Initial AmiReel application

2026-08-11 10:43:27 +02:00
commit 438f163630
28 changed files with 1160 additions and 0 deletions
@@ -0,0 +1,69 @@
+using System.IO;
+using System.Reflection;
+using System.Security.Cryptography;
+
+namespace AmigaDB.VideoRenderer.Services;
+
+public sealed record ToolPaths(string Ffmpeg, string Ffprobe);
+
+public static class ToolExtractor
+{
+    public static async Task<ToolPaths> ResolveAsync(string ffmpegPath, string ffprobePath, CancellationToken cancellationToken = default)
+    {
+        if (!string.IsNullOrWhiteSpace(ffmpegPath) || !string.IsNullOrWhiteSpace(ffprobePath))
+        {
+            if (string.IsNullOrWhiteSpace(ffmpegPath) || !File.Exists(ffmpegPath))
+                throw new FileNotFoundException("Configured ffmpeg.exe was not found.");
+            if (string.IsNullOrWhiteSpace(ffprobePath) || !File.Exists(ffprobePath))
+                throw new FileNotFoundException("Configured ffprobe.exe was not found.");
+            return new ToolPaths(ffmpegPath, ffprobePath);
+        }
+
+        return await ExtractAsync(cancellationToken);
+    }
+
+    private static async Task<ToolPaths> ExtractAsync(CancellationToken cancellationToken = default)
+    {
+        string toolDir = Path.Combine(
+            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+            "AmiReel", "tools", "0.1.0");
+        Directory.CreateDirectory(toolDir);
+
+        string ffmpeg = await ExtractOneAsync("ffmpeg.exe", toolDir, cancellationToken);
+        string ffprobe = await ExtractOneAsync("ffprobe.exe", toolDir, cancellationToken);
+        return new ToolPaths(ffmpeg, ffprobe);
+    }
+
+    private static async Task<string> ExtractOneAsync(string fileName, string destination, CancellationToken token)
+    {
+        Assembly assembly = Assembly.GetExecutingAssembly();
+        string resourceName = $"AmigaDB.VideoRenderer.Tools.{fileName}";
+        await using Stream source = assembly.GetManifestResourceStream(resourceName)
+            ?? throw new InvalidOperationException(
+                $"Embedded {fileName} was not found. Add it to ThirdParty and publish the application again.");
+
+        string target = Path.Combine(destination, fileName);
+        string temporary = target + ".new";
+        await using (FileStream output = File.Create(temporary))
+            await source.CopyToAsync(output, token);
+
+        if (File.Exists(target) && FilesMatch(target, temporary))
+        {
+            File.Delete(temporary);
+            return target;
+        }
+
+        File.Move(temporary, target, true);
+        return target;
+    }
+
+    private static bool FilesMatch(string first, string second)
+    {
+        using SHA256 sha = SHA256.Create();
+        using FileStream a = File.OpenRead(first);
+        byte[] aHash = sha.ComputeHash(a);
+        using FileStream b = File.OpenRead(second);
+        byte[] bHash = sha.ComputeHash(b);
+        return aHash.AsSpan().SequenceEqual(bHash);
+    }
+}