/xbmc/cores/dvdplayer/DVDPlayerTeletext.cpp
C++ | 771 lines | 621 code | 96 blank | 54 comment | 217 complexity | a4b775bf486ad0021f7ea81f87fdb3dd MD5 | raw file
1/* 2 * Copyright (C) 2005-2013 Team XBMC 3 * http://xbmc.org 4 * 5 * This Program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2, or (at your option) 8 * any later version. 9 * 10 * This Program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with XBMC; see the file COPYING. If not, see 17 * <http://www.gnu.org/licenses/>. 18 * 19 */ 20 21#include "DVDPlayerTeletext.h" 22#include "DVDClock.h" 23#include "DVDStreamInfo.h" 24#include "DVDCodecs/DVDCodecs.h" 25#include "utils/log.h" 26#include "threads/SingleLock.h" 27 28using namespace std; 29 30const uint8_t rev_lut[32] = 31{ 32 0x00,0x08,0x04,0x0c, /* upper nibble */ 33 0x02,0x0a,0x06,0x0e, 34 0x01,0x09,0x05,0x0d, 35 0x03,0x0b,0x07,0x0f, 36 0x00,0x80,0x40,0xc0, /* lower nibble */ 37 0x20,0xa0,0x60,0xe0, 38 0x10,0x90,0x50,0xd0, 39 0x30,0xb0,0x70,0xf0 40}; 41 42void CDVDTeletextTools::NextDec(int *i) /* skip to next decimal */ 43{ 44 (*i)++; 45 46 if ((*i & 0x0F) > 0x09) 47 *i += 0x06; 48 49 if ((*i & 0xF0) > 0x90) 50 *i += 0x60; 51 52 if (*i > 0x899) 53 *i = 0x100; 54} 55 56void CDVDTeletextTools::PrevDec(int *i) /* counting down */ 57{ 58 (*i)--; 59 60 if ((*i & 0x0F) > 0x09) 61 *i -= 0x06; 62 63 if ((*i & 0xF0) > 0x90) 64 *i -= 0x60; 65 66 if (*i < 0x100) 67 *i = 0x899; 68} 69 70/* print hex-number into string, s points to last digit, caller has to provide enough space, no termination */ 71void CDVDTeletextTools::Hex2Str(char *s, unsigned int n) 72{ 73 do { 74 char c = (n & 0xF); 75 *s-- = number2char(c); 76 n >>= 4; 77 } while (n); 78} 79 80signed int CDVDTeletextTools::deh24(unsigned char *p) 81{ 82 int e = hamm24par[0][p[0]] 83 ^ hamm24par[1][p[1]] 84 ^ hamm24par[2][p[2]]; 85 86 int x = hamm24val[p[0]] 87 + (p[1] & 127) * 16 88 + (p[2] & 127) * 2048; 89 90 return (x ^ hamm24cor[e]) | hamm24err[e]; 91} 92 93 94CDVDTeletextData::CDVDTeletextData() 95: CThread("DVDTeletextData") 96, m_messageQueue("teletext") 97{ 98 m_speed = DVD_PLAYSPEED_NORMAL; 99 100 m_messageQueue.SetMaxDataSize(40 * 256 * 1024); 101 102 /* Initialize Data structures */ 103 memset(&m_TXTCache.astCachetable, 0, sizeof(m_TXTCache.astCachetable)); 104 memset(&m_TXTCache.astP29, 0, sizeof(m_TXTCache.astP29)); 105 ResetTeletextCache(); 106} 107 108CDVDTeletextData::~CDVDTeletextData() 109{ 110 StopThread(); 111 ResetTeletextCache(); 112} 113 114bool CDVDTeletextData::CheckStream(CDVDStreamInfo &hints) 115{ 116 if (hints.codec == AV_CODEC_ID_DVB_TELETEXT) 117 return true; 118 119 return false; 120} 121 122bool CDVDTeletextData::OpenStream(CDVDStreamInfo &hints) 123{ 124 