Init
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239
Compressor/ImgsProcess.cs
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239
Compressor/ImgsProcess.cs
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//#define NoOutput
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using System;
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using System.Collections.Generic;
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using System.Drawing.Imaging;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Diagnostics;
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using System.Dynamic;
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namespace ImageCompressor
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{
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/// <summary>
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/// 一个单独的线程，来批量压缩图片
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/// </summary>
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class ImgsProcess
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{
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/// <summary>
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/// 这个压缩进程内的所有压缩图片的路径
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/// </summary>
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ImgPaths[] ImgPaths { get; set; }
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/// <summary>
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/// 计数当前线程编号，用于Debug
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/// </summary>
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public int threadIndex=-1;
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/// <summary>
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/// 引用的进度总控
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/// </summary>
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readonly CountProgress progress;
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int currentIndex = 0;
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/// <summary>
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/// 设定是否要在过程中停止计算，标记为停止后，等待计算停止
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/// </summary>
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public bool ToStop { get; set; } = false;
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/// <summary>
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/// 判断是否所有计算已经停止
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/// </summary>
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public bool Stoped { get; private set; } = false;
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/// <summary>
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/// 该线程处理的所有图片数量
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/// </summary>
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public int AllCount { get; private set; }
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public ImgsProcess(int index, List<ImgPaths> imgPaths, CountProgress countProgress)
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{
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threadIndex = index;
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ImgPaths = imgPaths.ToArray();
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AllCount = ImgPaths.Length;
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this.progress = countProgress;
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}
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/// <summary>
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/// 开始时设定所有的压缩参数
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/// </summary>
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/// <param name="compressLevel"></param>
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/// <param name="maxWidth"></param>
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/// <param name="maxHeight"></param>
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public void SetCompressLevel(int compressLevel,int maxWidth, int maxHeight)
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{
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this.compressLevel = compressLevel;
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this.maxWidth = maxWidth;
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this.maxHeight = maxHeight;
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}
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int compressLevel;
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int maxWidth;
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int maxHeight;
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/// <summary>
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/// 用来传递每个Img压缩时候的数据
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/// </summary>
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class DataPack
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{
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public DataPack(ImgPaths paths, JPGCompressor compressor)
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{
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this.compressor = compressor;
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this.imgPaths = paths;
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}
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public JPGCompressor compressor;
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public ImgPaths imgPaths;
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public byte[] readBytes = null;
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public byte[] saveBytes = null;
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}
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#if DEBUG
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double Tick => Math.Round(DateTime.Now.TimeOfDay.TotalSeconds % 1000, 3);
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#endif
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public void Start()
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{
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Stoped = false;
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ToStop = false;
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ResetCountData();
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while (currentIndex < AllCount)
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{
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#if DEBUG
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long t1 = progress.stopwatch.ElapsedMilliseconds;
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#endif
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DataPack dataPack = new DataPack(ImgPaths[currentIndex],new JPGCompressor(compressLevel,maxWidth,maxHeight));
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ReadOneImage(dataPack);
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CompressCurrent(dataPack);
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WriteOneImage(dataPack);
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#if DEBUG
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long t2 = progress.stopwatch.ElapsedMilliseconds;
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#endif
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progress.RWLock.AcquireWriterLock(-1);
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UpdateCountProgress();
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ResetCountData();
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Thread.Sleep(25);
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progress.RWLock.ReleaseWriterLock();
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#if DEBUG
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Debug.WriteLine($"thread {threadIndex} count {currentIndex}, from {t1}, used {t2 - t1}");
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#endif
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currentIndex++;
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if (ToStop)
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{
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Stoped = true;
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return;
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}
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}
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Stoped = true;
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}
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//当前线程运行的结果变量
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int successCount = 0;
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int failedCount = 0;
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List<string> failedPaths = new List<string>();
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int skipCount = 0;
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long preSizeKB = 0;
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long saveSizeKB = 0;
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/// <summary>
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/// 重置当前线程运行的结果变量
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/// </summary>
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void ResetCountData()
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{
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successCount = 0;
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failedCount = 0;
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failedPaths.Clear();
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skipCount = 0;
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preSizeKB = 0;
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saveSizeKB = 0;
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}
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/// <summary>
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/// 读照片到DataPack
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/// </summary>
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/// <param name="dataPack"></param>
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void ReadOneImage(DataPack dataPack)
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{
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ImgPaths imgPaths = dataPack.imgPaths;
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if(!imgPaths.OriginalFileInfo.Exists)
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{
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failedCount++;
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failedPaths.Add(Localize.Get("Read file missing") + imgPaths.OriginalFileInfo.FullName);
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return;
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}
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preSizeKB += imgPaths.OriginalFileInfo.Length / 1024;
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if (FilesManager.IsSkip(imgPaths.OriginalFileInfo))
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{
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skipCount++;
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return;
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}
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dataPack.readBytes = dataPack.compressor.ReadFileToBytes(imgPaths.OriginalFileInfo, out string error);
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if (dataPack.readBytes == null)
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{
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failedCount++;
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failedPaths.Add(error + imgPaths.OriginalFileInfo.FullName);
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}
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}
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/// <summary>
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/// 压缩得到文件的Bytes
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/// </summary>
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/// <param name="dataPack"></param>
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void CompressCurrent(DataPack dataPack)
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{
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if (dataPack.readBytes != null)
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{
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dataPack.saveBytes = dataPack.compressor.CompressBytes(dataPack.readBytes,out string error);
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if(dataPack.saveBytes == null)
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{
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failedCount++;
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failedPaths.Add(error + dataPack.imgPaths.OriginalFileInfo.FullName);
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}
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}
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}
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/// <summary>
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/// 写Bytes到文件
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/// </summary>
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/// <param name="dataPack"></param>
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void WriteOneImage(DataPack dataPack)
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{
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if (dataPack.saveBytes != null)
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{
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bool keepOriginal = dataPack.imgPaths.KeepOriginal;
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FileInfo saveFile = keepOriginal ? dataPack.imgPaths.DuplicatedFileInfo : dataPack.imgPaths.OriginalFileInfo;
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bool re = dataPack.compressor.SaveCompressBytes(dataPack.saveBytes, saveFile, out string error);
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if (re)
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{
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saveSizeKB += dataPack.saveBytes.LongLength / 1024;
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successCount++;
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}
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else
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{
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failedCount++;
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failedPaths.Add(error + dataPack.imgPaths.DuplicatedFileInfo.FullName);
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}
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}
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}
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/// <summary>
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/// 将本线程结果更新到progress的结果
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/// </summary>
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void UpdateCountProgress()
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{
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if (progress.Finished) return;
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progress.SuccessCount += successCount;
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progress.FailedCount+= failedCount;
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progress.SkipCount += skipCount;
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progress.FailedInfos.AddRange(failedPaths);
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progress.PreSizeKBSum+= preSizeKB;
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progress.PostSizeKBSum += saveSizeKB;
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progress.Update();
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}
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}
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}
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