;
1006                 break;
1007         }
1008
1009         if (cap2)
1010                 kfree(cap2);
1011         if (fmt2)
1012                 kfree(fmt2);
1013         return err;
1014 }
1015
1016 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1017
1018 /*
1019  * Local variables:
1020  * c-basic-offset: 8
1021  * End:
1022  */