fix polish subtitles on HBO services.. 2nd try ;)
[enigma2.git] / lib / dvb / teletext.cpp
index 93b7cc6..7cef7b2 100644 (file)
@@ -9,7 +9,7 @@
 
 unsigned char NationalOptionSubsetsLookup[16*8] =
 {
-       1, 4, 11, 5, 3, 8, 0, 1,
+       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,
@@ -43,7 +43,7 @@ unsigned char NationalReplaceMap[128] =
 // see table 36 in ETSI EN 300 706
 
 unsigned int NationalOptionSubsets[13*14] = {
-       0, 0x0023, 0xc5af, 0xc48d, 0xc5a5, 0xc5be, 0xc3bd, 0xc3ad, 0xc599, 0xc3a9, 0xc3a1, 0xc49b, 0xc3ba, 0xc5a1, // Slovak/Czech
+       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
@@ -58,9 +58,76 @@ unsigned int NationalOptionSubsets[13*14] = {
        0, 0xee8080/*FIXME*/, 0xc7a7, 0xc4b0, 0xc59e, 0xc396, 0xc387, 0xc39c, 0xc7a6, 0xc4b1, 0xc59f, 0xc3b6, 0xc3a7, 0xc3bc  // Turkish
 };
 
+unsigned short diacr_upper_cmap[26*15] = {
+       0xc380, 0xc381, 0xc382, 0xc383, 0xc480, 0xc482, 0x0000, 0xc384, 0x0000, 0xc385, 0x0000, 0x0000, 0x0000, 0xc484, 0xc482,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc486, 0xc488, 0x0000, 0x0000, 0xc48c, 0xc48a, 0x0000, 0x0000, 0x0000, 0xc387, 0x0000, 0x0000, 0x0000, 0xc48c,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc48e, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc48e,
+       0xc388, 0xc389, 0xc38a, 0x0000, 0xc492, 0xc494, 0xc496, 0xc38b, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc498, 0xc49a,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0xc49c, 0x0000, 0x0000, 0xc49e, 0xc4a0, 0x0000, 0x0000, 0x0000, 0xc4a2, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0xc4a4, 0x0000, 0xc4a6, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0xc38c, 0xc38d, 0xc38e, 0xc4a8, 0xc4aa, 0xc4ac, 0xc4b0, 0xc38f, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc4ae, 0xc4ac,
+       0x0000, 0x0000, 0xc4b4, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc4b6, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc4b9, 0x0000, 0x0000, 0x0000, 0x0000, 0xc4bf, 0x0000, 0x0000, 0x0000, 0xc4bb, 0x0000, 0x0000, 0x0000, 0xc4bd,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc583, 0x0000, 0xc391, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc585, 0x0000, 0x0000, 0x0000, 0xc587,
+       0xc392, 0xc393, 0xc394, 0xc395, 0xc58c, 0xc58e, 0x0000, 0xc396, 0x0000, 0x0000, 0x0000, 0x0000, 0xc590, 0x0000, 0xc58e,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc594, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc596, 0x0000, 0x0000, 0x0000, 0xc598,
+       0x0000, 0xc59a, 0xc59c, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc59e, 0x0000, 0x0000, 0x0000, 0xc5a0,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc5a2, 0x0000, 0x0000, 0x0000, 0xc5a4,
+       0xc399, 0xc39a, 0xc39b, 0xc5a8, 0xc5aa, 0xc5ac, 0x0000, 0xc39c, 0x0000, 0xc5ae, 0x0000, 0x0000, 0xc5b0, 0xc5b2, 0xc5ac,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0xc5b4, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc39d, 0xc5b6, 0x0000, 0x0000, 0x0000, 0x0000, 0xc5b8, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc5b9, 0x0000, 0x0000, 0x0000, 0x0000, 0xc5bb, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc5bd
+};
+
+unsigned short diacr_lower_cmap[26*15] = {