m_messageQueue.Init(); 125 126 if (hints.codec == AV_CODEC_ID_DVB_TELETEXT) 127 { 128 CLog::Log(LOGNOTICE, "Creating teletext data thread"); 129 Create(); 130 return true; 131 } 132 133 return false; 134} 135 136void CDVDTeletextData::CloseStream(bool bWaitForBuffers) 137{ 138 // wait until buffers are empty 139 if (bWaitForBuffers && m_speed > 0) m_messageQueue.WaitUntilEmpty(); 140 141 m_messageQueue.Abort(); 142 143 // wait for decode_video thread to end 144 CLog::Log(LOGNOTICE, "waiting for teletext data thread to exit"); 145 146 StopThread(); // will set this->m_bStop to true 147 148 m_messageQueue.End(); 149 ResetTeletextCache(); 150} 151 152 153void CDVDTeletextData::ResetTeletextCache() 154{ 155 CSingleLock lock(m_critSection); 156 157 /* Reset Data structures */ 158 for (int i = 0; i < 0x900; i++) 159 { 160 for (int j = 0; j < 0x80; j++) 161 { 162 if (m_TXTCache.astCachetable[i][j]) 163 { 164 TextPageinfo_t *p = &(m_TXTCache.astCachetable[i][j]->pageinfo); 165 if (p->p24) 166 free(p->p24); 167 168 if (p->ext) 169 { 170 if (p->ext->p27) 171 free(p->ext->p27); 172 173 for (int d26 = 0; d26 < 16; d26++) 174 { 175 if (p->ext->p26[d26]) 176 free(p->ext->p26[d26]); 177 } 178 free(p->ext); 179 } 180 delete m_TXTCache.astCachetable[i][j]; 181 m_TXTCache.astCachetable[i][j] = 0; 182 } 183 } 184 } 185 186 for (int i = 0; i < 9; i++) 187 { 188 if (m_TXTCache.astP29[i]) 189 { 190 if (m_TXTCache.astP29[i]->p27) 191 free(m_TXTCache.astP29[i]->p27); 192 193 for (int d26 = 0; d26 < 16; d26++) 194 { 195 if (m_TXTCache.astP29[i]->p26[d26]) 196 free(m_TXTCache.astP29[i]->p26[d26]); 197 } 198 free(m_TXTCache.astP29[i]); 199 m_TXTCache.astP29[i] = 0; 200 } 201 m_TXTCache.CurrentPage[i] = -1; 202 m_TXTCache.CurrentSubPage[i] = -1; 203 } 204 205 memset(&m_TXTCache.SubPageTable, 0xFF, sizeof(m_TXTCache.SubPageTable)); 206 memset(&m_TXTCache.astP29, 0, sizeof(m_TXTCache.astP29)); 207 memset(&m_TXTCache.BasicTop, 0, sizeof(m_TXTCache.BasicTop)); 208 memset(&m_TXTCache.ADIPTable, 0, sizeof(m_TXTCache.ADIPTable)); 209 memset(&m_TXTCache.FlofPages, 0, sizeof(m_TXTCache.FlofPages)); 210 memset(&m_TXTCache.SubtitlePages, 0, sizeof(m_TXTCache.SubtitlePages)); 211 memset(&m_TXTCache.astCachetable, 0, sizeof(m_TXTCache.astCachetable)); 212 memset(&m_TXTCache.TimeString, 0x20, 8); 213 214 m_TXTCache.NationalSubset = NAT_DEFAULT;/* default */ 215 m_TXTCache.NationalSubsetSecondary = NAT_DEFAULT; 216 m_TXTCache.ZapSubpageManual = false; 217 m_TXTCache.PageUpdate = false; 218 m_TXTCache.ADIP_PgMax = -1; 219 m_TXTCache.BTTok = false; 220 m_TXTCache.CachedPages = 0; 221 m_TXTCache.PageReceiving = -1; 222 m_TXTCache.Page = 0x100; 223 m_TXTCache.SubPage = m_TXTCache.SubPageTable[m_TXTCache.Page]; 224 m_TXTCache.line30 = ""; 225 if (m_TXTCache.SubPage == 0xff) 226 m_TXTCache.SubPage = 0; 227} 228 229void CDVDTeletextData::Process() 230{ 231 int b1, b2, b3, b4; 232 int packet_number; 233 TextPageinfo_t *pageinfo_thread; 234 unsigned char vtxt_row[42]; 235 unsigned char pagedata[9][23*40]; 236 unsigned char magazine = 0xff; 237// int doupdate = 0; 238 239 CLog::Log(LOGNOTICE, "running thread: CDVDTeletextData"); 240 241 while (!m_bStop) 242 { 243 CDVDMsg* pMsg; 244 int iPriority = (m_speed == DVD_PLAYSPEED_PAUSE) ? 1 : 0; 245 MsgQueueReturnCode ret = m_messageQueue.Get(&pMsg, 2000, iPriority); 246 247 if (ret == MSGQ_TIMEOUT) 248 { 249 /* Timeout for Teletext is not a bad thing, so we continue without error */ 250 continue; 251 } 252 253 if (MSGQ_IS_ERROR(ret)) 254 { 255 CLog::Log(LOGERROR, "Got MSGQ_ABORT or MSGO_IS_ERROR return true (%i)", ret); 256 break; 257 } 258 259 if (pMsg->IsType(CDVDMsg::DEMUXER_PACKET)) 260 { 261 CSingleLock lock(m_critSection); 262 263 DemuxPacket* pPacket = ((CDVDMsgDemuxerPacket*)pMsg)->GetPacket(); 264 uint8_t *Datai = pPacket->pData; 265 int rows = (pPacket->iSize - 1) / 46; 266 267 /* Is it a ITU-R System B Teletext stream in acc. to EN 300 472 */ 268 if (Datai[0] >= 0x10 && Datai[0] <= 0x1F) /* Check we have a valid data identifier */ 269 { 270 /* Go thru the pages stored inside this frame */ 271 for (int row=0; row < rows; row++) 272 { 273 uint8_t *vtx_rowbyte = &Datai[(row*46)+1]; 274 275 /* Check for valid data_unit_id */ 276 if ((vtx_rowbyte[0] == 0x02 || vtx_rowbyte[0] == 0x03) && (vtx_rowbyte[1] == 0x2C)) 277 { 278 /* clear rowbuffer */ 279 /* convert row from lsb to msb (begin with magazin number) */ 280 for (int i = 4; i < 46; i++) 281 { 282 uint8_t upper = (vtx_rowbyte[i] >> 4) & 0xf; 283 uint8_t lower = vtx_rowbyte[i] & 0xf; 284 vtxt_row[i-4] = (rev_lut[upper]) | (rev_lut[lower+16]); 285 } 286 287 /* get packet number */ 288 b1 = dehamming[vtxt_row[0]]; 289 b2 = dehamming[vtxt_row[1]]; 290 291 if (b1 == 0xFF || b2 == 0xFF) 292 continue; 293 294 b1 &= 8; 295 296 /* get packet and magazine number */ 297 packet_number = b1>>3 | b2<<1; 298 magazine = dehamming[vtxt_row[0]] & 7; 299 if (!magazine) magazine = 8; 300 301 if (packet_number == 0 && m_TXTCache.CurrentPage[magazine] != -1 && m_TXTCache.CurrentSubPage[magazine] != -1) 302 SavePage(m_TXTCache.CurrentPage[magazine], m_TXTCache.CurrentSubPage[magazine], pagedata[magazine]); 303 304 /* analyze row */ 305 if (packet_number == 0) 306 { 307 /* get pagenumber */ 308 b2 = dehamming[vtxt_row[3]]; 309 b3 = dehamming[vtxt_row[2]]; 310 311 if (b2 == 0xFF || b3 == 0xFF) 312 { 313 m_TXTCache.CurrentPage[magazine] = m_TXTCache.PageReceiving = -1; 314 continue; 315 } 316 317 