drivers/media/video/v4l1-compat.c

   1 /*
   2  * $Id: v4l1-compat.c,v 1.9 2005/06/12 04:19:19 mchehab Exp $
   3  *
   4  *      Video for Linux Two
   5  *      Backward Compatibility Layer
   6  *
   7  *      Support subroutines for providing V4L2 drivers with backward
   8  *      compatibility with applications using the old API.
   9  *
  10  *      This program is free software; you can redistribute it and/or
  11  *      modify it under the terms of the GNU General Public License
  12  *      as published by the Free Software Foundation; either version
  13  *      2 of the License, or (at your option) any later version.
  14  *
  15  * Author:      Bill Dirks <bdirks@pacbell.net>
  16  *              et al.
  17  *
  18  */
  19
  20 #include <linux/config.h>
  21
  22 #include <linux/init.h>
  23 #include <linux/module.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/types.h>
  26 #include <linux/kernel.h>
  27 #include <linux/sched.h>
  28 #include <linux/smp_lock.h>
  29 #include <linux/mm.h>
  30 #include <linux/fs.h>
  31 #include <linux/file.h>
  32 #include <linux/string.h>
  33 #include <linux/errno.h>
  34 #include <linux/slab.h>
  35 #include <linux/videodev.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 = kmalloc(sizeof(*cap2),GFP_KERNEL);
 310                 memset(cap, 0, sizeof(*cap));
 311                 memset(cap2, 0, sizeof(*cap2));
 312                 memset(&fbuf2, 0, sizeof(fbuf2));
 313
 314                 err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
 315                 if (err < 0) {
 316                         dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n",err);
 317                         break;
 318                 }
 319                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
 320                         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 321                         if (err < 0) {
 322                                 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n",err);
 323                                 memset(&fbuf2, 0, sizeof(fbuf2));
 324                         }
 325                         err = 0;
 326                 }
 327
 328                 memcpy(cap->name, cap2->card,
 329                        min(sizeof(cap->name), sizeof(cap2->card)));
 330                 cap->name[sizeof(cap->name) - 1] = 0;
 331                 if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
 332                         cap->type |= VID_TYPE_CAPTURE;
 333                 if (cap2->capabilities & V4L2_CAP_TUNER)
 334                         cap->type |= VID_TYPE_TUNER;
 335                 if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
 336                         cap->type |= VID_TYPE_TELETEXT;
 337                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
 338                         cap->type |= VID_TYPE_OVERLAY;
 339                 if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
 340                         cap->type |= VID_TYPE_CLIPPING;
 341
 342                 cap->channels  = count_inputs(inode,file,drv);
 343                 check_size(inode,file,drv,
 344                            &cap->maxwidth,&cap->maxheight);
 345                 cap->audios    =  0; /* FIXME */
 346                 cap->minwidth  = 48; /* FIXME */
 347                 cap->minheight = 32; /* FIXME */
 348                 break;
 349         }
 350         case VIDIOCGFBUF: /*  get frame buffer  */
 351         {
 352                 struct video_buffer     *buffer = arg;
 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 (0 != fbuf2.fmt.bytesperline)
 383                         buffer->bytesperline = fbuf2.fmt.bytesperline;
 384                 else {
 385                         buffer->bytesperline =
 386                                 (buffer->width * buffer->depth + 7) & 7;
 387                         buffer->bytesperline >>= 3;
 388                 }
 389                 break;
 390         }
 391         case VIDIOCSFBUF: /*  set frame buffer  */
 392         {
 393                 struct video_buffer     *buffer = arg;
 394
 395                 memset(&fbuf2, 0, sizeof(fbuf2));
 396                 fbuf2.base       = buffer->base;
 397                 fbuf2.fmt.height = buffer->height;
 398                 fbuf2.fmt.width  = buffer->width;
 399                 switch (buffer->depth) {
 400                 case 8:
 401                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
 402                         break;
 403                 case 15:
 404                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
 405                         break;
 406                 case 16:
 407                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
 408                         break;
 409                 case 24:
 410                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
 411                         break;
 412                 case 32:
 413                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
 414                         break;
 415                 }
 416                 fbuf2.fmt.bytesperline = buffer->bytesperline;
 417                 err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 418                 if (err < 0)
 419                         dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n",err);
 420                 break;
 421         }
 422         case VIDIOCGWIN: /*  get window or capture dimensions  */
 423         {
 424                 struct video_window     *win = arg;
 425
 426                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 427                 memset(win,0,sizeof(*win));
 428                 memset(fmt2,0,sizeof(*fmt2));
 429
 430                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 431                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 432                 if (err < 0)
