code.vuplus.com Git - vuplus_dvbapp/blob - 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                                 memcpy((__u8*)region->region_buffer->surface->data + region->region_width * y + x, data, len);
  84                         }
  85                         object = object->next;
  86                 }
  87                 region = region->next;
  88         }
  89 }
  90
  91 int eDVBSubtitleParser::subtitle_process_pixel_data(subtitle_page *page, int object_id, int *linenr, int *linep, __u8 *data)
  92 {
  93         int data_type = *data++;
  94         static __u8 line[720];
  95
  96         bitstream bit;
  97         bit.size=0;
  98         switch (data_type)
  99         {
 100         case 0x10: // 2bit pixel data
 101                 bitstream_init(&bit, data, 2);
 102                 while (1)
 103                 {
 104                         int len=0, col=0;
 105                         int code = bitstream_get(&bit);
 106                         if (code)
 107                         {
 108                                 col = code;
 109                                 len = 1;
 110                         } else
 111                         {
 112                                 code = bitstream_get(&bit);
 113                                 if (!code)
 114                                 {
 115                                         code = bitstream_get(&bit);
 116                                         if (code == 1)
 117                                         {
 118                                                 col = 0;
 119                                                 len = 2;
 120                                         } else if (code == 2)
 121                                         {
 122                                                 len = bitstream_get(&bit) << 2;
 123                                                 len |= bitstream_get(&bit);
 124                                                 len += 12;
 125                                                 col = bitstream_get(&bit);
 126                                         } else if (code == 3)
 127                                         {
 128                                                 len = bitstream_get(&bit) << 6;
 129                                                 len |= bitstream_get(&bit) << 4;
 130                                                 len |= bitstream_get(&bit) << 2;
 131                                                 len |= bitstream_get(&bit);
 132                                                 len += 29;
 133                                                 col = bitstream_get(&bit);
 134                                         } else
 135                                                 break;
 136                                 } else if (code==1)
 137                                 {
 138                                         col = 0;
 139                                         len = 1;
 140                                 } else if (code&2)
 141                                 {
 142                                         if (code&1)
 143                                                 len = 3 + 4 + bitstream_get(&bit);
 144                                         else
 145                                                 len = 3 + bitstream_get(&bit);
 146                                         col = bitstream_get(&bit);
 147                                 }
 148                         }
 149                         while (len && ((*linep) < 720))
 150                         {
 151                                 line[(*linep)++] = col;
 152                                 len--;
 153                         }
 154                 }
 155                 while (bit.avail != 8)
 156                         bitstream_get(&bit);
 157                 return bit.consumed + 1;
 158         case 0x11: // 4bit pixel data
 159                 bitstream_init(&bit, data, 4);
 160                 while (1)
 161                 {
 162                         int len=0, col=0;
 163                         int code = bitstream_get(&bit);
 164                         if (code)
 165                         {
 166                                 col = code;
 167                                 len = 1;
 168                         } else
 169                         {
 170                                 code = bitstream_get(&bit);
 171                                 if (!code)
 172                                         break;
 173                                 else if (code == 0xC)
 174                                 {
 175                                         col = 0;
 176                                         len = 1;
 177                                 } else if (code == 0xD)
 178                                 {
 179                                         col = 0;
 180                                         len = 2;
 181                                 } else if (code < 8)
 182                                 {
 183                                         col = 0;
 184                                         len = (code & 7) + 2;
 185                                 } else if ((code & 0xC) == 0x8)
 186                                 {
 187                                         col = bitstream_get(&bit);
 188                                         len = (code & 3) + 4;
 189                                 } else if (code == 0xE)
 190                                 {
 191                                         len = bitstream_get(&bit) + 9;
 192                                         col = bitstream_get(&bit);
