private static TzxDataBlock ReadTzxDataBlock(BinaryReader fileReader)
{
TzxDataBlock resultDataBlock = null;
byte id = fileReader.ReadByte();
TzxDataBlockType dataBlockType = TzxDataBlock.GetTZXDataBlockTypeFromID(id);
switch (dataBlockType)
{
// ID 10 - Standard Speed Data Block
case TzxDataBlockType.StandardSpeedDataBlock:
resultDataBlock = new StandardSpeedDataBlock();
ReadStandardSpeedDataBlock(fileReader, (StandardSpeedDataBlock)resultDataBlock);
break;
// ID 11 - Turbo Speed Data Block
case TzxDataBlockType.TurboSpeedDataBlock:
resultDataBlock = new TurboSpeedDataBlock();
ReadTurboSpeedDataBlock(fileReader, (TurboSpeedDataBlock)resultDataBlock);
break;
// ID 12 - Pure Tone
case TzxDataBlockType.PureTone:
resultDataBlock = new PureTone();
ReadPureTone(fileReader, (PureTone)resultDataBlock);
break;
// ID 13 - Pulse sequence
case TzxDataBlockType.PulseSequence:
resultDataBlock = new PulseSequence();
ReadPulseSequence(fileReader, (PulseSequence)resultDataBlock);
break;
// ID 14 - Pure Data Block
case TzxDataBlockType.PureDataBlock:
resultDataBlock = new PureDataBlock();
ReadPureDataBlock(fileReader, (PureDataBlock)resultDataBlock);
break;
// ID 15 - Direct Recording
case TzxDataBlockType.DirectRecording:
resultDataBlock = new DirectRecording();
ReadDirectRecording(fileReader, (DirectRecording)resultDataBlock);
break;
// ID 20 - Pause (silence) or 'Stop the Tape' command
case TzxDataBlockType.PauseOrStopTheTape:
resultDataBlock = new PauseOrStopTheTape();
ReadPauseOrStopTheTape(fileReader, (PauseOrStopTheTape)resultDataBlock);
break;
// ID 21 - Group start
case TzxDataBlockType.GroupStart:
resultDataBlock = new GroupStart();
ReadGroupStart(fileReader, (GroupStart)resultDataBlock);
break;
// ID 22 - Group end
case TzxDataBlockType.GroupEnd:
resultDataBlock = new GroupEnd();
break;
// ID 30 - Text description
case TzxDataBlockType.TextDescription:
resultDataBlock = new TextDescription();
ReadTextDescription(fileReader, (TextDescription)resultDataBlock);
break;
// ID 32 - Archive info
case TzxDataBlockType.ArchiveInfo:
resultDataBlock = new ArchiveInfo();
ReadArchiveInfo(fileReader, (ArchiveInfo)resultDataBlock);
break;
default:
throw new NotImplementedException("TZX data block ID "+ id.ToString("X") + " is not yet implemented");
}
return resultDataBlock;
}
private static void ReadTextDescription(BinaryReader fileReader, TextDescription textDescription)
{
textDescription.Length = fileReader.ReadByte();
textDescription.Text = Encoding.GetEncoding("ISO-8859-1").GetString(fileReader.ReadBytes(textDescription.Length));
}