drivers/media/platform/vivid/vivid-vid-common.c

   1 /*
   2  * vivid-vid-common.c - common video support functions.
   3  *
   4  * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   5  *
   6  * This program is free software; you may redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  11  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  12  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  13  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  14  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  15  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  16  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  17  * SOFTWARE.
  18  */
  19
  20 #include <linux/errno.h>
  21 #include <linux/kernel.h>
  22 #include <linux/sched.h>
  23 #include <linux/videodev2.h>
  24 #include <linux/v4l2-dv-timings.h>
  25 #include <media/v4l2-common.h>
  26 #include <media/v4l2-event.h>
  27 #include <media/v4l2-dv-timings.h>
  28
  29 #include "vivid-core.h"
  30 #include "vivid-vid-common.h"
  31
  32 const struct v4l2_dv_timings_cap vivid_dv_timings_cap = {
  33         .type = V4L2_DV_BT_656_1120,
  34         /* keep this initialization for compatibility with GCC < 4.4.6 */
  35         .reserved = { 0 },
  36         V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 14000000, 775000000,
  37                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
  38                 V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF,
  39                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
  40 };
  41
  42 /* ------------------------------------------------------------------
  43         Basic structures
  44    ------------------------------------------------------------------*/
  45
  46 struct vivid_fmt vivid_formats[] = {
  47         {
  48                 .fourcc   = V4L2_PIX_FMT_YUYV,
  49                 .vdownsampling = { 1 },
  50                 .bit_depth = { 16 },
  51                 .is_yuv   = true,
  52                 .planes   = 1,
  53                 .buffers = 1,
  54                 .data_offset = { PLANE0_DATA_OFFSET },
  55         },
  56         {
  57                 .fourcc   = V4L2_PIX_FMT_UYVY,
  58                 .vdownsampling = { 1 },
  59                 .bit_depth = { 16 },
  60                 .is_yuv   = true,
  61                 .planes   = 1,
  62                 .buffers = 1,
  63         },
  64         {
  65                 .fourcc   = V4L2_PIX_FMT_YVYU,
  66                 .vdownsampling = { 1 },
  67                 .bit_depth = { 16 },
  68                 .is_yuv   = true,
  69                 .planes   = 1,
  70                 .buffers = 1,
  71         },
  72         {
  73                 .fourcc   = V4L2_PIX_FMT_VYUY,
  74                 .vdownsampling = { 1 },
  75                 .bit_depth = { 16 },
  76                 .is_yuv   = true,
  77                 .planes   = 1,
  78                 .buffers = 1,
  79         },
  80         {
  81                 .fourcc   = V4L2_PIX_FMT_YUV422P,
  82                 .vdownsampling = { 1, 1, 1 },
  83                 .bit_depth = { 8, 4, 4 },
  84                 .is_yuv   = true,
  85                 .planes   = 3,
  86                 .buffers = 1,
  87         },
  88         {
  89                 .fourcc   = V4L2_PIX_FMT_YUV420,
  90                 .vdownsampling = { 1, 2, 2 },
  91                 .bit_depth = { 8, 4, 4 },
  92                 .is_yuv   = true,
  93                 .planes   = 3,
  94                 .buffers = 1,
  95         },
  96         {
  97                 .fourcc   = V4L2_PIX_FMT_YVU420,
  98                 .vdownsampling = { 1, 2, 2 },
  99                 .bit_depth = { 8, 4, 4 },
 100                 .is_yuv   = true,
