update

Comic_Compressor/AvifCompressor.cs

@@ -1,8 +1,9 @@
-using System;
+using LibHeifSharp;
-using System.Collections.Generic;
+using SixLabors.ImageSharp;
-using System.Linq;
+using SixLabors.ImageSharp.Processing;
-using System.Text;
+using ShellProgressBar;
-using System.Threading.Tasks;
+using SixLabors.ImageSharp.Metadata;
+using SixLabors.ImageSharp.PixelFormats;
 
 namespace Comic_Compressor
 {
@@ -10,8 +11,319 @@ namespace Comic_Compressor
     {
         internal static void CompressImages(string sourceImagePath, string targetStoragePath)
         {
-            //尚未实现
+            LibHeifSharpDllImportResolver.Register();
-            throw new NotImplementedException();
+            // Step 1: Get all subdirectories and store them in a list
+            List<string> subdirectories = new(Directory.GetDirectories(sourceImagePath, "*", SearchOption.AllDirectories));
+
+            int totalFiles = 0;
+            foreach (string subdirectory in subdirectories)
+            {
+                totalFiles += GetImageFiles(subdirectory).Length;
+            }
+
+            using var progressBar = new ShellProgressBar.ProgressBar(totalFiles, "Compressing images", new ProgressBarOptions
+            {
+                ProgressCharacter = '─',
+                ProgressBarOnBottom = true
+            });
+
+            // Step 2: Iterate through each subdirectory in order
+            foreach (string subdirectory in subdirectories)
+            {
+                // Step 3: Process each directory
+                ProcessDirectory(subdirectory, sourceImagePath, targetStoragePath, progressBar);
+            }
+
+            Console.WriteLine("All directories processed successfully.");
         }
+
+        private static void ProcessDirectory(string subdirectory, string sourceImagePath, string targetStoragePath, ShellProgressBar.ProgressBar progressBar)
+        {
+            // Get the relative path of the subdirectory
+            string relativePath = Path.GetRelativePath(sourceImagePath, subdirectory);
+
+            // Create the corresponding subdirectory in the target storage path
+            string targetSubdirectory = Path.Combine(targetStoragePath, relativePath);
+            Directory.CreateDirectory(targetSubdirectory);
+
+            // Get all image files in the subdirectory (jpg and png)
+            string[] imageFiles = GetImageFiles(subdirectory);
+
+            // Set up ParallelOptions to limit the number of concurrent threads
+            ParallelOptions options = new()
+            {
+                MaxDegreeOfParallelism = 2 // Adjust this value to set the number of concurrent threads
+            };
+
+            // Process each image file in parallel
+            Parallel.ForEach(imageFiles, options, imageFile =>
+            {
+                // Set the target file path with the .avif extension
+                string targetFilePath = Path.Combine(targetSubdirectory, Path.GetFileNameWithoutExtension(imageFile) + ".avif");
+
+                // Check if the target file already exists
+                if (!File.Exists(targetFilePath))
+                {
+                    CompressImage(imageFile, targetFilePath);
+
+                    // Update progress bar safely
+                    lock (progressBar)
+                    {
+                        progressBar.Tick($"Processed {Path.GetFileName(imageFile)}");
+                    }
+                }
+                else
+                {
+                    lock (progressBar) { progressBar.Tick($"Skipped {Path.GetFileName(imageFile)}"); }
+                }
+            });
+        }
+
+        private static string[] GetImageFiles(string directoryPath)
+        {
+            // Get all image files supported by ImageSharp
+            string[] supportedExtensions = ["*.jpg", "*.jpeg", "*.png", "*.bmp", "*.gif", "*.tiff"];
+            List<string> allFiles = [];
+
+            foreach (string extension in supportedExtensions)
+            {
+                allFiles.AddRange(Directory.GetFiles(directoryPath, extension, SearchOption.TopDirectoryOnly));
+            }
+
+            return [.. allFiles];
+        }
+
+        private static void CompressImage(string sourceFilePath, string targetFilePath)
+        {
+            int quality = 80;
+            //int quality = 70;
+            var format = HeifCompressionFormat.Av1;
+            bool saveAlphaChannel = false;
+            bool writeTwoProfiles = false;
+
+            try
+            {
+                // Load the image and ensure it's in Rgb24 format
+                using var image = SixLabors.ImageSharp.Image.Load(sourceFilePath);
+                var rgbImage = image.CloneAs<Rgb24>();
+
+                //// Check the longest side of the image and resize if necessary
+                //int maxDimension = Math.Max(rgbImage.Width, rgbImage.Height);
+                //if (maxDimension > 1200)
+                //{
+                //    double scaleFactor = 1200.0 / maxDimension;
+                //    int newWidth = (int)(rgbImage.Width * scaleFactor);
+                //    int newHeight = (int)(rgbImage.Height * scaleFactor);
+                //    rgbImage.Mutate(x => x.Resize(newWidth, newHeight));
+                //}
+
+                // Save as AVIF format
+                using var context = new HeifContext();
+                HeifEncoderDescriptor? encoderDescriptor = null;
+
+                if (LibHeifInfo.HaveEncoder(format))
+                {
+                    var encoderDescriptors = context.GetEncoderDescriptors(format);
+                    encoderDescriptor = encoderDescriptors[0];
+                }
+                else
+                {
+                    Console.WriteLine("No AV1 encoder available.");
+                    return;
+                }
+
+                using HeifEncoder encoder = context.GetEncoder(encoderDescriptor);
+                if (writeTwoProfiles && !LibHeifInfo.CanWriteTwoColorProfiles)
+                {
+                    writeTwoProfiles = false;
+                    Console.WriteLine($"Warning: LibHeif version {LibHeifInfo.Version} cannot write two color profiles.");
+                }
+
+                using var heifImage = CreateHeifImage(rgbImage, writeTwoProfiles, out var metadata);
