private static long Decompress(MemoryStream inputStream, MemoryStream output, FormatCompress format)
{
CompressionFormat realFormat = null;
switch (format)
{
case FormatCompress.HUFF:
realFormat = new Huffman(); break;
case FormatCompress.LZ10:
realFormat = new LZ10(); break;
case FormatCompress.LZ11:
realFormat = new LZ11(); break;
case FormatCompress.LZOVL:
realFormat = new LZOvl(); break;
case FormatCompress.RLE:
realFormat = new RLE(); break;
default:
return -1;
}
if (!realFormat.Supports(inputStream, inputStream.Length))
return -1;
try
{
return realFormat.Decompress(inputStream, inputStream.Length, output);
}
catch (TooMuchInputException e)
{
Console.WriteLine(e.Message);
return output.Length;
}
catch (Exception e)
{
Console.WriteLine(String.Format(Main.Get_Traduction("S1D"), format.ToString(), e.Message));
return -1;
}
}
private static int CompressBest(string infile, MemoryStream output, out FormatCompress actualFormat, params FormatCompress[] formats)
{
// only read the input data once from the file.
byte[] inputData;
using (FileStream inStream = File.OpenRead(infile))
{
inputData = new byte[inStream.Length];
inStream.Read(inputData, 0, inputData.Length);
}
MemoryStream bestOutput = null;
int minCompSize = int.MaxValue;
actualFormat = FormatCompress.GBA;
foreach (FormatCompress format in formats)
{
#region compress the file in each format, and save the best one
MemoryStream currentOutput = new MemoryStream();
CompressionFormat realFormat = null;
switch (format)
{
case FormatCompress.HUFF4: Huffman.CompressBlockSize = Huffman.BlockSize.FOURBIT; realFormat = new Huffman(); break;
case FormatCompress.HUFF8: Huffman.CompressBlockSize = Huffman.BlockSize.EIGHTBIT; realFormat = new Huffman(); break;
case FormatCompress.LZ10: realFormat = new LZ10(); break;
case FormatCompress.LZ11: realFormat = new LZ11(); break;
case FormatCompress.LZOVL: realFormat = new LZOvl(); break;
case FormatCompress.RLE: realFormat = new RLE(); break;
}
int currentOutSize;
try
{
using (MemoryStream inStream = new MemoryStream(inputData))
{
currentOutSize = realFormat.Compress(inStream, inStream.Length, currentOutput);
}
}
catch (InputTooLargeException i)
{
Console.WriteLine(i.Message);
actualFormat = format;
return -1;
}
catch (Exception)
{
continue;
}
if (currentOutSize < minCompSize)
{
bestOutput = currentOutput;
minCompSize = currentOutSize;
actualFormat = format;
}
#endregion
}
if (bestOutput == null)
{
Console.WriteLine(Main.Get_Traduction("S1A"));
return -1;
}
bestOutput.WriteTo(output);
return minCompSize;
}
public static FormatCompress Get_Format(string input)
{
CompressionFormat fmt = null;
foreach (FormatCompress f in Enum.GetValues(typeof(FormatCompress)))
{
switch (f)
{
//case FormatCompress.LZOVL: fmt = new LZOvl(); break;
case FormatCompress.LZ10: fmt = new LZ10(); break;
case FormatCompress.LZ11: fmt = new LZ11(); break;
case FormatCompress.RLE: fmt = new RLE(); break;
case FormatCompress.HUFF: fmt = new Huffman(); break;
}
if (fmt == null)
continue;
if (fmt.Supports(input))
return f;
}
return FormatCompress.Invalid;
}
public static FormatCompress Get_Format(FileStream input, bool arm9)
{
CompressionFormat fmt = null;
foreach (FormatCompress f in Enum.GetValues(typeof(FormatCompress)))
{
switch (f)
{
//case FormatCompress.LZOVL: fmt = new LZOvl(); break;
case FormatCompress.LZ10: fmt = new LZ10(); break;
case FormatCompress.LZ11: fmt = new LZ11(); break;
case FormatCompress.RLE: fmt = new RLE(); break;
case FormatCompress.HUFF: fmt = new Huffman(); break;
}
if (fmt == null)
continue;
long fLength = input.Length;
if (arm9)
fLength -= 0xC;
if (fmt.Supports(input, fLength))
return f;
}
return FormatCompress.Invalid;
}
public static int DoCompress(string infile, MemoryStream output, FormatCompress format, out FormatCompress actualFormat)
{
CompressionFormat fmt = null;
switch (format)
{
case FormatCompress.LZ10: fmt = new LZ10(); break;
case FormatCompress.LZ11: fmt = new LZ11(); break;
case FormatCompress.LZOVL: fmt = new LZOvl(); break;
case FormatCompress.RLE: fmt = new RLE(); break;
case FormatCompress.HUFF4: Huffman.CompressBlockSize = Huffman.BlockSize.FOURBIT; fmt = new Huffman(); break;
case FormatCompress.HUFF8: Huffman.CompressBlockSize = Huffman.BlockSize.EIGHTBIT; fmt = new Huffman(); break;
case FormatCompress.HUFF:
return CompressHuff(infile, output, out actualFormat);
case FormatCompress.GBA:
return CompressGBA(infile, output, out actualFormat);
case FormatCompress.NDS:
return CompressNDS(infile, output, out actualFormat);
default:
actualFormat = FormatCompress.Invalid;
return -1;
}
actualFormat = format;
using (FileStream inStream = File.OpenRead(infile))
{
try
{
return fmt.Compress(inStream, inStream.Length, output);
}
catch (Exception s)
{
// any exception generated by compression is a fatal exception
Console.WriteLine(s.Message);
return -1;
}
}
}