private async void OnConvert(object sender, RoutedEventArgs e)
{
var gifCreator = new GifCreator();
var picker = new FileSavePicker
{
SuggestedStartLocation = PickerLocationId.PicturesLibrary,
DefaultFileExtension = ".gif",
SuggestedFileName = Path.ChangeExtension(sourceFile.Name, ".gif")
};
var resources = ResourceLoader.GetForCurrentView();
picker.FileTypeChoices.Add(resources.GetString("GIFImages"), new[] { ".gif" }.ToList());
var destinationFile = await picker.PickSaveFileAsync();
if (destinationFile != null)
{
ProgressBar.Value = 0.0;
ProgressRing.IsActive = true;
ProgressBar.Visibility = Visibility.Visible;
CancelButton.Visibility = Visibility.Visible;
var videoProperties = await sourceFile.Properties.GetVideoPropertiesAsync();
try
{
_action = gifCreator.TranscodeGifAsync(sourceFile, destinationFile, videoProperties.Width,
videoProperties.Height);
_action.Progress = OnProgress;
await _action;
if (_action.Status == AsyncStatus.Completed)
{
await Launcher.LaunchFileAsync(destinationFile);
}
}
catch (TaskCanceledException)
{
}
finally
{
_action = null;
ProgressRing.IsActive = false;
CancelButton.Visibility = Visibility.Collapsed;
ProgressBar.Visibility = Visibility.Collapsed;
}
}
}
private async Task TranscodeSingleFileAsync()
{
var firstVideo = _sourceFiles.First();
var sourceFile = firstVideo.File;
var gifCreator = new GifCreator();
var picker = new FileSavePicker
{
SuggestedStartLocation = PickerLocationId.PicturesLibrary,
DefaultFileExtension = ".gif",
SuggestedFileName = Path.ChangeExtension(sourceFile.Name, ".gif")
};
var resources = ResourceLoader.GetForCurrentView();
picker.FileTypeChoices.Add(resources.GetString("GIFImages"), new[] { ".gif" }.ToList());
var destinationFile = await picker.PickSaveFileAsync();
if (destinationFile != null)
{
Initialize();
var videoProperties = await sourceFile.Properties.GetVideoPropertiesAsync();
try
{
_operation = gifCreator.TranscodeGifAsync(sourceFile, destinationFile, firstVideo.Width,
firstVideo.Height, firstVideo.FrameRate);
_operation.Progress = OnProgress;
var succeeded = await _operation;
if (succeeded && _operation.Status == AsyncStatus.Completed)
{
await Launcher.LaunchFileAsync(destinationFile);
}
}
catch (TaskCanceledException)
{
}
finally
{
Cleanup();
}
}
}
private async Task TranscodeMultipleFilesAsync()
{
var picker = new FolderPicker
{
SuggestedStartLocation = PickerLocationId.PicturesLibrary,
ViewMode = PickerViewMode.List,
};
picker.FileTypeFilter.Add(".gif");
var folder = await picker.PickSingleFolderAsync();
if (folder == null)
{
return;
}
Initialize();
try
{
_operation = AsyncInfo.Run(async delegate(CancellationToken token, IProgress <double> progress)
{
var progressPerFile = 100 / Convert.ToDouble(_sourceFiles.Count);
progress.Report(0.0);
var fileIndex = 0.0;
foreach (var item in _sourceFiles)
{
var sourceFile = item.File;
var desiredName = Path.ChangeExtension(item.Name, ".gif");
var destinationFile = await folder.CreateFileAsync(desiredName, CreationCollisionOption.GenerateUniqueName);
if (token.IsCancellationRequested)
{
return(false);
}
try
{
var gifCreator = new GifCreator();
var action = gifCreator.TranscodeGifAsync(sourceFile, destinationFile, item.Width,
item.Height, item.FrameRate);
action.Progress = delegate(IAsyncOperationWithProgress <bool, double> a, double v)
{
if (token.IsCancellationRequested)
{
action.Cancel();
}
progress.Report((fileIndex * progressPerFile) + progressPerFile * v / 100.0);
};
await action;
if (token.IsCancellationRequested)
{
return(false);
}
}
catch (System.Exception se)
{
System.Diagnostics.Debug.WriteLine(se.Message);
}
fileIndex++;
}
return(true);
});
_operation.Progress = OnProgress;
await _operation;
await Launcher.LaunchFolderAsync(folder);
}
catch (TaskCanceledException)
{
}
finally
{
Cleanup();
}
}
