134 lines
4.0 KiB
C#
134 lines
4.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Security.Policy;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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namespace ytdlp_gui
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{
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public class FFmpegProgressEventArgs : EventArgs
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{
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public FFmpegProgressEventArgs(float progress)
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{
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this.progress = progress;
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}
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public readonly float progress;
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}
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public class FFmpegProcess
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{
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public FFmpegProcess(Process process, string output_file)
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{
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this.process = process;
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this.output_file = output_file;
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ci = (CultureInfo)CultureInfo.CurrentCulture.Clone();
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ci.NumberFormat.CurrencyDecimalSeparator = ".";
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this.header_regex = new Regex(@"Duration: (\d+):(\d+):(\d+)\.(\d+)");
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this.progress_regex = new Regex(@"time=(\d+):(\d+):(\d+)\.(\d+)");
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}
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~FFmpegProcess()
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{
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Cancel();
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}
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public async Task<string> Run()
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{
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if (File.Exists(output_file))
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System.IO.File.Delete(output_file);
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process.Start();
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int duration = 0;
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int progress = 0;
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string line = null;
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while ((line = await process.StandardError.ReadLineAsync()) != null)
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{
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Match match;
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match = header_regex.Match(line);
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if (match.Success)
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{
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GroupCollection groups = match.Groups;
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duration =
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int.Parse(groups[1].Value) * 3600
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+ int.Parse(groups[2].Value) * 60
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+ int.Parse(groups[3].Value);
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}
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match = progress_regex.Match(line);
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if (match.Success)
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{
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GroupCollection groups = match.Groups;
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progress =
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int.Parse(groups[1].Value) * 3600
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+ int.Parse(groups[2].Value) * 60
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+ int.Parse(groups[3].Value);
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Progress?.Invoke(this, new FFmpegProgressEventArgs((float)progress / duration));
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}
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}
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process.WaitForExit();
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process.Close();
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Finished?.Invoke(this, new EventArgs());
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return null;
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}
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public void Cancel()
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{
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bool finished = true;
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try // to kill the process before deleting the file
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{
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finished = process.HasExited;
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process.Kill();
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process.WaitForExit();
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process.Close();
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}
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catch { }
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// if (!finished && File.Exists(output_file))
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// System.IO.File.Delete(output_file);
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}
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private readonly Process process;
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private readonly string output_file;
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private readonly CultureInfo ci;
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private readonly Regex header_regex;
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private readonly Regex progress_regex;
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public event EventHandler<FFmpegProgressEventArgs> Progress;
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public event EventHandler Finished;
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}
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public class FFmpeg : Program
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{
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public FFmpeg() : base("ffmpeg")
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{
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}
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public FFmpegProcess Convert(string from, string to)
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{
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Process process = new Process();
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process.StartInfo.FileName = program;
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process.StartInfo.Arguments = String.Format(
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"-i \"{0}\" \"{1}\"",
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from.Replace("\"", "\"\"\""),
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to.Replace("\"", "\"\"\"")
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);
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process.StartInfo.UseShellExecute = false;
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process.StartInfo.CreateNoWindow = true;
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process.StartInfo.RedirectStandardOutput = true;
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process.StartInfo.RedirectStandardError = true;
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return new FFmpegProcess(process, to);
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}
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}
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}
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