531 lines
33 KiB
C#
531 lines
33 KiB
C#
using FFMpegCore;
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using FFMpegCore.Enums;
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using Microsoft.Expression.Drawing.Core;
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using System.IO;
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using System.Threading;
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using System.Windows;
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using System.Windows.Forms;
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using System.Windows.Input;
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using System.Windows.Threading;
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using VideoConcat.Common.Tools;
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using VideoConcat.Models;
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using VideoConcat.Services.Video;
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using static VideoConcat.Models.VideoModel;
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using MessageBox = System.Windows.MessageBox;
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namespace VideoConcat.ViewModels
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{
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public class ExtractWindowViewModel
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{
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private ExtractWindowModel _extractWindowModel;
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public List<ConcatVideo> ConcatVideos { get; set; } = [];
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public ExtractWindowModel ExtractWindowModel
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{
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get { return _extractWindowModel; }
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set
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{
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_extractWindowModel = value;
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}
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}
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public ExtractWindowViewModel()
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{
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ExtractWindowModel = new ExtractWindowModel
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{
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CanExtractFrame = false,
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CanModify = false,
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IsStart = false,
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IsCanOperate = true,
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BtnOpenFolderCommand = new Command()
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{
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DoExcue = obj =>
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{
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System.Windows.Forms.FolderBrowserDialog folderBrowserDialog = new();
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if (folderBrowserDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
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{
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ExtractWindowModel.FolderPath = folderBrowserDialog.SelectedPath;
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LogUtils.Info($"获取视频文件夹,视频路径:{ExtractWindowModel.FolderPath}");
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ListFolder();
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}
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}
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},
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BtnStartVideoConcatCommand = new Command()
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{
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DoExcue = obj =>
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{
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// 在后台任务中执行异步操作
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Task.Run(async () =>
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{
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int extractCount = ExtractWindowModel.ExtractCount;
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if (extractCount <= 0)
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{
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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MessageBox.Show("请输入有效的生成个数（大于0）！", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
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});
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return;
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}
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string modeText = ExtractWindowModel.ExtractFrameMode == Models.ExtractFrameMode.DeleteFrame ? "方案1" : "方案2";
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DateTime startTime = DateTime.Now;
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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ExtractWindowModel.HelpInfo = $"处理方案：{modeText} | 视频数量：{ExtractWindowModel.videos.Length} 个 | 每个生成：{extractCount} 个 | 总任务数：{ExtractWindowModel.videos.Length * extractCount} 个 | 开始时间：{startTime:yyyy-MM-dd HH:mm:ss}";
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// 清空任务列表，以便重新开始
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ExtractWindowModel.TaskItems.Clear();
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ExtractWindowModel.IsStart = true;
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ExtractWindowModel.IsCanOperate = false;
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});
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SemaphoreSlim semaphore = new(10); // 限制并发数量
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List<Task> _tasks = [];
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int totalTasks = ExtractWindowModel.videos.Length * extractCount;
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int completedTasks = 0;
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System.Collections.Concurrent.ConcurrentBag<string> errorMessages = new(); // 收集错误信息
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System.Collections.Concurrent.ConcurrentBag<string> successMessages = new(); // 收集成功信息
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long totalOriginalSize = 0; // 原始文件总大小
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long totalOutputSize = 0; // 输出文件总大小
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int successCount = 0; // 成功数量
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int skipCount = 0; // 跳过数量（已存在）
