/// <summary>
/// Extracts the image.
/// </summary>
/// <param name="video">The video.</param>
/// <param name="path">The path.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task ExtractImageInternal(Video video, string path, CancellationToken cancellationToken)
{
var isoMount = await MountIsoIfNeeded(video, 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 = video.VideoType != VideoType.Dvd && video.RunTimeTicks.HasValue &&
video.RunTimeTicks.Value > 0
? TimeSpan.FromTicks(Convert.ToInt64(video.RunTimeTicks.Value * .1))
: TimeSpan.FromSeconds(10);
InputType type;
var inputPath = MediaEncoderHelpers.GetInputArgument(video, isoMount, out type);
await _mediaEncoder.ExtractImage(inputPath, type, video.Video3DFormat, imageOffset, path, cancellationToken).ConfigureAwait(false);
video.PrimaryImagePath = path;
}
finally
{
if (isoMount != null)
{
isoMount.Dispose();
}
}
}
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);
InputType type;
var inputPath = MediaEncoderHelpers.GetInputArgument(item.Path, item.LocationType == LocationType.Remote, item.VideoType, item.IsoType, isoMount, item.PlayableStreamFileNames, out type);
var stream = await _mediaEncoder.ExtractImage(inputPath, type, false, item.Video3DFormat, imageOffset, cancellationToken).ConfigureAwait(false);
return(new DynamicImageResponse
{
Format = ImageFormat.Jpg,
HasImage = true,
Stream = stream
});
}
finally
{
if (isoMount != null)
{
isoMount.Dispose();
}
}
}
/// <summary>
/// Creates the images for song.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.InvalidOperationException">Can't extract an image unless the audio file has an embedded image.</exception>
private async Task CreateImagesForSong(Audio item, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var album = item.Parent as MusicAlbum;
var filename = item.Album ?? string.Empty;
filename += item.Artists.FirstOrDefault() ?? string.Empty;
filename += album == null?item.Id.ToString("N") + item.DateModified.Ticks : album.Id.ToString("N") + album.DateModified.Ticks;
var path = ImageCache.GetResourcePath(filename + "_primary", ".jpg");
if (!File.Exists(path))
{
var semaphore = GetLock(path);
// Acquire a lock
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
// Check again
if (!File.Exists(path))
{
try
{
var parentPath = Path.GetDirectoryName(path);
if (!Directory.Exists(parentPath))
{
Directory.CreateDirectory(parentPath);
}
await _mediaEncoder.ExtractImage(new[] { item.Path }, InputType.AudioFile, null, null, path, cancellationToken).ConfigureAwait(false);
}
finally
{
semaphore.Release();
}
}
else
{
semaphore.Release();
}
}
// Image is already in the cache
item.PrimaryImagePath = path;
}
public async Task <DynamicImageResponse> GetImage(Audio item, CancellationToken cancellationToken)
{
var path = GetAudioImagePath(item);
if (!File.Exists(path))
{
var semaphore = GetLock(path);
// Acquire a lock
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
// Check again in case it was saved while waiting for the lock
if (!File.Exists(path))
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
using (var stream = await _mediaEncoder.ExtractImage(new[] { item.Path }, InputType.File, true, null, null, cancellationToken).ConfigureAwait(false))
{
using (var fileStream = _fileSystem.GetFileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, true))
{
await stream.CopyToAsync(fileStream).ConfigureAwait(false);
}
}
}
}
finally
{
semaphore.Release();
}
}
return(new DynamicImageResponse
{
HasImage = true,
Path = path
});
}
public async Task <bool> RefreshChapterImages(ChapterImageRefreshOptions options, CancellationToken cancellationToken)
{
var extractImages = options.ExtractImages;
var video = options.Video;
var chapters = options.Chapters;
var saveChapters = options.SaveChapters;
if (!IsEligibleForChapterImageExtraction(video))
{
extractImages = false;
}
var success = true;
var changesMade = false;
var runtimeTicks = video.RunTimeTicks ?? 0;
var currentImages = GetSavedChapterImages(video);
foreach (var chapter in chapters)
{
if (chapter.StartPositionTicks >= runtimeTicks)
{
_logger.Info("Stopping chapter extraction for {0} because a chapter was found with a position greater than the runtime.", video.Name);
break;
}
