public ZopfliStream(Stream inner, ZopfliFormat type, ZopfliOptions options, bool leaveOpen)
{
_innerStream = inner;
this.type = type;
this.options = options;
this.leaveOpen = leaveOpen;
}
/// <summary>
/// Internal convert method to convert byte array to compressed byte array
/// </summary>
/// <param name="data_in">Uncompressed data array</param>
/// <param name="type">Format type, DEFLATE, GZIP, ZLIB</param>
/// <param name="options">Compression options</param>
/// <returns>Compressed data array</returns>
public static byte[] compress(byte[] data_in, ZopfliFormat type, ZopfliOptions options)
{
IntPtr result = IntPtr.Zero;
UIntPtr result_size = UIntPtr.Zero;
try
{
// Get image data length
UIntPtr data_size = (UIntPtr)data_in.Length;
// Compress the data via native methods
if (Environment.Is64BitProcess)
{
ZopfliCompressor64.ZopfliCompress(ref options, type, data_in, data_in.Length, ref result, ref result_size);
}
else
{
ZopfliCompressor32.ZopfliCompress(ref options, type, data_in, data_in.Length, ref result, ref result_size);
}
// Copy data back to managed memory and return
return(NativeUtilities.GetDataFromUnmanagedMemory(result, (int)result_size));
}
catch
{
throw;
}
finally
{
// Free unmanaged memory
Marshal.FreeHGlobal(result);
}
}
public ZopfliStream(Stream inner, ZopfliFormat type, bool leaveOpen)
{
_innerStream = inner;
this.type = type;
options = new ZopfliOptions();
this.leaveOpen = leaveOpen;
}
public ZopfliStream(Stream inner, ZopfliFormat type, ZopfliOptions options)
{
_innerStream = inner;
this.type = type;
this.options = options;
this.leaveOpen = false;
}
public ZopfliStream(Stream inner, ZopfliFormat type)
{
_innerStream = inner;
this.type = type;
options = new ZopfliOptions();
this.leaveOpen = false;
}
public ZopfliStream(Stream inner)
{
_innerStream = inner;
type = ZopfliFormat.ZOPFLI_FORMAT_DEFLATE;
options = new ZopfliOptions();
this.leaveOpen = false;
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (!leaveOpen)
{
_innerStream.Dispose();
}
options = null;
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
_innerStream.Dispose();
options = null;
}
public ZopfliStream(Stream inner)
{
_innerStream = inner;
type = ZopfliFormat.ZOPFLI_FORMAT_DEFLATE;
options = new ZopfliOptions();
}