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#pragma warning disable CA1826 // CA1826 Do not use Enumerable methods on Indexable collections.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Drawing;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.MediaInfo;
using Microsoft.Extensions.Logging;
namespace MediaBrowser.Providers.MediaInfo
{
/// <summary>
/// Uses <see cref="IMediaEncoder"/> to create still images from the main video.
/// </summary>
public class VideoImageProvider : IDynamicImageProvider, IHasOrder
{
private readonly IMediaSourceManager _mediaSourceManager;
private readonly IMediaEncoder _mediaEncoder;
private readonly ILogger<VideoImageProvider> _logger;
/// <summary>
/// Initializes a new instance of the <see cref="VideoImageProvider"/> class.
/// </summary>
/// <param name="mediaSourceManager">The media source manager for fetching item streams.</param>
/// <param name="mediaEncoder">The media encoder for capturing images.</param>
/// <param name="logger">The logger.</param>
public VideoImageProvider(IMediaSourceManager mediaSourceManager, IMediaEncoder mediaEncoder, ILogger<VideoImageProvider> logger)
{
_mediaSourceManager = mediaSourceManager;
_mediaEncoder = mediaEncoder;
_logger = logger;
}
/// <inheritdoc />
public string Name => "Screen Grabber";
/// <inheritdoc />
// Make sure this comes after internet image providers
public int Order => 100;
/// <inheritdoc />
public IEnumerable<ImageType> GetSupportedImages(BaseItem item)
{
return new[] { ImageType.Primary };
}
/// <inheritdoc />
public Task<DynamicImageResponse> GetImage(BaseItem item, ImageType type, CancellationToken cancellationToken)
{
var video = (Video)item;
// No support for these
if (video.IsPlaceHolder || video.VideoType == VideoType.Dvd)
{
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)
{
_logger.LogInformation("Skipping image extraction due to missing DefaultVideoStreamIndex for {Path}.", video.Path ?? string.Empty);
return Task.FromResult(new DynamicImageResponse { HasImage = false });
}
return GetVideoImage(video, cancellationToken);
}
private async Task<DynamicImageResponse> GetVideoImage(Video item, CancellationToken cancellationToken)
{
MediaSourceInfo mediaSource = new MediaSourceInfo
{
VideoType = item.VideoType,
IsoType = item.IsoType,
Protocol = item.PathProtocol ?? MediaProtocol.File,
};
// 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 > 0
? TimeSpan.FromTicks(item.RunTimeTicks.Value / 10)
: TimeSpan.FromSeconds(10);
var query = new MediaStreamQuery { ItemId = item.Id, Index = item.DefaultVideoStreamIndex };
var videoStream = _mediaSourceManager.GetMediaStreams(query).FirstOrDefault();
if (videoStream is null)
{
query.Type = MediaStreamType.Video;
query.Index = null;
videoStream = _mediaSourceManager.GetMediaStreams(query).FirstOrDefault();
}
if (videoStream is null)
{
_logger.LogInformation("Skipping image extraction: no video stream found for {Path}.", item.Path ?? string.Empty);
return new DynamicImageResponse { HasImage = false };
}
string extractedImagePath = await _mediaEncoder.ExtractVideoImage(item.Path, item.Container, mediaSource, videoStream, item.Video3DFormat, imageOffset, cancellationToken).ConfigureAwait(false);
return new DynamicImageResponse
{
Format = ImageFormat.Jpg,
HasImage = true,
Path = extractedImagePath,
Protocol = MediaProtocol.File
};
}
/// <inheritdoc />
public bool Supports(BaseItem item)
{
if (item.IsShortcut)
{
return false;
}
if (!item.IsFileProtocol)
{
return false;
}
return item is Video video && !video.IsPlaceHolder && video.IsCompleteMedia;
}
}
}
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