var path = GetChapterImagePath(video, chapter.StartPositionTicks);
if (!currentImages.Contains(path, StringComparer.OrdinalIgnoreCase))
{
if (extractImages)
{
if (video.VideoType == VideoType.HdDvd || video.VideoType == VideoType.Iso)
{
continue;
}
if (video.VideoType == VideoType.BluRay)
{
// Can only extract reliably on single file blurays
if (video.PlayableStreamFileNames == null || video.PlayableStreamFileNames.Count != 1)
{
continue;
}
}
// Add some time for the first chapter to make sure we don't end up with a black image
var time = chapter.StartPositionTicks == 0 ? TimeSpan.FromTicks(Math.Min(FirstChapterTicks, video.RunTimeTicks ?? 0)) : TimeSpan.FromTicks(chapter.StartPositionTicks);
InputType type;
var inputPath = MediaEncoderHelpers.GetInputArgument(video.Path, false, video.VideoType, video.IsoType, null, video.PlayableStreamFileNames, out type);
try
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
using (var stream = await _encoder.ExtractImage(inputPath, type, false, video.Video3DFormat, time, cancellationToken).ConfigureAwait(false))
{
using (var fileStream = _fileSystem.GetFileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, true))
{
await stream.CopyToAsync(fileStream).ConfigureAwait(false);
}
}
chapter.ImagePath = path;
changesMade = true;
}
catch
{
success = false;
break;
}
}
else if (!string.IsNullOrEmpty(chapter.ImagePath))
{
chapter.ImagePath = null;
changesMade = true;
}
}
else if (!string.Equals(path, chapter.ImagePath, StringComparison.OrdinalIgnoreCase))
{
chapter.ImagePath = path;
changesMade = true;
}
}
if (saveChapters && changesMade)
{
await _itemRepo.SaveChapters(video.Id, chapters, cancellationToken).ConfigureAwait(false);
}
DeleteDeadImages(currentImages, chapters);
return(success);
}
/// <summary>
/// Extracts the chapter images.
/// </summary>
/// <param name="video">The video.</param>
/// <param name="chapters">The chapters.</param>
/// <param name="extractImages">if set to <c>true</c> [extract images].</param>
/// <param name="saveChapters">if set to <c>true</c> [save chapters].</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public async Task <bool> PopulateChapterImages(Video video, List <ChapterInfo> chapters, bool extractImages, bool saveChapters, CancellationToken cancellationToken)
{
// Can't extract images if there are no video streams
if (video.MediaStreams == null || video.MediaStreams.All(m => m.Type != MediaStreamType.Video))
{
return(true);
}
var success = true;
var changesMade = false;
var runtimeTicks = video.RunTimeTicks ?? 0;
foreach (var chapter in chapters)
{
if (chapter.StartPositionTicks >= runtimeTicks)
{
_logger.Info("Stopping chapter extraction for {0} because a chapter was found with a position greater than the runtime.", video.Name);
break;
}
var filename = video.Path + "_" + video.DateModified.Ticks + "_" + chapter.StartPositionTicks;
var path = VideoImageCache.GetResourcePath(filename, ".jpg");
if (!File.Exists(path))
{
if (extractImages)
{
if (video.VideoType == VideoType.HdDvd || video.VideoType == VideoType.Iso)
{
continue;
}
if (video.VideoType == VideoType.BluRay)
{
// Can only extract reliably on single file blurays
if (video.PlayableStreamFileNames == null || video.PlayableStreamFileNames.Count != 1)
{
continue;
}
}
// Add some time for the first chapter to make sure we don't end up with a black image
var time = chapter.StartPositionTicks == 0 ? TimeSpan.FromTicks(Math.Min(FirstChapterTicks, video.RunTimeTicks ?? 0)) : TimeSpan.FromTicks(chapter.StartPositionTicks);
InputType type;
var inputPath = MediaEncoderHelpers.GetInputArgument(video, null, out type);
try
{
var parentPath = Path.GetDirectoryName(path);
if (!Directory.Exists(parentPath))
{
Directory.CreateDirectory(parentPath);
}
await _encoder.ExtractImage(inputPath, type, video.Video3DFormat, time, path, cancellationToken).ConfigureAwait(false);
chapter.ImagePath = path;
changesMade = true;
}
catch
{
success = false;
break;
}
}
}
else if (!string.Equals(path, chapter.ImagePath, StringComparison.OrdinalIgnoreCase))
{
chapter.ImagePath = path;
changesMade = true;
}
}
if (saveChapters && changesMade)
{
await _itemRepo.SaveChapters(video.Id, chapters, cancellationToken).ConfigureAwait(false);
}
return(success);
}