 193                                 } else if (code == 0xF)
 194                                 {
 195                                         len  = bitstream_get(&bit) << 4;
 196                                         len |= bitstream_get(&bit);
 197                                         len += 25;
 198                                         col  = bitstream_get(&bit);
 199                                 }
 200                         }
 201                         while (len && ((*linep) < 720))
 202                         {
 203                                 line[(*linep)++] = col;
 204                                 len--;
 205                         }
 206                 }
 207                 while (bit.avail != 8)
 208                         bitstream_get(&bit);
 209                 return bit.consumed + 1;
 210         case 0x12: // 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) < 720))
 235                         {
 236                                 line[(*linep)++] = col;
 237                                 len--;
 238                         }
 239                 }
 240                 return bit.consumed + 1;
 241         case 0x20:  // ignore 2 -> 4bit map table
 242                 bitstream_init(&bit, data, 4);
 243                 for ( int i=0; i < 4; ++i )
 244                         bitstream_get(&bit);
 245                 break;
 246         case 0x21:  // ignore 2 -> 8bit map table
 247                 bitstream_init(&bit, data, 8);
 248                 for ( int i=0; i < 4; ++i )
 249                         bitstream_get(&bit);
 250                 break;
 251         case 0x22:  // ignore 4 -> 8bit map table
 252                 bitstream_init(&bit, data, 8);
 253                 for ( int i=0; i < 16; ++i )
 254                         bitstream_get(&bit);
 255                 break;
 256         case 0xF0:
 257                 subtitle_process_line(page, object_id, *linenr, line, *linep);
 258 /*              {
 259                         int i;
 260                         for (i=0; i<720; ++i)
 261                                 //eDebugNoNewLine("%d ", line[i]);
 262                         //eDebug("");
 263                 } */
 264                 (*linenr)+=2; // interlaced
 265                 *linep = 0;
 266 //              //eDebug("[SUB] EOL");
 267                 return 1;
 268         default:
 269                 eDebug("subtitle_process_pixel_data: invalid data_type %02x", data_type);
 270                 return -1;
 271         }
 272         return 0;
 273 }
 274
 275 int eDVBSubtitleParser::subtitle_process_segment(__u8 *segment)
 276 {
 277         int segment_type, page_id, segment_length, processed_length;
 278         if (*segment++ !=  0x0F)
 279         {
 280                 eDebug("out of sync.");
 281                 return -1;
 282         }
 283         segment_type = *segment++;
 284         page_id  = *segment++ << 8;
 285         page_id |= *segment++;
 286         segment_length  = *segment++ << 8;
 287         segment_length |= *segment++;
 288         if (segment_type == 0xFF)
 289                 return segment_length + 6;
 290 //      //eDebug("have %d bytes of segment data", segment_length);
 291
 292 //      //eDebug("page_id %d, segtype %02x", page_id, segment_type);
 293
 294         subtitle_page *page, **ppage;
 295
 296         page = this->pages; ppage = &this->pages;
 297
 298         while (page)
 299         {
 300                 if (page->page_id == page_id)
 301                         break;
 302                 ppage = &page->next;
 303                 page = page->next;
 304         }
 305
 306         processed_length = 0;
 307
 308         switch (segment_type)
 309         {
 310         case 0x10: // page composition segment
 311         {
 312                 int page_time_out = *segment++; processed_length++;
 313                 int page_version_number = *segment >> 4;
 314                 int page_state = (*segment >> 2) & 0x3;
 315                 //eDebug("pcs with %d bytes data (%d:%d:%d)", segment_length, page_id, page_version_number, page_state);
 316                 segment++;
 317                 processed_length++;
 318
 319                 //eDebug("page time out: %d", page_time_out);
 320                 //eDebug("page_version_number: %d" ,page_version_number);
 321                 //eDebug("page_state: %d", page_state);
 322
 323                 if (!page)
 324                 {
 325                         //eDebug("page not found");
 326                         page = new subtitle_page;
 327                         page->page_regions = 0;
 328                         page->regions = 0;
 329                         page->page_id = page_id;
 330                         page->cluts = 0;
 331                         page->next = 0;
 332                         *ppage = page;
 333                 } else
 334                 {
 335                         if (page->pcs_size != segment_length)
 336                                 page->page_version_number = -1;
 337                                 // if no update, just skip this data.
 338                         if (page->page_version_number == page_version_number)
 339                         {
 340                                 eDebug("skip data... ");
 341                                 break;
 342                         }
 343                 }
 344
 345 //              eDebug("page updated: old: %d, new: %d", page->page_version_number, page_version_number);
 346                         // when acquisition point or mode change: remove all displayed pages.
