private void RegisterSessionNotification(AudioSessionManager2 audioSessionManager2,
IAudioSessionNotification audioSessionNotification)
{
if (Thread.CurrentThread.GetApartmentState() == ApartmentState.MTA)
{
audioSessionManager2.RegisterSessionNotification(audioSessionNotification);
}
else
{
using (ManualResetEvent waitHandle = new ManualResetEvent(false))
{
ThreadPool.QueueUserWorkItem(
(o) =>
{
try
{
audioSessionManager2.RegisterSessionNotification(audioSessionNotification);
}
finally
{
// ReSharper disable once AccessToDisposedClosure
waitHandle.Set();
}
});
waitHandle.WaitOne();
}
}
// ReSharper disable once ReturnValueOfPureMethodIsNotUsed
audioSessionManager2.GetSessionEnumerator().ToArray(); //necessary to make it work
}
/// <summary>
/// Registers the application to receive a notification when a session is created.
/// <seealso cref="RegisterSessionNotificationNative"/>
/// </summary>
/// <param name="sessionNotification">The application's implementation of the <see cref="IAudioSessionNotification"/> interface.</param>
/// <returns>HRESULT</returns>
/// <remarks>
/// Use the <see cref="AudioSessionNotification"/> class as the default implementation for the <paramref name="sessionNotification"/> parameter.
///
/// <c>Note:</c> Make sure to call the <see cref="RegisterSessionNotificationNative"/> from an MTA-Thread. Also make sure to enumerate all sessions after calling this method.
/// </remarks>
public unsafe int RegisterSessionNotificationNative(IAudioSessionNotification sessionNotification)
{
int result = 0;
if (!_sessionNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioSessionNotification))
: IntPtr.Zero;
try
{
result = InteropCalls.CallI(
UnsafeBasePtr,
ptr,
((void **)(*(void **)UnsafeBasePtr))[6]);
}
finally
{
if (ptr != IntPtr.Zero)
{
Marshal.Release(ptr);
}
}
_sessionNotifications.Add(sessionNotification);
}
return(result);
}
/// <summary>
/// Registers the application to receive a notification when a session is created.
/// </summary>
/// <param name="sessionNotification">The application's implementation of the <see cref="IAudioSessionNotification"/> interface.</param>
/// /// <remarks>
/// Use the <see cref="AudioSessionNotification"/> class as the default implementation for the <paramref name="sessionNotification"/> parameter.
///
/// <c>Note:</c> Make sure to call the <see cref="RegisterSessionNotification"/> from an MTA-Thread. Also make sure to enumerate all sessions after calling this method.
/// </remarks>
public void RegisterSessionNotification(IAudioSessionNotification sessionNotification)
{
if (Thread.CurrentThread.GetApartmentState() != ApartmentState.MTA)
{
throw new InvalidOperationException("RegisterSessionNotification has to be called from an MTA-Thread.");
}
CoreAudioAPIException.Try(RegisterSessionNotificationNative(sessionNotification), InterfaceName,
"RegisterSessionNotification");
}
/// <summary>
/// The UnregisterSessionNotification method deletes the registration to receive a notification when a session is created.
/// </summary>
/// <returns>HRESULT</returns>
public unsafe int UnregisterSessionNotificationNative(IAudioSessionNotification sessionNotification)
{
int result = 0;
if (_sessionNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null?Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioSessionNotification)) : IntPtr.Zero;
result = InteropCalls.CallI(_basePtr, (void *)ptr, ((void **)(*(void **)_basePtr))[7]);
_sessionNotifications.Remove(sessionNotification);
}
return(result);
}
/// <summary>
/// Registers the application to receive a notification when a session is created.
/// <seealso cref="RegisterSessionNotificationNative"/>
/// </summary>
/// <param name="sessionNotification">The application's implementation of the <see cref="IAudioSessionNotification"/> interface.</param>
/// <returns>HRESULT</returns>
/// <remarks>
/// Use the <see cref="AudioSessionNotification"/> class as the default implementation for the <paramref name="sessionNotification"/> parameter.
///
/// <c>Note:</c> Make sure to call the <see cref="RegisterSessionNotificationNative"/> from an MTA-Thread. Also make sure to enumerate all sessions after calling this method.
/// </remarks>
public unsafe int RegisterSessionNotificationNative(IAudioSessionNotification sessionNotification)
{
int result = 0;
if (!_sessionNotifications.Contains(sessionNotification))
{
result = InteropCalls.CallI(
UnsafeBasePtr,
sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioSessionNotification))
: IntPtr.Zero,
((void **)(*(void **)UnsafeBasePtr))[6]);
_sessionNotifications.Add(sessionNotification);
}
return(result);
}
/// <summary>
/// Deletes the registration to receive a notification when a session is created.
/// </summary>
/// <param name="sessionNotification">
/// The application's implementation of the <see cref="IAudioSessionNotification"/> interface.
/// Pass the same object that was specified to the session manager in a previous call <see cref="RegisterSessionNotification"/> to register for notification.</param>
public void UnregisterSessionNotification(IAudioSessionNotification sessionNotification)
{
CoreAudioAPIException.Try(UnregisterSessionNotificationNative(sessionNotification), InterfaceName,
"UnregisterSessionNotification");
}
/// <summary>
/// Deletes the registration to receive a notification when a session is created.
