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Diffstat (limited to 'lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.h')
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| -rw-r--r-- | lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.h | 364 |
2 files changed, 0 insertions, 364 deletions
diff --git a/lib/lufa b/lib/lufa new file mode 160000 +Subproject ce10f7642b0459e409839b23cc91498945119b4 diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.h b/lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.h deleted file mode 100644 index 023316d7ea..0000000000 --- a/lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.h +++ /dev/null @@ -1,364 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2017. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2017 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 disclaims 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 - * \brief USB Human Interface Device (HID) Class report descriptor parser. - * - * This file allows for the easy parsing of complex HID report descriptors, which describes the data that - * a HID device transmits to the host. It also provides an easy API for extracting and processing the data - * elements inside a HID report sent from an attached HID device. - */ - -/** \ingroup Group_USB - * \defgroup Group_HIDParser HID Report Parser - * \brief USB Human Interface Device (HID) Class report descriptor parser. - * - * \section Sec_HIDParser_Dependencies Module Source Dependencies - * The following files must be built with any user project that uses this module: - * - LUFA/Drivers/USB/Class/Host/HIDParser.c <i>(Makefile source module name: LUFA_SRC_USB)</i> - * - * \section Sec_HIDParser_ModDescription Module Description - * Human Interface Device (HID) class report descriptor parser. This module implements a parser than is - * capable of processing a complete HID report descriptor, and outputting a flat structure containing the - * contents of the report in an a more friendly format. The parsed data may then be further processed and used - * within an application to process sent and received HID reports to and from an attached HID device. - * - * A HID report descriptor consists of a set of HID report items, which describe the function and layout - * of data exchanged between a HID device and a host, including both the physical encoding of each item - * (such as a button, key press or joystick axis) in the sent and received data packets - known as "reports" - - * as well as other information about each item such as the usages, data range, physical location and other - * characteristics. In this way a HID device can retain a high degree of flexibility in its capabilities, as it - * is not forced to comply with a given report layout or feature-set. - * - * This module also contains routines for the processing of data in an actual HID report, using the parsed report - * descriptor data as a guide for the encoding. - * - * @{ - */ - -#ifndef __HIDPARSER_H__ -#define __HIDPARSER_H__ - - /* Includes: */ - #include "../../../../Common/Common.h" - - #include "HIDReportData.h" - #include "HIDClassCommon.h" - - /* Enable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - extern "C" { - #endif - - /* Macros: */ - #if !defined(HID_STATETABLE_STACK_DEPTH) || defined(__DOXYGEN__) - /** Constant indicating the maximum stack depth of the state table. A larger state table - * allows for more PUSH/POP report items to be nested, but consumes more memory. By default - * this is set to 2 levels (allowing non-nested PUSH items) but this can be overridden by - * defining \c HID_STATETABLE_STACK_DEPTH to another value in the user project makefile, passing the - * define to the compiler using the -D compiler switch. - */ - #define HID_STATETABLE_STACK_DEPTH 2 - #endif - - #if !defined(HID_USAGE_STACK_DEPTH) || defined(__DOXYGEN__) - /** Constant indicating the maximum stack depth of the usage table. A larger usage table - * allows for more USAGE items to be indicated sequentially for REPORT COUNT entries of more than - * one, but requires more stack space. By default this is set to 8 levels (allowing for a report - * item with a count of 8) but this can be overridden by defining \c HID_USAGE_STACK_DEPTH to another - * value in the user project makefile, passing the define