public void PropertiesTest()
{
var musicFile = new MockMusicFile(new MusicMetadata(TimeSpan.FromSeconds(33), 320), "TestFile.wma");
var item = new TranscodeItem(musicFile, "TestFile.mp3");
Assert.AreEqual(musicFile, item.Source);
Assert.AreEqual("TestFile.mp3", item.DestinationFileName);
Assert.AreEqual(0, item.Progress);
AssertHelper.PropertyChangedEvent(item, x => x.Progress, () => item.Progress = 0.5);
Assert.AreEqual(0.5, item.Progress);
Assert.IsNull(item.Error);
var exception = new InvalidOperationException("Test");
AssertHelper.PropertyChangedEvent(item, x => x.Error, () => item.Error = exception);
Assert.AreEqual(exception, item.Error);
}
public void AddRemoveTranscodeItemsTest()
{
var musicFile1 = new MockMusicFile(new MusicMetadata(TimeSpan.FromSeconds(33), 320), "TestFile1.wma");
var musicFile2 = new MockMusicFile(new MusicMetadata(TimeSpan.FromSeconds(33), 320), "TestFile2.wma");
var item1 = new TranscodeItem(musicFile1, "TestFile1.mp3");
var item2 = new TranscodeItem(musicFile1, "TestFile2.mp3");
var manager = new TranscodingManager();
Assert.IsFalse(manager.TranscodeItems.Any());
manager.AddTranscodeItem(item1);
manager.AddTranscodeItem(item2);
Assert.IsTrue(new[] { item1, item2 }.SequenceEqual(manager.TranscodeItems));
manager.RemoveTranscodeItem(item1);
Assert.AreEqual(item2, manager.TranscodeItems.Single());
}
public void TranscodeStatusTest()
{
var musicFile = new MockMusicFile(new MusicMetadata(TimeSpan.FromSeconds(33), 320), "TestFile.wma");
var item = new TranscodeItem(musicFile, "TestFile.mp3");
Assert.AreEqual(TranscodeStatus.Pending, item.TranscodeStatus);
AssertHelper.PropertyChangedEvent(item, x => x.TranscodeStatus, () =>
item.Progress = 0.01);
Assert.AreEqual(TranscodeStatus.InProgress, item.TranscodeStatus);
AssertHelper.PropertyChangedEvent(item, x => x.TranscodeStatus, () =>
item.Progress = 1);
Assert.AreEqual(TranscodeStatus.Completed, item.TranscodeStatus);
AssertHelper.PropertyChangedEvent(item, x => x.TranscodeStatus, () =>
item.Error = new InvalidOperationException());
Assert.AreEqual(TranscodeStatus.Error, item.TranscodeStatus);
}
public void RemoveTranscodeItem(TranscodeItem item)
{
transcodeItems.Remove(item);
}
public void AddTranscodeItem(TranscodeItem item)
{
transcodeItems.Add(item);
}
public void RemoveTranscodeItem(TranscodeItem item)
{
transcodeItems.Remove(item);
}
public void AddTranscodeItem(TranscodeItem item)
{
transcodeItems.Add(item);
}
private async Task TranscodeAsyncCore(TranscodeItem transcodeItem, uint bitrate, CancellationToken token)
{
await throttler.WaitAsync(token); // Throttle the transcoding
try
{
var task = transcoder.Value.TranscodeAsync(transcodeItem.Source.FileName, transcodeItem.DestinationFileName, bitrate,
token, new Progress<double>(x => transcodeItem.Progress = x / 100d));
transcodingService.RaiseTranscodingTaskCreated(transcodeItem.DestinationFileName, task);
await task;
var destinationMusicFile = musicFileContext.Create(transcodeItem.DestinationFileName);
var sourceMetadata = await transcodeItem.Source.GetMetadataAsync();
var destinationMetadata = await destinationMusicFile.GetMetadataAsync();
destinationMetadata.ApplyValuesFrom(sourceMetadata);
await musicFileContext.SaveChangesAsync(destinationMusicFile);
}
finally
{
throttler.Release();
}
}
private async void TranscodeAsync(MusicFile musicFile)
{
var destinationFileName = GetDestinationFileName(musicFile.FileName);
var transcodeItem = new TranscodeItem(musicFile, destinationFileName);
transcodingManager.AddTranscodeItem(transcodeItem);
Logger.Verbose("Start Transcode: {0} > {1}", musicFile.FileName, destinationFileName);
var cts = new CancellationTokenSource();
cancellationTokenSources.Add(transcodeItem, cts);
UpdateCancelCommands();
var metadata = await musicFile.GetMetadataAsync();
uint bitrate = GetConvertBitrate(metadata.Bitrate);
try
{
await TranscodeAsyncCore(transcodeItem, bitrate, cts.Token);
}
catch (OperationCanceledException)
{
transcodingManager.RemoveTranscodeItem(transcodeItem);
}
catch (Exception ex)
{
Logger.Error("TranscodeAsync exception: {0}", ex);
transcodeItem.Error = ex;
}
finally
{
cancellationTokenSources.Remove(transcodeItem);
if (allTranscodingsCanceledCompletion != null && !cancellationTokenSources.Any())
{
allTranscodingsCanceledCompletion.SetResult(null);
}
UpdateCancelCommands();
Logger.Verbose("End Transcode: {0} > {1}", musicFile.FileName, destinationFileName);
}
}