+       0xc3a0, 0xc3a1, 0xc3a2, 0xc3a3, 0xc481, 0xc483, 0x0000, 0xc3a4, 0x0000, 0xc3a5, 0x0000, 0x0000, 0x0000, 0xc485, 0xc483,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc487, 0xc489, 0x0000, 0x0000, 0xc48d, 0xc48b, 0x0000, 0x0000, 0x0000, 0xc3a7, 0x0000, 0x0000, 0x0000, 0xc48d,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc48f, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc48f,
+       0xc3a8, 0xc3a9, 0xc3aa, 0x0000, 0xc493, 0xc495, 0xc497, 0xc3ab, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc499, 0xc49b,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0xc49d, 0x0000, 0x0000, 0xc49f, 0xc4a1, 0x0000, 0x0000, 0x0000, 0xc4a3, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0xc4a5, 0x0000, 0xc4a7, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0xc3ac, 0xc3ad, 0xc3ae, 0xc4a9, 0xc4ab, 0xc4ad, 0xc4b1, 0xc3af, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc4af, 0xc4ad,
+       0x0000, 0x0000, 0xc4b5, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc4b7, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc4ba, 0x0000, 0x0000, 0x0000, 0x0000, 0xc580, 0x0000, 0x0000, 0x0000, 0xc4bc, 0x0000, 0x0000, 0x0000, 0xc4be,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc584, 0x0000, 0xc3b1, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc586, 0x0000, 0x0000, 0x0000, 0xc588,
+       0xc3b2, 0xc3b3, 0xc3b4, 0xc3b5, 0xc58d, 0xc58f, 0x0000, 0xc3b6, 0x0000, 0x0000, 0x0000, 0x0000, 0xc591, 0x0000, 0xc58f,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc595, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc597, 0x0000, 0x0000, 0x0000, 0xc599,
+       0x0000, 0xc59b, 0xc59d, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc59f, 0x0000, 0x0000, 0x0000, 0xc5a1,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc5a3, 0x0000, 0x0000, 0x0000, 0xc5a5,
+       0xc3b9, 0xc3ba, 0xc3bb, 0xc5a9, 0xc5ab, 0xc5ad, 0x0000, 0xc3bc, 0x0000, 0xc5af, 0x0000, 0x0000, 0xc5b1, 0xc5b3, 0xc5ad,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0xc5b5, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc3bd, 0xc5b7, 0x0000, 0x0000, 0x0000, 0x0000, 0xc3bf, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+       0x0000, 0xc5ba, 0x0000, 0x0000, 0x0000, 0x0000, 0xc5bc, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xc5be
+};
+
+unsigned int Latin_G2_set[6*16] = {
+       0x0020, 0xc2a1, 0xc2a2, 0xc2a3, 0x0024, 0xc2a5, 0x0023, 0xc2a7, 0xc2a4, 0xc2b4, 0x0022, 0xc2ab, 0x003c, 0x005e, 0x003d, 0x0076,
+       0xc2b0, 0xc2b1, 0xc2b2, 0xc2b3, 0xc397, 0xc2b5, 0xc2b6, 0xc2b7, 0xc3b7, 0xc2b4, 0x0022, 0xc2bb, 0xc2bc, 0xc2bd, 0xc2be, 0xc2bf,
+       0x0020, 0x0060, 0xc2b4, 0xcb86, 0x007e, 0xcb89, 0xcb98, 0xcb99, 0xcc88, 0x002e, 0xcb9a, 0x0020, 0x005f, 0x0022, 0x0020, 0xcb98,
+       0x002d, 0xc2b9, 0xc2ae, 0xc2a9, 0xc4a2, 0x002a, 0xc2ac, 0xc0b0, 0xceb1, 0x0020, 0x0020, 0x0020, 0x002a, 0x002a, 0x002a, 0x002a,
+       0xcea9, 0xc386, 0xc490, 0x0061, 0xc4a6, 0x0020, 0xc4b2, 0xc4bf, 0xc581, 0xc398, 0xc592, 0x006f, 0xc39e, 0xc5a6, 0xc58a, 0xc589,
+       0xc4b8, 0xc3a6, 0xc491, 0xc48f, 0xc4a7, 0xc4b1, 0xc4b3, 0xc580, 0xc582, 0xc3b8, 0xc593, 0xc39f, 0xc3be, 0xc5a7, 0xc58b, 0x0020,
+};
+
 // 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.
+// for subtitles. And it ONLY support LATIN Charsets yet!
  