to the compiler using the -D compiler - * switch. - */ - #define HID_USAGE_STACK_DEPTH 8 - #endif - - #if !defined(HID_MAX_COLLECTIONS) || defined(__DOXYGEN__) - /** Constant indicating the maximum number of COLLECTION items (nested or unnested) that can be - * processed in the report item descriptor. A large value allows for more COLLECTION items to be - * processed, but consumes more memory. By default this is set to 10 collections, but this can be - * overridden by defining \c HID_MAX_COLLECTIONS to another value in the user project makefile, passing - * the define to the compiler using the -D compiler switch. - */ - #define HID_MAX_COLLECTIONS 10 - #endif - - #if !defined(HID_MAX_REPORTITEMS) || defined(__DOXYGEN__) - /** Constant indicating the maximum number of report items (IN, OUT or FEATURE) that can be processed - * in the report item descriptor and stored in the user HID Report Info structure. A large value allows - * for more report items to be stored, but consumes more memory. By default this is set to 20 items, - * but this can be overridden by defining \c HID_MAX_REPORTITEMS to another value in the user project - * makefile, and passing the define to the compiler using the -D compiler switch. - */ - #define HID_MAX_REPORTITEMS 20 - #endif - - #if !defined(HID_MAX_REPORT_IDS) || defined(__DOXYGEN__) - /** Constant indicating the maximum number of unique report IDs that can be processed in the report item - * descriptor for the report size information array in the user HID Report Info structure. A large value - * allows for more report ID report sizes to be stored, but consumes more memory. By default this is set - * to 10 items, but this can be overridden by defining \c HID_MAX_REPORT_IDS to another value in the user project - * makefile, and passing the define to the compiler using the -D compiler switch. Note that IN, OUT and FEATURE - * items sharing the same report ID consume only one size item in the array. - */ - #define HID_MAX_REPORT_IDS 10 - #endif - - /** Returns the value a given HID report item (once its value has been fetched via \ref USB_GetHIDReportItemInfo()) - * left-aligned to the given data type. This allows for signed data to be interpreted correctly, by shifting the data - * leftwards until the data's sign bit is in the correct position. - * - * \param[in] ReportItem HID Report Item whose retrieved value is to be aligned. - * \param[in] Type Data type to align the HID report item's value to. - * - * \return Left-aligned data of the given report item's pre-retrieved value for the given datatype. - */ - #define HID_ALIGN_DATA(ReportItem, Type) ((Type)(ReportItem->Value << ((8 * sizeof(Type)) - ReportItem->Attributes.BitSize))) - - /* Public Interface - May be used in end-application: */ - /* Enums: */ - /** Enum for the possible error codes in the return value of the \ref USB_ProcessHIDReport() function. */ - enum HID_Parse_ErrorCodes_t - { - HID_PARSE_Successful = 0, /**< Successful parse of the HID report descriptor, no error. */ - HID_PARSE_HIDStackOverflow = 1, /**< More than \ref HID_STATETABLE_STACK_DEPTH nested PUSHes in the report. */ - HID_PARSE_HIDStackUnderflow = 2, /**< A POP was found when the state table stack was empty. */ - HID_PARSE_InsufficientReportItems = 3, /**< More than \ref HID_MAX_REPORTITEMS report items in the report. */ - HID_PARSE_UnexpectedEndCollection = 4, /**< An END COLLECTION item found without matching COLLECTION item. */ - HID_PARSE_InsufficientCollectionPaths = 5, /**< More than \ref HID_MAX_COLLECTIONS collections in the report. */ - HID_PARSE_UsageListOverflow = 6, /**< More than \ref HID_USAGE_STACK_DEPTH usages listed in a row. */ - HID_PARSE_InsufficientReportIDItems = 7, /**< More than \ref HID_MAX_REPORT_IDS report IDs in the device. */ - HID_PARSE_NoUnfilteredReportItems = 8, /**< All report items from the device were filtered by the filtering callback routine. */ - }; - - /* Type Defines: */ - /** \brief HID Parser Report Item Min/Max Structure. - * - * Type define for an attribute with both minimum and maximum values (e.g. Logical Min/Max). - */ - typedef struct - { - uint32_t Minimum; /**< Minimum value for the attribute. */ - uint32_t Maximum; /**< Maximum value for the attribute. */ - } HID_MinMax_t; - - /** \brief HID Parser Report Item Unit Structure. - * - * Type