 347                 if ((page_state == 1) || (page_state == 2))
 348                 {
 349                         while (page->page_regions)
 350                         {
 351                                 subtitle_page_region *p = page->page_regions->next;
 352                                 delete page->page_regions;
 353                                 page->page_regions = p;
 354                         }
 355                 }
 356
 357 //              eDebug("new page.. (%d)", page_state);
 358
 359                 page->page_time_out = page_time_out;
 360
 361                 page->page_version_number = page_version_number;
 362
 363                 subtitle_page_region **r = &page->page_regions;
 364
 365                 //eDebug("%d  / %d data left", processed_length, segment_length);
 366
 367                         // go to last entry
 368                 while (*r)
 369                         r = &(*r)->next;
 370
 371                 while (processed_length < segment_length)
 372                 {
 373                         subtitle_page_region *pr;
 374
 375                                 // append new entry to list
 376                         pr = new subtitle_page_region;
 377                         pr->next = 0;
 378                         *r = pr;
 379                         r = &pr->next;
 380
 381                         pr->region_id = *segment++; processed_length++;
 382                         segment++; processed_length++;
 383
 384                         pr->region_horizontal_address  = *segment++ << 8;
 385                         pr->region_horizontal_address |= *segment++;
 386                         processed_length += 2;
 387
 388                         pr->region_vertical_address  = *segment++ << 8;
 389                         pr->region_vertical_address |= *segment++;
 390                         processed_length += 2;
 391
 392                         //eDebug("appended active region");
 393                 }
 394
 395                 if (processed_length != segment_length)
 396                         eDebug("%d != %d", processed_length, segment_length);
 397                 break;
 398         }
 399         case 0x11: // region composition segment
 400         {
 401                 int region_id = *segment++; processed_length++;
 402                 int region_version_number = *segment >> 4;
 403                 int region_fill_flag = (*segment >> 3) & 1;
 404                 segment++; processed_length++;
 405
 406                         // if we didn't yet received the pcs for this page, drop the region
 407                 if (!page)
 408                 {
 409                         eDebug("ignoring region %x, since page %02x doesn't yet exist.", region_id, page_id);
 410                         break;
 411                 }
 412
 413                 subtitle_region *region, **pregion;
 414
 415                 region = page->regions; pregion = &page->regions;
 416
 417                 while (region)
 418                 {
 419                         fflush(stdout);
 420                         if (region->region_id == region_id)
 421                                 break;
 422                         pregion = &region->next;
 423                         region = region->next;
 424                 }
 425
 426                 if (!region)
 427                 {
 428                         *pregion = region = new subtitle_region;
 429                         region->next = 0;
 430                 }
 431                 else if (region->region_version_number != region_version_number)
 432                 {
 433                         subtitle_region_object *objects = region->region_objects;
 434                         while (objects)
 435                         {
 436                                 subtitle_region_object *n = objects->next;
 437                                 delete objects;
 438                                 objects = n;
 439                         }
 440                         if (region->region_buffer)
 441                         {
 442                                 if (region->region_buffer->surface)
 443                                         delete region->region_buffer->surface;
 444                                 region->region_buffer=0;
 445                         }
 446                 }
 447                 else
 448                         break;
 449
 450                 //eDebug("region %d:%d update", page_id, region_id);
 451
 452                 region->region_id = region_id;
 453                 region->region_version_number = region_version_number;
 454
 455                 region->region_width  = *segment++ << 8;
 456                 region->region_width |= *segment++;
 457                 processed_length += 2;
 458
 459                 region->region_height  = *segment++ << 8;
 460                 region->region_height |= *segment++;
 461                 processed_length += 2;
 462
 463                 region->region_buffer = new gPixmap(eSize(region->region_width, region->region_height), 8);
 464
 465                 int region_level_of_compatibility, region_depth;
 466
 467                 region_level_of_compatibility = (*segment >> 5) & 7;
 468                 region_depth = (*segment++ >> 2) & 7;
 469                 region->region_depth = (subtitle_region::depth) region_depth;
 470                 processed_length++;
 471
 472                 int CLUT_id = *segment++; processed_length++;
 473
 474                 region->clut_id = CLUT_id;
 475
 476                 int region_8bit_pixel_code, region_4bit_pixel_code, region_2bit_pixel_code;
 477                 region_8bit_pixel_code = *segment++; processed_length++;
 478                 region_4bit_pixel_code = *segment >> 4;
 479                 region_2bit_pixel_code = (*segment++ >> 2) & 3;
 480                 processed_length++;
 481
 482                 if (!region_fill_flag)
 483                 {
 484                         region_2bit_pixel_code = region_4bit_pixel_code = region_8bit_pixel_code = 0;
 485                         region_fill_flag = 1;
 486                 }
 487
 488                 if (region_fill_flag)
 489                 {
 490                         if (region_depth == 1)
 491                                 memset(region->region_buffer->surface->data, region_2bit_pixel_code, region->region_height * region->region_width);
 492                         else if (region_depth == 2)
 493                                 memset(region->region_buffer->surface->data, region_4bit_pixel_code, region->region_height * region->region_width);