m_TXTCache.CurrentPage[magazine] = m_TXTCache.PageReceiving = magazine<<8 | b2<<4 | b3; 318 319 if (b2 == 0x0f && b3 == 0x0f) 320 { 321 m_TXTCache.CurrentSubPage[magazine] = -1; /* ?ff: ignore data transmissions */ 322 continue; 323 } 324 325 /* get subpagenumber */ 326 b1 = dehamming[vtxt_row[7]]; 327 b2 = dehamming[vtxt_row[6]]; 328 b3 = dehamming[vtxt_row[5]]; 329 b4 = dehamming[vtxt_row[4]]; 330 331 if (b1 == 0xFF || b2 == 0xFF || b3 == 0xFF || b4 == 0xFF) 332 { 333 m_TXTCache.CurrentSubPage[magazine] = -1; 334 continue; 335 } 336 337 b1 &= 3; 338 b3 &= 7; 339 340 if (IsDec(m_TXTCache.PageReceiving)) /* ignore other subpage bits for hex pages */ 341 m_TXTCache.CurrentSubPage[magazine] = b3<<4 | b4; 342 else 343 m_TXTCache.CurrentSubPage[magazine] = b4; /* max 16 subpages for hex pages */ 344 345 /* store current subpage for this page */ 346 m_TXTCache.SubPageTable[m_TXTCache.CurrentPage[magazine]] = m_TXTCache.CurrentSubPage[magazine]; 347 348 AllocateCache(magazine); 349 LoadPage(m_TXTCache.CurrentPage[magazine], m_TXTCache.CurrentSubPage[magazine], pagedata[magazine]); 350 pageinfo_thread = &(m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]]->pageinfo); 351 if (!pageinfo_thread) 352 continue; 353 354 if ((m_TXTCache.PageReceiving & 0xff) == 0xfe) /* ?fe: magazine organization table (MOT) */ 355 pageinfo_thread->function = FUNC_MOT; 356 357 /* check controlbits */ 358 if (dehamming[vtxt_row[5]] & 8) /* C4 -> erase page */ 359 { 360 memset(m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]]->data, ' ', 23*40); 361 memset(pagedata[magazine],' ', 23*40); 362 } 363// if (dehamming[vtxt_row[9]] & 8) /* C8 -> update page */ 364// doupdate = m_TXTCache.PageReceiving; 365 366 pageinfo_thread->boxed = !!(dehamming[vtxt_row[7]] & 0x0c); 367 368 /* get country control bits */ 369 b1 = dehamming[vtxt_row[9]]; 370 if (b1 != 0xFF) 371 { 372 pageinfo_thread->nationalvalid = 1; 373 pageinfo_thread->national = rev_lut[b1] & 0x07; 374 } 375 376 if (dehamming[vtxt_row[7]] & 0x08)// subtitle page 377 { 378 int i = 0, found = -1, use = -1; 379 for (; i < 8; i++) 380 { 381 if (use == -1 && !m_TXTCache.SubtitlePages[i].page) 382 use = i; 383 else if (m_TXTCache.SubtitlePages[i].page == m_TXTCache.PageReceiving) 384 { 385 found = i; 386 use = i; 387 break; 388 } 389 } 390 if (found == -1 && use != -1) 391 m_TXTCache.SubtitlePages[use].page = m_TXTCache.PageReceiving; 392 if (use != -1) 393 m_TXTCache.SubtitlePages[use].language = CountryConversionTable[pageinfo_thread->national]; 394 } 395 396 /* check parity, copy line 0 to cache (start and end 8 bytes are not needed and used otherwise) */ 397 unsigned char *p = m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]]->p0; 398 for (int i = 10; i < 42-8; i++) 399 *p++ = deparity[vtxt_row[i]]; 400 401 if (!IsDec(m_TXTCache.PageReceiving)) 402 continue; /* valid hex page number: just copy headline, ignore TimeString */ 403 404 /* copy TimeString */ 405 p = m_TXTCache.TimeString; 406 for (int i = 42-8; i < 42; i++) 407 *p++ = deparity[vtxt_row[i]]; 408 } 409 else if (packet_number == 29 && dehamming[vtxt_row[2]]== 0) /* packet 29/0 replaces 28/0 for a whole magazine */ 410 { 411 Decode_p2829(vtxt_row, &(m_TXTCache.astP29[magazine])); 412 } 413 else if (m_TXTCache.CurrentPage[magazine] != -1 && m_TXTCache.CurrentSubPage[magazine] != -1) 414 /* packet>0, 0 has been correctly received, buffer allocated */ 415 { 416 pageinfo_thread = &(m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]]->pageinfo); 417 if (!pageinfo_thread) 418 continue; 419 420 /* pointer to current info struct */ 421 if (packet_number <= 25) 422 { 423 unsigned char *p = NULL; 424 if (packet_number < 24) 425 { 426 p = pagedata[magazine] + 40*(packet_number-1); 427 } 428 else 429 { 430 if (!(pageinfo_thread->p24)) 431 pageinfo_thread->p24 = (unsigned char*) calloc(2, 40); 432 if (pageinfo_thread->p24) 433 p = pageinfo_thread->p24 + (packet_number - 24) * 40; 434 } 435 if (p) 436 { 437 if (IsDec(m_TXTCache.CurrentPage[magazine])) 438 { 439 for (int i = 2; i < 42; i++) 440 { 441 *p++ = vtxt_row[i] & 0x7f; /* allow values with parity errors as some channels don't care :( */ 442 } 443 } 444 else if ((m_TXTCache.CurrentPage[magazine] & 0xff) == 0xfe) 445 { 446 for (int i = 2; i < 42; i++) 447 { 448 *p++ = dehamming[vtxt_row[i]]; /* decode hamming 8/4 */ 449 } 450 } 451 else /* other hex page: no parity check, just copy */ 452 memcpy(p, &vtxt_row[2], 40); 453 } 454 } 455 else if (packet_number == 27) 456 { 457 int descode = dehamming[vtxt_row[2]]; /* designation code (0..15) */ 458 if (descode == 0xff) 459 continue; 460 461 if (descode == 0) // reading FLOF-Pagelinks 462 { 463 b1 = dehamming[vtxt_row[0]]; 464 if (b1 != 0xff) 465 { 466 b1 &= 7; 467 468 for (int i = 0; i < FLOFSIZE; i++) 469 { 470 b2 = dehamming[vtxt_row[4+i*6]]; 471 b3 = dehamming[vtxt_row[3+i*6]]; 472 473 if (b2 != 0xff && b3 != 0xff) 474 { 475 b4 = ((b1 ^ (dehamming[vtxt_row[8+i*6]]>>1)) & 6) | ((b1 ^ (dehamming[vtxt_row[6+i*6]]>>3)) & 1); 476 if (b4 == 0) 477 b4 = 8; 478 if (b2 <= 9 && b3 <= 9) 479 m_TXTCache.FlofPages[m_TXTCache.CurrentPage[magazine] ][i] = b4<<8 | b2<<4 | b3; 480 } 481 } 482 483 /* copy last 2 links to ADIPTable for TOP-Index */ 484 if (pageinfo_thread->p24) /* packet 24 received */ 485 { 486 int a, a1, e=39, l=3; 487 unsigned char *p = pageinfo_thread->p24; 488 do 489 { 490 for (; 491 l >= 2 && 0 == m_TXTCache.FlofPages[m_TXTCache.CurrentPage[magazine]][l]; 492 l--) 