2 Copyright 2008 Mark Calderbank
4 This file is part of VOMP.
6 VOMP is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 VOMP is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with VOMP; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 /* Sections of code and general methods adopted from VDR version 1.6.0
21 * dvbsubtitle.c (GPL version 2 or later)
22 * Original author: Marco Schluessler <marco@lordzodiac.de>
23 * With some input from the "subtitle plugin"
24 * by Pekka Virtanen <pekka.virtanen@sci.fi>
27 /* Reference ETSI EN 300 743 V1.3.1 (2006-11) */
29 #include "dvbsubtitles.h"
31 #include "osdreceiver.h"
35 DVBSubtitleCLUT::DVBSubtitleCLUT()
41 for (int i = 0; i < 4; ++i) palette2.setColour(i, defaultPalette2[i]);
42 for (int i = 0; i < 16; ++i) palette4.setColour(i, defaultPalette4[i]);
43 for (int i = 0; i < 256; ++i) palette8.setColour(i, defaultPalette8[i]);
46 const ULONG DVBSubtitleCLUT::defaultPalette2[4] = {
47 0x00000000, 0xFFFFFFFF, 0xFF000000, 0xFF808080
50 const ULONG DVBSubtitleCLUT::defaultPalette4[16] = {
51 0x00000000, 0xFFFF0000, 0xFF00FF00, 0xFFFFFF00,
52 0xFF0000FF, 0xFFFF00FF, 0xFF00FFFF, 0xFFFFFFFF,
53 0xFF000000, 0xFF800000, 0xFF008000, 0xFF808000,
54 0xFF000080, 0xFF800080, 0xFF008080, 0xFF808080
57 const ULONG DVBSubtitleCLUT::defaultPalette8[256] = {
58 0x00000000, 0x40FF0000, 0x4000FF00, 0x40FFFF00, // 0000 0000
59 0x400000FF, 0x40FF00FF, 0x4000FFFF, 0x40FFFFFF, // 0000 0100
60 0x80000000, 0x80550000, 0x80005500, 0x80555500, // 0000 1000
61 0x80000055, 0x80550055, 0x80005555, 0x80555555, // 0000 1100
62 0xFFAA0000, 0xFFFF0000, 0xFFAA5500, 0xFFFF5500, // 0001 0000
63 0xFFAA0055, 0xFFFF0055, 0xFFAA5555, 0xFFFF5555, // 0001 0100
64 0x80AA0000, 0x80FF0000, 0x80AA5500, 0x80FF5500, // 0001 1000
65 0x80AA0055, 0x80FF0055, 0x80AA5555, 0x80FF5555, // 0001 1100
66 0xFF00AA00, 0xFF55AA00, 0xFF00FF00, 0xFF55FF00, // 0010 0000
67 0xFF00AA55, 0xFF55AA55, 0xFF00FF55, 0xFF55FF55, // 0010 0100
68 0x8000AA00, 0x8055AA00, 0x8000FF00, 0x8055FF00, // 0010 1000
69 0x8000AA55, 0x8055AA55, 0x8000FF55, 0x8055FF55, // 0010 1100
70 0xFFAAAA00, 0xFFFFAA00, 0xFFAAFF00, 0xFFFFFF00, // 0011 0000
71 0xFFAAAA55, 0xFFFFAA55, 0xFFAAFF55, 0xFFFFFF55, // 0011 0100
72 0x80AAAA00, 0x80FFAA00, 0x80AAFF00, 0x80FFFF00, // 0011 1000
73 0x80AAAA55, 0x80FFAA55, 0x80AAFF55, 0x80FFFF55, // 0011 1100
74 0xFF0000AA, 0xFF5500AA, 0xFF0055AA, 0xFF5555AA, // 0100 0000
75 0xFF0000FF, 0xFF5500FF, 0xFF0055FF, 0xFF5555FF, // 0100 0100
76 0x800000AA, 0x805500AA, 0x800055AA, 0x805555AA, // 0100 1000
77 0x800000FF, 0x805500FF, 0x800055FF, 0x805555FF, // 0100 1100
78 0xFFAA00AA, 0xFFFF00AA, 0xFFAA55AA, 0xFFFF55AA, // 0101 0000
79 0xFFAA00FF, 0xFFFF00FF, 0xFFAA55FF, 0xFFFF55FF, // 0101 0100
80 0x80AA00AA, 0x80FF00AA, 0x80AA55AA, 0x80FF55AA, // 0101 1000
81 0x80AA00FF, 0x80FF00FF, 0x80AA55FF, 0x80FF55FF, // 0101 1100
82 0xFF00AAAA, 0xFF55AAAA, 0xFF00FFAA, 0xFF55FFAA, // 0110 0000
83 0xFF00AAFF, 0xFF55AAFF, 0xFF00FFFF, 0xFF55FFFF, // 0110 0100
84 0x8000AAAA, 0x8055AAAA, 0x8000FFAA, 0x8055FFAA, // 0110 1000
85 0x8000AAFF, 0x8055AAFF, 0x8000FFFF, 0x8055FFFF, // 0110 1100
86 0xFFAAAAAA, 0xFFFFAAAA, 0xFFAAFFAA, 0xFFFFFFAA, // 0111 0000
87 0xFFAAAAFF, 0xFFFFAAFF, 0xFFAAFFFF, 0xFFFFFFFF, // 0111 0100
