lib/dvb/subtitle.cpp

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <fcntl.h>
   4 #include <memory.h>
   5 #include <time.h>
   6
   7 #include <asm/types.h>
   8 #include <lib/dvb/idemux.h>
   9 #include <lib/dvb/subtitle.h>
  10 #include <lib/base/smartptr.h>
  11 #include <lib/base/eerror.h>
  12 #include <lib/gdi/gpixmap.h>
  13
  14 void bitstream_init(bitstream *bit, const void *buffer, int size)
  15 {
  16         bit->data = (__u8*) buffer;
  17         bit->size = size;
  18         bit->avail = 8;
  19         bit->consumed = 0;
  20 }
  21
  22 int bitstream_get(bitstream *bit)
  23 {
  24         int val;
  25         bit->avail -= bit->size;
  26         val = ((*bit->data) >> bit->avail) & ((1<<bit->size) - 1);
  27         if (!bit->avail)
  28         {
  29                 bit->data++;
  30                 bit->consumed++;
  31                 bit->avail = 8;
  32         }
  33         return val;
  34 }
  35
  36 static int extract_pts(pts_t &pts, __u8 *pkt)
  37 {
  38         pkt += 7;
  39         int flags = *pkt++;
  40
  41         pkt++; // header length
  42
  43         if (flags & 0x80) /* PTS present? */
  44         {
  45                         /* damn gcc bug */
  46                 pts  = ((unsigned long long)(((pkt[0] >> 1) & 7))) << 30;
  47                 pts |=   pkt[1] << 22;
  48                 pts |=  (pkt[2]>>1) << 15;
  49                 pts |=   pkt[3] << 7;
  50                 pts |=  (pkt[5]>>1);
  51
  52                 return 0;
  53         } else
  54                 return -1;
  55 }
  56
  57 void eDVBSubtitleParser::subtitle_process_line(subtitle_region *region, subtitle_region_object *object, int line, __u8 *data, int len)
  58 {
  59         int x = object->object_horizontal_position;
  60         int y = object->object_vertical_position + line;
  61         if (x + len > region->width)
  62         {
  63 //              eDebug("[SUB] !!!! XCLIP %d + %d > %d", x, len, region->width);
  64                 len = region->width - x;
  65         }
  66         if (len < 0)
  67                 return;
  68         if (y >= region->height)
  69         {
  70 //              eDebug("[SUB] !!!! YCLIP %d >= %d", y, region->height);
  71                 return;
  72         }
  73 //      eDebug("inserting %d bytes (into region %d)", len, region->region_id);
  74 //      eDebug("put data to buffer %p", &(*region->buffer));
  75         memcpy((__u8*)region->buffer->surface->data + region->buffer->surface->stride * y + x, data, len);
  76 }
  77
  78 static int map_2_to_4_bit_table[4];
  79 static int map_2_to_8_bit_table[4];
  80 static int map_4_to_8_bit_table[16];
  81
  82 int eDVBSubtitleParser::subtitle_process_pixel_data(subtitle_region *region, subtitle_region_object *object, int *linenr, int *linep, __u8 *data)
  83 {
  84         int data_type = *data++;
  85         static __u8 line[1920];
  86
  87         bitstream bit;
  88         bit.size=0;
  89         switch (data_type)
  90         {
  91         case 0x10: // 2bit pixel data
  92 //              eDebug("2bit pixel data!");
  93                 bitstream_init(&bit, data, 2);
  94                 while (1)
  95                 {
  96                         int len=0, col=0;
  97                         int code = bitstream_get(&bit);
  98                         if (code)
  99                         {
 100                                 col = code;
 101                                 len = 1;
 102                         } else
 103                         {
 104                                 code = bitstream_get(&bit);
 105                                 if (!code)
 106                                 {
 107                                         code = bitstream_get(&bit);
 108                                         if (code == 1)
 109                                         {
 110                                                 col = 0;
 111                                                 len = 2;
 112                                         } else if (code == 2)
 113                                         {
 114                                                 len = bitstream_get(&bit) << 2;
 115                                                 len |= bitstream_get(&bit);
 116                                                 len += 12;
 117                                                 col = bitstream_get(&bit);
 118                                         } else if (code == 3)
 119                                         {
 120                                                 len = bitstream_get(&bit) << 6;
 121                                                 len |= bitstream_get(&bit) << 4;
 122                                                 len |= bitstream_get(&bit) << 2;
 123                                                 len |= bitstream_get(&bit);
 124                                                 len += 29;
 125                                                 col = bitstream_get(&bit);
 126                                         } else
 127                                                 break;
 128                                 } else if (code==1)
 129                                 {
 130                                         col = 0;
 131                                         len = 1;
 132                                 } else if (code&2)
 133                                 {
 134                                         if (code&1)
 135                                                 len = 3 + 4 + bitstream_get(&bit);
 136                                         else
 137                                                 len = 3 + bitstream_get(&bit);
 138                                         col = bitstream_get(&bit);
 139                                 }
 140                         }
 141                         uint8_t c = region->depth == subtitle_region::bpp4 ?
 142                                 map_2_to_4_bit_table[col] :
 143                                 region->depth == subtitle_region::bpp8 ?
