Added mp4 video texture support

RePKG.Application/Texture/TexToImageConverter.cs

@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Net.Mime;
 using RePKG.Application.Texture.Helpers;
 using RePKG.Core.Texture;
 using SixLabors.ImageSharp;
@@ -15,11 +16,32 @@ public class TexToImageConverter
         public ImageResult ConvertToImage(ITex tex)
         {
             if (tex == null) throw new ArgumentNullException(nameof(tex));
-            
+
             if (tex.IsGif)
                 return ConvertToGif(tex);
-
+            
             var sourceMipmap = tex.FirstImage.FirstMipmap;
+
+            if (tex.IsVideoTexture)
+            {
+                if (sourceMipmap.Bytes.Length < 4)
+                {
+                    throw new InvalidOperationException("Expected mp4 magic header");
+                }
+
+                var bytes = sourceMipmap.Bytes;
+                if (bytes[0] != 0x00 || bytes[1] != 0x00 || bytes[2] != 0x00 || bytes[3] != 0x20)
+                {
+                    throw new InvalidOperationException("Expected mp4 magic header");
+                }
+
+                return new ImageResult
+                {
+                    Bytes = sourceMipmap.Bytes,
+                    Format = MipmapFormat.VideoMp4
+                };
+            }
+
             var format = sourceMipmap.Format;
 
             if (format.IsCompressed())
@@ -55,9 +77,11 @@ public ImageResult ConvertToImage(ITex tex)
         public MipmapFormat GetConvertedFormat(ITex tex)
         {
             if (tex == null) throw new ArgumentNullException(nameof(tex));
-
-            if (tex.IsGif)
-                return MipmapFormat.ImageGIF;
+
+            if (tex.IsVideoTexture)
+            {
+                return MipmapFormat.VideoMp4;
+            }
 
             var format = tex.FirstImage.FirstMipmap.Format;
 
@@ -95,11 +119,11 @@ private static ImageResult ConvertToGif(ITex tex)
                 var height = frameInfo.Height != 0 ? frameInfo.Height : frameInfo.WidthY;
                 var x = Math.Min(frameInfo.X, frameInfo.X + width);
                 var y = Math.Min(frameInfo.Y, frameInfo.Y + height);
-                
+
                 // This formula gives us the angle for which we need to turn the frame,
                 // assuming that either Width or HeightX is 0 (same with Height and WidthY)
                 var rotationAngle = -(Math.Atan2(Math.Sign(height), Math.Sign(width)) - Math.PI / 4);
-                
+
                 var frame = sequenceImages[frameInfo.ImageId].Clone(
                     context => context.Crop(new Rectangle(
                         (int) x,

RePKG.Core/Texture/Enums/MipmapFormat.cs

@@ -33,6 +33,11 @@ public enum MipmapFormat
         /// Raw pixels compressed using DXT1
         /// </summary>
         CompressedDXT1,
+
+        /// <summary>
+        /// MP4 Video
+        /// </summary>
+        VideoMp4,
 
         /// <summary>
         /// Windows or OS/2 Bitmap File (*.BMP)

RePKG.Core/Texture/Enums/TexFlags.cs

@@ -12,7 +12,7 @@ public enum TexFlags
         // Placeholders
         Unk3 = 8,
         Unk4 = 16,
-        Unk5 = 32,
+        IsVideoTexture = 32,
         Unk6 = 64,
         Unk7 = 128,
     }

RePKG.Core/Texture/Helpers/MipmapFormatExtensions.cs

@@ -115,6 +115,8 @@ public static string GetFileExtension(this MipmapFormat format)
                     return "pict";
                 case MipmapFormat.ImageRAW:
                     return "raw";
+                case MipmapFormat.VideoMp4:
+                    return "mp4";
                 default:
                     throw new ArgumentOutOfRangeException(nameof(format), format, null);
             }

RePKG.Core/Texture/Interfaces/Data/ITex.cs

@@ -9,6 +9,7 @@ public interface ITex
         ITexFrameInfoContainer FrameInfoContainer { get; set; }
 
         bool IsGif { get; }
+        bool IsVideoTexture { get; }
         ITexImage FirstImage { get; }
 
         bool HasFlag(TexFlags flag);

RePKG.Core/Texture/Tex.cs

@@ -11,6 +11,7 @@ public class Tex : ITex
         public ITexFrameInfoContainer FrameInfoContainer { get; set; }
 
         public bool IsGif => HasFlag(TexFlags.IsGif);
+        public bool IsVideoTexture => HasFlag(TexFlags.IsVideoTexture);
         public ITexImage FirstImage => ImagesContainer?.Images.FirstOrDefault();
 
         public bool HasFlag(TexFlags flag)

RePKG.Tests/TexDecompressingTests.cs

@@ -40,6 +40,7 @@ public void SetUp()
         [TestCase("V3_DXT3", true, null)]
         [TestCase("V3_DXT5", true, null)]
         [TestCase("V3_RGBA8888_GIF_TEXS0003", true, TexFlags.IsGif)]
+        [TestCase("V3_VIDEOTEXTURE_MP4", true, TexFlags.IsVideoTexture)]
         public void TestTexDecompressing(
             string name,
             bool validateBytes = true,

RePKG.Tests/TexWriterTests.cs

@@ -47,6 +47,7 @@ public void Setup()
         [TestCase("V3_DXT3")]
         [TestCase("V3_DXT5")]
         [TestCase("V3_RGBA8888_GIF_TEXS0003")]
+        [TestCase("V3_VIDEOTEXTURE_MP4")]
         public void TestWriteAndRead(string name)
         {
             // Load file

RePKG/Command/Extract.cs

@@ -374,7 +374,6 @@ private static void ConvertToImageAndSave(ITex tex, string path, bool overwrite)
         }
     }
 
-
     [Verb("extract", HelpText = "Extract PKG/Convert TEX into image.")]
     public class ExtractOptions
     {