zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/zlib/zlib-1.2.11/contrib/dotzlib/DotZLib/Deflater.cs b/ap/lib/zlib/zlib-1.2.11/contrib/dotzlib/DotZLib/Deflater.cs
new file mode 100644
index 0000000..c247792
--- /dev/null
+++ b/ap/lib/zlib/zlib-1.2.11/contrib/dotzlib/DotZLib/Deflater.cs
@@ -0,0 +1,106 @@
+//
+// © Copyright Henrik Ravn 2004
+//
+// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+
+namespace DotZLib
+{
+
+ /// <summary>
+ /// Implements a data compressor, using the deflate algorithm in the ZLib dll
+ /// </summary>
+ public sealed class Deflater : CodecBase
+ {
+ #region Dll imports
+ [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
+ private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);
+
+ [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+ private static extern int deflate(ref ZStream sz, int flush);
+
+ [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+ private static extern int deflateReset(ref ZStream sz);
+
+ [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
+ private static extern int deflateEnd(ref ZStream sz);
+ #endregion
+
+ /// <summary>
+ /// Constructs an new instance of the <c>Deflater</c>
+ /// </summary>
+ /// <param name="level">The compression level to use for this <c>Deflater</c></param>
+ public Deflater(CompressLevel level) : base()
+ {
+ int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));
+ if (retval != 0)
+ throw new ZLibException(retval, "Could not initialize deflater");
+
+ resetOutput();
+ }
+
+ /// <summary>
+ /// Adds more data to the codec to be processed.
+ /// </summary>
+ /// <param name="data">Byte array containing the data to be added to the codec</param>
+ /// <param name="offset">The index of the first byte to add from <c>data</c></param>
+ /// <param name="count">The number of bytes to add</param>
+ /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
+ public override void Add(byte[] data, int offset, int count)
+ {
+ if (data == null) throw new ArgumentNullException();
+ if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
+ if ((offset+count) > data.Length) throw new ArgumentException();
+
+ int total = count;
+ int inputIndex = offset;
+ int err = 0;
+
+ while (err >= 0 && inputIndex < total)
+ {
+ copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
+ while (err >= 0 && _ztream.avail_in > 0)
+ {
+ err = deflate(ref _ztream, (int)FlushTypes.None);
+ if (err == 0)
+ while (_ztream.avail_out == 0)
+ {
+ OnDataAvailable();
+ err = deflate(ref _ztream, (int)FlushTypes.None);
+ }
+ inputIndex += (int)_ztream.total_in;
+ }
+ }
+ setChecksum( _ztream.adler );
+ }
+
+
+ /// <summary>
+ /// Finishes up any pending data that needs to be processed and handled.
+ /// </summary>
+ public override void Finish()
+ {
+ int err;
+ do
+ {
+ err = deflate(ref _ztream, (int)FlushTypes.Finish);
+ OnDataAvailable();
+ }
+ while (err == 0);
+ setChecksum( _ztream.adler );
+ deflateReset(ref _ztream);
+ resetOutput();
+ }
+
+ /// <summary>
+ /// Closes the internal zlib deflate stream
+ /// </summary>
+ protected override void CleanUp() { deflateEnd(ref _ztream); }
+
+ }
+}