88 0x80AAAAAA, 0x80FFAAAA, 0x80AAFFAA, 0x80FFFFAA, // 0111 1000
89 0x80AAAAFF, 0x80FFAAFF, 0x80AAFFFF, 0x80FFFFFF, // 0111 1100
90 0xFF808080, 0xFFAA8080, 0xFF80AA80, 0xFFAAAA80, // 1000 0000
91 0xFF8080AA, 0xFFAA80AA, 0xFF80AAAA, 0xFFAAAAAA, // 1000 0100
92 0xFF000000, 0xFF2A0000, 0xFF002A00, 0xFF2A2A00, // 1000 1000
93 0xFF00002A, 0xFF2A002A, 0xFF002A2A, 0xFF2A2A2A, // 1000 1100
94 0xFFD58080, 0xFFFF8080, 0xFFD5AA80, 0xFFFFAA80, // 1001 0000
95 0xFFD580AA, 0xFFFF80AA, 0xFFD5AAAA, 0xFFFFAAAA, // 1001 0100
96 0xFF550000, 0xFF7F0000, 0xFF552A00, 0xFF7F2A00, // 1001 1000
97 0xFF55002A, 0xFF7F002A, 0xFF552A2A, 0xFF7F2A2A, // 1001 1100
98 0xFF80D580, 0xFFAAD580, 0xFF80FF80, 0xFFAAFF80, // 1010 0000
99 0xFF80D5AA, 0xFFAAD5AA, 0xFF80FFAA, 0xFFAAFFAA, // 1010 0100
100 0xFF005500, 0xFF2A5500, 0xFF007F00, 0xFF2A7F00, // 1010 1000
101 0xFF00552A, 0xFF2A552A, 0xFF007F2A, 0xFF2A7F2A, // 1010 1100
102 0xFFD5D580, 0xFFFFD580, 0xFFD5FF80, 0xFFFFFF80, // 1011 0000
103 0xFFD5D5AA, 0xFFFFD5AA, 0xFFD5FFAA, 0xFFFFFFAA, // 1011 0100
104 0xFF555500, 0xFF7F5500, 0xFF557F00, 0xFF7F7F00, // 1011 1000
105 0xFF55552A, 0xFF7F552A, 0xFF557F2A, 0xFF7F7F2A, // 1011 1100
106 0xFF8080D5, 0xFFAA80D5, 0xFF80AAD5, 0xFFAAAAD5, // 1100 0000
107 0xFF8080FF, 0xFFAA80FF, 0xFF80AAFF, 0xFFAAAAFF, // 1100 0100
108 0xFF000055, 0xFF2A0055, 0xFF002A55, 0xFF2A2A55, // 1100 1000
109 0xFF00007F, 0xFF2A007F, 0xFF002A7F, 0xFF2A2A7F, // 1100 1100
110 0xFFD580D5, 0xFFFF80D5, 0xFFD5AAD5, 0xFFFFAAD5, // 1101 0000
111 0xFFD580FF, 0xFFFF80FF, 0xFFD5AAFF, 0xFFFFAAFF, // 1101 0100
112 0xFF550055, 0xFF7F0055, 0xFF552A55, 0xFF7F2A55, // 1101 1000
113 0xFF55007F, 0xFF7F007F, 0xFF552A7F, 0xFF7F2A7F, // 1101 1100
114 0xFF80D5D5, 0xFFAAD5D5, 0xFF80FFD5, 0xFFAAFFD5, // 1110 0000
115 0xFF80D5FF, 0xFFAAD5FF, 0xFF80FFFF, 0xFFAAFFFF, // 1110 0100
116 0xFF005555, 0xFF2A5555, 0xFF007F55, 0xFF2A7F55, // 1110 1000
117 0xFF00557F, 0xFF2A557F, 0xFF007F7F, 0xFF2A7F7F, // 1110 1100
118 0xFFD5D5D5, 0xFFFFD5D5, 0xFFD5FFD5, 0xFFFFFFD5, // 1111 0000
119 0xFFD5D5FF, 0xFFFFD5FF, 0xFFD5FFFF, 0xFFFFFFFF, // 1111 0100
120 0xFF555555, 0xFF7F5555, 0xFF557F55, 0xFF7F7F55, // 1111 1000
121 0xFF55557F, 0xFF7F557F, 0xFF557F7F, 0xFF7F7F7F, // 1111 1100
124 void DVBSubtitleCLUT::setEntry(int bpp, UINT index, UCHAR Y, UCHAR Cr, UCHAR Cb, UCHAR T)
128 if (Y2 == 0) { Y2 = 16; A = 0; } else A = 255 - T;
131 case 2: palette2.setYCrCbA(index, Y2, Cr, Cb, A); break;
132 case 4: palette4.setYCrCbA(index, Y2, Cr, Cb, A); break;
133 case 8: palette8.setYCrCbA(index, Y2, Cr, Cb, A); break;
137 const Palette& DVBSubtitleCLUT::getPalette(int bpp) const
141 case 2: return palette2; break;
142 case 4: return palette4; break;
143 default: return palette8; break;
147 DVBSubtitleRegion::DVBSubtitleRegion()
153 void DVBSubtitleRegion::setDepth(UINT d)
155 if (d < 4) palette.setBpp(1 << d);
158 DVBSubtitlePage::DVBSubtitlePage()
164 serviceAcquired(false)
167 void DVBSubtitlePage::setState(UCHAR s)
171 serviceAcquired = true;
172 if (state == 2) // Mode change
174 serviceAcquired = true;
177 currentDisplay.clear();
178 pendingDisplay.clear();
183 void DVBSubtitlePage::updateRegionPalettes(const DVBSubtitleCLUT& clut)
