int open_path(const char * path, int print) {
int device = async_open_path(path, print);
if(device >= 0) {
HIDD_ATTRIBUTES attributes = { .Size = sizeof(HIDD_ATTRIBUTES) };
if(HidD_GetAttributes(devices[device].handle, &attributes) == TRUE) {
PHIDP_PREPARSED_DATA preparsedData;
HIDP_CAPS hidCapabilities;
if(HidD_GetPreparsedData(devices[device].handle, &preparsedData) == TRUE) {
if(HidP_GetCaps(preparsedData, &hidCapabilities) == HIDP_STATUS_SUCCESS ) {
devices[device].write.size = hidCapabilities.OutputReportByteLength;
async_set_read_size(device, hidCapabilities.InputReportByteLength);
devices[device].hidInfo.vendor_id = attributes.VendorID;
devices[device].hidInfo.product_id = attributes.ProductID;
devices[device].hidInfo.bcdDevice = attributes.VersionNumber;
}
else {
if (print) {
ASYNC_PRINT_ERROR("HidP_GetCaps")
}
async_close(device);
device = -1;
}
HidD_FreePreparsedData(preparsedData);
}
else {
if (print) {
ASYNC_PRINT_ERROR("HidD_GetPreparsedData")
}
async_close(device);
device = -1;
}
}
void GetDeviceCapabilities(HANDLE DeviceHandle)
{
//Get the Capabilities structure for the
PHIDP_PREPARSED_DATA PreparsedData;
/*
API function: HidD_GetPreparsedData
Returns: a pointer to a buffer containing the information about the device's capabilities.
Requires: A handle returned by CreateFile.
There's no need to access the buffer directly,
but HidP_GetCaps and other API functions require a pointer to the buffer.
*/
HidD_GetPreparsedData
(DeviceHandle,
&PreparsedData);
/*
API function: HidP_GetCaps
Learn the device's capabilities.
For standard devices such as joysticks, you can find out the specific
capabilities of the
For a custom device, the software will probably know what the device is capable of,
and the call only verifies the information.
Requires: the pointer to the buffer returned by HidD_GetPreparsedData.
Returns: a Capabilities structure containing the information.
*/
HidP_GetCaps
(PreparsedData,
&Capabilities);
HidD_FreePreparsedData(PreparsedData);
}
int hs_hid_parse_descriptor(hs_handle *h, hs_hid_descriptor *rdesc)
{
assert(h);
assert(h->dev->type == HS_DEVICE_TYPE_HID);
assert(rdesc);
// semi-hidden Hungarian pointers? Really , Microsoft?
PHIDP_PREPARSED_DATA pp;
HIDP_CAPS caps;
LONG ret;
ret = HidD_GetPreparsedData(h->handle, &pp);
if (!ret)
return hs_error(HS_ERROR_SYSTEM, "HidD_GetPreparsedData() failed");
// NTSTATUS and BOOL are both defined as LONG
ret = HidP_GetCaps(pp, &caps);
HidD_FreePreparsedData(pp);
if (ret != HIDP_STATUS_SUCCESS)
return hs_error(HS_ERROR_SYSTEM, "Invalid HID descriptor");
rdesc->usage_page = caps.UsagePage;
rdesc->usage = caps.Usage;
return 0;
}
USBHIDDLL_API bool bWrite_ToHIDDevice(PHANDLE pWriteHandle, LPBYTE lpWriteBuff){
DWORD dwNumberOfBytesWrite;
HIDP_CAPS Capabilities;
PHIDP_PREPARSED_DATA HidParsedData;
BOOL bResult = false;
if(*pWriteHandle != NULL){
HidD_GetPreparsedData(*pWriteHandle, &HidParsedData);
/* extract the capabilities info */
HidP_GetCaps( HidParsedData ,&Capabilities);
/* Free the memory allocated when getting the preparsed data */
HidD_FreePreparsedData(HidParsedData);
bResult = WriteFile(*pWriteHandle,
lpWriteBuff,
Capabilities.OutputReportByteLength,
&dwNumberOfBytesWrite,
NULL);
}
return bResult;
}
HID_API_EXPORT hid_device* HID_API_CALL hid_open_path(const char *path)
{
hid_device *dev;
HIDP_CAPS caps;
PHIDP_PREPARSED_DATA pp_data = NULL;
BOOLEAN res;
NTSTATUS nt_res;
if (hid_init() < 0) {
return NULL;
}
dev = new_hid_device();
/* Open a handle to the device */
dev->device_handle = open_device(path, FALSE);
/* Check validity of write_handle. */
if (dev->device_handle == INVALID_HANDLE_VALUE) {
/* Unable to open the device. */
register_error(dev, "CreateFile");
goto err;
}
/* Set the Input Report buffer size to 64 reports. */
res = HidD_SetNumInputBuffers(dev->device_handle, 64);
if (!res) {
register_error(dev, "HidD_SetNumInputBuffers");
goto err;
}
/* Get the Input Report length for the device. */
res = HidD_GetPreparsedData(dev->device_handle, &pp_data);
if (!res) {
register_error(dev, "HidD_GetPreparsedData");
goto err;
}
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res != HIDP_STATUS_SUCCESS) {
register_error(dev, "HidP_GetCaps");
goto err_pp_data;
}
dev->output_report_length = caps.OutputReportByteLength;
dev->input_report_length = caps.InputReportByteLength;
HidD_FreePreparsedData(pp_data);
dev->read_buf = (char*) malloc(dev->input_report_length);
return dev;
err_pp_data:
HidD_FreePreparsedData(pp_data);
err:
free_hid_device(dev);
return NULL;
}
BOOLEAN SwitchLogitech( __in LPTSTR lpDongleName, __in HANDLE hHidDevice, __in BOOL toHID )
{
PHIDP_PREPARSED_DATA PreparsedData;
if ( !HidD_GetPreparsedData( hHidDevice, &PreparsedData ) )
{
LbtReportFunctionError( TEXT("HidD_GetPreparsedData") );
return FALSE;
}
HIDP_CAPS HidCaps;
if ( !HidP_GetCaps( PreparsedData, &HidCaps ) )
{
LbtReportFunctionError( TEXT("HidP_GetCaps") );
HidD_FreePreparsedData(PreparsedData);
return FALSE;
}
if ( HidCaps.UsagePage != 0xFF00 || HidCaps.Usage != 0x0001 )
{
HidD_FreePreparsedData(PreparsedData);
return FALSE;
}
if ( HidCaps.OutputReportByteLength != sizeof(ToHCIReports[0]) )
{
HidD_FreePreparsedData(PreparsedData);
return FALSE;
}
DWORD noReports = toHID ? sizeof(ToHCIReports) / sizeof(ToHCIReports[0]) :
sizeof(ToHIDReports) / sizeof(ToHIDReports[0]);
for (DWORD i = 0; i < noReports; i++ )
{
CHAR ReportBuffer[sizeof(ToHCIReports[0])];
RtlCopyMemory( ReportBuffer, toHID ? ToHCIReports[i] : ToHIDReports[i], sizeof( ToHCIReports[0] ) );
if (!HidD_SetOutputReport( hHidDevice, ReportBuffer, HidCaps.OutputReportByteLength ) )
{
LbtReportFunctionError( TEXT("HidD_SetOutputReport") );
HidD_FreePreparsedData(PreparsedData);
return FALSE;
}
}
HidD_FreePreparsedData(PreparsedData);
LbtReportDongleSwitch( lpDongleName, toHID );
return TRUE;
}
BOOLEAN
CheckIfOurDevice(
HANDLE file,
USAGE myUsagePage,
USAGE myUsage)
{
PHIDP_PREPARSED_DATA Ppd = NULL; // The opaque parser info describing this device
HIDD_ATTRIBUTES Attributes; // The Attributes of this hid device.
