X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/6e95f24aaf7e2629f193269397ec187ddda8ea3d..b7a2b4e737acaccfa6d52688b19bc252de99d00e:/lib/dvb/teletext.cpp diff --git a/lib/dvb/teletext.cpp b/lib/dvb/teletext.cpp index 54b514e6..475a322f 100644 --- a/lib/dvb/teletext.cpp +++ b/lib/dvb/teletext.cpp @@ -3,14 +3,65 @@ #include #include -/* - This is a very simple en300 706 telext decoder. - - It can only decode a single page at a time, thus it's only used - for subtitles. - - */ +// G0 and G2 national option table +// see table 33 in ETSI EN 300 706 +// use it with (triplet 1 bits 14-11)*(ctrl bits C12-14) +unsigned char NationalOptionSubsetsLookup[16*8] = +{ + 1, 4, 11, 5, 3, 8, 0, 9, + 7, 4, 11, 5, 3, 1, 0, 1, + 1, 4, 11, 5, 3, 8, 12, 1, + 1, 1, 1, 1, 1, 10, 1, 9, + 1, 4, 2, 6, 1, 1, 0, 1, + 1, 1, 1, 1, 1, 1, 1, 1, // reserved + 1, 1, 1, 1, 1, 1, 12, 1, + 1, 1, 1, 1, 1, 1, 1, 1, // reserved + 1, 1, 1, 1, 3, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, // reserved + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, // reserved + 1, 1, 1, 1, 1, 1, 1, 1, // reserved + 1, 1, 1, 1, 1, 1, 1, 1, // reserved + 1, 1, 1, 1, 1, 1, 1, 1, // reserved + 1, 1, 1, 1, 1, 1, 1, 1 // reserved +}; + +unsigned char NationalReplaceMap[128] = +{ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 6, 7, 8, + 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 11, 12, 13, 0 +}; + +// national option subsets (UTF8) +// see table 36 in ETSI EN 300 706 + +unsigned int NationalOptionSubsets[13*14] = { + 0, 0x0023, 0xc5af, 0xc48d, 0xc5a3, 0xc5be, 0xc3bd, 0xc3ad, 0xc599, 0xc3a9, 0xc3a1, 0xc49b, 0xc3ba, 0xc5a1, // Slovak/Czech + 0, 0xc2a3, 0x0024, 0x0040, 0xe28690, 0xc2bd, 0xe28692, 0xe28691, 0x0023, 0x002d, 0xc2bc, 0xc781, 0xc2be, 0xc3b7, // English + 0, 0x0023, 0xc3b5, 0xc5A0, 0xc384, 0xc396, 0xc5bd, 0xc39c, 0xc395, 0xc5a1, 0xc3a4, 0xc3b6, 0xc5be, 0xc3bc, // Estonian + 0, 0xc3a9, 0xc3af, 0xc3a0, 0xc3ab, 0xc3aa, 0xc3b9, 0xc3ae, 0x0023, 0xc3a8, 0xc3a2, 0xc3b4, 0xc3bb, 0xc3a7, // French + 0, 0x0023, 0x0024, 0xc2a7, 0xc384, 0xc396, 0xc39c, 0x005e, 0x005f, 0xcb9a, 0xc3a4, 0xc3b6, 0xc3bc, 0xc39f, // German + 0, 0xc2a3, 0x0024, 0xc3a9, 0xcb9a, 0xc3a7, 0xe28692, 0xe28691, 0x0023, 0xc3b9, 0xc3a0, 0xc3b2, 0xc3a8, 0xc3ac, // Italian + 0, 0x0023, 0x0024, 0xc5a0, 0xc497, 0xc8a9, 0xc5bd, 0xc48d, 0xc5ab, 0xc5a1, 0xc485, 0xc5b3, 0xc5be, 0xc4af/*FIXMEE*/, // Lithuanian/Lettish + 0, 0x0023, 0xc584, 0xc485, 0xc6b5, 0xc59a, 0xc581, 0xc487, 0xc3b3, 0xc499, 0xc5bc, 0xc59b, 0xc582, 0xc5ba, // Polish + 0, 0xc3a7, 0x0024, 0xc2a1, 0xc3a1, 0xc3a9, 0xc3ad, 0xc3b3, 0xc3ba, 0xc2bf, 0xc3bc, 0xc3b1, 0xc3a8, 0xc3a0, // Spanish/Portuguese + 0, 0x0023, 0xc2a4, 0xc5a2, 0xc382, 0xc59e, 0xc78d, 0xc38e, 0xc4b1, 0xc5a3, 0xc3a2, 0xc59f, 0xc78e, 0xc3ae, // Rumanian + 0, 0x0023, 0xc38b, 0xc48c, 0xc486, 0xc5bd, 0xc490, 0xc5a0, 0xc3ab, 0xc48d, 0xc487, 0xc5be, 0xc491, 0xc5a1, // Slovenian/Serbian/Croation + 0, 0x0023, 0xc2a4, 0xc389, 0xc384, 0xc396, 0xc385, 0xc39c, 0x005f, 0xc3a9, 0xc3a4, 0xc3b6, 0xc3a5, 0xc3bc, // Finnish/Hungarian/Swedish + 0, 0xee8080/*FIXME*/, 0xc7a7, 0xc4b0, 0xc59e, 0xc396, 0xc387, 0xc39c, 0xc7a6, 0xc4b1, 0xc59f, 0xc3b6, 0xc3a7, 0xc3bc // Turkish +}; + +// This is a very simple en300 706 telext decoder. +// It can only decode a single page at a time, thus it's only used +// for subtitles. + DEFINE_REF(eDVBTeletextParser); /* we asumme error free transmission! */ @@ -70,10 +121,10 @@ eDVBTeletextParser::eDVBTeletextParser(iDVBDemux *demux) { setStreamID(0xBD); /* as per en 300 472 */ - setPage(-1); + setPageAndMagazine(0,0); if (demux->createPESReader(eApp, m_pes_reader)) - eDebug("failed to create PES reader!"); + eDebug("failed to create teletext subtitle PES reader!"); else m_pes_reader->connectRead(slot(*this, &eDVBTeletextParser::processData), m_read_connection); } @@ -102,7 +153,7 @@ void eDVBTeletextParser::processPESPacket(__u8 *pkt, int len) while (len > 2) { - unsigned char data_unit_id = *p++; + /*unsigned char data_unit_id = */*p++; unsigned char data_unit_length = *p++; len -= 2; @@ -114,11 +165,17 @@ void eDVBTeletextParser::processPESPacket(__u8 *pkt, int len) if (data_unit_length != 44) { - eDebug("illegal data unit length %d", data_unit_length); + /* eDebug("illegal data unit length %d", data_unit_length); */ break; } - unsigned char line_offset = *p++; len--; +// if (data_unit_id != 0x03) +// { +// /* eDebug("non subtitle data unit id %d", data_unit_id); */ +// break; +// } + + /*unsigned char line_offset =*/ *p++; len--; unsigned char framing_code = *p++; len--; int magazine_and_packet_address = decode_hamming_84(p++); len--; @@ -128,59 +185,66 @@ void eDVBTeletextParser::processPESPacket(__u8 *pkt, int len) if (framing_code != 0xe4) /* no teletxt data */ continue; - - m_M = magazine_and_packet_address & 7; - m_Y = magazine_and_packet_address >> 3; + int M = magazine_and_packet_address & 7, + Y = magazine_and_packet_address >> 3; // eDebug("line %d, framing code: %02x, M=%02x, Y=%02x", line_offset, framing_code, m_M, m_Y); - if (m_Y == 0) /* page header */ + if (Y == 0) /* page header */ { - m_C = 0; - - m_S1 = decode_hamming_84(data + 2); /* S1 */ - int S2C4 = decode_hamming_84(data + 3); - - m_S2 = S2C4 & 7; - m_C |= (S2C4 & 8) ? (1<<4) : 0; - - m_S3 = decode_hamming_84(data + 4); - - int S4C5C6 = decode_hamming_84(data + 5); - - m_S4 = S4C5C6 & 3; - m_C |= (S4C5C6 & 0xC) << 3; - - m_C |= decode_hamming_84(data + 6) << 7; - m_C |= decode_hamming_84(data + 7) << 11; - - int serial_mode = m_C & (1<<11); - + int X = decode_hamming_84(data + 1) * 0x10 + decode_hamming_84(data), +// S1 = decode_hamming_84(data + 2), + S2C4 = decode_hamming_84(data + 3), +// S2 = S2C4 & 7, +// S3 = decode_hamming_84(data + 4), + S4C5C6 = decode_hamming_84(data + 5), +// S4 = S4C5C6 & 3, + C = ((S2C4 & 8) ? (1<<4) : 0) | + ((S4C5C6 & 0xC) << 3) | + (decode_hamming_84(data + 6) << 7) | + (decode_hamming_84(data + 7) << 11), + serial_mode = C & (1<<11); + /* page on the same magazine? end current page. */ - if ((serial_mode || (m_M == m_page_M)) && (m_page_open)) + if ((serial_mode || M == m_page_M) && m_page_open) { handlePageEnd(have_pts, pts); m_page_open = 0; } - - m_X = decode_hamming_84(data+1) * 0x10 + decode_hamming_84(data); - - if ((m_C & (1<<6)) && (m_X != 0xFF)) /* scan for pages with subtitle bit set */ - m_found_subtitle_pages.insert((m_M << 8) | m_X); - + + if ((C & (1<<6)) && (X != 0xFF)) /* scan for pages with subtitle bit set */ + { + eDVBServicePMTHandler::subtitleStream s; + s.pid = m_pid; + s.subtitling_type = 0x01; // ebu teletext subtitle + s.teletext_page_number = X & 0xFF; + s.teletext_magazine_number = M & 7; + m_found_subtitle_pages.insert(s); + } + /* correct page on correct magazine? open page. */ - if ((m_M == m_page_M) && (m_X == m_page_X)) + if (M == m_page_M && X == m_page_X) { handlePageStart(); + m_subtitle_page.m_C = C; + m_subtitle_page.m_Y = Y; m_page_open = 1; handleLine(data + 8, 32); } - } else + } else if (Y < 26) // directly displayable packet { - /* data for the selected page? */ - if ((m_M == m_page_M) && m_page_open) + /* data for the selected page ? */ + if (M == m_page_M && m_page_open) + { + m_subtitle_page.m_Y = Y; handleLine(data, 40); + } } +/* else + { + if (M == m_page_M && m_page_open) + eDebug("ignore packet %d, designation code %d", Y, decode_hamming_84(data)); + }*/ } } @@ -189,7 +253,10 @@ int eDVBTeletextParser::start(int pid) m_page_open = 0; if (m_pes_reader) + { + m_pid = pid; return m_pes_reader->start(pid); + } else return -1; } @@ -209,13 +276,13 @@ void eDVBTeletextParser::handleLine(unsigned char *data, int len) for (int i=0; i= 0x20)) { @@ -257,25 +324,30 @@ void eDVBTeletextParser::handleLine(unsigned char *data, int len) } } } - eDebug(""); + //eDebug(""); addSubtitleString(color, text); } void eDVBTeletextParser::handlePageEnd(int have_pts, const pts_t &pts) { - eDebug("handle page end"); +// eDebug("handle page end"); addSubtitleString(-2, ""); /* end last line */ m_subtitle_page.m_have_pts = have_pts; m_subtitle_page.m_pts = pts; m_subtitle_page.m_timeout = 90000 * 20; /* 20s */ - sendSubtitlePage(); /* send assembled subtitle page to display */ + if (m_page_X != 0) + sendSubtitlePage(); /* send assembled subtitle page to display */ } -void eDVBTeletextParser::setPage(int page) +void eDVBTeletextParser::setPageAndMagazine(int page, int magazine) { - m_page_M = (page >> 8) & 7; /* magazine to look for */ - m_page_X = page & 0xFF; /* page number */ + if (page > 0) + eDebug("enable teletext subtitle page %x%02x", magazine, page); + else + eDebug("disable teletext subtitles"); + m_page_M = magazine&7; /* magazine to look for */ + m_page_X = page&0xFF; /* page number */ } void eDVBTeletextParser::connectNewPage(const Slot1 &slot, ePtr &connection) @@ -286,18 +358,56 @@ void eDVBTeletextParser::connectNewPage(const Slot1= 0x20) + { + unsigned char offs = NationalReplaceMap[c]; + if (offs) + { + unsigned int utf8_code = + NationalOptionSubsets[nat_subset*14+offs]; + if (utf8_code > 0xFFFFFF) + out[outidx++]=(utf8_code&0xFF000000)>>24; + if (utf8_code > 0xFFFF) + out[outidx++]=(utf8_code&0xFF0000)>>16; + if (utf8_code > 0xFF) + out[outidx++]=(utf8_code&0xFF00)>>8; + out[outidx++]=utf8_code&0xFF; + } + else + out[outidx++] = c; + } + ++idx; + } + // eDebug("color %d, m_subtitle_color %d", color, m_subtitle_color); gRGB rgbcol((color & 1) ? 255 : 128, (color & 2) ? 255 : 128, (color & 4) ? 255 : 128); - if ((color != m_subtitle_color || force_cell) && !m_subtitle_text.empty() && ((color == -2) || !string.empty())) + if ((color != m_subtitle_color || force_cell) && !m_subtitle_text.empty() && ((color == -2) || outidx)) { // eDebug("add text |%s|: %d != %d || %d", m_subtitle_text.c_str(), color, m_subtitle_color, force_cell); m_subtitle_page.m_elements.push_back(eDVBTeletextSubtitlePageElement(rgbcol, m_subtitle_text)); @@ -305,18 +415,18 @@ void eDVBTeletextParser::addSubtitleString(int color, std::string string) } else if (!m_subtitle_text.empty() && m_subtitle_text[m_subtitle_text.size()-1] != ' ') m_subtitle_text += " "; - if (!string.empty()) + if (outidx) { // eDebug("set %d as new color", color); m_subtitle_color = color; - m_subtitle_text += string; + m_subtitle_text += std::string((const char*)out, outidx); } } void eDVBTeletextParser::sendSubtitlePage() { - eDebug("subtitle page:"); - for (unsigned int i = 0; i < m_subtitle_page.m_elements.size(); ++i) - eDebug("%s", m_subtitle_page.m_elements[i].m_text.c_str()); +// eDebug("subtitle page:"); + //for (unsigned int i = 0; i < m_subtitle_page.m_elements.size(); ++i) + // eDebug("%s", m_subtitle_page.m_elements[i].m_text.c_str()); m_new_subtitle_page(m_subtitle_page); }