 101                 .planes   = 3,
 102                 .buffers = 1,
 103         },
 104         {
 105                 .fourcc   = V4L2_PIX_FMT_NV12,
 106                 .vdownsampling = { 1, 2 },
 107                 .bit_depth = { 8, 8 },
 108                 .is_yuv   = true,
 109                 .planes   = 2,
 110                 .buffers = 1,
 111         },
 112         {
 113                 .fourcc   = V4L2_PIX_FMT_NV21,
 114                 .vdownsampling = { 1, 2 },
 115                 .bit_depth = { 8, 8 },
 116                 .is_yuv   = true,
 117                 .planes   = 2,
 118                 .buffers = 1,
 119         },
 120         {
 121                 .fourcc   = V4L2_PIX_FMT_NV16,
 122                 .vdownsampling = { 1, 1 },
 123                 .bit_depth = { 8, 8 },
 124                 .is_yuv   = true,
 125                 .planes   = 2,
 126                 .buffers = 1,
 127         },
 128         {
 129                 .fourcc   = V4L2_PIX_FMT_NV61,
 130                 .vdownsampling = { 1, 1 },
 131                 .bit_depth = { 8, 8 },
 132                 .is_yuv   = true,
 133                 .planes   = 2,
 134                 .buffers = 1,
 135         },
 136         {
 137                 .fourcc   = V4L2_PIX_FMT_NV24,
 138                 .vdownsampling = { 1, 1 },
 139                 .bit_depth = { 8, 16 },
 140                 .is_yuv   = true,
 141                 .planes   = 2,
 142                 .buffers = 1,
 143         },
 144         {
 145                 .fourcc   = V4L2_PIX_FMT_NV42,
 146                 .vdownsampling = { 1, 1 },
 147                 .bit_depth = { 8, 16 },
 148                 .is_yuv   = true,
 149                 .planes   = 2,
 150                 .buffers = 1,
 151         },
 152         {
 153                 .fourcc   = V4L2_PIX_FMT_YUV555, /* uuuvvvvv ayyyyyuu */
 154                 .vdownsampling = { 1 },
 155                 .bit_depth = { 16 },
 156                 .planes   = 1,
 157                 .buffers = 1,
 158                 .alpha_mask = 0x8000,
 159         },
 160         {
 161                 .fourcc   = V4L2_PIX_FMT_YUV565, /* uuuvvvvv yyyyyuuu */
 162                 .vdownsampling = { 1 },
 163                 .bit_depth = { 16 },
 164                 .planes   = 1,
 165                 .buffers = 1,
 166         },
 167         {
 168                 .fourcc   = V4L2_PIX_FMT_YUV444, /* uuuuvvvv aaaayyyy */
 169                 .vdownsampling = { 1 },
 170                 .bit_depth = { 16 },
 171                 .planes   = 1,
 172                 .buffers = 1,
 173                 .alpha_mask = 0xf000,
 174         },
 175         {
 176                 .fourcc   = V4L2_PIX_FMT_YUV32, /* ayuv */
 177                 .vdownsampling = { 1 },
 178                 .bit_depth = { 32 },
 179                 .planes   = 1,
 180                 .buffers = 1,
 181                 .alpha_mask = 0x000000ff,
 182         },
 183         {
 184                 .fourcc   = V4L2_PIX_FMT_GREY,
 185                 .vdownsampling = { 1 },
 186                 .bit_depth = { 8 },
 187                 .is_yuv   = true,
 188                 .planes   = 1,
 189                 .buffers = 1,
 190         },
 191         {
 192                 .fourcc   = V4L2_PIX_FMT_Y16,
 193                 .vdownsampling = { 1 },
 194                 .bit_depth = { 16 },
 195                 .is_yuv   = true,
 196                 .planes   = 1,
 197                 .buffers = 1,
 198         },
 199         {
 200                 .fourcc   = V4L2_PIX_FMT_RGB332, /* rrrgggbb */
 201                 .vdownsampling = { 1 },
 202                 .bit_depth = { 8 },
 203                 .planes   = 1,
