New: Swap to ImageSharp library for resizing posters

build.sh

@@ -192,6 +192,24 @@ PatchMono()
             
         fi
     done
+
+    # Copy more stable version of Vectors for mono <5.12
+    if [ -e $path/System.Numerics.Vectors.dll ]; then
+        packageDir="$HOME/.nuget/packages/system.numerics.vectors/4.5.0"
+
+        if [ ! -d "$HOME/.nuget/packages/system.numerics.vectors/4.5.0" ]; then
+            # May reside in the NuGetFallback folder, which is harder to find
+            # Download somewhere to get the real cache populated
+            if [ $runtime = "dotnet" ] ; then
+                $nuget install System.Numerics.Vectors -Version 4.5.0 -Output ./_temp/System.Numerics.Vectors
+            else
+                mono $nuget install System.Numerics.Vectors -Version 4.5.0 -Output ./_temp/System.Numerics.Vectors
+            fi
+            rm -rf ./_temp/System.Numerics.Vectors
+        fi
+        # Copy the netstandard2.0 version rather than net46
+        cp "$packageDir/lib/netstandard2.0/System.Numerics.Vectors.dll" $path/
+    fi
 }
 
 PackageMono()

src/NzbDrone.Core.Test/MediaCoverTests/ImageResizerFixture.cs

@@ -4,7 +4,9 @@ using FluentAssertions;
 using Moq;
 using NUnit.Framework;
 using NzbDrone.Common.Disk;
+using NzbDrone.Common.EnvironmentInfo;
 using NzbDrone.Core.Test.Framework;
+using SixLabors.ImageSharp;
 
 namespace NzbDrone.Core.Test.MediaCoverTests
 {
@@ -14,13 +16,10 @@ namespace NzbDrone.Core.Test.MediaCoverTests
         [SetUp]
         public void SetUp()
         {
-            Mocker.GetMock<IDiskProvider>()
-                  .Setup(v => v.OpenReadStream(It.IsAny<string>()))
-                  .Returns<string>(s => new FileStream(s, FileMode.Open));
-
-            Mocker.GetMock<IDiskProvider>()
-                  .Setup(v => v.OpenWriteStream(It.IsAny<string>()))
-                  .Returns<string>(s => new FileStream(s, FileMode.Create));
+            if (PlatformInfo.GetVersion() < new Version(5, 8))
+            {
+                Assert.Inconclusive("Not supported on Mono < 5.8");
+            }
 
             Mocker.GetMock<IDiskProvider>()
                   .Setup(v => v.FileExists(It.IsAny<string>()))
@@ -29,6 +28,8 @@ namespace NzbDrone.Core.Test.MediaCoverTests
             Mocker.GetMock<IDiskProvider>()
                   .Setup(v => v.DeleteFile(It.IsAny<string>()))
                   .Callback<string>(s => File.Delete(s));
+
+            Mocker.SetConstant<IPlatformInfo>(Mocker.Resolve<PlatformInfo>());
         }
 
         [Test]
@@ -45,10 +46,12 @@ namespace NzbDrone.Core.Test.MediaCoverTests
             fileInfo.Exists.Should().BeTrue();
             fileInfo.Length.Should().BeInRange(1000, 30000);
 
-            var image = System.Drawing.Image.FromFile(resizedFile);
+            using (var image = Image.Load(resizedFile))
+            {
                 image.Height.Should().Be(170);
                 image.Width.Should().Be(170);
             }
+        }
 
         [Test]
         public void should_delete_file_if_failed()

src/NzbDrone.Core/MediaCover/GdiPlusInterop.cs

@@ -1,44 +0,0 @@
-using System;
-using System.Drawing;
-using NzbDrone.Common.EnvironmentInfo;
-
-namespace NzbDrone.Core.MediaCover
-{
-    public static class GdiPlusInterop
-    {
-        private static Exception _gdiPlusException;
-
-        static GdiPlusInterop()
-        {
-            TestLibrary();
-        }
-
-        private static void TestLibrary()
-        {
-            if (OsInfo.IsWindows)
-            {
-                return;
-            }
-
-            try
-            {
-                // We use StringFormat as test coz it gets properly cleaned up by the finalizer even if gdiplus is absent and is relatively non-invasive.
-                var strFormat = new StringFormat();
-
-                strFormat.Dispose();
-            }
-            catch (Exception ex)
-            {
-                _gdiPlusException = ex;
-            }
-        }
-
-        public static void CheckGdiPlus()
-        {
-            if (_gdiPlusException != null)
-            {
-                throw new DllNotFoundException("Couldn't load GDIPlus library", _gdiPlusException);
-            }
-        }
-    }
-}

src/NzbDrone.Core/MediaCover/ImageResizer.cs

@@ -1,5 +1,9 @@
-using ImageResizer;
-using NzbDrone.Common.Disk;
+using NzbDrone.Common.Disk;
+using NzbDrone.Common.EnvironmentInfo;
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.Formats.Jpeg;
+using SixLabors.ImageSharp.Processing;
+using SixLabors.Memory;
 
 namespace NzbDrone.Core.MediaCover
 {
@@ -11,29 +15,40 @@ namespace NzbDrone.Core.MediaCover
     public class ImageResizer : IImageResizer
     {
         private readonly IDiskProvider _diskProvider;
+        private readonly bool _enabled;
 
