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-rw-r--r--winbuild/hid.c996
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diff --git a/winbuild/hid.c b/winbuild/hid.c
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-/*******************************************************
- HIDAPI - Multi-Platform library for
- communication with HID devices.
-
- Alan Ott
- Signal 11 Software
-
- 8/22/2009
-
- Copyright 2009, All Rights Reserved.
-
- At the discretion of the user of this library,
- this software may be licensed under the terms of the
- GNU General Public License v3, a BSD-Style license, or the
- original HIDAPI license as outlined in the LICENSE.txt,
- LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
- files located at the root of the source distribution.
- These files may also be found in the public source
- code repository located at:
- http://github.com/signal11/hidapi .
-********************************************************/
-
-
-/* Copy of LICENSE-orig.txt (compatible with MIT/x11 license)
-
- HIDAPI - Multi-Platform library for
- communication with HID devices.
-
- Copyright 2009, Alan Ott, Signal 11 Software.
- All Rights Reserved.
-
- This software may be used by anyone for any reason so
- long as the copyright notice in the source files
- remains intact.
-*/
-
-#include <windows.h>
-
-#ifndef _NTDEF_
-typedef LONG NTSTATUS;
-#endif
-
-#ifdef __MINGW32__
-#include <ntdef.h>
-#include <winbase.h>
-#endif
-
-#ifdef __CYGWIN__
-#include <ntdef.h>
-#define _wcsdup wcsdup
-#endif
-
-/* The maximum number of characters that can be passed into the
- HidD_Get*String() functions without it failing.*/
-#define MAX_STRING_WCHARS 0xFFF
-
-/*#define HIDAPI_USE_DDK*/
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef TCC
- typedef struct _SP_DEVINFO_DATA {
- DWORD cbSize;
- GUID ClassGuid;
- DWORD DevInst;
- ULONG_PTR Reserved;
- } SP_DEVINFO_DATA, *PSP_DEVINFO_DATA;
- typedef struct _SP_DEVICE_INTERFACE_DATA {
- DWORD cbSize;
- GUID InterfaceClassGuid;
- DWORD Flags;
- ULONG_PTR Reserved;
- } SP_DEVICE_INTERFACE_DATA, *PSP_DEVICE_INTERFACE_DATA;
- typedef struct _SP_DEVICE_INTERFACE_DETAIL_DATA {
- DWORD cbSize;
- CHAR DevicePath[ANYSIZE_ARRAY];
- } SP_DEVICE_INTERFACE_DETAIL_DATA_A, *PSP_DEVICE_INTERFACE_DETAIL_DATA_A;
- typedef PVOID HDEVINFO;
-
- HDEVINFO WINAPI SetupDiGetClassDevsA(CONST GUID*,PCSTR,HWND,DWORD);
-
- #define DIGCF_PRESENT 0x00000002
- #define DIGCF_DEVICEINTERFACE 0x00000010
- #define SPDRP_CLASS 7
- #define SPDRP_DRIVER 9
- #define FILE_DEVICE_KEYBOARD 0x0000000b
- #define METHOD_OUT_DIRECT 2
- enum
- { FILE_ANY_ACCESS = 0x00000000UL,
- FILE_SPECIAL_ACCESS = FILE_ANY_ACCESS,
- FILE_READ_ACCESS = 0x00000001UL,
- FILE_WRITE_ACCESS = 0x00000002UL
- };
- #define CTL_CODE(t,f,m,a) (((t)<<16)|((a)<<14)|((f)<<2)|(m))
-
-#else
- #include <setupapi.h>
- #include <winioctl.h>
-#endif
- #ifdef HIDAPI_USE_DDK
- #include <hidsdi.h>
- #endif
-
- /* Copied from inc/ddk/hidclass.h, part of the Windows DDK. */
- #define HID_OUT_CTL_CODE(id) \
- CTL_CODE(FILE_DEVICE_KEYBOARD, (id), METHOD_OUT_DIRECT, FILE_ANY_ACCESS)
- #define IOCTL_HID_GET_FEATURE HID_OUT_CTL_CODE(100)
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-
-
-#include "hidapi.h"
-
-#undef MIN
-#define MIN(x,y) ((x) < (y)? (x): (y))
-
-#ifdef _MSC_VER
- /* Thanks Microsoft, but I know how to use strncpy(). */
- #pragma warning(disable:4996)
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HIDAPI_USE_DDK
- /* Since we're not building with the DDK, and the HID header
- files aren't part of the SDK, we have to define all this
- stuff here. In lookup_functions(), the function pointers
- defined below are set. */
- typedef struct _HIDD_ATTRIBUTES{
- ULONG Size;
- USHORT VendorID;
- USHORT ProductID;
- USHORT VersionNumber;
- } HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES;
