static private void AddStructBIntro(byte[] aPacket, ref int nOffset, MagazineAndRow eMagAndRow)
{
aPacket[nOffset++] = 0x55; // Clock run-in
aPacket[nOffset++] = 0x55; // Clock run-in
aPacket[nOffset++] = 0x27; // Framing code
switch (eMagAndRow)
{
case MagazineAndRow.M8_Y0: // M == 0 == 8
aPacket[nOffset++] = 0x15; // M=0 Y=0 (header packet) == 000 00000 == 0000 0000 + hamming == 10101000 10101000 ==reverse 0x15 0x15
aPacket[nOffset++] = 0x15; //
break;
case MagazineAndRow.M8_Y28:
aPacket[nOffset++] = 0x15; //
aPacket[nOffset++] = 0xFD; //
break;
case MagazineAndRow.M8_Y20:
aPacket[nOffset++] = 0x15; //
aPacket[nOffset++] = 0x8C; //
break;
case MagazineAndRow.M8_Y22:
aPacket[nOffset++] = 0x15; //
aPacket[nOffset++] = 0x9B; //
break;
case MagazineAndRow.M1_Y0: // M == 0 == 8
aPacket[nOffset++] = 0x02; // M=0 Y=0 (header packet) == 000 00000 == 0000 0000 + hamming == 10101000 10101000 ==reverse 0x15 0x15
aPacket[nOffset++] = 0x15; //
break;
case MagazineAndRow.M1_Y28:
aPacket[nOffset++] = 0x02; //
aPacket[nOffset++] = 0xFD; //
break;
case MagazineAndRow.M1_Y20:
aPacket[nOffset++] = 0x02; //
aPacket[nOffset++] = 0x8C; //
break;
case MagazineAndRow.M1_Y22:
aPacket[nOffset++] = 0x02; //
aPacket[nOffset++] = 0x9B; //
break;
default:
throw new Exception("wrong magazine and row");
}
}
static public void GetPage888Packet22(byte[] aPacket, bool bFirstField, string sLine, ushort nPacketsCounter, MagazineAndRow eMagAndRow)
{
int nOffset = 0;
AddIntro(aPacket, ref nOffset); // 7
AddStructAToLine17(aPacket, ref nOffset, bFirstField); // 5
AddStructBIntro(aPacket, ref nOffset, eMagAndRow); // 5
AddText(aPacket, ref nOffset, sLine); // 40
AddFooter(aPacket, ref nOffset, nPacketsCounter); // 4
}
static public void GetPage888Packet28(byte[] aPacket, bool bFirstField, ushort nPacketsCounter, MagazineAndRow eMagAndRow)
{
int nOffset = 0;
AddIntro(aPacket, ref nOffset);
AddStructAToLine17(aPacket, ref nOffset, bFirstField);
AddStructBIntro(aPacket, ref nOffset, eMagAndRow);
aPacket[nOffset++] = 0x15; // DC 0000 Format 1 teletext 7+1 parity Cyrillic-2 (rus) nothing
aPacket[nOffset++] = 0x03; // Triplet #1:
aPacket[nOffset++] = 0x20; // --> teletext 7+1 parity Cyrillic-2 (rus) nothing
aPacket[nOffset++] = 0x82; //
for (int ii = 0; ii < 12; ii++)
{
aPacket[nOffset++] = 0x8B; // Empty Triplets
aPacket[nOffset++] = 0x80;
aPacket[nOffset++] = 0x00;
}
AddFooter(aPacket, ref nOffset, nPacketsCounter);
}
static public void GetPage8FFPacket0(byte[] aPacket, bool bFirstField, ushort nPacketsCounter, MagazineAndRow eMagAndRow) // closer
{
int nOffset = 0;
AddIntro(aPacket, ref nOffset);
AddStructAToLine17(aPacket, ref nOffset, bFirstField);
AddStructBIntro(aPacket, ref nOffset, eMagAndRow); // 5
aPacket[nOffset++] = 0xEA; // Page No FF 0xea
aPacket[nOffset++] = 0xEA; // Page No FF 0xea
aPacket[nOffset++] = 0x15; // subcode + some control bits
aPacket[nOffset++] = 0x15; // subcode + some control bits
aPacket[nOffset++] = 0x15; // subcode + some control bits
aPacket[nOffset++] = 0xD0; // subcode + some control bits --> subtitle
aPacket[nOffset++] = 0x73; // control bits
aPacket[nOffset++] = 0x15; // control bits --> supress header + was interrupted + parallel mode
aPacket[nOffset++] = 0x86; // data. Alpha
for (int ii = 0; ii < 31; ii++)
{
aPacket[nOffset++] = 0x20; // data SPACE = 0x20
}
AddFooter(aPacket, ref nOffset, nPacketsCounter);
}
