private static string GetSectionLabel(TzxDataBlock tzxBlock)
{
string sectionLabel = null;
switch (tzxBlock.Type)
{
case TzxDataBlockType.StandardSpeedDataBlock:
StandardSpeedDataBlock dataBlock = (StandardSpeedDataBlock)tzxBlock;
sectionLabel = GetSectionLabel(dataBlock.TapeDataBlock);
break;
case TzxDataBlockType.TurboSpeedDataBlock:
dataBlock = (StandardSpeedDataBlock)tzxBlock;
sectionLabel = GetSectionLabel(dataBlock.TapeDataBlock);
sectionLabel += " [turbo speed]";
break;
case TzxDataBlockType.PureDataBlock:
dataBlock = (StandardSpeedDataBlock)tzxBlock;
sectionLabel = GetSectionLabel(dataBlock.TapeDataBlock);
sectionLabel += " [no pilot/sync]";
break;
case TzxDataBlockType.PureTone:
sectionLabel = "Pure tone";
break;
case TzxDataBlockType.PulseSequence:
sectionLabel = "Pulse sequence";
break;
case TzxDataBlockType.DirectRecording:
sectionLabel = "Direct recording";
break;
case TzxDataBlockType.PauseOrStopTheTape:
sectionLabel = "Pause";
break;
case TzxDataBlockType.GroupStart:
GroupStart groupStart = (GroupStart)tzxBlock;
sectionLabel = groupStart.GroupName;
break;
}
return(sectionLabel);
}
private static void ReadGroupStart(BinaryReader fileReader, GroupStart groupStart)
{
groupStart.GroupNameLength = fileReader.ReadByte();
groupStart.GroupName = Encoding.GetEncoding("ISO-8859-1").GetString(fileReader.ReadBytes(groupStart.GroupNameLength));
}
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 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 ReadGroupStart(BinaryReader fileReader, GroupStart groupStart)
{
groupStart.GroupNameLength = fileReader.ReadByte();
groupStart.GroupName = Encoding.GetEncoding("ISO-8859-1").GetString(fileReader.ReadBytes(groupStart.GroupNameLength));
}
