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, 25000000, 600000000,
  37                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT,
  38                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
  39 };
  40
  41 /* ------------------------------------------------------------------
  42         Basic structures
  43    ------------------------------------------------------------------*/
  44
  45 struct vivid_fmt vivid_formats[] = {
  46         {
  47                 .name     = "4:2:2, packed, YUYV",
  48                 .fourcc   = V4L2_PIX_FMT_YUYV,
  49                 .depth    = 16,
  50                 .is_yuv   = true,
  51                 .planes   = 1,
  52                 .data_offset = { PLANE0_DATA_OFFSET, 0 },
  53         },
  54         {
  55                 .name     = "4:2:2, packed, UYVY",
  56                 .fourcc   = V4L2_PIX_FMT_UYVY,
  57                 .depth    = 16,
  58                 .is_yuv   = true,
  59                 .planes   = 1,
  60         },
  61         {
  62                 .name     = "4:2:2, packed, YVYU",
  63                 .fourcc   = V4L2_PIX_FMT_YVYU,
  64                 .depth    = 16,
  65                 .is_yuv   = true,
  66                 .planes   = 1,
  67         },
  68         {
  69                 .name     = "4:2:2, packed, VYUY",
  70                 .fourcc   = V4L2_PIX_FMT_VYUY,
  71                 .depth    = 16,
  72                 .is_yuv   = true,
  73                 .planes   = 1,
  74         },
  75         {
  76                 .name     = "RGB565 (LE)",
  77                 .fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
  78                 .depth    = 16,
  79                 .planes   = 1,
  80                 .can_do_overlay = true,
  81         },
  82         {
  83                 .name     = "RGB565 (BE)",
  84                 .fourcc   = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
  85                 .depth    = 16,
  86                 .planes   = 1,
  87                 .can_do_overlay = true,
  88         },
  89         {
  90                 .name     = "RGB555 (LE)",
  91                 .fourcc   = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
  92                 .depth    = 16,
  93                 .planes   = 1,
  94                 .can_do_overlay = true,
  95         },
  96         {
  97                 .name     = "XRGB555 (LE)",
  98                 .fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
  99                 .depth    = 16,
 100                 .planes   = 1,
 101                 .can_do_overlay = true,
 102         },
 103         {
 104                 .name     = "ARGB555 (LE)",
 105                 .fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
 106                 .depth    = 16,
 107                 .planes   = 1,
 108                 .can_do_overlay = true,
 109                 .alpha_mask = 0x8000,
 110         },
 111         {
 112                 .name     = "RGB555 (BE)",
 113                 .fourcc   = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
 114                 .depth    = 16,
 115                 .planes   = 1,
 116                 .can_do_overlay = true,
 117         },
 118         {
 119                 .name     = "RGB24 (LE)",
 120                 .fourcc   = V4L2_PIX_FMT_RGB24, /* rgb */
 121                 .depth    = 24,
 122                 .planes   = 1,
 123         },
 124         {
 125                 .name     = "RGB24 (BE)",
 126                 .fourcc   = V4L2_PIX_FMT_BGR24, /* bgr */
 127                 .depth    = 24,
 128                 .planes   = 1,
 129         },
 130         {
 131                 .name     = "RGB32 (LE)",
 132                 .fourcc   = V4L2_PIX_FMT_RGB32, /* argb */
 133                 .depth    = 32,
 134                 .planes   = 1,
 135         },
 136         {
 137                 .name     = "RGB32 (BE)",
 138                 .fourcc   = V4L2_PIX_FMT_BGR32, /* bgra */
