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jellyfin/MediaBrowser.Api/HttpHandlers/ImageHandler.cs

258 lines
7.1 KiB

using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using MediaBrowser.Common.Logging;
using MediaBrowser.Common.Net;
using MediaBrowser.Common.Net.Handlers;
using MediaBrowser.Controller;
using MediaBrowser.Model.Entities;
namespace MediaBrowser.Api.HttpHandlers
{
public class ImageHandler : BaseHandler
{
private string _ImagePath = null;
private async Task<string> GetImagePath()
{
if (_ImagePath == null)
{
_ImagePath = await DiscoverImagePath();
}
return _ImagePath;
}
private async Task<string> DiscoverImagePath()
{
string personName = QueryString["personname"];
if (!string.IsNullOrEmpty(personName))
{
return (await Kernel.Instance.ItemController.GetPerson(personName).ConfigureAwait(false)).PrimaryImagePath;
}
string genreName = QueryString["genre"];
if (!string.IsNullOrEmpty(genreName))
{
return (await Kernel.Instance.ItemController.GetGenre(genreName).ConfigureAwait(false)).PrimaryImagePath;
}
string year = QueryString["year"];
if (!string.IsNullOrEmpty(year))
{
return (await Kernel.Instance.ItemController.GetYear(int.Parse(year)).ConfigureAwait(false)).PrimaryImagePath;
}
string studio = QueryString["studio"];
if (!string.IsNullOrEmpty(studio))
{
return (await Kernel.Instance.ItemController.GetStudio(studio).ConfigureAwait(false)).PrimaryImagePath;
}
BaseItem item = ApiService.GetItemById(QueryString["id"]);
string imageIndex = QueryString["index"];
int index = string.IsNullOrEmpty(imageIndex) ? 0 : int.Parse(imageIndex);
return GetImagePathFromTypes(item, ImageType, index);
}
private Stream _SourceStream = null;
private async Task<Stream> GetSourceStream()
{
await EnsureSourceStream().ConfigureAwait(false);
return _SourceStream;
}
private bool _SourceStreamEnsured = false;
private async Task EnsureSourceStream()
{
if (!_SourceStreamEnsured)
{
try
{
_SourceStream = File.OpenRead(await GetImagePath().ConfigureAwait(false));
}
catch (FileNotFoundException ex)
{
StatusCode = 404;
Logger.LogException(ex);
}
catch (DirectoryNotFoundException ex)
{
StatusCode = 404;
Logger.LogException(ex);
}
catch (UnauthorizedAccessException ex)
{
StatusCode = 403;
Logger.LogException(ex);
}
finally
{
_SourceStreamEnsured = true;
}
}
}
public async override Task<string> GetContentType()
{
await EnsureSourceStream().ConfigureAwait(false);
if (await GetSourceStream().ConfigureAwait(false) == null)
{
return null;
}
return MimeTypes.GetMimeType(await GetImagePath().ConfigureAwait(false));
}
public override TimeSpan CacheDuration
{
get
{
return TimeSpan.FromDays(365);
}
}
protected async override Task<DateTime?> GetLastDateModified()
{
await EnsureSourceStream().ConfigureAwait(false);
if (await GetSourceStream().ConfigureAwait(false) == null)
{
return null;
}
return File.GetLastWriteTime(await GetImagePath().ConfigureAwait(false));
}
private int? Height
{
get
{
string val = QueryString["height"];
if (string.IsNullOrEmpty(val))
{
return null;
}
return int.Parse(val);
}
}
private int? Width
{
get
{
string val = QueryString["width"];
if (string.IsNullOrEmpty(val))
{
return null;
}
return int.Parse(val);
}
}
private int? MaxHeight
{
get
{
string val = QueryString["maxheight"];
if (string.IsNullOrEmpty(val))
{
return null;
}
return int.Parse(val);
}
}
private int? MaxWidth
{
get
{
string val = QueryString["maxwidth"];
if (string.IsNullOrEmpty(val))
{
return null;
}
return int.Parse(val);
}
}
private int? Quality
{
get
{
string val = QueryString["quality"];
if (string.IsNullOrEmpty(val))
{
return null;
}
return int.Parse(val);
}
}
private ImageType ImageType
{
get
{
string imageType = QueryString["type"];
if (string.IsNullOrEmpty(imageType))
{
return ImageType.Primary;
}
return (ImageType)Enum.Parse(typeof(ImageType), imageType, true);
}
}
protected override async Task WriteResponseToOutputStream(Stream stream)
{
ImageProcessor.ProcessImage(await GetSourceStream().ConfigureAwait(false), stream, Width, Height, MaxWidth, MaxHeight, Quality);
}
private string GetImagePathFromTypes(BaseItem item, ImageType imageType, int imageIndex)
{
if (imageType == ImageType.Logo)
{
return item.LogoImagePath;
}
else if (imageType == ImageType.Backdrop)
{
return item.BackdropImagePaths.ElementAt(imageIndex);
}
else if (imageType == ImageType.Banner)
{
return item.BannerImagePath;
}
else if (imageType == ImageType.Art)
{
return item.ArtImagePath;
}
else if (imageType == ImageType.Thumbnail)
{
return item.ThumbnailImagePath;
}
else
{
return item.PrimaryImagePath;
}
}
}
}