include/media/v4l2-tpg.h

   1 /*
   2  * v4l2-tpg.h - Test Pattern Generator
   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 #ifndef _V4L2_TPG_H_
  21 #define _V4L2_TPG_H_
  22
  23 #include <linux/types.h>
  24 #include <linux/errno.h>
  25 #include <linux/random.h>
  26 #include <linux/slab.h>
  27 #include <linux/vmalloc.h>
  28 #include <linux/videodev2.h>
  29 #include <media/v4l2-tpg-colors.h>
  30
  31 enum tpg_pattern {
  32         TPG_PAT_75_COLORBAR,
  33         TPG_PAT_100_COLORBAR,
  34         TPG_PAT_CSC_COLORBAR,
  35         TPG_PAT_100_HCOLORBAR,
  36         TPG_PAT_100_COLORSQUARES,
  37         TPG_PAT_BLACK,
  38         TPG_PAT_WHITE,
  39         TPG_PAT_RED,
  40         TPG_PAT_GREEN,
  41         TPG_PAT_BLUE,
  42         TPG_PAT_CHECKERS_16X16,
  43         TPG_PAT_CHECKERS_2X2,
  44         TPG_PAT_CHECKERS_1X1,
  45         TPG_PAT_COLOR_CHECKERS_2X2,
  46         TPG_PAT_COLOR_CHECKERS_1X1,
  47         TPG_PAT_ALTERNATING_HLINES,
  48         TPG_PAT_ALTERNATING_VLINES,
  49         TPG_PAT_CROSS_1_PIXEL,
  50         TPG_PAT_CROSS_2_PIXELS,
  51         TPG_PAT_CROSS_10_PIXELS,
  52         TPG_PAT_GRAY_RAMP,
  53
  54         /* Must be the last pattern */
  55         TPG_PAT_NOISE,
  56 };
  57
  58 extern const char * const tpg_pattern_strings[];
  59
  60 enum tpg_quality {
  61         TPG_QUAL_COLOR,
  62         TPG_QUAL_GRAY,
  63         TPG_QUAL_NOISE
  64 };
  65
  66 enum tpg_video_aspect {
  67         TPG_VIDEO_ASPECT_IMAGE,
  68         TPG_VIDEO_ASPECT_4X3,
  69         TPG_VIDEO_ASPECT_14X9_CENTRE,
  70         TPG_VIDEO_ASPECT_16X9_CENTRE,
  71         TPG_VIDEO_ASPECT_16X9_ANAMORPHIC,
  72 };
  73
  74 enum tpg_pixel_aspect {
  75         TPG_PIXEL_ASPECT_SQUARE,
  76         TPG_PIXEL_ASPECT_NTSC,
  77         TPG_PIXEL_ASPECT_PAL,
  78 };
  79
  80 enum tpg_move_mode {
  81         TPG_MOVE_NEG_FAST,
  82         TPG_MOVE_NEG,
  83         TPG_MOVE_NEG_SLOW,
  84         TPG_MOVE_NONE,
  85         TPG_MOVE_POS_SLOW,
  86         TPG_MOVE_POS,
  87         TPG_MOVE_POS_FAST,
  88 };
  89
  90 extern const char * const tpg_aspect_strings[];
  91
  92 #define TPG_MAX_PLANES 3
  93 #define TPG_MAX_PAT_LINES 8
  94
  95 struct tpg_data {
  96         /* Source frame size */
  97         unsigned                        src_width, src_height;
  98         /* Buffer height */
  99         unsigned                        buf_height;
 100         /* Scaled output frame size */
 101         unsigned                        scaled_width;
 102         u32                             field;
 103         bool                            field_alternate;
 104         /* crop coordinates are frame-based */
 105         struct v4l2_rect                crop;
 106         /* compose coordinates are format-based */
 107         struct v4l2_rect                compose;
 108         /* border and square coordinates are frame-based */
 109         struct v4l2_rect                border;
 110         struct v4l2_rect                square;
 111
 112         /* Color-related fields */
 113         enum tpg_quality                qual;
 114         unsigned                        qual_offset;
 115         u8                              alpha_component;
 116         bool                            alpha_red_only;
 117         u8                              brightness;
 118         u8                              contrast;
 119         u8                              saturation;
 120         s16                             hue;
 121         u32                             fourcc;
 122         bool                            is_yuv;
 123         u32                             colorspace;
 124         u32                             xfer_func;
 125         u32                             ycbcr_enc;
 126         /*
 127          * Stores the actual transfer function, i.e. will never be
 128          * V4L2_XFER_FUNC_DEFAULT.