 139                 .depth    = 32,
 140                 .planes   = 1,
 141         },
 142         {
 143                 .name     = "XRGB32 (LE)",
 144                 .fourcc   = V4L2_PIX_FMT_XRGB32, /* argb */
 145                 .depth    = 32,
 146                 .planes   = 1,
 147         },
 148         {
 149                 .name     = "XRGB32 (BE)",
 150                 .fourcc   = V4L2_PIX_FMT_XBGR32, /* bgra */
 151                 .depth    = 32,
 152                 .planes   = 1,
 153         },
 154         {
 155                 .name     = "ARGB32 (LE)",
 156                 .fourcc   = V4L2_PIX_FMT_ARGB32, /* argb */
 157                 .depth    = 32,
 158                 .planes   = 1,
 159                 .alpha_mask = 0x000000ff,
 160         },
 161         {
 162                 .name     = "ARGB32 (BE)",
 163                 .fourcc   = V4L2_PIX_FMT_ABGR32, /* bgra */
 164                 .depth    = 32,
 165                 .planes   = 1,
 166                 .alpha_mask = 0xff000000,
 167         },
 168         {
 169                 .name     = "4:2:2, planar, YUV",
 170                 .fourcc   = V4L2_PIX_FMT_NV16M,
 171                 .depth    = 8,
 172                 .is_yuv   = true,
 173                 .planes   = 2,
 174                 .data_offset = { PLANE0_DATA_OFFSET, 0 },
 175         },
 176         {
 177                 .name     = "4:2:2, planar, YVU",
 178                 .fourcc   = V4L2_PIX_FMT_NV61M,
 179                 .depth    = 8,
 180                 .is_yuv   = true,
 181                 .planes   = 2,
 182                 .data_offset = { 0, PLANE0_DATA_OFFSET },
 183         },
 184 };
 185
 186 /* There are 2 multiplanar formats in the list */
 187 #define VIVID_MPLANAR_FORMATS 2
 188
 189 const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat)
 190 {
 191         const struct vivid_fmt *fmt;
 192         unsigned k;
 193
 194         for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
 195                 fmt = &vivid_formats[k];
 196                 if (fmt->fourcc == pixelformat)
 197                         if (fmt->planes == 1 || dev->multiplanar)
 198                                 return fmt;
 199         }
 200
 201         return NULL;
 202 }
 203
 204 bool vivid_vid_can_loop(struct vivid_dev *dev)
 205 {
 206         if (dev->src_rect.width != dev->sink_rect.width ||
 207             dev->src_rect.height != dev->sink_rect.height)
 208                 return false;
 209         if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
 210                 return false;
 211         if (dev->field_cap != dev->field_out)
 212                 return false;
 213         if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
 214                 if (!(dev->std_cap & V4L2_STD_525_60) !=
 215                     !(dev->std_out & V4L2_STD_525_60))
 216                         return false;
 217                 return true;
 218         }
 219         if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
 220                 return true;
 221         return false;
 222 }
 223
 224 void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
 225 {
 226         struct v4l2_event ev = {
 227                 .type = V4L2_EVENT_SOURCE_CHANGE,
 228                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
 229         };
 230         unsigned i;
 231
 232         for (i = 0; i < dev->num_inputs; i++) {
 233                 ev.id = i;
 234                 if (dev->input_type[i] == type) {
 235                         if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
 236                                 v4l2_event_queue(&dev->vid_cap_dev, &ev);
 237                         if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
 238                                 v4l2_event_queue(&dev->vbi_cap_dev, &ev);
 239                 }
 240         }
 241 }
 242
 243 /*
 244  * Conversion function that converts a single-planar format to a
 245  * single-plane multiplanar format.
