/// <summary>
/// Disposes all current resources.
/// </summary>
private void DisposeResources()
{
lock (m_mfResourceLock)
{
// Shutdown current session
if (m_mediaSession != null)
{
m_mediaSession.Shutdown();
}
// Clear all references
m_currentVideoLink = null;
m_currentCaptureDevice = null;
m_currentVideoDuration = TimeSpan.Zero;
GraphicsHelper.SafeDispose(ref m_displayControl);
GraphicsHelper.SafeDispose(ref m_audioStreamVolume);
GraphicsHelper.SafeDispose(ref m_mediaSession);
m_sessionEventHandler = null;
GraphicsHelper.SafeDispose(ref m_videoSourceStream);
GraphicsHelper.SafeDispose(ref m_videoSourceStreamNet);
}
// Apply new state
this.IsPaused = false;
this.State = MediaPlayerState.NothingToDo;
}
/// <summary>
/// Opens the given video file and plays it directly.
/// </summary>
/// <param name="videoLink">The link to the video file.</param>
public async Task OpenAndShowVideoFileAsync(ResourceLink videoLink)
{
// Check for correct state
if (this.State != MediaPlayerState.NothingToDo)
{
throw new InvalidOperationException("Unable to open video file as long as there is another video playing!");
}
// Apply new state
this.State = MediaPlayerState.Opening;
try
{
// Create media session and a corresponding event listener obect for async events
MF.MediaFactory.CreateMediaSession(null, out m_mediaSession);
m_sessionEventHandler = MFSessionEventListener.AttachTo(m_mediaSession);
m_sessionEventHandler.EndOfPresentation += OnSessionEventHandlerEndOfPresentationReached;
// Create source object
MF.SourceResolver sourceResolver = new MF.SourceResolver();
MF.ObjectType objType = MF.ObjectType.Invalid;
m_videoSourceStreamNet = videoLink.OpenInputStream();
m_videoSourceStream = new MF.ByteStream(m_videoSourceStreamNet);
SharpDX.ComObject objSource = sourceResolver.CreateObjectFromStream(
m_videoSourceStream,
"Dummy." + videoLink.FileExtension,
MF.SourceResolverFlags.MediaSource,
out objType);
using (MF.MediaSource mediaSource = objSource.QueryInterface <MF.MediaSource>())
{
GraphicsHelper.SafeDispose(ref objSource);
GraphicsHelper.SafeDispose(ref sourceResolver);
await ShowVideoAsync(mediaSource);
}
// Video opened successfully
m_currentVideoLink = videoLink;
m_currentCaptureDevice = null;
this.State = MediaPlayerState.Playing;
}
catch (Exception)
{
// Unload all resources in case of an exception
DisposeResources();
throw;
}
}
public async Task ShowCaptureDeviceAsync(CaptureDeviceInfo captureDevice)
{
// Check for correct state
if (this.State != MediaPlayerState.NothingToDo)
{
throw new InvalidOperationException("Unable to open video file as long as there is another video playing!");
}
// Apply new state
this.State = MediaPlayerState.Opening;
try
{
// Create media session and a corresponding event listener obect for async events
MF.MediaFactory.CreateMediaSession(null, out m_mediaSession);
m_sessionEventHandler = MFSessionEventListener.AttachTo(m_mediaSession);
m_sessionEventHandler.EndOfPresentation += OnSessionEventHandlerEndOfPresentationReached;
// Create the media source
using (MF.MediaSource mediaSource = captureDevice.CreateMediaSource())
{
// Show the video
await ShowVideoAsync(mediaSource);
}
// Video opened successfully
m_currentVideoLink = null;
m_currentCaptureDevice = captureDevice;
this.State = MediaPlayerState.Playing;
}
catch (Exception)
{
// Unload all resources in case of an exception
DisposeResources();
throw;
}
}