185 RegionMap::iterator region;
186 for (region = regions.begin(); region != regions.end(); ++region)
187 if (region->second.CLUTid == clut.CLUTid)
188 region->second.palette = clut.getPalette(region->second.palette.getBpp());
191 DVBSubtitleDisplayDefinition::DVBSubtitleDisplayDefinition()
197 class DVBSubtitleObject
201 UCHAR nonModColourFlag;
204 DVBSubtitleRegion* region;
205 UINT horizontalPosition;
206 UINT verticalPosition;
208 typedef std::vector<struct RegionRef> UseList;
213 void initMapTables();
214 UCHAR* currentMapTable;
216 void drawLine(const RegionRef& use, UINT x, UINT y, UCHAR colour, UINT len);
217 UCHAR get2Bits(const UCHAR* data, UINT& index);
218 UCHAR get4Bits(const UCHAR* data, UINT& index);
219 bool decode2BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y);
220 bool decode4BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y);
221 bool decode8BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y);
223 DVBSubtitleObject(UINT id = 0);
224 void setNonModColourFlag(UCHAR flag) { nonModColourFlag = flag; }
225 void findWhereUsed(DVBSubtitlePage&);
226 void decodeSubBlock(const UCHAR* data, UINT length, bool even);
229 DVBSubtitleObject::DVBSubtitleObject(UINT id)
232 currentMapTable(NULL),
238 void DVBSubtitleObject::initMapTables()
240 map2to4[0] = 0x0; map2to4[1] = 0x7; map2to4[2] = 0x8; map2to4[3] = 0xF;
241 map2to8[0] = 0x00; map2to8[1] = 0x77; map2to8[2] = 0x88; map2to8[3] = 0xFF;
242 map4to8[0] = 0x00; map4to8[1] = 0x11; map4to8[2] = 0x22; map4to8[3] = 0x33;
243 map4to8[4] = 0x44; map4to8[5] = 0x55; map4to8[6] = 0x66; map4to8[7] = 0x77;
244 map4to8[8] = 0x88; map4to8[9] = 0x99; map4to8[10]= 0xAA; map4to8[11]= 0xBB;
245 map4to8[12]= 0xCC; map4to8[13]= 0xDD; map4to8[14]= 0xEE; map4to8[15]= 0xFF;
248 void DVBSubtitleObject::findWhereUsed(DVBSubtitlePage& page)
251 DVBSubtitlePage::RegionMap::iterator i;
252 for (i = page.regions.begin(); i != page.regions.end(); ++i)
254 DVBSubtitleRegion::ObjectList::iterator j;
255 for (j = i->second.objects.begin(); j != i->second.objects.end(); ++j)
257 if (j->objectID == objectID)
259 struct RegionRef usage;
260 usage.region = &(i->second);
261 usage.horizontalPosition = j->horizontalPosition;
262 usage.verticalPosition = j->verticalPosition;
263 useList.push_back(usage);
269 void DVBSubtitleObject::drawLine(const RegionRef& use, UINT x, UINT y,
270 UCHAR colour, UINT len)
272 if (nonModColourFlag && colour == 1) return;
273 x += use.horizontalPosition;
274 y += use.verticalPosition;
275 for (UINT pos = x; pos < x + len; ++pos)
276 use.region->setIndex(pos, y, colour);
279 UCHAR DVBSubtitleObject::get2Bits(const UCHAR* data, UINT& index)
281 UCHAR result = data[index];
288 return (result >> bitPos) & 0x03;
291 UCHAR DVBSubtitleObject::get4Bits(const UCHAR* data, UINT& index)
293 UCHAR result = data[index];
304 return result & 0x0F;
307 bool DVBSubtitleObject::decode2BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y)
309 UINT rl = 0, colour = 0;
310 UCHAR code = get2Bits(data, index);
318 code = get2Bits(data, index);
319 if (code & 2) // Switch 1
321 rl = ((code & 1) << 2) + get2Bits(data, index) + 3;
322 colour = get2Bits(data, index);
324 else if (code & 1) rl = 1; // Colour 0