 144                                 map_2_to_8_bit_table[col] : col;
 145                         while (len && ((*linep) < m_display_size.width()))
 146                         {
 147                                 line[(*linep)++] = c;
 148                                 len--;
 149                         }
 150                 }
 151                 while (bit.avail != 8)
 152                         bitstream_get(&bit);
 153                 return bit.consumed + 1;
 154         case 0x11: // 4bit pixel data
 155 //              eDebug("4bit pixel data!");
 156                 bitstream_init(&bit, data, 4);
 157                 while (1)
 158                 {
 159                         int len=0, col=0;
 160                         int code = bitstream_get(&bit);
 161                         if (code)
 162                         {
 163                                 col = code;
 164                                 len = 1;
 165                         } else
 166                         {
 167                                 code = bitstream_get(&bit);
 168                                 if (!code)
 169                                         break;
 170                                 else if (code == 0xC)
 171                                 {
 172                                         col = 0;
 173                                         len = 1;
 174                                 } else if (code == 0xD)
 175                                 {
 176                                         col = 0;
 177                                         len = 2;
 178                                 } else if (code < 8)
 179                                 {
 180                                         col = 0;
 181                                         len = (code & 7) + 2;
 182                                 } else if ((code & 0xC) == 0x8)
 183                                 {
 184                                         col = bitstream_get(&bit);
 185                                         len = (code & 3) + 4;
 186                                 } else if (code == 0xE)
 187                                 {
 188                                         len = bitstream_get(&bit) + 9;
 189                                         col = bitstream_get(&bit);
 190                                 } else if (code == 0xF)
 191                                 {
 192                                         len  = bitstream_get(&bit) << 4;
 193                                         len |= bitstream_get(&bit);
 194                                         len += 25;
 195                                         col  = bitstream_get(&bit);
 196                                 }
 197                         }
 198                         uint8_t c = region->depth == subtitle_region::bpp8 ?
 199                                 map_4_to_8_bit_table[col] : col;
 200                         while (len && ((*linep) < m_display_size.width()))
 201                         {
 202                                 line[(*linep)++] = c;
 203                                 len--;
 204                         }
 205                 }
 206                 while (bit.avail != 8)
 207                         bitstream_get(&bit);
 208                 return bit.consumed + 1;
 209         case 0x12: // 8bit pixel data
 210 //              eDebug("8bit pixel data!");
 211                 bitstream_init(&bit, data, 8);
 212                 while(1)
 213                 {
 214                         int len=0, col=0;
 215                         int code = bitstream_get(&bit);
 216                         if (code)
 217                         {
 218                                 col = code;
 219                                 len = 1;
 220                         } else
 221                         {
 222                                 code = bitstream_get(&bit);
 223                                 if ((code & 0x80) == 0x80)
 224                                 {
 225                                         len = code&0x7F;
 226                                         col = bitstream_get(&bit);
 227                                 } else if (code&0x7F)
 228                                 {
 229                                         len = code&0x7F;
 230                                         col = 0;
 231                                 } else
 232                                         break;
 233                         }
 234                         while (len && ((*linep) < m_display_size.width()))
 235                         {
 236                                 line[(*linep)++] = col;
 237                                 len--;
 238                         }
 239                 }
 240                 return bit.consumed + 1;
 241         case 0x20:
 242 //              eDebugNoNewLine("2 -> 4 bit table: ");
 243                 bitstream_init(&bit, data, 4);
 244                 for ( int i=0; i < 4; ++i )
 245                 {
 246                         map_2_to_4_bit_table[i] = bitstream_get(&bit);
 247 //                      eDebugNoNewLine("%d ", map_2_to_4_bit_table[i]);
 248                 }
 249                 eDebug("");
 250                 return bit.consumed + 1;
 251         case 0x21:
 252 //              eDebugNoNewLine("2 -> 8 bit table: ");
 253                 bitstream_init(&bit, data, 8);
 254                 for ( int i=0; i < 4; ++i )
 255                 {
 256                         map_2_to_8_bit_table[i] = bitstream_get(&bit);
 257 //                      eDebugNoNewLine("%d ", map_2_to_8_bit_table[i]);
 258                 }
 259                 return bit.consumed + 1;
 260         case 0x22:
 261 //              eDebug("4 -> 8 bit table!");
 262                 bitstream_init(&bit, data, 8);
 263                 for ( int i=0; i < 16; ++i )
 264                 {
 265                         map_4_to_8_bit_table[i] = bitstream_get(&bit);
 266 //                      eDebugNoNewLine("%d ", map_4_to_8_bit_table[i]);
 267                 }
 268                 return bit.consumed + 1;
 269         case 0xF0:
 270                 subtitle_process_line(region, object, *linenr, line, *linep);
 271 /*              {
 272                         int i;
 273                         for (i=0; i<m_display_size.width(); ++i)
 274                                 eDebugNoNewLine("%d ", line[i]);
 275                         eDebug("");
 276                 } */
 277                 (*linenr)+=2; // interlaced
 278                 *linep = 0;
 279 //              eDebug("[SUB] EOL");
 280                 return 1;
 281         default:
 282                 eDebug("subtitle_process_pixel_data: invalid data_type %02x", data_type);
 283                 return -1;
 284         }
 285         return 0;
 286 }
 287
 288 int eDVBSubtitleParser::subtitle_process_segment(__u8 *segment)
 289 {
 290         int segment_type, page_id, segment_length, processed_length;
 291         if (*segment++ !=  0x0F)
 292         {
 293                 eDebug("out of sync.");
 294                 return -1;
 295         }
 296         segment_type = *segment++;
 297         page_id  = *segment++ << 8;
 298         page_id |= *segment++;
 299         segment_length  = *segment++ << 8;
 300         segment_length |= *segment++;
 301         if (segment_type == 0xFF)
 302                 return segment_length + 6;
 303         if (page_id != m_composition_page_id && page_id != m_ancillary_page_id)
 304                 return segment_length + 6;
 305 //      eDebug("have %d bytes of segment data", segment_length);
 306
 307 //      eDebug("page_id %d, segtype %02x", page_id, segment_type);
 308
 309         subtitle_page *page, **ppage;
 310
 311         page = m_pages; ppage = &m_pages;
 312
 313         while (page)
 314         {
 315                 if (page->page_id == page_id)
 316                         break;
 317                 ppage = &page->next;
 318                 page = page->next;
 319         }
 320
 321         processed_length = 0;
 322
 323         switch (segment_type)
 324         {
 325         case 0x10: // page composition segment
 326         {
 327                 int page_time_out = *segment++; processed_length++;
 328                 int page_version_number = *segment >> 4;
 329                 int page_state = (*segment >> 2) & 0x3;
 330 //              eDebug("pcs with %d bytes data (%d:%d:%d)", segment_length, page_id, page_version_number, page_state);
 331                 segment++;
 332                 processed_length++;
 333
 334 //              eDebug("page time out: %d", page_time_out);
 335 //              eDebug("page_version_number: %d" ,page_version_number);
 336 //              eDebug("page_state: %d", page_state);
 337
 338                 if (!page)
 339                 {
 340 //                      eDebug("page not found");
 341                         page = new subtitle_page;
 342                         page->page_regions = 0;
 343                         page->regions = 0;
 344                         page->page_id = page_id;
 345                         page->cluts = 0;
 346                         page->next = 0;
 347                         *ppage = page;
 348                 } else
 349                 {
 350                         if (page->pcs_size != segment_length)
 351                                 page->page_version_number = -1;
 352                                 // if no update, just skip this data.
