private bool createMpeg2Section(Collection<Mpeg2Section> sections)
{
if (RunParameters.Instance.TraceIDs.Contains("PIDHANDLER"))
Logger.Instance.Write(getPidID() + "Creating MPEG2 section");
mpeg2Section = new Mpeg2Section();
mpeg2Section.Data = new byte[length + 3];
mpeg2Section.Length = length + 3;
mpeg2Section.PID = pid;
mpeg2Section.Data[0] = table;
mpeg2Section.Data[1] = lengthByte1;
mpeg2Section.Data[2] = lengthByte2;
for (sectionIndex = 3; sectionIndex < length + 3; sectionIndex++)
{
if (packetIndex == siPacket.ByteData.Length)
{
if (RunParameters.Instance.TraceIDs.Contains("PIDHANDLER"))
Logger.Instance.Write(getPidID() + "Need more data");
status = handlerStatus.awaitingMoreData;
return (false);
}
mpeg2Section.Data[sectionIndex] = siPacket.ByteData[packetIndex];
packetIndex++;
}
if (RunParameters.Instance.TraceIDs.Contains("PIDHANDLER"))
Logger.Instance.Write(getPidID() + "Got table");
if ((mpeg2Section.Data[1] & 0x80) != 0)
{
bool checkCRC = mpeg2Section.CheckCRC();
if (!checkCRC)
{
Logger.Instance.Write(getPidID() + "CRC failed");
return (true);
}
}
sections.Add(mpeg2Section);
if (RunParameters.Instance.TraceIDs.Contains("PIDHANDLER"))
Logger.Instance.Dump(getPidID() + "MPEG2 Section", mpeg2Section.Data, mpeg2Section.Data.Length);
return (true);
}
private void processDataSection(Mpeg2Section section)
{
Mpeg2ExtendedHeader mpeg2Header = new Mpeg2ExtendedHeader();
try
{
mpeg2Header.Process(section.Data);
if (mpeg2Header.Current)
{
DSMCCSection dsmccSection = new DSMCCSection();
dsmccSection.Process(section.Data, mpeg2Header);
if (dsmccSection.DSMCCMessage as DSMCCDownloadDataBlock != null)
addDDBMessage(dsmccSection.DSMCCMessage as DSMCCDownloadDataBlock);
}
}
catch (ArgumentOutOfRangeException e)
{
Logger.Instance.Write("<e> Error processing DSMCC data message: " + e.Message);
}
}
private void getSection(BackgroundParameters parameters)
{
if (siPacket == null)
{
siPacket = getPacket(true);
if (siPacket == null)
{
Thread.Sleep(500);
return;
}
packetIndex = siPacket.DataIndex;
}
if (packetIndex > siPacket.ByteData.Length - 1)
{
siPacket = null;
return;
}
byte table = siPacket.ByteData[packetIndex];
if (table == 0xff)
{
siPacket = null;
return;
}
if (packetIndex == siPacket.ByteData.Length - 1)
{
siPacket = getPacket(false);
if (siPacket == null)
{
Thread.Sleep(500);
return;
}
packetIndex = siPacket.Index;
}
else
packetIndex++;
byte lengthByte1 = siPacket.ByteData[packetIndex];
if (packetIndex == siPacket.ByteData.Length - 1)
{
siPacket = getPacket(false);
if (siPacket == null)
{
Thread.Sleep(500);
return;
}
packetIndex = siPacket.Index;
}
else
packetIndex++;
byte lengthByte2 = siPacket.ByteData[packetIndex];
packetIndex++;
int length = ((lengthByte1 & 0x0f) * 256) + lengthByte2;
if (length < 2)
{
packetIndex += length;
return;
}
if (tables != null && !tables.Contains(table))
{
packetIndex += length;
return;
}
mpeg2Section = new Mpeg2Section();
mpeg2Section.Data = new byte[length + 3];
mpeg2Section.Length = length + 3;
mpeg2Section.Data[0] = table;
mpeg2Section.Data[1] = lengthByte1;
mpeg2Section.Data[2] = lengthByte2;
for (int index = 3; index < length + 3; index++)
{
if (packetIndex == siPacket.ByteData.Length)
{
siPacket = getPacket(false);
if (siPacket == null)
{
Thread.Sleep(500);
return;
}
packetIndex = siPacket.Index;
}
mpeg2Section.Data[index] = siPacket.ByteData[packetIndex];
packetIndex++;
}
if ((mpeg2Section.Data[1] & 0x80) == 1)
{
bool checkCRC = mpeg2Section.CheckCRC();
if (!checkCRC)
return;
}
Lock("GetSection");
if (Sections.Count < parameters.MaxSections)
Sections.Add(mpeg2Section);
Release("GetSection");
}
private void processControlSection(Mpeg2Section section)
{
Mpeg2ExtendedHeader mpeg2Header = new Mpeg2ExtendedHeader();
try
{
mpeg2Header.Process(section.Data);
if (mpeg2Header.Current)
{
DSMCCSection dsmccSection = new DSMCCSection();
dsmccSection.Process(section.Data, mpeg2Header);
if (dsmccSection.DSMCCMessage as DSMCCDownloadServerInitiate != null)
addDSIMessage(dsmccSection.DSMCCMessage as DSMCCDownloadServerInitiate);
else
{
if (dsmccSection.DSMCCMessage as DSMCCDownloadInfoIndication != null)
addDIIMessage(dsmccSection.DSMCCMessage as DSMCCDownloadInfoIndication);
else
{
if (dsmccSection.DSMCCMessage as DSMCCDownloadCancel != null)
{
Logger.Instance.Write("DSMCC Cancel message received: reloading all data");
dsiMessage = null;
diiMessages = null;
modules = null;
}
}
}
}
}
catch (ArgumentOutOfRangeException e)
{
Logger.Instance.Write("<e> Error processing DSMCC control message: " + e.Message);
}
}