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_buffer->surface->stride * 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                 return 2 + 1;
 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                 return 4 + 1;
 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                 return 16 + 1;
 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                 page->state = page_state;
 349
 350                 //eDebug("page updated: old: %d, new: %d", page->page_version_number, page_version_number);
 351                         // when acquisition point or mode change: remove all displayed pages.
 352                 if ((page_state == 1) || (page_state == 2))
 353                 {
 354                         while (page->page_regions)
 355                         {
 356                                 subtitle_page_region *p = page->page_regions->next;
 357                                 //eDebug("delete page_region %d", page->page_regions->region_id);
 358                                 delete page->page_regions;
 359                                 page->page_regions = p;
 360                         }
 361                         while (page->regions)
 362                         {
 363                                 subtitle_region *p = page->regions->next;
 364                                 //eDebug("delete region %d", page->regions->region_id);
 365                                 while(page->regions->region_objects)
 366                                 {
 367                                         //eDebug("delete region object");
 368                                         subtitle_region_object *ob = page->regions->region_objects->next;
 369                                         delete page->regions->region_objects;
 370                                         page->regions->region_objects = ob;
 371                                 }
 372                                 delete page->regions;
 373                                 page->regions = p;
 374                         }
 375
 376                 }
 377
 378                 //eDebug("new page.. (%d)", page_state);
 379
 380                 page->page_time_out = page_time_out;
 381
 382                 page->page_version_number = page_version_number;
 383
 384                 subtitle_page_region **r = &page->page_regions;
 385
 386                 //eDebug("%d  / %d data left", processed_length, segment_length);
 387
 388                         // go to last entry
 389                 while (*r)
 390                         r = &(*r)->next;
 391
 392                 if (processed_length == segment_length && !page->page_regions)
 393                 {
 394                         //eDebug("no regions in page.. clear screen!!");
 395                         subtitle_redraw(page->page_id);
 396                 }
 397
 398                 while (processed_length < segment_length)
 399                 {
 400                         subtitle_page_region *pr;
 401
 402                                 // append new entry to list
 403                         pr = new subtitle_page_region;
 404                         pr->next = 0;
 405                         *r = pr;
 406                         r = &pr->next;
 407
 408                         pr->region_id = *segment++; processed_length++;
 409                         segment++; processed_length++;
 410
 411                         pr->region_horizontal_address  = *segment++ << 8;
 412                         pr->region_horizontal_address |= *segment++;
 413                         processed_length += 2;
 414
 415                         pr->region_vertical_address  = *segment++ << 8;
 416                         pr->region_vertical_address |= *segment++;
 417                         processed_length += 2;
 418
 419                         //eDebug("appended active region");
 420                 }
 421
 422                 if (processed_length != segment_length)
 423                         eDebug("%d != %d", processed_length, segment_length);
 424                 break;
 425         }
 426         case 0x11: // region composition segment
 427         {
 428                 int region_id = *segment++; processed_length++;
 429                 int region_version_number = *segment >> 4;
 430                 int region_fill_flag = (*segment >> 3) & 1;
 431                 segment++; processed_length++;
 432
 433                         // if we didn't yet received the pcs for this page, drop the region
 434                 if (!page)
 435                 {
 436                         eDebug("ignoring region %x, since page %02x doesn't yet exist.", region_id, page_id);
 437                         break;
 438                 }
 439
