1 files changed, 46 insertions, 0 deletions
diff --git a/src/Jellyfin.Drawing.Skia/SkiaHelper.cs b/src/Jellyfin.Drawing.Skia/SkiaHelper.cs
new file mode 100644
index 000000000..00d224da9
--- /dev/null
+++ b/src/Jellyfin.Drawing.Skia/SkiaHelper.cs
@@ -0,0 +1,46 @@
+using System.Collections.Generic;
+using SkiaSharp;
+
+namespace Jellyfin.Drawing.Skia;
+
+/// <summary>
+/// Class containing helper methods for working with SkiaSharp.
+/// </summary>
+public static class SkiaHelper
+{
+    /// <summary>
+    /// Gets the next valid image as a bitmap.
+    /// </summary>
+    /// <param name="skiaEncoder">The current skia encoder.</param>
+    /// <param name="paths">The list of image paths.</param>
+    /// <param name="currentIndex">The current checked index.</param>
+    /// <param name="newIndex">The new index.</param>
+    /// <returns>A valid bitmap, or null if no bitmap exists after <c>currentIndex</c>.</returns>
+    public static SKBitmap? GetNextValidImage(SkiaEncoder skiaEncoder, IReadOnlyList<string> paths, int currentIndex, out int newIndex)
+    {
+        var imagesTested = new Dictionary<int, int>();
+        SKBitmap? bitmap = null;
+
+        while (imagesTested.Count < paths.Count)
+        {
+            if (currentIndex >= paths.Count)
+            {
+                currentIndex = 0;
+            }
+
+            bitmap = skiaEncoder.Decode(paths[currentIndex], false, null, out _);
+
+            imagesTested[currentIndex] = 0;
+
+            currentIndex++;
+
+            if (bitmap is not null)
+            {
+                break;
+            }
+        }
+
+        newIndex = currentIndex;
+        return bitmap;
+    }
+}