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author | Jack Humbert <jack.humb@gmail.com> | 2017-07-07 21:33:29 +0200 |
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committer | GitHub <noreply@github.com> | 2017-07-07 21:33:29 +0200 |
commit | 9de443cbf10ac41bc15762c9c83f138f51dd3b9a (patch) | |
tree | d8ddcb428e0b7d9773a1e52c42b60bdca2658beb /lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.c | |
parent | 88b3d051b21cb1ddacc6353c5d59b19f03f3a242 (diff) | |
parent | 1c26468ad5a0701e244c99cbcbc547c93b75d515 (diff) | |
download | qmk_firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.gz qmk_firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.xz |
Merge pull request #1471 from qmk/lufa_lib
Update LUFA and move it to /lib/lufa
Diffstat (limited to 'lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.c')
-rw-r--r-- | lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.c | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.c b/lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.c new file mode 100644 index 000000000..62f10c4e2 --- /dev/null +++ b/lib/lufa/LUFA/Drivers/USB/Class/Common/HIDParser.c @@ -0,0 +1,389 @@ +/* + 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. +*/ + +#define __INCLUDE_FROM_USB_DRIVER +#define __INCLUDE_FROM_HID_DRIVER +#include "HIDParser.h" + +uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, + uint16_t ReportSize, + HID_ReportInfo_t* const ParserData) +{ + HID_StateTable_t StateTable[HID_STATETABLE_STACK_DEPTH]; + HID_StateTable_t* CurrStateTable = &StateTable[0]; + HID_CollectionPath_t* CurrCollectionPath = NULL; + HID_ReportSizeInfo_t* CurrReportIDInfo = &ParserData->ReportIDSizes[0]; + uint16_t UsageList[HID_USAGE_STACK_DEPTH]; + uint8_t UsageListSize = 0; + HID_MinMax_t UsageMinMax = {0, 0}; + + memset(ParserData, 0x00, sizeof(HID_ReportInfo_t)); + memset(CurrStateTable, 0x00, sizeof(HID_StateTable_t)); + memset(CurrReportIDInfo, 0x00, sizeof(HID_ReportSizeInfo_t)); + + ParserData->TotalDeviceReports = 1; + + while (ReportSize) + { + uint8_t HIDReportItem = *ReportData; + uint32_t ReportItemData; + + ReportData++; + ReportSize--; + + switch (HIDReportItem & HID_RI_DATA_SIZE_MASK) + { + case HID_RI_DATA_BITS_32: + ReportItemData = (((uint32_t)ReportData[3] << 24) | ((uint32_t)ReportData[2] << 16) | + ((uint16_t)ReportData[1] << 8) | ReportData[0]); + ReportSize -= 4; + ReportData += 4; + break; + + case HID_RI_DATA_BITS_16: + ReportItemData = (((uint16_t)ReportData[1] << 8) | (ReportData[0])); + ReportSize -= 2; + ReportData += 2; + break; + + case HID_RI_DATA_BITS_8: + ReportItemData = ReportData[0]; + ReportSize -= 1; + ReportData += 1; + break; + + default: + ReportItemData = 0; + break; + } + + switch (HIDReportItem & (HID_RI_TYPE_MASK | HID_RI_TAG_MASK)) + { + case HID_RI_PUSH(0): + if (CurrStateTable == &StateTable[HID_STATETABLE_STACK_DEPTH - 1]) + return HID_PARSE_HIDStackOverflow; + + memcpy((CurrStateTable + 1), + CurrStateTable, + sizeof(HID_ReportItem_t)); + + CurrStateTable++; + break; + + case HID_RI_POP(0): + if (CurrStateTable == &StateTable[0]) + return HID_PARSE_HIDStackUnderflow; + + CurrStateTable--; + break; + + case HID_RI_USAGE_PAGE(0): + if ((HIDReportItem & HID_RI_DATA_SIZE_MASK) == HID_RI_DATA_BITS_32) + CurrStateTable->Attributes.Usage.Page = (ReportItemData >> 16); + + CurrStateTable->Attributes.Usage.Page = ReportItemData; + break; + + case