327 code = get2Bits(data, index);
331 return false; // end of 2-bit/pixel_code_string
336 rl = (get2Bits(data, index) << 2) + get2Bits(data, index) + 12;
337 colour = get2Bits(data, index);
340 rl = (get2Bits(data, index) << 6) + (get2Bits(data, index) << 4) +
341 (get2Bits(data, index) << 2) + get2Bits(data, index) + 29;
342 colour = get2Bits(data, index);
347 drawLine(use, x, y, colour, rl);
352 bool DVBSubtitleObject::decode4BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y)
354 UINT rl = 0, colour = 0;
355 UCHAR code = get4Bits(data, index);
363 code = get4Bits(data, index);
364 if (code & 8) // Switch 1
366 if (code & 4) // Switch 2
368 switch (code & 3) // Switch 3
377 rl = get4Bits(data, index) + 9;
378 colour = get4Bits(data, index);
381 rl = (get4Bits(data, index) << 4) + get4Bits(data, index) + 25;
382 colour = get4Bits(data, index);
389 colour = get4Bits(data, index);
394 if (!code) return false; // end of 4-bit/pixel_code_string
395 rl = code + 2; // Colour 0
398 drawLine(use, x, y, colour, rl);
403 bool DVBSubtitleObject::decode8BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y)
405 UINT rl = 0, colour = 0;
406 UCHAR code = data[index++];
414 code = data[index++];
417 colour = data[index++];
419 return false; // else colour 0
421 drawLine(use, x, y, colour, rl);
426 void DVBSubtitleObject::decodeSubBlock(const UCHAR* data, UINT length, bool even)
428 UseList::const_iterator use;
429 for (use = useList.begin(); use != useList.end(); ++use)
431 UINT x = 0; UINT y = even ? 0 : 1; UINT index = 0;
432 while (index < length)
434 switch (data[index++])
437 switch (use->region->palette.getBpp())
439 case 8: currentMapTable = map2to8; break;
440 case 4: currentMapTable = map2to4; break;
441 default: currentMapTable = NULL;
444 while (decode2BppCodeString(data, index, *use,x,y) && index < length);
445 if (!bitPos) index++;
448 if (use->region->palette.getBpp() == 8)
449 currentMapTable = map4to8;
451 currentMapTable = NULL;
453 while (decode4BppCodeString(data, index, *use,x,y) && index < length);
454 if (!bitPos) index++;
457 while (decode8BppCodeString(data, index, *use,x,y) && index < length);
460 map2to4[0] = data[index] >> 4;
461 map2to4[1] = data[index++] & 0x0F;
462 map2to4[2] = data[index] >> 4;
463 map2to4[3] = data[index++] & 0x0F;
466 for (int i = 0; i < 4; i++) map2to8[i] = data[index++];
469 for (int i = 0; i < 16; i++) map4to8[i] = data[index++];
479 static ULLONG PTSDifference(ULLONG pts1, ULLONG pts2)
481 // Assume pts1, pts2 < 2^33; calculate pts1 - pts2
485 return (1LL<<33) + pts1 - pts2;
488 DVBSubtitles::DVBSubtitles(OSDReceiver* tosd)
490 pageOnDisplay(65536),
496 pthread_mutex_init(&input_mutex, NULL);
497 pthread_mutex_init(&output_mutex, NULL);
499 input_mutex=CreateMutex(NULL,FALSE,NULL);
500 output_mutex=CreateMutex(NULL,FALSE,NULL);
504 void DVBSubtitles::put(const PESPacket& packet)
509 if (packet.getPTS() != PESPacket::PTS_INVALID)
511 worklist.push_back(packet);
518 bool DVBSubtitles::decodePacket(const PESPacket& packet)
520 const UCHAR* data = packet.getData();
521 UINT packetSize = packet.getSize();
522 if (packetSize < 9) return false;
523 UINT segmentOffset = data[8] + 11;
524 while (packetSize > segmentOffset)