 440                 subtitle_region *region, **pregion;
 441
 442                 region = page->regions; pregion = &page->regions;
 443
 444                 while (region)
 445                 {
 446                         fflush(stdout);
 447                         if (region->region_id == region_id)
 448                                 break;
 449                         pregion = &region->next;
 450                         region = region->next;
 451                 }
 452
 453                 if (!region)
 454                 {
 455                         //eDebug("create region !!!!!!!!!!");
 456                         *pregion = region = new subtitle_region;
 457                         region->next = 0;
 458                         region->committed = false;
 459                 }
 460                 else if (region->region_version_number != region_version_number)
 461                 {
 462                         subtitle_region_object *objects = region->region_objects;
 463                         //eDebug("unequal version %p %p", objects, objects?objects->next:objects);
 464                         while (objects)
 465                         {
 466                                 subtitle_region_object *n = objects->next;
 467                                 delete objects;
 468                                 objects = n;
 469                         }
 470                         if (region->region_buffer)
 471                         {
 472                                 //eDebug("no more need of region_buffer %p", &(*region->region_buffer));
 473                                 region->region_buffer=0;
 474                         }
 475                         region->committed = false;
 476                 }
 477                 else
 478                         break;
 479
 480                 //eDebug("region %d:%d update", page_id, region_id);
 481
 482                 region->region_id = region_id;
 483                 region->region_version_number = region_version_number;
 484
 485                 region->region_width  = *segment++ << 8;
 486                 region->region_width |= *segment++;
 487                 processed_length += 2;
 488
 489                 region->region_height  = *segment++ << 8;
 490                 region->region_height |= *segment++;
 491                 processed_length += 2;
 492
 493                 region->region_buffer = new gPixmap(eSize(region->region_width, region->region_height), 8, 1);
 494                 memset(region->region_buffer->surface->data, 0, region->region_height * region->region_buffer->surface->stride);
 495                 //eDebug("new region_buffer %p", &(*region->region_buffer));
 496
 497                 int region_level_of_compatibility, region_depth;
 498
 499                 region_level_of_compatibility = (*segment >> 5) & 7;
 500                 region_depth = (*segment++ >> 2) & 7;
 501                 region->region_depth = (subtitle_region::depth) region_depth;
 502                 processed_length++;
 503
 504                 int CLUT_id = *segment++; processed_length++;
 505
 506                 region->clut_id = CLUT_id;
 507
 508                 int region_8bit_pixel_code, region_4bit_pixel_code, region_2bit_pixel_code;
 509                 region_8bit_pixel_code = *segment++; processed_length++;
 510                 region_4bit_pixel_code = *segment >> 4;
 511                 region_2bit_pixel_code = (*segment++ >> 2) & 3;
 512                 processed_length++;
 513
 514                 if (!region_fill_flag)
 515                 {
 516                         region_2bit_pixel_code = region_4bit_pixel_code = region_8bit_pixel_code = 0;
 517                         region_fill_flag = 1;
 518                 }
 519
 520                 if (region_fill_flag)
 521                 {
 522                         //eDebug("region fill region_buffer %p", &(*region->region_buffer));
 523                         if (region_depth == 1)
 524                                 memset(region->region_buffer->surface->data, region_2bit_pixel_code, region->region_height * region->region_width);
 525                         else if (region_depth == 2)
 526                                 memset(region->region_buffer->surface->data, region_4bit_pixel_code, region->region_height * region->region_width);
 527                         else if (region_depth == 3)
 528                                 memset(region->region_buffer->surface->data, region_8bit_pixel_code, region->region_height * region->region_width);
 529                         else
 530                                 eDebug("!!!! invalid depth");
 531                 }
 532
 533                 //eDebug("region %02x, version %d, %dx%d", region->region_id, region->region_version_number, region->region_width, region->region_height);