 494                         else if (region_depth == 3)
 495                                 memset(region->region_buffer->surface->data, region_8bit_pixel_code, region->region_height * region->region_width);
 496                         else
 497                                 eDebug("!!!! invalid depth");
 498                 }
 499
 500                 //eDebug("region %02x, version %d, %dx%d", region->region_id, region->region_version_number, region->region_width, region->region_height);
 501
 502                 region->region_objects = 0;
 503                 subtitle_region_object **pobject = &region->region_objects;
 504
 505                 while (processed_length < segment_length)
 506                 {
 507                         subtitle_region_object *object;
 508
 509                         object = new subtitle_region_object;
 510
 511                         *pobject = object;
 512                         object->next = 0;
 513                         pobject = &object->next;
 514
 515                         object->object_id  = *segment++ << 8;
 516                         object->object_id |= *segment++; processed_length += 2;
 517
 518                         object->object_type = *segment >> 6;
 519                         object->object_provider_flag = (*segment >> 4) & 3;
 520                         object->object_horizontal_position  = (*segment++ & 0xF) << 8;
 521                         object->object_horizontal_position |= *segment++;
 522                         processed_length += 2;
 523
 524                         object->object_vertical_position  = *segment++ << 8;
 525                         object->object_vertical_position |= *segment++ ;
 526                         processed_length += 2;
 527
 528                         if ((object->object_type == 1) || (object->object_type == 2))
 529                         {
 530                                 object->foreground_pixel_value = *segment++;
 531                                 object->background_pixel_value = *segment++;
 532                                 processed_length += 2;
 533                         }
 534                 }
 535
 536                 if (processed_length != segment_length)
 537                         eDebug("too less data! (%d < %d)", segment_length, processed_length);
 538
 539                 break;
 540         }
 541         case 0x12: // CLUT definition segment
 542         {
 543                 int CLUT_id, CLUT_version_number;
 544                 subtitle_clut *clut, **pclut;
 545
 546                 if (!page)
 547                         break;
 548
 549                 //eDebug("CLUT: %02x", *segment);
 550                 CLUT_id = *segment++;
 551
 552                 CLUT_version_number = *segment++ >> 4;
 553                 processed_length += 2;
 554
 555                 //eDebug("page %d, CLUT %02x, version %d", page->page_id, CLUT_id, CLUT_version_number);
 556
 557                 clut = page->cluts; pclut = &page->cluts;
 558
 559                 while (clut)
 560                 {
 561                         if (clut->clut_id == CLUT_id)
 562                                 break;
 563                         pclut = &clut->next;
 564                         clut = clut->next;
 565                 }
 566
 567                 if (!clut)
 568                 {
 569                         *pclut = clut = new subtitle_clut;
 570                         clut->next = 0;
 571                         clut->clut_id = CLUT_id;
 572                 }
 573                 else if (clut->CLUT_version_number == CLUT_version_number)
 574                         break;
 575
 576                 clut->CLUT_version_number=CLUT_version_number;
 577
 578                 memset(clut->entries_2bit, 0, sizeof(clut->entries_2bit));
 579                 memset(clut->entries_4bit, 0, sizeof(clut->entries_4bit));
 580                 memset(clut->entries_8bit, 0, sizeof(clut->entries_8bit));
 581
 582                 //eDebug("new clut");
 583                 while (processed_length < segment_length)
 584                 {
 585                         int CLUT_entry_id, entry_CLUT_flag, full_range;
 586                         int v_Y, v_Cr, v_Cb, v_T;
 587
 588                         CLUT_entry_id = *segment++;
 589                         full_range = *segment & 1;
 590                         entry_CLUT_flag = (*segment++ & 0xE0) >> 5;
 591                         processed_length += 2;
 592
 593                         if (full_range)
 594                         {
 595                                 v_Y  = *segment++;
 596                                 v_Cr = *segment++;
 597                                 v_Cb = *segment++;
 598                                 v_T  = *segment++;
 599                                 processed_length += 4;
 600                         } else
 601                         {
 602                                 v_Y   = *segment & 0xFC;
 603                                 v_Cr  = (*segment++ & 3) << 6;
 604                                 v_Cr |= (*segment & 0xC0) >> 2;
 605                                 v_Cb  = (*segment & 0x3C) << 2;
 606                                 v_T   = (*segment++ & 3) << 6;
 607                                 processed_length += 2;
 608                         }
 609
 610                         if (entry_CLUT_flag & 1) // 8bit
 611                         {
 612                                 ASSERT(CLUT_entry_id < 256);
 613                                 clut->entries_8bit[CLUT_entry_id].Y = v_Y;
 614                                 clut->entries_8bit[CLUT_entry_id].Cr = v_Cr;
 615                                 clut->entries_8bit[CLUT_entry_id].Cb = v_Cb;
 616                                 clut->entries_8bit[CLUT_entry_id].T = v_T;
 617                                 clut->entries_8bit[CLUT_entry_id].valid = 1;
 618                         }
 619                         if (entry_CLUT_flag & 2) // 4bit
 620                         {
 621                                 ASSERT(CLUT_entry_id < 16);
 622                                 clut->entries_4bit[CLUT_entry_id].Y = v_Y;
 623                                 clut->entries_4bit[CLUT_entry_id].Cr = v_Cr;
 624                                 clut->entries_4bit[CLUT_entry_id].Cb = v_Cb;
 625                                 clut->entries_4bit[CLUT_entry_id].T = v_T;
 626                                 clut->entries_4bit[CLUT_entry_id].valid = 1;