526 if (data[segmentOffset] == 0xFF) return true; // 'End of PES' marker
527 if (data[segmentOffset] != 0x0F) return false; // Out of sync
528 if (packetSize <= segmentOffset + 5) return false; // Packet truncated
529 UCHAR segmentType = data[segmentOffset + 1];
530 UINT pageID = (data[segmentOffset + 2] << 8)
531 + data[segmentOffset + 3];
532 UINT segmentLength = (data[segmentOffset + 4] << 8)
533 + data[segmentOffset + 5];
534 if (pageOnDisplay == 65536) pageOnDisplay = pageID;
535 if (pageOnDisplay != pageID) return false;
536 if (packetSize <= segmentOffset + 5 + segmentLength) return false;
537 const UCHAR* segmentData = &data[segmentOffset + 6];
538 pages[pageID]; // Create this page if it doesn't exist
539 PageMap::iterator pageEntry = pages.find(pageID);
540 if (pageEntry == pages.end()) return false;
541 DVBSubtitlePage& page = pageEntry->second;
542 if (packet.getPTS() != PESPacket::PTS_INVALID) page.pts = packet.getPTS();
545 case 0x10: // Page composition
547 if (segmentLength < 2) break;
548 page.setState((segmentData[1] & 0x0C) >> 2);
549 if (!page.serviceAcquired) break;
550 UCHAR pageVersion = (segmentData[1] & 0xF0) >> 4;
551 if (pageVersion == page.version) break; // No update
552 page.version = pageVersion;
553 page.timeout = segmentData[0];
554 page.pendingDisplay.clear();
556 while (segmentLength > parsePos + 5)
558 UCHAR regionID = segmentData[parsePos];
559 page.regions[regionID]; // Create the region if it doesn't exist
560 DVBSubtitlePage::Coords coords;
561 coords.x = (segmentData[parsePos + 2] << 8) +
562 segmentData[parsePos + 3];
563 coords.y = (segmentData[parsePos + 4] << 8) +
564 segmentData[parsePos + 5];
565 page.pendingDisplay[regionID] = coords;
570 case 0x11: // Region composition
572 if (segmentLength < 10) break;
573 UCHAR regionID = segmentData[0];
574 page.regions[regionID]; // Create the region if it doesn't exist
575 DVBSubtitlePage::RegionMap::iterator regionEntry;
576 regionEntry = page.regions.find(regionID);
577 if (regionEntry == page.regions.end()) return false;
578 DVBSubtitleRegion& region = regionEntry->second;
579 UCHAR regionVersion = (segmentData[1] & 0xF0) >> 4;
580 if (regionVersion == region.version) break; // No update
581 region.version = regionVersion;
582 bool regionFillFlag = (segmentData[1] & 0x08) >> 3;
583 UINT regionWidth = (segmentData[2] << 8) + segmentData[3];
584 UINT regionHeight = (segmentData[4] << 8) + segmentData[5];
585 region.setSize(regionWidth, regionHeight);
586 region.level = (segmentData[6] & 0xE0) >> 5;
587 region.setDepth((segmentData[6] & 0x1C) >> 2);
588 region.CLUTid = segmentData[7];
589 page.CLUTs[region.CLUTid]; // Create the CLUT if it doesn't exist
590 DVBSubtitlePage::CLUTMap::iterator clut;
591 clut = page.CLUTs.find(region.CLUTid);
592 if (clut == page.CLUTs.end()) return false;
593 region.palette = clut->second.getPalette(region.palette.getBpp());
594 if (regionFillFlag) switch (region.palette.getBpp())
596 case 2: region.setAllIndices((segmentData[9] & 0x0C) >> 2); break;
597 case 4: region.setAllIndices((segmentData[9] & 0xF0) >> 4); break;
598 case 8: region.setAllIndices(segmentData[8]); break;
600 region.objects.clear();