define for the Unit attributes of a report item. - */ - typedef struct - { - uint32_t Type; /**< Unit type (refer to HID specifications for details). */ - uint8_t Exponent; /**< Unit exponent (refer to HID specifications for details). */ - } HID_Unit_t; - - /** \brief HID Parser Report Item Usage Structure. - * - * Type define for the Usage attributes of a report item. - */ - typedef struct - { - uint16_t Page; /**< Usage page of the report item. */ - uint16_t Usage; /**< Usage of the report item. */ - } HID_Usage_t; - - /** \brief HID Parser Report Item Collection Path Structure. - * - * Type define for a COLLECTION object. Contains the collection attributes and a reference to the - * parent collection if any. - */ - typedef struct HID_CollectionPath - { - uint8_t Type; /**< Collection type (e.g. "Generic Desktop"). */ - HID_Usage_t Usage; /**< Collection usage. */ - struct HID_CollectionPath* Parent; /**< Reference to parent collection, or \c NULL if root collection. */ - } HID_CollectionPath_t; - - /** \brief HID Parser Report Item Attributes Structure. - * - * Type define for all the data attributes of a report item, except flags. - */ - typedef struct - { - uint8_t BitSize; /**< Size in bits of the report item's data. */ - - HID_Usage_t Usage; /**< Usage of the report item. */ - HID_Unit_t Unit; /**< Unit type and exponent of the report item. */ - HID_MinMax_t Logical; /**< Logical minimum and maximum of the report item. */ - HID_MinMax_t Physical; /**< Physical minimum and maximum of the report item. */ - } HID_ReportItem_Attributes_t; - - /** \brief HID Parser Report Item Details Structure. - * - * Type define for a report item (IN, OUT or FEATURE) layout attributes and other details. - */ - typedef struct - { - uint16_t BitOffset; /**< Bit offset in the IN, OUT or FEATURE report of the item. */ - uint8_t ItemType; /**< Report item type, a value in \ref HID_ReportItemTypes_t. */ - uint16_t ItemFlags; /**< Item data flags, a mask of \c HID_IOF_* constants. */ - uint8_t ReportID; /**< Report ID this item belongs to, or 0x00 if device has only one report */ - HID_CollectionPath_t* CollectionPath; /**< Collection path of the item. */ - - HID_ReportItem_Attributes_t Attributes; /**< Report item attributes. */ - - uint32_t Value; /**< Current value of the report item - use \ref HID_ALIGN_DATA() when processing - * a retrieved value so that it is aligned to a specific type. - */ - uint32_t PreviousValue; /**< Previous value of the report item. */ - } HID_ReportItem_t; - - /** \brief HID Parser Report Size Structure. - * - * Type define for a report item size information structure, to retain the size of a device's reports by ID. - */ - typedef struct - { - uint8_t ReportID; /**< Report ID of the report within the HID interface. */ - uint16_t ReportSizeBits[3]; /**< Total number of bits in each report type for the given Report ID, - * indexed by the \ref HID_ReportItemTypes_t enum. - */ - } HID_ReportSizeInfo_t; - - /** \brief HID Parser State Structure. - * - * Type define for a complete processed HID report, including all report item data and collections. - */ - typedef struct - { - uint8_t TotalReportItems; /**< Total number of report items stored in the \c ReportItems array. */ - HID_ReportItem_t ReportItems[HID_MAX_REPORTITEMS]; /**< Report items array, including all IN, OUT - * and FEATURE items. - */ - HID_CollectionPath_t CollectionPaths[HID_MAX_COLLECTIONS]; /**< All collection items, referenced - * by the report items. - */ - uint8_t TotalDeviceReports; /**< Number of reports within the HID interface */ - HID_ReportSizeInfo_t ReportIDSizes[HID_MAX_REPORT_IDS]; /**< Report sizes for each report in the interface */ - uint16_t LargestReportSizeBits; /**< Largest report that the attached device will generate, in bits */ - bool UsingReportIDs; /**< Indicates if the device has at least one REPORT ID - * element in its HID report descriptor. - */ - } HID_ReportInfo_t; - - /* Function Prototypes: */ - /** Function to process a given HID report returned from an attached device, and store it into a given - * \ref HID_ReportInfo_t structure. - * - * \param[in] ReportData Buffer containing the device's HID report table. - * \param[in] ReportSize Size in bytes of the HID report table. - * \param[out] ParserData Pointer to a \ref