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using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Playlists;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Drawing;
using MediaBrowser.Model.Entities;
using MoreLinq;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Playlists
{
public class PlaylistImageEnhancer : IImageEnhancer
{
private readonly IFileSystem _fileSystem;
public PlaylistImageEnhancer(IFileSystem fileSystem)
{
_fileSystem = fileSystem;
}
public bool Supports(IHasImages item, ImageType imageType)
{
return imageType == ImageType.Primary && item is Playlist;
}
public MetadataProviderPriority Priority
{
get { return MetadataProviderPriority.First; }
}
private List<BaseItem> GetItemsWithImages(IHasImages item)
{
var playlist = (Playlist)item;
var items = playlist.GetManageableItems()
.Select(i =>
{
var subItem = i.Item2;
var episode = subItem as Episode;
if (episode != null)
{
var series = episode.Series;
if (series != null && series.HasImage(ImageType.Primary))
{
return series;
}
}
if (subItem.HasImage(ImageType.Primary))
{
return subItem;
}
var parent = subItem.Parent;
if (parent != null && parent.HasImage(ImageType.Primary))
{
if (parent is MusicAlbum)
{
return parent;
}
}
return null;
})
.Where(i => i != null)
.DistinctBy(i => i.Id)
.ToList();
// Rotate the images no more than once per day
var random = new Random(DateTime.Now.DayOfYear).Next();
return items
.OrderBy(i => random - items.IndexOf(i))
.Take(4)
.OrderBy(i => i.Name)
.ToList();
}
private const string Version = "3";
public string GetConfigurationCacheKey(List<BaseItem> items)
{
return Version + "_" + string.Join(",", items.Select(i => i.Id.ToString("N")).ToArray());
}
public string GetConfigurationCacheKey(IHasImages item, ImageType imageType)
{
var items = GetItemsWithImages(item);
return GetConfigurationCacheKey(items);
}
private const int ImageSize = 800;
public ImageSize GetEnhancedImageSize(IHasImages item, ImageType imageType, int imageIndex, ImageSize originalImageSize)
{
var items = GetItemsWithImages(item);
if (items.Count == 0)
{
return originalImageSize;
}
return new ImageSize
{
Height = ImageSize,
Width = ImageSize
};
}
public async Task<Image> EnhanceImageAsync(IHasImages item, Image originalImage, ImageType imageType, int imageIndex)
{
var items = GetItemsWithImages(item);
if (items.Count == 0)
{
return originalImage;
}
var img = await GetCollage(items).ConfigureAwait(false);
using (originalImage)
{
return img;
}
}
private Task<Image> GetCollage(List<BaseItem> items)
{
return GetCollage(items.Select(i => i.GetImagePath(ImageType.Primary)).ToList());
}
private async Task<Image> GetCollage(List<string> files)
{
if (files.Count < 4)
{
return await GetSingleImage(files).ConfigureAwait(false);
}
const int rows = 2;
const int cols = 2;
const int singleSize = ImageSize / 2;
var index = 0;
var img = new Bitmap(ImageSize, ImageSize, PixelFormat.Format32bppPArgb);
using (var graphics = Graphics.FromImage(img))
{
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingMode = CompositingMode.SourceCopy;
for (var row = 0; row < rows; row++)
{
for (var col = 0; col < cols; col++)
{
var x = col * singleSize;
var y = row * singleSize;
using (var fileStream = _fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
using (var memoryStream = new MemoryStream())
{
await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
memoryStream.Position = 0;
using (var imgtemp = Image.FromStream(memoryStream, true, false))
{
graphics.DrawImage(imgtemp, x, y, singleSize, singleSize);
}
}
}
index++;
}
}
}
return img;
}
private Task<Image> GetSingleImage(List<string> files)
{
return GetImage(files[0]);
}
private async Task<Image> GetImage(string file)
{
using (var fileStream = _fileSystem.GetFileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
var memoryStream = new MemoryStream();
await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
memoryStream.Position = 0;
return Image.FromStream(memoryStream, true, false);
}
}
}
}
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