602 while (segmentLength > parsePos + 5)
604 UINT objectID = (segmentData[parsePos] << 8) +
605 segmentData[parsePos + 1];
606 DVBSubtitleRegion::ObjectRef objref;
607 objref.objectID = objectID;
608 UINT objectType = (segmentData[parsePos + 2] & 0xC0) >> 6;
609 objref.horizontalPosition = ((segmentData[parsePos + 2] & 0x0F) << 8) +
610 segmentData[parsePos + 3];
611 objref.verticalPosition = ((segmentData[parsePos + 4] & 0x0F) << 8) +
612 segmentData[parsePos + 5];
613 if (objectType == 0) region.objects.push_back(objref);
618 case 0x12: // CLUT definition
620 if (segmentLength < 2) break;
621 UCHAR CLUTid = segmentData[0];
622 DVBSubtitlePage::CLUTMap::iterator clutEntry;
623 clutEntry = page.CLUTs.find(CLUTid);
624 if (clutEntry == page.CLUTs.end()) return false;
625 DVBSubtitleCLUT& clut = clutEntry->second;
626 clut.CLUTid = CLUTid;
627 UCHAR clutVersion = (segmentData[1] & 0xF0) >> 4;
628 if (clutVersion == clut.version) break; // No update
629 clut.version = clutVersion;
631 while (segmentLength > parsePos + 3)
633 UCHAR clutEntryID = segmentData[parsePos];
634 bool fullRangeFlag = segmentData[parsePos + 1] & 0x01;
638 if (segmentLength <= parsePos + 5) break;
639 Y = segmentData[parsePos + 2];
640 Cr = segmentData[parsePos + 3];
641 Cb = segmentData[parsePos + 4];
642 T = segmentData[parsePos + 5];
646 Y = segmentData[parsePos + 2] & 0xFC;
647 Cr = (segmentData[parsePos + 2] & 0x03) << 6;
648 Cr |= (segmentData[parsePos + 3] & 0xC0) >> 2;
649 Cb = (segmentData[parsePos + 3] & 0x3C) << 2;
650 T = (segmentData[parsePos + 3] & 0x03) << 6;
652 UCHAR entryFlags = segmentData[parsePos + 1];
653 if (entryFlags & 0x80) clut.setEntry(2, clutEntryID, Y,Cr,Cb,T);
654 if (entryFlags & 0x40) clut.setEntry(4, clutEntryID, Y,Cr,Cb,T);
655 if (entryFlags & 0x20) clut.setEntry(8, clutEntryID, Y,Cr,Cb,T);
656 parsePos += fullRangeFlag ? 6 : 4;
658 page.updateRegionPalettes(clut);
661 case 0x13: // Object data
663 if (segmentLength < 3) break;
664 UINT objectID = (segmentData[0] << 8) + segmentData[1];
665 DVBSubtitleObject object(objectID);
666 object.findWhereUsed(page);
667 UCHAR codingMethod = (segmentData[2] & 0x0C) >> 2;
668 object.setNonModColourFlag(segmentData[2] & 0x01);
669 if (codingMethod == 0x00) // Coding of pixels
671 if (segmentLength < 7) break;
672 UINT topFieldLen = (segmentData[3] << 8) + segmentData[4];
673 UINT bottomFieldLen = (segmentData[5] << 8) + segmentData[6];
674 if (segmentLength < 7 + topFieldLen + bottomFieldLen) break;
675 object.decodeSubBlock(segmentData + 7, topFieldLen, true);
677 object.decodeSubBlock(segmentData + 7 + topFieldLen,
678 bottomFieldLen, false);
680 object.decodeSubBlock(segmentData + 7, topFieldLen, false);
682 else if (codingMethod == 0x01) // Coded as a string of characters
686 case 0x14: {// Display definition
687 if (segmentLength<5) break;
688 UINT ddsversion=(segmentData[0]&0xf0)>>4;
689 if (ddsversion==dds.version) break; // no update ncessary
690 dds.version=ddsversion;
691 dds.displaywindow=!(!(segmentData[0]&0x08));
692 dds.framewidth=(segmentData[1] << 8) + segmentData[2];
693 dds.frameheight=(segmentData[3] << 8) + segmentData[4];
694 if (segmentLength<13) break;
695 if (dds.displaywindow) {