 DEFINE_REF(eDVBTeletextParser);
 
@@ -77,23 +144,21 @@ static inline unsigned char decode_odd_parity(unsigned char *b)
 
 static inline unsigned char decode_hamming_84(unsigned char *b)
 {
-       unsigned char res = 0;
-       res |= (*b << 3) & 8;
-       res |= (*b     ) & 4;
-       res |= (*b >> 3) & 2;
-       res |= (*b >> 6) & 1;
-       return res;
+       return ((*b << 3) & 8) | ((*b     ) & 4) | ((*b >> 3) & 2) | ((*b >> 6) & 1);
 }
 
 static inline unsigned long decode_hamming_2418(unsigned char *b)
 {
-       unsigned long h24 = b[0] | (b[1] << 8) | (b[2] << 16);
-       
-       return
-               ((h24 & 0x000004) >> 2) |
-               ((h24 & 0x000070) >> 3) |
-               ((h24 & 0x007f00) >> 4) |
-               ((h24 & 0x7f0000) >> 5);
+       static const unsigned char rev[16] = {
+               0x00,0x08,0x04,0x0c,
+               0x02,0x0a,0x06,0x0e,
+               0x01,0x09,0x05,0x0d,
+               0x03,0x0b,0x07,0x0f
+       };
+       b[0] = rev[b[0] >> 4] | (rev[b[0] & 0xf] << 4);
+       b[1] = rev[b[1] >> 4] | (rev[b[1] & 0xf] << 4);
+       b[2] = rev[b[2] >> 4] | (rev[b[2] & 0xf] << 4);
+       return ((b[0] & 0x04) >> 2) | ((b[0] & 0x70) >> 3) | ((b[1] & 0x7f) << 4) | ((b[2] & 0x7f) << 11);
 }
 
 static int extractPTS(pts_t &pts, unsigned char *pkt)
@@ -121,7 +186,7 @@ eDVBTeletextParser::eDVBTeletextParser(iDVBDemux *demux)
 {
        setStreamID(0xBD); /* as per en 300 472 */
        
-       setPageAndMagazine(0,0);
+       setPageAndMagazine(-1, -1);
        
        if (demux->createPESReader(eApp, m_pes_reader))
                eDebug("failed to create teletext subtitle PES reader!");
@@ -133,6 +198,19 @@ eDVBTeletextParser::~eDVBTeletextParser()
 {
 }
 
+char *get_bits(int val, int count)
+{
+       static char buf[33];
+       memset(buf, 0, 32);
+       if (count < 33)
+               for (int i=0; i < count; ++i)
+               {
+                       buf[(count-i)-1]=val&1?'1':'0';
+                       val>>=1;
+               }
+       return buf;
+}
+
 void eDVBTeletextParser::processPESPacket(__u8 *pkt, int len)
 {
        unsigned char *p = pkt;
@@ -153,7 +231,7 @@ 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;
                
@@ -169,87 +247,218 @@ void eDVBTeletextParser::processPESPacket(__u8 *pkt, int len)
                        break;
                }
                
-               if (data_unit_id != 0x03)
-               {
-                       /* eDebug("non subtitle data unit id %d", data_unit_id); */
-                       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 line_offset =*/ *p++; len--;
                unsigned char framing_code = *p++; len--;
 
                int magazine_and_packet_address = decode_hamming_84(p++); len--;
                magazine_and_packet_address |= decode_hamming_84(p++)<<4; len--;
-               
+
                unsigned char *data = p; p += 40; len -= 40;
                
