private void LoadDvbCT(ChannelList list, string path, string mappingName)
{
if (!ReadAndValidateChannellibFile(path, out var data, out var recordSize, out var recordCount))
{
return;
}
var mapping = new DataMapping(this.ini.GetSection(mappingName));
mapping.SetDataPtr(data, chanLstBin.VersionMajor <= 11 ? 20 : 12);
for (int i = 0; i < recordCount; i++, mapping.BaseOffset += recordSize)
{
var progNr = mapping.GetWord("offProgNr");
var offChannelName = mapping.BaseOffset + mapping.GetConst("offName", 0);
var lenName = mapping.GetConst("lenName", 0);
for (int j = 0; j < lenName; j += 2)
{
if (data[offChannelName + j] == 0)
{
lenName = j;
break;
}
}
string channelName = Encoding.Unicode.GetString(data, offChannelName, lenName);
if (chanLstBin.VersionMajor <= 11)
{
var checksum = mapping.GetDword("offChecksum");
mapping.SetDword("offChecksum", 0);
var crc = FaultyCrc32(data, mapping.BaseOffset + mapping.GetConst("offChecksum", 0), recordSize);
if (crc != checksum)
{
throw new FileLoadException($"Invalid CRC in record {i} in {path}");
}
}
var ch = new Channel(list.SignalSource, i, progNr, channelName);
ch.Id = mapping.GetWord("offId"); // only relevant for ChannelMap45
ch.FreqInMhz = (decimal)mapping.GetWord("offFreqTimes16") / 16;
ch.OriginalNetworkId = mapping.GetWord("offOnid");
ch.TransportStreamId = mapping.GetWord("offTsid");
ch.ServiceId = mapping.GetWord("offSid");
ch.SymbolRate = (int)mapping.GetDword("offSymbolRate") / 1000;
ch.Lock = mapping.GetByte("offLocked") != 0;
ch.Favorites = mapping.GetByte("offIsFav") != 0 ? Favorites.A : 0;
if (ch.Favorites != 0)
{
ch.OldFavIndex[0] = ch.OldProgramNr;
}
this.DataRoot.AddChannel(list, ch);
}
}
private ChannelInfo LoadDvbsChannel(ChannelList list, DataMapping mapping, int recordIndex, DvbStringDecoder dvbStringDecoder)
{
var transponderId = mapping.GetWord("offTransponderIndex");
var progNr = mapping.GetWord("offProgNr");
var ch = new ChannelInfo(list.SignalSource, recordIndex, progNr, null);
// deleted channels must be kept in the list because their records must also be physically reordered when saving the list
if (progNr == 0xFFFF || transponderId == 0xFFFF)
{
ch.IsDeleted = true;
ch.OldProgramNr = -1;
return(ch);
}
// onid, tsid, pcrpid and vpid can be 0 in some lists
ch.PcrPid = mapping.GetWord("offPcrPid") & mapping.GetMask("maskPcrPid");
ch.Lock = mapping.GetFlag("Locked");
ch.OriginalNetworkId = mapping.GetWord("OffOnid");
ch.TransportStreamId = mapping.GetWord("offTsid");
ch.ServiceId = mapping.GetWord("offSid");
ch.VideoPid = mapping.GetWord("offVpid") & mapping.GetMask("maskVpid");
ch.Favorites = mapping.GetFlag("IsFav") ? Favorites.A : 0;
ch.OldProgramNr = progNr;
// the 0x1F as the first byte of the channel name is likely the DVB encoding indicator for UTF-8. So we use the DvbStringDecoder here
dvbStringDecoder.GetChannelNames(mapping.Data, mapping.BaseOffset + mapping.GetConst("offName", 0), mapping.GetConst("lenName", 0), out var longName, out var shortName);
ch.Name = longName.TrimEnd('\0');
ch.ShortName = shortName.TrimEnd('\0');
dvbStringDecoder.GetChannelNames(mapping.Data, mapping.BaseOffset + mapping.GetConst("offProvider", 0), mapping.GetConst("lenProvider", 0), out var provider, out _);
ch.Provider = provider.TrimEnd('\0');
// copy values from the satellite/transponder tables to the channel
if (this.DataRoot.Transponder.TryGetValue(transponderId, out var t))
{
ch.Transponder = t;
ch.FreqInMhz = t.FrequencyInMhz;
ch.SymbolRate = t.SymbolRate;
ch.SatPosition = t.Satellite?.OrbitalPosition;
ch.Satellite = t.Satellite?.Name;
if (t.OriginalNetworkId != 0)
{
ch.OriginalNetworkId = t.OriginalNetworkId;
}
if (t.TransportStreamId != 0)
{
ch.TransportStreamId = t.TransportStreamId;
}
}
return(ch);
}