HID_RI_LOGICAL_MINIMUM(0): + CurrStateTable->Attributes.Logical.Minimum = ReportItemData; + break; + + case HID_RI_LOGICAL_MAXIMUM(0): + CurrStateTable->Attributes.Logical.Maximum = ReportItemData; + break; + + case HID_RI_PHYSICAL_MINIMUM(0): + CurrStateTable->Attributes.Physical.Minimum = ReportItemData; + break; + + case HID_RI_PHYSICAL_MAXIMUM(0): + CurrStateTable->Attributes.Physical.Maximum = ReportItemData; + break; + + case HID_RI_UNIT_EXPONENT(0): + CurrStateTable->Attributes.Unit.Exponent = ReportItemData; + break; + + case HID_RI_UNIT(0): + CurrStateTable->Attributes.Unit.Type = ReportItemData; + break; + + case HID_RI_REPORT_SIZE(0): + CurrStateTable->Attributes.BitSize = ReportItemData; + break; + + case HID_RI_REPORT_COUNT(0): + CurrStateTable->ReportCount = ReportItemData; + break; + + case HID_RI_REPORT_ID(0): + CurrStateTable->ReportID = ReportItemData; + + if (ParserData->UsingReportIDs) + { + CurrReportIDInfo = NULL; + + for (uint8_t i = 0; i < ParserData->TotalDeviceReports; i++) + { + if (ParserData->ReportIDSizes[i].ReportID == CurrStateTable->ReportID) + { + CurrReportIDInfo = &ParserData->ReportIDSizes[i]; + break; + } + } + + if (CurrReportIDInfo == NULL) + { + if (ParserData->TotalDeviceReports == HID_MAX_REPORT_IDS) + return HID_PARSE_InsufficientReportIDItems; + + CurrReportIDInfo = &ParserData->ReportIDSizes[ParserData->TotalDeviceReports++]; + memset(CurrReportIDInfo, 0x00, sizeof(HID_ReportSizeInfo_t)); + } + } + + ParserData->UsingReportIDs = true; + + CurrReportIDInfo->ReportID = CurrStateTable->ReportID; + break; + + case HID_RI_USAGE(0): + if (UsageListSize == HID_USAGE_STACK_DEPTH) + return HID_PARSE_UsageListOverflow; + + UsageList[UsageListSize++] = ReportItemData; + break; + + case HID_RI_USAGE_MINIMUM(0): + UsageMinMax.Minimum = ReportItemData; + break; + + case HID_RI_USAGE_MAXIMUM(0): + UsageMinMax.Maximum = ReportItemData; + break; + + case HID_RI_COLLECTION(0): + if (CurrCollectionPath == NULL) + { + CurrCollectionPath = &ParserData->CollectionPaths[0]; + } + else + { + HID_CollectionPath_t* ParentCollectionPath = CurrCollectionPath; + + CurrCollectionPath = &ParserData->CollectionPaths[1]; + + while (CurrCollectionPath->Parent != NULL) + { + if (CurrCollectionPath == &ParserData->CollectionPaths[HID_MAX_COLLECTIONS - 1]) + return HID_PARSE_InsufficientCollectionPaths; + + CurrCollectionPath++; + } + + CurrCollectionPath->Parent = ParentCollectionPath; + } + + CurrCollectionPath->Type = ReportItemData; + CurrCollectionPath->Usage.Page = CurrStateTable->Attributes.Usage.Page; + + if (UsageListSize) + { + CurrCollectionPath->Usage.Usage = UsageList[0]; + + for (uint8_t i = 1; i < UsageListSize; i++) + UsageList[i - 1] = UsageList[i]; + + UsageListSize--; + } + else if (UsageMinMax.Minimum <= UsageMinMax.Maximum) + { + CurrCollectionPath->Usage.Usage = UsageMinMax.Minimum++; + } + + break; + + case HID_RI_END_COLLECTION(0): + if (CurrCollectionPath == NULL) + return HID_PARSE_UnexpectedEndCollection; + + CurrCollectionPath = CurrCollectionPath->Parent; + break; + + case HID_RI_INPUT(0): + case HID_RI_OUTPUT(0): + case HID_RI_FEATURE(0): + for (uint8_t ReportItemNum = 0; ReportItemNum < CurrStateTable->ReportCount; ReportItemNum++) + { + HID_ReportItem_t NewReportItem; + + memcpy(&NewReportItem.Attributes, + &CurrStateTable->Attributes, + sizeof(HID_ReportItem_Attributes_t)); + + NewReportItem.ItemFlags = ReportItemData; + NewReportItem.CollectionPath = CurrCollectionPath; + NewReportItem.ReportID = CurrStateTable->ReportID; + + if (UsageListSize) + { + NewReportItem.Attributes.Usage.Usage = UsageList[0]; + + for (uint8_t i = 1; i < UsageListSize; i++) + UsageList[i - 1] = UsageList[i]; + + UsageListSize--; + } + else if (UsageMinMax.Minimum <= UsageMinMax.Maximum) + { + NewReportItem.Attributes.Usage.Usage = UsageMinMax.Minimum++; + } + + uint8_t ItemTypeTag = (HIDReportItem & (HID_RI_TYPE_MASK | HID_RI_TAG_MASK)); + + if (ItemTypeTag == HID_RI_INPUT(0)) + NewReportItem.ItemType = HID_REPORT_ITEM_In; + else if (ItemTypeTag == HID_RI_OUTPUT(0)) + NewReportItem.ItemType = HID_REPORT_ITEM_Out; + else + NewReportItem.ItemType = HID_REPORT_ITEM_Feature; + + NewReportItem.BitOffset = CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType]; + + CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType] += CurrStateTable->Attributes.BitSize; + + ParserData->LargestReportSizeBits = MAX(ParserData->LargestReportSizeBits, CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType]); + + if (ParserData->TotalReportItems == HID_MAX_REPORTITEMS) + return HID_PARSE_InsufficientReportItems; + + memcpy(&ParserData->ReportItems[ParserData->TotalReportItems], + &NewReportItem, sizeof(HID_ReportItem_t)); + + if (!(ReportItemData & HID_IOF_CONSTANT) && CALLBACK_HIDParser_FilterHIDReportItem(&NewReportItem)) + ParserData->TotalReportItems++; + } + + break; + + default: + break; + } + + if ((HIDReportItem & HID_RI_TYPE_MASK) == HID_RI_TYPE_MAIN) + { + UsageMinMax.Minimum = 0; + UsageMinMax.Maximum = 0; + UsageListSize = 0; + } + } + + if (!(ParserData->TotalReportItems)) + return HID_PARSE_NoUnfilteredReportItems; + + return HID_PARSE_Successful; +} + +bool USB_GetHIDReportItemInfo(const uint8_t* ReportData, + HID_ReportItem_t* const ReportItem) +{ + if (ReportItem == NULL) + return false; + + uint16_t DataBitsRem = ReportItem->Attributes.BitSize; + uint16_t CurrentBit = ReportItem->BitOffset; + uint32_t BitMask = (1 << 0); + + if (ReportItem->ReportID) + { + if (ReportItem->ReportID != ReportData[0]) + return false; + + ReportData++; + } + + ReportItem->PreviousValue = ReportItem->Value; + ReportItem->Value = 0; + + while (DataBitsRem--) + { + if (ReportData[CurrentBit / 8] & (1 << (CurrentBit % 8))) + ReportItem->Value |= BitMask; + + CurrentBit++; + BitMask <<= 1; + } + + return true; +} + +void USB_SetHIDReportItemInfo(uint8_t* ReportData, + HID_ReportItem_t* const ReportItem) +{ + if (ReportItem == NULL) + return; + + uint16_t DataBitsRem = ReportItem->Attributes.BitSize; + uint16_t CurrentBit = ReportItem->BitOffset; + uint32_t BitMask = (1 << 0); + + if (ReportItem->ReportID) + { + ReportData[0] = ReportItem->ReportID; + ReportData++; + } + + ReportItem->PreviousValue = ReportItem->Value; + + while (DataBitsRem--) + { + if (ReportItem->Value & BitMask) + ReportData[CurrentBit / 8] |= (1 << (CurrentBit % 8)); + + CurrentBit++; + BitMask <<= 1; + } +} + +uint16_t USB_GetHIDReportSize(HID_ReportInfo_t* const ParserData, + const uint8_t ReportID, + const uint8_t ReportType) +{ + for (uint8_t i = 0; i < HID_MAX_REPORT_IDS; i++) + { + uint16_t ReportSizeBits = ParserData->ReportIDSizes[i].ReportSizeBits[ReportType]; + + if (ParserData->ReportIDSizes[i].ReportID == ReportID) + return (ReportSizeBits / 8) + ((ReportSizeBits % 8) ? 1 : 0); + } + + return 0; +} + |