Files
simtrace2/sam3s_example/atmel_softpack_libraries/usb/common/audio/AUDGenericRequest.c
2014-12-23 13:03:36 +01:00

68 lines
2.6 KiB
C

/* ----------------------------------------------------------------------------
* 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 requests.
*/
/** \addtogroup usb_audio
*@{
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "AUDRequests.h"
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
/**
* Returns the ID of the unit or terminal targetted by an USB audio request.
* \param request Pointer to a USBGenericRequest instance.
*/
uint8_t AUDGenericRequest_GetEntity(const USBGenericRequest *request)
{
return ((USBGenericRequest_GetIndex(request) >> 8) & 0xFF);
}
/**
* Returns the ID of the interface targetted by an USB audio request.
* \param request Pointer to a USBGenericRequest instance.
*/
uint8_t AUDGenericRequest_GetInterface(const USBGenericRequest *request)
{
return (USBGenericRequest_GetIndex(request) & 0xFF);
}
/**@}*/