                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)
                        {
+                               eDebug("Page End %d %lld", !have_pts, pts);
                                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 */
+
+                       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 = m_X & 0xFF;
-                               s.teletext_magazine_number = m_M & 7;
+                               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)
                        {
+                               eDebug("Page Start %d %lld", !have_pts, pts);
+                               m_C = C;
+                               m_Y = Y;
                                handlePageStart();
                                m_page_open = 1;
+                               m_box_open = 0;
                                handleLine(data + 8, 32);
                        }
-               } else if (m_Y < 26) // directly displayable packet
+               } else if (Y < 26) // directly displayable packet
                {
                        /* data for the selected page ? */
-                       if (m_M == m_page_M && m_page_open)
+                       if (M == m_page_M && m_page_open)
+                       {
+                               m_Y = Y;
+                               m_box_open = 0;
                                handleLine(data, 40);
+                       }
+               } else if (Y == 26 && m_page_open && M == m_page_M)
+               {
+//                     int designation_code = decode_hamming_84(data);
+                       int display_row=-1, display_column=-1;
+                       for (int a = 1; a < 40; a+=3)
+                       {
+                               int val;
+                               if ((val=decode_hamming_2418(data+a)) >= 0)
+                               {
+                                       unsigned char addr = val & 0x3F;
+                                       unsigned char mode = (val >> 6) & 0x1F;
+                                       unsigned char data = (val >> 11) & 0x7F;
+                                       if (addr == 0x3f && mode == 0x1f) // termination marker
+                                               break;
+                                       if (addr >= 40)
+                                       {
+                                               if (mode == 4)
+                                               {
+                                                       display_row = addr - 40;
+                                                       continue;
+                                               }
+                                               else
+                                                       eDebugNoNewLine("ignore unimplemented: ");
+                                       }
+                                       else //0..39 means column 0..39
+                                       {
+                                               if (display_row != -1)
+                                               {
+                                                       display_column = addr;
+//                                                     eDebugNoNewLine("PosX(%d) ", display_column);
+//                                                     eDebugNoNewLine("PosY(%d) ", display_row);
+                                                       if (mode > 15) //char from G0 set w/ diacr.
+                                                       {
+                                                               unsigned int ch=data;
+                                                               if (!mode&0xF)
+                                                               {
+                                                                       if (data == 0x2A)
+                                                                               ch = '@';
+                                                               }
+                                                               else
+                                                               {
+                                                                       if (ch > 96 && ch < 123)
+                                                                               ch = diacr_lower_cmap[(ch-97)*15+(mode&0xF)-1];
+                                                                       else if (ch > 64 && ch < 91)
+                                                                               ch = diacr_upper_cmap[(ch-65)*15+(mode&0xF)-1];
+                                                               }
+                                                               if (ch)
+                                                                       m_modifications[(display_row<<16)|display_column] = ch ? ch : data;
+                                                               else /* when data is 0 we set the diacr. mark later on the existing character ..
+                                                                               this isn't described in the EN300706.. but i have seen this on "Das Erste" */
+                                                                       m_modifications[(display_row<<16)|display_column] = (mode&0xF);
+//                                                             eDebug("char(%04x) w/ diacr. mark", ch);
+                                                               continue;
+                                                       }