 534
 535                 region->region_objects = 0;
 536                 subtitle_region_object **pobject = &region->region_objects;
 537
 538                 while (processed_length < segment_length)
 539                 {
 540                         subtitle_region_object *object;
 541
 542                         object = new subtitle_region_object;
 543
 544                         *pobject = object;
 545                         object->next = 0;
 546                         pobject = &object->next;
 547
 548                         object->object_id  = *segment++ << 8;
 549                         object->object_id |= *segment++; processed_length += 2;
 550
 551                         object->object_type = *segment >> 6;
 552                         object->object_provider_flag = (*segment >> 4) & 3;
 553                         object->object_horizontal_position  = (*segment++ & 0xF) << 8;
 554                         object->object_horizontal_position |= *segment++;
 555                         processed_length += 2;
 556
 557                         object->object_vertical_position  = *segment++ << 8;
 558                         object->object_vertical_position |= *segment++ ;
 559                         processed_length += 2;
 560
 561                         if ((object->object_type == 1) || (object->object_type == 2))
 562                         {
 563                                 object->foreground_pixel_value = *segment++;
 564                                 object->background_pixel_value = *segment++;
 565                                 processed_length += 2;
 566                         }
 567                 }
 568
 569                 if (processed_length != segment_length)
 570                         eDebug("too less data! (%d < %d)", segment_length, processed_length);
 571
 572                 break;
 573         }
 574         case 0x12: // CLUT definition segment
 575         {
 576                 int CLUT_id, CLUT_version_number;
 577                 subtitle_clut *clut, **pclut;
 578
 579                 if (!page)
 580                         break;
 581
 582                 //eDebug("CLUT: %02x", *segment);
 583                 CLUT_id = *segment++;
 584
 585                 CLUT_version_number = *segment++ >> 4;
 586                 processed_length += 2;
 587
 588                 //eDebug("page %d, CLUT %02x, version %d", page->page_id, CLUT_id, CLUT_version_number);
 589
 590                 clut = page->cluts; pclut = &page->cluts;
 591
 592                 while (clut)
 593                 {
 594                         if (clut->clut_id == CLUT_id)
 595                                 break;
 596                         pclut = &clut->next;
 597                         clut = clut->next;
 598                 }
 599
 600                 if (!clut)
 601                 {
 602                         *pclut = clut = new subtitle_clut;
 603                         clut->next = 0;
 604                         clut->clut_id = CLUT_id;
 605                 }
 606                 else if (clut->CLUT_version_number == CLUT_version_number)
 607                         break;
 608
 609                 clut->CLUT_version_number=CLUT_version_number;
 610
 611                 memset(clut->entries_2bit, 0, sizeof(clut->entries_2bit));
 612                 memset(clut->entries_4bit, 0, sizeof(clut->entries_4bit));
 613                 memset(clut->entries_8bit, 0, sizeof(clut->entries_8bit));
 614
 615                 //eDebug("new clut");
 616                 while (processed_length < segment_length)
 617                 {
 618                         int CLUT_entry_id, entry_CLUT_flag, full_range;
 619                         int v_Y, v_Cr, v_Cb, v_T;
 620
 621                         CLUT_entry_id = *segment++;
 622                         full_range = *segment & 1;
 623                         entry_CLUT_flag = (*segment++ & 0xE0) >> 5;
 624                         processed_length += 2;
 625
 626                         if (full_range)
 627                         {
 628                                 v_Y  = *segment++;
 629                                 v_Cr = *segment++;
 630                                 v_Cb = *segment++;
 631                                 v_T  = *segment++;
 632                                 processed_length += 4;
 633                         } else
 634                         {
 635                                 v_Y   = *segment & 0xFC;
 636                                 v_Cr  = (*segment++ & 3) << 6;
 637                                 v_Cr |= (*segment & 0xC0) >> 2;
 638                                 v_Cb  = (*segment & 0x3C) << 2;
 639                                 v_T   = (*segment++ & 3) << 6;