/// <seealso cref="UnregisterSessionNotification"/>
/// </summary>
/// <param name="sessionNotification">
/// The application's implementation of the <see cref="IAudioSessionNotification"/> interface.
/// Pass the same object that was specified to the session manager in a previous call <see cref="RegisterSessionNotification"/> to register for notification.</param>
/// <returns>HRESULT</returns>
public unsafe int UnregisterSessionNotificationNative(IAudioSessionNotification sessionNotification)
{
int result = 0;
if (_sessionNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioSessionNotification))
: IntPtr.Zero;
try
{
result = InteropCalls.CallI(
UnsafeBasePtr,
ptr,
((void**)(*(void**)UnsafeBasePtr))[7]);
}
finally
{
if (ptr != IntPtr.Zero)
{
Marshal.Release(ptr);
}
}
_sessionNotifications.Remove(sessionNotification);
}
return result;
}
/// <summary>
/// Deletes the registration to receive a notification when a session is created.
/// </summary>
/// <param name="sessionNotification">
/// The application's implementation of the <see cref="IAudioSessionNotification"/> interface.
/// Pass the same object that was specified to the session manager in a previous call <see cref="RegisterSessionNotification"/> to register for notification.</param>
public void UnregisterSessionNotification(IAudioSessionNotification sessionNotification)
{
CoreAudioAPIException.Try(UnregisterSessionNotificationNative(sessionNotification), InterfaceName,
"UnregisterSessionNotification");
}
/// <summary>
/// Registers the application to receive a notification when a session is created.
/// </summary>
/// <param name="sessionNotification">The application's implementation of the <see cref="IAudioSessionNotification"/> interface.</param>
/// /// <remarks>
/// Use the <see cref="AudioSessionNotification"/> class as the default implementation for the <paramref name="sessionNotification"/> parameter.
///
/// <c>Note:</c> Make sure to call the <see cref="RegisterSessionNotification"/> from an MTA-Thread. Also make sure to enumerate all sessions after calling this method.
/// </remarks>
public void RegisterSessionNotification(IAudioSessionNotification sessionNotification)
{
if (Thread.CurrentThread.GetApartmentState() != ApartmentState.MTA)
throw new InvalidOperationException("RegisterSessionNotification has to be called from an MTA-Thread.");
CoreAudioAPIException.Try(RegisterSessionNotificationNative(sessionNotification), InterfaceName,
"RegisterSessionNotification");
}
/// <summary>
/// The UnregisterSessionNotification method deletes the registration to receive a notification when a session is created.
/// </summary>
/// <returns>HRESULT</returns>
public unsafe int UnregisterSessionNotificationNative(IAudioSessionNotification sessionNotification)
{
int result = 0;
if (_sessionNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null ? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioSessionNotification)) : IntPtr.Zero;
result = InteropCalls.CallI(_basePtr, (void*)ptr, ((void**)(*(void**)_basePtr))[7]);
_sessionNotifications.Remove(sessionNotification);
}
return result;
}
/// <summary>
/// The RegisterSessionNotification method registers the application to receive a notification when a session is created.
/// </summary>
public void RegisterSessionNotification(IAudioSessionNotification sessionNotification)
{
CoreAudioAPIException.Try(RegisterSessionNotificationNative(sessionNotification), c, "RegisterSessionNotification");
}
/// <summary>
/// The RegisterSessionNotification method registers the application to receive a notification when a session is created.
/// </summary>
public void RegisterSessionNotification(IAudioSessionNotification sessionNotification)
{
CoreAudioAPIException.Try(RegisterSessionNotificationNative(sessionNotification), c, "RegisterSessionNotification");
}
/// <summary>
/// Registers the application to receive a notification when a session is created.
/// <seealso cref="RegisterSessionNotificationNative"/>
/// </summary>
/// <param name="sessionNotification">The application's implementation of the <see cref="IAudioSessionNotification"/> interface.</param>
/// <returns>HRESULT</returns>
/// <remarks>
/// Use the <see cref="AudioSessionNotification"/> class as the default implementation for the <paramref name="sessionNotification"/> parameter.
///
/// <c>Note:</c> Make sure to call the <see cref="RegisterSessionNotificationNative"/> from an MTA-Thread. Also make sure to enumerate all sessions after calling this method.
/// </remarks>
public unsafe int RegisterSessionNotificationNative(IAudioSessionNotification sessionNotification)
{
int result = 0;
if (!_sessionNotifications.Contains(sessionNotification))
{
result = InteropCalls.CallI(
UnsafeBasePtr,
sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof (IAudioSessionNotification))
: IntPtr.Zero,
((void**) (*(void**) UnsafeBasePtr))[6]);
_sessionNotifications.Add(sessionNotification);
}
return result;
}
/// <summary>
/// Deletes the registration to receive a notification when a session is created.
/// </summary>
/// <param name="sessionNotification">
/// The application's implementation of the <see cref="IAudioSessionNotification"/> interface.
/// Pass the same object that was specified to the session manager in a previous call <see cref="RegisterSessionNotification"/> to register for notification.</param>
public void UnregisterSessionNotification(IAudioSessionNotification sessionNotification)
{
UnregisterSessionNotificationNative(sessionNotification);
}