 129          */
 130         u32                             real_xfer_func;
 131         /*
 132          * Stores the actual Y'CbCr encoding, i.e. will never be
 133          * V4L2_YCBCR_ENC_DEFAULT.
 134          */
 135         u32                             real_ycbcr_enc;
 136         u32                             quantization;
 137         /*
 138          * Stores the actual quantization, i.e. will never be
 139          * V4L2_QUANTIZATION_DEFAULT.
 140          */
 141         u32                             real_quantization;
 142         enum tpg_video_aspect           vid_aspect;
 143         enum tpg_pixel_aspect           pix_aspect;
 144         unsigned                        rgb_range;
 145         unsigned                        real_rgb_range;
 146         unsigned                        buffers;
 147         unsigned                        planes;
 148         bool                            interleaved;
 149         u8                              vdownsampling[TPG_MAX_PLANES];
 150         u8                              hdownsampling[TPG_MAX_PLANES];
 151         /*
 152          * horizontal positions must be ANDed with this value to enforce
 153          * correct boundaries for packed YUYV values.
 154          */
 155         unsigned                        hmask[TPG_MAX_PLANES];
 156         /* Used to store the colors in native format, either RGB or YUV */
 157         u8                              colors[TPG_COLOR_MAX][3];
 158         u8                              textfg[TPG_MAX_PLANES][8], textbg[TPG_MAX_PLANES][8];
 159         /* size in bytes for two pixels in each plane */
 160         unsigned                        twopixelsize[TPG_MAX_PLANES];
 161         unsigned                        bytesperline[TPG_MAX_PLANES];
 162
 163         /* Configuration */
 164         enum tpg_pattern                pattern;
 165         bool                            hflip;
 166         bool                            vflip;
 167         unsigned                        perc_fill;
 168         bool                            perc_fill_blank;
 169         bool                            show_border;
 170         bool                            show_square;
 171         bool                            insert_sav;
 172         bool                            insert_eav;
 173
 174         /* Test pattern movement */
 175         enum tpg_move_mode              mv_hor_mode;
 176         int                             mv_hor_count;
 177         int                             mv_hor_step;
 178         enum tpg_move_mode              mv_vert_mode;
 179         int                             mv_vert_count;
 180         int                             mv_vert_step;
 181
 182         bool                            recalc_colors;
 183         bool                            recalc_lines;
 184         bool                            recalc_square_border;
 185
 186         /* Used to store TPG_MAX_PAT_LINES lines, each with up to two planes */
 187         unsigned                        max_line_width;
 188         u8                              *lines[TPG_MAX_PAT_LINES][TPG_MAX_PLANES];
 189         u8                              *downsampled_lines[TPG_MAX_PAT_LINES][TPG_MAX_PLANES];
 190         u8                              *random_line[TPG_MAX_PLANES];
 191         u8                              *contrast_line[TPG_MAX_PLANES];
 192         u8                              *black_line[TPG_MAX_PLANES];
 193 };
 194
 195 void tpg_init(struct tpg_data *tpg, unsigned w, unsigned h);
 196 int tpg_alloc(struct tpg_data *tpg, unsigned max_w);
 197 void tpg_free(struct tpg_data *tpg);
 198 void tpg_reset_source(struct tpg_data *tpg, unsigned width, unsigned height,
 199                        u32 field);
 200 void tpg_log_status(struct tpg_data *tpg);
 201
 202 void tpg_set_font(const u8 *f);
 203 void tpg_gen_text(const struct tpg_data *tpg,
 204                 u8 *basep[TPG_MAX_PLANES][2], int y, int x, char *text);
 205 void tpg_calc_text_basep(struct tpg_data *tpg,
 206                 u8 *basep[TPG_MAX_PLANES][2], unsigned p, u8 *vbuf);
 207 unsigned tpg_g_interleaved_plane(const struct tpg_data *tpg, unsigned buf_line);
