protected override void DoDecompress()
{
lock ( iCodeSyncRoot )
{
if (iCode == null)
{
TSymbianCompressionType type = this.CompressionType;
switch (type)
{
default:
case TSymbianCompressionType.ENone:
// NB: This has not yet been observed in reality
DecompressNone();
break;
case TSymbianCompressionType.EDeflate:
case TSymbianCompressionType.EBytePair:
{
using (SymbianDecompressor decompressor = SymbianDecompressor.NewByType(type))
{
//
switch (type)
{
case TSymbianCompressionType.EBytePair:
DecompressBytePair(decompressor);
break;
case TSymbianCompressionType.EDeflate:
DecompressDeflate(decompressor);
break;
}
}
break;
}
}
if (iCode != null)
{
if (iStream != null)
{
iStream.Dispose();
iStream = null;
}
//
iStream = new MemoryStream(iCode);
}
}
}
}
public static SymbianDecompressor NewByType(TSymbianCompressionType aType)
{
SymbianDecompressor ret = null;
//
switch (aType)
{
case TSymbianCompressionType.EBytePair:
ret = new SymbianDecompressorBytePair();
break;
case TSymbianCompressionType.EDeflate:
ret = new SymbianDecompressorInflate();
break;
}
//
return(ret);
}
private static TSymbianCompressionType ReadCompressionType(SymbianStreamReaderLE aReader)
{
TSymbianCompressionType ret = TSymbianCompressionType.ENone;
//
uint type = aReader.ReadUInt32();
if (type == (uint)TSymbianCompressionType.EBytePair)
{
ret = TSymbianCompressionType.EBytePair;
}
else if (type == (uint)TSymbianCompressionType.EDeflate)
{
ret = TSymbianCompressionType.EDeflate;
}
else
{
throw new E32ImageNotSupportedException("Unsupported compression type");
}
//
return(ret);
}
