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