public override void Close()
{
// Data has changed.
if (!RecompressJustWhenModified || !UncompressedOriginalData.SequenceEqual(((MemoryStream)this.ParentStream).ToArray()))
{
int Version = RecompressVersion;
if (Version == -1)
{
Version = TalesCompression.DetectVersion(this.CompressedStream.Slice());
}
var Compression = TalesCompression.CreateFromVersion(Version);
var RecompressedData = Compression.EncodeFile(ParentStream).ToArray();
if (RecompressedData.Length > this.CompressedStream.Length)
{
throw (new Exception(String.Format("Compressed file is bigger than original Updated: {0} > Previous: {1}", RecompressedData.Length, CompressedStream.Length)));
}
var CompressedStream2 = this.CompressedStream.Slice();
CompressedStream2
.WriteBytes(RecompressedData)
.WriteByteRepeatedTo((byte)0x00, CompressedStream2.Length);
;
}
else
{
//Console.WriteLine("Unchanged!");
}
base.Close();
}
public DecompressRecompressStream(Stream CompressedStream, int RecompressVersion = -1, bool RecompressJustWhenModified = true)
: base(TalesCompression.DecompressStream(CompressedStream.Slice()))
{
this.CompressedStream = CompressedStream;
this.RecompressVersion = RecompressVersion;
this.RecompressJustWhenModified = RecompressJustWhenModified;
UncompressedOriginalData = ((MemoryStream)this.ParentStream).ToArray();
}
static public void CreateCompression15File(String FileName, Stream OutputStream, int FallbackCompression = 15)
{
/*
* if (pState->block_type == LZX_BLOCKTYPE_UNCOMPRESSED)
* {
* if (pState->block_length & 1) inpos++; // realign bitstream to word
* INIT_BITSTREAM;
* }
*/
//throw (new NotImplementedException("Can't compress using LZX. Please use compressión 03 instead."));
Stream LZXStream;
try
{
LZXStream = CompressToLZXStream(FileName, FallbackCompression);
}
catch (InvalidDataException)
{
if (FallbackCompression == 15)
{
LZXStream = CompressToLZXStreamRAW(FileName);
}
else
{
OutputStream.WriteBytes(TalesCompression.CreateFromVersion(FallbackCompression).EncodeBytes(File.ReadAllBytes(FileName)));
return;
}
}
uint UncompressedSize = (uint)(new FileInfo(FileName)).Length;
uint CompressedSize = (uint)LZXStream.Length;
var HeaderStruct = new TalesCompression15_Lzx.HeaderStruct()
{
Magic = TalesCompression15_Lzx.Signature,
Magic1 = 0x20000,
Magic2 = 0x80000,
Magic3 = 0x00000,
Magic4 = 0x00000,
UncompressedSize = UncompressedSize,
UncompressedSize2 = UncompressedSize,
CompressedSize = CompressedSize,
CompressedSize2 = CompressedSize,
CompressedSizePlus4 = CompressedSize + 4,
};
OutputStream.WriteStruct(HeaderStruct);
LZXStream.CopyTo(OutputStream);
OutputStream.Flush();
//Console.WriteLine(OutputStream.Position);
//Console.WriteLine(0x34 + CompressedSize);
if (OutputStream.Position != 0x34 + CompressedSize)
{
throw (new Exception("(OutputStream.Position != 0x34 + CompressedSize)"));
}
}