 640                                 processed_length += 2;
 641                         }
 642
 643                         if (entry_CLUT_flag & 1) // 8bit
 644                         {
 645                                 ASSERT(CLUT_entry_id < 256);
 646                                 clut->entries_8bit[CLUT_entry_id].Y = v_Y;
 647                                 clut->entries_8bit[CLUT_entry_id].Cr = v_Cr;
 648                                 clut->entries_8bit[CLUT_entry_id].Cb = v_Cb;
 649                                 clut->entries_8bit[CLUT_entry_id].T = v_T;
 650                                 clut->entries_8bit[CLUT_entry_id].valid = 1;
 651                         }
 652                         if (entry_CLUT_flag & 2) // 4bit
 653                         {
 654                                 ASSERT(CLUT_entry_id < 16);
 655                                 clut->entries_4bit[CLUT_entry_id].Y = v_Y;
 656                                 clut->entries_4bit[CLUT_entry_id].Cr = v_Cr;
 657                                 clut->entries_4bit[CLUT_entry_id].Cb = v_Cb;
 658                                 clut->entries_4bit[CLUT_entry_id].T = v_T;
 659                                 clut->entries_4bit[CLUT_entry_id].valid = 1;
 660                         }
 661                         if (entry_CLUT_flag & 4) // 2bit
 662                         {
 663                                 ASSERT(CLUT_entry_id < 4);
 664                                 clut->entries_2bit[CLUT_entry_id].Y = v_Y;
 665                                 clut->entries_2bit[CLUT_entry_id].Cr = v_Cr;
 666                                 clut->entries_2bit[CLUT_entry_id].Cb = v_Cb;
 667                                 clut->entries_2bit[CLUT_entry_id].T = v_T;
 668                                 clut->entries_2bit[CLUT_entry_id].valid = 1;
 669                         }
 670                         //eDebug("  %04x %02x %02x %02x %02x", CLUT_entry_id, v_Y, v_Cb, v_Cr, v_T);
 671                 }
 672                 break;
 673         }
 674         case 0x13: // object data segment
 675         {
 676                 int object_id, object_version_number, object_coding_method, non_modifying_color_flag;
 677
 678                 object_id  = *segment++ << 8;
 679                 object_id |= *segment++;
 680                 processed_length += 2;
 681
 682                 object_version_number = *segment >> 4;
 683                 object_coding_method  = (*segment >> 2) & 3;
 684                 non_modifying_color_flag = (*segment++ >> 1) & 1;
 685                 processed_length++;
 686
 687                 //eDebug("object id %04x, version %d, object_coding_method %d (page_id %d)", object_id, object_version_number, object_coding_method, page_id);
 688
 689                 if (object_coding_method == 0)
 690                 {
 691                         int top_field_data_blocklength, bottom_field_data_blocklength;
 692                         int i, line, linep;
 693
 694                         top_field_data_blocklength  = *segment++ << 8;
 695                         top_field_data_blocklength |= *segment++;
 696
 697                         bottom_field_data_blocklength  = *segment++ << 8;
 698                         bottom_field_data_blocklength |= *segment++;
 699                         eDebug("%d / %d bytes", top_field_data_blocklength, bottom_field_data_blocklength);
 700                         processed_length += 4;
 701
 702                         i = 0;
 703                         line = 0;
 704                         linep = 0;
 705                         while (i < top_field_data_blocklength)
 706                         {
 707                                 int len;
 708                                 len = subtitle_process_pixel_data(page, object_id, &line, &linep, segment);
 709                                 if (len < 0)
 710                                         return -1;
 711                                 segment += len;
 712                                 processed_length += len;
 713                                 i += len;
 714                         }
 715
 716                         line = 1;
 717                         linep = 0;
 718
 719                         if (bottom_field_data_blocklength)
 720                         {
 721                                 i = 0;
 722                                 while (i < bottom_field_data_blocklength)
 723                                 {
 724                                         int len;
 725                                         len = subtitle_process_pixel_data(page, object_id, &line, &linep, segment);
 726                                         if (len < 0)
 727                                                 return -1;
 728                                         segment += len;