 208 void tpg_fill_plane_buffer(struct tpg_data *tpg, v4l2_std_id std,
 209                            unsigned p, u8 *vbuf);
 210 void tpg_fillbuffer(struct tpg_data *tpg, v4l2_std_id std,
 211                     unsigned p, u8 *vbuf);
 212 bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc);
 213 void tpg_s_crop_compose(struct tpg_data *tpg, const struct v4l2_rect *crop,
 214                 const struct v4l2_rect *compose);
 215
 216 static inline void tpg_s_pattern(struct tpg_data *tpg, enum tpg_pattern pattern)
 217 {
 218         if (tpg->pattern == pattern)
 219                 return;
 220         tpg->pattern = pattern;
 221         tpg->recalc_colors = true;
 222 }
 223
 224 static inline void tpg_s_quality(struct tpg_data *tpg,
 225                                     enum tpg_quality qual, unsigned qual_offset)
 226 {
 227         if (tpg->qual == qual && tpg->qual_offset == qual_offset)
 228                 return;
 229         tpg->qual = qual;
 230         tpg->qual_offset = qual_offset;
 231         tpg->recalc_colors = true;
 232 }
 233
 234 static inline enum tpg_quality tpg_g_quality(const struct tpg_data *tpg)
 235 {
 236         return tpg->qual;
 237 }
 238
 239 static inline void tpg_s_alpha_component(struct tpg_data *tpg,
 240                                             u8 alpha_component)
 241 {
 242         if (tpg->alpha_component == alpha_component)
 243                 return;
 244         tpg->alpha_component = alpha_component;
 245         tpg->recalc_colors = true;
 246 }
 247
 248 static inline void tpg_s_alpha_mode(struct tpg_data *tpg,
 249                                             bool red_only)
 250 {
 251         if (tpg->alpha_red_only == red_only)
 252                 return;
 253         tpg->alpha_red_only = red_only;
 254         tpg->recalc_colors = true;
 255 }
 256
 257 static inline void tpg_s_brightness(struct tpg_data *tpg,
 258                                         u8 brightness)
 259 {
 260         if (tpg->brightness == brightness)
 261                 return;
 262         tpg->brightness = brightness;
 263         tpg->recalc_colors = true;
 264 }
 265
 266 static inline void tpg_s_contrast(struct tpg_data *tpg,
 267                                         u8 contrast)
 268 {
 269         if (tpg->contrast == contrast)
 270                 return;
 271         tpg->contrast = contrast;
 272         tpg->recalc_colors = true;
 273 }
 274
 275 static inline void tpg_s_saturation(struct tpg_data *tpg,
 276                                         u8 saturation)
 277 {
 278         if (tpg->saturation == saturation)
 279                 return;
 280         tpg->saturation = saturation;
 281         tpg->recalc_colors = true;
 282 }
 283
 284 static inline void tpg_s_hue(struct tpg_data *tpg,
 285                                         s16 hue)
 286 {
 287         if (tpg->hue == hue)
 288                 return;
 289         tpg->hue = hue;
 290         tpg->recalc_colors = true;
 291 }
 292
 293 static inline void tpg_s_rgb_range(struct tpg_data *tpg,
 294                                         unsigned rgb_range)
 295 {
 296         if (tpg->rgb_range == rgb_range)
 297                 return;
 298         tpg->rgb_range = rgb_range;
 299         tpg->recalc_colors = true;
 300 }
 301
 302 static inline void tpg_s_real_rgb_range(struct tpg_data *tpg,
 303                                         unsigned rgb_range)
 304 {
 305         if (tpg->real_rgb_range == rgb_range)
 306                 return;
 307         tpg->real_rgb_range = rgb_range;
 308         tpg->recalc_colors = true;
 309 }
 310
 311 static inline void tpg_s_colorspace(struct tpg_data *tpg, u32 colorspace)
 312 {
 313         if (tpg->colorspace == colorspace)
 314                 return;
 315         tpg->colorspace = colorspace;
 316         tpg->recalc_colors = true;
 317 }
 318
 319 static inline u32 tpg_g_colorspace(const struct tpg_data *tpg)
 320 {
 321         return tpg->colorspace;
 322 }
 323
 324 static inline void tpg_s_ycbcr_enc(struct tpg_data *tpg, u32 ycbcr_enc)
 325 {
 326         if (tpg->ycbcr_enc == ycbcr_enc)
 327                 return;
 328         tpg->ycbcr_enc = ycbcr_enc;
 329         tpg->recalc_colors = true;
