/// <summary>
/// Old Decompress method not using .NET compressor
/// </summary>
/// <param name="Data"></param>
/// <returns></returns>
public byte[] DecompressOld(byte[] Data)
{
byte[] decompressedPixelData = new byte[UncompressedLength];
// ZLIB
if (version > BgfFile.VERSION9)
{
// init streams
MemoryStream destStream = new MemoryStream(decompressedPixelData, true);
ZOutputStream destZ = new ZOutputStream(destStream);
// decompress
destZ.Write(Data, 0, Data.Length);
destZ.Flush();
destZ.finish();
// cleanup
destStream.Dispose();
destZ.Dispose();
}
// CRUSH
else
{
#if WINCLR && X86
// decompress
Crush32.Decompress(Data, 0, decompressedPixelData, 0, (int)UncompressedLength, CompressedLength);
#else
throw new Exception(ERRORCRUSHPLATFORM);
#endif
}
// set decompressed array to pixeldata
return decompressedPixelData;
}
/// <summary>
/// Returns a compressed byte[] of PixelData argument
/// </summary>
/// <param name="Data"></param>
/// <returns></returns>
public byte[] Compress(byte[] Data)
{
// allocate a buffer with uncompressed length to write compressed stream to
byte[] tempBuffer = new byte[UncompressedLength];
int compressedLength;
// ZLIB
if (version > BgfFile.VERSION9)
{
// init streams
MemoryStream destStream = new MemoryStream(tempBuffer, true);
ZOutputStream destZ = new ZOutputStream(destStream, zlibConst.Z_BEST_COMPRESSION);
// compress
destZ.Write(Data, 0, Data.Length);
destZ.Flush();
destZ.finish();
// update compressed length
compressedLength = (int)destZ.TotalOut;
// cleanup
destStream.Dispose();
destZ.Dispose();
}
// CRUSH
else
{
#if WINCLR && X86
// compress to tempBuffer
compressedLength = Crush32.Compress(Data, 0, tempBuffer, 0, (int)UncompressedLength);
#else
throw new Exception(ERRORCRUSHPLATFORM);
#endif
}
// copy all bytes we actually used from tempBuffer to new PixelData
byte[] newPixelData = new byte[compressedLength];
Array.Copy(tempBuffer, 0, newPixelData, 0, compressedLength);
return newPixelData;
}