HIDP_CAPS Caps; // The Capabilities of this hid device.
BOOLEAN result = FALSE;
if (!HidD_GetPreparsedData (file, &Ppd))
{
printf("Error: HidD_GetPreparsedData failed \n");
goto cleanup;
}
if (!HidD_GetAttributes(file, &Attributes))
{
printf("Error: HidD_GetAttributes failed \n");
goto cleanup;
}
if (Attributes.VendorID == vmultib_VID && Attributes.ProductID == vmultib_PID)
{
if (!HidP_GetCaps (Ppd, &Caps))
{
printf("Error: HidP_GetCaps failed \n");
goto cleanup;
}
if ((Caps.UsagePage == myUsagePage) && (Caps.Usage == myUsage))
{
printf("Success: Found my device.. \n");
result = TRUE;
}
}
cleanup:
if (Ppd != NULL)
{
HidD_FreePreparsedData (Ppd);
}
return result;
}
void CUSBDevice::setDetail(TCHAR *path){
HANDLE temp;
PHIDP_PREPARSED_DATA PreparsedData;
delete[] m_pPath;
m_pPath = new TCHAR[strlen(path) * sizeof(TCHAR) + 1];
strcpy(m_pPath, path);
TRACE("received at addr %x %s\r\n", m_pPath, m_pPath);
temp = CreateFile(m_pPath,
0,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);
HidD_GetPreparsedData(temp, &PreparsedData);
HidP_GetCaps(PreparsedData, &m_Capabilities);
}
bool HIDDeviceManager::initUsage(HANDLE hidDev, HIDDeviceDesc* desc) const
{
bool result = false;
HIDP_CAPS caps;
HIDP_PREPARSED_DATA* preparsedData = 0;
if (!HidD_GetPreparsedData(hidDev, &preparsedData))
return false;
if (HidP_GetCaps(preparsedData, &caps) == HIDP_STATUS_SUCCESS)
{
desc->Usage = caps.Usage;
desc->UsagePage = caps.UsagePage;
result = true;
}
HidD_FreePreparsedData(preparsedData);
return result;
}
bool Device::open(boost::asio::io_service &io_service, std::shared_ptr<ICallback> callback)
{
auto handle = CreateFile(m_path.c_str(), GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ,
NULL, OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, NULL);
if(handle == INVALID_HANDLE_VALUE) {
return false;
}
m_handle=std::shared_ptr<void>(handle, &::CloseHandle);
// get hid caps
{
HIDP_PREPARSED_DATA* preparsedData=0;
if (!HidD_GetPreparsedData(handle, &preparsedData)){
return false;
}
std::shared_ptr<HIDP_PREPARSED_DATA> parsed(
preparsedData, HidD_FreePreparsedData);
HIDP_CAPS caps;
if (HidP_GetCaps(preparsedData, &caps) != HIDP_STATUS_SUCCESS)
{
return false;
}
std::cout << "Usage: " << caps.Usage << std::endl;
std::cout << "UsagePage: " << caps.UsagePage << std::endl;
std::cout << "InputReportByteLength: "
<< caps.InputReportByteLength << std::endl;
std::cout << "OutputReportByteLength: "
<< caps.OutputReportByteLength << std::endl;
std::cout << "FeatureReportByteLength: "
<< caps.FeatureReportByteLength << std::endl;
}
// setup stream
m_stream=std::make_shared<boost::asio::windows::stream_handle>(io_service, handle);
m_callback=callback;
beginRead();
m_callback->onConnect(this);
return true;
}
BOOLEAN SwitchCSR(__in LPTSTR lpDongleName, __in HANDLE hHidDevice, __in BOOL toHID)
{
PHIDP_PREPARSED_DATA PreparsedData;
if (!HidD_GetPreparsedData(hHidDevice, &PreparsedData))
{
LbtReportFunctionError(TEXT("HidD_GetPreparsedData"));
return FALSE;
}
HIDP_CAPS HidCaps;
if (!HidP_GetCaps(PreparsedData, &HidCaps))
{
LbtReportFunctionError(TEXT("HidP_GetCaps"));
HidD_FreePreparsedData(PreparsedData);
return FALSE;
}
if (HidCaps.UsagePage != 0xFF00 || HidCaps.Usage != 0x0001)
{
// HidD_FreePreparsedData(PreparsedData);
// return FALSE;
}
if (HidCaps.FeatureReportByteLength != sizeof(ToHCICSRReports))
{
// HidD_FreePreparsedData(PreparsedData);
// return FALSE;
}
CHAR ReportBuffer[sizeof(ToHCICSRReports)];
RtlCopyMemory(ReportBuffer, ToHCICSRReports, sizeof(ToHCICSRReports));
if (!HidD_SetFeature(hHidDevice, ReportBuffer, HidCaps.FeatureReportByteLength))
{
LbtReportFunctionError(TEXT("HidD_SetOutputReport"));
HidD_FreePreparsedData(PreparsedData);
return FALSE;
}
HidD_FreePreparsedData(PreparsedData);
LbtReportDongleSwitch(lpDongleName, toHID);
return TRUE;
}
/**
* constructor
*/
boca_hid_printer_t *boca_hid_new(const char *device_path) {
boca_hid_printer_t *self = (boca_hid_printer_t *) calloc(1, sizeof(boca_hid_printer_t));
if (!self) return NULL;
self->device_path = strdup(device_path);
#ifdef __WIN32__
HANDLE handle;
handle = CreateFile(device_path,
0,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (handle != INVALID_HANDLE_VALUE) {
PHIDP_PREPARSED_DATA preparsed_data;
if (HidD_GetPreparsedData(handle, &preparsed_data)) {
HIDP_CAPS capabilities;
NTSTATUS ret = HidP_GetCaps(preparsed_data, &capabilities);
if (ret == HIDP_STATUS_SUCCESS) {
self->input_length = capabilities.InputReportByteLength;
self->output_length = capabilities.OutputReportByteLength;
self->feature_length = capabilities.FeatureReportByteLength;
zsys_info("hid printer: input length %d output length %d feature length %d", self->input_length,
self->output_length, self->feature_length);
} else {
zsys_warning("hid printer: can not get hid printer capabilities.");
}
} else {
zsys_warning("hid printer: can not get hid prepared data");
}
CloseHandle(handle);
} else {
zsys_warning("hid printer: can not open hid device code %d", GetLastError());
}
#endif
self->device = hid_open_path(self->device_path);
if (self->device == NULL) {
zsys_error("hid printer: could not create device from path %s", device_path);
boca_hid_destroy(&self);
return NULL;
}
return self;
}
int RawInputPad::Open()
{
PHIDP_PREPARSED_DATA pPreparsedData = NULL;
//TODO Better place?