-
- typedef USHORT USAGE;
- typedef struct _HIDP_CAPS {
- USAGE Usage;
- USAGE UsagePage;
- USHORT InputReportByteLength;
- USHORT OutputReportByteLength;
- USHORT FeatureReportByteLength;
- USHORT Reserved[17];
- USHORT fields_not_used_by_hidapi[10];
- } HIDP_CAPS, *PHIDP_CAPS;
- typedef void* PHIDP_PREPARSED_DATA;
- #define HIDP_STATUS_SUCCESS 0x110000
-
- typedef BOOLEAN (__stdcall *HidD_GetAttributes_)(HANDLE device, PHIDD_ATTRIBUTES attrib);
- typedef BOOLEAN (__stdcall *HidD_GetSerialNumberString_)(HANDLE device, PVOID buffer, ULONG buffer_len);
- typedef BOOLEAN (__stdcall *HidD_GetManufacturerString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
- typedef BOOLEAN (__stdcall *HidD_GetProductString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
- typedef BOOLEAN (__stdcall *HidD_SetFeature_)(HANDLE handle, PVOID data, ULONG length);
- typedef BOOLEAN (__stdcall *HidD_GetFeature_)(HANDLE handle, PVOID data, ULONG length);
- typedef BOOLEAN (__stdcall *HidD_GetIndexedString_)(HANDLE handle, ULONG string_index, PVOID buffer, ULONG buffer_len);
- typedef BOOLEAN (__stdcall *HidD_GetPreparsedData_)(HANDLE handle, PHIDP_PREPARSED_DATA *preparsed_data);
- typedef BOOLEAN (__stdcall *HidD_FreePreparsedData_)(PHIDP_PREPARSED_DATA preparsed_data);
- typedef NTSTATUS (__stdcall *HidP_GetCaps_)(PHIDP_PREPARSED_DATA preparsed_data, HIDP_CAPS *caps);
- typedef BOOLEAN (__stdcall *HidD_SetNumInputBuffers_)(HANDLE handle, ULONG number_buffers);
-
- static HidD_GetAttributes_ HidD_GetAttributes;
- static HidD_GetSerialNumberString_ HidD_GetSerialNumberString;
- static HidD_GetManufacturerString_ HidD_GetManufacturerString;
- static HidD_GetProductString_ HidD_GetProductString;
- static HidD_SetFeature_ HidD_SetFeature;
- static HidD_GetFeature_ HidD_GetFeature;
- static HidD_GetIndexedString_ HidD_GetIndexedString;
- static HidD_GetPreparsedData_ HidD_GetPreparsedData;
- static HidD_FreePreparsedData_ HidD_FreePreparsedData;
- static HidP_GetCaps_ HidP_GetCaps;
- static HidD_SetNumInputBuffers_ HidD_SetNumInputBuffers;
-
- static HMODULE lib_handle = NULL;
- static BOOLEAN initialized = FALSE;
-#endif /* HIDAPI_USE_DDK */
-
-struct hid_device_ {
- HANDLE device_handle;
- BOOL blocking;
- USHORT output_report_length;
- size_t input_report_length;
- void *last_error_str;
- DWORD last_error_num;
- BOOL read_pending;
- char *read_buf;
- OVERLAPPED ol;
-};
-
-static hid_device *new_hid_device()
-{
- hid_device *dev = (hid_device*) calloc(1, sizeof(hid_device));
- dev->device_handle = INVALID_HANDLE_VALUE;
- dev->blocking = TRUE;
- dev->output_report_length = 0;
- dev->input_report_length = 0;
- dev->last_error_str = NULL;
- dev->last_error_num = 0;
- dev->read_pending = FALSE;
- dev->read_buf = NULL;
- memset(&dev->ol, 0, sizeof(dev->ol));
- dev->ol.hEvent = CreateEvent(NULL, FALSE, FALSE /*initial state f=nonsignaled*/, NULL);
-
- return dev;
-}
-
-static void free_hid_device(hid_device *dev)
-{
- CloseHandle(dev->ol.hEvent);
- CloseHandle(dev->device_handle);
- LocalFree(dev->last_error_str);
- free(dev->read_buf);
- free(dev);
-}
-
-static void register_error(hid_device *device, const char *op)
-{
- WCHAR *ptr, *msg;
-
- FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
- FORMAT_MESSAGE_FROM_SYSTEM |
- FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL,
- GetLastError(),
- MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
- (LPVOID)&msg, 0/*sz*/,
- NULL);
-
- /* Get rid of the CR and LF that FormatMessage() sticks at the
- end of the message. Thanks Microsoft! */
- ptr = msg;
- while (*ptr) {
- if (*ptr == '\r') {
- *ptr = 0x0000;
- break;
- }
- ptr++;
- }
-
- /* Store the message off in the Device entry so that
- the hid_error() function can pick it up. */
- LocalFree(device->last_error_str);
- device->last_error_str = msg;
-}
-
-#ifndef HIDAPI_USE_DDK