HID_ReportInfo_t instance for the parser output. - * - * \return A value in the \ref HID_Parse_ErrorCodes_t enum. - */ - uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, - uint16_t ReportSize, - HID_ReportInfo_t* const ParserData) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3); - - /** Extracts the given report item's value out of the given HID report and places it into the Value - * member of the report item's \ref HID_ReportItem_t structure. - * - * When called on a report with an item that exists in that report, this copies the report item's \c Value - * to its \c PreviousValue element for easy checking to see if an item's value has changed before processing - * a report. If the given item does not exist in the report, the function does not modify the report item's - * data. - * - * \param[in] ReportData Buffer containing an IN or FEATURE report from an attached device. - * \param[in,out] ReportItem Pointer to the report item of interest in a \ref HID_ReportInfo_t ReportItem array. - * - * \returns Boolean \c true if the item to retrieve was located in the given report, \c false otherwise. - */ - bool USB_GetHIDReportItemInfo(const uint8_t* ReportData, - HID_ReportItem_t* const ReportItem) ATTR_NON_NULL_PTR_ARG(1); - - /** Retrieves the given report item's value out of the \c Value member of the report item's - * \ref HID_ReportItem_t structure and places it into the correct position in the HID report - * buffer. The report buffer is assumed to have the appropriate bits cleared before calling - * this function (i.e., the buffer should be explicitly cleared before report values are added). - * - * When called, this copies the report item's \c Value element to its \c PreviousValue element for easy - * checking to see if an item's value has changed before sending a report. - * - * If the device has multiple HID reports, the first byte in the report is set to the report ID of the given item. - * - * \param[out] ReportData Buffer holding the current OUT or FEATURE report data. - * \param[in] ReportItem Pointer to the report item of interest in a \ref HID_ReportInfo_t ReportItem array. - */ - void USB_SetHIDReportItemInfo(uint8_t* ReportData, - HID_ReportItem_t* const ReportItem) ATTR_NON_NULL_PTR_ARG(1); - - /** Retrieves the size of a given HID report in bytes from its Report ID. - * - * \param[in] ParserData Pointer to a \ref HID_ReportInfo_t instance containing the parser output. - * \param[in] ReportID Report ID of the report whose size is to be determined. - * \param[in] ReportType Type of the report whose size is to be determined, a value from the - * \ref HID_ReportItemTypes_t enum. - * - * \return Size of the report in bytes, or \c 0 if the report does not exist. - */ - uint16_t USB_GetHIDReportSize(HID_ReportInfo_t* const ParserData, - const uint8_t ReportID, - const uint8_t ReportType) ATTR_CONST ATTR_NON_NULL_PTR_ARG(1); - - /** Callback routine for the HID Report Parser. This callback <b>must</b> be implemented by the user code when - * the parser is used, to determine what report IN, OUT and FEATURE item's information is stored into the user - * \ref HID_ReportInfo_t structure. This can be used to filter only those items the application will be using, so that - * no RAM is wasted storing the attributes for report items which will never be referenced by the application. - * - * Report item pointers passed to this callback function may be cached by the user application for later use - * when processing report items. This provides faster report processing in the user application than would - * a search of the entire parsed report item table for each received or sent report. - * - * \param[in] CurrentItem Pointer to the current report item for user checking. - * - * \return Boolean \c true if the item should be stored into the \ref HID_ReportInfo_t structure, \c false if - * it should be ignored. - */ - bool CALLBACK_HIDParser_FilterHIDReportItem(HID_ReportItem_t* const CurrentItem); - - /* Private Interface - For use in library only: */ - #if !defined(__DOXYGEN__) - /* Type Defines: */ - typedef struct - { - HID_ReportItem_Attributes_t Attributes; - uint8_t ReportCount; - uint8_t ReportID; - } HID_StateTable_t; - #endif - - /* Disable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - } - #endif - -#endif - -/** @} */ - |