LoadMappings(mapVector);
memset(&this->ovl, 0, sizeof(OVERLAPPED));
memset(&this->ovlW, 0, sizeof(OVERLAPPED));
//this->padState.initStage = 0;
this->doPassthrough = !!conf.DFPPass;//TODO per player
this->usbHandle = INVALID_HANDLE_VALUE;
std::wstring path;
{
CONFIGVARIANT var(N_JOYSTICK, CONFIG_TYPE_WCHAR);
if (LoadSetting(mPort, APINAME, var))
path = var.wstrValue;
else
return 1;
}
this->usbHandle = CreateFileW(path.c_str(), GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
if(this->usbHandle != INVALID_HANDLE_VALUE)
{
this->ovl.hEvent = CreateEvent(0, 0, 0, 0);
this->ovlW.hEvent = CreateEvent(0, 0, 0, 0);
HidD_GetAttributes(this->usbHandle, &(this->attr));
HidD_GetPreparsedData(this->usbHandle, &pPreparsedData);
HidP_GetCaps(pPreparsedData, &(this->caps));
HidD_FreePreparsedData(pPreparsedData);
return 0;
}
else
fwprintf(stderr, L"Could not open device '%s'.\nPassthrough and FFB will not work.\n", path.c_str());
return 1;
}
// 获取设备一些能力信息
USBHIDDLL_API void __stdcall USBHIDGetDeviceCapabilities(USBHANDLE handle, PHIDD_ATTRIBUTES attributes, PHIDP_CAPS caps)
{
if (handle != INVALID_HANDLE_VALUE)
{
HidD_GetAttributes(handle, attributes);
//Get the Capabilities structure for the device.
PHIDP_PREPARSED_DATA PreparsedData;
/*
API function: HidD_GetPreparsedData
Returns: a pointer to a buffer containing the information about the device's capabilities.
Requires: A handle returned by CreateFile.
There's no need to access the buffer directly,
but HidP_GetCaps and other API functions require a pointer to the buffer.
*/
HidD_GetPreparsedData (handle, &PreparsedData);
//DisplayLastError("HidD_GetPreparsedData: ");
/*
API function: HidP_GetCaps
Learn the device's capabilities.
For standard devices such as joysticks, you can find out the specific
capabilities of the device.
For a custom device, the software will probably know what the device is capable of,
and the call only verifies the information.
Requires: the pointer to the buffer returned by HidD_GetPreparsedData.
Returns: a Capabilities structure containing the information.
*/
HidP_GetCaps (PreparsedData, caps);
//No need for PreparsedData any more, so free the memory it's using.
HidD_FreePreparsedData(PreparsedData);
//DisplayLastError("HidD_FreePreparsedData: ") ;
}
}
void parse_info_from_path(hid_event* event, char* device_path) {
auto write_handle = open_device(device_path, TRUE);
/* Check validity of write_handle. */
if (write_handle == INVALID_HANDLE_VALUE) {
/* Unable to open the device. */
//register_error(dev, "CreateFile");
//goto cont_close;
return;
}
//TODO: clean this shit up
HIDD_ATTRIBUTES attrib;
attrib.Size = sizeof(HIDD_ATTRIBUTES);
HidD_GetAttributes(write_handle, &attrib);
event->device_info->product_id = attrib.ProductID;
event->device_info->vendor_id = attrib.VendorID;
event->device_info->release_number = attrib.VersionNumber;
PHIDP_PREPARSED_DATA pp_data = NULL;
auto res = HidD_GetPreparsedData(write_handle, &pp_data);
if (res) {
HIDP_CAPS caps;
auto nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res == HIDP_STATUS_SUCCESS) {
event->device_info->usage_page = caps.UsagePage;
event->device_info->usage = caps.Usage;
}
HidD_FreePreparsedData(pp_data);
}
CloseHandle(write_handle);
}
struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
BOOL res;
struct hid_device_info *root = NULL; /* return object */
struct hid_device_info *cur_dev = NULL;
/* Windows objects for interacting with the driver. */
GUID InterfaceClassGuid;
HidD_GetHidGuid(&InterfaceClassGuid);
SP_DEVINFO_DATA devinfo_data;
SP_DEVICE_INTERFACE_DATA device_interface_data;
SP_DEVICE_INTERFACE_DETAIL_DATA_A *device_interface_detail_data = NULL;
HDEVINFO device_info_set = INVALID_HANDLE_VALUE;
int device_index = 0;
int i;
if (hid_init() < 0)
return NULL;
/* Initialize the Windows objects. */
memset(&devinfo_data, 0x0, sizeof(devinfo_data));
devinfo_data.cbSize = sizeof(SP_DEVINFO_DATA);
device_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
/* Get information for all the devices belonging to the HID class. */
device_info_set = SetupDiGetClassDevsA(&InterfaceClassGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
/* Iterate over each device in the HID class, looking for the right one. */
for (;;) {
HANDLE write_handle = INVALID_HANDLE_VALUE;
DWORD required_size = 0;
HIDD_ATTRIBUTES attrib;
res = SetupDiEnumDeviceInterfaces(device_info_set,
NULL,
&InterfaceClassGuid,
device_index,
&device_interface_data);
if (!res) {
/* A return of FALSE from this function means that
there are no more devices. */
break;
}
/* Call with 0-sized detail size, and let the function
tell us how long the detail struct needs to be. The
size is put in &required_size. */
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
NULL,
0,
&required_size,
NULL);
/* Allocate a long enough structure for device_interface_detail_data. */
device_interface_detail_data = (SP_DEVICE_INTERFACE_DETAIL_DATA_A*) malloc(required_size);
device_interface_detail_data->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A);
/* Get the detailed data for this device. The detail data gives us
the device path for this device, which is then passed into
CreateFile() to get a handle to the device. */
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
device_interface_detail_data,
required_size,
NULL,
NULL);
if (!res) {
/* register_error(dev, "Unable to call SetupDiGetDeviceInterfaceDetail");
Continue to the next device. */
goto cont;
}
/* Make sure this device is of Setup Class "HIDClass" and has a
driver bound to it. */
for (i = 0; ; i++) {
char driver_name[256];
/* Populate devinfo_data. This function will return failure
when there are no more interfaces left. */
res = SetupDiEnumDeviceInfo(device_info_set, i, &devinfo_data);
if (!res)
goto cont;
res = SetupDiGetDeviceRegistryPropertyA(device_info_set, &devinfo_data,
SPDRP_CLASS, NULL, (PBYTE)driver_name, sizeof(driver_name), NULL);
if (!res)
goto cont;
if (strcmp(driver_name, "HIDClass") == 0) {
/* See if there's a driver bound. */
res = SetupDiGetDeviceRegistryPropertyA(device_info_set, &devinfo_data,
SPDRP_DRIVER, NULL, (PBYTE)driver_name, sizeof(driver_name), NULL);
