public static async Task FetchVideoThumbnailOrWaitAsync(VideoItem videoVm)
{
await VideoThumbnailFetcherSemaphoreSlim.WaitAsync();
try
{
var isChanged = await VideoLibraryManagement.GenerateThumbnail(videoVm);
if (isChanged)
await Locator.VideoLibraryVM.VideoRepository.Update(videoVm);
}
finally
{
VideoThumbnailFetcherSemaphoreSlim.Release();
}
}
// Returns false is no snapshot generation was required, true otherwise
public static async Task<Boolean> GenerateThumbnail(VideoItem videoItem)
{
if (videoItem.HasThumbnail)
return false;
try
{
if (Locator.MediaPlaybackViewModel.ContinueIndexing != null)
{
await Locator.MediaPlaybackViewModel.ContinueIndexing.Task;
Locator.MediaPlaybackViewModel.ContinueIndexing = null;
}
#if WINDOWS_PHONE_APP
if (MemoryUsageHelper.PercentMemoryUsed() > MemoryUsageHelper.MaxRamForResourceIntensiveTasks)
return false;
#endif
WriteableBitmap image = null;
StorageItemThumbnail thumb = null;
// If file is a mkv, we save the thumbnail in a VideoPic folder so we don't consume CPU and resources each launch
if (VLCFileExtensions.MFSupported.Contains(videoItem.File.FileType.ToLower()))
{
thumb = await ThumbsService.GetThumbnail(videoItem.File).ConfigureAwait(false);
}
// If MF thumbnail generation failed or wasn't supported:
if (thumb == null)
{
var res = await ThumbsService.GetScreenshot(videoItem.File).ConfigureAwait(false);
if (res == null)
return true;
image = res.Bitmap();
await App.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => videoItem.Duration = TimeSpan.FromMilliseconds(res.Length()));
}
if (thumb != null || image != null)
{
// RunAsync won't await on the lambda it receives, so we need to do it ourselves
var tcs = new TaskCompletionSource<bool>();
await App.Dispatcher.RunAsync(CoreDispatcherPriority.Low, async () =>
{
if (thumb != null)
{
image = new WriteableBitmap((int)thumb.OriginalWidth, (int)thumb.OriginalHeight);
await image.SetSourceAsync(thumb);
}
await DownloadAndSaveHelper.WriteableBitmapToStorageFile(image, videoItem.Id.ToString());
videoItem.ThumbnailPath = String.Format("{0}{1}.jpg", Strings.VideoPicFolderPath, videoItem.Id);
tcs.SetResult(true);
});
await tcs.Task;
}
videoItem.HasThumbnail = true;
return true;
}
catch (Exception ex)
{
LogHelper.Log(ex.ToString());
}
return false;
}
public static async Task AddTvShow(String name, VideoItem episode)
{
try
{
TvShow show = Locator.VideoLibraryVM.Shows.FirstOrDefault(x => x.ShowTitle == name);
if (show == null)
{
show = new TvShow(name);
await DispatchHelper.InvokeAsync(() =>
{
show.Episodes.Add(episode);
Locator.VideoLibraryVM.Shows.Add(show);
if (Locator.VideoLibraryVM.Shows.Count == 1)
Locator.VideoLibraryVM.CurrentShow = Locator.VideoLibraryVM.Shows[0];
});
}
else
{
if (show.Episodes.FirstOrDefault(x => x.Id == episode.Id) == null)
await DispatchHelper.InvokeAsync(() => show.Episodes.Add(episode));
}
}
catch (Exception e)
{
ExceptionHelper.CreateMemorizedException("VideoLibaryManagement.AddTvShow", e);
}
}
public Task Update(VideoItem video)
{
var connection = new SQLiteAsyncConnection(DbPath);
return connection.UpdateAsync(video);
}
public Task Insert(VideoItem item)
{
var conn = new SQLiteAsyncConnection(DbPath);
return conn.InsertAsync(item);
}
/// <summary>
/// Navigates to the Video Player screen with the requested file a parameter.
/// </summary>
/// <param name="file">The file to be played.</param>
/// <param name="token">Token is for files that are NOT in the sandbox, such as files taken from the filepicker from a sd card but not in the Video/Music folder.</param>
public async Task PlayVideoFile(StorageFile file, string token = null)
{
Locator.NavigationService.Go(VLCPage.VideoPlayerPage);
VideoItem videoVm = new VideoItem();
await videoVm.Initialize(file);
if (token != null)
videoVm.Token = token;
Locator.VideoVm.CurrentVideo = videoVm;
await PlaylistHelper.Play(videoVm);
}
public async Task Add(VideoItem videoItem, bool isPlayingPlaylist)
{
if (Playlist.FirstOrDefault(x => x.Path == videoItem.Path) != null) return;
Playlist.Add(videoItem);
}
