mirror of
https://github.com/jellyfin/jellyfin.git
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148 lines
5.2 KiB
C#
148 lines
5.2 KiB
C#
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using MediaBrowser.Common.IO;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.Photos
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{
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public static class DynamicImageHelpers
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{
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public static async Task<Image> GetThumbCollage(List<string> files,
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IFileSystem fileSystem,
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int width,
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int height)
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{
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if (files.Count < 3)
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{
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return await GetSingleImage(files, fileSystem).ConfigureAwait(false);
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}
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const int rows = 1;
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const int cols = 3;
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int cellWidth = 2 * (width / 3);
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int cellHeight = height;
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var index = 0;
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var img = new Bitmap(width, height, PixelFormat.Format32bppPArgb);
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using (var graphics = Graphics.FromImage(img))
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{
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graphics.CompositingQuality = CompositingQuality.HighQuality;
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graphics.SmoothingMode = SmoothingMode.HighQuality;
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graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
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graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
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graphics.CompositingMode = CompositingMode.SourceCopy;
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for (var row = 0; row < rows; row++)
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{
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for (var col = 0; col < cols; col++)
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{
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var x = col * (cellWidth / 2);
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var y = row * cellHeight;
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if (files.Count > index)
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{
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using (var fileStream = fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
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{
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using (var memoryStream = new MemoryStream())
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{
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await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
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memoryStream.Position = 0;
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using (var imgtemp = Image.FromStream(memoryStream, true, false))
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{
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graphics.DrawImage(imgtemp, x, y, cellWidth, cellHeight);
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}
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}
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}
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}
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index++;
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}
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}
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}
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return img;
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}
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public static async Task<Image> GetSquareCollage(List<string> files,
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IFileSystem fileSystem,
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int size)
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{
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if (files.Count < 4)
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{
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return await GetSingleImage(files, fileSystem).ConfigureAwait(false);
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}
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const int rows = 2;
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const int cols = 2;
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int singleSize = size / 2;
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var index = 0;
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var img = new Bitmap(size, size, PixelFormat.Format32bppPArgb);
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using (var graphics = Graphics.FromImage(img))
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{
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graphics.CompositingQuality = CompositingQuality.HighQuality;
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graphics.SmoothingMode = SmoothingMode.HighQuality;
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graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
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graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
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graphics.CompositingMode = CompositingMode.SourceCopy;
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for (var row = 0; row < rows; row++)
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{
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for (var col = 0; col < cols; col++)
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{
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var x = col * singleSize;
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var y = row * singleSize;
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using (var fileStream = fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
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{
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using (var memoryStream = new MemoryStream())
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{
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await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
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memoryStream.Position = 0;
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using (var imgtemp = Image.FromStream(memoryStream, true, false))
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{
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graphics.DrawImage(imgtemp, x, y, singleSize, singleSize);
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}
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}
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}
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index++;
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}
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}
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}
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return img;
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}
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private static Task<Image> GetSingleImage(List<string> files, IFileSystem fileSystem)
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{
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return GetImage(files[0], fileSystem);
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}
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private static async Task<Image> GetImage(string file, IFileSystem fileSystem)
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{
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using (var fileStream = fileSystem.GetFileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, true))
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{
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var memoryStream = new MemoryStream();
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await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
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memoryStream.Position = 0;
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return Image.FromStream(memoryStream, true, false);
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}
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}
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}
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}
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