 433                         dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n",err);
 434                 if (err == 0) {
 435                         win->x         = fmt2->fmt.win.w.left;
 436                         win->y         = fmt2->fmt.win.w.top;
 437                         win->width     = fmt2->fmt.win.w.width;
 438                         win->height    = fmt2->fmt.win.w.height;
 439                         win->chromakey = fmt2->fmt.win.chromakey;
 440                         win->clips     = NULL;
 441                         win->clipcount = 0;
 442                         break;
 443                 }
 444
 445                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 446                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 447                 if (err < 0) {
 448                         dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n",err);
 449                         break;
 450                 }
 451                 win->x         = 0;
 452                 win->y         = 0;
 453                 win->width     = fmt2->fmt.pix.width;
 454                 win->height    = fmt2->fmt.pix.height;
 455                 win->chromakey = 0;
 456                 win->clips     = NULL;
 457                 win->clipcount = 0;
 458                 break;
 459         }
 460         case VIDIOCSWIN: /*  set window and/or capture dimensions  */
 461         {
 462                 struct video_window     *win = arg;
 463                 int err1,err2;
 464
 465                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 466                 memset(fmt2,0,sizeof(*fmt2));
 467                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 468                 drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type);
 469                 err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
 470                 if (err1 < 0)
 471                         dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err);
 472                 if (err1 == 0) {
 473                         fmt2->fmt.pix.width  = win->width;
 474                         fmt2->fmt.pix.height = win->height;
 475                         fmt2->fmt.pix.field  = V4L2_FIELD_ANY;
 476                         fmt2->fmt.pix.bytesperline = 0;
 477                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 478                         if (err < 0)
 479                                 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
 480                                         err);
 481                         win->width  = fmt2->fmt.pix.width;
 482                         win->height = fmt2->fmt.pix.height;
 483                 }
 484
 485                 memset(fmt2,0,sizeof(*fmt2));
 486                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 487                 fmt2->fmt.win.w.left    = win->x;
 488                 fmt2->fmt.win.w.top     = win->y;
 489                 fmt2->fmt.win.w.width   = win->width;
 490                 fmt2->fmt.win.w.height  = win->height;
 491                 fmt2->fmt.win.chromakey = win->chromakey;
 492                 fmt2->fmt.win.clips     = (void __user *)win->clips;
 493                 fmt2->fmt.win.clipcount = win->clipcount;
 494                 err2 = drv(inode, file, VIDIOC_S_FMT, fmt2);
 495                 if (err2 < 0)
 496                         dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err);
 497
 498                 if (err1 != 0 && err2 != 0)
 499                         err = err1;
 500                 break;
 501         }
 502         case VIDIOCCAPTURE: /*  turn on/off preview  */
 503         {
 504                 int *on = arg;
 505
 506                 if (0 == *on) {
 507                         /* dirty hack time.  But v4l1 has no STREAMOFF
 508                          * equivalent in the API, and this one at
 509                          * least comes close ... */
 510                         drv(inode, file, VIDIOC_STREAMOFF, &captype);
 511                 }
 512                 err = drv(inode, file, VIDIOC_OVERLAY, arg);
 513                 if (err < 0)
 514                         dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n",err);
 515                 break;
 516         }
 517         case VIDIOCGCHAN: /*  get input information  */
 518         {
 519                 struct video_channel    *chan = arg;
 520
 521                 memset(&input2,0,sizeof(input2));
 522                 input2.index = chan->channel;
 523                 err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
 524                 if (err < 0) {
 525                         dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
 526                                 "channel=%d err=%d\n",chan->channel,err);
 527                         break;
 528                 }
 529                 chan->channel = input2.index;
 530                 memcpy(chan->name, input2.name,
 531                        min(sizeof(chan->name), sizeof(input2.name)));
 532                 chan->name[sizeof(chan->name) - 1] = 0;
 533                 chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
 534                 chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
 535                 switch (input2.type) {
 536                 case V4L2_INPUT_TYPE_TUNER:
 537                         chan->type = VIDEO_TYPE_TV;
 538                         break;
 539                 default:
 540                 case V4L2_INPUT_TYPE_CAMERA:
 541                         chan->type = VIDEO_TYPE_CAMERA;
 542                         break;
 543                 }
 544                 chan->norm = 0;
 545                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 546                 if (err < 0)
 547                         dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n",err);
