jellyfin-server/Emby.Drawing.ImageMagick/StripCollageBuilder.cs

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using ImageMagickSharp;
using MediaBrowser.Common.Configuration;
using System;
using System.Collections.Generic;
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using MediaBrowser.Common.IO;
using MediaBrowser.Controller.IO;
using MediaBrowser.Model.IO;
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namespace Emby.Drawing.ImageMagick
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{
public class StripCollageBuilder
{
private readonly IApplicationPaths _appPaths;
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private readonly IFileSystem _fileSystem;
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public StripCollageBuilder(IApplicationPaths appPaths, IFileSystem fileSystem)
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{
_appPaths = appPaths;
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_fileSystem = fileSystem;
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}
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public void BuildPosterCollage(List<string> paths, string outputPath, int width, int height)
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{
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using (var wand = BuildPosterCollageWand(paths, width, height))
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{
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wand.SaveImage(outputPath);
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}
}
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public void BuildSquareCollage(List<string> paths, string outputPath, int width, int height)
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{
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using (var wand = BuildSquareCollageWand(paths, width, height))
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{
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wand.SaveImage(outputPath);
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}
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}
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public void BuildThumbCollage(List<string> paths, string outputPath, int width, int height)
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{
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using (var wand = BuildThumbCollageWand(paths, width, height))
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{
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wand.SaveImage(outputPath);
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}
}
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private MagickWand BuildPosterCollageWand(List<string> paths, int width, int height)
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{
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var inputPaths = ImageHelpers.ProjectPaths(paths, 3);
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using (var wandImages = new MagickWand(inputPaths.ToArray()))
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{
var wand = new MagickWand(width, height);
wand.OpenImage("gradient:#111111-#111111");
using (var draw = new DrawingWand())
{
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var iSlice = Convert.ToInt32(width * 0.3);
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int iTrans = Convert.ToInt32(height * .25);
int iHeight = Convert.ToInt32(height * .65);
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var horizontalImagePadding = Convert.ToInt32(width * 0.0366);
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foreach (var element in wandImages.ImageList)
{
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using (var blackPixelWand = new PixelWand(ColorName.Black))
{
int iWidth = (int)Math.Abs(iHeight * element.Width / element.Height);
element.Gravity = GravityType.CenterGravity;
element.BackgroundColor = blackPixelWand;
element.ResizeImage(iWidth, iHeight, FilterTypes.LanczosFilter);
int ix = (int)Math.Abs((iWidth - iSlice) / 2);
element.CropImage(iSlice, iHeight, ix, 0);
element.ExtentImage(iSlice, iHeight, 0 - horizontalImagePadding, 0);
}
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}
wandImages.SetFirstIterator();
using (var wandList = wandImages.AppendImages())
{
wandList.CurrentImage.TrimImage(1);
using (var mwr = wandList.CloneMagickWand())
{
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using (var blackPixelWand = new PixelWand(ColorName.Black))
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{
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using (var greyPixelWand = new PixelWand(ColorName.Grey70))
{
mwr.CurrentImage.ResizeImage(wandList.CurrentImage.Width, (wandList.CurrentImage.Height / 2), FilterTypes.LanczosFilter, 1);
mwr.CurrentImage.FlipImage();
mwr.CurrentImage.AlphaChannel = AlphaChannelType.DeactivateAlphaChannel;
mwr.CurrentImage.ColorizeImage(blackPixelWand, greyPixelWand);
