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 // --- cTimeMs ---------------------------------------------------------------
36 // Borrowed from the vdr tools
38 cTimeMs::cTimeMs(int Ms)
47 uint64_t cTimeMs::Now(void)
51 if (getClockRealTime(&tp) == 0)
52 return (uint64_t(tp.tv_sec)) * 1000 + tp.tv_nsec / 1000000;
54 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "cTimeMs: clock_gettime(CLOCK_REALTIME) failed");
58 void cTimeMs::Set(int Ms)
60 isFirstCheck = true; // Timer set, the first check can be done once
64 bool cTimeMs::TimedOut(void)
66 if (isFirstCheck && (Now() >= begin))
68 isFirstCheck = false; // Timer timed out & the first check is done
75 uint64_t cTimeMs::Elapsed(void)
81 //-------- End of cTimeMs borrowed from the vdr tools --------
83 DVBSubtitleCLUT::DVBSubtitleCLUT()
89 for (int i = 0; i < 4; ++i) palette2.setColour(i, defaultPalette2[i]);
90 for (int i = 0; i < 16; ++i) palette4.setColour(i, defaultPalette4[i]);
91 for (int i = 0; i < 256; ++i) palette8.setColour(i, defaultPalette8[i]);
94 const ULONG DVBSubtitleCLUT::defaultPalette2[4] = {
95 0x00000000, 0xFFFFFFFF, 0xFF000000, 0xFF808080
98 const ULONG DVBSubtitleCLUT::defaultPalette4[16] = {
99 0x00000000, 0xFFFF0000, 0xFF00FF00, 0xFFFFFF00,
100 0xFF0000FF, 0xFFFF00FF, 0xFF00FFFF, 0xFFFFFFFF,
101 0xFF000000, 0xFF800000, 0xFF008000, 0xFF808000,
102 0xFF000080, 0xFF800080, 0xFF008080, 0xFF808080
105 const ULONG DVBSubtitleCLUT::defaultPalette8[256] = {
106 0x00000000, 0x40FF0000, 0x4000FF00, 0x40FFFF00, // 0000 0000
107 0x400000FF, 0x40FF00FF, 0x4000FFFF, 0x40FFFFFF, // 0000 0100
108 0x80000000, 0x80550000, 0x80005500, 0x80555500, // 0000 1000
109 0x80000055, 0x80550055, 0x80005555, 0x80555555, // 0000 1100
110 0xFFAA0000, 0xFFFF0000, 0xFFAA5500, 0xFFFF5500, // 0001 0000
111 0xFFAA0055, 0xFFFF0055, 0xFFAA5555, 0xFFFF5555, // 0001 0100
112 0x80AA0000, 0x80FF0000, 0x80AA5500, 0x80FF5500, // 0001 1000
113 0x80AA0055, 0x80FF0055, 0x80AA5555, 0x80FF5555, // 0001 1100
114 0xFF00AA00, 0xFF55AA00, 0xFF00FF00, 0xFF55FF00, // 0010 0000
115 0xFF00AA55, 0xFF55AA55, 0xFF00FF55, 0xFF55FF55, // 0010 0100
116 0x8000AA00, 0x8055AA00, 0x8000FF00, 0x8055FF00, // 0010 1000
117 0x8000AA55, 0x8055AA55, 0x8000FF55, 0x8055FF55, // 0010 1100
118 0xFFAAAA00, 0xFFFFAA00, 0xFFAAFF00, 0xFFFFFF00, // 0011 0000
119 0xFFAAAA55, 0xFFFFAA55, 0xFFAAFF55, 0xFFFFFF55, // 0011 0100
120 0x80AAAA00, 0x80FFAA00, 0x80AAFF00, 0x80FFFF00, // 0011 1000
121 0x80AAAA55, 0x80FFAA55, 0x80AAFF55, 0x80FFFF55, // 0011 1100
122 0xFF0000AA, 0xFF5500AA, 0xFF0055AA, 0xFF5555AA, // 0100 0000
123 0xFF0000FF, 0xFF5500FF, 0xFF0055FF, 0xFF5555FF, // 0100 0100
124 0x800000AA, 0x805500AA, 0x800055AA, 0x805555AA, // 0100 1000
125 0x800000FF, 0x805500FF, 0x800055FF, 0x805555FF, // 0100 1100
126 0xFFAA00AA, 0xFFFF00AA, 0xFFAA55AA, 0xFFFF55AA, // 0101 0000
127 0xFFAA00FF, 0xFFFF00FF, 0xFFAA55FF, 0xFFFF55FF, // 0101 0100
128 0x80AA00AA, 0x80FF00AA, 0x80AA55AA, 0x80FF55AA, // 0101 1000
129 0x80AA00FF, 0x80FF00FF, 0x80AA55FF, 0x80FF55FF, // 0101 1100
130 0xFF00AAAA, 0xFF55AAAA, 0xFF00FFAA, 0xFF55FFAA, // 0110 0000
131 0xFF00AAFF, 0xFF55AAFF, 0xFF00FFFF, 0xFF55FFFF, // 0110 0100
132 0x8000AAAA, 0x8055AAAA, 0x8000FFAA, 0x8055FFAA, // 0110 1000
133 0x8000AAFF, 0x8055AAFF, 0x8000FFFF, 0x8055FFFF, // 0110 1100
134 0xFFAAAAAA, 0xFFFFAAAA, 0xFFAAFFAA, 0xFFFFFFAA, // 0111 0000
135 0xFFAAAAFF, 0xFFFFAAFF, 0xFFAAFFFF, 0xFFFFFFFF, // 0111 0100