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// 对每个视频生成指定数量的抽帧视频
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foreach (var video in ExtractWindowModel.videos)
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{
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for (int i = 1; i <= extractCount; i++)
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{
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int currentIndex = i; // 闭包变量
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string currentVideo = video; // 闭包变量
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await semaphore.WaitAsync();
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var _task = Task.Run(async () =>
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{
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try
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{
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string _tmpPath = Path.GetDirectoryName(currentVideo) ?? "";
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if (string.IsNullOrEmpty(_tmpPath))
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{
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LogUtils.Error($"无法获取视频目录：{currentVideo}");
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Interlocked.Increment(ref completedTasks);
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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ExtractWindowModel.HelpInfo = $"处理中... ({completedTasks}/{totalTasks})";
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});
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return;
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}
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string originalFileName = Path.GetFileNameWithoutExtension(currentVideo);
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string extension = Path.GetExtension(currentVideo);
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// 生成唯一的文件名：原始名称+方案号+生成日期+序号
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string modeSuffix = ExtractWindowModel.ExtractFrameMode == Models.ExtractFrameMode.DeleteFrame ? "1" : "2";
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string dateStr = DateTime.Now.ToString("MMdd");
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string _tmpFileName = $"{originalFileName}_{dateStr}{modeSuffix}{currentIndex:D4}{extension}";
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string outPath = Path.Combine(_tmpPath, "out");
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LogUtils.Info($"准备创建输出目录：{outPath}");
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try
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{
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if (!Directory.Exists(outPath))
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{
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Directory.CreateDirectory(outPath);
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LogUtils.Info($"已创建输出目录：{outPath}");
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}
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}
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catch (Exception ex)
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{
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LogUtils.Error($"创建输出目录失败：{outPath}", ex);
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Interlocked.Increment(ref completedTasks);
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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ExtractWindowModel.HelpInfo = $"处理中... ({completedTasks}/{totalTasks})";
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});
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return;
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}
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string outputPath = Path.Combine(outPath, _tmpFileName);
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LogUtils.Info($"开始抽帧：输入={currentVideo}, 输出={outputPath}");
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// 定义显示用的变量（提前定义，避免作用域问题）
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// 显示完整的文件名，让DataGrid的列宽和ToolTip来处理显示
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string displayFileName = originalFileName;
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int currentCompleted;
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double progressPercent;
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// 获取原始文件大小
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long originalSize = 0;
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if (File.Exists(currentVideo))
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{
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FileInfo originalFileInfo = new FileInfo(currentVideo);
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originalSize = originalFileInfo.Length;
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Interlocked.Add(ref totalOriginalSize, originalSize);
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}
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// 如果文件已存在，跳过（不覆盖）
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if (File.Exists(outputPath))
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{
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LogUtils.Info($"文件已存在，跳过：{outputPath}");
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Interlocked.Increment(ref skipCount);
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Interlocked.Increment(ref completedTasks);
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currentCompleted = completedTasks;
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progressPercent = currentCompleted * 100.0 / totalTasks;
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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var taskItem = new Models.ExtractTaskItem
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{
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Index = currentIndex.ToString(),
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FileName = displayFileName,
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FullFileName = _tmpFileName,
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Status = "跳过",
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OriginalSize = "--",
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OutputSize = "--",
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SizeChange = "--",
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Duration = "--",
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Progress = $"{progressPercent:F1}%"
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};
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ExtractWindowModel.TaskItems.Add(taskItem);
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});
