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/* ----------------------------------------------------------------------------
* 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.
* ----------------------------------------------------------------------------
*/
/*
Title: USBGenericDescriptor implementation
About: Purpose
Implementation of the USBGenericDescriptor class.
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "USBGenericDescriptor.h"
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Returns the length of a descriptor.
/// \param descriptor Pointer to a USBGenericDescriptor instance.
/// \return Length of descriptor in bytes.
//------------------------------------------------------------------------------
unsigned int USBGenericDescriptor_GetLength(
const USBGenericDescriptor *descriptor)
{
return descriptor->bLength;
}
//------------------------------------------------------------------------------
/// Returns the type of a descriptor.
/// \param descriptor Pointer to a USBGenericDescriptor instance.
/// \return Type of descriptor.
//------------------------------------------------------------------------------
unsigned char USBGenericDescriptor_GetType(
const USBGenericDescriptor *descriptor)
{
return descriptor->bDescriptorType;
}
//------------------------------------------------------------------------------
/// Returns a pointer to the descriptor right after the given one, when
/// parsing a Configuration descriptor.
/// \param descriptor - Pointer to a USBGenericDescriptor instance.
/// \return Pointer to the next descriptor.
//------------------------------------------------------------------------------
USBGenericDescriptor *USBGenericDescriptor_GetNextDescriptor(
const USBGenericDescriptor *descriptor)
{
return (USBGenericDescriptor *)
(((char *) descriptor) + USBGenericDescriptor_GetLength(descriptor));
}
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