testing using libvips

AobaCore/Services/ThumbnailService.cs

@@ -16,6 +16,7 @@ using SixLabors.ImageSharp.Processing;
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Net.Http.Headers;
 using System.Text;
@@ -135,9 +136,6 @@ public class ThumbnailService(IMongoDatabase db, AobaService aobaService)
 
 	public static async Task<Maybe<Stream>> GenerateImageThumbnailAsync(Stream stream, ThumbnailSize size, string ext, CancellationToken cancellationToken = default)
 	{
-		if(ext == ".avif")
-			return GenerateAvifThumbnail(stream, size, cancellationToken);
-
 		var img = LoadImage(stream, ext);
 		if (img.HasError)
 			return img.Error;
@@ -196,32 +194,29 @@ public class ThumbnailService(IMongoDatabase db, AobaService aobaService)
 	{
 		var w = (int)size;
 		var fn = ObjectId.GenerateNewId().ToString();
-		var filePath = $"/tmp/{fn}.in";
-		using var source = new FileStream(filePath, FileMode.CreateNew);
+		var inFilePath = $"/tmp/{fn}.avif";
+		var outFilePath = $"/tmp/{fn}.webp";
+		using var source = new FileStream(inFilePath, FileMode.CreateNew);
 		data.CopyTo(source);
 		source.Flush();
 		source.Dispose();
 		data.Dispose();
 		try
 		{
+			var process = Process.Start(new ProcessStartInfo
+			{
+				FileName = "vips",
+				Arguments = $"smartcrop \"{inFilePath}\" \"{outFilePath}\"[Q=75] {w} {w}",
+				WorkingDirectory = "/tmp"
+			});
+			if (process == null)
+				return new Error("Failed to run vips command");
+			process.WaitForExit();
+			if (process.ExitCode != 0)
+				return new Error("Failed to convert");
 			var output = new MemoryStream();
-			FFMpegArguments.FromFileInput(filePath, false, opt =>
-			{
-				//opt.WithCustomArgument("-vf  ");
-			})
-			.OutputToPipe(new StreamPipeSink(output), opt =>
-			{
-				var tonemap = ",format=gbrpf32le,zscale=primaries=bt2020:transfer=smpte2084:matrix=gbr,tonemap=hable,zscale=primaries=bt709:transfer=bt709:matrix=bt709,format=yuv420p";
-				var args = $"-vf \"crop='min(in_w,in_h)':'min(in_w,in_h)',scale={w}:{w},"
-				+ $"{tonemap}\""
-				//+ "zscale=primaries=bt2020:transfer=smpte2084:matrix=bt2020nc,format=gbrpf32le,"
-				//+ "zscale=primaries=bt709:transfer=bt709:matrix=bt709:range=tv,tonemap=hable,"
-				//+ "zscale=matrix=bt709:transfer=bt709:primaries=bt709,"
-				//+ "format=yuv420p\" "
-				+ "-colorspace bt709";
-				opt.WithCustomArgument(args)
-				.ForceFormat("webp");
-			}).ProcessSynchronously();
+			using var oFile = File.OpenRead(outFilePath);
+			oFile.CopyTo(output);
 			output.Position = 0;
 			return output;
 		}
@@ -231,7 +226,8 @@ public class ThumbnailService(IMongoDatabase db, AobaService aobaService)
 		}
 		finally
 		{
-			File.Delete(filePath);
+			File.Delete(inFilePath);
+			File.Delete(outFilePath);
 		}
 	}