 627                         }
 628                         if (entry_CLUT_flag & 4) // 2bit
 629                         {
 630                                 ASSERT(CLUT_entry_id < 4);
 631                                 clut->entries_2bit[CLUT_entry_id].Y = v_Y;
 632                                 clut->entries_2bit[CLUT_entry_id].Cr = v_Cr;
 633                                 clut->entries_2bit[CLUT_entry_id].Cb = v_Cb;
 634                                 clut->entries_2bit[CLUT_entry_id].T = v_T;
 635                                 clut->entries_2bit[CLUT_entry_id].valid = 1;
 636                         }
 637                         //eDebug("  %04x %02x %02x %02x %02x", CLUT_entry_id, v_Y, v_Cb, v_Cr, v_T);
 638                 }
 639                 break;
 640         }
 641         case 0x13: // object data segment
 642         {
 643                 int object_id, object_version_number, object_coding_method, non_modifying_color_flag;
 644
 645                 object_id  = *segment++ << 8;
 646                 object_id |= *segment++;
 647                 processed_length += 2;
 648
 649                 object_version_number = *segment >> 4;
 650                 object_coding_method  = (*segment >> 2) & 3;
 651                 non_modifying_color_flag = (*segment++ >> 1) & 1;
 652                 processed_length++;
 653
 654                 //eDebug("object id %04x, version %d, object_coding_method %d (page_id %d)", object_id, object_version_number, object_coding_method, page_id);
 655
 656                 if (object_coding_method == 0)
 657                 {
 658                         int top_field_data_blocklength, bottom_field_data_blocklength;
 659                         int i, line, linep;
 660
 661                         top_field_data_blocklength  = *segment++ << 8;
 662                         top_field_data_blocklength |= *segment++;
 663
 664                         bottom_field_data_blocklength  = *segment++ << 8;
 665                         bottom_field_data_blocklength |= *segment++;
 666                         //eDebug("%d / %d bytes", top_field_data_blocklength, bottom_field_data_blocklength);
 667                         processed_length += 4;
 668
 669                         i = 0;
 670                         line = 0;
 671                         linep = 0;
 672                         while (i < top_field_data_blocklength)
 673                         {
 674                                 int len;
 675                                 len = subtitle_process_pixel_data(page, object_id, &line, &linep, segment);
 676                                 if (len < 0)
 677                                         return -1;
 678                                 segment += len;
 679                                 processed_length += len;
 680                                 i += len;
 681                         }
 682
 683                         line = 1;
 684                         linep = 0;
 685
 686                         if (bottom_field_data_blocklength)
 687                         {
 688                                 i = 0;
 689                                 while (i < bottom_field_data_blocklength)
 690                                 {
 691                                         int len;
 692                                         len = subtitle_process_pixel_data(page, object_id, &line, &linep, segment);
 693                                         if (len < 0)
 694                                                 return -1;
 695                                         segment += len;
 696                                         processed_length += len;
 697                                         i += len;
 698                                 }
 699                         }
 700                         else if (top_field_data_blocklength)
 701                                 eDebug("!!!! unimplemented: no bottom field! (%d : %d)", top_field_data_blocklength, bottom_field_data_blocklength);
 702
 703                         if ((top_field_data_blocklength + bottom_field_data_blocklength) & 1)
 704                         {
 705                                 segment++; processed_length++;
 706                         }
 707                 }
 708                 else if (object_coding_method == 1)
 709                         eDebug("---- object_coding_method 1 unsupported!");
 710
 711                 break;
 712         }
 713         case 0x80: // end of display set segment
 714         {
 715 //              eDebug("end of display set segment");
 716                 subtitle_redraw_all();
 717         }
 718         case 0xFF: // stuffing
 719                 break;
 720         default:
 721                 eDebug("unhandled segment type %02x", segment_type);
 722         }
 723
 724         return segment_length + 6;
 725 }
 726
 727 void eDVBSubtitleParser::subtitle_process_pes(__u8 *pkt, int len)
 728 {
 729 //      eDebug("subtitle_process_pes");
 730         if (!extract_pts(show_time, pkt))
 731         {
 732                 pkt += 6; len -= 6;
 733                 // skip PES header
 734                 pkt++; len--;
 735                 pkt++; len--;
 736
 737                 int hdr_len = *pkt++; len--;
 738
 739                 pkt+=hdr_len; len-=hdr_len;
 740
 741                 if (*pkt != 0x20)
 742                 {
 743                         //eDebug("data identifier is 0x%02x, but not 0x20", *pkt);
 744                         return;
 745                 }
 746                 pkt++; len--; // data identifier
 747                 *pkt++; len--; // stream id;
 748
 749                 if (len <= 0)
 750                 {
 751                         //eDebug("no data left (%d)", len);
 752                         return;
 753                 }
 754
 755                 while (len && *pkt == 0x0F)
 756                 {
 757                         int l = subtitle_process_segment(pkt);
 758                         if (l < 0)
 759                                 break;
 760                         pkt += l;
 761                         len -= l;
 762                 }
 763         //      if (len && *pkt != 0xFF)
 764         //              eDebug("strange data at the end");
 765         }
 766         else
 767                 eDebug("dvb subtitle packet without PTS.. ignore!!");
 768 }
 769
 770 void eDVBSubtitleParser::subtitle_redraw_all()
 771 {
 772 #if 1
 773         subtitle_page *page = this->pages;
 774         while(page)
 775         {
 776                 subtitle_redraw(page->page_id);