 204                 .buffers = 1,
 205         },
 206         {
 207                 .fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
 208                 .vdownsampling = { 1 },
 209                 .bit_depth = { 16 },
 210                 .planes   = 1,
 211                 .buffers = 1,
 212                 .can_do_overlay = true,
 213         },
 214         {
 215                 .fourcc   = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
 216                 .vdownsampling = { 1 },
 217                 .bit_depth = { 16 },
 218                 .planes   = 1,
 219                 .buffers = 1,
 220                 .can_do_overlay = true,
 221         },
 222         {
 223                 .fourcc   = V4L2_PIX_FMT_RGB444, /* xxxxrrrr ggggbbbb */
 224                 .vdownsampling = { 1 },
 225                 .bit_depth = { 16 },
 226                 .planes   = 1,
 227                 .buffers = 1,
 228         },
 229         {
 230                 .fourcc   = V4L2_PIX_FMT_XRGB444, /* xxxxrrrr ggggbbbb */
 231                 .vdownsampling = { 1 },
 232                 .bit_depth = { 16 },
 233                 .planes   = 1,
 234                 .buffers = 1,
 235         },
 236         {
 237                 .fourcc   = V4L2_PIX_FMT_ARGB444, /* aaaarrrr ggggbbbb */
 238                 .vdownsampling = { 1 },
 239                 .bit_depth = { 16 },
 240                 .planes   = 1,
 241                 .buffers = 1,
 242                 .alpha_mask = 0x00f0,
 243         },
 244         {
 245                 .fourcc   = V4L2_PIX_FMT_RGB555, /* gggbbbbb xrrrrrgg */
 246                 .vdownsampling = { 1 },
 247                 .bit_depth = { 16 },
 248                 .planes   = 1,
 249                 .buffers = 1,
 250                 .can_do_overlay = true,
 251         },
 252         {
 253                 .fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb xrrrrrgg */
 254                 .vdownsampling = { 1 },
 255                 .bit_depth = { 16 },
 256                 .planes   = 1,
 257                 .buffers = 1,
 258                 .can_do_overlay = true,
 259         },
 260         {
 261                 .fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
 262                 .vdownsampling = { 1 },
 263                 .bit_depth = { 16 },
 264                 .planes   = 1,
 265                 .buffers = 1,
 266                 .can_do_overlay = true,
 267                 .alpha_mask = 0x8000,
 268         },
 269         {
 270                 .fourcc   = V4L2_PIX_FMT_RGB555X, /* xrrrrrgg gggbbbbb */
 271                 .vdownsampling = { 1 },
 272                 .bit_depth = { 16 },
 273                 .planes   = 1,
 274                 .buffers = 1,
 275         },
 276         {
 277                 .fourcc   = V4L2_PIX_FMT_XRGB555X, /* xrrrrrgg gggbbbbb */
 278                 .vdownsampling = { 1 },
 279                 .bit_depth = { 16 },
 280                 .planes   = 1,
 281                 .buffers = 1,
 282         },
 283         {
 284                 .fourcc   = V4L2_PIX_FMT_ARGB555X, /* arrrrrgg gggbbbbb */
 285                 .vdownsampling = { 1 },
 286                 .bit_depth = { 16 },
 287                 .planes   = 1,
 288                 .buffers = 1,
 289                 .alpha_mask = 0x0080,
 290         },
 291         {
 292                 .fourcc   = V4L2_PIX_FMT_RGB24, /* rgb */
 293                 .vdownsampling = { 1 },
 294                 .bit_depth = { 24 },
 295                 .planes   = 1,
 296                 .buffers = 1,
 297         },
 298         {
 299                 .fourcc   = V4L2_PIX_FMT_BGR24, /* bgr */
 300                 .vdownsampling = { 1 },
 301                 .bit_depth = { 24 },
