/** Retrieves the device ID of the current video recording device.
*
* @param deviceId The device ID of the current video recording device.
*
* @return
* - 0: Success.
* - < 0: Failure.
*/
public override int GetCurrentVideoDevice(ref string deviceId)
{
if (_mEngine == null)
{
return((int)ERROR_CODE.ERROR_NOT_INIT_ENGINE);
}
if (GetVideoDeviceCount() > 0)
{
System.IntPtr videoDeviceId = Marshal.AllocHGlobal(512);
int ret = IRtcEngineNative.getCurrentVideoDevice(videoDeviceId);
deviceId = Marshal.PtrToStringAnsi(videoDeviceId);
Marshal.FreeHGlobal(videoDeviceId);
return(ret);
}
else
{
return((int)ERROR_CODE.ERROR_NO_DEVICE_PLUGIN);
}
}