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using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Model.Entities;
using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Model.Logging;
namespace MediaBrowser.Controller.Providers.MediaInfo
{
/// <summary>
/// Uses ffmpeg to create video images
/// </summary>
public class FFMpegAudioImageProvider : BaseFFMpegImageProvider<Audio>
{
public FFMpegAudioImageProvider(ILogManager logManager, IServerConfigurationManager configurationManager) : base(logManager, configurationManager)
{
}
/// <summary>
/// The true task result
/// </summary>
protected static readonly Task<bool> TrueTaskResult = Task.FromResult(true);
/// <summary>
/// Fetches metadata and returns true or false indicating if any work that requires persistence was done
/// </summary>
/// <param name="item">The item.</param>
/// <param name="force">if set to <c>true</c> [force].</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{System.Boolean}.</returns>
public override Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken)
{
var audio = (Audio)item;
if (string.IsNullOrEmpty(audio.PrimaryImagePath))
{
// First try to use the parent's image
audio.PrimaryImagePath = audio.ResolveArgs.Parent.PrimaryImagePath;
// If it's still empty see if there's an embedded image
if (string.IsNullOrEmpty(audio.PrimaryImagePath))
{
if (audio.MediaStreams != null && audio.MediaStreams.Any(s => s.Type == MediaStreamType.Video))
{
var filename = item.Id + "_" + item.DateModified.Ticks + "_primary";
var path = Kernel.Instance.FFMpegManager.AudioImageCache.GetResourcePath(filename, ".jpg");
if (!Kernel.Instance.FFMpegManager.AudioImageCache.ContainsFilePath(path))
{
return ExtractImage(audio, path, cancellationToken);
}
// Image is already in the cache
audio.PrimaryImagePath = path;
}
}
}
SetLastRefreshed(item, DateTime.UtcNow);
return TrueTaskResult;
}
/// <summary>
/// Extracts the image.
/// </summary>
/// <param name="audio">The audio.</param>
/// <param name="path">The path.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{System.Boolean}.</returns>
private async Task<bool> ExtractImage(Audio audio, string path, CancellationToken cancellationToken)
{
var success = await Kernel.Instance.FFMpegManager.ExtractImage(audio, path, cancellationToken).ConfigureAwait(false);
if (success)
{
audio.PrimaryImagePath = path;
SetLastRefreshed(audio, DateTime.UtcNow);
}
else
{
SetLastRefreshed(audio, DateTime.UtcNow, ProviderRefreshStatus.Failure);
}
return true;
}
}
}
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