 548                 if (err == 0) {
 549                         if (sid & V4L2_STD_PAL)
 550                                 chan->norm = VIDEO_MODE_PAL;
 551                         if (sid & V4L2_STD_NTSC)
 552                                 chan->norm = VIDEO_MODE_NTSC;
 553                         if (sid & V4L2_STD_SECAM)
 554                                 chan->norm = VIDEO_MODE_SECAM;
 555                 }
 556                 break;
 557         }
 558         case VIDIOCSCHAN: /*  set input  */
 559         {
 560                 struct video_channel *chan = arg;
 561
 562                 sid = 0;
 563                 err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
 564                 if (err < 0)
 565                         dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n",err);
 566                 switch (chan->norm) {
 567                 case VIDEO_MODE_PAL:
 568                         sid = V4L2_STD_PAL;
 569                         break;
 570                 case VIDEO_MODE_NTSC:
 571                         sid = V4L2_STD_NTSC;
 572                         break;
 573                 case VIDEO_MODE_SECAM:
 574                         sid = V4L2_STD_SECAM;
 575                         break;
 576                 }
 577                 if (0 != sid) {
 578                         err = drv(inode, file, VIDIOC_S_STD, &sid);
 579                         if (err < 0)
 580                                 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n",err);
 581                 }
 582                 break;
 583         }
 584         case VIDIOCGPICT: /*  get tone controls & partial capture format  */
 585         {
 586                 struct video_picture    *pict = arg;
 587
 588                 pict->brightness = get_v4l_control(inode, file,
 589                                                    V4L2_CID_BRIGHTNESS,drv);
 590                 pict->hue = get_v4l_control(inode, file,
 591                                             V4L2_CID_HUE, drv);
 592                 pict->contrast = get_v4l_control(inode, file,
 593                                                  V4L2_CID_CONTRAST, drv);
 594                 pict->colour = get_v4l_control(inode, file,
 595                                                V4L2_CID_SATURATION, drv);
 596                 pict->whiteness = get_v4l_control(inode, file,
 597                                                   V4L2_CID_WHITENESS, drv);
 598
 599                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 600                 memset(fmt2,0,sizeof(*fmt2));
 601                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 602                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 603                 if (err < 0) {
 604                         dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n",err);
 605                         break;
 606                 }
 607 #if 0 /* FIXME */
 608                 pict->depth   = fmt2->fmt.pix.depth;
 609 #endif
 610                 pict->palette = pixelformat_to_palette(
 611                         fmt2->fmt.pix.pixelformat);
 612                 break;
 613         }
 614         case VIDIOCSPICT: /*  set tone controls & partial capture format  */
 615         {
 616                 struct video_picture    *pict = arg;
 617
 618                 set_v4l_control(inode, file,
 619                                 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
 620                 set_v4l_control(inode, file,
 621                                 V4L2_CID_HUE, pict->hue, drv);
 622                 set_v4l_control(inode, file,
 623                                 V4L2_CID_CONTRAST, pict->contrast, drv);
 624                 set_v4l_control(inode, file,
 625                                 V4L2_CID_SATURATION, pict->colour, drv);
 626                 set_v4l_control(inode, file,
 627                                 V4L2_CID_WHITENESS, pict->whiteness, drv);
 628
 629                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 630                 memset(fmt2,0,sizeof(*fmt2));
 631                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 632                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 633                 if (err < 0)
 634                         dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n",err);
 635                 if (fmt2->fmt.pix.pixelformat !=
 636                     palette_to_pixelformat(pict->palette)) {
 637                         fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
 638                                 pict->palette);
 639                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 640                         if (err < 0)
 641                                 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",err);
 642                 }
 643
 644                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 645                 if (err < 0)
 646                         dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n",err);
 647                 if (fbuf2.fmt.pixelformat !=
 648                     palette_to_pixelformat(pict->palette)) {
 649                         fbuf2.fmt.pixelformat = palette_to_pixelformat(
 650                                 pict->palette);
 651                         err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 652                         if (err < 0)
 653                                 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",err);
 654                         err = 0; /* likely fails for non-root */
 655                 }
 656                 break;
 657         }
 658         case VIDIOCGTUNER: /*  get tuner information  */
 659         {
 660                 struct video_tuner      *tun = arg;
 661
 662                 memset(&tun2,0,sizeof(tun2));
