/// <summary>Initializes a new instance of the GZipStream class using the specified stream and BZip2CompressionMode value.</summary>
/// <param name="stream">The stream to compress or decompress.</param>
/// <param name="mode">One of the BZip2CompressionMode values that indicates the action to take.</param>
/// <param name="options">The Gzip Options</param>ll
public unsafe GZipStream(Stream stream, CompressionMode mode, GZipOptions options)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
_stream = stream;
_mode = mode;
_zstream.zalloc = null;
_zstream.zfree = null;
_zstream.opaque = null;
_tmpBuffer = new byte[BufferSize];
_tmpBufferHandle = GCHandle.Alloc(_tmpBuffer, GCHandleType.Pinned);
_tmpBufferPtr = _tmpBufferHandle.AddrOfPinnedObject().ToPointer();
ZLibReturnCode ret;
switch (mode)
{
case CompressionMode.Compress:
ret = ZLibNative.deflateInit2_(ref _zstream,
options.Level, options.Method, options.WindowBits,
options.MemoryLevel, (int)options.Strategy,
ZLibVersion, Marshal.SizeOf(typeof(ZStream)));
if (ret != ZLibReturnCode.Ok)
{
throw new ArgumentException("Unable to init ZLib. Return code: " + ret);
}
_zstream.next_out = (byte *)_tmpBufferPtr;
_zstream.avail_out = (uint)_tmpBuffer.Length;
break;
case CompressionMode.Decompress:
ret = ZLibNative.inflateInit2_(ref _zstream, options.WindowBits, ZLibVersion, Marshal.SizeOf(typeof(ZStream)));
if (ret != ZLibReturnCode.Ok)
{
throw new ArgumentException("Unable to init ZLib. Return code: " + ret);
}
break;
}
}
/// <summary>Initializes a new instance of the GZipStream class using the specified stream and BZip2CompressionMode value.</summary>
/// <param name="stream">The stream to compress or decompress.</param>
/// <param name="mode">One of the BZip2CompressionMode values that indicates the action to take.</param>
/// <param name="options">The Gzip Options</param>ll
public unsafe GZipStream(Stream stream, CompressionMode mode, GZipOptions options)
{
if (stream == null)
throw new ArgumentNullException("stream");
_stream = stream;
_mode = mode;
_zstream.zalloc = null;
_zstream.zfree = null;
_zstream.opaque = null;
_tmpBuffer = new byte[BufferSize];
_tmpBufferHandle = GCHandle.Alloc(_tmpBuffer, GCHandleType.Pinned);
_tmpBufferPtr = _tmpBufferHandle.AddrOfPinnedObject().ToPointer();
ZLibReturnCode ret;
switch (mode)
{
case CompressionMode.Compress:
ret = ZLibNative.deflateInit2_(ref _zstream,
options.Level, options.Method, options.WindowBits,
options.MemoryLevel, (int) options.Strategy,
ZLibVersion, Marshal.SizeOf(typeof(ZStream)));
if (ret != ZLibReturnCode.Ok)
throw new ArgumentException("Unable to init ZLib. Return code: " + ret);
_zstream.next_out = (byte*) _tmpBufferPtr;
_zstream.avail_out = (uint) _tmpBuffer.Length;
break;
case CompressionMode.Decompress:
ret = ZLibNative.inflateInit2_(ref _zstream, options.WindowBits, ZLibVersion, Marshal.SizeOf(typeof(ZStream)));
if (ret != ZLibReturnCode.Ok)
throw new ArgumentException("Unable to init ZLib. Return code: " + ret);
break;
}
}