696 dds.windowx=(segmentData[4] << 8) + segmentData[5];
697 dds.windoww=(segmentData[6] << 8) + segmentData[7]-dds.windowx;
698 dds.windowy=(segmentData[8] << 8) + segmentData[9];
699 dds.windowh=(segmentData[10] << 8) + segmentData[11]-dds.windowy;
703 dds.windoww=dds.framewidth;
704 dds.windowh=dds.frameheight;
708 case 0x80: // End of display set
711 page.currentDisplay = page.pendingDisplay;
714 segmentOffset += (segmentLength + 6);
716 return false; // Fall through from while loop: we ran out of data
719 void DVBSubtitles::finishPage(const DVBSubtitlePage& page)
726 DVBSubtitlePage::DisplayMap::const_iterator i,j;
727 for (i = page.currentDisplay.begin(); i != page.currentDisplay.end(); ++i)
728 { // For each currently displayed region, if the region has been
729 // moved or removed, blank out its previous screen position
730 j = page.pendingDisplay.find(i->first);
731 if (j == page.pendingDisplay.end() ||
732 j->second.x != i->second.x ||
733 j->second.y != i->second.y)
735 DVBSubtitlePage::RegionMap::const_iterator region_iter;
736 region_iter = page.regions.find(i->first);
737 if (region_iter == page.regions.end()) continue;
738 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Clear region %d", i->first);
739 osd->clearOSDArea(i->second.x, i->second.y,
740 region_iter->second.getWidth(), region_iter->second.getHeight(),dds);
744 for (i = page.pendingDisplay.begin(); i != page.pendingDisplay.end(); ++i)
745 { // Display each pending region
746 DVBSubtitlePage::RegionMap::const_iterator region_iter;
747 region_iter = page.regions.find(i->first);
748 if (region_iter == page.regions.end()) continue;
749 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Display region %d", i->first);
750 osd->drawOSDBitmap(i->second.x, i->second.y, region_iter->second,dds);
754 void DVBSubtitles::lockInput()
757 pthread_mutex_lock(&input_mutex);
759 WaitForSingleObject(input_mutex, INFINITE);
763 void DVBSubtitles::unlockInput()
766 pthread_mutex_unlock(&input_mutex);
768 ReleaseMutex(input_mutex);
772 void DVBSubtitles::lockOutput()
775 pthread_mutex_lock(&output_mutex);
777 WaitForSingleObject(output_mutex, INFINITE);
781 void DVBSubtitles::unlockOutput()
784 pthread_mutex_unlock(&output_mutex);
786 ReleaseMutex(output_mutex);
790 int DVBSubtitles::start()
793 dds=DVBSubtitleDisplayDefinition();
796 return threadStart();
799 void DVBSubtitles::stop()
807 PageMap::const_iterator pageEntry = pages.find(pageOnDisplay);
808 if (pageEntry != pages.end())
810 const DVBSubtitlePage& page = pageEntry->second;
811 DVBSubtitlePage::DisplayMap::const_iterator i;
812 for (i = page.currentDisplay.begin(); i != page.currentDisplay.end(); ++i)
814 DVBSubtitlePage::RegionMap::const_iterator region_iter;
815 region_iter = page.regions.find(i->first);
816 if (region_iter == page.regions.end()) continue;
817 osd->clearOSDArea(i->second.x, i->second.y,
818 region_iter->second.getWidth(), region_iter->second.getHeight(),dds);
822 pageOnDisplay = 65536;
824 threadNudged = false;
827 void DVBSubtitles::show()
834 void DVBSubtitles::hide()
838 PageMap::const_iterator pageEntry = pages.find(pageOnDisplay);
839 if (pageEntry != pages.end())
841 const DVBSubtitlePage& page = pageEntry->second;