 353                         if (page->page_version_number == page_version_number)
 354                         {
 355 //                              eDebug("skip data... ");
 356                                 break;
 357                         }
 358                 }
 359
 360                 page->state = page_state;
 361
 362 //              eDebug("page updated: old: %d, new: %d", page->page_version_number, page_version_number);
 363                         // when acquisition point or mode change: remove all displayed pages.
 364                 if ((page_state == 1) || (page_state == 2))
 365                 {
 366                         while (page->page_regions)
 367                         {
 368                                 subtitle_page_region *p = page->page_regions->next;
 369 //                              eDebug("delete page_region %d", page->page_regions->region_id);
 370                                 delete page->page_regions;
 371                                 page->page_regions = p;
 372                         }
 373                         while (page->regions)
 374                         {
 375                                 subtitle_region *p = page->regions->next;
 376 //                              eDebug("delete region %d", page->regions->region_id);
 377                                 while(page->regions->objects)
 378                                 {
 379 //                                      eDebug("delete region object");
 380                                         subtitle_region_object *ob = page->regions->objects->next;
 381                                         delete page->regions->objects;
 382                                         page->regions->objects = ob;
 383                                 }
 384                                 delete page->regions;
 385                                 page->regions = p;
 386                         }
 387
 388                 }
 389
 390 //              eDebug("new page.. (%d)", page_state);
 391
 392                 page->page_time_out = page_time_out;
 393
 394                 page->page_version_number = page_version_number;
 395
 396                 subtitle_page_region **r = &page->page_regions;
 397
 398 //              eDebug("%d  / %d data left", processed_length, segment_length);
 399
 400                         // go to last entry
 401                 while (*r)
 402                         r = &(*r)->next;
 403
 404                 if (processed_length == segment_length && !page->page_regions)
 405                 {
 406 //                      eDebug("no regions in page.. clear screen!!");
 407                         subtitle_redraw(page->page_id);
 408                 }
 409
 410                 while (processed_length < segment_length)
 411                 {
 412                         subtitle_page_region *pr;
 413
 414                                 // append new entry to list
 415                         pr = new subtitle_page_region;
 416                         pr->next = 0;
 417                         *r = pr;
 418                         r = &pr->next;
 419
 420                         pr->region_id = *segment++; processed_length++;
 421                         segment++; processed_length++;
 422
 423                         pr->region_horizontal_address  = *segment++ << 8;
 424                         pr->region_horizontal_address |= *segment++;
 425                         processed_length += 2;
 426
 427                         pr->region_vertical_address  = *segment++ << 8;
 428                         pr->region_vertical_address |= *segment++;
 429                         processed_length += 2;
 430
 431 //                      eDebug("appended active region");
 432                 }
 433
 434                 if (processed_length != segment_length)
 435                         eDebug("%d != %d", processed_length, segment_length);
 436                 break;
 437         }
 438         case 0x11: // region composition segment
 439         {
 440                 int region_id = *segment++; processed_length++;
 441                 int version_number = *segment >> 4;
 442                 int region_fill_flag = (*segment >> 3) & 1;
 443                 segment++; processed_length++;
 444
 445                         // if we didn't yet received the pcs for this page, drop the region
 446                 if (!page)
 447                 {
 448                         eDebug("ignoring region %x, since page %02x doesn't yet exist.", region_id, page_id);
 449                         break;
 450                 }
 451
 452                 subtitle_region *region, **pregion;
 453
 454                 region = page->regions; pregion = &page->regions;
 455
 456                 while (region)
 457                 {
 458                         fflush(stdout);
 459                         if (region->region_id == region_id)
 460                                 break;
 461                         pregion = &region->next;
 462                         region = region->next;
 463                 }
 464
 465                 if (!region)
 466                 {
 467 //                      eDebug("create region !!!!!!!!!!");
 468                         *pregion = region = new subtitle_region;
 469                         region->next = 0;
 470                         region->committed = false;
 471                 }
 472                 else if (region->version_number != version_number)
 473                 {
 474                         subtitle_region_object *objects = region->objects;
 475 //                      eDebug("unequal version %p %p", objects, objects?objects->next:objects);
 476                         while (objects)
 477                         {
 478                                 subtitle_region_object *n = objects->next;
 479                                 delete objects;
 480                                 objects = n;
 481                         }
 482                         if (region->buffer)
 483                         {
 484 //                              eDebug("no more need of buffer %p", &(*region->buffer));
 485                                 region->buffer=0;
 486                         }
 487                         region->committed = false;
 488                 }
 489                 else
 490                         break;
 491
 492 //              eDebug("region %d:%d update", page_id, region_id);
 493
 494                 region->region_id = region_id;
 495                 region->version_number = version_number;
 496
 497                 region->width  = *segment++ << 8;
 498                 region->width |= *segment++;
 499                 processed_length += 2;
 500
 501                 region->height  = *segment++ << 8;
 502                 region->height |= *segment++;
 503                 processed_length += 2;
 504
 505                 region->buffer = new gPixmap(eSize(region->width, region->height), 8, 1);
 506                 memset(region->buffer->surface->data, 0, region->height * region->buffer->surface->stride);
 507 //              eDebug("new buffer %p", &(*region->buffer));
 508
 509                 int region_level_of_compatibility, depth;
 510
 511                 region_level_of_compatibility = (*segment >> 5) & 7;
 512                 depth = (*segment++ >> 2) & 7;
 513
 514                 region->depth = (subtitle_region::tDepth) depth;
 515                 processed_length++;
 516
 517                 int CLUT_id = *segment++; processed_length++;
 518
 519                 region->clut_id = CLUT_id;
 520
 521                 int region_8bit_pixel_code, region_4bit_pixel_code, region_2bit_pixel_code;
 522                 region_8bit_pixel_code = *segment++; processed_length++;
 523                 region_4bit_pixel_code = *segment >> 4;
 524                 region_2bit_pixel_code = (*segment++ >> 2) & 3;
 525                 processed_length++;
 526
 527                 if (!region_fill_flag)
 528                 {