+                                                       else if (mode == 15) // char from G2 set
+                                                       {
+                                                               if (data > 0x19)
+                                                               {
+                                                                       unsigned int ch=Latin_G2_set[data-0x20];
+                                                                       m_modifications[(display_row<<16)|display_column] = ch;
+//                                                                     eDebug("char(%04x) from G2 set", ch);
+                                                                       continue;
+                                                               }
+                                                               else
+                                                                       eDebugNoNewLine("ignore G2 char < 0x20: ");
+                                                       }
+                                                       else
+                                                               eDebugNoNewLine("ignore unimplemented: ");
+                                               }
+                                               else
+                                                       eDebugNoNewLine("row is not selected.. ignore: ");
+                                       }
+                                       eDebugNoNewLine("triplet = %08x(%s) ", val, get_bits(val, 18));
+                                       eDebugNoNewLine("address = %02x(%s) ", addr, get_bits(addr, 6));
+                                       eDebugNoNewLine("mode = %02x(%s) ", mode, get_bits(mode, 5));
+                                       eDebug("data = %02x(%s)", data, get_bits(data, 7));
+                               }
+                       }
+               } else if (Y > 29)
+                       /*eDebug("non handled packet 30, 31", Y, decode_hamming_84(data))*/;
+               else if (Y == 29 && M == m_page_M)
+               {
+                       int designation_code = decode_hamming_84(data++);
+                       if (designation_code == 0) // 29/0
+                       {
+                               m_M29_t1 = decode_hamming_2418(data);
+                               m_M29_t2 = decode_hamming_2418(data+3);
+                               if ((m_M29_t1 & 0xF) == 0) // format1
+                                       m_M29_0_valid = 1;
+                               else
+                                       eDebug("non handled packet M/%d/0 format %d", Y, m_M29_t1 & 0xF);
+                       }
+                       else
+                               eDebug("non handled packet M/%d/%d", Y, designation_code);
                }
-/*             else
+               else if (m_page_open && M == m_page_M)
                {
-                       if (m_M == m_page_M && m_page_open)
-                               eDebug("ignore packet %d, disgnation code %d", m_Y, decode_hamming_84(data));
-               }*/
+                       int designation_code = decode_hamming_84(data++);
+                       if (Y == 28 && designation_code == 0)   // 28/0
+                       {
+#if 1
+                               m_X28_t1 = decode_hamming_2418(data);
+                               m_X28_t2 = decode_hamming_2418(data+3);
+                               if ((m_X28_t1 & 0xF) == 0) // format1
+                                       m_X28_0_valid = 1;
+                               else
+                                       eDebug("non handled packet X/%d/0 format %d", Y, m_X28_t1 & 0xF);
+#else
+                                       int i=0;
+                                       for (; i < 39; i+=3)
+                                       {
+                                               int tripletX = decode_hamming_2418(data+i);
+                                               if (tripletX >= 0)
+                                               {
+                                                       if (i == 0)
+                                                       {
+                                                               if ((m_X28_t1 & 0xF) == 0) // format1
+                                                                       m_X28_0_valid = 1;
+                                                               m_X28_t1 = tripletX;
+                                                       }
+                                                       else if (i == 1)
+                                                               m_X28_t2 = tripletX;
+
+                                                       char *c = get_bits(tripletX, 18);
+                                                       int x=0;
+                                                       for (; x < 18; ++x)
+                                                               eDebugNoNewLine("%c", c[x]);
+                                                       eDebug("");
+                                               }
+                                               else
+                                                       eDebug("decode_hamming_2418 failed!\n");
+                                               data += 3;
+                                       }
+#endif
+                       }
+                       else
+                               eDebug("non handled packet X/%d/%d", Y, designation_code);
+               }
        }
 }
 
