#include <lib/dvb/idemux.h>
#include <lib/gdi/gpixmap.h>
-/*
- 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.
-
- */
+// Try to map teletext characters into ISO-8859-1 charset
+// Use similar looking or similar meaning characters when possible.
+
+// 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 LatinNationalOptionSubsetsLookup[16*8] =
+{
+ 1, 4, 11, 5, 3, 8, 0, 1,
+ 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 LatinNationalReplaceMap[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
+};
+
+// latin national option subsets
+// see table 36 in ETSI EN 300 706
+unsigned char LatinNationalOptionSubsets[13*14] = {
+ 0, '#', 'u', 'c', 't', 'z', 'ý', 'í', 'r', 'é', 'á', 'e', 'ú', 's', // Slovak/Czech
+ 0, '£', '$', '@', '-', '½', '-', '|', '#', '-', '¼', '#', '¾', '÷', // English
+ 0, '#', 'õ', 'S', 'Ä', 'Ö', 'Z', 'Ü', 'Õ', 's', 'ä', 'ö', 'z', 'ü', // Estonian
+ 0, 'é', 'ï', 'à', 'ë', 'ê', 'ù', 'î', '#', 'è', 'â', 'ô', 'û', 'ç', // French
+ 0, '#', '$', '§', 'Ä', 'Ö', 'Ü', '^', '_', 'º', 'ä', 'ö', 'ü', 'ß', // German
+ 0, '£', '$', 'é', 'º', 'ç', '-', '|', '#', 'ù', 'à', 'ò', 'è', 'ì', // Italian
+ 0, '#', '$', 'S', 'e', 'e', 'Z', 'c', 'u', 's', 'a', 'u', 'z', 'i', // Lithuanian/Lettish
+ 0, '#', 'n', 'a', 'Z', 'S', 'L', 'c', 'ó', 'e', 'z', 's', 'l', 'z', // Polish
+ 0, 'ç', '$', 'i', 'á', 'é', 'í', 'ó', 'ú', '¿', 'ü', 'ñ', 'è', 'à', // Spanish/Portuguese
+ 0, '#', '¤', 'T', 'Â', 'S', 'A', 'Î', 'i', 't', 'â', 's', 'a', 'î', // Rumanian
+ 0, '#', 'Ë', 'C', 'C', 'Z', 'D', 'S', 'ë', 'c', 'c', 'z', 'd', 's', // Slovenian/Serbian/Croation
+ 0, '#', '¤', 'É', 'Ä', 'Ö', 'Å', 'Ü', '_', 'é', 'ä', 'ö', 'å', 'ü', // Finnish/Hungarian/Swedish
+ 0, 'T', 'g', 'I', 'S', 'Ö', 'Ç', 'Ü', 'G', 'i', 's', 'ö', 'ç', 'ü' // Turkish
+};
+
+unsigned char MapTeletextG0Latin1Char(int Gtriplet, int NatOpts, unsigned char inchar)
+{
+ int num = LatinNationalOptionSubsetsLookup[(Gtriplet&0xf)*(NatOpts&0x7)];
+ unsigned char c = inchar&0x7f;
+ unsigned char cc = LatinNationalReplaceMap[c];
+ if(cc)
+ return LatinNationalOptionSubsets[num*cc];
+ else
+ return c;
+}
+
+// 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! */
{
setStreamID(0xBD); /* as per en 300 472 */
- setPage(-1);
+ setPageAndMagazine(0,0);
if (demux->createPESReader(eApp, m_pes_reader))
eDebug("failed to create teletext subtitle PES reader!");
break;
}
+ 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 serial_mode = m_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 == 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);
-
+ {
+ eDVBServicePMTHandler::subtitleStream s;
+ s.pid = m_pid;
+ s.subtitling_type = 0x01; // ebu teletext subtitle
+ s.teletext_page_number = m_X & 0xFF;
+ s.teletext_magazine_number = m_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 == m_page_M && m_X == m_page_X)
{
handlePageStart();
m_page_open = 1;
}
} else
{
- /* data for the selected page? */
- if ((m_M == m_page_M) && m_page_open)
+ /* data for the selected page ? */
+ if (m_M == m_page_M && m_page_open)
handleLine(data, 40);
}
}
m_page_open = 0;
if (m_pes_reader)
+ {
+ m_pid = pid;
return m_pes_reader->start(pid);
+ }
else
return -1;
}
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 %d", 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<void, const eDVBTeletextSubtitlePage&> &slot, ePtr<eConnection> &connection)
// eDebug("add subtitle string: %s, col %d", string.c_str(), color);
int force_cell = 0;
-
+
if (string.substr(0, 2) == "- ")
{
string = string.substr(2);
force_cell = 1;
}
+ int len = string.length();
+ int idx = 0;
+
+ while (idx < len)
+ {
+ if (string[idx] >= 0x20)
+ string[idx] = MapTeletextG0Latin1Char(0, (m_C >> 11), string[idx]);
+ ++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()))
projects / vuplus_dvbapp / blobdiff