LZMA C# SDK 子线程压缩与解压缩 Unity3d实例

参考雨松的LZMA SDK使用方法：

http://www.xuanyusong.com/archives/3095

转自http://blog.csdn.net/huutu http://www.thisisgame.com.cn

计划在项目中使用 不压缩的Assetbundle ，所以需要对Assetbundle 进行手动压缩打包，因为之前有对 十万个冷笑话的打包分析，所以这次坚定选择 LZMA压缩算法来压缩Assetbundle。

转自http://blog.csdn.net/huutu http://www.thisisgame.com.cn

Note：

因为暂时不知道LZMA如何压缩与解压文件夹，所以目前是计划对文件夹进行UPK打包成UPK文件，然后LZMA压缩。解压的话先解压出来UPK文件，然后读取UPK文件来释放出源文件。

LZMA 官网下载SDK

http://www.7-zip.org/sdk.html

下载过来后直接把C#里面的7zip拖到Unity中，这时Setting.cs 会报错，删除它。

Note：

本文示例中的 LZMA SDK源代码被我修改了。

转自http://blog.csdn.net/huutu http://www.thisisgame.com.cn

代码如下：

using UnityEngine;using System.Collections;using SevenZip;using System.IO;using UnityEditor;using System;using System.Threading;using UnityEngine.UI;public class NewBehaviourScript : MonoBehaviour {[SerializeField]Slider m_Slider;CodeProgress m_CodeProgress=null;//进度;Thread m_CompressThread=null;//压缩线程;Thread m_DecompressThread=null;//解压缩线程;string ApplicationdataPath=string.Empty;private float m_Percent=0f;// Use this for initializationvoid Start () {ApplicationdataPath=Application.dataPath;m_CodeProgress=new CodeProgress(SetProgressPercent);}void Update(){if(m_Percent>0f){m_Slider.value=m_Percent;if(m_Percent==1f){Debug.Log("m_Percent==1f");m_Percent=0f;AssetDatabase.Refresh();}}}void OnGUI(){if(GUI.Button(new Rect(100,100,100,100),"Compress")){m_Slider.value=0f;m_CompressThread=new Thread(new ThreadStart(TestCompress));m_CompressThread.Start();}if(GUI.Button(new Rect(300,100,100,100),"DeCompress")){m_Slider.value=0f;m_DecompressThread=new Thread(new ThreadStart(TestDeCompress));m_DecompressThread.Start();}}void TestCompress(){try{Compress(ApplicationdataPath+"/lib.UPK",ApplicationdataPath+"/lib.ZUPK");}catch(Exception ex){Debug.Log(ex);}}void TestDeCompress(){try{DeCompress(ApplicationdataPath+"/lib.ZUPK",ApplicationdataPath+"/lib1.UPK");}catch(Exception ex){Debug.Log(ex);}}void SetProgressPercent(Int64 fileSize,Int64 processSize){m_Percent=(float)processSize/fileSize;}void Compress(string inpath,string outpath){SevenZip.Compression.LZMA.Encoder encoder=new SevenZip.Compression.LZMA.Encoder();FileStream inputFS=new FileStream(inpath,FileMode.Open);FileStream outputFS=new FileStream(outpath,FileMode.Create);encoder.WriteCoderProperties(outputFS);outputFS.Write(System.BitConverter.GetBytes(inputFS.Length),0,8);encoder.Code(inputFS,outputFS,inputFS.Length,-1,m_CodeProgress);outputFS.Flush();outputFS.Close();inputFS.Close();}void DeCompress(string inpath,string outpath){SevenZip.Compression.LZMA.Decoder decoder=new SevenZip.Compression.LZMA.Decoder();FileStream inputFS=new FileStream(inpath,FileMode.Open);FileStream outputFS=new FileStream(outpath,FileMode.Create);int propertiesSize=SevenZip.Compression.LZMA.Encoder.kPropSize;byte[] properties=new byte[propertiesSize];inputFS.Read(properties,0,properties.Length);byte[] fileLengthBytes=new byte[8];inputFS.Read(fileLengthBytes,0,8);long fileLength=System.BitConverter.ToInt64(fileLengthBytes,0);decoder.SetDecoderProperties(properties);decoder.Code(inputFS,outputFS,inputFS.Length,fileLength,m_CodeProgress);outputFS.Flush();outputFS.Close();inputFS.Close();}}class CodeProgress:ICodeProgress{public delegate void ProgressDelegate(Int64 fileSize,Int64 processSize);public ProgressDelegate m_ProgressDelegate=null;public CodeProgress(ProgressDelegate del){m_ProgressDelegate=del;}public void SetProgress(Int64 inSize, Int64 outSize){}public void SetProgressPercent(Int64 fileSize,Int64 processSize){m_ProgressDelegate(fileSize,processSize);}}

转自http://blog.csdn.net/huutu http://www.thisisgame.com.cn

示例工程下载：

百度网盘

链接: http://pan.baidu.com/s/1jGlEDPO 密码: wure

CSDN下载

关于UPK打包

Unity3d 游戏资源打包加密(图片/XML/TXT等) C#编码 (一)