@@ -268,11 +477,15 @@ int eDVBTeletextParser::start(int pid)
 
 void eDVBTeletextParser::handlePageStart()
 {
-//     if (m_C & (1<<4)) /* erase flag set */
-
-               /* we are always erasing the page, 
-                  even when the erase flag is not set. */
-       m_subtitle_page.clear();
+       if (m_C & (1<<4)) /* erase flag set */
+       {
+               m_subtitle_page.clear();
+               m_modifications.clear();
+               m_X28_0_valid = 0;
+//             eDebug("erase page!");
+       }
+//     else
+//             eDebug("no erase flag set!");
 }
 
 void eDVBTeletextParser::handleLine(unsigned char *data, int len)
@@ -293,44 +506,119 @@ void eDVBTeletextParser::handleLine(unsigned char *data, int len)
                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_C & (1<<14) ? 1 : 0) |
+                                       (m_C & (1<<13) ? 2 : 0) |
+                                       (m_C & (1<<12) ? 4 : 0),
+               nat_subset_2 = NationalOptionSubsetsLookup[Gtriplet*8+nat_opts],
+               nat_subset = nat_subset_2,
+               second_G0_set = 0;
+
+       if (m_X28_0_valid)
+       {
+               nat_subset = NationalOptionSubsetsLookup[(m_X28_t1 >> 7) & 0xF];
+               nat_subset_2 = NationalOptionSubsetsLookup[((m_X28_t1 >> 14) & 0xF) | ((m_X28_t2 & 7) << 4)];
+//             eDebug("X/28/0 nat_subset %d, nat_subset2 %d", nat_subset, nat_subset_2);
+       }
+       else if (m_M29_0_valid)
+       {
+               nat_subset = NationalOptionSubsetsLookup[(m_M29_t1 >> 7) & 0xF];
+               nat_subset_2 = NationalOptionSubsetsLookup[((m_M29_t1 >> 14) & 0xF) | ((m_M29_t2 & 7) << 4)];
+//             eDebug("M/29/0 nat_subset %d, nat_subset2 %d", nat_subset, nat_subset_2);
+       }
+/*     else
+               eDebug("nat_opts = %d, nat_subset = %d, C121314 = %d%d%d",
+                       nat_opts, nat_subset,
+                       (m_C & (1<<12))?1:0,
+                       (m_C & (1<<13))?1:0,
+                       (m_C & (1<<14))?1:0);*/
+
 //     eDebug("handle subtitle line: %d len", len);
        for (int i=0; i<len; ++i)
        {
                unsigned char b = decode_odd_parity(data + i);
-       
+               std::map<int,unsigned int>::iterator it = m_modifications.find((m_Y<<16)|i);
+
+               if (it != m_modifications.end())
+               {
+                       unsigned int utf8_code = it->second;
+//                     eDebugNoNewLine("%c[%d]", b, b);
+                       if (utf8_code < 0x10)
+                       {
+                               int mode = utf8_code;
+                               if (b > 96 && b < 123)
+                                       utf8_code = diacr_lower_cmap[(b-97)*15+mode-1];
+                               else if (b > 64 && b < 91)
+                                       utf8_code = diacr_upper_cmap[(b-65)*15+mode-1];
+                       }
+                       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;
+                       if (utf8_code)
+                               out[outidx++]=utf8_code&0xFF;
+                       m_modifications.erase(it);
+                       continue;
+               }
+
                if (b < 0x10) /* spacing attribute */
                {
                        if (b < 8) /* colors */
                        {
                                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)
-                       {
+                       }
+                       else if (b == 0xd)
                                m_double_height = m_Y + 1;
-                       } else if (b != 0xa && b != 0xb) /* box */
+                       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(%d)", b, b);
                                /* no more than one whitespace, only printable chars */
                        if (((!last_was_white) || (b != ' ')) && (b >= 0x20))
                        {
-                               text += b;
+                               int cur_nat_subset = second_G0_set ? nat_subset_2 : nat_subset;
+
+                               unsigned char offs = NationalReplaceMap[b];
+                               if (offs)
+                               {
+                                       unsigned int utf8_code =
+                                               NationalOptionSubsets[cur_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 == ' ';
                        }
+                       else if (b == 0x1b) // ESC ... switch between default G0 and second G0 charset
+                               second_G0_set ^= 1;
                }
        }
-       //eDebug("");
-       addSubtitleString(color, text);
+//     eDebug("");
+       addSubtitleString(color, std::string((const char*)out, outidx));
 }
 
 void eDVBTeletextParser::handlePageEnd(int have_pts, const pts_t &pts)
@@ -348,11 +636,16 @@ void eDVBTeletextParser::handlePageEnd(int have_pts, const pts_t &pts)
 void eDVBTeletextParser::setPageAndMagazine(int page, int magazine)
 {
        if (page > 0)
-               eDebug("enable teletext subtitle page %d", page);
+               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 */
+       m_M29_0_valid = 0;
+       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)
@@ -362,8 +655,7 @@ void eDVBTeletextParser::connectNewPage(const Slot1<void, const eDVBTeletextSubt
 
 void eDVBTeletextParser::addSubtitleString(int color, std::string string)
 {
-//     eDebug("add subtitle string: %s, col %d", string.c_str(), color);
-       static unsigned char out[512];
+//     eDebug("(%d)add subtitle string: %s, col %d", m_Y, string.c_str(), color);
        int force_cell = 0;
 
        if (string.substr(0, 2) == "- ")
@@ -372,38 +664,9 @@ void eDVBTeletextParser::addSubtitleString(int color, std::string string)
                force_cell = 1;
        }
 
-       int len = string.length(),
-               idx = 0,
-               outidx = 0,
-               Gtriplet = 0,
-               nat_opts = (m_C >> 11) & 0x7,
-               nat_subset = NationalOptionSubsetsLookup[Gtriplet*8+nat_opts];
-       while (idx < len)
-       {
-               unsigned char c = string[idx];
-               if (c >= 0x20)
-               {
-                       if (NationalReplaceMap[c])
-                       {
-                               unsigned int utf8_code =
-                                       NationalOptionSubsets[nat_subset*14+c];
-                               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) || outidx))
+       if ((color != m_subtitle_color || force_cell) && !m_subtitle_text.empty() && ((color == -2) || !string.empty()))
        {
 //             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));
@@ -411,18 +674,22 @@ 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 (outidx)
+       if (!string.empty())
        {
 //             eDebug("set %d as new color", color);
                m_subtitle_color = color;
-               m_subtitle_text += std::string((const char*)out, outidx);
+               m_subtitle_text += string;
        }
 }
 
 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);
+       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);
 }