SAMV71 Xplained Ultra Software Package 1.3

AUDGenericRequest.c

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00001 /* ----------------------------------------------------------------------------
00002  *         SAM Software Package License
00003  * ----------------------------------------------------------------------------
00004  * Copyright (c) 2014, Atmel Corporation
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00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions are met:
00010  *
00011  * - Redistributions of source code must retain the above copyright notice,
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00013  *
00014  * Atmel's name may not be used to endorse or promote products derived from
00015  * this software without specific prior written permission.
00016  *
00017  * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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00029 
00030 /** \file
00031  *
00032  * This file implements functions for USB AUDIO class requests.
00033  */
00034 
00035 /** \addtogroup usb_audio
00036  *@{
00037  */
00038 
00039 /*----------------------------------------------------------------------------
00040  *         Headers
00041  *----------------------------------------------------------------------------*/
00042 
00043 #include "AUDRequests.h"
00044 
00045 /*----------------------------------------------------------------------------
00046  *         Exported functions
00047  *----------------------------------------------------------------------------*/
00048 
00049 /**
00050  * Returns the ID of the unit or terminal targeted by an USB audio request.
00051  * \param request  Pointer to a USBGenericRequest instance.
00052  */
00053 uint8_t AUDGenericRequest_GetEntity(const USBGenericRequest *request)
00054 {
00055     return ((USBGenericRequest_GetIndex(request) >> 8) & 0xFF);
00056 }
00057 
00058 /**
00059  * Returns the ID of the interface targeted by an USB audio request.
00060  * \param request  Pointer to a USBGenericRequest instance.
00061  */
00062 uint8_t AUDGenericRequest_GetInterface(const USBGenericRequest *request)
00063 {
00064     return (USBGenericRequest_GetIndex(request) & 0xFF);
00065 }
00066 
00067 /**@}*/
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