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