136 0x80AAAAAA, 0x80FFAAAA, 0x80AAFFAA, 0x80FFFFAA, // 0111 1000
137 0x80AAAAFF, 0x80FFAAFF, 0x80AAFFFF, 0x80FFFFFF, // 0111 1100
138 0xFF808080, 0xFFAA8080, 0xFF80AA80, 0xFFAAAA80, // 1000 0000
139 0xFF8080AA, 0xFFAA80AA, 0xFF80AAAA, 0xFFAAAAAA, // 1000 0100
140 0xFF000000, 0xFF2A0000, 0xFF002A00, 0xFF2A2A00, // 1000 1000
141 0xFF00002A, 0xFF2A002A, 0xFF002A2A, 0xFF2A2A2A, // 1000 1100
142 0xFFD58080, 0xFFFF8080, 0xFFD5AA80, 0xFFFFAA80, // 1001 0000
143 0xFFD580AA, 0xFFFF80AA, 0xFFD5AAAA, 0xFFFFAAAA, // 1001 0100
144 0xFF550000, 0xFF7F0000, 0xFF552A00, 0xFF7F2A00, // 1001 1000
145 0xFF55002A, 0xFF7F002A, 0xFF552A2A, 0xFF7F2A2A, // 1001 1100
146 0xFF80D580, 0xFFAAD580, 0xFF80FF80, 0xFFAAFF80, // 1010 0000
147 0xFF80D5AA, 0xFFAAD5AA, 0xFF80FFAA, 0xFFAAFFAA, // 1010 0100
148 0xFF005500, 0xFF2A5500, 0xFF007F00, 0xFF2A7F00, // 1010 1000
149 0xFF00552A, 0xFF2A552A, 0xFF007F2A, 0xFF2A7F2A, // 1010 1100
150 0xFFD5D580, 0xFFFFD580, 0xFFD5FF80, 0xFFFFFF80, // 1011 0000
151 0xFFD5D5AA, 0xFFFFD5AA, 0xFFD5FFAA, 0xFFFFFFAA, // 1011 0100
152 0xFF555500, 0xFF7F5500, 0xFF557F00, 0xFF7F7F00, // 1011 1000
153 0xFF55552A, 0xFF7F552A, 0xFF557F2A, 0xFF7F7F2A, // 1011 1100
154 0xFF8080D5, 0xFFAA80D5, 0xFF80AAD5, 0xFFAAAAD5, // 1100 0000
155 0xFF8080FF, 0xFFAA80FF, 0xFF80AAFF, 0xFFAAAAFF, // 1100 0100
156 0xFF000055, 0xFF2A0055, 0xFF002A55, 0xFF2A2A55, // 1100 1000
157 0xFF00007F, 0xFF2A007F, 0xFF002A7F, 0xFF2A2A7F, // 1100 1100
158 0xFFD580D5, 0xFFFF80D5, 0xFFD5AAD5, 0xFFFFAAD5, // 1101 0000
159 0xFFD580FF, 0xFFFF80FF, 0xFFD5AAFF, 0xFFFFAAFF, // 1101 0100
160 0xFF550055, 0xFF7F0055, 0xFF552A55, 0xFF7F2A55, // 1101 1000
161 0xFF55007F, 0xFF7F007F, 0xFF552A7F, 0xFF7F2A7F, // 1101 1100
162 0xFF80D5D5, 0xFFAAD5D5, 0xFF80FFD5, 0xFFAAFFD5, // 1110 0000
163 0xFF80D5FF, 0xFFAAD5FF, 0xFF80FFFF, 0xFFAAFFFF, // 1110 0100
164 0xFF005555, 0xFF2A5555, 0xFF007F55, 0xFF2A7F55, // 1110 1000
165 0xFF00557F, 0xFF2A557F, 0xFF007F7F, 0xFF2A7F7F, // 1110 1100
166 0xFFD5D5D5, 0xFFFFD5D5, 0xFFD5FFD5, 0xFFFFFFD5, // 1111 0000
167 0xFFD5D5FF, 0xFFFFD5FF, 0xFFD5FFFF, 0xFFFFFFFF, // 1111 0100
168 0xFF555555, 0xFF7F5555, 0xFF557F55, 0xFF7F7F55, // 1111 1000
169 0xFF55557F, 0xFF7F557F, 0xFF557F7F, 0xFF7F7F7F, // 1111 1100
172 void DVBSubtitleCLUT::setEntry(int bpp, UINT index, UCHAR Y, UCHAR Cr, UCHAR Cb, UCHAR T)
176 if (Y2 == 0) { Y2 = 16; A = 0; } else A = 255 - T;
179 case 2: palette2.setYCrCbA(index, Y2, Cr, Cb, A); break;
180 case 4: palette4.setYCrCbA(index, Y2, Cr, Cb, A); break;
181 case 8: palette8.setYCrCbA(index, Y2, Cr, Cb, A); break;
185 const Palette& DVBSubtitleCLUT::getPalette(int bpp) const
189 case 2: return palette2; break;
190 case 4: return palette4; break;
191 default: return palette8; break;
195 DVBSubtitleRegion::DVBSubtitleRegion()
201 void DVBSubtitleRegion::setDepth(UINT d)
203 if (d < 4) palette.setBpp(1 << d);
206 DVBSubtitlePage::DVBSubtitlePage()
212 serviceAcquired(false)
215 void DVBSubtitlePage::setState(UCHAR s)
218 if (state == 1) // Acquisition point - page refresh
219 if (!serviceAcquired) // Service not acquired lets treat this as mode change
221 if (state == 2) // Mode change - new epoch
223 serviceAcquired = true;
226 currentDisplay.clear();
227 pendingDisplay.clear();
232 void DVBSubtitlePage::updateRegionPalettes(const DVBSubtitleCLUT& clut)
234 RegionMap::iterator region;
235 for (region = regions.begin(); region != regions.end(); ++region)
236 if (region->second.CLUTid == clut.CLUTid)