 302                 .planes   = 1,
 303                 .buffers = 1,
 304         },
 305         {
 306                 .fourcc   = V4L2_PIX_FMT_BGR666, /* bbbbbbgg ggggrrrr rrxxxxxx */
 307                 .vdownsampling = { 1 },
 308                 .bit_depth = { 32 },
 309                 .planes   = 1,
 310                 .buffers = 1,
 311         },
 312         {
 313                 .fourcc   = V4L2_PIX_FMT_RGB32, /* xrgb */
 314                 .vdownsampling = { 1 },
 315                 .bit_depth = { 32 },
 316                 .planes   = 1,
 317                 .buffers = 1,
 318         },
 319         {
 320                 .fourcc   = V4L2_PIX_FMT_BGR32, /* bgrx */
 321                 .vdownsampling = { 1 },
 322                 .bit_depth = { 32 },
 323                 .planes   = 1,
 324                 .buffers = 1,
 325         },
 326         {
 327                 .fourcc   = V4L2_PIX_FMT_XRGB32, /* xrgb */
 328                 .vdownsampling = { 1 },
 329                 .bit_depth = { 32 },
 330                 .planes   = 1,
 331                 .buffers = 1,
 332         },
 333         {
 334                 .fourcc   = V4L2_PIX_FMT_XBGR32, /* bgrx */
 335                 .vdownsampling = { 1 },
 336                 .bit_depth = { 32 },
 337                 .planes   = 1,
 338                 .buffers = 1,
 339         },
 340         {
 341                 .fourcc   = V4L2_PIX_FMT_ARGB32, /* argb */
 342                 .vdownsampling = { 1 },
 343                 .bit_depth = { 32 },
 344                 .planes   = 1,
 345                 .buffers = 1,
 346                 .alpha_mask = 0x000000ff,
 347         },
 348         {
 349                 .fourcc   = V4L2_PIX_FMT_ABGR32, /* bgra */
 350                 .vdownsampling = { 1 },
 351                 .bit_depth = { 32 },
 352                 .planes   = 1,
 353                 .buffers = 1,
 354                 .alpha_mask = 0xff000000,
 355         },
 356         {
 357                 .fourcc   = V4L2_PIX_FMT_SBGGR8, /* Bayer BG/GR */
 358                 .vdownsampling = { 1 },
 359                 .bit_depth = { 8 },
 360                 .planes   = 1,
 361                 .buffers = 1,
 362         },
 363         {
 364                 .fourcc   = V4L2_PIX_FMT_SGBRG8, /* Bayer GB/RG */
 365                 .vdownsampling = { 1 },
 366                 .bit_depth = { 8 },
 367                 .planes   = 1,
 368                 .buffers = 1,
 369         },
 370         {
 371                 .fourcc   = V4L2_PIX_FMT_SGRBG8, /* Bayer GR/BG */
 372                 .vdownsampling = { 1 },
 373                 .bit_depth = { 8 },
 374                 .planes   = 1,
 375                 .buffers = 1,
 376         },
 377         {
 378                 .fourcc   = V4L2_PIX_FMT_SRGGB8, /* Bayer RG/GB */
 379                 .vdownsampling = { 1 },
 380                 .bit_depth = { 8 },
 381                 .planes   = 1,
 382                 .buffers = 1,
 383         },
 384         {
 385                 .fourcc   = V4L2_PIX_FMT_NV16M,
 386                 .vdownsampling = { 1, 1 },
 387                 .bit_depth = { 8, 8 },
 388                 .is_yuv   = true,
 389                 .planes   = 2,
 390                 .buffers = 2,
 391                 .data_offset = { PLANE0_DATA_OFFSET, 0 },
 392         },
 393         {
 394                 .fourcc   = V4L2_PIX_FMT_NV61M,
 395                 .vdownsampling = { 1, 1 },
 396                 .bit_depth = { 8, 8 },
 397                 .is_yuv   = true,
 398                 .planes   = 2,
 399                 .buffers = 2,
 400                 .data_offset = { 0, PLANE0_DATA_OFFSET },
 401         },
 402         {
