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hid: Scale from logical to physical coördinates in HidP_GetScaledUsageValue().

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Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Aric Stewart <aric@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura 2019-02-12 00:06:04 -06:00 committed by Alexandre Julliard
parent fbc1a89a40
commit 6ca21b56b4
1 changed files with 13 additions and 1 deletions
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14
dlls/hid/hidp.c
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@ -272,6 +272,18 @@ static LONG sign_extend(ULONG value, const WINE_HID_ELEMENT *element)
return value;
}
static LONG logical_to_physical(LONG value, const WINE_HID_ELEMENT *element)
{
if (element->caps.value.PhysicalMin || element->caps.value.PhysicalMax)
{
value = (((ULONGLONG)(value - element->caps.value.LogicalMin)
* (element->caps.value.PhysicalMax - element->caps.value.PhysicalMin))
/ (element->caps.value.LogicalMax - element->caps.value.LogicalMin))
+ element->caps.value.PhysicalMin;
}
return value;
}
NTSTATUS WINAPI HidP_GetScaledUsageValue(HIDP_REPORT_TYPE ReportType, USAGE UsagePage,
USHORT LinkCollection, USAGE Usage, PLONG UsageValue,
PHIDP_PREPARSED_DATA PreparsedData, PCHAR Report, ULONG ReportLength)
@ -290,7 +302,7 @@ NTSTATUS WINAPI HidP_GetScaledUsageValue(HIDP_REPORT_TYPE ReportType, USAGE Usag
element->valueStartBit, element->bitCount, &rawValue);
if (rc != HIDP_STATUS_SUCCESS)
return rc;
*UsageValue = sign_extend(rawValue, element);
*UsageValue = logical_to_physical(sign_extend(rawValue, element), element);
}
return rc;