Add GPU Detection

Util/GPUUtil.cs

@@ -0,0 +1,68 @@
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Text.RegularExpressions;
+using ADOFAIRenderer.Util.FFmpeg;
+using MelonLoader;
+
+namespace ADOFAIRenderer.Util
+{
+    [SuppressMessage("ReSharper", "InconsistentNaming")]
+    public enum GPUVendor
+    {
+        Unknown, NVIDIA, AMD, Intel
+    }
+    
+    public static class GPUUtil
+    {
+        private const string NvidiaPattern = 
+            @"^NVIDIA GeForce [RG]TX [0-9]+(?>(?> Ti)|(?> SUPER)|(?> [0-9]+GB))?(?> Laptop GPU)?/PCIe/SSE2$";
+
+        private const string IntelPattern =
+            @"^Intel(?>\(R\))* (?>U*HD Graphics [0-9]+$|Arc\(TM\) [A-C][0-9]+ Graphics)";
+        
+        private static Dictionary<Codec, List<(GPUVendor, string)>> _codecMap = new Dictionary<Codec, List<(GPUVendor, string)>>
+        {
+            { Codec.H264, new List<(GPUVendor, string)> { (GPUVendor.NVIDIA, "h264_nvenc"), (GPUVendor.Intel, "h264_qsv"), (GPUVendor.AMD, "h264_amf"), (GPUVendor.Unknown, "libx264") } },
+            { Codec.H265, new List<(GPUVendor, string)> { (GPUVendor.NVIDIA, "hevc_nvenc"), (GPUVendor.Intel, "hevc_qsv"), (GPUVendor.AMD, "hevc_amf"), (GPUVendor.Unknown, "libx265") } },
+            { Codec.VP9, new List<(GPUVendor, string)> { (GPUVendor.NVIDIA, "vp9_nvenc"), (GPUVendor.Intel, "vp9_qsv"), (GPUVendor.Unknown, "libvpx-vp9") } },
+            { Codec.AV1, new List<(GPUVendor, string)> { (GPUVendor.NVIDIA, "av1_nvenc"), (GPUVendor.Intel, "av1_qsv"), (GPUVendor.AMD, "av1_amf"), (GPUVendor.Unknown, "libsvtav1"), (GPUVendor.Unknown, "libaom-av1") } },
+            { Codec.VVC, new List<(GPUVendor, string)> { (GPUVendor.Unknown, "libvvenc") }}
+        };
+        
+        public static GPUVendor GetActiveGPUVendor()
+        {
+            var gpuName = UnityEngine.SystemInfo.graphicsDeviceName;
+            Melon<RenderMod>.Logger.Msg($"Active GPU: {gpuName}");
+            
+            foreach (Match unused in Regex.Matches(gpuName, NvidiaPattern))
+            {
+                return GPUVendor.NVIDIA;
+            }
+            
+            foreach (Match unused in Regex.Matches(gpuName, IntelPattern))
+            {
+                return GPUVendor.Intel;
+            }
+            
+            return GPUVendor.Unknown;
+        }
+
+        public static List<string> GetPrioritizedEncoderCandidates(Codec codec)
+        {
+            if (!_codecMap.TryGetValue(codec, out var list)) return new List<string>();
+
+            var vendor = GetActiveGPUVendor();
+            var prioritized = new List<string>();
+            var others = new List<string>();
+
+            foreach (var item in list)
+            {
+                if (item.Item1 == vendor) prioritized.Add(item.Item2);
+                else others.Add(item.Item2);
+            }
+
+            prioritized.AddRange(others);
+            return prioritized;
+        }
+    }
+}