/elec/audio-switcher

/*

  AUDIO SWITCHER

  Based on a serial device demonstration from the LUFA project

  (www.lufa-lib.org).  LUFA is Copyright (C) Dean Camera, 2012.

  Changes made to the serial device demonstration program are

  Copyright (C) Tim Marston, 2012.

  For more information:

    * see README, or

    * visit http://ed.am/

*/

/*

  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this

  software and its documentation for any purpose is hereby granted

  without fee, provided that the above copyright notice appear in

  all copies and that both that the copyright notice and this

  permission notice and warranty disclaimer appear in supporting

  documentation, and that the name of the author not be used in

  advertising or publicity pertaining to distribution of the

  software without specific, written prior permission.

  The author disclaim all warranties with regard to this

  software, including all implied warranties of merchantability

  and fitness.  In no event shall the author be liable for any

  special, indirect or consequential damages or any damages

  whatsoever resulting from loss of use, data or profits, whether

  in an action of contract, negligence or other tortious action,

  arising out of or in connection with the use or performance of

  this software.

*/

/** \file

 *

 *  Header file for Descriptors.c.

 */

#ifndef _DESCRIPTORS_H_

#define _DESCRIPTORS_H_

	/* Includes: */

		#include <avr/pgmspace.h>

		#include <LUFA/Drivers/USB/USB.h>

	/* Macros: */

		/** Endpoint address of the CDC device-to-host notification IN endpoint. */

		#define CDC_NOTIFICATION_EPADDR        (ENDPOINT_DIR_IN  | 2)

		/** Endpoint address of the CDC device-to-host data IN endpoint. */

		#define CDC_TX_EPADDR                  (ENDPOINT_DIR_IN  | 3)

		/** Endpoint address of the CDC host-to-device data OUT endpoint. */

		#define CDC_RX_EPADDR                  (ENDPOINT_DIR_OUT | 4)

		/** Size in bytes of the CDC device-to-host notification IN endpoint. */

		#define CDC_NOTIFICATION_EPSIZE        8

		/** Size in bytes of the CDC data IN and OUT endpoints. */

		#define CDC_TXRX_EPSIZE                16

	/* Type Defines: */

		/** Type define for the device configuration descriptor structure. This must be defined in the

		 *  application code, as the configuration descriptor contains several sub-descriptors which

		 *  vary between devices, and which describe the device's usage to the host.

		 */

		typedef struct

		{

			USB_Descriptor_Configuration_Header_t    Config;

			// CDC Control Interface

			USB_Descriptor_Interface_t               CDC_CCI_Interface;

			USB_CDC_Descriptor_FunctionalHeader_t    CDC_Functional_Header;

			USB_CDC_Descriptor_FunctionalACM_t       CDC_Functional_ACM;

			USB_CDC_Descriptor_FunctionalUnion_t     CDC_Functional_Union;

			USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;

			// CDC Data Interface

			USB_Descriptor_Interface_t               CDC_DCI_Interface;

			USB_Descriptor_Endpoint_t                CDC_DataOutEndpoint;

			USB_Descriptor_Endpoint_t                CDC_DataInEndpoint;

		} USB_Descriptor_Configuration_t;

	/* Function Prototypes: */

		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,

		                                    const uint8_t wIndex,

		                                    const void** const DescriptorAddress)

		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);

#endif