237 region->second.palette = clut.getPalette(region->second.palette.getBpp());
240 DVBSubtitleDisplayDefinition::DVBSubtitleDisplayDefinition()
246 class DVBSubtitleObject
250 UCHAR nonModColourFlag;
253 DVBSubtitleRegion* region;
254 UINT horizontalPosition;
255 UINT verticalPosition;
257 typedef std::vector<struct RegionRef> UseList;
262 void initMapTables();
263 UCHAR* currentMapTable;
265 void drawLine(const RegionRef& use, UINT x, UINT y, UCHAR colour, UINT len);
266 UCHAR get2Bits(const UCHAR* data, UINT& index);
267 UCHAR get4Bits(const UCHAR* data, UINT& index);
268 bool decode2BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y);
269 bool decode4BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y);
270 bool decode8BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y);
272 DVBSubtitleObject(UINT id = 0);
273 void setNonModColourFlag(UCHAR flag) { nonModColourFlag = flag; }
274 void findWhereUsed(DVBSubtitlePage&);
275 void decodeSubBlock(const UCHAR* data, UINT length, bool even);
278 DVBSubtitleObject::DVBSubtitleObject(UINT id)
281 currentMapTable(NULL),
287 void DVBSubtitleObject::initMapTables()
289 map2to4[0] = 0x0; map2to4[1] = 0x7; map2to4[2] = 0x8; map2to4[3] = 0xF;
290 map2to8[0] = 0x00; map2to8[1] = 0x77; map2to8[2] = 0x88; map2to8[3] = 0xFF;
291 map4to8[0] = 0x00; map4to8[1] = 0x11; map4to8[2] = 0x22; map4to8[3] = 0x33;
292 map4to8[4] = 0x44; map4to8[5] = 0x55; map4to8[6] = 0x66; map4to8[7] = 0x77;
293 map4to8[8] = 0x88; map4to8[9] = 0x99; map4to8[10]= 0xAA; map4to8[11]= 0xBB;
294 map4to8[12]= 0xCC; map4to8[13]= 0xDD; map4to8[14]= 0xEE; map4to8[15]= 0xFF;
297 void DVBSubtitleObject::findWhereUsed(DVBSubtitlePage& page)
300 DVBSubtitlePage::RegionMap::iterator i;
301 for (i = page.regions.begin(); i != page.regions.end(); ++i)
303 DVBSubtitleRegion::ObjectList::iterator j;
304 for (j = i->second.objects.begin(); j != i->second.objects.end(); ++j)
306 if (j->objectID == objectID)
308 struct RegionRef usage;
309 usage.region = &(i->second);
310 usage.horizontalPosition = j->horizontalPosition;
311 usage.verticalPosition = j->verticalPosition;
312 useList.push_back(usage);
318 void DVBSubtitleObject::drawLine(const RegionRef& use, UINT x, UINT y,
319 UCHAR colour, UINT len)
321 if (nonModColourFlag && colour == 1) return;
322 x += use.horizontalPosition;
323 y += use.verticalPosition;
324 for (UINT pos = x; pos < x + len; ++pos)
325 use.region->setIndex(pos, y, colour);
328 UCHAR DVBSubtitleObject::get2Bits(const UCHAR* data, UINT& index)
330 UCHAR result = data[index];
337 return (result >> bitPos) & 0x03;
340 UCHAR DVBSubtitleObject::get4Bits(const UCHAR* data, UINT& index)
342 UCHAR result = data[index];
353 return result & 0x0F;
356 bool DVBSubtitleObject::decode2BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y)
358 UINT rl = 0, colour = 0;
359 UCHAR code = get2Bits(data, index);
367 code = get2Bits(data, index);
368 if (code & 2) // Switch 1
370 rl = ((code & 1) << 2) + get2Bits(data, index) + 3;
371 colour = get2Bits(data, index);
373 else if (code & 1) rl = 1; // Colour 0
376 code = get2Bits(data, index);
380 return false; // end of 2-bit/pixel_code_string
385 rl = (get2Bits(data, index) << 2) + get2Bits(data, index) + 12;
386 colour = get2Bits(data, index);
389 rl = (get2Bits(data, index) << 6) + (get2Bits(data, index) << 4) +
390 (get2Bits(data, index) << 2) + get2Bits(data, index) + 29;
