public static TzxFile ReadTzxFile(Stream inputStream, string fileName)
{
TzxFile resultFile = new TzxFile(fileName);
using (BinaryReader fileReader = new BinaryReader(inputStream, Encoding.GetEncoding("ISO-8859-1")))
{
string signature = Encoding.GetEncoding("ISO-8859-1").GetString(fileReader.ReadBytes(7));
if (signature != "ZXTape!")
{
throw new InvalidDataException("The signature of the file does not match the standard TZX file format");
}
else
{
resultFile.Signature = signature;
}
resultFile.EndOfTextFileMarker = fileReader.ReadByte();
resultFile.MajorRevisionNumber = fileReader.ReadByte();
resultFile.MinorRevisionNumber = fileReader.ReadByte();
TapeSection currentGroupSection = null;
while (fileReader.PeekChar() >= 0)
{
TzxDataBlock tzxBlock = ReadTzxDataBlock(fileReader);
resultFile.DataBlocks.Add(tzxBlock);
switch (tzxBlock.Type)
{
case TzxDataBlockType.StandardSpeedDataBlock:
case TzxDataBlockType.TurboSpeedDataBlock:
case TzxDataBlockType.PureTone:
case TzxDataBlockType.PulseSequence:
case TzxDataBlockType.PureDataBlock:
case TzxDataBlockType.DirectRecording:
TapeSection section = new TapeSection(tzxBlock);
if (currentGroupSection == null)
{
resultFile.Sections.Add(section);
}
else
{
foreach (TapeSoundSequence soundSequence in section.SoundSequences)
{
currentGroupSection.SoundSequences.Add(soundSequence);
}
}
break;
case TzxDataBlockType.PauseOrStopTheTape:
PauseOrStopTheTape pauseBlock = (PauseOrStopTheTape)tzxBlock;
if (pauseBlock.PauseInMs > 0)
{
section = new TapeSection(tzxBlock);
if (currentGroupSection == null)
{
resultFile.Sections.Add(section);
}
else
{
foreach (TapeSoundSequence soundSequence in section.SoundSequences)
{
currentGroupSection.SoundSequences.Add(soundSequence);
}
}
}
break;
case TzxDataBlockType.TextDescription:
TextDescription descriptionBlock = (TextDescription)tzxBlock;
resultFile.Description += descriptionBlock.Text;
break;
case TzxDataBlockType.ArchiveInfo:
ArchiveInfo archiveInfo = (ArchiveInfo)tzxBlock;
resultFile.Description += archiveInfo.ToString();
break;
case TzxDataBlockType.GroupStart:
currentGroupSection = new TapeSection(tzxBlock);
break;
case TzxDataBlockType.GroupEnd:
foreach (TapeSoundSequence soundSequence in currentGroupSection.SoundSequences)
{
currentGroupSection.Duration += soundSequence.Duration;
}
resultFile.Sections.Add(currentGroupSection);
currentGroupSection = null;
break;
}
}
}
TapeSection lastSection = resultFile.Sections[resultFile.Sections.Count - 1];
TapeSoundSequence lastSoundSequence = lastSection.SoundSequences[lastSection.SoundSequences.Count - 1];
if (lastSoundSequence.GetType() != typeof(PauseSequence))
{
lastSection.SoundSequences.Add(new PauseSequence("End of tape", 1));
}
foreach (TapeSection section in resultFile.Sections)
{
resultFile.Duration += section.Duration;
}
return(resultFile);
}
public static TzxFile ReadTzxFile(Stream inputStream, string fileName)
{
TzxFile resultFile = new TzxFile(fileName);
using (BinaryReader fileReader = new BinaryReader(inputStream, Encoding.GetEncoding("ISO-8859-1")))
{
string signature = Encoding.GetEncoding("ISO-8859-1").GetString(fileReader.ReadBytes(7));
if (signature != "ZXTape!")
{
throw new InvalidDataException("The signature of the file does not match the standard TZX file format");
}
else
{
resultFile.Signature = signature;
}
resultFile.EndOfTextFileMarker = fileReader.ReadByte();
resultFile.MajorRevisionNumber = fileReader.ReadByte();
resultFile.MinorRevisionNumber = fileReader.ReadByte();
TapeSection currentGroupSection = null;
while (fileReader.PeekChar() >= 0)
{
TzxDataBlock tzxBlock = ReadTzxDataBlock(fileReader);
resultFile.DataBlocks.Add(tzxBlock);
switch(tzxBlock.Type)
{
case TzxDataBlockType.StandardSpeedDataBlock:
case TzxDataBlockType.TurboSpeedDataBlock:
case TzxDataBlockType.PureTone:
case TzxDataBlockType.PulseSequence:
case TzxDataBlockType.PureDataBlock:
case TzxDataBlockType.DirectRecording:
TapeSection section = new TapeSection(tzxBlock);
if (currentGroupSection == null)
{
resultFile.Sections.Add(section);
}
else
{
foreach (TapeSoundSequence soundSequence in section.SoundSequences)
{
currentGroupSection.SoundSequences.Add(soundSequence);
}
}
break;
case TzxDataBlockType.PauseOrStopTheTape:
PauseOrStopTheTape pauseBlock = (PauseOrStopTheTape)tzxBlock;
if (pauseBlock.PauseInMs > 0)
{
section = new TapeSection(tzxBlock);
if (currentGroupSection == null)
{
resultFile.Sections.Add(section);
}
else
{
foreach (TapeSoundSequence soundSequence in section.SoundSequences)
{
currentGroupSection.SoundSequences.Add(soundSequence);
}
}
}
break;
case TzxDataBlockType.TextDescription:
TextDescription descriptionBlock = (TextDescription)tzxBlock;
resultFile.Description += descriptionBlock.Text;
break;
case TzxDataBlockType.ArchiveInfo:
ArchiveInfo archiveInfo = (ArchiveInfo)tzxBlock;
resultFile.Description += archiveInfo.ToString();
break;
case TzxDataBlockType.GroupStart:
currentGroupSection = new TapeSection(tzxBlock);
break;
case TzxDataBlockType.GroupEnd:
foreach (TapeSoundSequence soundSequence in currentGroupSection.SoundSequences)
{
currentGroupSection.Duration += soundSequence.Duration;
}
resultFile.Sections.Add(currentGroupSection);
currentGroupSection = null;
break;
}
}
}
TapeSection lastSection = resultFile.Sections[resultFile.Sections.Count-1];
TapeSoundSequence lastSoundSequence = lastSection.SoundSequences[lastSection.SoundSequences.Count - 1];
if(lastSoundSequence.GetType() != typeof(PauseSequence))
{
lastSection.SoundSequences.Add(new PauseSequence("End of tape", 1));
}
foreach (TapeSection section in resultFile.Sections)
{
resultFile.Duration += section.Duration;
}
return resultFile;
}