 246  */
 247 void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt)
 248 {
 249         struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
 250         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 251         const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
 252         bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
 253
 254         memset(mp->reserved, 0, sizeof(mp->reserved));
 255         mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
 256                            V4L2_CAP_VIDEO_CAPTURE_MPLANE;
 257         mp->width = pix->width;
 258         mp->height = pix->height;
 259         mp->pixelformat = pix->pixelformat;
 260         mp->field = pix->field;
 261         mp->colorspace = pix->colorspace;
 262         mp->ycbcr_enc = pix->ycbcr_enc;
 263         mp->quantization = pix->quantization;
 264         mp->num_planes = 1;
 265         mp->flags = pix->flags;
 266         ppix->sizeimage = pix->sizeimage;
 267         ppix->bytesperline = pix->bytesperline;
 268         memset(ppix->reserved, 0, sizeof(ppix->reserved));
 269 }
 270
 271 int fmt_sp2mp_func(struct file *file, void *priv,
 272                 struct v4l2_format *f, fmtfunc func)
 273 {
 274         struct v4l2_format fmt;
 275         struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
 276         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 277         struct v4l2_pix_format *pix = &f->fmt.pix;
 278         int ret;
 279
 280         /* Converts to a mplane format */
 281         fmt_sp2mp(f, &fmt);
 282         /* Passes it to the generic mplane format function */
 283         ret = func(file, priv, &fmt);
 284         /* Copies back the mplane data to the single plane format */
 285         pix->width = mp->width;
 286         pix->height = mp->height;
 287         pix->pixelformat = mp->pixelformat;
 288         pix->field = mp->field;
 289         pix->colorspace = mp->colorspace;
 290         pix->ycbcr_enc = mp->ycbcr_enc;
 291         pix->quantization = mp->quantization;
 292         pix->sizeimage = ppix->sizeimage;
 293         pix->bytesperline = ppix->bytesperline;
 294         pix->flags = mp->flags;
 295         return ret;
 296 }
 297
 298 /* v4l2_rect helper function: copy the width/height values */
 299 void rect_set_size_to(struct v4l2_rect *r, const struct v4l2_rect *size)
 300 {
 301         r->width = size->width;
 302         r->height = size->height;
 303 }
 304
 305 /* v4l2_rect helper function: width and height of r should be >= min_size */
 306 void rect_set_min_size(struct v4l2_rect *r, const struct v4l2_rect *min_size)
 307 {
 308         if (r->width < min_size->width)
 309                 r->width = min_size->width;
 310         if (r->height < min_size->height)
 311                 r->height = min_size->height;
 312 }
 313
 314 /* v4l2_rect helper function: width and height of r should be <= max_size */
 315 void rect_set_max_size(struct v4l2_rect *r, const struct v4l2_rect *max_size)
 316 {
 317         if (r->width > max_size->width)
 318                 r->width = max_size->width;
 319         if (r->height > max_size->height)
 320                 r->height = max_size->height;
 321 }
 322
 323 /* v4l2_rect helper function: r should be inside boundary */
 324 void rect_map_inside(struct v4l2_rect *r, const struct v4l2_rect *boundary)
 325 {
 326         rect_set_max_size(r, boundary);
 327         if (r->left < boundary->left)
 328                 r->left = boundary->left;
 329         if (r->top < boundary->top)
 330                 r->top = boundary->top;
 331         if (r->left + r->width > boundary->width)
 332                 r->left = boundary->width - r->width;
 333         if (r->top + r->height > boundary->height)
 334                 r->top = boundary->height - r->height;
 335 }
 336
 337 /* v4l2_rect helper function: return true if r1 has the same size as r2 */
 338 bool rect_same_size(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 339 {
 340         return r1->width == r2->width && r1->height == r2->height;
 341 }
 342
 343 /* v4l2_rect helper function: calculate the intersection of two rects */
 344 struct v4l2_rect rect_intersect(const struct v4l2_rect *a, const struct v4l2_rect *b)
 345 {
 346         struct v4l2_rect r;
 347         int right, bottom;
 348
 349         r.top = max(a->top, b->top);
 350         r.left = max(a->left, b->left);
 351         bottom = min(a->top + a->height, b->top + b->height);
 352         right = min(a->left + a->width, b->left + b->width);
 353         r.height = max(0, bottom - r.top);
 354         r.width = max(0, right - r.left);
 355         return r;
 356 }
 357
 358 /*
 359  * v4l2_rect helper function: scale rect r by to->width / from->width and
 360  * to->height / from->height.
