/// <inheritdoc/>
protected override void Dispose(bool disposing)
{
if (_nativeHandle != IntPtr.Zero)
{
// Unregister the callbacks
if (_selfHandle != IntPtr.Zero)
{
LocalVideoTrackInterop.LocalVideoTrack_RegisterI420AFrameCallback(_nativeHandle, null, IntPtr.Zero);
LocalVideoTrackInterop.LocalVideoTrack_RegisterARGBFrameCallback(_nativeHandle, null, IntPtr.Zero);
GCHandle.FromIntPtr(_selfHandle).Free();
if (disposing)
{
_interopCallbackArgs = null;
}
_selfHandle = IntPtr.Zero;
}
// Remove the track from the peer connection, and release the reference
// to the peer connection.
if (!_nativePeerHandle.IsClosed)
{
PeerConnectionInterop.PeerConnection_RemoveLocalVideoTrack(_nativePeerHandle, _nativeHandle);
_nativePeerHandle.Close();
}
}
if (disposing)
{
PeerConnection = null;
}
base.Dispose(disposing);
}
/// <inheritdoc/>
public void Dispose()
{
if (_nativeHandle.IsClosed)
{
return;
}
// Remove the track from the peer connection, if any
PeerConnection?.RemoveLocalVideoTrack(this);
Debug.Assert(PeerConnection == null); // see OnTrackRemoved
// Unregister interop callbacks
if (_selfHandle != IntPtr.Zero)
{
LocalVideoTrackInterop.LocalVideoTrack_RegisterI420AFrameCallback(_nativeHandle, null, IntPtr.Zero);
LocalVideoTrackInterop.LocalVideoTrack_RegisterArgb32FrameCallback(_nativeHandle, null, IntPtr.Zero);
Utils.ReleaseWrapperRef(_selfHandle);
_selfHandle = IntPtr.Zero;
_interopCallbackArgs = null;
}
// Currently there is a 1:1 mapping between track and source, so the track owns its
// source and must dipose of it.
Source?.Dispose();
// Destroy the native object. This may be delayed if a P/Invoke callback is underway,
// but will be handled at some point anyway, even if the managed instance is gone.
_nativeHandle.Dispose();
}
private void RegisterInteropCallbacks()
{
_interopCallbackArgs = new LocalVideoTrackInterop.InteropCallbackArgs()
{
Track = this,
I420AFrameCallback = LocalVideoTrackInterop.I420AFrameCallback,
Argb32FrameCallback = LocalVideoTrackInterop.Argb32FrameCallback,
};
_selfHandle = Utils.MakeWrapperRef(this);
LocalVideoTrackInterop.LocalVideoTrack_RegisterI420AFrameCallback(
_nativeHandle, _interopCallbackArgs.I420AFrameCallback, _selfHandle);
LocalVideoTrackInterop.LocalVideoTrack_RegisterArgb32FrameCallback(
_nativeHandle, _interopCallbackArgs.Argb32FrameCallback, _selfHandle);
}
/// <inheritdoc/>
public void Dispose()
{
if (_nativeHandle.IsClosed)
{
return;
}
// Notify the source
if (Source != null)
{
Source.OnTrackRemovedFromSource(this);
Source = null;
}
// Remove the track from the peer connection, if any
if (Transceiver != null)
{
Debug.Assert(PeerConnection != null);
Debug.Assert(Transceiver.LocalTrack == this);
Transceiver.LocalVideoTrack = null;
}
Debug.Assert(PeerConnection == null);
Debug.Assert(Transceiver == null);
// Unregister interop callbacks
if (_selfHandle != IntPtr.Zero)
{
LocalVideoTrackInterop.LocalVideoTrack_RegisterI420AFrameCallback(_nativeHandle, null, IntPtr.Zero);
LocalVideoTrackInterop.LocalVideoTrack_RegisterArgb32FrameCallback(_nativeHandle, null, IntPtr.Zero);
Utils.ReleaseWrapperRef(_selfHandle);
_selfHandle = IntPtr.Zero;
_interopCallbackArgs = null;
}
// Destroy the native object. This may be delayed if a P/Invoke callback is underway,
// but will be handled at some point anyway, even if the managed instance is gone.
_nativeHandle.Dispose();
}