 403                 .fourcc   = V4L2_PIX_FMT_YUV420M,
 404                 .vdownsampling = { 1, 2, 2 },
 405                 .bit_depth = { 8, 4, 4 },
 406                 .is_yuv   = true,
 407                 .planes   = 3,
 408                 .buffers = 3,
 409         },
 410         {
 411                 .fourcc   = V4L2_PIX_FMT_YVU420M,
 412                 .vdownsampling = { 1, 2, 2 },
 413                 .bit_depth = { 8, 4, 4 },
 414                 .is_yuv   = true,
 415                 .planes   = 3,
 416                 .buffers = 3,
 417         },
 418         {
 419                 .fourcc   = V4L2_PIX_FMT_NV12M,
 420                 .vdownsampling = { 1, 2 },
 421                 .bit_depth = { 8, 8 },
 422                 .is_yuv   = true,
 423                 .planes   = 2,
 424                 .buffers = 2,
 425         },
 426         {
 427                 .fourcc   = V4L2_PIX_FMT_NV21M,
 428                 .vdownsampling = { 1, 2 },
 429                 .bit_depth = { 8, 8 },
 430                 .is_yuv   = true,
 431                 .planes   = 2,
 432                 .buffers = 2,
 433         },
 434 };
 435
 436 /* There are 6 multiplanar formats in the list */
 437 #define VIVID_MPLANAR_FORMATS 6
 438
 439 const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat)
 440 {
 441         const struct vivid_fmt *fmt;
 442         unsigned k;
 443
 444         for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
 445                 fmt = &vivid_formats[k];
 446                 if (fmt->fourcc == pixelformat)
 447                         if (fmt->buffers == 1 || dev->multiplanar)
 448                                 return fmt;
 449         }
 450
 451         return NULL;
 452 }
 453
 454 bool vivid_vid_can_loop(struct vivid_dev *dev)
 455 {
 456         if (dev->src_rect.width != dev->sink_rect.width ||
 457             dev->src_rect.height != dev->sink_rect.height)
 458                 return false;
 459         if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
 460                 return false;
 461         if (dev->field_cap != dev->field_out)
 462                 return false;
 463         /*
 464          * While this can be supported, it is just too much work
 465          * to actually implement.
 466          */
 467         if (dev->field_cap == V4L2_FIELD_SEQ_TB ||
 468             dev->field_cap == V4L2_FIELD_SEQ_BT)
 469                 return false;
 470         if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
 471                 if (!(dev->std_cap & V4L2_STD_525_60) !=
 472                     !(dev->std_out & V4L2_STD_525_60))
 473                         return false;
 474                 return true;
 475         }
 476         if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
 477                 return true;
 478         return false;
 479 }
 480
 481 void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
 482 {
 483         struct v4l2_event ev = {
 484                 .type = V4L2_EVENT_SOURCE_CHANGE,
 485                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
 486         };
 487         unsigned i;
 488
 489         for (i = 0; i < dev->num_inputs; i++) {
 490                 ev.id = i;
 491                 if (dev->input_type[i] == type) {
 492                         if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
 493                                 v4l2_event_queue(&dev->vid_cap_dev, &ev);
 494                         if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
 495                                 v4l2_event_queue(&dev->vbi_cap_dev, &ev);
 496                 }
 497         }
 498 }
 499
 500 /*
 501  * Conversion function that converts a single-planar format to a
 502  * single-plane multiplanar format.
