The IOCTL_BTHHFP_DEVICE_GET_DESCRIPTOR2 IOCTL Gets descriptive information about the paired Handsfree profile (HFP) device. The audio driver issues the IOCTL_BTHHFP_DEVICE_GET_DESCRIPTOR control code to get information about an enabled GUID_DEVINTERFACE_BLUETOOTH_HFP_SCO_HCIBYPASS device interface. The IOCTL_BTHHFP_DEVICE_GET_CONTAINERID IOCTL Gets the PnP Container ID of the Bluetooth device. The IOCTL_BTHHFP_DEVICE_GET_CONNECTION_STATUS_UPDATE IOCTL Gets a connection status update. IOCTL_BTHHFP_DEVICE_GET_CONNECTION_STATUS_UPDATE This helps the audio driver determine the sampling rate for the data. IOCTLsĪn audio driver can send an IOCTL_BTHHFP_DEVICE_GET_CODEC_ID control code to query the Bluetooth driver stack about the codec ID used by the HFP service. To develop Audio drivers, you can use these headers:įor programming information, see Audio Devices Design Guide. These drivers control audio hardware that render and capture streams containing audio data. These headers are used to create Microsoft Windows Driver Model (WDM) audio drivers.
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