84 lines
3.8 KiB
C#
84 lines
3.8 KiB
C#
using System.Drawing;
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using System.Text;
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using View_by_Distance.Shared.Models;
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using View_by_Distance.Shared.Models.Methods;
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namespace View_by_Distance.BlurHash.Models;
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public class C2_BlurHasher : IBlurHasher
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{
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private readonly IReadOnlyDictionary<string, string[]> _JsonGroups;
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public C2_BlurHasher(string resultAllInOne, string? resultsFullGroupDirectory) =>
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_JsonGroups = Shared.Models.Stateless.Methods.IPath.GetKeyValuePairs(resultAllInOne, resultsFullGroupDirectory, new string[] { "{}", "()" }, maxValue: 102);
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string IBlurHasher.Encode(FileHolder fileHolder)
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{
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string result;
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#pragma warning disable CA1416
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Image image = Image.FromFile(fileHolder.FullName);
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(int componentsX, int componentsY) = image.Width < image.Height ? (4, 3) : (3, 4);
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ReadOnlySpan<char> blurHash = System.Drawing.BlurHash.BlurHasher.Encode(image, componentsX, componentsY);
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image.Dispose();
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#pragma warning restore CA1416
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result = blurHash.ToString();
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return result;
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}
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string? IBlurHasher.GetFile(FileHolder fileHolder)
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{
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string? result;
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string directory = Shared.Models.Stateless.Methods.IDirectory.GetDirectory(fileHolder.Name, length: 2);
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result = !int.TryParse(directory, out int directoryIndex) ? null : Path.Combine(_JsonGroups["{}"][directoryIndex], $"{fileHolder.Name}.csv");
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return result;
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}
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string IBlurHasher.EncodeAndSave(FileHolder fileHolder)
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{
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string? file;
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string result;
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int actualByte;
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string extension = ".png";
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IBlurHasher blurHasher = this;
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file = blurHasher.GetFile(fileHolder);
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if (file is null)
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throw new NullReferenceException(nameof(file));
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#pragma warning disable CA1416
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Image image = Image.FromFile(fileHolder.FullName);
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int outputWidth = (int)(image.Width * .25);
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int outputHeight = (int)(image.Height * .25);
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(int componentsX, int componentsY) = image.Width < image.Height ? (4, 3) : (3, 4);
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ReadOnlySpan<char> blurHash = System.Drawing.BlurHash.BlurHasher.Encode(image, componentsX, componentsY);
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using Image actualImage = System.Drawing.BlurHash.BlurHasher.Decode(blurHash, outputWidth, outputHeight);
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result = blurHash.ToString();
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byte[] blurHashBytes = Encoding.UTF8.GetBytes(result);
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string joined = string.Join(string.Empty, blurHashBytes.Select(l => l.ToString("000")));
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string fileNameWithoutExtension = $"{componentsX}x{componentsY}-{outputWidth}x{outputHeight}-{joined}";
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string contents = string.Concat(result, Environment.NewLine, fileNameWithoutExtension, Environment.NewLine, extension);
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_ = Shared.Models.Stateless.Methods.IPath.WriteAllText(file, contents, updateDateWhenMatches: false, compareBeforeWrite: true, updateToWhenMatches: null);
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string directory = Shared.Models.Stateless.Methods.IDirectory.GetDirectory(joined, length: 2);
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if (int.TryParse(directory, out int directoryIndex))
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{
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file = Path.Combine(_JsonGroups["()"][directoryIndex], $"{fileNameWithoutExtension}{extension}");
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if (!File.Exists(file))
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{
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try
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{
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using FileStream fileStream = new(file, FileMode.CreateNew);
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actualImage.Save(fileStream, System.Drawing.Imaging.ImageFormat.Png);
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_ = fileStream.Seek(0, SeekOrigin.Begin);
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actualByte = fileStream.ReadByte();
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while (actualByte > -1)
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actualByte = fileStream.ReadByte();
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}
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catch (Exception) { }
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}
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}
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image.Dispose();
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#pragma warning restore CA1416
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result = blurHash.ToString();
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return result;
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}
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} |