private CoreAudioSession CacheSessionWrapper(IAudioSessionControl session)
{
var managedSession = new CoreAudioSession(_device, session);
//There's some dumb crap in the Api that causes the sessions to still appear
//even after the process has been terminated
if (Process.GetProcesses().All(x => x.Id != managedSession.ProcessId))
{
return(null);
}
var acquiredLock = _lock.AcquireReadLockNonReEntrant();
try
{
var existing = _sessionCache.FirstOrDefault(x => x.ProcessId == managedSession.ProcessId && String.Equals(x.Id, managedSession.Id));
if (existing != null)
{
managedSession.Dispose();
return(existing);
}
}
finally
{
if (acquiredLock)
{
_lock.ExitReadLock();
}
}
managedSession.StateChanged.Subscribe(ManagedSessionOnStateChanged);
managedSession.Disconnected.Subscribe(ManagedSessionOnDisconnected);
acquiredLock = _lock.AcquireWriteLockNonReEntrant();
try
{
_sessionCache.Add(managedSession);
}
finally
{
if (acquiredLock)
{
_lock.ExitWriteLock();
}
}
return(managedSession);
}
private void RemoveDeviceFromRealId(string deviceId)
{
var lockAcquired = _lock.AcquireWriteLockNonReEntrant();
try
{
_deviceCache.RemoveWhere(
x => String.Equals(x.RealId, deviceId, StringComparison.InvariantCultureIgnoreCase));
}
finally
{
if (lockAcquired)
{
_lock.ExitWriteLock();
}
}
}
private IEnumerable <CoreAudioDevice> RemoveFromRealId(string deviceId)
{
var lockAcquired = _lock.AcquireWriteLockNonReEntrant();
try
{
var devicesToRemove =
_deviceCache.Where(x => String.Equals(x.RealId, deviceId, StringComparison.InvariantCultureIgnoreCase)).ToList();
_deviceCache.RemoveWhere(x => String.Equals(x.RealId, deviceId, StringComparison.InvariantCultureIgnoreCase));
return(devicesToRemove);
}
finally
{
if (lockAcquired)
{
_lock.ExitWriteLock();
}
}
}