if (res)
break;
}
}
//wprintf(L"HandleName: %s\n", device_interface_detail_data->DevicePath);
/* Open a handle to the device */
write_handle = open_device(device_interface_detail_data->DevicePath, TRUE);
/* Check validity of write_handle. */
if (write_handle == INVALID_HANDLE_VALUE) {
/* Unable to open the device. */
//register_error(dev, "CreateFile");
goto cont_close;
}
/* Get the Vendor ID and Product ID for this device. */
attrib.Size = sizeof(HIDD_ATTRIBUTES);
HidD_GetAttributes(write_handle, &attrib);
//wprintf(L"Product/Vendor: %x %x\n", attrib.ProductID, attrib.VendorID);
/* Check the VID/PID to see if we should add this
device to the enumeration list. */
if ((vendor_id == 0x0 || attrib.VendorID == vendor_id) &&
(product_id == 0x0 || attrib.ProductID == product_id)) {
#define WSTR_LEN 512
const char *str;
struct hid_device_info *tmp;
PHIDP_PREPARSED_DATA pp_data = NULL;
HIDP_CAPS caps;
BOOLEAN res;
NTSTATUS nt_res;
wchar_t wstr[WSTR_LEN]; /* TODO: Determine Size */
size_t len;
/* VID/PID match. Create the record. */
tmp = (struct hid_device_info*) calloc(1, sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
/* Get the Usage Page and Usage for this device. */
res = HidD_GetPreparsedData(write_handle, &pp_data);
if (res) {
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res == HIDP_STATUS_SUCCESS) {
cur_dev->usage_page = caps.UsagePage;
cur_dev->usage = caps.Usage;
}
HidD_FreePreparsedData(pp_data);
}
/* Fill out the record */
cur_dev->next = NULL;
str = device_interface_detail_data->DevicePath;
if (str) {
len = strlen(str);
cur_dev->path = (char*) calloc(len+1, sizeof(char));
strncpy(cur_dev->path, str, len+1);
cur_dev->path[len] = '\0';
}
else
cur_dev->path = NULL;
/* Serial Number */
res = HidD_GetSerialNumberString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->serial_number = _wcsdup(wstr);
}
/* Manufacturer String */
res = HidD_GetManufacturerString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->manufacturer_string = _wcsdup(wstr);
}
/* Product String */
res = HidD_GetProductString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->product_string = _wcsdup(wstr);
}
/* VID/PID */
cur_dev->vendor_id = attrib.VendorID;
cur_dev->product_id = attrib.ProductID;
/* Release Number */
cur_dev->release_number = attrib.VersionNumber;
/* Interface Number. It can sometimes be parsed out of the path
on Windows if a device has multiple interfaces. See
http://msdn.microsoft.com/en-us/windows/hardware/gg487473 or
search for "Hardware IDs for HID Devices" at MSDN. If it's not
in the path, it's set to -1. */
cur_dev->interface_number = -1;
if (cur_dev->path) {
char *interface_component = strstr(cur_dev->path, "&mi_");
if (interface_component) {
char *hex_str = interface_component + 4;
char *endptr = NULL;
cur_dev->interface_number = strtol(hex_str, &endptr, 16);
if (endptr == hex_str) {
/* The parsing failed. Set interface_number to -1. */
cur_dev->interface_number = -1;
}
}
}
}
cont_close:
CloseHandle(write_handle);
cont:
/* We no longer need the detail data. It can be freed */
free(device_interface_detail_data);
device_index++;
}
/* Close the device information handle. */
SetupDiDestroyDeviceInfoList(device_info_set);
return root;
}
// rawhid_open - open 1 or more devices
//
// Inputs:
// max = maximum number of devices to open
// vid = Vendor ID, or -1 if any
// pid = Product ID, or -1 if any
// usage_page = top level usage page, or -1 if any
// usage = top level usage number, or -1 if any
// Output:
// actual number of devices opened
//
int rawhid_open(int max, int vid, int pid, int usage_page, int usage)
{
GUID guid;
HDEVINFO info;
DWORD index=0, reqd_size;
SP_DEVICE_INTERFACE_DATA iface;
SP_DEVICE_INTERFACE_DETAIL_DATA *details;
HIDD_ATTRIBUTES attrib;
PHIDP_PREPARSED_DATA hid_data;
HIDP_CAPS capabilities;
HANDLE h;
BOOL ret;
hid_t *hid;
int count=0;
if (first_hid) free_all_hid();
if (max < 1) return 0;
if (!rx_event) {
rx_event = CreateEvent(NULL, TRUE, TRUE, NULL);
tx_event = CreateEvent(NULL, TRUE, TRUE, NULL);
InitializeCriticalSection(&rx_mutex);
InitializeCriticalSection(&tx_mutex);
}
HidD_GetHidGuid(&guid);
info = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (info == INVALID_HANDLE_VALUE) return 0;
for (index=0; 1 ;index++) {
iface.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
ret = SetupDiEnumDeviceInterfaces(info, NULL, &guid, index, &iface);
if (!ret) return count;
SetupDiGetInterfaceDeviceDetail(info, &iface, NULL, 0, &reqd_size, NULL);
details = (SP_DEVICE_INTERFACE_DETAIL_DATA *)malloc(reqd_size);
if (details == NULL) continue;
memset(details, 0, reqd_size);
details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
ret = SetupDiGetDeviceInterfaceDetail(info, &iface, details,
reqd_size, NULL, NULL);
if (!ret) {
free(details);
continue;
}
h = CreateFile(details->DevicePath, GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
free(details);
if (h == INVALID_HANDLE_VALUE) continue;
attrib.Size = sizeof(HIDD_ATTRIBUTES);
ret = HidD_GetAttributes(h, &attrib);
//printf("vid: %4x\n", attrib.VendorID);
if (!ret || (vid > 0 && attrib.VendorID != vid) ||
(pid > 0 && attrib.ProductID != pid) ||
!HidD_GetPreparsedData(h, &hid_data)) {
CloseHandle(h);
continue;
}
if (!HidP_GetCaps(hid_data, &capabilities) ||
(usage_page > 0 && capabilities.UsagePage != usage_page) ||
(usage > 0 && capabilities.Usage != usage)) {
HidD_FreePreparsedData(hid_data);
CloseHandle(h);
continue;
}
HidD_FreePreparsedData(hid_data);
hid = (struct hid_struct *)malloc(sizeof(struct hid_struct));
if (!hid) {
CloseHandle(h);
continue;
}
hid->handle = h;
hid->open = 1;
add_hid(hid);
count++;
if (count >= max) return count;
}
return count;
}
BOOLEAN
OpenHidDevice (
IN PCHAR DevicePath,
IN BOOL HasReadAccess,
IN BOOL HasWriteAccess,
IN BOOL IsOverlapped,
IN BOOL IsExclusive,
IN OUT PHID_DEVICE HidDevice
)
/*++
RoutineDescription:
Given the HardwareDeviceInfo, representing a handle to the plug and
play information, and deviceInfoData, representing a specific hid device,
open that device and fill in all the relivant information in the given
HID_DEVICE structure.