493 ; /* find used linkindex */ 494 for (; 495 e >= 1 && !isalnum(p[e]); 496 e--) 497 ; /* find end */ 498 for (a = a1 = e - 1; 499 a >= 0 && p[a] >= ' '; 500 a--) /* find start */ 501 if (p[a] > ' ') 502 a1 = a; /* first non-space */ 503 if (a >= 0 && l >= 2) 504 { 505 strncpy(m_TXTCache.ADIPTable[m_TXTCache.FlofPages[m_TXTCache.CurrentPage[magazine]][l]], (const char*) &p[a1], 12); 506 if (e-a1 < 11) 507 m_TXTCache.ADIPTable[m_TXTCache.FlofPages[m_TXTCache.CurrentPage[magazine]][l]][e-a1+1] = '\0'; 508 } 509 e = a - 1; 510 l--; 511 } while (l >= 2); 512 } 513 } 514 } 515 else if (descode == 4) /* level 2.5 links (ignore level 3.5 links of /4 and /5) */ 516 { 517 int i; 518 Textp27_t *p; 519 520 if (!pageinfo_thread->ext) 521 pageinfo_thread->ext = (TextExtData_t*) calloc(1, sizeof(TextExtData_t)); 522 if (!pageinfo_thread->ext) 523 continue; 524 if (!(pageinfo_thread->ext->p27)) 525 pageinfo_thread->ext->p27 = (Textp27_t*) calloc(4, sizeof(Textp27_t)); 526 if (!(pageinfo_thread->ext->p27)) 527 continue; 528 p = pageinfo_thread->ext->p27; 529 for (i = 0; i < 4; i++) 530 { 531 int d1 = CDVDTeletextTools::deh24(&vtxt_row[6*i + 3]); 532 int d2 = CDVDTeletextTools::deh24(&vtxt_row[6*i + 6]); 533 if (d1 < 0 || d2 < 0) 534 continue; 535 536 p->local = i & 0x01; 537 p->drcs = !!(i & 0x02); 538 p->l25 = !!(d1 & 0x04); 539 p->l35 = !!(d1 & 0x08); 540 p->page = 541 (((d1 & 0x000003c0) >> 6) | 542 ((d1 & 0x0003c000) >> (14-4)) | 543 ((d1 & 0x00003800) >> (11-8))) ^ 544 (dehamming[vtxt_row[0]] << 8); 545 if (p->page < 0x100) 546 p->page += 0x800; 547 p->subpage = d2 >> 2; 548 if ((p->page & 0xff) == 0xff) 549 p->page = 0; 550 else if (p->page > 0x899) 551 { 552 // workaround for crash on RTL Shop ... 553 // sorry.. i dont understand whats going wrong here :) 554 continue; 555 } 556 else if (m_TXTCache.astCachetable[p->page][0]) /* link valid && linked page cached */ 557 { 558 TextPageinfo_t *pageinfo_link = &(m_TXTCache.astCachetable[p->page][0]->pageinfo); 559 if (p->local) 560 pageinfo_link->function = p->drcs ? FUNC_DRCS : FUNC_POP; 561 else 562 pageinfo_link->function = p->drcs ? FUNC_GDRCS : FUNC_GPOP; 563 } 564 p++; /* */ 565 } 566 } 567 } 568 else if (packet_number == 26) 569 { 570 int descode = dehamming[vtxt_row[2]]; /* designation code (0..15) */ 571 if (descode == 0xff) 572 continue; 573 574 if (!pageinfo_thread->ext) 575 pageinfo_thread->ext = (TextExtData_t*) calloc(1, sizeof(TextExtData_t)); 576 if (!pageinfo_thread->ext) 577 continue; 578 if (!