using (var mwg = new MagickWand(wandList.CurrentImage.Width, iTrans))
{
mwg.OpenImage("gradient:black-none");
var verticalSpacing = Convert.ToInt32(height * 0.01111111111111111111111111111111);
mwr.CurrentImage.CompositeImage(mwg, CompositeOperator.CopyOpacityCompositeOp, 0, verticalSpacing);
wandList.AddImage(mwr);
int ex = (int)(wand.CurrentImage.Width - mwg.CurrentImage.Width) / 2;
wand.CurrentImage.CompositeImage(wandList.AppendImages(true), CompositeOperator.AtopCompositeOp, ex, Convert.ToInt32(height * .05));
}
}
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}
}
}
}
return wand;
}
}
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private MagickWand BuildThumbCollageWand(List<string> paths, int width, int height)
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{
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var inputPaths = ImageHelpers.ProjectPaths(paths, 4);
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using (var wandImages = new MagickWand(inputPaths.ToArray()))
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{
var wand = new MagickWand(width, height);
wand.OpenImage("gradient:#111111-#111111");
using (var draw = new DrawingWand())
{
var iSlice = Convert.ToInt32(width * 0.24125);
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int iTrans = Convert.ToInt32(height * .25);
int iHeight = Convert.ToInt32(height * .70);
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var horizontalImagePadding = Convert.ToInt32(width * 0.0125);
foreach (var element in wandImages.ImageList)
{
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using (var blackPixelWand = new PixelWand(ColorName.Black))
{
int iWidth = (int)Math.Abs(iHeight * element.Width / element.Height);
element.Gravity = GravityType.CenterGravity;
element.BackgroundColor = blackPixelWand;
element.ResizeImage(iWidth, iHeight, FilterTypes.LanczosFilter);
int ix = (int)Math.Abs((iWidth - iSlice) / 2);
element.CropImage(iSlice, iHeight, ix, 0);
element.ExtentImage(iSlice, iHeight, 0 - horizontalImagePadding, 0);
}
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}
wandImages.SetFirstIterator();
using (var wandList = wandImages.AppendImages())
{
wandList.CurrentImage.TrimImage(1);
using (var mwr = wandList.CloneMagickWand())
{
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using (var blackPixelWand = new PixelWand(ColorName.Black))
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{
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using (var greyPixelWand = new PixelWand(ColorName.Grey70))
{
mwr.CurrentImage.ResizeImage(wandList.CurrentImage.Width, (wandList.CurrentImage.Height / 2), FilterTypes.LanczosFilter, 1);
mwr.CurrentImage.FlipImage();
mwr.CurrentImage.AlphaChannel = AlphaChannelType.DeactivateAlphaChannel;
mwr.CurrentImage.ColorizeImage(blackPixelWand, greyPixelWand);
using (var mwg = new MagickWand(wandList.CurrentImage.Width, iTrans))
{
mwg.OpenImage("gradient:black-none");
var verticalSpacing = Convert.ToInt32(height * 0.01111111111111111111111111111111);
mwr.CurrentImage.CompositeImage(mwg, CompositeOperator.CopyOpacityCompositeOp, 0, verticalSpacing);
wandList.AddImage(mwr);
int ex = (int)(wand.CurrentImage.Width - mwg.CurrentImage.Width) / 2;
wand.CurrentImage.CompositeImage(wandList.AppendImages(true), CompositeOperator.AtopCompositeOp, ex, Convert.ToInt32(height * .045));
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}
}
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}
}
}
}
return wand;
}
}
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private MagickWand BuildSquareCollageWand(List<string> paths, int width, int height)
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{
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var inputPaths = ImageHelpers.ProjectPaths(paths, 4);
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var outputWand = new MagickWand(width, height, new PixelWand("none", 1));
var imageIndex = 0;
var cellWidth = width/2;
var cellHeight = height/2;
for (var x = 0; x < 2; x++)
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{
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for (var y = 0; y < 2; y++)
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{
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using (var temp = new MagickWand(inputPaths[imageIndex]))
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{
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temp.CurrentImage.ScaleImage(cellWidth, cellHeight);
// draw this image into the strip at the next position
var xPos = x*cellWidth;
var yPos = y*cellHeight;
outputWand.CurrentImage.CompositeImage(temp, CompositeOperator.OverCompositeOp, xPos, yPos);
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}
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imageIndex++;
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}
}
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return outputWand;
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}
}
}