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return;
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}
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// 先检查视频时长和获取视频信息
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IMediaAnalysis? mediaInfo = null;
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double totalDuration = 0;
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try
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{
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mediaInfo = await FFProbe.AnalyseAsync(currentVideo);
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totalDuration = mediaInfo.Duration.TotalSeconds;
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if (totalDuration < 20 && ExtractWindowModel.ExtractFrameMode == Models.ExtractFrameMode.DeleteFrame)
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{
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string errorMsg = $"视频时长太短：{currentVideo}（{totalDuration:F2}秒），需要至少20秒";
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LogUtils.Error(errorMsg);
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errorMessages.Add(errorMsg);
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Interlocked.Increment(ref completedTasks);
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currentCompleted = completedTasks;
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progressPercent = currentCompleted * 100.0 / totalTasks;
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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var taskItem = new Models.ExtractTaskItem
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{
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Index = currentIndex.ToString(),
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FileName = displayFileName,
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FullFileName = _tmpFileName,
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Status = "失败",
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OriginalSize = "--",
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OutputSize = "--",
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SizeChange = "--",
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Duration = "--",
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Progress = $"{progressPercent:F1}%"
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};
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ExtractWindowModel.TaskItems.Add(taskItem);
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});
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return;
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}
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}
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catch (Exception ex)
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{
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LogUtils.Error($"检查视频时长失败：{currentVideo}", ex);
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// 继续处理，让后续方法来处理错误
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}
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// 记录开始时间
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DateTime taskStartTime = DateTime.Now;
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// 根据选择的处理方式调用相应方法
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bool success = false;
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if (ExtractWindowModel.ExtractFrameMode == Models.ExtractFrameMode.DeleteFrame)
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{
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// 方案1：随机删除一个非关键帧（传入index确保每次位置不同）
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success = await VideoProcess.RemoveNonKeyFrameAsync(currentVideo, outputPath, currentIndex);
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}
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else if (ExtractWindowModel.ExtractFrameMode == Models.ExtractFrameMode.AddTransparentImage)
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{
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// 方案2：在随机位置添加透明图
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success = await VideoProcess.AddTransparentImageAsync(currentVideo, outputPath);
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}
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else
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{
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// 默认使用原来的方法（保留兼容性）
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success = await VideoProcess.RemoveFrameRandomeAsync(currentVideo, outputPath);
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}
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// 计算处理时间
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TimeSpan taskDuration = DateTime.Now - taskStartTime;
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// 更新完成计数
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Interlocked.Increment(ref completedTasks);
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currentCompleted = completedTasks;
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progressPercent = currentCompleted * 100.0 / totalTasks;
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// 再次检查文件是否存在
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if (File.Exists(outputPath))
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{
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FileInfo outputFileInfo = new FileInfo(outputPath);
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long outputSize = outputFileInfo.Length;
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Interlocked.Add(ref totalOutputSize, outputSize);
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Interlocked.Increment(ref successCount);
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double originalMB = originalSize / 1024.0 / 1024.0;
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double outputMB = outputSize / 1024.0 / 1024.0;
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double sizeDiff = outputSize - originalSize;
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double sizeDiffMB = Math.Abs(sizeDiff) / 1024.0 / 1024.0;
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string sizeChange = sizeDiff > 0 ? $"+{sizeDiffMB:F2}" : sizeDiff < 0 ? $"-{sizeDiffMB:F2}" : "0";
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string sizeChangeMB = sizeChange + "MB";
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string originalSizeStr = $"{originalMB:F2}MB";
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string outputSizeStr = $"{outputMB:F2}MB";
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string durationStr = $"{taskDuration.TotalSeconds:F1}s";
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successMessages.Add($"{currentVideo} (第{currentIndex}个) - 成功");