 529                         region_2bit_pixel_code = region_4bit_pixel_code = region_8bit_pixel_code = 0;
 530                         region_fill_flag = 1;
 531                 }
 532
 533                 if (region_fill_flag)
 534                 {
 535 //                      eDebug("region fill buffer %p", &(*region->buffer));
 536                         if (depth == 1)
 537                                 memset(region->buffer->surface->data, region_2bit_pixel_code, region->height * region->width);
 538                         else if (depth == 2)
 539                                 memset(region->buffer->surface->data, region_4bit_pixel_code, region->height * region->width);
 540                         else if (depth == 3)
 541                                 memset(region->buffer->surface->data, region_8bit_pixel_code, region->height * region->width);
 542                         else
 543                                 eDebug("!!!! invalid depth");
 544                 }
 545
 546 //              eDebug("region %02x, version %d, %dx%d", region->region_id, region->version_number, region->width, region->height);
 547
 548                 region->objects = 0;
 549                 subtitle_region_object **pobject = &region->objects;
 550
 551                 while (processed_length < segment_length)
 552                 {
 553                         subtitle_region_object *object;
 554
 555                         object = new subtitle_region_object;
 556
 557                         *pobject = object;
 558                         object->next = 0;
 559                         pobject = &object->next;
 560
 561                         object->object_id  = *segment++ << 8;
 562                         object->object_id |= *segment++; processed_length += 2;
 563
 564                         object->object_type = *segment >> 6;
 565                         object->object_provider_flag = (*segment >> 4) & 3;
 566                         object->object_horizontal_position  = (*segment++ & 0xF) << 8;
 567                         object->object_horizontal_position |= *segment++;
 568                         processed_length += 2;
 569
 570                         object->object_vertical_position  = *segment++ << 8;
 571                         object->object_vertical_position |= *segment++ ;
 572                         processed_length += 2;
 573
 574                         if ((object->object_type == 1) || (object->object_type == 2))
 575                         {
 576                                 object->foreground_pixel_value = *segment++;
 577                                 object->background_pixel_value = *segment++;
 578                                 processed_length += 2;
 579                         }
 580                 }
 581
 582                 if (processed_length != segment_length)
 583                         eDebug("too less data! (%d < %d)", segment_length, processed_length);
 584
 585                 break;
 586         }
 587         case 0x12: // CLUT definition segment
 588         {
 589                 int CLUT_id, CLUT_version_number;
 590                 subtitle_clut *clut, **pclut;
 591
 592                 if (!page)
 593                         break;
 594
 595 //              eDebug("CLUT: %02x", *segment);
 596                 CLUT_id = *segment++;
 597
 598                 CLUT_version_number = *segment++ >> 4;
 599                 processed_length += 2;
 600
 601 //              eDebug("page %d, CLUT %02x, version %d", page->page_id, CLUT_id, CLUT_version_number);
 602
 603                 clut = page->cluts; pclut = &page->cluts;
 604
 605                 while (clut)
 606                 {
 607                         if (clut->clut_id == CLUT_id)
 608                                 break;
 609                         pclut = &clut->next;
 610                         clut = clut->next;
 611                 }
 612
 613                 if (!clut)
 614                 {
 615                         *pclut = clut = new subtitle_clut;
 616                         clut->next = 0;
 617                         clut->clut_id = CLUT_id;
 618                 }
 619                 else if (clut->CLUT_version_number == CLUT_version_number)
 620                         break;
 621
 622                 clut->CLUT_version_number=CLUT_version_number;
 623
 624                 memset(clut->entries_2bit, 0, sizeof(clut->entries_2bit));
 625                 memset(clut->entries_4bit, 0, sizeof(clut->entries_4bit));
 626                 memset(clut->entries_8bit, 0, sizeof(clut->entries_8bit));
 627
 628 //              eDebug("new Clut!");
 629                 while (processed_length < segment_length)
 630                 {
 631                         int CLUT_entry_id, entry_CLUT_flag, full_range;
 632                         int v_Y, v_Cr, v_Cb, v_T;
 633
 634                         CLUT_entry_id = *segment++;
 635                         full_range = *segment & 1;
 636                         entry_CLUT_flag = (*segment++ & 0xE0) >> 5;
 637                         processed_length += 2;
 638
 639                         if (full_range)
 640                         {
 641 //                              eDebugNoNewLine("f");
 642                                 v_Y  = *segment++;
 643                                 v_Cr = *segment++;
 644                                 v_Cb = *segment++;
 645                                 v_T  = *segment++;
 646                                 processed_length += 4;
 647                         } else
 648                         {
 649 //                              eDebugNoNewLine(" ");
 650                                 v_Y   = *segment & 0xFC;
 651                                 v_Cr  = (*segment++ & 3) << 6;
 652                                 v_Cr |= (*segment & 0xC0) >> 2;
 653                                 v_Cb  = (*segment & 0x3C) << 2;
 654                                 v_T   = (*segment++ & 3) << 6;
 655                                 processed_length += 2;
 656                         }
 657
 658                         if (entry_CLUT_flag & 1) // 8bit
 659                         {
 660 //                              eDebugNoNewLine("8b");
 661                                 clut->entries_8bit[CLUT_entry_id].Y = v_Y;
 662                                 clut->entries_8bit[CLUT_entry_id].Cr = v_Cr;
 663                                 clut->entries_8bit[CLUT_entry_id].Cb = v_Cb;
 664                                 clut->entries_8bit[CLUT_entry_id].T = v_T;
 665                                 clut->entries_8bit[CLUT_entry_id].valid = 1;
 666                         }
 667                         if (entry_CLUT_flag & 2) // 4bit
 668                         {
 669 //                              eDebugNoNewLine("4b");
 670                                 if (CLUT_entry_id < 16)
 671                                 {
 672                                         clut->entries_4bit[CLUT_entry_id].Y = v_Y;
 673                                         clut->entries_4bit[CLUT_entry_id].Cr = v_Cr;
 674                                         clut->entries_4bit[CLUT_entry_id].Cb = v_Cb;
 675                                         clut->entries_4bit[CLUT_entry_id].T = v_T;
 676                                         clut->entries_4bit[CLUT_entry_id].valid = 1;
 677                                 }
 678                                 else
 679                                         eDebug("CLUT entry marked as 4 bit with id %d (>15)", CLUT_entry_id);
 680                         }
 681                         if (entry_CLUT_flag & 4) // 2bit
 682                         {
 683 //                              eDebugNoNewLine("2b");
 684                                 if (CLUT_entry_id < 4)
 685                                 {
 686                                         clut->entries_2bit[CLUT_entry_id].Y = v_Y;
 687                                         clut->entries_2bit[CLUT_entry_id].Cr = v_Cr;
 688                                         clut->entries_2bit[CLUT_entry_id].Cb = v_Cb;