 729                                         processed_length += len;
 730                                         i += len;
 731                                 }
 732                         }
 733                         else if (top_field_data_blocklength)
 734                                 eDebug("!!!! unimplemented: no bottom field! (%d : %d)", top_field_data_blocklength, bottom_field_data_blocklength);
 735
 736                         if ((top_field_data_blocklength + bottom_field_data_blocklength) & 1)
 737                         {
 738                                 segment++; processed_length++;
 739                         }
 740                 }
 741                 else if (object_coding_method == 1)
 742                         eDebug("---- object_coding_method 1 unsupported!");
 743
 744                 break;
 745         }
 746         case 0x80: // end of display set segment
 747         {
 748                 //eDebug("end of display set segment");
 749                 subtitle_redraw_all();
 750         }
 751         case 0xFF: // stuffing
 752                 break;
 753         default:
 754                 eDebug("unhandled segment type %02x", segment_type);
 755         }
 756
 757         return segment_length + 6;
 758 }
 759
 760 void eDVBSubtitleParser::subtitle_process_pes(__u8 *pkt, int len)
 761 {
 762         eDebugNoNewLine("subtitle_process_pes");
 763         if (!extract_pts(m_show_time, pkt))
 764         {
 765                 eDebug(" %lld", m_show_time);
 766                 pkt += 6; len -= 6;
 767                 // skip PES header
 768                 pkt++; len--;
 769                 pkt++; len--;
 770
 771                 int hdr_len = *pkt++; len--;
 772
 773                 pkt+=hdr_len; len-=hdr_len;
 774
 775                 if (*pkt != 0x20)
 776                 {
 777                         //eDebug("data identifier is 0x%02x, but not 0x20", *pkt);
 778                         return;
 779                 }
 780                 pkt++; len--; // data identifier
 781                 *pkt++; len--; // stream id;
 782
 783                 if (len <= 0)
 784                 {
 785                         //eDebug("no data left (%d)", len);
 786                         return;
 787                 }
 788
 789                 while (len && *pkt == 0x0F)
 790                 {
 791                         int l = subtitle_process_segment(pkt);
 792                         if (l < 0)
 793                                 break;
 794                         pkt += l;
 795                         len -= l;
 796                 }
 797                 if (len && *pkt != 0xFF)
 798                         eDebug("strange data at the end");
 799         }
 800         else
 801                 eDebug("\ndvb subtitle packet without PTS.. ignore!!");
 802 }
 803
 804 void eDVBSubtitleParser::subtitle_redraw_all()
 805 {
 806 #if 1
 807         subtitle_page *page = m_pages;
 808         while(page)
 809         {
 810                 if (page->state != 0)
 811                         subtitle_redraw(page->page_id);
 812                 page = page->next;
 813         }
 814 #else
 815         subtitle_page *page = m_pages;
 816         eDebug("----------- end of display set");
 817         eDebug("active pages:");
 818         while (page)
 819         {
 820                 eDebug("  page_id %02x", page->page_id);
 821                 eDebug("  page_version_number: %d", page->page_version_number);
 822                 eDebug("  active regions:");
 823                 {
 824                         subtitle_page_region *region = page->page_regions;
 825                         while (region)
 826                         {
 827                                 eDebug("    region_id: %04x", region->region_id);
 828                                 eDebug("    region_horizontal_address: %d", region->region_horizontal_address);
 829                                 eDebug("    region_vertical_address: %d", region->region_vertical_address);
 830
 831                                 region = region->next;
 832                         }
 833                 }
 834
 835                 subtitle_redraw(page->page_id);
 836                 eDebug("defined regions:");
 837                 subtitle_region *region = page->regions;
 838                 while (region)
 839                 {
 840                         eDebug("  region_id %04x, version %d, %dx%d", region->region_id, region->region_version_number, region->region_width, region->region_height);
 841
 842                         subtitle_region_object *object = region->region_objects;
 843                         while (object)
 844                         {
