+ unsigned char *p = pkt;
+
+ p += 4; len -= 4; /* start code, already be verified by pes parser */
+ p += 2; len -= 2; /* length, better use the argument */
+
+ p += 3; len -= 3; /* pes header */
+
+ p += 0x24; len -= 0x24; /* skip header */
+
+// eDebug("data identifier: %02x", *p);
+
+ p++; len--;
+
+ while (len > 2)
+ {
+ unsigned char data_unit_id = *p++;
+ unsigned char data_unit_length = *p++;
+ len -= 2;
+
+ if (len < data_unit_length)
+ {
+ eDebug("data_unit_length > len");
+ break;
+ }
+
+ if (data_unit_length != 44)
+ {
+ eDebug("illegal data unit length %d", data_unit_length);
+ break;
+ }
+
+ 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;
+// eDebug("line %d, framing code: %02x, M=%02x, Y=%02x", line_offset, framing_code, M, Y);
+
+ if (m_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;
+
+ /* page on the same magazine? end current page. */
+ if ((m_M == m_page_M) && (m_page_open))
+ {
+ handlePageEnd();
+ m_page_open = 0;
+ }
+
+ m_X = decode_hamming_84(data+1) * 0x10 + decode_hamming_84(data);
+
+ /* correct page on correct magazine? open page. */
+ if ((m_M == m_page_M) && (m_X == m_page_X))
+ {
+ handlePageStart();
+ m_page_open = 1;
+ handleLine(data + 8, 32);
+ }
+ } else
+ {
+ /* data for the selected page? */
+ if ((m_M == m_page_M) && m_page_open)
+ handleLine(data, 40);
+ }
+ }