private async void OpenVideoFileAndPlay(StorageFile videoFile)
{
var videoStream = await videoFile.OpenAsync(FileAccessMode.Read);
VideoElement.SetSource(videoStream, videoFile.ContentType);
nameBlock.Text = videoFile.DisplayName;
}
private async void PageLoaded(object sender, RoutedEventArgs e)
{
VideoElement.MediaOpened += (s, args) =>
{
Progress.Maximum = VideoElement.NaturalDuration.TimeSpan.TotalSeconds;
DurationLabel.Text = VideoElement.NaturalDuration.TimeSpan.ToString(@"hh\:mm\:ss");
};
IRandomAccessStream source = null;
do
{
source = await GetSource();
} while (source == null);
VideoElement.SetSource(source, "");
Progress.Minimum = 0;
Progress.IsThumbToolTipEnabled = false;
_timer = new DispatcherTimer()
{
Interval = TimeSpan.FromSeconds(0.2)
};
_timer.Tick += UpdateVideoPosition;
_timer.Start();
SystemNavigationManager.GetForCurrentView().BackRequested += NavigateBackRequested;
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility =
Frame.CanGoBack ?
AppViewBackButtonVisibility.Visible :
AppViewBackButtonVisibility.Collapsed;
}
/// <summary>
/// Handle the returned file from file picker
/// This method is triggered by ContinuationManager based on ActivationKind
/// </summary>
/// <param name="args">File save picker continuation activation argment. It cantains the file user selected with file save picker </param>
public async void ContinueFileSavePicker(FileSavePickerContinuationEventArgs args)
{
StorageFile videoFile = args.File;
if (videoFile != null)
{
IRandomAccessStream videoStream = await videoFile.OpenAsync(FileAccessMode.ReadWrite);
m_picture = new PictureWriter(videoStream, m_videoWidth, m_videoHeight);
// Add frames to the video.
ProcessVideoRing.IsActive = true;
VideoElement.AreTransportControlsEnabled = false;
ImageBtn.IsEnabled = false;
EncodeBtn.IsEnabled = false;
statusText.Text = "Encoding...";
foreach (StorageFile file in m_files)
{
Windows.Storage.FileProperties.ImageProperties properties = await file.Properties.GetImagePropertiesAsync();
float scaleOfWidth = (float)m_videoWidth / properties.Width;
float scaleOfHeight = (float)m_videoHeight / properties.Height;
float scale = scaleOfHeight > scaleOfWidth ?
scaleOfWidth : scaleOfHeight;
uint width = (uint)(properties.Width * scale);
uint height = (uint)(properties.Height * scale);
using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.Read))
{
for (int i = 0; i < 10; ++i)
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
PixelDataProvider dataProvider = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
new BitmapTransform { ScaledWidth = width, ScaledHeight = height },
ExifOrientationMode.RespectExifOrientation,
ColorManagementMode.ColorManageToSRgb);
m_picture.AddFrame(dataProvider.DetachPixelData(), (int)width, (int)height);
}
}
}
m_picture.Finalize();
m_picture = null;
VideoElement.AreTransportControlsEnabled = true;
ImageBtn.IsEnabled = true;
EncodeBtn.IsEnabled = true;
statusText.Text = "The image files are encoded successfully. You can review the video.";
ProcessVideoRing.IsActive = false;
videoStream.Dispose();
videoStream = null;
videoStream = await videoFile.OpenAsync(FileAccessMode.Read);
VideoElement.SetSource(videoStream, videoFile.ContentType);
}
}
private async void EncodeBtn_Click(object sender, RoutedEventArgs e)
{
if (m_files.Count == 0)
{
statusText.Text = "You must select one image at least.";
return;
}
// Create the video file via file picker.
FileSavePicker savePicker = new FileSavePicker();
savePicker.SuggestedStartLocation = PickerLocationId.VideosLibrary;
savePicker.FileTypeChoices.Add("MP4 File", new List <string>()
{
".mp4"
});
savePicker.SuggestedFileName = "output";
StorageFile videoFile = await savePicker.PickSaveFileAsync();
if (videoFile != null)
{
IRandomAccessStream videoStream = await videoFile.OpenAsync(FileAccessMode.ReadWrite);
m_picture = new PictureWriter(videoStream, m_videoWidth, m_videoHeight);
// Add frames to the video.
ProcessVideoRing.IsActive = true;
statusText.Text = "Encoding...";
foreach (StorageFile file in m_files)
{
Windows.Storage.FileProperties.ImageProperties properties = await file.Properties.GetImagePropertiesAsync();
float scaleOfWidth = (float)m_videoWidth / properties.Width;
float scaleOfHeight = (float)m_videoHeight / properties.Height;
float scale = scaleOfHeight > scaleOfWidth ?
scaleOfWidth : scaleOfHeight;
uint width = (uint)(properties.Width * scale);
uint height = (uint)(properties.Height * scale);
using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.Read))
{
for (int i = 0; i < 10; ++i)
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
PixelDataProvider dataProvider = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
new BitmapTransform { ScaledWidth = width, ScaledHeight = height },
ExifOrientationMode.RespectExifOrientation,
ColorManagementMode.ColorManageToSRgb);
m_picture.AddFrame(dataProvider.DetachPixelData(), (int)width, (int)height);
}
}
}
m_picture.Finalize();
m_picture = null;
statusText.Text = "The image files are encoded successfully. You can review the video.";
ProcessVideoRing.IsActive = false;
videoStream.Dispose();
videoStream = null;
videoStream = await videoFile.OpenAsync(FileAccessMode.Read);
VideoElement.SetSource(videoStream, videoFile.ContentType);
}
}