 845                                 eDebug("  object %02x, type %d, %d:%d", object->object_id, object->object_type, object->object_horizontal_position, object->object_vertical_position);
 846                                 object = object->next;
 847                         }
 848                         region = region->next;
 849                 }
 850                 page = page->next;
 851         }
 852 #endif
 853 }
 854
 855 void eDVBSubtitleParser::subtitle_reset()
 856 {
 857         while (subtitle_page *page = m_pages)
 858         {
 859                         /* free page regions */
 860                 while (page->page_regions)
 861                 {
 862                         subtitle_page_region *p = page->page_regions->next;
 863                         delete page->page_regions;
 864                         page->page_regions = p;
 865                 }
 866                         /* free regions */
 867                 while (page->regions)
 868                 {
 869                         subtitle_region *region = page->regions;
 870
 871                         while (region->region_objects)
 872                         {
 873                                 subtitle_region_object *obj = region->region_objects;
 874                                 region->region_objects = obj->next;
 875                                 delete obj;
 876                         }
 877
 878                         if (region->region_buffer)
 879                         {
 880 //                              eDebug("no more need of region_buffer 2 %p", &(*region->region_buffer));
 881                                 region->region_buffer=0;
 882                         }
 883
 884                         page->regions = region->next;
 885                         delete region;
 886                 }
 887
 888                         /* free CLUTs */
 889                 while (page->cluts)
 890                 {
 891                         subtitle_clut *clut = page->cluts;
 892                         page->cluts = clut->next;
 893                         delete clut;
 894                 }
 895
 896                 m_pages = page->next;
 897                 delete page;
 898         }
 899 }
 900
 901 void eDVBSubtitleParser::subtitle_redraw(int page_id)
 902 {
 903         subtitle_page *page = m_pages;
 904
 905 //      eDebug("displaying page id %d", page_id);
 906
 907         while (page)
 908         {
 909                 if (page->page_id == page_id)
 910                         break;
 911                 page = page->next;
 912         }
 913         if (!page)
 914         {
 915                 //eDebug("page not found");
 916                 return;
 917         }
 918
 919         //eDebug("iterating regions..");
 920                 /* iterate all regions in this pcs */
 921         subtitle_page_region *region = page->page_regions;
 922
 923         eDVBSubtitlePage Page;
 924         Page.m_show_time = m_show_time;
 925         for (; region; region=region->next)
 926         {
 927 //              eDebug("region %d", region->region_id);
 928                         /* find corresponding region */
 929                 subtitle_region *reg = page->regions;
 930                 while (reg)
 931                 {
 932                         if (reg->region_id == region->region_id)
 933                                 break;
 934                         reg = reg->next;
 935                 }
 936                 if (reg)
 937                 {
 938                         if (reg->committed)
 939                                 continue;
 940 //                      eDebug("copy region %d to %d, %d", region->region_id, region->region_horizontal_address, region->region_vertical_address);
 941
 942                         int x0 = region->region_horizontal_address;
 943                         int y0 = region->region_vertical_address;
 944
 945                         if ((x0 < 0) || (y0 < 0))
 946                         {
 947 //                              eDebug("x0 %d, y0 %d",
 948 //                                      x0, y0);
 949                                 continue;
 950                         }
 951
 952                         /* find corresponding clut */
 953                         subtitle_clut *clut = page->cluts;
 954                         while (clut)
 955                         {
 956                         //eDebug("have %d, want %d", clut->clut_id, main_clut_id);
 957                                 if (clut->clut_id == reg->clut_id)
 958                                         break;
 959                                 clut = clut->next;
 960                         }
 961
 962                         int clut_size = reg->region_buffer->surface->clut.colors = reg->region_depth == subtitle_region::bpp2 ?