391 colour = get2Bits(data, index);
396 drawLine(use, x, y, colour, rl);
401 bool DVBSubtitleObject::decode4BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y)
403 UINT rl = 0, colour = 0;
404 UCHAR code = get4Bits(data, index);
412 code = get4Bits(data, index);
413 if (code & 8) // Switch 1
415 if (code & 4) // Switch 2
417 switch (code & 3) // Switch 3
426 rl = get4Bits(data, index) + 9;
427 colour = get4Bits(data, index);
430 rl = (get4Bits(data, index) << 4) + get4Bits(data, index) + 25;
431 colour = get4Bits(data, index);
438 colour = get4Bits(data, index);
443 if (!code) return false; // end of 4-bit/pixel_code_string
444 rl = code + 2; // Colour 0
447 drawLine(use, x, y, colour, rl);
452 bool DVBSubtitleObject::decode8BppCodeString(const UCHAR* data, UINT& index, const struct RegionRef& use, UINT& x, UINT y)
454 UINT rl = 0, colour = 0;
455 UCHAR code = data[index++];
463 code = data[index++];
466 colour = data[index++];
468 return false; // else colour 0
470 drawLine(use, x, y, colour, rl);
475 void DVBSubtitleObject::decodeSubBlock(const UCHAR* data, UINT length, bool even)
477 UseList::const_iterator use;
478 for (use = useList.begin(); use != useList.end(); ++use)
480 UINT x = 0; UINT y = even ? 0 : 1; UINT index = 0;
481 while (index < length)
483 switch (data[index++])
486 switch (use->region->palette.getBpp())
488 case 8: currentMapTable = map2to8; break;
489 case 4: currentMapTable = map2to4; break;
490 default: currentMapTable = NULL;
493 while (decode2BppCodeString(data, index, *use,x,y) && index < length);
494 if (!bitPos) index++;
497 if (use->region->palette.getBpp() == 8)
498 currentMapTable = map4to8;
500 currentMapTable = NULL;
502 while (decode4BppCodeString(data, index, *use,x,y) && index < length);
503 if (!bitPos) index++;
506 while (decode8BppCodeString(data, index, *use,x,y) && index < length);
509 map2to4[0] = data[index] >> 4;
510 map2to4[1] = data[index++] & 0x0F;
511 map2to4[2] = data[index] >> 4;
512 map2to4[3] = data[index++] & 0x0F;
515 for (int i = 0; i < 4; i++) map2to8[i] = data[index++];
518 for (int i = 0; i < 16; i++) map4to8[i] = data[index++];
528 static ULLONG PTSDifference(ULLONG pts1, ULLONG pts2)
530 // Assume pts1, pts2 < 2^33; calculate pts1 - pts2
534 return (1LL<<33) + pts1 - pts2;
537 DVBSubtitles::DVBSubtitles(OSDReceiver* tosd)
539 pageOnDisplay(65536),
547 pthread_mutex_init(&input_mutex, NULL);
548 pthread_mutex_init(&output_mutex, NULL);
550 input_mutex=CreateMutex(NULL,FALSE,NULL);
551 output_mutex=CreateMutex(NULL,FALSE,NULL);
555 void DVBSubtitles::put(const PESPacket& packet)
560 if (packet.getPTS() != PESPacket::PTS_INVALID)
562 worklist.push_back(packet);
569 bool DVBSubtitles::decodePacket(const PESPacket& packet)
571 const UCHAR* data = packet.getData();
572 UINT packetSize = packet.getSize();
573 if (packetSize < 9) return false;
574 UINT segmentOffset = data[8] + 11;
575 while (packetSize > segmentOffset)
577 if (data[segmentOffset] == 0xFF) return true; // 'End of PES' marker
578 if (data[segmentOffset] != 0x0F) return false; // Out of sync
579 if (packetSize <= segmentOffset + 5) return false; // Packet truncated
580 UCHAR segmentType = data[segmentOffset + 1];
581 UINT pageID = (data[segmentOffset + 2] << 8)
582 + data[segmentOffset + 3];
583 UINT segmentLength = (data[segmentOffset + 4] << 8)
584 + data[segmentOffset + 5];
585 if (pageOnDisplay == 65536) pageOnDisplay = pageID;