 777                 page = page->next;
 778         }
 779 #else
 780         subtitle_page *page = this->pages;
 781         //eDebug("----------- end of display set");
 782         //eDebug("active pages:");
 783         while (page)
 784         {
 785                 //eDebug("  page_id %02x", page->page_id);
 786                 //eDebug("  page_version_number: %d", page->page_version_number);
 787                 //eDebug("  active regions:");
 788                 {
 789                         subtitle_page_region *region = page->page_regions;
 790                         while (region)
 791                         {
 792                                 //eDebug("    region_id: %04x", region->region_id);
 793                                 //eDebug("    region_horizontal_address: %d", region->region_horizontal_address);
 794                                 //eDebug("    region_vertical_address: %d", region->region_vertical_address);
 795
 796                                 region = region->next;
 797                         }
 798                 }
 799
 800                 subtitle_redraw(page->page_id);
 801                 //eDebug("defined regions:");
 802                 subtitle_region *region = page->regions;
 803                 while (region)
 804                 {
 805                         //eDebug("  region_id %04x, version %d, %dx%d", region->region_id, region->region_version_number, region->region_width, region->region_height);
 806
 807                         subtitle_region_object *object = region->region_objects;
 808                         while (object)
 809                         {
 810                                 //eDebug("  object %02x, type %d, %d:%d", object->object_id, object->object_type, object->object_horizontal_position, object->object_vertical_position);
 811                                 object = object->next;
 812                         }
 813                         region = region->next;
 814                 }
 815                 page = page->next;
 816         }
 817 #endif
 818 }
 819
 820 void eDVBSubtitleParser::subtitle_reset()
 821 {
 822         while (subtitle_page *page = this->pages)
 823         {
 824                         /* free page regions */
 825                 while (page->page_regions)
 826                 {
 827                         subtitle_page_region *p = page->page_regions->next;
 828                         delete page->page_regions;
 829                         page->page_regions = p;
 830                 }
 831                         /* free regions */
 832                 while (page->regions)
 833                 {
 834                         subtitle_region *region = page->regions;
 835
 836                         while (region->region_objects)
 837                         {
 838                                 subtitle_region_object *obj = region->region_objects;
 839                                 region->region_objects = obj->next;
 840                                 delete obj;
 841                         }
 842
 843                         if (region->region_buffer)
 844                         {
 845                                 if (region->region_buffer->surface)
 846                                         delete region->region_buffer->surface;
 847                                 region->region_buffer=0;
 848                         }
 849
 850                         page->regions = region->next;
 851                         delete region;
 852                 }
 853
 854                         /* free CLUTs */
 855                 while (page->cluts)
 856                 {
 857                         subtitle_clut *clut = page->cluts;
 858                         page->cluts = clut->next;
 859                         delete clut;
 860                 }
 861
 862                 this->pages = page->next;
 863                 delete page;
 864         }
 865 }
 866
 867 void eDVBSubtitleParser::subtitle_redraw(int page_id)
 868 {
 869         subtitle_page *page = this->pages;
 870
 871         //eDebug("displaying page id %d", page_id);
 872
 873         while (page)
 874         {
 875                 if (page->page_id == page_id)
 876                         break;
 877                 page = page->next;
 878         }
 879         if (!page)
 880         {
 881                 //eDebug("page not found");
 882                 return;
 883         }
 884
 885         //eDebug("iterating regions..");
 886                 /* iterate all regions in this pcs */
 887         subtitle_page_region *region = page->page_regions;
 888
 889         eDVBSubtitlePage Page;
 890         Page.m_show_time = show_time;
 891         for (; region; region=region->next)
 892         {
 893 //              eDebug("region %d", region->region_id);
 894                         /* find corresponding region */
 895                 subtitle_region *reg = page->regions;
 896                 while (reg)
 897                 {
 898                         if (reg->region_id == region->region_id)
 899                                 break;
 900                         reg = reg->next;
 901                 }
 902                 if (reg)
 903                 {
 904 //                      eDebug("copy region %d to %d, %d", region->region_id, region->region_horizontal_address, region->region_vertical_address);
 905
 906                         int x0 = region->region_horizontal_address;
 907                         int y0 = region->region_vertical_address;
 908                         int x1 = x0 + reg->region_width;
 909                         int y1 = y0 + reg->region_height;
 910
 911                         if ((x0 < 0) || (y0 < 0))
 912                         {
 913 //                              eDebug("x0 %d, y0 %d",
 914 //                                      x0, y0);
 915                                 continue;
 916                         }
 917
 918                         /* find corresponding clut */
 919                         subtitle_clut *clut = page->cluts;
 920                         while (clut)
 921                         {
 922                         //eDebug("have %d, want %d", clut->clut_id, main_clut_id);
 923                                 if (clut->clut_id == reg->clut_id)
 924                                         break;
 925                                 clut = clut->next;
 926                         }
 927
 928                         int clut_size = reg->region_buffer->surface->clut.colors = reg->region_depth == subtitle_region::bpp2 ?