-        public ImageResizer(IDiskProvider diskProvider)
+        public ImageResizer(IDiskProvider diskProvider, IPlatformInfo platformInfo)
         {
             _diskProvider = diskProvider;
+
+            // Random segfaults on mono 5.0 and 5.4
+            if (PlatformInfo.IsMono && platformInfo.Version < new System.Version(5, 8))
+            {
+                return;
             }
 
-        public void Resize(string source, string destination, int height)
+            _enabled = true;
+
+            // More conservative memory allocation
+            SixLabors.ImageSharp.Configuration.Default.MemoryAllocator = new SimpleGcMemoryAllocator();
+
+            // Thumbnails don't need super high quality
+            SixLabors.ImageSharp.Configuration.Default.ImageFormatsManager.SetEncoder(JpegFormat.Instance, new JpegEncoder
             {
-            try
+                Quality = 92
+            });
+        }
+
+        public void Resize(string source, string destination, int height)
         {
-                GdiPlusInterop.CheckGdiPlus();
+            if (!_enabled) return;
 
-                using (var sourceStream = _diskProvider.OpenReadStream(source))
+            try
             {
-                    using (var outputStream = _diskProvider.OpenWriteStream(destination))
+                using (var image = Image.Load(source))
                 {
-                        var settings = new Instructions();
-                        settings.Height = height;
-
-                        var job = new ImageJob(sourceStream, outputStream, settings);
-
-                        ImageBuilder.Current.Build(job);
-                    }
+                    image.Mutate(x => x.Resize(0, height));
+                    image.Save(destination);
                 }
             }
             catch

src/NzbDrone.Core/MediaCover/MediaCoverService.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Net;
+using System.Threading;
 using NLog;
 using NzbDrone.Common.Disk;
 using NzbDrone.Common.EnvironmentInfo;
@@ -35,6 +36,10 @@ namespace NzbDrone.Core.MediaCover
 
         private readonly string _coverRootFolder;
 
+        // ImageSharp is slow on ARM (no hardware acceleration on mono yet)
+        // So limit the number of concurrent resizing tasks
+        private static SemaphoreSlim _semaphore = new SemaphoreSlim((int)Math.Ceiling(Environment.ProcessorCount / 2.0));
+
         public MediaCoverService(IImageResizer resizer,
                                  IHttpClient httpClient,
                                  IDiskProvider diskProvider,
@@ -85,6 +90,8 @@ namespace NzbDrone.Core.MediaCover
 
         private void EnsureCovers(Series series)
         {
+            var toResize = new List<Tuple<MediaCover, bool>>();
+
             foreach (var cover in series.Images)
             {
                 var fileName = GetCoverPath(series.Id, cover.CoverType);
@@ -106,7 +113,21 @@ namespace NzbDrone.Core.MediaCover
                     _logger.Error(e, "Couldn't download media cover for {0}", series);
                 }
 
-                EnsureResizedCovers(series, cover, !alreadyExists);
+                toResize.Add(Tuple.Create(cover, alreadyExists));
+            }
+
+            try
+            {
+                _semaphore.Wait();
+
+                foreach (var tuple in toResize)
+                {
+                    EnsureResizedCovers(series, tuple.Item1, !tuple.Item2);
+                }
+            }
+            finally
+            {
+                _semaphore.Release();
             }
         }
 

src/NzbDrone.Core/Sonarr.Core.csproj

@@ -6,7 +6,8 @@
   <ItemGroup>
     <PackageReference Include="FluentMigrator.Runner" Version="1.6.2" />
     <PackageReference Include="FluentValidation" Version="8.4.0" />
-    <PackageReference Include="ImageResizer" Version="4.2.5" />
+    <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta0007" />
+    <PackageReference Include="System.Numerics.Vectors" Version="4.5.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
     <PackageReference Include="NLog" Version="4.6.6" />
     <PackageReference Include="OAuth" Version="1.0.3" />

src/NzbDrone.Test.Common/NzbDroneRunner.cs

@@ -76,7 +76,7 @@ namespace NzbDrone.Test.Common
                     return;
                 }
 
-                Console.WriteLine("Waiting for NzbDrone to start. Response Status : {0}  [{1}] {2}", statusCall.ResponseStatus, statusCall.StatusDescription, statusCall.ErrorException);
+                Console.WriteLine("Waiting for NzbDrone to start. Response Status : {0}  [{1}] {2}", statusCall.ResponseStatus, statusCall.StatusDescription, statusCall.ErrorException.Message);
 
                 Thread.Sleep(500);
             }