 663                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 664                 if (err < 0) {
 665                         dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n",err);
 666                         break;
 667                 }
 668                 memcpy(tun->name, tun2.name,
 669                        min(sizeof(tun->name), sizeof(tun2.name)));
 670                 tun->name[sizeof(tun->name) - 1] = 0;
 671                 tun->rangelow = tun2.rangelow;
 672                 tun->rangehigh = tun2.rangehigh;
 673                 tun->flags = 0;
 674                 tun->mode = VIDEO_MODE_AUTO;
 675
 676                 for (i = 0; i < 64; i++) {
 677                         memset(&std2,0,sizeof(std2));
 678                         std2.index = i;
 679                         if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
 680                                 break;
 681                         if (std2.id & V4L2_STD_PAL)
 682                                 tun->flags |= VIDEO_TUNER_PAL;
 683                         if (std2.id & V4L2_STD_NTSC)
 684                                 tun->flags |= VIDEO_TUNER_NTSC;
 685                         if (std2.id & V4L2_STD_SECAM)
 686                                 tun->flags |= VIDEO_TUNER_SECAM;
 687                 }
 688
 689                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 690                 if (err < 0)
 691                         dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n",err);
 692                 if (err == 0) {
 693                         if (sid & V4L2_STD_PAL)
 694                                 tun->mode = VIDEO_MODE_PAL;
 695                         if (sid & V4L2_STD_NTSC)
 696                                 tun->mode = VIDEO_MODE_NTSC;
 697                         if (sid & V4L2_STD_SECAM)
 698                                 tun->mode = VIDEO_MODE_SECAM;
 699                 }
 700
 701                 if (tun2.capability & V4L2_TUNER_CAP_LOW)
 702                         tun->flags |= VIDEO_TUNER_LOW;
 703                 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 704                         tun->flags |= VIDEO_TUNER_STEREO_ON;
 705                 tun->signal = tun2.signal;
 706                 break;
 707         }
 708         case VIDIOCSTUNER: /*  select a tuner input  */
 709         {
 710 #if 0 /* FIXME */
 711                 err = drv(inode, file, VIDIOC_S_INPUT, &i);
 712                 if (err < 0)
 713                         dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n",err);
 714 #else
 715                 err = 0;
 716 #endif
 717                 break;
 718         }
 719         case VIDIOCGFREQ: /*  get frequency  */
 720         {
 721                 int *freq = arg;
 722
 723                 freq2.tuner = 0;
 724                 err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 725                 if (err < 0)
 726                         dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n",err);
 727                 if (0 == err)
 728                         *freq = freq2.frequency;
 729                 break;
 730         }
 731         case VIDIOCSFREQ: /*  set frequency  */
 732         {
 733                 int *freq = arg;
 734
 735                 freq2.tuner = 0;
 736                 drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 737                 freq2.frequency = *freq;
 738                 err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
 739                 if (err < 0)
 740                         dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n",err);
 741                 break;
 742         }
 743         case VIDIOCGAUDIO: /*  get audio properties/controls  */
 744         {
 745                 struct video_audio      *aud = arg;
 746
 747                 err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
 748                 if (err < 0) {
 749                         dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n",err);
 750                         break;
 751                 }
 752                 memcpy(aud->name, aud2.name,
 753                        min(sizeof(aud->name), sizeof(aud2.name)));
 754                 aud->name[sizeof(aud->name) - 1] = 0;
 755                 aud->audio = aud2.index;
 756                 aud->flags = 0;
 757                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
 758                 if (i >= 0) {
 759                         aud->volume = i;
 760                         aud->flags |= VIDEO_AUDIO_VOLUME;
 761                 }
 762                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
 763                 if (i >= 0) {
 764                         aud->bass = i;
 765                         aud->flags |= VIDEO_AUDIO_BASS;
 766                 }
 767                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
 768                 if (i >= 0) {
 769                         aud->treble = i;
 770                         aud->flags |= VIDEO_AUDIO_TREBLE;
 771                 }
 772                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
 773                 if (i >= 0) {
 774                         aud->balance = i;
 775                         aud->flags |= VIDEO_AUDIO_BALANCE;
 776                 }
 777                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
 778                 if (i >= 0) {
 779                         if (i)
 780                                 aud->flags |= VIDEO_AUDIO_MUTE;
 781                         aud->flags |= VIDEO_AUDIO_MUTABLE;
 782                 }
 783                 aud->step = 1;
 784                 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
 785                 if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
 786                     !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
 787                         aud->step = qctrl2.step;
