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