BOOLEAN
FillDeviceInfo(
IN PHID_DEVICE HidDevice
)
{
USHORT numValues;
USHORT numCaps;
PHIDP_BUTTON_CAPS buttonCaps;
PHIDP_VALUE_CAPS valueCaps;
PHID_DATA data;
ULONG i;
USAGE usage;
//
// setup Input Data buffers.
//
//
// Allocate memory to hold on input report
//
HidDevice->InputReportBuffer = (PCHAR)
calloc (HidDevice->Caps.InputReportByteLength, sizeof (CHAR));
//
// Allocate memory to hold the button and value capabilities.
// NumberXXCaps is in terms of array elements.
//
HidDevice->InputButtonCaps = buttonCaps = (PHIDP_BUTTON_CAPS)
calloc (HidDevice->Caps.NumberInputButtonCaps, sizeof (HIDP_BUTTON_CAPS));
if (NULL == buttonCaps)
{
return (FALSE);
}
HidDevice->InputValueCaps = valueCaps = (PHIDP_VALUE_CAPS)
calloc (HidDevice->Caps.NumberInputValueCaps, sizeof (HIDP_VALUE_CAPS));
if (NULL == valueCaps)
{
return(FALSE);
}
//
// Have the HidP_X functions fill in the capability structure arrays.
//
numCaps = HidDevice->Caps.NumberInputButtonCaps;
HidP_GetButtonCaps (HidP_Input,
buttonCaps,
&numCaps,
HidDevice->Ppd);
numCaps = HidDevice->Caps.NumberInputValueCaps;
HidP_GetValueCaps (HidP_Input,
valueCaps,
&numCaps,
HidDevice->Ppd);
//
// Depending on the device, some value caps structures may represent more
// than one value. (A range). In the interest of being verbose, over
// efficient, we will expand these so that we have one and only one
// struct _HID_DATA for each value.
//
// To do this we need to count up the total number of values are listed
// in the value caps structure. For each element in the array we test
// for range if it is a range then UsageMax and UsageMin describe the
// usages for this range INCLUSIVE.
//
numValues = 0;
for (i = 0; i < HidDevice->Caps.NumberInputValueCaps; i++, valueCaps++)
{
if (valueCaps->IsRange)
{
numValues += valueCaps->Range.UsageMax - valueCaps->Range.UsageMin + 1;
}
else
{
numValues++;
}
}
valueCaps = HidDevice->InputValueCaps;
//
// Allocate a buffer to hold the struct _HID_DATA structures.
// One element for each set of buttons, and one element for each value
// found.
//
HidDevice->InputDataLength = HidDevice->Caps.NumberInputButtonCaps
+ numValues;
HidDevice->InputData = data = (PHID_DATA)
calloc (HidDevice->InputDataLength, sizeof (HID_DATA));
if (NULL == data)
{
return (FALSE);
}
//
// Fill in the button data
//
for (i = 0;
i < HidDevice->Caps.NumberInputButtonCaps;
i++, data++, buttonCaps++)
{
data->IsButtonData = TRUE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = buttonCaps->UsagePage;
if (buttonCaps->IsRange)
{
data->ButtonData.UsageMin = buttonCaps -> Range.UsageMin;
data->ButtonData.UsageMax = buttonCaps -> Range.UsageMax;
}
else
{
data -> ButtonData.UsageMin = data -> ButtonData.UsageMax = buttonCaps -> NotRange.Usage;
}
data->ButtonData.MaxUsageLength = HidP_MaxUsageListLength (
HidP_Input,
buttonCaps->UsagePage,
HidDevice->Ppd);
data->ButtonData.Usages = (PUSAGE)
calloc (data->ButtonData.MaxUsageLength, sizeof (USAGE));
data->ReportID = buttonCaps -> ReportID;
}
//
// Fill in the value data
//
for (i = 0; i < numValues; i++, valueCaps++)
{
if (valueCaps->IsRange)
{
for (usage = valueCaps->Range.UsageMin;
usage <= valueCaps->Range.UsageMax;
usage++)
{
data->IsButtonData = FALSE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = valueCaps->UsagePage;
data->ValueData.Usage = usage;
data->ReportID = valueCaps -> ReportID;
data++;
}
}
else
{
data->IsButtonData = FALSE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = valueCaps->UsagePage;
data->ValueData.Usage = valueCaps->NotRange.Usage;
data->ReportID = valueCaps -> ReportID;
data++;
}
}
//
// setup Output Data buffers.