(pageinfo_thread->ext->p26[descode])) 579 pageinfo_thread->ext->p26[descode] = (unsigned char*) malloc(13 * 3); 580 if (pageinfo_thread->ext->p26[descode]) 581 memcpy(pageinfo_thread->ext->p26[descode], &vtxt_row[3], 13 * 3); 582 } 583 else if (packet_number == 28) 584 { 585 int descode = dehamming[vtxt_row[2]]; /* designation code (0..15) */ 586 587 if (descode == 0xff) 588 continue; 589 590 if (descode != 2) 591 { 592 int t1 = CDVDTeletextTools::deh24(&vtxt_row[7-4]); 593 pageinfo_thread->function = t1 & 0x0f; 594 if (!pageinfo_thread->nationalvalid) 595 { 596 pageinfo_thread->nationalvalid = 1; 597 pageinfo_thread->national = (t1>>4) & 0x07; 598 } 599 } 600 601 switch (descode) /* designation code */ 602 { 603 case 0: /* basic level 1 page */ 604 Decode_p2829(vtxt_row, &(pageinfo_thread->ext)); 605 break; 606 case 1: /* G0/G1 designation for older decoders, level 3.5: DCLUT4/16, colors for multicolored bitmaps */ 607 break; /* ignore */ 608 case 2: /* page key */ 609 break; /* ignore */ 610 case 3: /* types of PTUs in DRCS */ 611 break; /* TODO */ 612 case 4: /* CLUTs 0/1, only level 3.5 */ 613 break; /* ignore */ 614 default: 615 break; /* invalid, ignore */ 616 } /* switch designation code */ 617 } 618 else if (packet_number == 30) 619 { 620 m_TXTCache.line30 = ""; 621 for (int i=26-4; i <= 45-4; i++) /* station ID */ 622 m_TXTCache.line30.append(1, deparity[vtxt_row[i]]); 623 } 624 } 625 626 /* set update flag */ 627 if (m_TXTCache.CurrentPage[magazine] == m_TXTCache.Page && m_TXTCache.CurrentSubPage[magazine] != -1) 628 { 629 SavePage(m_TXTCache.CurrentPage[magazine], m_TXTCache.CurrentSubPage[magazine], pagedata[magazine]); 630 m_TXTCache.PageUpdate = true; 631// doupdate = 0; 632 if (!m_TXTCache.ZapSubpageManual) 633 m_TXTCache.SubPage = m_TXTCache.CurrentSubPage[magazine]; 634 } 635 } 636 } 637 } 638 } 639 else if (pMsg->IsType(CDVDMsg::PLAYER_SETSPEED)) 640 { 641 m_speed = static_cast<CDVDMsgInt*>(pMsg)->m_value; 642 } 643 else if (pMsg->IsType(CDVDMsg::GENERAL_FLUSH) 644 || pMsg->IsType(CDVDMsg::GENERAL_RESET)) 645 { 646 ResetTeletextCache(); 647 } 648 pMsg->Release(); 649 } 650} 651 652void CDVDTeletextData::OnExit() 653{ 654 CLog::Log(LOGNOTICE, "thread end: data_thread"); 655} 656 657void CDVDTeletextData::Flush() 658{ 659 if(!m_messageQueue.IsInited()) 660 return; 661 /* flush using message as this get's called from dvdplayer thread */ 662 /* and any demux packet that has been taken out of queue need to */ 663 /* be disposed of before we flush */ 664 m_messageQueue.Flush(); 665 m_messageQueue.Put(new CDVDMsg(CDVDMsg::GENERAL_FLUSH)); 666} 667 668void CDVDTeletextData::Decode_p2829(unsigned char *vtxt_row, TextExtData_t **ptExtData) 669{ 670 int bitsleft, colorindex; 671 unsigned char *p; 672 int t1 = CDVDTeletextTools::deh24(&vtxt_row[7-4]); 673 int t2 = CDVDTeletextTools::deh24(&vtxt_row[10-4]); 674 675 if (t1 < 0 || t2 < 0) 676 return; 677 678 if (!