586 if (pageOnDisplay != pageID) return false;
587 if (packetSize <= segmentOffset + 5 + segmentLength) return false;
588 const UCHAR* segmentData = &data[segmentOffset + 6];
589 pages[pageID]; // Create this page if it doesn't exist
590 PageMap::iterator pageEntry = pages.find(pageID);
591 if (pageEntry == pages.end()) return false;
592 DVBSubtitlePage& page = pageEntry->second;
593 if (packet.getPTS() != PESPacket::PTS_INVALID) page.pts = packet.getPTS();
596 case 0x10: // Page composition
598 if (segmentLength < 2) break;
599 page.setState((segmentData[1] & 0x0C) >> 2);
600 if (!page.serviceAcquired) break;
601 UCHAR pageVersion = (segmentData[1] & 0xF0) >> 4;
602 if (pageVersion == page.version) break; // No update
603 page.version = pageVersion;
604 page.timeout = segmentData[0];
605 page.pendingDisplay.clear();
607 while (segmentLength > parsePos + 5)
609 UCHAR regionID = segmentData[parsePos];
610 page.regions[regionID]; // Create the region if it doesn't exist
611 DVBSubtitlePage::Coords coords;
612 coords.x = (segmentData[parsePos + 2] << 8) +
613 segmentData[parsePos + 3];
614 coords.y = (segmentData[parsePos + 4] << 8) +
615 segmentData[parsePos + 5];
616 page.pendingDisplay[regionID] = coords;
621 case 0x11: // Region composition
623 if (segmentLength < 10) break;
624 UCHAR regionID = segmentData[0];
625 page.regions[regionID]; // Create the region if it doesn't exist
626 DVBSubtitlePage::RegionMap::iterator regionEntry;
627 regionEntry = page.regions.find(regionID);
628 if (regionEntry == page.regions.end()) return false;
629 DVBSubtitleRegion& region = regionEntry->second;
630 UCHAR regionVersion = (segmentData[1] & 0xF0) >> 4;
631 if (regionVersion == region.version) break; // No update
632 region.version = regionVersion;
633 bool regionFillFlag = (segmentData[1] & 0x08) >> 3;
634 UINT regionWidth = (segmentData[2] << 8) + segmentData[3];
635 UINT regionHeight = (segmentData[4] << 8) + segmentData[5];
636 region.setSize(regionWidth, regionHeight);
637 region.level = (segmentData[6] & 0xE0) >> 5;
638 region.setDepth((segmentData[6] & 0x1C) >> 2);
639 region.CLUTid = segmentData[7];
640 page.CLUTs[region.CLUTid]; // Create the CLUT if it doesn't exist
641 DVBSubtitlePage::CLUTMap::iterator clut;
642 clut = page.CLUTs.find(region.CLUTid);
643 if (clut == page.CLUTs.end()) return false;
644 region.palette = clut->second.getPalette(region.palette.getBpp());
645 if (regionFillFlag) switch (region.palette.getBpp())
647 case 2: region.setAllIndices((segmentData[9] & 0x0C) >> 2); break;
648 case 4: region.setAllIndices((segmentData[9] & 0xF0) >> 4); break;
649 case 8: region.setAllIndices(segmentData[8]); break;
651 region.objects.clear();
653 while (segmentLength > parsePos + 5)
655 UINT objectID = (segmentData[parsePos] << 8) +
656 segmentData[parsePos + 1];
657 DVBSubtitleRegion::ObjectRef objref;
658 objref.objectID = objectID;
659 UINT objectType = (segmentData[parsePos + 2] & 0xC0) >> 6;
660 objref.horizontalPosition = ((segmentData[parsePos + 2] & 0x0F) << 8) +
661 segmentData[parsePos + 3];
662 objref.verticalPosition = ((segmentData[parsePos + 4] & 0x0F) << 8) +
663 segmentData[parsePos + 5];
664 if (objectType == 0) region.objects.push_back(objref);
669 case 0x12: // CLUT definition
671 if (segmentLength < 2) break;
672 UCHAR CLUTid = segmentData[0];
673 DVBSubtitlePage::CLUTMap::iterator clutEntry;
674 clutEntry = page.CLUTs.find(CLUTid);