 503  */
 504 void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt)
 505 {
 506         struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
 507         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 508         const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
 509         bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
 510
 511         memset(mp->reserved, 0, sizeof(mp->reserved));
 512         mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
 513                            V4L2_CAP_VIDEO_CAPTURE_MPLANE;
 514         mp->width = pix->width;
 515         mp->height = pix->height;
 516         mp->pixelformat = pix->pixelformat;
 517         mp->field = pix->field;
 518         mp->colorspace = pix->colorspace;
 519         mp->ycbcr_enc = pix->ycbcr_enc;
 520         mp->quantization = pix->quantization;
 521         mp->num_planes = 1;
 522         mp->flags = pix->flags;
 523         ppix->sizeimage = pix->sizeimage;
 524         ppix->bytesperline = pix->bytesperline;
 525         memset(ppix->reserved, 0, sizeof(ppix->reserved));
 526 }
 527
 528 int fmt_sp2mp_func(struct file *file, void *priv,
 529                 struct v4l2_format *f, fmtfunc func)
 530 {
 531         struct v4l2_format fmt;
 532         struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
 533         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 534         struct v4l2_pix_format *pix = &f->fmt.pix;
 535         int ret;
 536
 537         /* Converts to a mplane format */
 538         fmt_sp2mp(f, &fmt);
 539         /* Passes it to the generic mplane format function */
 540         ret = func(file, priv, &fmt);
 541         /* Copies back the mplane data to the single plane format */
 542         pix->width = mp->width;
 543         pix->height = mp->height;
 544         pix->pixelformat = mp->pixelformat;
 545         pix->field = mp->field;
 546         pix->colorspace = mp->colorspace;
 547         pix->ycbcr_enc = mp->ycbcr_enc;
 548         pix->quantization = mp->quantization;
 549         pix->sizeimage = ppix->sizeimage;
 550         pix->bytesperline = ppix->bytesperline;
 551         pix->flags = mp->flags;
 552         return ret;
 553 }
 554
 555 /* v4l2_rect helper function: copy the width/height values */
 556 void rect_set_size_to(struct v4l2_rect *r, const struct v4l2_rect *size)
 557 {
 558         r->width = size->width;
 559         r->height = size->height;
 560 }
 561
 562 /* v4l2_rect helper function: width and height of r should be >= min_size */
 563 void rect_set_min_size(struct v4l2_rect *r, const struct v4l2_rect *min_size)
 564 {
 565         if (r->width < min_size->width)
 566                 r->width = min_size->width;
 567         if (r->height < min_size->height)
 568                 r->height = min_size->height;
 569 }
 570
 571 /* v4l2_rect helper function: width and height of r should be <= max_size */
 572 void rect_set_max_size(struct v4l2_rect *r, const struct v4l2_rect *max_size)
 573 {
 574         if (r->width > max_size->width)
 575                 r->width = max_size->width;
 576         if (r->height > max_size->height)
 577                 r->height = max_size->height;
 578 }
 579
 580 /* v4l2_rect helper function: r should be inside boundary */
 581 void rect_map_inside(struct v4l2_rect *r, const struct v4l2_rect *boundary)
 582 {
 583         rect_set_max_size(r, boundary);
 584         if (r->left < boundary->left)
 585                 r->left = boundary->left;
 586         if (r->top < boundary->top)
 587                 r->top = boundary->top;
 588         if (r->left + r->width > boundary->width)
 589                 r->left = boundary->width - r->width;
 590         if (r->top + r->height > boundary->height)
 591                 r->top = boundary->height - r->height;
 592 }
 593
 594 /* v4l2_rect helper function: return true if r1 has the same size as r2 */
 595 bool rect_same_size(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 596 {
 597         return r1->width == r2->width && r1->height == r2->height;
 598 }
 599
 600 /* v4l2_rect helper function: calculate the intersection of two rects */
 601 struct v4l2_rect rect_intersect(const struct v4l2_rect *a, const struct v4l2_rect *b)
 602 {
 603         struct v4l2_rect r;
 604         int right, bottom;
 605
 606         r.top = max(a->top, b->top);
 607         r.left = max(a->left, b->left);
 608         bottom = min(a->top + a->height, b->top + b->height);
 609         right = min(a->left + a->width, b->left + b->width);
 610         r.height = max(0, bottom - r.top);
 611         r.width = max(0, right - r.left);
 612         return r;
 613 }
 614
 615 /*
 616  * v4l2_rect helper function: scale rect r by to->width / from->width and
 617  * to->height / from->height.