 788                 aud->mode = 0;
 789
 790                 memset(&tun2,0,sizeof(tun2));
 791                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 792                 if (err < 0) {
 793                         dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n",err);
 794                         err = 0;
 795                         break;
 796                 }
 797
 798                 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
 799                         aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
 800                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 801                         aud->mode = VIDEO_SOUND_STEREO;
 802                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
 803                         aud->mode = VIDEO_SOUND_MONO;
 804                 break;
 805         }
 806         case VIDIOCSAUDIO: /*  set audio controls  */
 807         {
 808                 struct video_audio      *aud = arg;
 809
 810                 memset(&aud2,0,sizeof(aud2));
 811                 memset(&tun2,0,sizeof(tun2));
 812
 813                 aud2.index = aud->audio;
 814                 err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
 815                 if (err < 0) {
 816                         dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n",err);
 817                         break;
 818                 }
 819
 820                 set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
 821                                 aud->volume, drv);
 822                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
 823                                 aud->bass, drv);
 824                 set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
 825                                 aud->treble, drv);
 826                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
 827                                 aud->balance, drv);
 828                 set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
 829                                 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
 830
 831                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 832                 if (err < 0)
 833                         dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n",err);
 834                 if (err == 0) {
 835                         switch (aud->mode) {
 836                         default:
 837                         case VIDEO_SOUND_MONO:
 838                         case VIDEO_SOUND_LANG1:
 839                                 tun2.audmode = V4L2_TUNER_MODE_MONO;
 840                                 break;
 841                         case VIDEO_SOUND_STEREO:
 842                                 tun2.audmode = V4L2_TUNER_MODE_STEREO;
 843                                 break;
 844                         case VIDEO_SOUND_LANG2:
 845                                 tun2.audmode = V4L2_TUNER_MODE_LANG2;
 846                                 break;
 847                         }
 848                         err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
 849                         if (err < 0)
 850                                 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n",err);
 851                 }
 852                 err = 0;
 853                 break;
 854         }
 855 #if 0
 856         case VIDIOCGMBUF:
 857                 /* v4l2 drivers must implement that themself.  The
 858                    mmap() differences can't be translated fully
 859                    transparent, thus there is no point to try that */
 860 #endif
 861         case VIDIOCMCAPTURE: /*  capture a frame  */
 862         {
 863                 struct video_mmap       *mm = arg;
 864
 865                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 866                 memset(&buf2,0,sizeof(buf2));
 867                 memset(fmt2,0,sizeof(*fmt2));
 868
 869                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 870                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 871                 if (err < 0) {
 872                         dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n",err);
 873                         break;
 874                 }
 875                 if (mm->width   != fmt2->fmt.pix.width  ||
 876                     mm->height  != fmt2->fmt.pix.height ||
 877                     palette_to_pixelformat(mm->format) !=
 878                     fmt2->fmt.pix.pixelformat)
 879                 {/* New capture format...  */
 880                         fmt2->fmt.pix.width = mm->width;
 881                         fmt2->fmt.pix.height = mm->height;
 882                         fmt2->fmt.pix.pixelformat =
 883                                 palette_to_pixelformat(mm->format);
 884                         fmt2->fmt.pix.field = V4L2_FIELD_ANY;
 885                         fmt2->fmt.pix.bytesperline = 0;
 886                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 887                         if (err < 0) {
 888                                 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err);
 889                                 break;
 890                         }
 891                 }
 892                 buf2.index = mm->frame;
 893                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 894                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 895                 if (err < 0) {
 896                         dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n",err);
 897                         break;
 898                 }
 899                 err = drv(inode, file, VIDIOC_QBUF, &buf2);
 900                 if (err < 0) {
 901                         dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n",err);
 902                         break;
 903                 }
