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[HIDPARSER]

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- Use the full bit range of input items instead of discarding high bits
CORE-7772 #resolve

svn path=/trunk/; revision=61680
This commit is contained in:
Thomas Faber 2014-01-18 19:18:33 +00:00
parent a58d50de18
commit 6c05d66386
1 changed files with 6 additions and 8 deletions
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8
reactos/lib/drivers/hidparser/api.c
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@ -632,10 +632,10 @@ HidParser_GetUsageValueWithReport(
ASSERT(ReportItem->ByteOffset < ReportDescriptorLength); ASSERT(ReportItem->ByteOffset < ReportDescriptorLength);
// //
// FIXME: support items with variable bitlength // one extra shift for skipping the prepended report id
// //
ASSERT(ReportItem->BitCount == 16); Data = 0;
Data = (ReportDescriptor[ReportItem->ByteOffset +1] & 0xFF) | (ReportDescriptor[ReportItem->ByteOffset +2] & 0xFF) << 8; Parser->Copy(&Data, &ReportDescriptor[ReportItem->ByteOffset + 1], min(sizeof(ULONG), ReportDescriptorLength - (ReportItem->ByteOffset + 1)));
// //
// shift data // shift data
@ -733,7 +733,6 @@ HidParser_GetScaledUsageValueWithReport(
// //
Data = 0; Data = 0;
Parser->Copy(&Data, &ReportDescriptor[ReportItem->ByteOffset + 1], min(sizeof(ULONG), ReportDescriptorLength - (ReportItem->ByteOffset + 1))); Parser->Copy(&Data, &ReportDescriptor[ReportItem->ByteOffset + 1], min(sizeof(ULONG), ReportDescriptorLength - (ReportItem->ByteOffset + 1)));
Data = ReportDescriptor[ReportItem->ByteOffset + 1];
// //
// shift data // shift data
@ -812,7 +811,6 @@ HidParser_GetScanCodeFromCustUsage(
// //
return CustomerScanCodes[i].ScanCode; return CustomerScanCodes[i].ScanCode;
} }
} }
// //