return if the open and initialization was successfull or not.
--*/
{
DWORD accessFlags = 0;
DWORD sharingFlags = 0;
BOOLEAN bSuccess;
INT iDevicePathSize;
HRESULT stringReturn;
iDevicePathSize = strlen(DevicePath) + 1;
HidDevice -> DevicePath = malloc(iDevicePathSize);
if (NULL == HidDevice -> DevicePath)
{
return (FALSE);
}
stringReturn = StringCbCopy(HidDevice -> DevicePath, iDevicePathSize, DevicePath);
if (HasReadAccess)
{
accessFlags |= GENERIC_READ;
}
if (HasWriteAccess)
{
accessFlags |= GENERIC_WRITE;
}
if (!IsExclusive)
{
sharingFlags = FILE_SHARE_READ | FILE_SHARE_WRITE;
}
//
// The hid.dll api's do not pass the overlapped structure into deviceiocontrol
// so to use them we must have a non overlapped device. If the request is for
// an overlapped device we will close the device below and get a handle to an
// overlapped device
//
HidDevice->HidDevice = CreateFile (DevicePath,
accessFlags,
sharingFlags,
NULL, // no SECURITY_ATTRIBUTES structure
OPEN_EXISTING, // No special create flags
0, // Open device as non-overlapped so we can get data
NULL); // No template file
if (INVALID_HANDLE_VALUE == HidDevice->HidDevice)
{
free(HidDevice -> DevicePath);
HidDevice -> DevicePath = INVALID_HANDLE_VALUE ;
return FALSE;
}
HidDevice -> OpenedForRead = HasReadAccess;
HidDevice -> OpenedForWrite = HasWriteAccess;
HidDevice -> OpenedOverlapped = IsOverlapped;
HidDevice -> OpenedExclusive = IsExclusive;
//
// If the device was not opened as overlapped, then fill in the rest of the
// HidDevice structure. However, if opened as overlapped, this handle cannot
// be used in the calls to the HidD_ exported functions since each of these
// functions does synchronous I/O.
//
if (!HidD_GetPreparsedData (HidDevice->HidDevice, &HidDevice->Ppd))
{
free(HidDevice -> DevicePath);
HidDevice -> DevicePath = NULL ;
CloseHandle(HidDevice -> HidDevice);
HidDevice -> HidDevice = INVALID_HANDLE_VALUE ;
return FALSE;
}
if (!HidD_GetAttributes (HidDevice->HidDevice, &HidDevice->Attributes))
{
free(HidDevice -> DevicePath);
HidDevice -> DevicePath = NULL;
CloseHandle(HidDevice -> HidDevice);
HidDevice -> HidDevice = INVALID_HANDLE_VALUE;
HidD_FreePreparsedData (HidDevice->Ppd);
HidDevice->Ppd = NULL;
return FALSE;
}
if (!HidP_GetCaps (HidDevice->Ppd, &HidDevice->Caps))
{
free(HidDevice -> DevicePath);
HidDevice -> DevicePath = NULL;
CloseHandle(HidDevice -> HidDevice);
HidDevice -> HidDevice = INVALID_HANDLE_VALUE;
HidD_FreePreparsedData (HidDevice->Ppd);
HidDevice->Ppd = NULL;
return FALSE;
}
//
// At this point the client has a choice. It may chose to look at the
// Usage and Page of the top level collection found in the HIDP_CAPS
// structure. In this way it could just use the usages it knows about.
// If either HidP_GetUsages or HidP_GetUsageValue return an error then
// that particular usage does not exist in the report.
// This is most likely the preferred method as the application can only
// use usages of which it already knows.
// In this case the app need not even call GetButtonCaps or GetValueCaps.
//
// In this example, however, we will call FillDeviceInfo to look for all
// of the usages in the device.
//
bSuccess = FillDeviceInfo(HidDevice);
if (FALSE == bSuccess)
{
CloseHidDevice(HidDevice);
return (FALSE);
}
if (IsOverlapped)
{
CloseHandle(HidDevice->HidDevice);
HidDevice->HidDevice = CreateFile (DevicePath,
accessFlags,
sharingFlags,
NULL, // no SECURITY_ATTRIBUTES structure
OPEN_EXISTING, // No special create flags
FILE_FLAG_OVERLAPPED, // Now we open the device as overlapped
NULL); // No template file
if (INVALID_HANDLE_VALUE == HidDevice->HidDevice)
{
CloseHidDevice(HidDevice);
return FALSE;
}
}
return (TRUE);
}
bool CLCDConnectionLogitech::HIDInit()
{
if (GetConnectionState() != CONNECTED ||
m_pConnectedDevice->GetIndex() != LGLCD_DEVICE_BW) //LGLCD_DEVICE_FAMILY_KEYBOARD_G15)
return false;
// Logitech G15
int VendorID = 0x046d;
int ProductID = 0xc222;
//Use a series of API calls to find a HID with a specified Vendor IF and Product ID.