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LogUtils.Info($"处理成功：{currentVideo} -> {outputPath}, 大小={outputMB:F2}MB, 耗时={taskDuration.TotalSeconds:F2}秒");
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// 更新表格行
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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var taskItem = new Models.ExtractTaskItem
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{
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Index = currentIndex.ToString(),
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FileName = displayFileName,
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FullFileName = _tmpFileName,
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Status = "成功",
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OriginalSize = originalSizeStr,
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OutputSize = outputSizeStr,
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SizeChange = sizeChangeMB,
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Duration = durationStr,
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Progress = $"{progressPercent:F1}%"
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};
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ExtractWindowModel.TaskItems.Add(taskItem);
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});
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}
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else if (success)
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{
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LogUtils.Warn($"处理返回成功但文件不存在：{outputPath}");
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string errorMsg = $"{currentVideo} (第{currentIndex}个) - 返回成功但文件不存在";
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errorMessages.Add(errorMsg);
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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var taskItem = new Models.ExtractTaskItem
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{
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Index = currentIndex.ToString(),
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FileName = displayFileName,
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FullFileName = _tmpFileName,
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Status = "警告",
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OriginalSize = "--",
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OutputSize = "--",
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SizeChange = "--",
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Duration = "--",
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Progress = $"{progressPercent:F1}%"
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};
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ExtractWindowModel.TaskItems.Add(taskItem);
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});
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}
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else
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{
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string errorMsg = $"{currentVideo} (第{currentIndex}个) - 处理失败";
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LogUtils.Error($"{errorMsg} -> {outputPath}");
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errorMessages.Add(errorMsg);
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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var taskItem = new Models.ExtractTaskItem
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{
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Index = currentIndex.ToString(),
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FileName = displayFileName,
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FullFileName = _tmpFileName,
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Status = "失败",
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OriginalSize = "--",
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OutputSize = "--",
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SizeChange = "--",
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Duration = "--",
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Progress = $"{progressPercent:F1}%"
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};
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ExtractWindowModel.TaskItems.Add(taskItem);
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});
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}
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}
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catch (Exception ex)
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{
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// 在异常处理中重新获取文件名等信息
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string originalFileNameForError = Path.GetFileNameWithoutExtension(currentVideo);
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string errorMsg = $"抽帧异常：{currentVideo} (第{currentIndex}个) - {ex.Message}";
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LogUtils.Error($"抽帧失败：{currentVideo} (第{currentIndex}个)", ex);
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errorMessages.Add(errorMsg);
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Interlocked.Increment(ref completedTasks);
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int currentCompletedForError = completedTasks;
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double progressPercentForError = currentCompletedForError * 100.0 / totalTasks;
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string displayFileNameForError = originalFileNameForError.Length > 15 ? originalFileNameForError.Substring(0, 12) + "..." : originalFileNameForError.PadRight(15);
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string modeSuffixForError2 = ExtractWindowModel.ExtractFrameMode == Models.ExtractFrameMode.DeleteFrame ? "方案1" : "方案2";
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string dateStrForError2 = DateTime.Now.ToString("yyyyMMdd");
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ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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var taskItem = new Models.ExtractTaskItem
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{
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Index = currentIndex.ToString(),
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FileName = displayFileNameForError,
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FullFileName = $"{originalFileNameForError}_{modeSuffixForError2}_{dateStrForError2}_{currentIndex:D4}{Path.GetExtension(currentVideo)}",
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Status = "异常",
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OriginalSize = "--",