 904                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 905                 if (err < 0)
 906                         dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err);
 907                 break;
 908         }
 909         case VIDIOCSYNC: /*  wait for a frame  */
 910         {
 911                 int                     *i = arg;
 912
 913                 buf2.index = *i;
 914                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 915                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 916                 if (err < 0) {
 917                         /*  No such buffer */
 918                         dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
 919                         break;
 920                 }
 921                 if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) {
 922                         /* Buffer is not mapped  */
 923                         err = -EINVAL;
 924                         break;
 925                 }
 926
 927                 /* make sure capture actually runs so we don't block forever */
 928                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 929                 if (err < 0) {
 930                         dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n",err);
 931                         break;
 932                 }
 933
 934                 /*  Loop as long as the buffer is queued, but not done  */
 935                 while ((buf2.flags &
 936                         (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
 937                        == V4L2_BUF_FLAG_QUEUED)
 938                 {
 939                         err = poll_one(file);
 940                         if (err < 0 ||  /* error or sleep was interrupted  */
 941                             err == 0)   /* timeout? Shouldn't occur.  */
 942                                 break;
 943                         err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 944                         if (err < 0)
 945                                 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
 946                 }
 947                 if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */
 948                         break;
 949                 do {
 950                         err = drv(inode, file, VIDIOC_DQBUF, &buf2);
 951                         if (err < 0)
 952                                 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n",err);
 953                 } while (err == 0 && buf2.index != *i);
 954                 break;
 955         }
 956
 957         case VIDIOCGVBIFMT: /* query VBI data capture format */
 958         {
 959                 struct vbi_format      *fmt = arg;
 960
 961                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 962                 memset(fmt2, 0, sizeof(*fmt2));
 963                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 964
 965                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 966                 if (err < 0) {
 967                         dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
 968                         break;
 969                 }
 970                 memset(fmt, 0, sizeof(*fmt));
 971                 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
 972                 fmt->sampling_rate    = fmt2->fmt.vbi.sampling_rate;
 973                 fmt->sample_format    = VIDEO_PALETTE_RAW;
 974                 fmt->start[0]         = fmt2->fmt.vbi.start[0];
 975                 fmt->count[0]         = fmt2->fmt.vbi.count[0];
 976                 fmt->start[1]         = fmt2->fmt.vbi.start[1];
 977                 fmt->count[1]         = fmt2->fmt.vbi.count[1];
 978                 fmt->flags            = fmt2->fmt.vbi.flags & 0x03;
 979                 break;
 980         }
 981         case VIDIOCSVBIFMT:
 982         {
 983                 struct vbi_format      *fmt = arg;
 984
 985                 fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
 986                 memset(fmt2, 0, sizeof(*fmt2));
 987
 988                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 989                 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 = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
 998                 if (err < 0) {
 999                         dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
1000                         break;
1001                 }
1002
1003                 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1004                     fmt2->fmt.vbi.sampling_rate    != fmt->sampling_rate    ||
1005                     VIDEO_PALETTE_RAW              != fmt->sample_format    ||
1006                     fmt2->fmt.vbi.start[0]         != fmt->start[0]         ||
1007                     fmt2->fmt.vbi.count[0]         != fmt->count[0]         ||
1008                     fmt2->fmt.vbi.start[1]         != fmt->start[1]         ||
1009                     fmt2->fmt.vbi.count[1]         != fmt->count[1]         ||
1010                     fmt2->fmt.vbi.flags            != fmt->flags) {
1011                         err = -EINVAL;
1012                         break;
1013                 }
1014                 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
1015                 if (err < 0)
1016                         dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1017                 break;
1018         }
1019
1020         default:
1021                 err = -ENOIOCTLCMD;
1022                 break;
1023         }
1024
1025         if (cap2)
1026                 kfree(cap2);
1027         if (fmt2)
1028                 kfree(fmt2);
1029         return err;
1030 }
1031
1032 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1033
1034 /*
1035  * Local variables:
1036  * c-basic-offset: 8
1037  * End:
1038  */