HIDD_ATTRIBUTES Attributes;
SP_DEVICE_INTERFACE_DATA devInfoData;
bool LastDevice = FALSE;
int MemberIndex = 0;
LONG Result;
DWORD Length = 0;
PSP_DEVICE_INTERFACE_DETAIL_DATA detailData = NULL;
HANDLE hDevInfo = NULL;
GUID HidGuid;
ULONG Required = 0;
bool MyDeviceDetected = false;
/*
API function: HidD_GetHidGuid
Get the GUID for all system HIDs.
Returns: the GUID in HidGuid.
*/
HidD_GetHidGuid(&HidGuid);
/*
API function: SetupDiGetClassDevs
Returns: a handle to a device information set for all installed devices.
Requires: the GUID returned by GetHidGuid.
*/
hDevInfo = SetupDiGetClassDevs
(&HidGuid,
NULL,
NULL,
DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);
devInfoData.cbSize = sizeof(devInfoData);
//Step through the available devices looking for the one we want.
//Quit on detecting the desired device or checking all available devices without success.
MemberIndex = 0;
LastDevice = FALSE;
do
{
/*
API function: SetupDiEnumDeviceInterfaces
On return, MyDeviceInterfaceData contains the handle to a
SP_DEVICE_INTERFACE_DATA structure for a detected device.
Requires:
The DeviceInfoSet returned in SetupDiGetClassDevs.
The HidGuid returned in GetHidGuid.
An index to specify a device.
*/
Result = SetupDiEnumDeviceInterfaces
(hDevInfo,
0,
&HidGuid,
MemberIndex,
&devInfoData);
if (Result != 0)
{
//A device has been detected, so get more information about it.
/*
API function: SetupDiGetDeviceInterfaceDetail
Returns: an SP_DEVICE_INTERFACE_DETAIL_DATA structure
containing information about a device.
To retrieve the information, call this function twice.
The first time returns the size of the structure in Length.
The second time returns a pointer to the data in DeviceInfoSet.
Requires:
A DeviceInfoSet returned by SetupDiGetClassDevs
The SP_DEVICE_INTERFACE_DATA structure returned by SetupDiEnumDeviceInterfaces.
The final parameter is an optional pointer to an SP_DEV_INFO_DATA structure.
This application doesn't retrieve or use the structure.
If retrieving the structure, set
MyDeviceInfoData.cbSize = length of MyDeviceInfoData.
and pass the structure's address.
*/
//Get the Length value.
//The call will return with a "buffer too small" error which can be ignored.
Result = SetupDiGetDeviceInterfaceDetail
(hDevInfo,
&devInfoData,
NULL,
0,
&Length,
NULL);
//Allocate memory for the hDevInfo structure, using the returned Length.
detailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(Length);
//Set cbSize in the detailData structure.
detailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
//Call the function again, this time passing it the returned buffer size.
Result = SetupDiGetDeviceInterfaceDetail
(hDevInfo,
&devInfoData,
detailData,
Length,
&Required,
NULL);
// Open a handle to the device.
// To enable retrieving information about a system mouse or keyboard,
// don't request Read or Write access for this handle.
/*
API function: CreateFile
Returns: a handle that enables reading and writing to the device.
Requires:
The DevicePath in the detailData structure
returned by SetupDiGetDeviceInterfaceDetail.
*/
m_hHIDDeviceHandle = CreateFile
(detailData->DevicePath,
FILE_GENERIC_READ | FILE_GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
(LPSECURITY_ATTRIBUTES)NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
/*
API function: HidD_GetAttributes
Requests information from the device.
Requires: the handle returned by CreateFile.
Returns: a HIDD_ATTRIBUTES structure containing
the Vendor ID, Product ID, and Product Version Number.
Use this information to decide if the detected device is
the one we're looking for.
*/
//Set the Size to the number of bytes in the structure.
Attributes.Size = sizeof(Attributes);
Result = HidD_GetAttributes
(m_hHIDDeviceHandle,
&Attributes);
//Is it the desired device?
MyDeviceDetected = FALSE;
if (Attributes.VendorID == VendorID)
{
if (Attributes.ProductID == ProductID)
{
//Both the Vendor ID and Product ID match.
MyDeviceDetected = TRUE;
}
else
CloseHandle(m_hHIDDeviceHandle);
}
else
CloseHandle(m_hHIDDeviceHandle);
//Free the memory used by the detailData structure (no longer needed).
free(detailData);
}
else
LastDevice = TRUE;
MemberIndex = MemberIndex + 1;
} //do
while ((LastDevice == FALSE) && (MyDeviceDetected == FALSE));
if (MyDeviceDetected)
{
PHIDP_PREPARSED_DATA PreparsedData;
HidD_GetPreparsedData
(m_hHIDDeviceHandle,
&PreparsedData);
HidP_GetCaps
(PreparsedData,
&m_HIDCapabilities);
HidD_FreePreparsedData(PreparsedData);
}
//Free the memory reserved for hDevInfo by SetupDiClassDevs.