675 if (clutEntry == page.CLUTs.end()) return false;
676 DVBSubtitleCLUT& clut = clutEntry->second;
677 clut.CLUTid = CLUTid;
678 UCHAR clutVersion = (segmentData[1] & 0xF0) >> 4;
679 if (clutVersion == clut.version) break; // No update
680 clut.version = clutVersion;
682 while (segmentLength > parsePos + 3)
684 UCHAR clutEntryID = segmentData[parsePos];
685 bool fullRangeFlag = segmentData[parsePos + 1] & 0x01;
689 if (segmentLength <= parsePos + 5) break;
690 Y = segmentData[parsePos + 2];
691 Cr = segmentData[parsePos + 3];
692 Cb = segmentData[parsePos + 4];
693 T = segmentData[parsePos + 5];
697 Y = segmentData[parsePos + 2] & 0xFC;
698 Cr = (segmentData[parsePos + 2] & 0x03) << 6;
699 Cr |= (segmentData[parsePos + 3] & 0xC0) >> 2;
700 Cb = (segmentData[parsePos + 3] & 0x3C) << 2;
701 T = (segmentData[parsePos + 3] & 0x03) << 6;
703 UCHAR entryFlags = segmentData[parsePos + 1];
704 if (entryFlags & 0x80) clut.setEntry(2, clutEntryID, Y,Cr,Cb,T);
705 if (entryFlags & 0x40) clut.setEntry(4, clutEntryID, Y,Cr,Cb,T);
706 if (entryFlags & 0x20) clut.setEntry(8, clutEntryID, Y,Cr,Cb,T);
707 parsePos += fullRangeFlag ? 6 : 4;
709 page.updateRegionPalettes(clut);
712 case 0x13: // Object data
714 if (segmentLength < 3) break;
715 UINT objectID = (segmentData[0] << 8) + segmentData[1];
716 DVBSubtitleObject object(objectID);
717 object.findWhereUsed(page);
718 UCHAR codingMethod = (segmentData[2] & 0x0C) >> 2;
719 object.setNonModColourFlag(segmentData[2] & 0x01);
720 if (codingMethod == 0x00) // Coding of pixels
722 if (segmentLength < 7) break;
723 UINT topFieldLen = (segmentData[3] << 8) + segmentData[4];
724 UINT bottomFieldLen = (segmentData[5] << 8) + segmentData[6];
725 if (segmentLength < 7 + topFieldLen + bottomFieldLen) break;
726 object.decodeSubBlock(segmentData + 7, topFieldLen, true);
728 object.decodeSubBlock(segmentData + 7 + topFieldLen,
729 bottomFieldLen, false);
731 object.decodeSubBlock(segmentData + 7, topFieldLen, false);
733 else if (codingMethod == 0x01) // Coded as a string of characters
737 case 0x14: {// Display definition
738 if (segmentLength<5) break;
739 UINT ddsversion=(segmentData[0]&0xf0)>>4;
740 if (ddsversion==dds.version) break; // no update ncessary
741 dds.version=ddsversion;
742 dds.displaywindow=!(!(segmentData[0]&0x08));
743 dds.framewidth=(segmentData[1] << 8) + segmentData[2];
744 dds.frameheight=(segmentData[3] << 8) + segmentData[4];
745 if (segmentLength<13) break;
746 if (dds.displaywindow) {
747 dds.windowx=(segmentData[4] << 8) + segmentData[5];
748 dds.windoww=(segmentData[6] << 8) + segmentData[7]-dds.windowx;
749 dds.windowy=(segmentData[8] << 8) + segmentData[9];
750 dds.windowh=(segmentData[10] << 8) + segmentData[11]-dds.windowy;
754 dds.windoww=dds.framewidth;
755 dds.windowh=dds.frameheight;
759 case 0x80: // End of display set
762 page.currentDisplay = page.pendingDisplay;
765 segmentOffset += (segmentLength + 6);
767 return false; // Fall through from while loop: we ran out of data
770 void DVBSubtitles::finishPage(const DVBSubtitlePage& page)
772 if (page.dirty && !osdMenuShowing)
777 DVBSubtitlePage::DisplayMap::const_iterator i,j;
778 for (i = page.currentDisplay.begin(); i != page.currentDisplay.end(); ++i)
779 { // For each currently displayed region, if the region has been
780 // moved or removed, blank out its previous screen position
781 j = page.pendingDisplay.find(i->first);
