private void LoadRun(CompressedRun run)
{
int toCopy = (int)(run.SectorCount * Sizes.Sector);
switch (run.Type)
{
case RunType.ZlibCompressed:
_stream.Position = run.CompOffset + 2; // 2 byte zlib header
using (DeflateStream ds = new DeflateStream(_stream, CompressionMode.Decompress, true))
{
Utilities.ReadFully(ds, _decompBuffer, 0, toCopy);
}
break;
case RunType.AdcCompressed:
_stream.Position = run.CompOffset;
byte[] compressed = Utilities.ReadFully(_stream, (int)run.CompLength);
if (ADCDecompress(compressed, 0, compressed.Length, _decompBuffer, 0) != toCopy)
{
throw new InvalidDataException("Run too short when decompressed");
}
break;
case RunType.BZlibCompressed:
using (BZip2DecoderStream ds = new BZip2DecoderStream(new SubStream(_stream, run.CompOffset, run.CompLength), Ownership.None))
{
Utilities.ReadFully(ds, _decompBuffer, 0, toCopy);
}
break;
case RunType.Zeros:
case RunType.Raw:
break;
default:
throw new NotImplementedException("Unrecognized run type " + run.Type);
}
_activeRun = run;
}
private void LoadRun(CompressedRun run)
{
int toCopy = (int)(run.SectorCount * Sizes.Sector);
switch (run.Type)
{
case RunType.ZlibCompressed:
_stream.Position = run.CompOffset + 2; // 2 byte zlib header
using (DeflateStream ds = new DeflateStream(_stream, CompressionMode.Decompress, true))
{
Utilities.ReadFully(ds, _decompBuffer, 0, toCopy);
}
break;
case RunType.AdcCompressed:
_stream.Position = run.CompOffset;
byte[] compressed = Utilities.ReadFully(_stream, (int)run.CompLength);
if (ADCDecompress(compressed, 0, compressed.Length, _decompBuffer, 0) != toCopy)
{
throw new InvalidDataException("Run too short when decompressed");
}
break;
case RunType.BZlibCompressed:
using (BZip2DecoderStream ds = new BZip2DecoderStream(new SubStream(_stream, run.CompOffset, run.CompLength), Ownership.None))
{
Utilities.ReadFully(ds, _decompBuffer, 0, toCopy);
}
break;
case RunType.Zeros:
case RunType.Raw:
break;
default:
throw new NotImplementedException("Unrecognized run type " + run.Type);
}
_activeRun = run;
}