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using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Drawing;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.MediaInfo;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Providers.MediaInfo
{
public class VideoImageProvider : IDynamicImageProvider, IHasItemChangeMonitor, IHasOrder
{
private readonly IIsoManager _isoManager;
private readonly IMediaEncoder _mediaEncoder;
private readonly IServerConfigurationManager _config;
public VideoImageProvider(IIsoManager isoManager, IMediaEncoder mediaEncoder, IServerConfigurationManager config)
{
_isoManager = isoManager;
_mediaEncoder = mediaEncoder;
_config = config;
}
/// <summary>
/// The null mount task result
/// </summary>
protected readonly Task<IIsoMount> NullMountTaskResult = Task.FromResult<IIsoMount>(null);
/// <summary>
/// Mounts the iso if needed.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{IIsoMount}.</returns>
protected Task<IIsoMount> MountIsoIfNeeded(Video item, CancellationToken cancellationToken)
{
if (item.VideoType == VideoType.Iso)
{
return _isoManager.Mount(item.Path, cancellationToken);
}
return NullMountTaskResult;
}
public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
{
return new List<ImageType> { ImageType.Primary };
}
public Task<DynamicImageResponse> GetImage(IHasImages item, ImageType type, CancellationToken cancellationToken)
{
var video = (Video)item;
// No support for this
if (video.VideoType == VideoType.HdDvd || video.IsPlaceHolder)
{
return Task.FromResult(new DynamicImageResponse { HasImage = false });
}
// Can't extract from iso's if we weren't unable to determine iso type
if (video.VideoType == VideoType.Iso && !video.IsoType.HasValue)
{
return Task.FromResult(new DynamicImageResponse { HasImage = false });
}
// Can't extract if we didn't find a video stream in the file
if (!video.DefaultVideoStreamIndex.HasValue)
{
return Task.FromResult(new DynamicImageResponse { HasImage = false });
}
return GetVideoImage(video, cancellationToken);
}
public async Task<DynamicImageResponse> GetVideoImage(Video item, CancellationToken cancellationToken)
{
var isoMount = await MountIsoIfNeeded(item, cancellationToken).ConfigureAwait(false);
try
{
// If we know the duration, grab it from 10% into the video. Otherwise just 10 seconds in.
// Always use 10 seconds for dvd because our duration could be out of whack
var imageOffset = item.VideoType != VideoType.Dvd && item.RunTimeTicks.HasValue &&
item.RunTimeTicks.Value > 0
? TimeSpan.FromTicks(Convert.ToInt64(item.RunTimeTicks.Value * .1))
: TimeSpan.FromSeconds(10);
var protocol = item.LocationType == LocationType.Remote
? MediaProtocol.Http
: MediaProtocol.File;
var inputPath = MediaEncoderHelpers.GetInputArgument(item.Path, protocol, isoMount, item.PlayableStreamFileNames);
var stream = await _mediaEncoder.ExtractVideoImage(inputPath, protocol, item.Video3DFormat, imageOffset, cancellationToken).ConfigureAwait(false);
return new DynamicImageResponse
{
Format = ImageFormat.Jpg,
HasImage = true,
Stream = stream
};
}
finally
{
if (isoMount != null)
{
isoMount.Dispose();
}
}
}
public string Name
{
get { return "Screen Grabber"; }
}
public bool Supports(IHasImages item)
{
var video = item as Video;
return item.LocationType == LocationType.FileSystem && video != null && !video.IsPlaceHolder && !video.IsShortcut && !video.IsArchive;
}
public int Order
{
get
{
// Make sure this comes after internet image providers
return 100;
}
}
public bool HasChanged(IHasMetadata item, MetadataStatus status, IDirectoryService directoryService)
{
if (status.ItemDateModified.HasValue)
{
if (status.ItemDateModified.Value != item.DateModified)
{
return true;
}
}
return false;
}
}
}
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