 689                                         clut->entries_2bit[CLUT_entry_id].T = v_T;
 690                                         clut->entries_2bit[CLUT_entry_id].valid = 1;
 691                                 }
 692                                 else
 693                                         eDebug("CLUT entry marked as 2 bit with id %d (>3)", CLUT_entry_id);
 694                         }
 695 //                      eDebug(" %04x %02x %02x %02x %02x", CLUT_entry_id, v_Y, v_Cb, v_Cr, v_T);
 696                 }
 697                 break;
 698         }
 699         case 0x13: // object data segment
 700         {
 701                 int object_id, object_version_number, object_coding_method, non_modifying_color_flag;
 702
 703                 object_id  = *segment++ << 8;
 704                 object_id |= *segment++;
 705                 processed_length += 2;
 706
 707                 object_version_number = *segment >> 4;
 708                 object_coding_method  = (*segment >> 2) & 3;
 709                 non_modifying_color_flag = (*segment++ >> 1) & 1;
 710                 processed_length++;
 711
 712 //              eDebug("object id %04x, version %d, object_coding_method %d (page_id %d)", object_id, object_version_number, object_coding_method, page_id);
 713                 subtitle_region *region = page->regions;
 714 //              eDebug("line for %d:%d", page->page_id, object_id);
 715                 while (region)
 716                 {
 717                         subtitle_region_object *object = region->objects;
 718                         while (object)
 719                         {
 720                                 if (object->object_id == object_id)
 721                                 {
 722                                         if (object_coding_method == 0)
 723                                         {
 724                                                 int top_field_data_blocklength, bottom_field_data_blocklength;
 725                                                 int i=1, line, linep;
 726
 727                                                 top_field_data_blocklength  = *segment++ << 8;
 728                                                 top_field_data_blocklength |= *segment++;
 729
 730                                                 bottom_field_data_blocklength  = *segment++ << 8;
 731                                                 bottom_field_data_blocklength |= *segment++;
 732 //                                              eDebug("%d / %d bytes", top_field_data_blocklength, bottom_field_data_blocklength);
 733                                                 processed_length += 4;
 734
 735                                                 // its working on cyfra channels.. but hmm in EN300743 the default table is 0, 7, 8, 15
 736                                                 map_2_to_4_bit_table[0] = 0;
 737                                                 map_2_to_4_bit_table[1] = 8;
 738                                                 map_2_to_4_bit_table[2] = 7;
 739                                                 map_2_to_4_bit_table[3] = 15;
 740
 741                                                 // this map is realy untested...
 742                                                 map_2_to_8_bit_table[0] = 0;
 743                                                 map_2_to_8_bit_table[1] = 0x88;
 744                                                 map_2_to_8_bit_table[2] = 0x77;
 745                                                 map_2_to_8_bit_table[3] = 0xff;
 746
 747                                                 map_4_to_8_bit_table[0] = 0;
 748                                                 for (; i < 16; ++i)
 749                                                         map_4_to_8_bit_table[i] = i * 0x11;
 750
 751                                                 i = 0;
 752                                                 line = 0;
 753                                                 linep = 0;
 754                                                 while (i < top_field_data_blocklength)
 755                                                 {
 756                                                         int len;
 757                                                         len = subtitle_process_pixel_data(region, object, &line, &linep, segment);
 758                                                         if (len < 0)
 759                                                                 return -1;
 760                                                         segment += len;
 761                                                         processed_length += len;
 762                                                         i += len;
 763                                                 }
 764
 765                                                 line = 1;
 766                                                 linep = 0;
 767
 768                                                 if (bottom_field_data_blocklength)
 769                                                 {
 770                                                         i = 0;
 771                                                         while (i < bottom_field_data_blocklength)
 772                                                         {
 773                                                                 int len;
 774                                                                 len = subtitle_process_pixel_data(region, object, &line, &linep, segment);
 775                                                                 if (len < 0)
 776                                                                         return -1;
 777                                                                 segment += len;
 778                                                                         processed_length += len;
 779                                                                 i += len;
 780                                                         }
 781                                                 }
 782                                                 else if (top_field_data_blocklength)
 783                                                         eDebug("!!!! unimplemented: no bottom field! (%d : %d)", top_field_data_blocklength, bottom_field_data_blocklength);
 784
 785                                                 if ((top_field_data_blocklength + bottom_field_data_blocklength) & 1)
 786                                                 {
 787                                                         segment++; processed_length++;
 788                                                 }
 789                                         }
 790                                         else if (object_coding_method == 1)
 791                                                 eDebug("---- object_coding_method 1 unsupported!");
 792                                 }
 793                                 object = object->next;
 794                         }
 795                         region = region->next;
 796                 }
 797                 break;
 798         }
 799         case 0x14: // display definition segment
 800         {
 801                 if (segment_length > 4)
 802                 {
 803                         int dds_version_number = segment[0] >> 4;
 804                         int display_window_flag = (segment[0] >> 3) & 1;
 805                         int display_width = (segment[1] << 8) | (segment[2]);
 806                         int display_height = (segment[3] << 8) | (segment[4]);
 807 //                      eDebug("version %d, window_flag %d, display_width %d, display_height %d",
 808 //                              dds_version_number, display_window_flag, display_width, display_height);
 809                         processed_length += 5;
 810                         m_display_size = eSize(display_width+1, display_height+1);
 811                         if (display_window_flag)