 618  */
 619 void rect_scale(struct v4l2_rect *r, const struct v4l2_rect *from,
 620                                      const struct v4l2_rect *to)
 621 {
 622         if (from->width == 0 || from->height == 0) {
 623                 r->left = r->top = r->width = r->height = 0;
 624                 return;
 625         }
 626         r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
 627         r->width = ((r->width * to->width) / from->width) & ~1;
 628         r->top = ((r->top - from->top) * to->height) / from->height;
 629         r->height = (r->height * to->height) / from->height;
 630 }
 631
 632 bool rect_overlap(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 633 {
 634         /*
 635          * IF the left side of r1 is to the right of the right side of r2 OR
 636          *    the left side of r2 is to the right of the right side of r1 THEN
 637          * they do not overlap.
 638          */
 639         if (r1->left >= r2->left + r2->width ||
 640             r2->left >= r1->left + r1->width)
 641                 return false;
 642         /*
 643          * IF the top side of r1 is below the bottom of r2 OR
 644          *    the top side of r2 is below the bottom of r1 THEN
 645          * they do not overlap.
 646          */
 647         if (r1->top >= r2->top + r2->height ||
 648             r2->top >= r1->top + r1->height)
 649                 return false;
 650         return true;
 651 }
 652 int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
 653 {
 654         unsigned w = r->width;
 655         unsigned h = r->height;
 656
 657         /* sanitize w and h in case someone passes ~0 as the value */
 658         w &= 0xffff;
 659         h &= 0xffff;
 660         if (!(flags & V4L2_SEL_FLAG_LE)) {
 661                 w++;
 662                 h++;
 663                 if (w < 2)
 664                         w = 2;
 665                 if (h < 2)
 666                         h = 2;
 667         }
 668         if (!(flags & V4L2_SEL_FLAG_GE)) {
 669                 if (w > MAX_WIDTH)
 670                         w = MAX_WIDTH;
 671                 if (h > MAX_HEIGHT)
 672                         h = MAX_HEIGHT;
 673         }
 674         w = w & ~1;
 675         h = h & ~1;
 676         if (w < 2 || h < 2)
 677                 return -ERANGE;
 678         if (w > MAX_WIDTH || h > MAX_HEIGHT)
 679                 return -ERANGE;
 680         if (r->top < 0)
 681                 r->top = 0;
 682         if (r->left < 0)
 683                 r->left = 0;
 684         /* sanitize left and top in case someone passes ~0 as the value */
 685         r->left &= 0xfffe;
 686         r->top &= 0xfffe;
 687         if (r->left + w > MAX_WIDTH)
 688                 r->left = MAX_WIDTH - w;
 689         if (r->top + h > MAX_HEIGHT)
 690                 r->top = MAX_HEIGHT - h;
 691         if ((flags & (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE)) ==
 692                         (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE) &&
 693             (r->width != w || r->height != h))
 694                 return -ERANGE;
 695         r->width = w;
 696         r->height = h;
 697         return 0;
 698 }
 699
 700 int vivid_enum_fmt_vid(struct file *file, void  *priv,
 701                                         struct v4l2_fmtdesc *f)
 702 {
 703         struct vivid_dev *dev = video_drvdata(file);
 704         const struct vivid_fmt *fmt;
 705
 706         if (f->index >= ARRAY_SIZE(vivid_formats) -
 707             (dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
 708                 return -EINVAL;
 709
 710         fmt = &vivid_formats[f->index];
 711
 712         f->pixelformat = fmt->fourcc;
 713         return 0;
 714 }
 715
 716 int vidioc_enum_fmt_vid_mplane(struct file *file, void  *priv,
 717                                         struct v4l2_fmtdesc *f)
 718 {
 719         struct vivid_dev *dev = video_drvdata(file);
 720
 721         if (!dev->multiplanar)
 722                 return -ENOTTY;
 723         return vivid_enum_fmt_vid(file, priv, f);
 724 }
 725
 726 int vidioc_enum_fmt_vid(struct file *file, void  *priv,
