#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.
-
- */
+// 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! */
{
setStreamID(0xBD); /* as per en 300 472 */
- setPage(-1);
+ setPageAndMagazine(-1, -1);
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);
}
while (len > 2)
{
- unsigned char data_unit_id = *p++;
+ /*unsigned char data_unit_id = */*p++;
unsigned char data_unit_length = *p++;
len -= 2;
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--;
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) && !(C & (1<<5))) /* 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;
+ m_box_open = 0;
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;
+ m_box_open = 0;
handleLine(data, 40);
+ }
+ } else if (Y > 29)
+ {
+ }
+ else if (m_page_open)
+ {
+ if (M == m_page_M)
+ eDebug("ignore packet X/%d/%d", Y, decode_hamming_84(data));
+ else
+ eDebug("ignore packet M/%d/%d", Y, decode_hamming_84(data));
}
}
}
m_page_open = 0;
if (m_pes_reader)
+ {
+ m_pid = pid;
return m_pes_reader->start(pid);
+ }
else
return -1;
}
for (int i=0; i<len; ++i)
eDebugNoNewLine("%02x ", decode_odd_parity(data + i));
eDebug(""); */
- if (!m_Y) /* first line is page header, we don't need that. */
+ if (!m_subtitle_page.m_Y) /* first line is page header, we don't need that. */
{
m_double_height = -1;
return;
}
- if (m_double_height == m_Y)
+ if (m_double_height == m_subtitle_page.m_Y)
{
m_double_height = -1;
return;
}
- int last_was_white = 1, color = 7; /* start with whitespace. start with color=white. (that's unrelated.) */
-
- std::string text;
-
+ int last_was_white = 1, color = 1; /* start with whitespace. start with color=white. (that's unrelated.) */
+
+ static unsigned char out[128];
+
+ int outidx = 0,
+ Gtriplet = 0,
+ nat_opts = (m_subtitle_page.m_C & (1<<14) ? 1 : 0) |
+ (m_subtitle_page.m_C & (1<<13) ? 2 : 0) |
+ (m_subtitle_page.m_C & (1<<12) ? 4 : 0),
+ nat_subset = NationalOptionSubsetsLookup[Gtriplet*8+nat_opts];
+/* eDebug("nat_opts = %d, nat_subset = %d, C121314 = %d%d%d, m_C %08x",
+ nat_opts, nat_subset,
+ (m_subtitle_page.m_C & (1<<12))?1:0,
+ (m_subtitle_page.m_C & (1<<13))?1:0,
+ (m_subtitle_page.m_C & (1<<14))?1:0,
+ m_subtitle_page.m_C); */
+
// eDebug("handle subtitle line: %d len", len);
for (int i=0; i<len; ++i)
{
{
if (b != color) /* new color is split into a new string */
{
- addSubtitleString(color, text);
- text = "";
+ addSubtitleString(color, std::string((const char*)out, outidx));
+ outidx = 0;
color = b;
}
- } else if (b == 0xd)
- {
- m_double_height = m_Y + 1;
- } else if (b != 0xa && b != 0xb) /* box */
+ }
+ else if (b == 0xd)
+ m_double_height = m_subtitle_page.m_Y + 1;
+ else if (b == 0xa) // close box
+ m_box_open=0;
+ else if (b == 0xb) // open box
+ ++m_box_open;
+ else
eDebug("[ignore %x]", b);
/* ignore other attributes */
- } else
+ } else if (m_box_open>1)
{
- eDebugNoNewLine("%c", b);
+ //eDebugNoNewLine("%c", b);
/* no more than one whitespace, only printable chars */
if (((!last_was_white) || (b != ' ')) && (b >= 0x20))
{
- text += b;
+ unsigned char offs = NationalReplaceMap[b];
+ 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++] = b;
last_was_white = b == ' ';
}
}
}
- eDebug("");
- addSubtitleString(color, text);
+ //eDebug("");
+ addSubtitleString(color, std::string((const char*)out, outidx));
}
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; /* magazine to look for */
+ if (magazine != -1)
+ m_page_M &= 7;
+ m_page_X = page; /* page number */
+ if (page != -1)
+ m_page_X &= 0xFF;
}
void eDVBTeletextParser::connectNewPage(const Slot1<void, const eDVBTeletextSubtitlePage&> &slot, ePtr<eConnection> &connection)
void eDVBTeletextParser::addSubtitleString(int color, std::string string)
{
// eDebug("add subtitle string: %s, col %d", string.c_str(), color);
-
int force_cell = 0;
-
+
if (string.substr(0, 2) == "- ")
{
string = string.substr(2);
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());
- m_new_subtitle_page(m_subtitle_page);
+// eDebug("subtitle page:");
+ bool empty=true;
+ if (empty)
+ for (unsigned int i = 0; i < m_subtitle_page.m_elements.size(); ++i)
+ if (!m_subtitle_page.m_elements[i].m_text.empty())
+ empty=false;
+ if (!empty)
+ m_new_subtitle_page(m_subtitle_page);
}
projects / vuplus_dvbapp / blobdiff