 812                         {
 813                                 if (segment_length > 12)
 814                                 {
 815                                         int display_window_horizontal_position_min = (segment[4] << 8) | segment[5];
 816                                         int display_window_horizontal_position_max = (segment[6] << 8) | segment[7];
 817                                         int display_window_vertical_position_min = (segment[8] << 8) | segment[9];
 818                                         int display_window_vertical_position_max = (segment[10] << 8) | segment[11];
 819                                         eDebug("NYI hpos min %d, hpos max %d, vpos min %d, vpos max %d",
 820                                                 display_window_horizontal_position_min,
 821                                                 display_window_horizontal_position_max,
 822                                                 display_window_vertical_position_min,
 823                                                 display_window_vertical_position_max);
 824                                         processed_length += 8;
 825                                 }
 826                                 else
 827                                         eDebug("display window flag set but display definition segment to short %d!", segment_length);
 828                         }
 829                 }
 830                 else
 831                         eDebug("display definition segment to short %d!", segment_length);
 832                 break;
 833         }
 834         case 0x80: // end of display set segment
 835         {
 836 //              eDebug("end of display set segment");
 837                 subtitle_redraw_all();
 838                 m_seen_eod = true;
 839         }
 840         case 0xFF: // stuffing
 841                 break;
 842         default:
 843                 eDebug("unhandled segment type %02x", segment_type);
 844         }
 845
 846         return segment_length + 6;
 847 }
 848
 849 void eDVBSubtitleParser::subtitle_process_pes(__u8 *pkt, int len)
 850 {
 851 //      eDebugNoNewLine("subtitle_process_pes");
 852         if (!extract_pts(m_show_time, pkt))
 853         {
 854 //              eDebug(" %lld", m_show_time);
 855                 pkt += 6; len -= 6;
 856                 // skip PES header
 857                 pkt++; len--;
 858                 pkt++; len--;
 859
 860                 int hdr_len = *pkt++; len--;
 861
 862                 pkt+=hdr_len; len-=hdr_len;
 863
 864                 if (*pkt != 0x20)
 865                 {
 866 //                      eDebug("data identifier is 0x%02x, but not 0x20", *pkt);
 867                         return;
 868                 }
 869                 pkt++; len--; // data identifier
 870                 *pkt++; len--; // stream id;
 871
 872                 if (len <= 0)
 873                 {
 874 //                      eDebug("no data left (%d)", len);
 875                         return;
 876                 }
 877
 878                 m_seen_eod = false;
 879
 880                 while (len && *pkt == 0x0F)
 881                 {
 882                         int l = subtitle_process_segment(pkt);
 883                         if (l < 0)
 884                                 break;
 885                         pkt += l;
 886                         len -= l;
 887                 }
 888
 889                 if (len && *pkt != 0xFF)
 890                         eDebug("strange data at the end");
 891
 892                 if (!m_seen_eod)
 893                         subtitle_redraw_all();
 894         }
 895 //      else
 896 //              eDebug("");
 897 }
 898
 899 void eDVBSubtitleParser::subtitle_redraw_all()
 900 {
 901 #if 1
 902         subtitle_page *page = m_pages;
 903         while(page)
 904         {
 905                 if (page->state != 0)
 906                         subtitle_redraw(page->page_id);
 907                 page = page->next;
 908         }
 909 #else
 910         subtitle_page *page = m_pages;
 911         eDebug("----------- end of display set");
 912         eDebug("active pages:");
 913         while (page)
 914         {
 915                 eDebug("  page_id %02x", page->page_id);
 916                 eDebug("  page_version_number: %d", page->page_version_number);
 917                 eDebug("  active regions:");
 918                 {
 919                         subtitle_page_region *region = page->page_regions;
 920                         while (region)
 921                         {
 922                                 eDebug("    region_id: %04x", region->region_id);
 923                                 eDebug("    region_horizontal_address: %d", region->region_horizontal_address);
 924                                 eDebug("    region_vertical_address: %d", region->region_vertical_address);
 925
 926                                 region = region->next;
 927                         }
 928                 }
 929
 930                 subtitle_redraw(page->page_id);
 931                 eDebug("defined regions:");
 932                 subtitle_region *region = page->regions;
 933                 while (region)
 934                 {
 935                         eDebug("  region_id %04x, version %d, %dx%d", region->region_id, region->version_number, region->width, region->height);
 936
 937                         subtitle_region_object *object = region->objects;
 938                         while (object)
 939                         {
 940                                 eDebug("  object %02x, type %d, %d:%d", object->object_id, object->object_type, object->object_horizontal_position, object->object_vertical_position);
 941                                 object = object->next;
 942                         }
 943                         region = region->next;
 944                 }
 945                 page = page->next;
 946         }
 947 #endif
 948 }
 949
 950 void eDVBSubtitleParser::subtitle_reset()
 951 {
 952         while (subtitle_page *page = m_pages)
 953         {
 954                         /* free page regions */
 955                 while (page->page_regions)
 956                 {
 957                         subtitle_page_region *p = page->page_regions->next;
 958                         delete page->page_regions;
 959                         page->page_regions = p;
 960                 }
 961                         /* free regions */
 962                 while (page->regions)
 963                 {
 964                         subtitle_region *region = page->regions;
 965
 966                         while (region->objects)
 967                         {
 968                                 subtitle_region_object *obj = region->objects;
 969                                 region->objects = obj->next;
 970                                 delete obj;
 971                         }
 972
 973                         if (region->buffer)
 974                         {
 975 //                              eDebug("no more need of buffer 2 %p", &(*region->buffer));
 976                                 region->buffer=0;
 977                         }
 978
 979                         page->regions = region->next;
 980                         delete region;
 981                 }
 982
 983                         /* free CLUTs */
 984                 while (page->cluts)
 985                 {
 986                         subtitle_clut *clut = page->cluts;
 987                         page->cluts = clut->next;
 988                         delete clut;
 989                 }
 990
 991                 m_pages = page->next;
 992                 delete page;
 993         }
 994 }
 995
 996 void eDVBSubtitleParser::subtitle_redraw(int page_id)
 997 {
 998         subtitle_page *page = m_pages;
 999
1000 //      eDebug("displaying page id %d", page_id);
1001
1002         while (page)
1003         {
1004                 if (page->page_id == page_id)
1005                         break;