 727                                         struct v4l2_fmtdesc *f)
 728 {
 729         struct vivid_dev *dev = video_drvdata(file);
 730
 731         if (dev->multiplanar)
 732                 return -ENOTTY;
 733         return vivid_enum_fmt_vid(file, priv, f);
 734 }
 735
 736 int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 737 {
 738         struct vivid_dev *dev = video_drvdata(file);
 739         struct video_device *vdev = video_devdata(file);
 740
 741         if (vdev->vfl_dir == VFL_DIR_RX) {
 742                 if (!vivid_is_sdtv_cap(dev))
 743                         return -ENODATA;
 744                 *id = dev->std_cap;
 745         } else {
 746                 if (!vivid_is_svid_out(dev))
 747                         return -ENODATA;
 748                 *id = dev->std_out;
 749         }
 750         return 0;
 751 }
 752
 753 int vidioc_g_dv_timings(struct file *file, void *_fh,
 754                                     struct v4l2_dv_timings *timings)
 755 {
 756         struct vivid_dev *dev = video_drvdata(file);
 757         struct video_device *vdev = video_devdata(file);
 758
 759         if (vdev->vfl_dir == VFL_DIR_RX) {
 760                 if (!vivid_is_hdmi_cap(dev))
 761                         return -ENODATA;
 762                 *timings = dev->dv_timings_cap;
 763         } else {
 764                 if (!vivid_is_hdmi_out(dev))
 765                         return -ENODATA;
 766                 *timings = dev->dv_timings_out;
 767         }
 768         return 0;
 769 }
 770
 771 int vidioc_enum_dv_timings(struct file *file, void *_fh,
 772                                     struct v4l2_enum_dv_timings *timings)
 773 {
 774         struct vivid_dev *dev = video_drvdata(file);
 775         struct video_device *vdev = video_devdata(file);
 776
 777         if (vdev->vfl_dir == VFL_DIR_RX) {
 778                 if (!vivid_is_hdmi_cap(dev))
 779                         return -ENODATA;
 780         } else {
 781                 if (!vivid_is_hdmi_out(dev))
 782                         return -ENODATA;
 783         }
 784         return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap,
 785                         NULL, NULL);
 786 }
 787
 788 int vidioc_dv_timings_cap(struct file *file, void *_fh,
 789                                     struct v4l2_dv_timings_cap *cap)
 790 {
 791         struct vivid_dev *dev = video_drvdata(file);
 792         struct video_device *vdev = video_devdata(file);
 793
 794         if (vdev->vfl_dir == VFL_DIR_RX) {
 795                 if (!vivid_is_hdmi_cap(dev))
 796                         return -ENODATA;
 797         } else {
 798                 if (!vivid_is_hdmi_out(dev))
 799                         return -ENODATA;
 800         }
 801         *cap = vivid_dv_timings_cap;
 802         return 0;
 803 }
 804
 805 int vidioc_g_edid(struct file *file, void *_fh,
 806                          struct v4l2_edid *edid)
 807 {
 808         struct vivid_dev *dev = video_drvdata(file);
 809         struct video_device *vdev = video_devdata(file);
 810
 811         memset(edid->reserved, 0, sizeof(edid->reserved));
 812         if (vdev->vfl_dir == VFL_DIR_RX) {
 813                 if (edid->pad >= dev->num_inputs)
 814                         return -EINVAL;
 815                 if (dev->input_type[edid->pad] != HDMI)
 816                         return -EINVAL;
 817         } else {
 818                 if (edid->pad >= dev->num_outputs)
 819                         return -EINVAL;
 820                 if (dev->output_type[edid->pad] != HDMI)
 821                         return -EINVAL;
 822         }
 823         if (edid->start_block == 0 && edid->blocks == 0) {
 824                 edid->blocks = dev->edid_blocks;
 825                 return 0;
 826         }
 827         if (dev->edid_blocks == 0)
 828                 return -ENODATA;
 829         if (edid->start_block >= dev->edid_blocks)
 830                 return -EINVAL;
 831         if (edid->start_block + edid->blocks > dev->edid_blocks)
 832                 edid->blocks = dev->edid_blocks - edid->start_block;
 833         memcpy(edid->edid, dev->edid, edid->blocks * 128);
 834         return 0;
 835 }