/// <summary>
/// Starts playback based on the preferred URI of the supplied track.
///
/// Note that only remote or app-local URIs can directly be used as
/// the Source of the underlying MediaElement. If the URI points to
/// an non-app-local file path, we need to supply a FileStream as the
/// MediaElement Source instead of a URI.
///
/// The app furthermore needs to have been assigned permissions
/// to access the local source of the track, if any. An exception
/// is thrown if that is not the case.
///
/// </summary>
/// <param name="track">track to play</param>
public async Task SetTrack(MusicItem track)
{
DisposeNullifyAndSuppress(sourceStream);
// check local file availability
latestTrack = track;
var maybeLocalUri = await MultiFolderLibrary.Instance.LocalUriIfExists(track);
Uri sourceUri = maybeLocalUri != null ? maybeLocalUri : track.Source;
try {
var file = await StoreFileUtils.GetFile(sourceUri);
if (file != null)
{
// Bugfix: setting an ms-appdata URI directly to the Source when
// the music source is remote sometimes throws an exception about Metadata, so we avoid that.
// The identical ms-appdata URI seems to work if the music source is local.
// The root cause is unresolved atm.
await SetSource(file);
}
else
{
Player.Source = sourceUri;
}
} catch (FileNotFoundException) {
// StoreFileUtils.GetFile throws FNFE if the file has special characters such as scandics (...)
// even if it exists, so this is a bugfix for now
Player.Source = track.Source;
}
// sets universal media control meta data
MediaControl.TrackName = Utils.EmptyIfNull(track.Name);
MediaControl.ArtistName = Utils.EmptyIfNull(track.Artist);
}
public async Task <StorageFile> FileTo(string path)
{
var rootFolder = FileUtils.Folder;
var destPath = StoreFileUtils.WindowsSeparators(path);
// todo: Change ReplaceExisting to Fail, check existence before
return(await rootFolder.CreateFileAsync(destPath, CreationCollisionOption.ReplaceExisting));
}
public StoreDownloader(StoreFileUtils fileUtils)
{
FileUtils = fileUtils;
ActiveDownloads = new ObservableCollection <BindableDownloadOperation>();
Cts = new CancellationTokenSource();
CancelAllDownloads = new UnitCommand(CancelAll);
ActiveDownloads.CollectionChanged += (s, e) => {
OnPropertyChanged("IsDownloadsEmpty");
};
}
public static async Task <StorageFile> GetFile(MusicItem track)
{
var localUri = await MultiFolderLibrary.Instance.LocalUriIfExists(track);
if (localUri == null)
{
return(null);
}
return(await StoreFileUtils.GetFile(localUri));
}
public async Task DownloadDiscoGsCover()
{
var service = StoreCoverService.Instance;
var localCoverUri = await service.GetOrDownloadCover("Iron Maiden", "Powerslave");
Assert.IsNotNull(localCoverUri);
StorageFile file = await StoreFileUtils.GetFile(localCoverUri);
var size = await file.Size();
Assert.AreEqual(40407u, size);
}
//public static Task<TimeSpan> StreamDuration(this MediaElement element, Stream stream) {
// using(var stream = await file.OpenReadAsync()) {
// return element.Duration(stream, (e, s) => e.SetSource(s, s.ContentType));
// }
//}
public static async Task <TimeSpan> UriDuration(this MediaElement element, Uri uri)
{
var file = await StoreFileUtils.GetFile(uri);
if (file != null)
{
return(await element.FileDuration(file));
}
else
{
return(await element.Duration(uri, (e, u) => e.Source = u));
}
}
//public override Task<Stream> OpenStreamIfExists(MusicItem track) {
// return FileUtil.OpenStreamIfExists(track.Path);
//}
public StoreFolderLocalLibrary(StorageFolder rootFolder)
: base(rootFolder)
{
BaseMusicPath = "";
fileUtils = new StoreFileUtils(rootFolder);
}
public StoreDownloader(StoreFileUtils fileUtils, string username, string password)
: this(fileUtils) {
}