+                encoder.SetLossyQuality(quality);
+
+                var encodingOptions = new HeifEncodingOptions
+                {
+                    SaveAlphaChannel = saveAlphaChannel,
+                    WriteTwoColorProfiles = writeTwoProfiles
+                };
+                context.EncodeImage(heifImage, encoder, encodingOptions);
+                context.WriteToFile(targetFilePath);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex);
+            }
+        }
+
+
+        private static HeifImage CreateHeifImage(Image<Rgb24> image,
+                                                 bool writeTwoColorProfiles,
+                                                 out ImageMetadata metadata)
+        {
+            HeifImage? heifImage = null;
+            HeifImage? temp = null;
+
+            try
+            {
+                metadata = image.Metadata;
+                temp = ConvertToHeifImage(image);
+
+                if (writeTwoColorProfiles && metadata.IccProfile != null)
+                {
+                    temp.IccColorProfile = new HeifIccColorProfile(metadata.IccProfile.ToByteArray());
+
+                    temp.NclxColorProfile = new HeifNclxColorProfile(ColorPrimaries.BT709,
+                                                                     TransferCharacteristics.Srgb,
+                                                                     MatrixCoefficients.BT601,
+                                                                     fullRange: true);
+                }
+                else
+                {
+                    if (metadata.IccProfile != null)
+                    {
+                        temp.IccColorProfile = new HeifIccColorProfile(metadata.IccProfile.ToByteArray());
+                    }
+                    else
+                    {
+                        temp.NclxColorProfile = new HeifNclxColorProfile(ColorPrimaries.BT709,
+                                                                         TransferCharacteristics.Srgb,
+                                                                         MatrixCoefficients.BT601,
+                                                                         fullRange: true);
+                    }
+                }
+
+                heifImage = temp;
+                temp = null;
+            }
+            finally
+            {
+                temp?.Dispose();
+            }
+
+            return heifImage;
+        }
+
+        private static HeifImage ConvertToHeifImage(Image<Rgb24> image)
+        {
+            bool isGrayscale = IsGrayscale(image);
+
+            var colorspace = isGrayscale ? HeifColorspace.Monochrome : HeifColorspace.Rgb;
+            var chroma = colorspace == HeifColorspace.Monochrome ? HeifChroma.Monochrome : HeifChroma.InterleavedRgb24;
+
+            HeifImage? heifImage = null;
+            HeifImage? temp = null;
+
+            try
+            {
+                temp = new HeifImage(image.Width, image.Height, colorspace, chroma);
+
+                if (colorspace == HeifColorspace.Monochrome)
+                {
+                    temp.AddPlane(HeifChannel.Y, image.Width, image.Height, 8);
+                    CopyGrayscale(image, temp);
+                }
+                else
+                {
+                    temp.AddPlane(HeifChannel.Interleaved, image.Width, image.Height, 8);
+                    CopyRgb(image, temp);
+                }
+
+                heifImage = temp;
+                temp = null;
+            }
+            finally
+            {
+                temp?.Dispose();
+            }
+
+            return heifImage;
+        }
+
+        private static unsafe void CopyGrayscale(Image<Rgb24> image, HeifImage heifImage)
+        {
+            var grayPlane = heifImage.GetPlane(HeifChannel.Y);
+
+            byte* grayPlaneScan0 = (byte*)grayPlane.Scan0;
+            int grayPlaneStride = grayPlane.Stride;
+
+            image.ProcessPixelRows(accessor =>
+            {
+                for (int y = 0; y < accessor.Height; y++)
+                {
+                    var src = accessor.GetRowSpan(y);
+                    byte* dst = grayPlaneScan0 + (y * grayPlaneStride);
+
+                    for (int x = 0; x < accessor.Width; x++)
+                    {
+                        ref var pixel = ref src[x];
+
+                        dst[0] = pixel.R;
+
+                        dst++;
+                    }
+                }
+            });
+        }
+
+        private static unsafe void CopyRgb(Image<Rgb24> image, HeifImage heifImage)
+        {
+            var interleavedData = heifImage.GetPlane(HeifChannel.Interleaved);
+
+            byte* srcScan0 = (byte*)interleavedData.Scan0;
+            int srcStride = interleavedData.Stride;
+
+            image.ProcessPixelRows(accessor =>
+            {
+                for (int y = 0; y < accessor.Height; y++)
+                {
+                    var src = accessor.GetRowSpan(y);
+                    byte* dst = srcScan0 + (y * srcStride);
+
+                    for (int x = 0; x < accessor.Width; x++)
+                    {
+                        ref var pixel = ref src[x];
+
+                        dst[0] = pixel.R;
+                        dst[1] = pixel.G;
+                        dst[2] = pixel.B;
+
+                        dst += 3;
+                    }
+                }
+            });
+        }
+
+        private static bool IsGrayscale(Image<Rgb24> image)
+        {
+            bool isGrayscale = true;
+
+            image.ProcessPixelRows(accessor =>
+            {
+                for (int y = 0; y < accessor.Height; y++)
+                {
+                    var src = accessor.GetRowSpan(y);
+
+                    for (int x = 0; x < accessor.Width; x++)
+                    {
+                        ref var pixel = ref src[x];
+
+                        if (!(pixel.R == pixel.G && pixel.G == pixel.B))
+                        {
+                            isGrayscale = false;
+                            break;
+                        }
+                    }
+
+                    if (!isGrayscale)
+                    {
+                        break;
+                    }
+                }
+            });
+
+            return isGrayscale;
+        }
+
     }
 }