-static int lookup_functions()
-{
- lib_handle = LoadLibraryA("hid.dll");
- if (lib_handle) {
-#define RESOLVE(x) x = (x##_)GetProcAddress(lib_handle, #x); if (!x) return -1;
- RESOLVE(HidD_GetAttributes);
- RESOLVE(HidD_GetSerialNumberString);
- RESOLVE(HidD_GetManufacturerString);
- RESOLVE(HidD_GetProductString);
- RESOLVE(HidD_SetFeature);
- RESOLVE(HidD_GetFeature);
- RESOLVE(HidD_GetIndexedString);
- RESOLVE(HidD_GetPreparsedData);
- RESOLVE(HidD_FreePreparsedData);
- RESOLVE(HidP_GetCaps);
- RESOLVE(HidD_SetNumInputBuffers);
-#undef RESOLVE
- }
- else
- return -1;
-
- return 0;
-}
-#endif
-
-static HANDLE open_device(const char *path, BOOL enumerate)
-{
- HANDLE handle;
- DWORD desired_access = (enumerate)? 0: (GENERIC_WRITE | GENERIC_READ);
- DWORD share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
-
- handle = CreateFileA(path,
- desired_access,
- share_mode,
- NULL,
- OPEN_EXISTING,
- FILE_FLAG_OVERLAPPED,/*FILE_ATTRIBUTE_NORMAL,*/
- 0);
-
- return handle;
-}
-
-int HID_API_EXPORT hid_init(void)
-{
-#ifndef HIDAPI_USE_DDK
- if (!initialized) {
- if (lookup_functions() < 0) {
- hid_exit();
- return -1;
- }
- initialized = TRUE;
- }
-#endif
- return 0;
-}
-
-int HID_API_EXPORT hid_exit(void)
-{
-#ifndef HIDAPI_USE_DDK
- if (lib_handle)
- FreeLibrary(lib_handle);
- lib_handle = NULL;
- initialized = FALSE;
-#endif
- return 0;
-}
-
-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 = {0x4d1e55b2, 0xf16f, 0x11cf, {0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30} };
- 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;
-
-}
-
-void HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs)
-{
- /* TODO: Merge this with the Linux version. This function is platform-independent. */
- struct hid_device_info *d = devs;
- while (d) {
- struct hid_device_info *next = d->next;
- free(d->path);
- free(d->serial_number);
- free(d->manufacturer_string);
- free(d->product_string);
- free(d);
- d = next;
- }
-}
-
-
-HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number)
-{
- /* TODO: Merge this functions with the Linux version. This function should be platform independent. */
- struct hid_device_info *devs, *cur_dev;
- const char *path_to_open = NULL;
- hid_device *handle = NULL;
-
- devs = hid_enumerate(vendor_id, product_id);
- cur_dev = devs;
- while (cur_dev) {
- if (cur_dev->vendor_id == vendor_id &&
- cur_dev->product_id == product_id) {
- if (serial_number) {
- if (wcscmp(serial_number, cur_dev->serial_number) == 0) {
- path_to_open = cur_dev->path;
- break;
- }
- }
- else {
- path_to_open = cur_dev->path;
- break;
- }
- }
- cur_dev = cur_dev->next;
- }
-
- if (path_to_open) {
- /* Open the device */
- handle = hid_open_path(path_to_open);
- }
-
- hid_free_enumeration(devs);
-
- return handle;
-}
-
-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;
-}
-
-int HID_API_EXPORT HID_API_CALL hid_write(hid_device *dev, const unsigned char *data, size_t length)
-{
- DWORD bytes_written;
- BOOL res;
-
- OVERLAPPED ol;
- unsigned char *buf;
- memset(&ol, 0, sizeof(ol));
-
- /* Make sure the right number of bytes are passed to WriteFile. Windows
- expects the number of bytes which are in the _longest_ report (plus
- one for the report number) bytes even if the data is a report
- which is shorter than that. Windows gives us this value in
- caps.OutputReportByteLength. If a user passes in fewer bytes than this,
- create a temporary buffer which is the proper size. */
- if (length >= dev->output_report_length) {
- /* The user passed the right number of bytes. Use the buffer as-is. */
- buf = (unsigned char *) data;
- } else {
- /* Create a temporary buffer and copy the user's data
- into it, padding the rest with zeros. */
- buf = (unsigned char *) malloc(dev->output_report_length);
- memcpy(buf, data, length);
- memset(buf + length, 0, dev->output_report_length - length);
