Bug fixes.

Kareadita · maxpiva · Aug 15, 2024 · Aug 15, 2024 · Aug 23, 2024 · Aug 23, 2024
commit b6a986a685fbb56844d8a11501c13eba695f84f2
diff --git a/API/Services/BookService.cs b/API/Services/BookService.cs
@@ -1276,10 +1276,17 @@ private static void GetPdfPage(IDocReader docReader, int pageNumber, Stream stre
     {
         using var pageReader = docReader.GetPageReader(pageNumber);
         var rawBytes = pageReader.GetImage(new NaiveTransparencyRemover());
-        var floats = rawBytes.Select(a=> (float)a*256F).ToArray();
+        var floats = new float[rawBytes.Length];
+        for (var i = 0; i < rawBytes.Length; i += 4)
+        {
+            floats[i] = rawBytes[i + 2] << 8;
+            floats[i + 1] = rawBytes[i + 1] << 8;
+            floats[i+2] = rawBytes[i] << 8;
+            floats[i+3] = rawBytes[i + 3] << 8;
+        }
         var width = pageReader.GetPageWidth();
         var height = pageReader.GetPageHeight();
-        using MagickImage image = new MagickImage(rawBytes, width, height,MagickFormat.Bgra);
+        MagickImage image = new MagickImage(MagickColor.FromRgba(0, 0, 0,0), width, height);
         using var pixels = image.GetPixels();
         pixels.SetArea(0,0,width, height, floats);
         stream.Seek(0, SeekOrigin.Begin);

diff --git a/API/Services/ImageService.cs b/API/Services/ImageService.cs
@@ -789,7 +789,7 @@ public string CreateThumbnailFromBase64(string encodedImage, string fileName, En
         try
         {
 
-            using var thumbnail = new MagickImage(Convert.FromBase64String(encodedImage));
+            using var thumbnail = MagickImage.FromBase64(encodedImage);
             int thumbnailHeight = (int)(thumbnail.Height * ((double)thumbnailWidth / thumbnail.Width));
             thumbnail.Thumbnail(thumbnailWidth, thumbnailHeight);
             fileName += encodeFormat.GetExtension();