1006                 page = page->next;
1007         }
1008         if (!page)
1009         {
1010 //              eDebug("page not found");
1011                 return;
1012         }
1013
1014 //      eDebug("iterating regions..");
1015                 /* iterate all regions in this pcs */
1016         subtitle_page_region *region = page->page_regions;
1017
1018         eDVBSubtitlePage Page;
1019         Page.m_show_time = m_show_time;
1020         for (; region; region=region->next)
1021         {
1022 //              eDebug("region %d", region->region_id);
1023                         /* find corresponding region */
1024                 subtitle_region *reg = page->regions;
1025                 while (reg)
1026                 {
1027                         if (reg->region_id == region->region_id)
1028                                 break;
1029                         reg = reg->next;
1030                 }
1031                 if (reg)
1032                 {
1033                         if (reg->committed)
1034                                 continue;
1035 //                      eDebug("copy region %d to %d, %d", region->region_id, region->region_horizontal_address, region->region_vertical_address);
1036
1037                         int x0 = region->region_horizontal_address;
1038                         int y0 = region->region_vertical_address;
1039
1040                         if ((x0 < 0) || (y0 < 0))
1041                         {
1042 //                              eDebug("x0 %d, y0 %d", x0, y0);
1043                                 continue;
1044                         }
1045
1046                         /* find corresponding clut */
1047                         subtitle_clut *clut = page->cluts;
1048                         while (clut)
1049                         {
1050 //                              eDebug("have %d, want %d", clut->clut_id, main_clut_id);
1051                                 if (clut->clut_id == reg->clut_id)
1052                                         break;
1053                                 clut = clut->next;
1054                         }
1055
1056                         int clut_size = reg->buffer->surface->clut.colors = reg->depth == subtitle_region::bpp2 ?
1057                                 4 : reg->depth == subtitle_region::bpp4 ? 16 : 256;
1058
1059                         reg->buffer->surface->clut.data = new gRGB[clut_size];
1060 //                      eDebug("create clut data for buffer %p", &(*reg->buffer));
1061
1062                         gRGB *palette = reg->buffer->surface->clut.data;
1063
1064 //                      if (!clut)
1065 //                              eDebug("no CLUT.. use default");
1066
1067                         subtitle_clut_entry *entries=0;
1068                         switch(reg->depth)
1069                         {
1070                                 case subtitle_region::bpp2:
1071 //                                      eDebug("2BPP");
1072                                         if (clut)
1073                                                 entries = clut->entries_2bit;
1074                                         memset(palette, 0, 4 * sizeof(gRGB));
1075                                         // this table is tested on cyfra .. but in EN300743 the table palette[2] and palette[1] is swapped.. i dont understand this ;)
1076                                         palette[0].a = 0xFF;
1077                                         palette[2].r = palette[2].g = palette[2].b = 0xFF;
1078                                         palette[3].r = palette[3].g = palette[3].b = 0x80;
1079                                         break;
1080                                 case subtitle_region::bpp4: // tested on cyfra... but the map is another in EN300743... dont understand this...
1081 //                                      eDebug("4BPP");
1082                                         if (clut)
1083                                                 entries = clut->entries_4bit;
1084                                         memset(palette, 0, 16*sizeof(gRGB));
1085                                         for (int i=0; i < 16; ++i)
1086                                         {
1087                                                 if (!i)
1088                                                         palette[i].a = 0xFF;
1089                                                 else if (i & 8)
1090                                                 {
1091                                                         if (i & 1)
1092                                                                 palette[i].r = 0x80;
1093                                                         if (i & 2)
1094                                                                 palette[i].g = 0x80;
1095                                                         if (i & 4)
1096                                                                 palette[i].b = 0x80;
1097                                                 }
1098                                                 else
1099                                                 {
1100                                                         if (i & 1)
1101                                                                 palette[i].r = 0xFF;
1102                                                         if (i & 2)
1103                                                                 palette[i].g = 0xFF;
1104                                                         if (i & 4)
1105                                                                 palette[i].b = 0xFF;
1106                                                 }
1107                                         }
1108                                         break;
1109                                 case subtitle_region::bpp8:  // completely untested.. i never seen 8bit DVB subtitles
1110 //                                      eDebug("8BPP");
1111                                         if (clut)
1112                                                 entries = clut->entries_8bit;
1113                                         memset(palette, 0, 256*sizeof(gRGB));
1114                                         for (int i=0; i < 256; ++i)
1115                                         {
1116                                                 switch (i & 17)
1117                                                 {
1118                                                 case 0: // b1 == 0 && b5 == 0
1119                                                         if (!(i & 14)) // b2 == 0 && b3 == 0 && b4 == 0
1120                                                         {
1121                                                                 if (!(i & 224)) // b6 == 0 && b7 == 0 && b8 == 0
1122                                                                         palette[i].a = 0xFF;
1123                                                                 else
1124                                                                 {
1125                                                                         if (i & 128) // R = 100% x b8
1126                                                                                 palette[i].r = 0xFF;
1127                                                                         if (i & 64) // G = 100% x b7
1128                                                                                 palette[i].g = 0xFF;
1129                                                                         if (i & 32) // B = 100% x b6
1130                                                                                 palette[i].b = 0xFF;
1131                                                                         palette[i].a = 0xBF; // T = 75%
1132                                                                 }
1133                                                                 break;
1134                                                         }
1135                                                         // fallthrough !!
