| /* ---------------------------------------------------------------------------- |
| * ATMEL Microcontroller Software Support |
| * ---------------------------------------------------------------------------- |
| * Copyright (c) 2008, Atmel Corporation |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the disclaimer below. |
| * |
| * Atmel's name may not be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
| * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, |
| * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ---------------------------------------------------------------------------- |
| */ |
| |
| /** \file |
| * |
| * This file implements functions for USB AUDIO class feature unit requests. |
| */ |
| |
| /** \addtogroup usb_audio |
| *@{ |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| * Headers |
| *----------------------------------------------------------------------------*/ |
| |
| #include "AUDRequests.h" |
| |
| /*---------------------------------------------------------------------------- |
| * Exported functions |
| *----------------------------------------------------------------------------*/ |
| |
| /** |
| * Returns the control selector value indicating the target of a Feature Unit |
| * request. |
| * \param request Pointer to a USBGenericRequest instance. |
| * \sa usb_audio_ctrl_sel USB Audio Control selector values |
| */ |
| uint8_t AUDFeatureUnitRequest_GetControl(const USBGenericRequest *request) |
| { |
| return ((USBGenericRequest_GetValue(request) >> 8) & 0xFF); |
| } |
| |
| /** |
| * Returns the channel number of a Feature unit which should be altered by the |
| * given request. |
| * \param request Pointer to a USBGenericRequest instance. |
| */ |
| uint8_t AUDFeatureUnitRequest_GetChannel(const USBGenericRequest *request) |
| { |
| return (USBGenericRequest_GetValue(request) & 0xFF); |
| } |
| |
| /**@}*/ |