Comic_Compressor/Comic_Compressor.csproj

@@ -7,11 +7,46 @@
     <Nullable>enable</Nullable>
     <Platforms>AnyCPU;x64</Platforms>
     <UseWindowsForms>True</UseWindowsForms>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="LibHeifSharp" Version="3.2.0" />
+    <PackageReference Include="ShellProgressBar" Version="5.2.0" />
     <PackageReference Include="SixLabors.ImageSharp" Version="3.1.5" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="aom.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="dav1d.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="libde265.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="libheif.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="libs\aom.dll">
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
+    </None>
+    <None Update="libs\dav1d.dll">
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
+    </None>
+    <None Update="libs\libde265.dll">
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
+    </None>
+    <None Update="libs\libheif.dll">
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
+    </None>
+    <None Update="libs\libx265.dll">
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
+    </None>
+    <None Update="libx265.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>

Comic_Compressor/LibHeifSharpDllImportResolver.cs

@@ -0,0 +1,105 @@
+/*
+ * This file is part of libheif-sharp-samples, a collection of example applications
+ * for libheif-sharp
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, 2021, 2022, 2023 Nicholas Hayes
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+using System.Reflection;
+using System;
+using System.Runtime.InteropServices;
+
+namespace Comic_Compressor
+{
+    internal static class LibHeifSharpDllImportResolver
+    {
+        private static IntPtr cachedLibHeifModule = IntPtr.Zero;
+        private static bool firstRequestForLibHeif = true;
+
+        /// <summary>
+        /// Registers the <see cref="DllImportResolver"/> for the LibHeifSharp assembly.
+        /// </summary>
+        public static void Register()
+        {
+            // The runtime will execute the specified callback when it needs to resolve a native library
+            // import for the LibHeifSharp assembly.
+            NativeLibrary.SetDllImportResolver(typeof(LibHeifSharp.LibHeifInfo).Assembly, Resolver);
+        }
+
+        private static IntPtr Resolver(string libraryName, Assembly assembly, DllImportSearchPath? searchPath)
+        {
+            // We only care about a native library named libheif, the runtime will use
+            // its default behavior for any other native library.
+            if (string.Equals(libraryName, "libheif", StringComparison.Ordinal))
+            {
+                // Because the DllImportResolver will be called multiple times we load libheif once
+                // and cache the module handle for future requests.
+                if (firstRequestForLibHeif)
+                {
+                    firstRequestForLibHeif = false;
+                    cachedLibHeifModule = LoadNativeLibrary(libraryName, assembly, searchPath);
+                }
+
+                return cachedLibHeifModule;
+            }
+
+            // Fall back to default import resolver.
+            return IntPtr.Zero;
+        }
+
+        private static nint LoadNativeLibrary(string libraryName, Assembly assembly, DllImportSearchPath? searchPath)
+        {
+            if (OperatingSystem.IsWindows())
+            {
+                // On Windows the libheif DLL name defaults to heif.dll, so we try to load that if
+                // libheif.dll was not found.
+                try
+                {
+                    return NativeLibrary.Load(libraryName, assembly, searchPath);
+                }
+                catch (DllNotFoundException)
+                {
+                    if (NativeLibrary.TryLoad("heif.dll", assembly, searchPath, out IntPtr handle))
+                    {
+                        return handle;
+                    }
+                    else
+                    {
+                        throw;
+                    }
+                }
+            }
+            else if (OperatingSystem.IsIOS() || OperatingSystem.IsTvOS() || OperatingSystem.IsWatchOS())
+            {
+                // The Apple mobile/embedded platforms statically link libheif into the AOT compiled main program binary.
+                return NativeLibrary.GetMainProgramHandle();
+            }
+            else
+            {
+                // Use the default runtime behavior for all other platforms.
+                return NativeLibrary.Load(libraryName, assembly, searchPath);
+            }
+        }
+    }
+}