//
HidDevice->OutputReportBuffer = (PCHAR)
calloc (HidDevice->Caps.OutputReportByteLength, sizeof (CHAR));
HidDevice->OutputButtonCaps = buttonCaps = (PHIDP_BUTTON_CAPS)
calloc (HidDevice->Caps.NumberOutputButtonCaps, sizeof (HIDP_BUTTON_CAPS));
if (NULL == buttonCaps)
{
return (FALSE);
}
HidDevice->OutputValueCaps = valueCaps = (PHIDP_VALUE_CAPS)
calloc (HidDevice->Caps.NumberOutputValueCaps, sizeof (HIDP_VALUE_CAPS));
if (NULL == valueCaps)
{
return (FALSE);
}
numCaps = HidDevice->Caps.NumberOutputButtonCaps;
HidP_GetButtonCaps (HidP_Output,
buttonCaps,
&numCaps,
HidDevice->Ppd);
numCaps = HidDevice->Caps.NumberOutputValueCaps;
HidP_GetValueCaps (HidP_Output,
valueCaps,
&numCaps,
HidDevice->Ppd);
numValues = 0;
for (i = 0; i < HidDevice->Caps.NumberOutputValueCaps; i++, valueCaps++)
{
if (valueCaps->IsRange)
{
numValues += valueCaps->Range.UsageMax
- valueCaps->Range.UsageMin + 1;
}
else
{
numValues++;
}
}
valueCaps = HidDevice->OutputValueCaps;
HidDevice->OutputDataLength = HidDevice->Caps.NumberOutputButtonCaps
+ numValues;
HidDevice->OutputData = data = (PHID_DATA)
calloc (HidDevice->OutputDataLength, sizeof (HID_DATA));
if (NULL == data)
{
return (FALSE);
}
for (i = 0;
i < HidDevice->Caps.NumberOutputButtonCaps;
i++, data++, buttonCaps++)
{
data->IsButtonData = TRUE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = buttonCaps->UsagePage;
if (buttonCaps->IsRange)
{
data->ButtonData.UsageMin = buttonCaps -> Range.UsageMin;
data->ButtonData.UsageMax = buttonCaps -> Range.UsageMax;
}
else
{
data -> ButtonData.UsageMin = data -> ButtonData.UsageMax = buttonCaps -> NotRange.Usage;
}
data->ButtonData.MaxUsageLength = HidP_MaxUsageListLength (
HidP_Output,
buttonCaps->UsagePage,
HidDevice->Ppd);
data->ButtonData.Usages = (PUSAGE)
calloc (data->ButtonData.MaxUsageLength, sizeof (USAGE));
data->ReportID = buttonCaps -> ReportID;
}
for (i = 0; i < numValues; i++, valueCaps++)
{
if (valueCaps->IsRange)
{
for (usage = valueCaps->Range.UsageMin;
usage <= valueCaps->Range.UsageMax;
usage++)
{
data->IsButtonData = FALSE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = valueCaps->UsagePage;
data->ValueData.Usage = usage;
data->ReportID = valueCaps -> ReportID;
data++;
}
}
else
{
data->IsButtonData = FALSE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = valueCaps->UsagePage;
data->ValueData.Usage = valueCaps->NotRange.Usage;
data->ReportID = valueCaps -> ReportID;
data++;
}
}
//
// setup Feature Data buffers.
//
HidDevice->FeatureReportBuffer = (PCHAR)
calloc (HidDevice->Caps.FeatureReportByteLength, sizeof (CHAR));
HidDevice->FeatureButtonCaps = buttonCaps = (PHIDP_BUTTON_CAPS)
calloc (HidDevice->Caps.NumberFeatureButtonCaps, sizeof (HIDP_BUTTON_CAPS));
if (NULL == buttonCaps)
{
return (FALSE);
}
HidDevice->FeatureValueCaps = valueCaps = (PHIDP_VALUE_CAPS)
calloc (HidDevice->Caps.NumberFeatureValueCaps, sizeof (HIDP_VALUE_CAPS));
if (NULL == valueCaps)
{
return (FALSE);
}
numCaps = HidDevice->Caps.NumberFeatureButtonCaps;
HidP_GetButtonCaps (HidP_Feature,
buttonCaps,
&numCaps,
HidDevice->Ppd);
numCaps = HidDevice->Caps.NumberFeatureValueCaps;
HidP_GetValueCaps (HidP_Feature,
valueCaps,
&numCaps,
HidDevice->Ppd);
numValues = 0;
for (i = 0; i < HidDevice->Caps.NumberFeatureValueCaps; i++, valueCaps++)
{
if (valueCaps->IsRange)
{
numValues += valueCaps->Range.UsageMax
- valueCaps->Range.UsageMin + 1;
}
else
{
numValues++;
}
}
valueCaps = HidDevice->FeatureValueCaps;
HidDevice->FeatureDataLength = HidDevice->Caps.NumberFeatureButtonCaps
+ numValues;
HidDevice->FeatureData = data = (PHID_DATA)
calloc (HidDevice->FeatureDataLength, sizeof (HID_DATA));
if (NULL == data)
{
return (FALSE);
}
for (i = 0;
i < HidDevice->Caps.NumberFeatureButtonCaps;
i++, data++, buttonCaps++)
{
data->IsButtonData = TRUE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = buttonCaps->UsagePage;
if (buttonCaps->IsRange)
{
data->ButtonData.UsageMin = buttonCaps -> Range.UsageMin;
data->ButtonData.UsageMax = buttonCaps -> Range.UsageMax;
}
else
{
data -> ButtonData.UsageMin = data -> ButtonData.UsageMax = buttonCaps -> NotRange.Usage;
}
data->ButtonData.MaxUsageLength = HidP_MaxUsageListLength (
HidP_Feature,
buttonCaps->UsagePage,
HidDevice->Ppd);
data->ButtonData.Usages = (PUSAGE)
calloc (data->ButtonData.MaxUsageLength, sizeof (USAGE));
data->ReportID = buttonCaps -> ReportID;
}
for (i = 0; i < numValues; i++, valueCaps++)
{
if (valueCaps->IsRange)
{
for (usage = valueCaps->Range.UsageMin;
usage <= valueCaps->Range.UsageMax;
usage++)
{
data->IsButtonData = FALSE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = valueCaps->UsagePage;
data->ValueData.Usage = usage;
data->ReportID = valueCaps -> ReportID;
data++;
}
}
else
{
data->IsButtonData = FALSE;
data->Status = HIDP_STATUS_SUCCESS;
data->UsagePage = valueCaps->UsagePage;
data->ValueData.Usage = valueCaps->NotRange.Usage;
data->ReportID = valueCaps -> ReportID;
data++;
}
}
return (TRUE);
}
ULONG Hid::MaxUsageListLength(REPORT_TYPE ReportType, USAGE UsagePage, void *PreparsedData)
{
return HidP_MaxUsageListLength(ReportType, UsagePage, PreparsedData);
}