SetupDiDestroyDeviceInfoList(hDevInfo);
return MyDeviceDetected;
}
bool Controller::registerController(int pDeviceId)
{
//Required variables to iterate over the device interface
DWORD result = 0;
LPGUID hidguid = (LPGUID)malloc(sizeof(GUID));
HDEVINFO deviceset;
PSP_DEVICE_INTERFACE_DATA deviceInterfaceData = nullptr;
PSP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceInfo = nullptr;
DWORD buffersize = 0;
//malloc check
CHECK_NULL(hidguid, SETUP_ERROR);
//get hid guid
HidD_GetHidGuid(hidguid);
//get device list
deviceset = SetupDiGetClassDevs(hidguid, nullptr, nullptr, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (deviceset == INVALID_HANDLE_VALUE)
{
goto SETUP_ERROR;
}
int deviceindex = 0;
deviceInterfaceData = (PSP_DEVICE_INTERFACE_DATA)malloc(sizeof(SP_DEVICE_INTERFACE_DATA));
//malloc check
CHECK_NULL(deviceInterfaceData, SETUP_ERROR);
deviceInterfaceData->cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
//iterate through devices
while (SetupDiEnumDeviceInterfaces(deviceset, nullptr, hidguid, deviceindex, deviceInterfaceData))
{
//this should fail originally in order to get buffer size
if (deviceInterfaceInfo != nullptr)
{
free(deviceInterfaceInfo);
deviceInterfaceInfo = 0;
}
if (SetupDiGetDeviceInterfaceDetail(deviceset, deviceInterfaceData, nullptr, 0, (PDWORD)&buffersize, nullptr) ||
GetLastError() != ERROR_INSUFFICIENT_BUFFER)
{
goto SETUP_ERROR;
}
deviceInterfaceInfo = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(buffersize);
//malloc check
CHECK_NULL(deviceInterfaceInfo, SETUP_ERROR);
deviceInterfaceInfo->cbSize = sizeof(*deviceInterfaceInfo);
//device info buffer allocated, get details
if (!SetupDiGetDeviceInterfaceDetail(deviceset, deviceInterfaceData, deviceInterfaceInfo, buffersize, (PDWORD)&buffersize, nullptr))
{
goto SETUP_ERROR;
}
//you must pass in the device id of the hid client to read from
if (deviceindex == pDeviceId)
{
_controllerHandle = CreateFile(
deviceInterfaceInfo->DevicePath,
GENERIC_READ | GENERIC_WRITE,
0,
nullptr,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
nullptr
);
if (_controllerHandle == INVALID_HANDLE_VALUE)
{
Log(L"Error opening HID Device: Error No: %d", GetLastError());
goto HID_SETUP_FAILURE;
}
else
{
//get preparsed data
if (HidD_GetPreparsedData(_controllerHandle, &_pPreparsedData) == FALSE)
{
goto HID_SETUP_FAILURE;
}
//get device capabilities
_pCaps = (PHIDP_CAPS)(malloc(sizeof(HIDP_CAPS)));
//malloc check
CHECK_NULL(_pCaps, HID_SETUP_FAILURE);
_succ = HidP_GetCaps(_pPreparsedData, _pCaps);
CHECK_HID(_succ, HID_SETUP_FAILURE);
//get button capabilities
_pButtonCaps = (PHIDP_BUTTON_CAPS)malloc(sizeof(HIDP_BUTTON_CAPS)* _pCaps->NumberInputButtonCaps);
//malloc check
CHECK_NULL(_pButtonCaps, HID_SETUP_FAILURE);
USHORT numInputButtonCaps = _pCaps->NumberInputButtonCaps;
_succ = HidP_GetButtonCaps(HidP_Input, _pButtonCaps, &numInputButtonCaps, _pPreparsedData);
CHECK_HID(_succ, HID_SETUP_FAILURE);
//prep the button usage data structs
_pButtonUsages = (PUSAGE)malloc(sizeof(USAGE)*(_pButtonCaps->Range.DataIndexMax - _pButtonCaps->Range.DataIndexMin + 1));
//malloc check
CHECK_NULL(_pButtonUsages, HID_SETUP_FAILURE);
ULONG numButtonUsages = _pButtonCaps->Range.UsageMax - _pButtonCaps->Range.UsageMin + 1;
//get max data length
_pInputReport = (PCHAR)malloc(_pCaps->InputReportByteLength);
//malloc check
CHECK_NULL(_pInputReport, HID_SETUP_FAILURE);
DWORD readbytecount = 0;
//get value caps
_pValueCaps = (PHIDP_VALUE_CAPS)malloc(sizeof(HIDP_VALUE_CAPS)* _pCaps->NumberInputValueCaps);
//malloc check
CHECK_NULL(_pValueCaps, HID_SETUP_FAILURE);
USHORT numInputValueCaps = _pCaps->NumberInputValueCaps;
_succ = HidP_GetValueCaps(HidP_Input, _pValueCaps, &numInputValueCaps, _pPreparsedData);
CHECK_HID(_succ, HID_SETUP_FAILURE);
goto SETUP_DONE;
HID_SETUP_FAILURE:
clearHidStructures();
return false;
}
}
deviceindex++;
deviceInterfaceData->cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
}
goto SETUP_DONE;
SETUP_ERROR:
int err = GetLastError();
return false;
SETUP_DONE:
if (deviceset != INVALID_HANDLE_VALUE && deviceset != nullptr)
{
SetupDiDestroyDeviceInfoList(deviceset);
}
if (hidguid != nullptr)
{
free(hidguid);
}
if (deviceInterfaceData != nullptr)
{
free(deviceInterfaceData);
}
if (deviceInterfaceInfo != nullptr)
{
free(deviceInterfaceInfo);
}
return true;
}
/*********************************************************************
*
* _AddConnection
*
* Function description
* Checks the information about the queried device, if complying with
* out vendor page information, add the device to the connection list.
*
*
* Return value:
* 1 - O.K., HID device added.
* 0 - HID device not compatible.
*
*/
static int _AddConnection(HANDLE hDevList, SP_DEVICE_INTERFACE_DATA * pDevData, CONN_INFO * pConnInfo) {
SP_INTERFACE_DEVICE_DETAIL_DATA * pDevDetail;
DWORD ReqLen;
BOOL succ;
HANDLE hDevice;
int r;
r = 0;
ReqLen = 0;
pDevDetail = NULL;
// Get length of INTERFACE_DEVICE_DETAIL_DATA, allocate buffer
// This function call returns the system error "buffer too small" (code 122).
// We ignore this return code.
SetupDiGetDeviceInterfaceDetail(hDevList, pDevData, NULL, ReqLen, &ReqLen, NULL);
pDevDetail = (SP_INTERFACE_DEVICE_DETAIL_DATA*)malloc(ReqLen);
if (pDevDetail == NULL ) {
// Memory allocation failed
return 0;
}
// Now get the INTERFACE_DEVICE_DETAIL_DATA struct
ZeroMemory(pDevDetail,ReqLen);
pDevDetail->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);
succ = SetupDiGetDeviceInterfaceDetail(hDevList, pDevData, pDevDetail, ReqLen, &ReqLen, NULL);
if (succ == FALSE) {
//
// Could not retrieve information about the device
//
free(pDevDetail);
return 0;
}
//
// Open a device handle to the HID device and retriece HID information
//
hDevice = CreateFile(pDevDetail->DevicePath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (hDevice != INVALID_HANDLE_VALUE) {
PHIDP_PREPARSED_DATA pPreparsedData;
HIDP_CAPS Capabilities;
//
// Parse the information from HID device
//
HidD_GetPreparsedData(hDevice, &pPreparsedData);
HidP_GetCaps(pPreparsedData, &Capabilities);
//
// Does the device match the Vendor specific page implementation?
