protected void StartPlayback()
{
HResult hr = m_pSession.Start(Guid.Empty, new PropVariant());
if (hr == HResult.S_OK)
{
mPlayPauseBtn.IsEnabled = true;
mImageBtn.Source = new BitmapImage(new Uri("pack://application:,,,/WPFMediaFoundationPlayer;component/Images/pause.png", UriKind.Absolute));
mIsPlaying = true;
mPresentationClock = null;
m_pSession.GetClock(out mPresentationClock);
mTickTimer.Start();
mIsSeek = false;
}
MFError.ThrowExceptionForHR(hr);
//m_pSession.
}
/// <summary>
/// Start play Media
/// </summary>
protected void StartPlayback()
{
TRACE("Media::StartPlayback");
Debug.Assert(m_pSession != null);
m_pSession.Start(Guid.Empty, new PropVariant());
}
/// <summary>
/// Plays the media
/// </summary>
public virtual void Play()
{
VerifyAccess();
if (m_pSession != null)
{
m_pSession.Start(Guid.Empty, new PropVariant());
}
}
/// <summary>
/// Starts playback.
/// </summary>
/// <param name="StartedPosition">Where to start playback,in second.</param>
public void Play(long StartedPosition)
{
if (!IsPrepared)
{
throw new InvalidOperationException("This player is still loading.");
}
if (StartedPosition > Duration)
{
throw new ArgumentException("Invaalid time.");
}
PropVariant pos = new PropVariant
{
vt = (short)VarEnum.VT_I8,
hVal = StartedPosition * 10000000,
};
m_Session.Start(Guid.Empty, pos);
}
public void PlayFromBegining()
{
if (m_Session == null)
{
throw new InvalidOperationException("This player hasn't initialized yet");
}
if (!Prepared)
{
throw new InvalidOperationException("This player is still loading.");
}
PropVariant pos = new PropVariant()
{
vt = (short)VarEnum.VT_I8,
hVal = 0
};
m_Session.Start(Guid.Empty, ref pos);
PlaybackState = PlaybackState.Playing;
}
////////////////////////////////////////////////////////////////////////////////////////
// Name: CPlayer::Play (Public)
// Description:
// Starts the media session with the current topology
///////////////////////////////////////////////////////////////////////////////////////////
public HResult Play()
{
Debug.WriteLine("\nCPlayer::Play");
HResult hr = 0;
try
{
// Create the starting position parameter
PropVariant var = new PropVariant();
hr = m_pMediaSession.Start(Guid.Empty, var);
MFError.ThrowExceptionForHR(hr);
}
catch (Exception e)
{
hr = (HResult)Marshal.GetHRForException(e);
}
return(hr);
}
/// <summary>
/// Starts the Media Session.
/// </summary>
/// <param name="mediaSession">A valid IMFMediaSession instance.</param>
/// <param name="startPosition">The starting position for playback.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult Start(this IMFMediaSession mediaSession, TimeSpan startPosition)
{
if (mediaSession == null)
{
throw new ArgumentNullException("mediaSession");
}
using (PropVariant start = new PropVariant(startPosition.Ticks))
{
return(mediaSession.Start(Guid.Empty, start));
}
}
/// +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=
/// <summary>
/// Starts the copy of the media data
/// </summary>
/// <history>
/// 01 Nov 18 Cynic - Originally Written
/// </history>
private void StartFileCopy()
{
LogMessage("StartFileCopy called");
if (mediaSession == null)
{
LogMessage("StartFileCopy Failed. mediaSession == null");
return;
}
// this is what starts the data moving through the pipeline
HResult hr = mediaSession.Start(Guid.Empty, new PropVariant());
if (hr != HResult.S_OK)
{
throw new Exception("StartFileCopy call to mediaSession.Start failed. Err=" + hr.ToString());
}
}
private static HResult RunMediaSession(IMFMediaSession mediaSession)
{
HResult hr = S_OK;
bool receiveSessionEvent = true;
while (receiveSessionEvent)
{
HResult hrStatus = S_OK;
IMFMediaEvent mediaEvent = null;
MediaEventType eventType = MediaEventType.MEUnknown;
MFTopoStatus topoStatus = MFTopoStatus.Invalid;
hr = mediaSession.GetEvent(MFEventFlag.None, out mediaEvent);
if (Succeeded(hr))
{
hr = mediaEvent.GetStatus(out hrStatus);
}
if (Succeeded(hr))
{
hr = mediaEvent.GetType(out eventType);
}
if (Succeeded(hr) && Succeeded(hrStatus))
{
switch (eventType)
{
case MediaEventType.MESessionTopologySet:
Debug.WriteLine("MediaSession:TopologySetEvent");
break;
case MediaEventType.MESessionTopologyStatus:
Debug.WriteLine("MediaSession:TopologStatusEvent");
hr = mediaEvent.GetUINT32(MF_EVENT_TOPOLOGY_STATUS, out int topoStatusInt);
if (Succeeded(hr))
{
topoStatus = (MFTopoStatus)topoStatusInt;
switch (topoStatus)
{
case MFTopoStatus.Ready:
Debug.WriteLine("MediaSession:TopologyStatus: MFTopoStatus.Ready");
hr = mediaSession.Start();
break;
default:
Debug.WriteLine("MediaSession:TopologyStatus: MFTopoStatus." + topoStatus);
break;
}
}
break;
case MediaEventType.MESessionClosed:
Debug.WriteLine("MediaSession:SessionClosedEvent");
receiveSessionEvent = false;
break;
case MediaEventType.MESessionStopped:
Debug.WriteLine("MediaSession:SesssionStoppedEvent");
hr = mediaSession.Stop();
break;
default:
Debug.WriteLine("MediaSession:Event: " + eventType);
break;
}
mediaEvent = null;
if (Failed(hr) || Failed(hrStatus))
{
receiveSessionEvent = false;
}
}
}
return(hr);
}