842 DVBSubtitlePage::DisplayMap::const_iterator i;
843 for (i = page.currentDisplay.begin(); i != page.currentDisplay.end(); ++i)
845 DVBSubtitlePage::RegionMap::const_iterator region_iter;
846 region_iter = page.regions.find(i->first);
847 if (region_iter == page.regions.end()) continue;
848 osd->clearOSDArea(i->second.x, i->second.y,
849 region_iter->second.getWidth(), region_iter->second.getHeight(),dds);
853 pageOnDisplay = 65536;
857 void DVBSubtitles::nudge()
860 pthread_mutex_lock(&threadCondMutex);
862 pthread_cond_signal(&threadCond);
863 pthread_mutex_unlock(&threadCondMutex);
865 WaitForSingleObject(threadCondMutex, INFINITE);
867 SetEvent(threadCond);
868 ReleaseMutex(threadCondMutex);
872 void DVBSubtitles::threadMethod()
874 struct timespec sleeptime;
875 sleeptime.tv_sec = 0;
876 sleeptime.tv_nsec = 0;
882 { // We have done the current work and no more has arrived. Sleep.
883 if (sleeptime.tv_sec == 0 && sleeptime.tv_nsec == 0)
885 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Sleeping until nudged.");
886 threadWaitForSignal();
890 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Sleeping for %d and %d", sleeptime.tv_sec, sleeptime.tv_nsec);
891 struct timespec targetTime;
893 clock_gettime(CLOCK_REALTIME, &targetTime);
898 GetSystemTime(&systime);
899 SystemTimeToFileTime(&systime,(FILETIME*)&filetime);
900 targetTime.tv_sec=(filetime-WINDOWS_TIME_BASE_OFFSET)/(10*1000*1000);
901 targetTime.tv_nsec=((filetime-WINDOWS_TIME_BASE_OFFSET)%(10*1000*1000))*100;
903 targetTime.tv_nsec += sleeptime.tv_nsec;
904 if (targetTime.tv_nsec > 999999999)
906 targetTime.tv_sec += 1;
907 targetTime.tv_nsec -= 1000000000;
909 targetTime.tv_sec += sleeptime.tv_sec;
910 threadWaitForSignalTimed(&targetTime);
913 threadNudged = false;
915 bool finished = false;
916 ULLONG nowPTS, pktPTS;
921 pktPTS = PESPacket::PTS_INVALID;
923 if (!worklist.empty())
924 pktPTS = worklist.front().getPTS();
926 if (pktPTS != PESPacket::PTS_INVALID)
927 { // An entry exists in the work list
928 nowPTS = Video::getInstance()->getCurrentTimestamp();
929 if (PTSDifference(nowPTS, pktPTS) < 2*90000 ||
930 PTSDifference(pktPTS, nowPTS) < 4000)
931 { // It is due for processing or discarding.
934 if (!worklist.empty())
936 PESPacket packet = worklist.front();
937 worklist.pop_front();
940 if (showing) decodePacket(packet);
945 else if (PTSDifference(pktPTS, nowPTS) >= 60*90000)
946 { // Seems like a bad or very old entry. Get rid of it.
949 if (!worklist.empty()) worklist.pop_front();
954 // Calculate how long to sleep for
955 sleeptime.tv_sec = 0;
956 sleeptime.tv_nsec = 0;
957 if (pktPTS != PESPacket::PTS_INVALID)
958 { // A future action exists
959 nowPTS = Video::getInstance()->getCurrentTimestamp();
960 ULLONG diff = PTSDifference(pktPTS, nowPTS);
961 sleeptime.tv_sec = diff / 90000;
962 sleeptime.tv_nsec = (long)(diff % 90000) * 10000L / 90000L * 100000L;
963 if (sleeptime.tv_sec > 60)
964 { // We have a problem. An action so far in the future should have
965 // been culled. Probably the action is already due and PTSDifference
966 // wrapped around. Therefore we sleep for a minimal time instead.
967 sleeptime.tv_sec = 0;
968 sleeptime.tv_nsec = 1;