 963                                 4 : reg->region_depth == subtitle_region::bpp4 ? 16 : 256;
 964
 965                         reg->region_buffer->surface->clut.data = new gRGB[clut_size];
 966 //                      eDebug("create clut data for region_buffer %p", &(*reg->region_buffer));
 967
 968                         gRGB *palette = reg->region_buffer->surface->clut.data;
 969
 970                         subtitle_clut_entry *entries=0;
 971                         switch(reg->region_depth)
 972                         {
 973                                 case subtitle_region::bpp2:
 974 //                                      eDebug("2BPP");
 975                                         entries = clut->entries_2bit;
 976                                         memset(palette, 0, 4*sizeof(gRGB));
 977                                         palette[0].a = 0xFF;
 978                                         palette[2].r = palette[2].g = palette[2].b = 0xFF;
 979                                         palette[3].r = palette[3].g = palette[3].b = 0x80;
 980                                         break;
 981                                 case subtitle_region::bpp4:
 982 //                                      eDebug("4BPP");
 983                                         entries = clut->entries_4bit;
 984                                         memset(palette, 0, 16*sizeof(gRGB));
 985                                         for (int i=0; i < 16; ++i)
 986                                         {
 987                                                 if (!i)
 988                                                         palette[i].a = 0xFF;
 989                                                 else if (i & 1)
 990                                                 {
 991                                                         if (i & 8)
 992                                                                 palette[i].r = 0x80;
 993                                                         if (i & 4)
 994                                                                 palette[i].g = 0x80;
 995                                                         if (i & 2)
 996                                                                 palette[i].b = 0x80;
 997                                                 }
 998                                                 else
 999                                                 {
1000                                                         if (i & 8)
1001                                                                 palette[i].r = 0xFF;
1002                                                         if (i & 4)
1003                                                                 palette[i].g = 0xFF;
1004                                                         if (i & 2)
1005                                                                 palette[i].b = 0xFF;
1006                                                 }
1007                                         }
1008                                         break;
1009                                 case subtitle_region::bpp8:
1010 //                                      eDebug("8BPP");
1011                                         entries = clut->entries_8bit;
1012                                         memset(palette, 0, 16*sizeof(gRGB));
1013                                         for (int i=0; i < 256; ++i)
1014                                         {
1015                                                 switch (i & 17)
1016                                                 {
1017                                                 case 0: // b1 == 0 && b5 == 0
1018                                                         if (!(i & 14)) // b2 == 0 && b3 == 0 && b4 == 0
1019                                                         {
1020                                                                 if (!(i & 224)) // b6 == 0 && b7 == 0 && b8 == 0
1021                                                                         palette[i].a = 0xFF;
1022                                                                 else
1023                                                                 {
1024                                                                         if (i & 128) // R = 100% x b8
1025                                                                                 palette[i].r = 0xFF;
1026                                                                         if (i & 64) // G = 100% x b7
1027                                                                                 palette[i].g = 0xFF;
1028                                                                         if (i & 32) // B = 100% x b6
1029                                                                                 palette[i].b = 0xFF;
1030                                                                         palette[i].a = 0xBF; // T = 75%
1031                                                                 }
1032                                                                 break;
1033                                                         }
1034                                                         // fallthrough !!
1035                                                 case 16: // b1 == 0 && b5 == 1
1036                                                         if (i & 128) // R = 33% x b8
1037                                                                 palette[i].r = 0x55;
1038                                                         if (i & 64) // G = 33% x b7
1039                                                                 palette[i].g = 0x55;
1040                                                         if (i & 32) // B = 33% x b6
1041                                                                 palette[i].b = 0x55;
1042                                                         if (i & 8) // R + 66,7% x b4
1043                                                                 palette[i].r += 0xAA;
1044                                                         if (i & 4) // G + 66,7% x b3
1045                                                                 palette[i].g += 0xAA;
1046                                                         if (i & 2) // B + 66,7% x b2
1047                                                                 palette[i].b += 0xAA;
1048                                                         if (i & 16) // needed for fall through from case 0!!
1049                                                                 palette[i].a = 0x80; // T = 50%
1050                                                         break;
1051                                                 case 1: // b1 == 1 && b5 == 0
1052                                                         palette[i].r =
1053                                                         palette[i].g =
1054                                                         palette[i].b = 0x80; // 50%
1055                                                         // fall through!!