 929                                 4 : reg->region_depth == subtitle_region::bpp4 ? 16 : 256;
 930
 931                         if (reg->region_buffer->surface->clut.data &&
 932                                 clut_size != reg->region_buffer->surface->clut.colors)
 933                         {
 934                                 delete [] reg->region_buffer->surface->clut.data;
 935                                 reg->region_buffer->surface->clut.data = 0;
 936                         }
 937
 938                         if (!reg->region_buffer->surface->clut.data)
 939                                 reg->region_buffer->surface->clut.data = new gRGB[clut_size];
 940
 941                         gRGB *palette = reg->region_buffer->surface->clut.data;
 942
 943                         subtitle_clut_entry *entries=0;
 944                         switch(reg->region_depth)
 945                         {
 946                                 case subtitle_region::bpp2:
 947 //                                      eDebug("2BPP");
 948                                         entries = clut->entries_2bit;
 949                                         memset(palette, 0, 4*sizeof(gRGB));
 950                                         palette[0].a = 0xFF;
 951                                         palette[2].r = palette[2].g = palette[2].b = 0xFF;
 952                                         palette[3].r = palette[3].g = palette[3].b = 0x80;
 953                                         break;
 954                                 case subtitle_region::bpp4:
 955 //                                      eDebug("4BPP");
 956                                         entries = clut->entries_4bit;
 957                                         memset(palette, 0, 16*sizeof(gRGB));
 958                                         for (int i=0; i < 16; ++i)
 959                                         {
 960                                                 if (!i)
 961                                                         palette[i].a = 0xFF;
 962                                                 else if (i & 1)
 963                                                 {
 964                                                         if (i & 8)
 965                                                                 palette[i].r = 0x80;
 966                                                         if (i & 4)
 967                                                                 palette[i].g = 0x80;
 968                                                         if (i & 2)
 969                                                                 palette[i].b = 0x80;
 970                                                 }
 971                                                 else
 972                                                 {
 973                                                         if (i & 8)
 974                                                                 palette[i].r = 0xFF;
 975                                                         if (i & 4)
 976                                                                 palette[i].g = 0xFF;
 977                                                         if (i & 2)
 978                                                                 palette[i].b = 0xFF;
 979                                                 }
 980                                         }
 981                                         break;
 982                                 case subtitle_region::bpp8:
 983 //                                      eDebug("8BPP");
 984                                         entries = clut->entries_8bit;
 985                                         memset(palette, 0, 16*sizeof(gRGB));
 986                                         for (int i=0; i < 256; ++i)
 987                                         {
 988                                                 switch (i & 17)
 989                                                 {
 990                                                 case 0: // b1 == 0 && b5 == 0
 991                                                         if (!(i & 14)) // b2 == 0 && b3 == 0 && b4 == 0
 992                                                         {
 993                                                                 if (!(i & 224)) // b6 == 0 && b7 == 0 && b8 == 0
 994                                                                         palette[i].a = 0xFF;
 995                                                                 else
 996                                                                 {
 997                                                                         if (i & 128) // R = 100% x b8
 998                                                                                 palette[i].r = 0xFF;
 999                                                                         if (i & 64) // G = 100% x b7
1000                                                                                 palette[i].g = 0xFF;
1001                                                                         if (i & 32) // B = 100% x b6
1002                                                                                 palette[i].b = 0xFF;
1003                                                                         palette[i].a = 0xBF; // T = 75%
1004                                                                 }
1005                                                                 break;
1006                                                         }
1007                                                         // fallthrough !!
1008                                                 case 16: // b1 == 0 && b5 == 1
1009                                                         if (i & 128) // R = 33% x b8
1010                                                                 palette[i].r = 0x55;
1011                                                         if (i & 64) // G = 33% x b7
1012                                                                 palette[i].g = 0x55;
1013                                                         if (i & 32) // B = 33% x b6
1014                                                                 palette[i].b = 0x55;
1015                                                         if (i & 8) // R + 66,7% x b4
1016                                                                 palette[i].r += 0xAA;
1017                                                         if (i & 4) // G + 66,7% x b3
1018                                                                 palette[i].g += 0xAA;
1019                                                         if (i & 2) // B + 66,7% x b2
1020                                                                 palette[i].b += 0xAA;
1021                                                         if (i & 16) // needed for fall through from case 0!!
