//--
/// <summary>
/// Registers the application to receive ducking notifications.
/// <seealso cref="RegisterDuckNotification"/>
/// </summary>
/// <param name="sessionId">A string that contains a session instance identifier. Applications that are playing a media stream and want to provide custom stream attenuation or ducking behavior, pass their own session instance identifier.
/// Other applications that do not want to alter their streams but want to get all the ducking notifications must pass NULL.</param>
/// <param name="sessionNotification">Instance of any object which implements the <see cref="IAudioVolumeDuckNotification"/> and which should receive duck notifications.</param>
/// <returns>HRESULT</returns>
public unsafe int RegisterDuckNotificationNative(string sessionId,
IAudioVolumeDuckNotification sessionNotification)
{
int result = 0;
if (!_volumeDuckNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioVolumeDuckNotification))
: IntPtr.Zero;
IntPtr ptr0 = sessionId != null?Marshal.StringToHGlobalUni(sessionId) : IntPtr.Zero;
try
{
result = InteropCalls.CallI(UnsafeBasePtr, (void *)ptr0, (void *)ptr,
((void **)(*(void **)UnsafeBasePtr))[8]);
}
finally
{
if (ptr != IntPtr.Zero)
{
Marshal.Release(ptr);
}
if (ptr0 != IntPtr.Zero)
{
Marshal.FreeHGlobal(ptr0);
}
}
_volumeDuckNotifications.Add(sessionNotification);
}
return(result);
}
/// <summary>
/// Deletes the registration to receive ducking notifications.
/// <seealso cref="UnregisterDuckNotification"/>
/// </summary>
/// <param name="sessionNotification">
/// The <see cref="IAudioVolumeDuckNotification"/> interface that is implemented by the application. Pass the same interface pointer that was specified to the session manager in a previous call to the <see cref="RegisterDuckNotification"/> method.
/// </param>
/// <returns>HRESULT</returns>
public unsafe int UnregisterDuckNotificationNative(IAudioVolumeDuckNotification sessionNotification)
{
int result = 0;
if (_volumeDuckNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioVolumeDuckNotification))
: IntPtr.Zero;
try
{
result = InteropCalls.CallI(UnsafeBasePtr, (void *)ptr, ((void **)(*(void **)UnsafeBasePtr))[9]);
}
finally
{
if (ptr != IntPtr.Zero)
{
Marshal.Release(ptr);
}
}
_volumeDuckNotifications.Remove(sessionNotification);
}
return(result);
}
/// <summary>
/// Deletes the registration to receive ducking notifications.
/// </summary>
/// <param name="sessionNotification">
/// The <see cref="IAudioVolumeDuckNotification"/> interface that is implemented by the application. Pass the same interface pointer that was specified to the session manager in a previous call to the <see cref="RegisterDuckNotification"/> method.
/// </param>
public void UnregisterDuckNotification(IAudioVolumeDuckNotification sessionNotification)
{
CoreAudioAPIException.Try(UnregisterDuckNotificationNative(sessionNotification), InterfaceName,
"UnregisterDuckNotification");
}
/// <summary>
/// Registers the application to receive ducking notifications.
/// </summary>
/// <param name="sessionId">A string that contains a session instance identifier. Applications that are playing a media stream and want to provide custom stream attenuation or ducking behavior, pass their own session instance identifier.
/// Other applications that do not want to alter their streams but want to get all the ducking notifications must pass NULL.</param>
/// <param name="sessionNotification">Instance of any object which implements the <see cref="IAudioVolumeDuckNotification"/> and which should receive duck notifications.</param>
public void RegisterDuckNotification(string sessionId, IAudioVolumeDuckNotification sessionNotification)
{
CoreAudioAPIException.Try(RegisterDuckNotificationNative(sessionId, sessionNotification), InterfaceName,
"RegisterDuckNotification");
}
/// <summary>
/// Registers the application to receive ducking notifications.
/// </summary>
/// <param name="sessionId">A string that contains a session instance identifier. Applications that are playing a media stream and want to provide custom stream attenuation or ducking behavior, pass their own session instance identifier.
