IOCTL_AG_OPEN_AUDIO (Windows Embedded CE 6.0)

1/6/2010

This IOCTL opens a service level connection and an audio connection to the headset or the hands-free device.

Parameters

• hDeviceContext
  [in] Device context handle.

• fSelector
  [in] Equals IOCTL_AG_OPEN_AUDIO.

• cInBuffer
  Not used.

• pInBuffer
  Not used.

• cOutBuffer
  Not used.

• pOutBuffer
  Not used.

• pcDataReturned
  Not used.

Return Values

Returns TRUE if successful, FALSE otherwise. To obtain extended error information, call the GetLastError function.

Remarks

To close an audio connection to the headset, use the IOCTL_AG_CLOSE_AUDIO IOCTL.

To route audio to the headset or to the hands-free device independent of the Network Component, you must first open or close an audio connection.

OEM Extensibility Considerations

To route audio to the Bluetooth hardware outside the call context, the application can send IOCTL_AG_OPEN_AUDIO to the AG service. The AG service automatically sends the WODM_BT_SCO_AUDIO_CONTROL message to the audio driver when an incoming call is answered by the hands-free device and outgoing calls are placed with the phone connected to the hands-free device.

Requirements

See Also

Concepts

Bluetooth OS IOCTLs
Audio Gateway Core Component