 361  */
 362 void rect_scale(struct v4l2_rect *r, const struct v4l2_rect *from,
 363                                      const struct v4l2_rect *to)
 364 {
 365         if (from->width == 0 || from->height == 0) {
 366                 r->left = r->top = r->width = r->height = 0;
 367                 return;
 368         }
 369         r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
 370         r->width = ((r->width * to->width) / from->width) & ~1;
 371         r->top = ((r->top - from->top) * to->height) / from->height;
 372         r->height = (r->height * to->height) / from->height;
 373 }
 374
 375 bool rect_overlap(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 376 {
 377         /*
 378          * IF the left side of r1 is to the right of the right side of r2 OR
 379          *    the left side of r2 is to the right of the right side of r1 THEN
 380          * they do not overlap.
 381          */
 382         if (r1->left >= r2->left + r2->width ||
 383             r2->left >= r1->left + r1->width)
 384                 return false;
 385         /*
 386          * IF the top side of r1 is below the bottom of r2 OR
 387          *    the top side of r2 is below the bottom of r1 THEN
 388          * they do not overlap.
 389          */
 390         if (r1->top >= r2->top + r2->height ||
 391             r2->top >= r1->top + r1->height)
 392                 return false;
 393         return true;
 394 }
 395 int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
 396 {
 397         unsigned w = r->width;
 398         unsigned h = r->height;
 399
 400         if (!(flags & V4L2_SEL_FLAG_LE)) {
 401                 w++;
 402                 h++;
 403                 if (w < 2)
 404                         w = 2;
 405                 if (h < 2)
 406                         h = 2;
 407         }
 408         if (!(flags & V4L2_SEL_FLAG_GE)) {
 409                 if (w > MAX_WIDTH)
 410                         w = MAX_WIDTH;
 411                 if (h > MAX_HEIGHT)
 412                         h = MAX_HEIGHT;
 413         }
 414         w = w & ~1;
 415         h = h & ~1;
 416         if (w < 2 || h < 2)
 417                 return -ERANGE;
 418         if (w > MAX_WIDTH || h > MAX_HEIGHT)
 419                 return -ERANGE;
 420         if (r->top < 0)
 421                 r->top = 0;
 422         if (r->left < 0)
 423                 r->left = 0;
 424         r->left &= ~1;
 425         r->top &= ~1;
 426         if (r->left + w > MAX_WIDTH)
 427                 r->left = MAX_WIDTH - w;
 428         if (r->top + h > MAX_HEIGHT)
 429                 r->top = MAX_HEIGHT - h;
 430         if ((flags & (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE)) ==
 431                         (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE) &&
 432             (r->width != w || r->height != h))
 433                 return -ERANGE;
 434         r->width = w;
 435         r->height = h;
 436         return 0;
 437 }
 438
 439 int vivid_enum_fmt_vid(struct file *file, void  *priv,
 440                                         struct v4l2_fmtdesc *f)
 441 {
 442         struct vivid_dev *dev = video_drvdata(file);
 443         const struct vivid_fmt *fmt;
 444
 445         if (f->index >= ARRAY_SIZE(vivid_formats) -
 446             (dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
 447                 return -EINVAL;
 448
 449         fmt = &vivid_formats[f->index];
 450
 451         strlcpy(f->description, fmt->name, sizeof(f->description));
 452         f->pixelformat = fmt->fourcc;
 453         return 0;
 454 }
 455
 456 int vidioc_enum_fmt_vid_mplane(struct file *file, void  *priv,
 457                                         struct v4l2_fmtdesc *f)
 458 {
 459         struct vivid_dev *dev = video_drvdata(file);
 460
 461         if (!dev->multiplanar)
 462                 return -ENOTTY;
 463         return vivid_enum_fmt_vid(file, priv, f);
 464 }
 465
 466 int vidioc_enum_fmt_vid(struct file *file, void  *priv,
 467                                         struct v4l2_fmtdesc *f)
 468 {
