Initial AmiReel application

2026-08-11 10:43:27 +02:00
commit 438f163630
28 changed files with 1160 additions and 0 deletions
@@ -0,0 +1,65 @@
+using System.Diagnostics;
+using System.Globalization;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.IO;
+
+namespace AmigaDB.VideoRenderer.Services;
+
+public sealed partial class ProcessRunner
+{
+    public async Task<string> RunAsync(
+        string executable,
+        IEnumerable<string> arguments,
+        Action<string>? log,
+        Action<TimeSpan>? position,
+        CancellationToken token,
+        bool allowFailure = false)
+    {
+        ProcessStartInfo start = new()
+        {
+            FileName = executable,
+            UseShellExecute = false,
+            CreateNoWindow = true,
+            RedirectStandardError = true,
+            RedirectStandardOutput = true,
+            StandardErrorEncoding = Encoding.UTF8,
+            StandardOutputEncoding = Encoding.UTF8
+        };
+        foreach (string argument in arguments)
+            start.ArgumentList.Add(argument);
+
+        using Process process = new() { StartInfo = start, EnableRaisingEvents = true };
+        StringBuilder output = new();
+        process.Start();
+
+        Task stdout = PumpAsync(process.StandardOutput, output, log, position, token);
+        Task stderr = PumpAsync(process.StandardError, output, log, position, token);
+        using CancellationTokenRegistration registration = token.Register(() =>
+        {
+            try { if (!process.HasExited) process.Kill(true); } catch { }
+        });
+
+        await Task.WhenAll(stdout, stderr, process.WaitForExitAsync(token));
+        if (process.ExitCode != 0 && !allowFailure)
+            throw new InvalidOperationException($"Process exited with code {process.ExitCode}.\n{output}");
+        return output.ToString();
+    }
+
+    private static async Task PumpAsync(
+        StreamReader reader, StringBuilder output, Action<string>? log,
+        Action<TimeSpan>? position, CancellationToken token)
+    {
+        while (await reader.ReadLineAsync(token) is { } line)
+        {
+            output.AppendLine(line);
+            log?.Invoke(line);
+            Match match = TimeRegex().Match(line);
+            if (match.Success && TimeSpan.TryParse(match.Groups[1].Value, CultureInfo.InvariantCulture, out TimeSpan time))
+                position?.Invoke(time);
+        }
+    }
+
+    [GeneratedRegex(@"time=(\d{2}:\d{2}:\d{2}(?:\.\d+)?)", RegexOptions.CultureInvariant)]
+    private static partial Regex TimeRegex();
+}