private void Player_MediaOpened(MediaPlayer sender, object args)
{
_projection = _player.PlaybackSession.SphericalVideoProjection;
SphericalVideoFrameFormat videoFormat = _projection.FrameFormat;
if (videoFormat != SphericalVideoFrameFormat.Equirectangular)
{
_projection.FrameFormat = SphericalVideoFrameFormat.Equirectangular;
}
_projection.IsEnabled = true;
_projection.HorizontalFieldOfViewInDegrees = 120;
_player.PlaybackSession.PlaybackStateChanged += PlaybackSession_PlaybackStateChanged;
}
/// <summary>
/// Start previewing
/// </summary>
/// <returns></returns>
private async Task StartPreviewAsync()
{
_mediaPlayer = new MediaPlayer();
_mediaPlayer.RealTimePlayback = true;
_mediaPlayer.AutoPlay = true;
_mediaPlayer.Source = MediaSource.CreateFromMediaFrameSource(_selectedFrameSource);
_mediaPlayer.CommandManager.IsEnabled = false;
PreviewElement.SetMediaPlayer(_mediaPlayer);
_mediaPlayerProjection = _mediaPlayer.PlaybackSession.SphericalVideoProjection;
// Set up the UI to preview the stream
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
if (ToggleForceSpherical.IsChecked == true)
{
// force spherical projection format from UI button
_mediaPlayerProjection.FrameFormat = SphericalVideoFrameFormat.Equirectangular;
_mediaPlayerProjection.IsEnabled = true;
_mediaPlayerProjection.HorizontalFieldOfViewInDegrees = 120;
if (_sphericalProjectionEffect != null)
{
_sphericalProjectionEffect.SphericalProjection.HorizontalFieldOfViewInDegrees = 120;
}
}
else
{
_mediaPlayerProjection.IsEnabled = (_mediaPlayerProjection.FrameFormat == SphericalVideoFrameFormat.Equirectangular);
}
// Show vertical scroll bar for zoom
FieldOfViewControl.Visibility = _mediaPlayerProjection.IsEnabled ?
Visibility.Visible
: Visibility.Collapsed;
PreviewElement.ManipulationMode = _mediaPlayerProjection.IsEnabled ?
ManipulationModes.TranslateX | ManipulationModes.TranslateY | ManipulationModes.Rotate | ManipulationModes.TranslateInertia
: ManipulationModes.None;
// this check box makes sense only when spherical projection is enabled.
ToggleRecordProjection.Visibility = _mediaPlayerProjection.IsEnabled ?
Visibility.Visible
: Visibility.Collapsed;
// Prevent the device from sleeping while we run the preview
_displayRequest.RequestActive();
_isPreviewing = true;
});
}
private void MediaPlayer_MediaOpened(MediaPlayer sender, object args)
{
videoProjection = mediaPlayer.PlaybackSession.SphericalVideoProjection;
Windows.Media.MediaProperties.SphericalVideoFrameFormat videoFormat = videoProjection.FrameFormat;
// Some times Content metadata doesn't provided correct format. Try to force the equirectangular format, if doesn't match
if (videoFormat != Windows.Media.MediaProperties.SphericalVideoFrameFormat.Equirectangular)
{
videoProjection.FrameFormat = Windows.Media.MediaProperties.SphericalVideoFrameFormat.Equirectangular;
}
videoProjection.IsEnabled = true;
videoProjection.HorizontalFieldOfViewInDegrees = 120;
mediaPlayer.PlaybackSession.PlaybackStateChanged += PlaybackSession_PlaybackStateChanged;
StartInputLoop();
}
/// <summary>
/// Stop previewing
/// </summary>
/// <returns></returns>
private async Task StopPreviewAsync()
{
try
{
_mediaPlayerProjection = null;
_mediaPlayer = null;
_isPreviewing = false;
}
catch (Exception ex)
{
TraceExceptionAsync(ex);
}
finally
{
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => { RecordButton.IsEnabled = false; PhotoButton.IsEnabled = false; });
}
}