1136                                                 case 16: // b1 == 0 && b5 == 1
1137                                                         if (i & 128) // R = 33% x b8
1138                                                                 palette[i].r = 0x55;
1139                                                         if (i & 64) // G = 33% x b7
1140                                                                 palette[i].g = 0x55;
1141                                                         if (i & 32) // B = 33% x b6
1142                                                                 palette[i].b = 0x55;
1143                                                         if (i & 8) // R + 66,7% x b4
1144                                                                 palette[i].r += 0xAA;
1145                                                         if (i & 4) // G + 66,7% x b3
1146                                                                 palette[i].g += 0xAA;
1147                                                         if (i & 2) // B + 66,7% x b2
1148                                                                 palette[i].b += 0xAA;
1149                                                         if (i & 16) // needed for fall through from case 0!!
1150                                                                 palette[i].a = 0x80; // T = 50%
1151                                                         break;
1152                                                 case 1: // b1 == 1 && b5 == 0
1153                                                         palette[i].r =
1154                                                         palette[i].g =
1155                                                         palette[i].b = 0x80; // 50%
1156                                                         // fall through!!
1157                                                 case 17: // b1 == 1 && b5 == 1
1158                                                         if (i & 128) // R += 16.7% x b8
1159                                                                 palette[i].r += 0x2A;
1160                                                         if (i & 64) // G += 16.7% x b7
1161                                                                 palette[i].g += 0x2A;
1162                                                         if (i & 32) // B += 16.7% x b6
1163                                                                 palette[i].b += 0x2A;
1164                                                         if (i & 8) // R += 33% x b4
1165                                                                 palette[i].r += 0x55;
1166                                                         if (i & 4) // G += 33% x b3
1167                                                                 palette[i].g += 0x55;
1168                                                         if (i & 2) // B += 33% x b2
1169                                                                 palette[i].b += 0x55;
1170                                                         break;
1171                                                 }
1172                                         }
1173                                         break;
1174                         }
1175
1176                         for (int i=0; i<clut_size; ++i)
1177                         {
1178                                 if (entries && entries[i].valid)
1179                                 {
1180                                         int y = entries[i].Y,
1181                                                 cr = entries[i].Cr,
1182                                                 cb = entries[i].Cb;
1183                                         if (y > 0)
1184                                         {
1185                                                 y -= 16;
1186                                                 cr -= 128;
1187                                                 cb -= 128;
1188                                                 palette[i].r = MAX(MIN(((298 * y            + 460 * cr) / 256), 255), 0);
1189                                                 palette[i].g = MAX(MIN(((298 * y -  55 * cb - 137 * cr) / 256), 255), 0);
1190                                                 palette[i].b = MAX(MIN(((298 * y + 543 * cb           ) / 256), 255), 0);
1191                                                 palette[i].a = (entries[i].T) & 0xFF;
1192 //                                              eDebug("override clut entry %d RGBA %02x%02x%02x%02x", i,
1193 //                                                      palette[i].r, palette[i].g, palette[i].b, palette[i].a);
1194                                         }
1195                                         else
1196                                         {
1197 //                                              eDebug("mist %d: y %d cr %d cb %d", i, y, cr, cb);
1198                                                 palette[i].r = 0;
1199                                                 palette[i].g = 0;
1200                                                 palette[i].b = 0;
1201                                                 palette[i].a = 0xFF;
1202                                         }
1203                                 }
1204 //                              eDebug("%d:%c %02x %02x %02x %02x",
1205 //                                      i, entries && entries[i].valid ? 'O': 'D', palette[i].r, palette[i].g, palette[i].b, palette[i].a);
1206                         }
1207
1208 //                      eDebug("commit buffer %p", &(*reg->buffer));
1209                         eDVBSubtitleRegion Region;
1210                         Region.m_pixmap = reg->buffer;
1211                         Region.m_position.setX(x0);
1212                         Region.m_position.setY(y0);
1213                         Page.m_regions.push_back(Region);
1214                         reg->committed = true;
1215                 }
1216 //              else
1217 //                      eDebug("region not found");
1218         }
1219         Page.m_display_size = m_display_size;
1220         m_new_subtitle_page(Page);
1221         Page.m_regions.clear();
1222 //      eDebug("page timeout is %d", page->page_time_out);
1223 //      Page.m_show_time += (page->page_time_out * 90000);
1224 //      m_new_subtitle_page(Page);
1225 //      eDebug("schon gut.");
1226 }
1227
1228 DEFINE_REF(eDVBSubtitleParser);
1229
1230 eDVBSubtitleParser::eDVBSubtitleParser(iDVBDemux *demux)
1231         :m_pages(0), m_display_size(720,576)
1232 {
1233         setStreamID(0xBD);
1234
1235         if (demux->createPESReader(eApp, m_pes_reader))
1236                 eDebug("failed to create dvb subtitle PES reader!");
1237         else
1238                 m_pes_reader->connectRead(slot(*this, &eDVBSubtitleParser::processData), m_read_connection);
1239 }
1240
1241 eDVBSubtitleParser::~eDVBSubtitleParser()
1242 {
1243         subtitle_reset();
1244 }
1245
1246 int eDVBSubtitleParser::stop()
1247 {
1248         if (m_pes_reader)
1249         {
1250                 eDebug("disable dvb subtitles");
1251                 return m_pes_reader->stop();
1252         }
1253         return -1;
1254 }
1255
1256 int eDVBSubtitleParser::start(int pid, int composition_page_id, int ancillary_page_id)
1257 {
1258         if (m_pes_reader)
1259         {
1260                 eDebug("start dvb subtitles on pid 0x%04x with composition_page_id %d and ancillary_page_id %d",
1261                         pid, composition_page_id, ancillary_page_id);
1262                 m_composition_page_id = composition_page_id;
1263                 m_ancillary_page_id = ancillary_page_id;
1264                 return m_pes_reader->start(pid);
1265         }
1266         return -1;
1267 }
1268
1269 void eDVBSubtitleParser::connectNewPage(const Slot1<void, const eDVBSubtitlePage&> &slot, ePtr<eConnection> &connection)
1270 {
1271         connection = new eConnection(this, m_new_subtitle_page.connect(slot));
1272 }