(*ptExtData)) 679 (*ptExtData) = (TextExtData_t*) calloc(1, sizeof(TextExtData_t)); 680 if (!(*ptExtData)) 681 return; 682 683 (*ptExtData)->p28Received = 1; 684 (*ptExtData)->DefaultCharset = (t1>>7) & 0x7f; 685 (*ptExtData)->SecondCharset = ((t1>>14) & 0x0f) | ((t2<<4) & 0x70); 686 (*ptExtData)->LSP = !!(t2 & 0x08); 687 (*ptExtData)->RSP = !!(t2 & 0x10); 688 (*ptExtData)->SPL25 = !!(t2 & 0x20); 689 (*ptExtData)->LSPColumns = (t2>>6) & 0x0f; 690 691 bitsleft = 8; /* # of bits not evaluated in val */ 692 t2 >>= 10; /* current data */ 693 p = &vtxt_row[13-4]; /* pointer to next data triplet */ 694 for (colorindex = 0; colorindex < 16; colorindex++) 695 { 696 if (bitsleft < 12) 697 { 698 t2 |= CDVDTeletextTools::deh24(p) << bitsleft; 699 if (t2 < 0) /* hamming error */ 700 break; 701 p += 3; 702 bitsleft += 18; 703 } 704 (*ptExtData)->bgr[colorindex] = t2 & 0x0fff; 705 bitsleft -= 12; 706 t2 >>= 12; 707 } 708 if (t2 < 0 || bitsleft != 14) 709 { 710 (*ptExtData)->p28Received = 0; 711 return; 712 } 713 (*ptExtData)->DefScreenColor = t2 & 0x1f; 714 t2 >>= 5; 715 (*ptExtData)->DefRowColor = t2 & 0x1f; 716 (*ptExtData)->BlackBgSubst = !!(t2 & 0x20); 717 t2 >>= 6; 718 (*ptExtData)->ColorTableRemapping = t2 & 0x07; 719} 720 721void CDVDTeletextData::SavePage(int p, int sp, unsigned char* buffer) 722{ 723 CSingleLock lock(m_critSection); 724 TextCachedPage_t* pg = m_TXTCache.astCachetable[p][sp]; 725 if (!pg) 726 { 727 CLog::Log(LOGERROR, "CDVDTeletextData: trying to save a not allocated page!!"); 728 return; 729 } 730 731 memcpy(pg->data, buffer, 23*40); 732} 733 734void CDVDTeletextData::LoadPage(int p, int sp, unsigned char* buffer) 735{ 736 CSingleLock lock(m_critSection); 737 TextCachedPage_t* pg = m_TXTCache.astCachetable[p][sp]; 738 if (!pg) 739 { 740 CLog::Log(LOGERROR, "CDVDTeletextData: trying to load a not allocated page!!"); 741 return; 742 } 743 744 memcpy(buffer, pg->data, 23*40); 745} 746 747void CDVDTeletextData::ErasePage(int magazine) 748{ 749 CSingleLock lock(m_critSection); 750 TextCachedPage_t* pg = m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]]; 751 if (pg) 752 { 753 memset(&(pg->pageinfo), 0, sizeof(TextPageinfo_t)); /* struct pageinfo */ 754 memset(pg->p0, ' ', 24); 755 memset(pg->data, ' ', 23*40); 756 } 757} 758 759void CDVDTeletextData::AllocateCache(int magazine) 760{ 761 /* check cachetable and allocate memory if needed */ 762 if (m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]] == 0) 763 { 764 m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]] = new TextCachedPage_t; 765 if (m_TXTCache.astCachetable[m_TXTCache.CurrentPage[magazine]][m_TXTCache.CurrentSubPage[magazine]] ) 766 { 767 ErasePage(magazine); 768 m_TXTCache.CachedPages++; 769 } 770 } 771}