/// Other applications that do not want to alter their streams but want to get all the ducking notifications must pass NULL.</param>
/// <param name="sessionNotification">Instance of any object which implements the <see cref="IAudioVolumeDuckNotification"/> and which should receive duck notifications.</param>
public void RegisterDuckNotification(string sessionId, IAudioVolumeDuckNotification sessionNotification)
{
CoreAudioAPIException.Try(RegisterDuckNotificationNative(sessionId, sessionNotification), InterfaceName,
"RegisterDuckNotification");
}
/// <summary>
/// Deletes the registration to receive ducking notifications.
/// <seealso cref="UnregisterDuckNotification"/>
/// </summary>
/// <param name="sessionNotification">
/// The <see cref="IAudioVolumeDuckNotification"/> interface that is implemented by the application. Pass the same interface pointer that was specified to the session manager in a previous call to the <see cref="RegisterDuckNotification"/> method.
/// </param>
/// <returns>HRESULT</returns>
public unsafe int UnregisterDuckNotificationNative(IAudioVolumeDuckNotification sessionNotification)
{
int result = 0;
if (_volumeDuckNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioVolumeDuckNotification))
: IntPtr.Zero;
try
{
result = InteropCalls.CallI(UnsafeBasePtr, (void*)ptr, ((void**)(*(void**)UnsafeBasePtr))[9]);
}
finally
{
if (ptr != IntPtr.Zero)
{
Marshal.Release(ptr);
}
}
_volumeDuckNotifications.Remove(sessionNotification);
}
return result;
}
/// <summary>
/// Deletes the registration to receive ducking notifications.
/// </summary>
/// <param name="sessionNotification">
/// The <see cref="IAudioVolumeDuckNotification"/> interface that is implemented by the application. Pass the same interface pointer that was specified to the session manager in a previous call to the <see cref="RegisterDuckNotification"/> method.
/// </param>
public void UnregisterDuckNotification(IAudioVolumeDuckNotification sessionNotification)
{
CoreAudioAPIException.Try(UnregisterDuckNotificationNative(sessionNotification), InterfaceName,
"UnregisterDuckNotification");
}
//--
/// <summary>
/// Registers the application to receive ducking notifications.
/// <seealso cref="RegisterDuckNotification"/>
/// </summary>
/// <param name="sessionId">A string that contains a session instance identifier. Applications that are playing a media stream and want to provide custom stream attenuation or ducking behavior, pass their own session instance identifier.
/// Other applications that do not want to alter their streams but want to get all the ducking notifications must pass NULL.</param>
/// <param name="sessionNotification">Instance of any object which implements the <see cref="IAudioVolumeDuckNotification"/> and which should receive duck notifications.</param>
/// <returns>HRESULT</returns>
public unsafe int RegisterDuckNotificationNative(string sessionId,
IAudioVolumeDuckNotification sessionNotification)
{
int result = 0;
if (!_volumeDuckNotifications.Contains(sessionNotification))
{
IntPtr ptr = sessionNotification != null
? Marshal.GetComInterfaceForObject(sessionNotification, typeof(IAudioVolumeDuckNotification))
: IntPtr.Zero;
IntPtr ptr0 = sessionId != null ? Marshal.StringToHGlobalUni(sessionId) : IntPtr.Zero;
try
{
result = InteropCalls.CallI(UnsafeBasePtr, (void*)ptr0, (void*)ptr,
((void**)(*(void**)UnsafeBasePtr))[8]);
}
finally
{
if (ptr != IntPtr.Zero)
Marshal.Release(ptr);
if (ptr0 != IntPtr.Zero)
Marshal.FreeHGlobal(ptr0);
}
_volumeDuckNotifications.Add(sessionNotification);
}
return result;
}
/// <summary>
/// Deletes the registration to receive ducking notifications.
/// </summary>
/// <param name="sessionNotification">
/// The <see cref="IAudioVolumeDuckNotification"/> interface that is implemented by the application. Pass the same interface pointer that was specified to the session manager in a previous call to the <see cref="RegisterDuckNotification"/> method.
/// </param>
public void UnregisterDuckNotification(IAudioVolumeDuckNotification sessionNotification)
{
UnregisterDuckNotificationNative(sessionNotification);
}