782 if (j == page.pendingDisplay.end() ||
783 j->second.x != i->second.x ||
784 j->second.y != i->second.y)
786 DVBSubtitlePage::RegionMap::const_iterator region_iter;
787 region_iter = page.regions.find(i->first);
788 if (region_iter == page.regions.end()) continue;
789 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Clear region %d", i->first);
790 if (!osdMenuShowing) osd->clearOSDArea(i->second.x, i->second.y,
791 region_iter->second.getWidth(), region_iter->second.getHeight(),dds);
795 for (i = page.pendingDisplay.begin(); i != page.pendingDisplay.end(); ++i)
796 { // Display each pending region
797 DVBSubtitlePage::RegionMap::const_iterator region_iter;
798 region_iter = page.regions.find(i->first);
799 if (region_iter == page.regions.end()) continue;
800 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Display region %d", i->first);
801 if (!osdMenuShowing) osd->drawOSDBitmap(i->second.x, i->second.y,
802 region_iter->second,dds);
804 // after displaying regions set the page timeout timer
805 SubtitleTimeout.Set(page.timeout * 1000);
807 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "SubtitleTimeout %d", page.timeout);
810 void DVBSubtitles::lockInput()
813 pthread_mutex_lock(&input_mutex);
815 WaitForSingleObject(input_mutex, INFINITE);
819 void DVBSubtitles::unlockInput()
822 pthread_mutex_unlock(&input_mutex);
824 ReleaseMutex(input_mutex);
828 void DVBSubtitles::lockOutput()
831 pthread_mutex_lock(&output_mutex);
833 WaitForSingleObject(output_mutex, INFINITE);
837 void DVBSubtitles::unlockOutput()
840 pthread_mutex_unlock(&output_mutex);
842 ReleaseMutex(output_mutex);
846 int DVBSubtitles::start()
849 dds=DVBSubtitleDisplayDefinition();
852 return threadStart();
855 void DVBSubtitles::stop()
863 PageMap::const_iterator pageEntry = pages.find(pageOnDisplay);
864 if (pageEntry != pages.end())
866 const DVBSubtitlePage& page = pageEntry->second;
867 DVBSubtitlePage::DisplayMap::const_iterator i;
868 for (i = page.currentDisplay.begin(); i != page.currentDisplay.end(); ++i)
870 DVBSubtitlePage::RegionMap::const_iterator region_iter;
871 region_iter = page.regions.find(i->first);
872 if (region_iter == page.regions.end()) continue;
873 if (!osdMenuShowing) osd->clearOSDArea(i->second.x, i->second.y,
874 region_iter->second.getWidth(), region_iter->second.getHeight(),dds);
878 pageOnDisplay = 65536;
880 threadNudged = false;
883 void DVBSubtitles::show()
890 void DVBSubtitles::hide()
894 PageMap::const_iterator pageEntry = pages.find(pageOnDisplay);
895 if (pageEntry != pages.end())
897 const DVBSubtitlePage& page = pageEntry->second;
898 DVBSubtitlePage::DisplayMap::const_iterator i;
899 for (i = page.currentDisplay.begin(); i != page.currentDisplay.end(); ++i)
901 DVBSubtitlePage::RegionMap::const_iterator region_iter;
902 region_iter = page.regions.find(i->first);
903 if (region_iter == page.regions.end()) continue;
904 if (!osdMenuShowing) osd->clearOSDArea(i->second.x, i->second.y,
905 region_iter->second.getWidth(), region_iter->second.getHeight(),dds);
909 pageOnDisplay = 65536;
913 void DVBSubtitles::nudge()
916 pthread_mutex_lock(&threadCondMutex);
918 pthread_cond_signal(&threadCond);
919 pthread_mutex_unlock(&threadCondMutex);
921 WaitForSingleObject(threadCondMutex, INFINITE);
923 SetEvent(threadCond);
924 ReleaseMutex(threadCondMutex);
928 #define SUBTITLE_TIMEOUT_MS 750
929 // How often do we check if subtitles have been timed out.