1022                                                                 palette[i].a = 0x80; // T = 50%
1023                                                         break;
1024                                                 case 1: // b1 == 1 && b5 == 0
1025                                                         palette[i].r =
1026                                                         palette[i].g =
1027                                                         palette[i].b = 0x80; // 50%
1028                                                         // fall through!!
1029                                                 case 17: // b1 == 1 && b5 == 1
1030                                                         if (i & 128) // R += 16.7% x b8
1031                                                                 palette[i].r += 0x2A;
1032                                                         if (i & 64) // G += 16.7% x b7
1033                                                                 palette[i].g += 0x2A;
1034                                                         if (i & 32) // B += 16.7% x b6
1035                                                                 palette[i].b += 0x2A;
1036                                                         if (i & 8) // R += 33% x b4
1037                                                                 palette[i].r += 0x55;
1038                                                         if (i & 4) // G += 33% x b3
1039                                                                 palette[i].g += 0x55;
1040                                                         if (i & 2) // B += 33% x b2
1041                                                                 palette[i].b += 0x55;
1042                                                         break;
1043                                                 }
1044                                         }
1045                                         break;
1046                         }
1047
1048                         if (clut)
1049                         {
1050                                 for (int i=0; i<clut_size; ++i)
1051                                 {
1052                                         if (entries[i].valid)
1053                                         {
1054                                                 int y = entries[i].Y,
1055                                                         cr = entries[i].Cr,
1056                                                         cb = entries[i].Cb;
1057                                                 if (y > 0)
1058                                                 {
1059                                                         y -= 16;
1060                                                         cr -= 128;
1061                                                         cb -= 128;
1062                                                         palette[i].r = MAX(MIN(((298 * y            + 460 * cr) / 256), 255), 0);
1063                                                         palette[i].g = MAX(MIN(((298 * y -  55 * cb - 137 * cr) / 256), 255), 0);
1064                                                         palette[i].b = MAX(MIN(((298 * y + 543 * cb           ) / 256), 255), 0);
1065                                                         palette[i].a = (entries[i].T) & 0xFF;
1066 //                                                      eDebug("override clut entry %d RGBA %02x%02x%02x%02x", i,
1067 //                                                              palette[i].r, palette[i].g, palette[i].b, palette[i].a);
1068                                                 }
1069                                                 else
1070                                                 {
1071 //                                                      eDebug("mist %d", i);
1072                                                         palette[i].r = 0;
1073                                                         palette[i].g = 0;
1074                                                         palette[i].b = 0;
1075                                                         palette[i].a = 0xFF;
1076                                                 }
1077                                         }
1078                                 }
1079                         }
1080
1081                         eDVBSubtitleRegion Region;
1082                         Region.m_pixmap = reg->region_buffer;
1083                         Region.m_position.setX(x0);
1084                         Region.m_position.setY(y0);
1085                         Page.m_regions.push_back(Region);
1086                 }
1087                 else
1088                         eDebug("region not found");
1089         }
1090         m_new_subtitle_page(Page);
1091         Page.m_regions.clear();
1092 //      eDebug("page timeout is %d", page->page_time_out);
1093 //      Page.m_show_time += (page->page_time_out * 90000);
1094 //      m_new_subtitle_page(Page);
1095         //eDebug("schon gut.");
1096 }
1097
1098 DEFINE_REF(eDVBSubtitleParser);
1099
1100 eDVBSubtitleParser::eDVBSubtitleParser(iDVBDemux *demux)
1101         :pages(0)
1102 {
1103         setStreamID(0xBD);
1104
1105         if (demux->createPESReader(eApp, m_pes_reader))
1106                 eDebug("failed to create dvb subtitle PES reader!");
1107         else
1108                 m_pes_reader->connectRead(slot(*this, &eDVBSubtitleParser::processData), m_read_connection);
1109 }
1110
1111 eDVBSubtitleParser::~eDVBSubtitleParser()
1112 {
1113         subtitle_reset();
1114 }
1115
1116 int eDVBSubtitleParser::stop()
1117 {
1118         if (m_pes_reader)
1119         {
1120                 eDebug("disable dvb subtitles");
1121                 return m_pes_reader->stop();
1122         }
1123         return -1;
1124 }
1125
1126 int eDVBSubtitleParser::start(int pid)
1127 {
1128         if (m_pes_reader)
1129         {
1130                 eDebug("start dvb subtitles on pid 0x%04x", pid);
1131                 return m_pes_reader->start(pid);
1132         }
1133         return -1;
1134 }
1135
1136 void eDVBSubtitleParser::connectNewPage(const Slot1<void, const eDVBSubtitlePage&> &slot, ePtr<eConnection> &connection)
1137 {
1138         connection = new eConnection(this, m_new_subtitle_page.connect(slot));
1139 }