 330 }
 331
 332 static inline u32 tpg_g_ycbcr_enc(const struct tpg_data *tpg)
 333 {
 334         return tpg->ycbcr_enc;
 335 }
 336
 337 static inline void tpg_s_xfer_func(struct tpg_data *tpg, u32 xfer_func)
 338 {
 339         if (tpg->xfer_func == xfer_func)
 340                 return;
 341         tpg->xfer_func = xfer_func;
 342         tpg->recalc_colors = true;
 343 }
 344
 345 static inline u32 tpg_g_xfer_func(const struct tpg_data *tpg)
 346 {
 347         return tpg->xfer_func;
 348 }
 349
 350 static inline void tpg_s_quantization(struct tpg_data *tpg, u32 quantization)
 351 {
 352         if (tpg->quantization == quantization)
 353                 return;
 354         tpg->quantization = quantization;
 355         tpg->recalc_colors = true;
 356 }
 357
 358 static inline u32 tpg_g_quantization(const struct tpg_data *tpg)
 359 {
 360         return tpg->quantization;
 361 }
 362
 363 static inline unsigned tpg_g_buffers(const struct tpg_data *tpg)
 364 {
 365         return tpg->buffers;
 366 }
 367
 368 static inline unsigned tpg_g_planes(const struct tpg_data *tpg)
 369 {
 370         return tpg->interleaved ? 1 : tpg->planes;
 371 }
 372
 373 static inline bool tpg_g_interleaved(const struct tpg_data *tpg)
 374 {
 375         return tpg->interleaved;
 376 }
 377
 378 static inline unsigned tpg_g_twopixelsize(const struct tpg_data *tpg, unsigned plane)
 379 {
 380         return tpg->twopixelsize[plane];
 381 }
 382
 383 static inline unsigned tpg_hdiv(const struct tpg_data *tpg,
 384                                   unsigned plane, unsigned x)
 385 {
 386         return ((x / tpg->hdownsampling[plane]) & tpg->hmask[plane]) *
 387                 tpg->twopixelsize[plane] / 2;
 388 }
 389
 390 static inline unsigned tpg_hscale(const struct tpg_data *tpg, unsigned x)
 391 {
 392         return (x * tpg->scaled_width) / tpg->src_width;
 393 }
 394
 395 static inline unsigned tpg_hscale_div(const struct tpg_data *tpg,
 396                                       unsigned plane, unsigned x)
 397 {
 398         return tpg_hdiv(tpg, plane, tpg_hscale(tpg, x));
 399 }
 400
 401 static inline unsigned tpg_g_bytesperline(const struct tpg_data *tpg, unsigned plane)
 402 {
 403         return tpg->bytesperline[plane];
 404 }
 405
 406 static inline void tpg_s_bytesperline(struct tpg_data *tpg, unsigned plane, unsigned bpl)
 407 {
 408         unsigned p;
 409
 410         if (tpg->buffers > 1) {
 411                 tpg->bytesperline[plane] = bpl;
 412                 return;
 413         }
 414
 415         for (p = 0; p < tpg_g_planes(tpg); p++) {
 416                 unsigned plane_w = bpl * tpg->twopixelsize[p] / tpg->twopixelsize[0];
 417
 418                 tpg->bytesperline[p] = plane_w / tpg->hdownsampling[p];
 419         }
 420         if (tpg_g_interleaved(tpg))
 421                 tpg->bytesperline[1] = tpg->bytesperline[0];
 422 }
 423
 424
 425 static inline unsigned tpg_g_line_width(const struct tpg_data *tpg, unsigned plane)
 426 {
 427         unsigned w = 0;
 428         unsigned p;
 429
 430         if (tpg->buffers > 1)
 431                 return tpg_g_bytesperline(tpg, plane);
 432         for (p = 0; p < tpg_g_planes(tpg); p++) {
 433                 unsigned plane_w = tpg_g_bytesperline(tpg, p);
 434
 435                 w += plane_w / tpg->vdownsampling[p];
 436         }
 437         return w;
 438 }
 439
 440 static inline unsigned tpg_calc_line_width(const struct tpg_data *tpg,
 441                                            unsigned plane, unsigned bpl)
 442 {
 443         unsigned w = 0;
 444         unsigned p;
 445
 446         if (tpg->buffers > 1)
 447                 return bpl;
 448         for (p = 0; p < tpg_g_planes(tpg); p++) {
 449                 unsigned plane_w = bpl * tpg->twopixelsize[p] / tpg->twopixelsize[0];
 450
 451                 plane_w /= tpg->hdownsampling[p];
 452                 w += plane_w / tpg->vdownsampling[p];
 453         }
 454         return w;
 455 }
 456
 457 static inline unsigned tpg_calc_plane_size(const struct tpg_data *tpg, unsigned plane)
 458 {
 459         if (plane >= tpg_g_planes(tpg))
 460                 return 0;
 461
