How to re-initialize DXAudioOut?

[PeterPanino]

Hi! If an external USB audio-interface is switched off AFTER a program with a TDXAudioOut control instance has been started, the DXAudioOut.DeviceCount property is not anymore correct.

So how can DXAudioOut be re-initialized, so its DeviceCount does not anymore contain the switched off audio-interface?

[RuudNL]

I suppose the easiest way to solve this, is to detect the removal of an USB device (for example with  MahUSB.pas) and scan again for available devices.

Op zondag 14 oktober 2012 14:41:03 UTC+2 schreef PeterPanino het volgende:

[PeterPanino]

Hi! How can I scan again for available devices? The DXAudioOut component still reports the previous audio devices (with DeviceCount and DeviceName), AFTER an audio device has been connected or disconnected.

[Ross Levis]

I modified the code in ACS_DXAudio.pas.  I don’t remember what it was many years ago but I now have this

 

procedure TDXAudioOut.LoadDevices;

begin

  DSW_EnumerateOutputDevices(@Devices);

  FDeviceCount := Devices.devcount;

end;

 

And this is defined in the Public section of the class so I can call it from within my app.

 

Ross.

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