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OutputSize = "--",
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SizeChange = "--",
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Duration = "--",
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Progress = $"{progressPercentForError:F1}%"
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};
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ExtractWindowModel.TaskItems.Add(taskItem);
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});
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}
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finally
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{
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semaphore.Release();
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}
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});
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_tasks.Add(_task);
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}
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}
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await Task.WhenAll(_tasks);
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// 计算总耗时
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TimeSpan totalDuration = DateTime.Now - startTime;
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// 统计实际生成的文件数量
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int actualFileCount = 0;
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string outputDir = "";
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if (ExtractWindowModel.videos.Length > 0)
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{
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string firstVideo = ExtractWindowModel.videos[0];
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string videoDir = Path.GetDirectoryName(firstVideo) ?? "";
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outputDir = Path.Combine(videoDir, "out");
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if (Directory.Exists(outputDir))
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{
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actualFileCount = Directory.GetFiles(outputDir, "*.mp4").Length;
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LogUtils.Info($"输出目录 {outputDir} 中共有 {actualFileCount} 个视频文件");
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}
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}
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// 构建最终详细信息
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double totalOriginalMB = totalOriginalSize / 1024.0 / 1024.0;
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double totalOutputMB = totalOutputSize / 1024.0 / 1024.0;
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double totalSizeDiff = totalOutputSize - totalOriginalSize;
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double totalSizeDiffMB = Math.Abs(totalSizeDiff) / 1024.0 / 1024.0;
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string totalSizeChange = totalSizeDiff > 0 ? $"+{totalSizeDiffMB:F2}MB" : totalSizeDiff < 0 ? $"-{totalSizeDiffMB:F2}MB" : "0MB";
|
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string summaryInfo = $"\n处理完成！\n" +
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$"处理方案：{modeText} | 总任务数：{totalTasks} 个\n" +
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$"成功数量：{successCount} 个 | 失败数量：{errorMessages.Count} 个 | 跳过数量：{skipCount} 个\n" +
|
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$"实际生成：{actualFileCount} 个文件\n" +
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$"总原始大小：{totalOriginalMB:F2}MB | 总输出大小：{totalOutputMB:F2}MB | 大小变化：{totalSizeChange}\n" +
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$"总耗时：{totalDuration.TotalSeconds:F1}秒 ({totalDuration.TotalMinutes:F1}分钟) | 平均速度：{(successCount > 0 ? totalDuration.TotalSeconds / successCount : 0):F2}秒/个\n" +
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$"输出目录：{outputDir}\n" +
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$"完成时间：{DateTime.Now:yyyy-MM-dd HH:mm:ss}";
|
||
|
||
ExtractWindowModel.Dispatcher.Invoke(() =>
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{
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ExtractWindowModel.HelpInfo += $"\n{summaryInfo}";
|
||
|
||
// 如果有错误信息，显示汇总
|
||
if (errorMessages.Count > 0)
|
||
{
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||
ExtractWindowModel.HelpInfo += $"\n错误信息（共{errorMessages.Count}个）：";
|
||
foreach (var error in errorMessages)
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||
{
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||
ExtractWindowModel.HelpInfo += $"\n • {error}";
|
||
}
|
||
}
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||
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||
ExtractWindowModel.IsStart = false;
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||
ExtractWindowModel.IsCanOperate = true;
|
||
});
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||
LogUtils.Info($"处理完成，成功={successCount}, 失败={errorMessages.Count}, 跳过={skipCount}, 总耗时={totalDuration.TotalSeconds:F1}秒");
|
||
});
|
||
}
|
||
},
|
||
|
||
BtnStartVideoModifyCommand = new Command()
|
||
{
|
||
DoExcue = obj =>
|
||
{
|
||
ExtractWindowModel.HelpInfo = "";
|
||
|
||
|
||
SemaphoreSlim semaphore = new(10); // Limit to 3 threads
|
||
|
||
List<Task> _tasks = [];
|
||
|
||
ExtractWindowModel.videos.ForEach(async (video) =>
|
||
{
|
||
await semaphore.WaitAsync(); // Wait when more than 3 threads are running
|
||
var _task = Task.Run(async () =>
|
||
{
|
||
try
|
||
{
|
||
// 实例化并调用
|
||
var remover = new VideoProcess();
|
||
// 删除4秒处的帧（需根据实际帧位置调整）
|
||
string _tmpPath = Path.GetDirectoryName(video) ?? "";
|
||
string _tmpFileName = $"{(new Random()).Next(10000, 99999)}{Path.GetFileName(video)}";
|
||
|
||
string outPath = Path.Combine(_tmpPath, "out");
|
||
if (!Path.Exists(outPath))
|
||
{
|
||
Directory.CreateDirectory(outPath);
|
||
}
|
||
|
||
VideoProcess.ModifyByMetadata(video, $"{_tmpPath}\\out\\modify{_tmpFileName}");
|
||
}
|
||
finally
|
||
{
|
||
semaphore.Release(); // Work is done, signal to semaphore that more work is possible
|
||
}
|
||
});
|
||
_tasks.Add(_task);
|
||
});
|
||
|
||
Task.WhenAll(_tasks).ContinueWith((task) =>
|
||
{
|
||
ExtractWindowModel.HelpInfo = "全部完成!";
|
||
});
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
private void ListFolder()
|
||
{
|
||
DirectoryInfo dir = new(ExtractWindowModel.FolderPath);
|
||
try
|
||
{
|
||
DirectoryInfo dirD = dir as DirectoryInfo;
|
||
|
||
//获取文件夹下所有视频文件
|
||
|
||
ExtractWindowModel.videos = Directory.GetFiles(dirD.FullName, "*.mp4");
|
||
ExtractWindowModel.SetCanStart();
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
MessageBox.Show(ex.Message);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
}
|