 462         return tpg_g_bytesperline(tpg, plane) * tpg->buf_height /
 463                tpg->vdownsampling[plane];
 464 }
 465
 466 static inline void tpg_s_buf_height(struct tpg_data *tpg, unsigned h)
 467 {
 468         tpg->buf_height = h;
 469 }
 470
 471 static inline void tpg_s_field(struct tpg_data *tpg, unsigned field, bool alternate)
 472 {
 473         tpg->field = field;
 474         tpg->field_alternate = alternate;
 475 }
 476
 477 static inline void tpg_s_perc_fill(struct tpg_data *tpg,
 478                                       unsigned perc_fill)
 479 {
 480         tpg->perc_fill = perc_fill;
 481 }
 482
 483 static inline unsigned tpg_g_perc_fill(const struct tpg_data *tpg)
 484 {
 485         return tpg->perc_fill;
 486 }
 487
 488 static inline void tpg_s_perc_fill_blank(struct tpg_data *tpg,
 489                                          bool perc_fill_blank)
 490 {
 491         tpg->perc_fill_blank = perc_fill_blank;
 492 }
 493
 494 static inline void tpg_s_video_aspect(struct tpg_data *tpg,
 495                                         enum tpg_video_aspect vid_aspect)
 496 {
 497         if (tpg->vid_aspect == vid_aspect)
 498                 return;
 499         tpg->vid_aspect = vid_aspect;
 500         tpg->recalc_square_border = true;
 501 }
 502
 503 static inline enum tpg_video_aspect tpg_g_video_aspect(const struct tpg_data *tpg)
 504 {
 505         return tpg->vid_aspect;
 506 }
 507
 508 static inline void tpg_s_pixel_aspect(struct tpg_data *tpg,
 509                                         enum tpg_pixel_aspect pix_aspect)
 510 {
 511         if (tpg->pix_aspect == pix_aspect)
 512                 return;
 513         tpg->pix_aspect = pix_aspect;
 514         tpg->recalc_square_border = true;
 515 }
 516
 517 static inline void tpg_s_show_border(struct tpg_data *tpg,
 518                                         bool show_border)
 519 {
 520         tpg->show_border = show_border;
 521 }
 522
 523 static inline void tpg_s_show_square(struct tpg_data *tpg,
 524                                         bool show_square)
 525 {
 526         tpg->show_square = show_square;
 527 }
 528
 529 static inline void tpg_s_insert_sav(struct tpg_data *tpg, bool insert_sav)
 530 {
 531         tpg->insert_sav = insert_sav;
 532 }
 533
 534 static inline void tpg_s_insert_eav(struct tpg_data *tpg, bool insert_eav)
 535 {
 536         tpg->insert_eav = insert_eav;
 537 }
 538
 539 void tpg_update_mv_step(struct tpg_data *tpg);
 540
 541 static inline void tpg_s_mv_hor_mode(struct tpg_data *tpg,
 542                                 enum tpg_move_mode mv_hor_mode)
 543 {
 544         tpg->mv_hor_mode = mv_hor_mode;
 545         tpg_update_mv_step(tpg);
 546 }
 547
 548 static inline void tpg_s_mv_vert_mode(struct tpg_data *tpg,
 549                                 enum tpg_move_mode mv_vert_mode)
 550 {
 551         tpg->mv_vert_mode = mv_vert_mode;
 552         tpg_update_mv_step(tpg);
 553 }
 554
 555 static inline void tpg_init_mv_count(struct tpg_data *tpg)
 556 {
 557         tpg->mv_hor_count = tpg->mv_vert_count = 0;
 558 }
 559
 560 static inline void tpg_update_mv_count(struct tpg_data *tpg, bool frame_is_field)
 561 {
 562         tpg->mv_hor_count += tpg->mv_hor_step * (frame_is_field ? 1 : 2);
 563         tpg->mv_vert_count += tpg->mv_vert_step * (frame_is_field ? 1 : 2);
 564 }
 565
 566 static inline void tpg_s_hflip(struct tpg_data *tpg, bool hflip)
 567 {
 568         if (tpg->hflip == hflip)
 569                 return;
 570         tpg->hflip = hflip;
 571         tpg_update_mv_step(tpg);
 572         tpg->recalc_lines = true;
 573 }
 574
 575 static inline bool tpg_g_hflip(const struct tpg_data *tpg)
 576 {
 577         return tpg->hflip;
 578 }
 579
 580 static inline void tpg_s_vflip(struct tpg_data *tpg, bool vflip)
 581 {
 582         tpg->vflip = vflip;
 583 }
 584
 585 static inline bool tpg_g_vflip(const struct tpg_data *tpg)
 586 {
 587         return tpg->vflip;
 588 }
 589
 590 static inline bool tpg_pattern_is_static(const struct tpg_data *tpg)
 591 {
 592         return tpg->pattern != TPG_PAT_NOISE &&
 593                tpg->mv_hor_mode == TPG_MOVE_NONE &&
 594                tpg->mv_vert_mode == TPG_MOVE_NONE;
 595 }
 596
 597 #endif