first commit

Core/ZlibUtil.cs

@@ -0,0 +1,55 @@
+using BallanceTASEditor.Core.TASStruct;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace BallanceTASEditor.Core {
+    public class ZlibUtil {
+        private const int COPY_STREAM_UNIT = 1024;
+
+        public static void CompressTAS(LinkedList<FrameData> mem, FileStream file) {
+            file.Write(BitConverter.GetBytes(mem.Count * ConstValue.FRAMEDATA_SIZE), 0, 4);
+
+            var zo = new zlib.ZOutputStream(file, 9);
+            var node = mem.First;
+            while (node != null) {
+                zo.Write(BitConverter.GetBytes(node.Value.deltaTime), 0, 4);
+                zo.Write(BitConverter.GetBytes(node.Value.keystates), 0, 4);
+                node = node.Next;
+            }
+            zo.finish();
+            zo.Close();
+        }
+
+        public static void DecompressTAS(LinkedList<FrameData> ls, FileStream file) {
+            var lengthTemp = new byte[4];
+            var mem = new MemoryStream();
+            file.Read(lengthTemp, 0, 4);
+            Int32 expectedLength = BitConverter.ToInt32(lengthTemp, 0);
+            long expectedCount = expectedLength / ConstValue.FRAMEDATA_SIZE;
+
+            var zo = new zlib.ZOutputStream(mem);
+            CopyStream(file, zo);
+            zo.finish();
+
+            mem.Seek(0, SeekOrigin.Begin);
+            for(long i = 0; i < expectedCount; i++) {
+                ls.AddLast(new FrameData(mem));
+            }
+            mem.Close();
+            zo.Close();
+        }
+
+        public static void CopyStream(Stream origin, Stream target) {
+            var buffer = new byte[COPY_STREAM_UNIT];
+            int len;
+            while ((len = origin.Read(buffer, 0, COPY_STREAM_UNIT)) > 0) {
+                target.Write(buffer, 0, len);
+            }
+            //target.Flush();
+        }
+
+    }
+}