//
if (Capabilities.UsagePage == _VendorPage) {
HIDD_ATTRIBUTES Attributes;
memset(&Attributes, 0, sizeof(Attributes));
Attributes.Size = sizeof(Attributes);
HidD_GetAttributes(hDevice, &Attributes);
strcpy(pConnInfo->acDevicePath, pDevDetail->DevicePath);
pConnInfo->InputReportByteLength = Capabilities.InputReportByteLength;
pConnInfo->OutputReportByteLength = Capabilities.OutputReportByteLength;
pConnInfo->ProductId = Attributes.ProductID;
pConnInfo->VendorId = Attributes.VendorID;
r = 1;
}
CloseHandle(hDevice);
}
free(pDevDetail);
return r;
}
// open - open 1 or more devices
//
// Inputs:
// max = maximum number of devices to open
// vid = Vendor ID, or -1 if any
// pid = Product ID, or -1 if any
// usage_page = top level usage page, or -1 if any
// usage = top level usage number, or -1 if any
// Output:
// actual number of devices opened
//
int pjrc_rawhid::open(int max, int vid, int pid, int usage_page, int usage)
{
GUID guid;
HDEVINFO info;
DWORD index=0, reqd_size;
SP_DEVICE_INTERFACE_DATA iface;
SP_DEVICE_INTERFACE_DETAIL_DATA *details;
HIDD_ATTRIBUTES attrib;
PHIDP_PREPARSED_DATA hid_data;
HIDP_CAPS capabilities;
HANDLE h;
BOOL ret;
hid_t *hid;
int count=0;
if (first_hid) free_all_hid();
if (max < 1) return 0;
if (!rx_event)
{
rx_event = CreateEvent(NULL, TRUE, TRUE, NULL);
tx_event = CreateEvent(NULL, TRUE, TRUE, NULL);
InitializeCriticalSection(&rx_mutex);
InitializeCriticalSection(&tx_mutex);
}
HidD_GetHidGuid(&guid);
info = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (info == INVALID_HANDLE_VALUE) return 0;
for (index=0; 1 ;index++)
{
iface.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
ret = SetupDiEnumDeviceInterfaces(info, NULL, &guid, index, &iface);
if (!ret) return count;
SetupDiGetInterfaceDeviceDetail(info, &iface, NULL, 0, &reqd_size, NULL);
details = (SP_DEVICE_INTERFACE_DETAIL_DATA *)malloc(reqd_size);
if (details == NULL) continue;
memset(details, 0, reqd_size);
details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
ret = SetupDiGetDeviceInterfaceDetail(info, &iface, details, reqd_size, NULL, NULL);
if (!ret)
{
free(details);
continue;
}
h = CreateFile(details->DevicePath, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
if (h == INVALID_HANDLE_VALUE)
{
DWORD err = GetLastError();
// I get ERROR_ACCESS_DENIED with most/all my input devices (mice/trackballs/tablet).
// Let's not log it :)
if (err == ERROR_ACCESS_DENIED)
{
free(details);
continue;
}
// qDebug wipes the GetLastError() it seems, so do that after print_win32_err().
print_win32_err(err);
qDebug() << "Problem opening handle, path: " << QString().fromWCharArray(details->DevicePath);
free(details);
continue;
}
free(details);
attrib.Size = sizeof(HIDD_ATTRIBUTES);
ret = HidD_GetAttributes(h, &attrib);
//printf("vid: %4x\n", attrib.VendorID);
if (!ret || (vid > 0 && attrib.VendorID != vid) ||
(pid > 0 && attrib.ProductID != pid) ||
!HidD_GetPreparsedData(h, &hid_data))
{
CloseHandle(h);
continue;
}
if (!HidP_GetCaps(hid_data, &capabilities) ||
(usage_page > 0 && capabilities.UsagePage != usage_page) ||
(usage > 0 && capabilities.Usage != usage))
{
HidD_FreePreparsedData(hid_data);
CloseHandle(h);
continue;
}
HidD_FreePreparsedData(hid_data);
hid = (struct hid_struct *)malloc(sizeof(struct hid_struct));
if (!hid)
{
CloseHandle(h);
continue;
}
// COMMTIMEOUTS CommTimeouts;
// CommTimeouts.ReadIntervalTimeout = 100; // 100ms
// CommTimeouts.ReadTotalTimeoutConstant = 5; // ms
// CommTimeouts.ReadTotalTimeoutMultiplier = 1; //
// CommTimeouts.WriteTotalTimeoutConstant = 5; // ms
// CommTimeouts.WriteTotalTimeoutMultiplier = 1; //
// if (!SetCommTimeouts(h, &CommTimeouts))
// {
//// DWORD err = GetLastError();
//
// }
qDebug("Open: Handle address: %li for num: %i", (long int) h, count);
hid->handle = h;
add_hid(hid);
count++;
if (count >= max) return count;
}
return count;
}
USBHIDDLL_API DWORD dwRead_FromHIDDevice(PHANDLE pReadHandle, BYTE byReadBuff[], DWORD len){
DWORD dwNumberOfBytesRead;
DWORD dwResponseSW = 0;
HIDP_CAPS Capabilities;
PHIDP_PREPARSED_DATA HidParsedData;
OVERLAPPED HidOverlapped;
HANDLE hEvent;
LPBYTE lpReadBuff = (LPBYTE)malloc(0x21);
/* Create a new event for report capture */
hEvent = CreateEvent(NULL, TRUE, TRUE, "");
/* fill the HidOverlapped structure so that Windows knows which
event to cause when the device sends an IN report */
HidOverlapped.hEvent = hEvent;
HidOverlapped.Offset = 0;
HidOverlapped.OffsetHigh = 0;
BOOL bResult = false;
// LPCOMMTIMEOUTS lpCommitTimes = (LPCOMMTIMEOUTS)malloc(sizeof(LPCOMMTIMEOUTS));
if(*pReadHandle != NULL){
HidD_GetPreparsedData(*pReadHandle, &HidParsedData);
/* extract the capabilities info */
HidP_GetCaps( HidParsedData ,&Capabilities);
/* Free the memory allocated when getting the preparsed data */
HidD_FreePreparsedData(HidParsedData);
bResult = ReadFile(*pReadHandle,
lpReadBuff,
Capabilities.InputReportByteLength,
&dwNumberOfBytesRead,
(LPOVERLAPPED)&HidOverlapped);
if ( bResult == 0 )
{
// 读取错误信息
DWORD dwResult = GetLastError();
// I/O端口繁忙
if ( dwResult == ERROR_IO_PENDING )
{
// 需挂起等待
dwResult = WaitForSingleObject ( HidOverlapped.hEvent, INFINITE );
// I/O端口正常
if ( dwResult == WAIT_OBJECT_0 )
{
// 去读取数据的正常返回值
GetOverlappedResult ( *pReadHandle, &HidOverlapped, &dwNumberOfBytesRead, FALSE );
}
else
{
// BOOL bGetTime = GetCommTimeouts(*pReadHandle, lpCommitTimes);
free(lpReadBuff);
CloseHandle(hEvent);
return -1; // 等待超时
}
}
else
{
return -1; // 不明错误
}
}
}
for(int i = 0; i < (len + 2); i ++){
byReadBuff[i] = *(lpReadBuff + i + 1);
}
dwResponseSW |= byReadBuff[len];
dwResponseSW = (dwResponseSW << 8) | (byReadBuff[len + 1]);
free(lpReadBuff);
CloseHandle(hEvent);
return dwResponseSW;
}