/*
             LUFA Library
     Copyright (C) Dean Camera, 2009.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, and distribute this software
  and its documentation for any purpose and without fee is hereby
  granted, 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.
*/

/** \ingroup Group_USBClassHID
 *  @defgroup Group_USBClassHIDDevice HID Class Device Mode Driver
 *
 *  \section Module Description
 *  Device Mode USB Class driver framework interface, for the HID USB Class driver.
 *
 *  @{
 */
 
#ifndef _HID_CLASS_DEVICE_H_
#define _HID_CLASS_DEVICE_H_

	/* Includes: */
		#include "../../USB.h"
		#include "../Common/HID.h"

		#include <string.h>

	/* Enable C linkage for C++ Compilers: */
		#if defined(__cplusplus)
			extern "C" {
		#endif

	/* Function Prototypes: */
		/** Configures the endpoints of a given HID interface, ready for use. This should be linked to the library
		 *  \ref EVENT_USB_ConfigurationChanged() event so that the endpoints are configured when the configuration
		 *  containing the given HID interface is selected.
		 *
		 *  \param HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
		 *
		 *  \return Boolean true if the endpoints were sucessfully configured, false otherwise
		 */
		bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_t* HIDInterfaceInfo);
		
		/** Processes incomming control requests from the host, that are directed to the given HID class interface. This should be
		 *  linked to the library \ref EVENT_USB_UnhandledControlPacket() event.
		 *
		 *  \param HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
		 */		
		void HID_Device_ProcessControlPacket(USB_ClassInfo_HID_t* HIDInterfaceInfo);

		/** General management task for a given HID class interface, required for the correct operation of the interface. This should
		 *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
		 *
		 *  \param HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
		 */
		void HID_Device_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo);
		
		/** HID class driver callback for the user creation of a HID input report. This callback may fire in response to either
		 *  HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback the
		 *  user is responsible for the creation of the next HID input report to be sent to the host.
		 *
		 *  \param HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
		 *  \param ReportID  If preset to a non-zero value, this is the report ID being requested by the host. If zero, this should
		 *                   be set to the report ID of the generated HID input report. If multiple reports are not sent via the
		 *                   given HID interface, this parameter should be ignored.
		 *  \param ReportData  Pointer to a buffer where the generated HID report should be stored.
		 *
		 *  \return  Number of bytes in the generated input report, or zero if no report is to be sent
		 */
		uint16_t CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, uint8_t* ReportID, void* ReportData);

		/** HID class driver callback for the user processing of a received HID input report. This callback may fire in response to
		 *  either HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback
		 *  the user is responsible for the processing of the received HID output report from the host.
		 *
		 *  \param HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
		 *  \param ReportID  Report ID of the received output report. If multiple reports are not received via the given HID
		 *                   interface, this parameter should be ignored.
		 *  \param ReportData  Pointer to a buffer where the received HID report is stored.
		 *  \param ReportSize  Size in bytes of the received report from the host.
		 */
		void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, uint8_t ReportID, void* ReportData,
		                                          uint16_t ReportSize);

	/* Disable C linkage for C++ Compilers: */
		#if defined(__cplusplus)
			}
		#endif
		
#endif

/** @} */