931 void DVBSubtitles::threadMethod()
933 struct timespec sleeptime;
934 sleeptime.tv_sec = 0;
935 sleeptime.tv_nsec = 0;
940 if (SubtitleTimeout.TimedOut()) // do we have a subtitle timeout
943 if (showing && !osdMenuShowing) {
944 if (!timeout_clear) {
945 osd->clearOSD(); // if we have the timeout, lets clear the OSD
951 else if (showing) // if not lets check when will we have it
953 wakeup = -(SubtitleTimeout.Elapsed());
954 if (wakeup > 0 && sleeptime.tv_nsec == 0 && sleeptime.tv_sec == 0)
955 // We are not done, we still have a Subtitle Timeout!
957 sleeptime.tv_sec = (int)(wakeup / 1000);
958 sleeptime.tv_nsec = (long)(wakeup % 1000) * 10000L / 1000L * 100000L;
965 { // We have done the current work and no more has arrived. Sleep.
966 if (sleeptime.tv_sec == 0 && sleeptime.tv_nsec == 0)
968 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Sleeping until nudged.");
969 threadWaitForSignal();
973 Log::getInstance()->log("SUBTITLES", Log::DEBUG, "Sleeping for %d and %d", sleeptime.tv_sec, sleeptime.tv_nsec);
974 struct timespec targetTime;
976 getClockRealTime(&targetTime);
978 targetTime.tv_nsec += sleeptime.tv_nsec;
979 if (targetTime.tv_nsec > 999999999)
981 targetTime.tv_sec += 1;
982 targetTime.tv_nsec -= 1000000000;
984 targetTime.tv_sec += sleeptime.tv_sec;
985 threadWaitForSignalTimed(&targetTime);
988 threadNudged = false;
990 bool finished = false;
991 ULLONG nowPTS, pktPTS;
997 pktPTS = PESPacket::PTS_INVALID;
999 if (!worklist.empty())
1000 pktPTS = worklist.front().getPTS();
1002 if (pktPTS != PESPacket::PTS_INVALID)
1003 { // An entry exists in the work list
1004 nowPTS = Video::getInstance()->getCurrentTimestamp();
1005 if (PTSDifference(nowPTS, pktPTS) < 2*90000 ||
1006 PTSDifference(pktPTS, nowPTS) < 4000)
1007 { // It is due for processing or discarding.
1010 if (!worklist.empty())
1012 PESPacket packet = worklist.front();
1013 worklist.pop_front();
1016 if (showing) decodePacket(packet);
1021 else if (PTSDifference(pktPTS, nowPTS) >= 60*90000)
1022 { // Seems like a bad or very old entry. Get rid of it.
1025 if (!worklist.empty()) worklist.pop_front();
1030 // Calculate how long to sleep for
1031 wait = SUBTITLE_TIMEOUT_MS; // Max sleep while checking subtitle timeout
1032 sleeptime.tv_sec = 0;
1033 sleeptime.tv_nsec = 0;
1034 if (pktPTS != PESPacket::PTS_INVALID)
1035 { // A future action exists
1036 nowPTS = Video::getInstance()->getCurrentTimestamp();
1037 ULLONG diff = PTSDifference(pktPTS, nowPTS);
1038 diff /= 90; // convert diff in ms as PTS difference in 1/90000s
1039 if (diff < 60 * 1000)
1041 if (diff < (ULLONG)wait)
1043 sleeptime.tv_nsec = (long)(wait % 1000) * 10000L / 1000L * 100000L;
1046 { // We have a problem. An action so far in the future should have
1047 // been culled. Probably the action is already due and PTSDifference
1048 // wrapped around. Therefore we sleep for a minimal time instead.
1049 sleeptime.tv_nsec = 1;
1055 void DVBSubtitles::setOSDMenuVisibility(bool visible)
1058 osdMenuShowing = visible;