- length = dev->output_report_length;
- }
-
- res = WriteFile(dev->device_handle, buf, (DWORD)length, NULL, &ol);
-
- if (!res) {
- if (GetLastError() != ERROR_IO_PENDING) {
- /* WriteFile() failed. Return error. */
- register_error(dev, "WriteFile");
- bytes_written = -1;
- goto end_of_function;
- }
- }
-
- /* Wait here until the write is done. This makes
- hid_write() synchronous. */
- res = GetOverlappedResult(dev->device_handle, &ol, &bytes_written, TRUE/*wait*/);
- if (!res) {
- /* The Write operation failed. */
- register_error(dev, "WriteFile");
- bytes_written = -1;
- goto end_of_function;
- }
-
-end_of_function:
- if (buf != data)
- free(buf);
-
- return bytes_written;
-}
-
-
-int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds)
-{
- DWORD bytes_read = 0;
- size_t copy_len = 0;
- BOOL res;
-
- /* Copy the handle for convenience. */
- HANDLE ev = dev->ol.hEvent;
-
- if (!dev->read_pending) {
- /* Start an Overlapped I/O read. */
- dev->read_pending = TRUE;
- memset(dev->read_buf, 0, dev->input_report_length);
- ResetEvent(ev);
- res = ReadFile(dev->device_handle, dev->read_buf, (DWORD)dev->input_report_length, &bytes_read, &dev->ol);
-
- if (!res) {
- if (GetLastError() != ERROR_IO_PENDING) {
- /* ReadFile() has failed.
- Clean up and return error. */
- CancelIo(dev->device_handle);
- dev->read_pending = FALSE;
- goto end_of_function;
- }
- }
- }
-
- if (milliseconds >= 0) {
- /* See if there is any data yet. */
- res = WaitForSingleObject(ev, milliseconds);
- if (res != WAIT_OBJECT_0) {
- /* There was no data this time. Return zero bytes available,
- but leave the Overlapped I/O running. */
- return 0;
- }
- }
-
- /* Either WaitForSingleObject() told us that ReadFile has completed, or
- we are in non-blocking mode. Get the number of bytes read. The actual
- data has been copied to the data[] array which was passed to ReadFile(). */
- res = GetOverlappedResult(dev->device_handle, &dev->ol, &bytes_read, TRUE/*wait*/);
-
- /* Set pending back to false, even if GetOverlappedResult() returned error. */
- dev->read_pending = FALSE;
-
- if (res && bytes_read > 0) {
- if (dev->read_buf[0] == 0x0) {
- /* If report numbers aren't being used, but Windows sticks a report
- number (0x0) on the beginning of the report anyway. To make this
- work like the other platforms, and to make it work more like the
- HID spec, we'll skip over this byte. */
- bytes_read--;
- copy_len = length > bytes_read ? bytes_read : length;
- memcpy(data, dev->read_buf+1, copy_len);
- }
- else {
- /* Copy the whole buffer, report number and all. */
- copy_len = length > bytes_read ? bytes_read : length;
- memcpy(data, dev->read_buf, copy_len);
- }
- }
-
-end_of_function:
- if (!res) {
- register_error(dev, "GetOverlappedResult");
- return -1;
- }
-
- return (int)copy_len;
-}
-
-int HID_API_EXPORT HID_API_CALL hid_read(hid_device *dev, unsigned char *data, size_t length)
-{
- return hid_read_timeout(dev, data, length, (dev->blocking)? -1: 0);
-}
-
-int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *dev, int nonblock)
-{
- dev->blocking = !nonblock;
- return 0; /* Success */
-}
-
-int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *dev, const unsigned char *data, size_t length)
-{
- BOOL res = HidD_SetFeature(dev->device_handle, (PVOID)data, (ULONG)length);
- if (!res) {
- register_error(dev, "HidD_SetFeature");
- return -1;
- }
-
- return (int)length;
-}
-
-
-int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *dev, unsigned char *data, size_t length)
-{
- BOOL res;
-#if 0
- res = HidD_GetFeature(dev->device_handle, data, length);
- if (!res) {
- register_error(dev, "HidD_GetFeature");
- return -1;
- }
- return 0; /* HidD_GetFeature() doesn't give us an actual length, unfortunately */
-#else
- DWORD bytes_returned;
-
- OVERLAPPED ol;
- memset(&ol, 0, sizeof(ol));
-
