AUDIO_IO_ERROR_INVALID_OPERATION = TIZEN_ERROR_INVALID_OPERATION, /**< Invalid operation */
AUDIO_IO_ERROR_PERMISSION_DENIED = TIZEN_ERROR_PERMISSION_DENIED, /**< Device open error by security */
AUDIO_IO_ERROR_NOT_SUPPORTED = TIZEN_ERROR_NOT_SUPPORTED, /**< Not supported */
+ AUDIO_IO_ERROR_DEVICE_POLICY_RESTRICTION = TIZEN_ERROR_DEVICE_POLICY_RESTRICTION, /**< Device policy restriction (Since 3.0) */
AUDIO_IO_ERROR_DEVICE_NOT_OPENED = TIZEN_ERROR_AUDIO_IO | 0x01, /**< Device open error */
AUDIO_IO_ERROR_DEVICE_NOT_CLOSED = TIZEN_ERROR_AUDIO_IO | 0x02, /**< Device close error */
AUDIO_IO_ERROR_INVALID_BUFFER = TIZEN_ERROR_AUDIO_IO | 0x03, /**< Invalid buffer pointer */
* @retval #AUDIO_IO_ERROR_NONE Successful
* @retval #AUDIO_IO_ERROR_INVALID_PARAMETER Invalid parameter
* @retval #AUDIO_IO_ERROR_NOT_SUPPORTED Not supported
+ * @retval #AUDIO_IO_ERROR_DEVICE_POLICY_RESTRICTION Device policy restriction
* @retval #AUDIO_IO_ERROR_INVALID_STATE Invalid state
*
* @post The state will be #AUDIO_IO_STATE_RUNNING.