Comic_Compressor/WebpCompressor.cs

@@ -1,6 +1,7 @@
 using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.Formats.Webp;
 using SixLabors.ImageSharp.Processing;
+using ShellProgressBar;
 
 namespace Comic_Compressor
 {
@@ -11,15 +12,29 @@ namespace Comic_Compressor
             // Step 1: Get all subdirectories and store them in a list
             List<string> subdirectories = new(Directory.GetDirectories(sourceImagePath, "*", SearchOption.AllDirectories));
 
+            int totalFiles = 0;
+            foreach (string subdirectory in subdirectories)
+            {
+                totalFiles += GetImageFiles(subdirectory).Length;
+            }
+
+            using var progressBar = new ShellProgressBar.ProgressBar(totalFiles, "Compressing images", new ProgressBarOptions
+            {
+                ProgressCharacter = '─',
+                ProgressBarOnBottom = true
+            });
+
             // Step 2: Iterate through each subdirectory in order
             foreach (string subdirectory in subdirectories)
             {
                 // Step 3: Process each directory
-                ProcessDirectory(subdirectory, sourceImagePath, targetStoragePath);
+                ProcessDirectory(subdirectory, sourceImagePath, targetStoragePath, progressBar);
             }
+
+            Console.WriteLine("All directories processed successfully.");
         }
 
-        private static void ProcessDirectory(string subdirectory, string sourceImagePath, string targetStoragePath)
+        private static void ProcessDirectory(string subdirectory, string sourceImagePath, string targetStoragePath, ShellProgressBar.ProgressBar progressBar)
         {
             // Get the relative path of the subdirectory
             string relativePath = Path.GetRelativePath(sourceImagePath, subdirectory);
@@ -31,15 +46,34 @@ namespace Comic_Compressor
             // Get all image files in the subdirectory (jpg and png)
             string[] imageFiles = GetImageFiles(subdirectory);
 
-            // Iterate through each image file
+            // Set up ParallelOptions to limit the number of concurrent threads
-            foreach (string imageFile in imageFiles)
+            ParallelOptions options = new()
+            {
+                MaxDegreeOfParallelism = 2 // Adjust this value to set the number of concurrent threads
+            };
+
+            // Process each image file in parallel
+            Parallel.ForEach(imageFiles, options, imageFile =>
             {
                 // Set the target file path with the .webp extension
                 string targetFilePath = Path.Combine(targetSubdirectory, Path.GetFileNameWithoutExtension(imageFile) + ".webp");
-                CompressImage(imageFile, targetFilePath);
-            }
 
-            Console.WriteLine($"{Path.GetFileName(subdirectory)} processed successfully.");
+                // Check if the target file already exists
+                if (!File.Exists(targetFilePath))
+                {
+                    CompressImage(imageFile, targetFilePath);
+
+                    // Update progress bar safely
+                    lock (progressBar)
+                    {
+                        progressBar.Tick($"Processed {Path.GetFileName(imageFile)}");
+                    }
+                }
+                else
+                {
+                    lock (progressBar) { progressBar.Tick($"Skipped {Path.GetFileName(imageFile)}"); }
+                }
+            });
         }
 
         private static string[] GetImageFiles(string directoryPath)
@@ -69,10 +103,10 @@ namespace Comic_Compressor
                 image.Mutate(x => x.Resize(newWidth, newHeight));
             }
 
-            // Save the image as WebP with a quality level of 70 (for lossy compression)
+            // Save the image as WebP with a quality level of 85 (for lossy compression)
             var encoder = new WebpEncoder
             {
-                Quality = 70,
+                Quality = 90,
                 FileFormat = WebpFileFormatType.Lossy
             };