1056                                                 case 17: // b1 == 1 && b5 == 1
1057                                                         if (i & 128) // R += 16.7% x b8
1058                                                                 palette[i].r += 0x2A;
1059                                                         if (i & 64) // G += 16.7% x b7
1060                                                                 palette[i].g += 0x2A;
1061                                                         if (i & 32) // B += 16.7% x b6
1062                                                                 palette[i].b += 0x2A;
1063                                                         if (i & 8) // R += 33% x b4
1064                                                                 palette[i].r += 0x55;
1065                                                         if (i & 4) // G += 33% x b3
1066                                                                 palette[i].g += 0x55;
1067                                                         if (i & 2) // B += 33% x b2
1068                                                                 palette[i].b += 0x55;
1069                                                         break;
1070                                                 }
1071                                         }
1072                                         break;
1073                         }
1074
1075                         if (clut)
1076                         {
1077                                 for (int i=0; i<clut_size; ++i)
1078                                 {
1079                                         if (entries[i].valid)
1080                                         {
1081                                                 int y = entries[i].Y,
1082                                                         cr = entries[i].Cr,
1083                                                         cb = entries[i].Cb;
1084                                                 if (y > 0)
1085                                                 {
1086                                                         y -= 16;
1087                                                         cr -= 128;
1088                                                         cb -= 128;
1089                                                         palette[i].r = MAX(MIN(((298 * y            + 460 * cr) / 256), 255), 0);
1090                                                         palette[i].g = MAX(MIN(((298 * y -  55 * cb - 137 * cr) / 256), 255), 0);
1091                                                         palette[i].b = MAX(MIN(((298 * y + 543 * cb           ) / 256), 255), 0);
1092                                                         palette[i].a = (entries[i].T) & 0xFF;
1093 //                                                      eDebug("override clut entry %d RGBA %02x%02x%02x%02x", i,
1094 //                                                              palette[i].r, palette[i].g, palette[i].b, palette[i].a);
1095                                                 }
1096                                                 else
1097                                                 {
1098 //                                                      eDebug("mist %d", i);
1099                                                         palette[i].r = 0;
1100                                                         palette[i].g = 0;
1101                                                         palette[i].b = 0;
1102                                                         palette[i].a = 0xFF;
1103                                                 }
1104                                         }
1105                                 }
1106                         }
1107
1108 //                      eDebug("commit region_buffer %p", &(*reg->region_buffer));
1109                         eDVBSubtitleRegion Region;
1110                         Region.m_pixmap = reg->region_buffer;
1111                         Region.m_position.setX(x0);
1112                         Region.m_position.setY(y0);
1113                         Page.m_regions.push_back(Region);
1114                         reg->committed = true;
1115                 }
1116                 else
1117                         eDebug("region not found");
1118         }
1119         m_new_subtitle_page(Page);
1120         Page.m_regions.clear();
1121 //      eDebug("page timeout is %d", page->page_time_out);
1122 //      Page.m_show_time += (page->page_time_out * 90000);
1123 //      m_new_subtitle_page(Page);
1124         //eDebug("schon gut.");
1125 }
1126
1127 DEFINE_REF(eDVBSubtitleParser);
1128
1129 eDVBSubtitleParser::eDVBSubtitleParser(iDVBDemux *demux)
1130         :m_pages(0)
1131 {
1132         setStreamID(0xBD);
1133
1134         if (demux->createPESReader(eApp, m_pes_reader))
1135                 eDebug("failed to create dvb subtitle PES reader!");
1136         else
1137                 m_pes_reader->connectRead(slot(*this, &eDVBSubtitleParser::processData), m_read_connection);
1138 }
1139
1140 eDVBSubtitleParser::~eDVBSubtitleParser()
1141 {
1142         subtitle_reset();
1143 }
1144
1145 int eDVBSubtitleParser::stop()
1146 {
1147         if (m_pes_reader)
1148         {
1149                 eDebug("disable dvb subtitles");
1150                 return m_pes_reader->stop();
1151         }
1152         return -1;
1153 }
1154
1155 int eDVBSubtitleParser::start(int pid, int composition_page_id, int ancillary_page_id)
1156 {
1157         if (m_pes_reader)
1158         {
1159                 eDebug("start dvb subtitles on pid 0x%04x with composition_page_id %d and ancillary_page_id %d",
1160                         pid, composition_page_id, ancillary_page_id);
1161                 m_composition_page_id = composition_page_id;
1162                 m_ancillary_page_id = ancillary_page_id;
1163                 return m_pes_reader->start(pid);
1164         }
1165         return -1;
1166 }
1167
1168 void eDVBSubtitleParser::connectNewPage(const Slot1<void, const eDVBSubtitlePage&> &slot, ePtr<eConnection> &connection)
1169 {
1170         connection = new eConnection(this, m_new_subtitle_page.connect(slot));
1171 }