 469         struct vivid_dev *dev = video_drvdata(file);
 470
 471         if (dev->multiplanar)
 472                 return -ENOTTY;
 473         return vivid_enum_fmt_vid(file, priv, f);
 474 }
 475
 476 int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 477 {
 478         struct vivid_dev *dev = video_drvdata(file);
 479         struct video_device *vdev = video_devdata(file);
 480
 481         if (vdev->vfl_dir == VFL_DIR_RX) {
 482                 if (!vivid_is_sdtv_cap(dev))
 483                         return -ENODATA;
 484                 *id = dev->std_cap;
 485         } else {
 486                 if (!vivid_is_svid_out(dev))
 487                         return -ENODATA;
 488                 *id = dev->std_out;
 489         }
 490         return 0;
 491 }
 492
 493 int vidioc_g_dv_timings(struct file *file, void *_fh,
 494                                     struct v4l2_dv_timings *timings)
 495 {
 496         struct vivid_dev *dev = video_drvdata(file);
 497         struct video_device *vdev = video_devdata(file);
 498
 499         if (vdev->vfl_dir == VFL_DIR_RX) {
 500                 if (!vivid_is_hdmi_cap(dev))
 501                         return -ENODATA;
 502                 *timings = dev->dv_timings_cap;
 503         } else {
 504                 if (!vivid_is_hdmi_out(dev))
 505                         return -ENODATA;
 506                 *timings = dev->dv_timings_out;
 507         }
 508         return 0;
 509 }
 510
 511 int vidioc_enum_dv_timings(struct file *file, void *_fh,
 512                                     struct v4l2_enum_dv_timings *timings)
 513 {
 514         struct vivid_dev *dev = video_drvdata(file);
 515         struct video_device *vdev = video_devdata(file);
 516
 517         if (vdev->vfl_dir == VFL_DIR_RX) {
 518                 if (!vivid_is_hdmi_cap(dev))
 519                         return -ENODATA;
 520         } else {
 521                 if (!vivid_is_hdmi_out(dev))
 522                         return -ENODATA;
 523         }
 524         return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap,
 525                         NULL, NULL);
 526 }
 527
 528 int vidioc_dv_timings_cap(struct file *file, void *_fh,
 529                                     struct v4l2_dv_timings_cap *cap)
 530 {
 531         struct vivid_dev *dev = video_drvdata(file);
 532         struct video_device *vdev = video_devdata(file);
 533
 534         if (vdev->vfl_dir == VFL_DIR_RX) {
 535                 if (!vivid_is_hdmi_cap(dev))
 536                         return -ENODATA;
 537         } else {
 538                 if (!vivid_is_hdmi_out(dev))
 539                         return -ENODATA;
 540         }
 541         *cap = vivid_dv_timings_cap;
 542         return 0;
 543 }
 544
 545 int vidioc_g_edid(struct file *file, void *_fh,
 546                          struct v4l2_edid *edid)
 547 {
 548         struct vivid_dev *dev = video_drvdata(file);
 549         struct video_device *vdev = video_devdata(file);
 550
 551         memset(edid->reserved, 0, sizeof(edid->reserved));
 552         if (vdev->vfl_dir == VFL_DIR_RX) {
 553                 if (edid->pad >= dev->num_inputs)
 554                         return -EINVAL;
 555                 if (dev->input_type[edid->pad] != HDMI)
 556                         return -EINVAL;
 557         } else {
 558                 if (edid->pad >= dev->num_outputs)
 559                         return -EINVAL;
 560                 if (dev->output_type[edid->pad] != HDMI)
 561                         return -EINVAL;
 562         }
 563         if (edid->start_block == 0 && edid->blocks == 0) {
 564                 edid->blocks = dev->edid_blocks;
 565                 return 0;
 566         }
 567         if (dev->edid_blocks == 0)
 568                 return -ENODATA;
 569         if (edid->start_block >= dev->edid_blocks)
 570                 return -EINVAL;
 571         if (edid->start_block + edid->blocks > dev->edid_blocks)
 572                 edid->blocks = dev->edid_blocks - edid->start_block;
 573         memcpy(edid->edid, dev->edid, edid->blocks * 128);
 574         return 0;
 575 }