- res = DeviceIoControl(dev->device_handle,
- IOCTL_HID_GET_FEATURE,
- data, (DWORD)length,
- data, (DWORD)length,
- &bytes_returned, &ol);
-
- if (!res) {
- if (GetLastError() != ERROR_IO_PENDING) {
- /* DeviceIoControl() failed. Return error. */
- register_error(dev, "Send Feature Report DeviceIoControl");
- return -1;
- }
- }
-
- /* Wait here until the write is done. This makes
- hid_get_feature_report() synchronous. */
- res = GetOverlappedResult(dev->device_handle, &ol, &bytes_returned, TRUE/*wait*/);
- if (!res) {
- /* The operation failed. */
- register_error(dev, "Send Feature Report GetOverLappedResult");
- return -1;
- }
-
- /* bytes_returned does not include the first byte which contains the
- report ID. The data buffer actually contains one more byte than
- bytes_returned. */
- bytes_returned++;
-
- return bytes_returned;
-#endif
-}
-
-void HID_API_EXPORT HID_API_CALL hid_close(hid_device *dev)
-{
- if (!dev)
- return;
- CancelIo(dev->device_handle);
- free_hid_device(dev);
-}
-
-int HID_API_EXPORT_CALL HID_API_CALL hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen)
-{
- BOOL res;
-
- res = HidD_GetManufacturerString(dev->device_handle, string, (ULONG)(sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS)));
- if (!res) {
- register_error(dev, "HidD_GetManufacturerString");
- return -1;
- }
-
- return 0;
-}
-
-int HID_API_EXPORT_CALL HID_API_CALL hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen)
-{
- BOOL res;
-
- res = HidD_GetProductString(dev->device_handle, string, (ULONG)(sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS)));
- if (!res) {
- register_error(dev, "HidD_GetProductString");
- return -1;
- }
-
- return 0;
-}
-
-int HID_API_EXPORT_CALL HID_API_CALL hid_get_serial_number_string(hid_device *dev, wchar_t *string, size_t maxlen)
-{
- BOOL res;
-
- res = HidD_GetSerialNumberString(dev->device_handle, string, (ULONG)(sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS)));
- if (!res) {
- register_error(dev, "HidD_GetSerialNumberString");
- return -1;
- }
-
- return 0;
-}
-
-int HID_API_EXPORT_CALL HID_API_CALL hid_get_indexed_string(hid_device *dev, int string_index, wchar_t *string, size_t maxlen)
-{
- BOOL res;
-
- res = HidD_GetIndexedString(dev->device_handle, string_index, string, (ULONG)(sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS)));
- if (!res) {
- register_error(dev, "HidD_GetIndexedString");
- return -1;
- }
-
- return 0;
-}
-
-
-HID_API_EXPORT const wchar_t * HID_API_CALL hid_error(hid_device *dev)
-{
- return (wchar_t*)dev->last_error_str;
-}
-
-
-/*#define PICPGM*/
-/*#define S11*/
-#define P32
-#ifdef S11
- unsigned short VendorID = 0xa0a0;
- unsigned short ProductID = 0x0001;
-#endif
-
-#ifdef P32
- unsigned short VendorID = 0x04d8;
- unsigned short ProductID = 0x3f;
-#endif
-
-
-#ifdef PICPGM
- unsigned short VendorID = 0x04d8;
- unsigned short ProductID = 0x0033;
-#endif
-
-
-#if 0
-int __cdecl main(int argc, char* argv[])
-{
- int res;
- unsigned char buf[65];
-
- UNREFERENCED_PARAMETER(argc);
- UNREFERENCED_PARAMETER(argv);
-
- /* Set up the command buffer. */
- memset(buf,0x00,sizeof(buf));
- buf[0] = 0;
- buf[1] = 0x81;
-
-
- /* Open the device. */
- int handle = open(VendorID, ProductID, L"12345");
- if (handle < 0)
- printf("unable to open device\n");
-
-
- /* Toggle LED (cmd 0x80) */
- buf[1] = 0x80;
- res = write(handle, buf, 65);
- if (res < 0)
- printf("Unable to write()\n");
-
- /* Request state (cmd 0x81) */
- buf[1] = 0x81;
- write(handle, buf, 65);
- if (res < 0)
- printf("Unable to write() (2)\n");
-
- /* Read requested state */
- read(handle, buf, 65);
- if (res < 0)
- printf("Unable to read()\n");
-
- /* Print out the returned buffer. */
- for (int i = 0; i < 4; i++)
- printf("buf[%d]: %d\n", i, buf[i]);
-
- return 0;
-}
-#endif
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif