using System;
using System.IO;
using ICSharpCode.SharpZipLib.Zip.Compression;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;

namespace Hjg.Pngcs.Zlib
{
	// Token: 0x02000042 RID: 66
	internal class ZlibOutputStreamIs : AZlibOutputStream
	{
		// Token: 0x0600028A RID: 650 RVA: 0x0000A798 File Offset: 0x00008998
		public ZlibOutputStreamIs(Stream st, int compressLevel, EDeflateCompressStrategy strat, bool leaveOpen)
			: base(st, compressLevel, strat, leaveOpen)
		{
			this.deflater = new Deflater(compressLevel);
			this.setStrat(strat);
			this.ost = new DeflaterOutputStream(st, this.deflater);
			this.ost.IsStreamOwner = !leaveOpen;
		}

		// Token: 0x0600028B RID: 651 RVA: 0x0000A7E5 File Offset: 0x000089E5
		public void setStrat(EDeflateCompressStrategy strat)
		{
			if (strat == EDeflateCompressStrategy.Filtered)
			{
				this.deflater.SetStrategy(DeflateStrategy.Filtered);
				return;
			}
			if (strat == EDeflateCompressStrategy.Huffman)
			{
				this.deflater.SetStrategy(DeflateStrategy.HuffmanOnly);
				return;
			}
			this.deflater.SetStrategy(DeflateStrategy.Default);
		}

		// Token: 0x0600028C RID: 652 RVA: 0x0000A814 File Offset: 0x00008A14
		public override void Write(byte[] buffer, int offset, int count)
		{
			this.ost.Write(buffer, offset, count);
		}

		// Token: 0x0600028D RID: 653 RVA: 0x0000A824 File Offset: 0x00008A24
		public override void WriteByte(byte value)
		{
			this.ost.WriteByte(value);
		}

		// Token: 0x0600028E RID: 654 RVA: 0x0000A832 File Offset: 0x00008A32
		public override void Close()
		{
			this.ost.Close();
		}

		// Token: 0x0600028F RID: 655 RVA: 0x0000A83F File Offset: 0x00008A3F
		public override void Flush()
		{
			this.ost.Flush();
		}

		// Token: 0x06000290 RID: 656 RVA: 0x0000A84C File Offset: 0x00008A4C
		public override string getImplementationId()
		{
			return "Zlib deflater: SharpZipLib";
		}

		// Token: 0x04000150 RID: 336
		private DeflaterOutputStream ost;

		// Token: 0x04000151 RID: 337
		private Deflater deflater;
	}
}