Getting very close to a Windows port.

7 files changed, 1595 insertions, 31 deletions

diff --git a/include/libsurvive/survive.h b/include/libsurvive/survive.h
index 5f2d711..349a93e 100644
--- a/include/libsurvive/survive.h
+++ b/include/libsurvive/survive.h
@@ -139,7 +139,7 @@ void survive_default_angle_process( SurviveObject * so, int sensor_id, int acode
 void   RegisterDriver( const char * name, void * data );
 
 #define REGISTER_LINKTIME( func ) \
-	void __attribute__((constructor)) LTRegister##func() { RegisterDriver( #func, &func ); }
+	void __attribute__((constructor)) REGISTER##func() { RegisterDriver( #func, &func ); }
 
 
 
diff --git a/src/survive.c b/src/survive.c
index 0e567ad..1b5bed1 100755
--- a/src/survive.c
+++ b/src/survive.c
@@ -14,7 +14,6 @@
 static int did_runtime_symnum;
 int SymnumCheck( const char * path, const char * name, void * location, long size )
 {
-	printf( "--->%s\n", name );
 	if( strncmp( name, "REGISTER", 8 ) == 0 )
 	{
 		typedef void (*sf)();
@@ -41,7 +40,11 @@ static void survivenote( struct SurviveContext * ctx, const char * fault )
 SurviveContext * survive_init( int headless )
 {
 #ifdef RUNTIME_SYMNUM
-	EnumerateSymbols( SymnumCheck );
+	if( !did_runtime_symnum )
+	{
+		EnumerateSymbols( SymnumCheck );
+		did_runtime_symnum = 1;
+	}
 #endif
 
 	int r = 0;
diff --git a/src/survive_vive.c b/src/survive_vive.c
index 0cae6f0..003dd5e 100755
--- a/src/survive_vive.c
+++ b/src/survive_vive.c
@@ -12,14 +12,24 @@
 
 #include <survive.h>
 #include <jsmn.h>
-#include <libusb-1.0/libusb.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <errno.h>
 #include <string.h>
 #include <sys/stat.h>
 
+
+#ifdef HIDAPI
+#include <os_generic.h>
+#if defined(WINDOWS) || defined(WIN32)
+#include <windows.h>
+#undef WCHAR_MAX
+#endif
+#include <hidapi.h>
+#else
+#include <libusb-1.0/libusb.h>
+#endif
+
 struct SurviveViveData;
 
 const short vidpids[] = {
@@ -60,12 +70,20 @@ typedef struct SurviveViveData SurviveViveData;
 
 typedef void (*usb_callback)( SurviveUSBInterface * ti );
 
+#ifdef HIDAPI
+#define USBHANDLE hid_device *
+#else
+#define USBHANDLE libusb_device_handle *
+#endif
+
 struct SurviveUSBInterface
 {
 	SurviveViveData * sv;
 	SurviveContext * ctx;
 
+#ifndef HIDAPI
 	struct libusb_transfer * transfer;
+#endif
 	SurviveObject * assoc_obj;
 	int actual_len;
 	uint8_t buffer[INTBUFFSIZE];
@@ -78,14 +96,20 @@ struct SurviveViveData
 {
 	SurviveContext * ctx;
 
-	//XXX TODO: UN-STATICIFY THIS.
 	SurviveUSBInterface uiface[MAX_INTERFACES];
-	//USB Subsystem
-	struct libusb_context* usbctx;
-	struct libusb_device_handle * udev[MAX_USB_DEVS];
 
+	USBHANDLE udev[MAX_USB_DEVS];
+#ifdef HIDAPI
+	og_thread_t servicethread[MAX_USB_DEVS];
+#else
+	struct libusb_context* usbctx;
+#endif
 };
 
+#ifdef HIDAPI
+og_mutex_t      GlobalRXUSBMutx;
+#endif
+
 void survive_data_cb( SurviveUSBInterface * si );
 
 //USB Subsystem 
@@ -95,7 +119,25 @@ int survive_usb_poll( SurviveContext * ctx );
 int survive_get_config( char ** config, SurviveViveData * ctx, int devno, int interface, int send_extra_magic );
 int survive_vive_send_magic(struct SurviveContext * ctx, void * drv, int magic_code, void * data, int datalen );
 
+#ifdef HIDAPI
+void * HAPIReceiver( void * v )
+{
+	char buf[65];
+	int res;
+	SurviveUSBInterface * iface = v;
+	USBHANDLE * hp = &iface->sv->udev[iface->which_interface_am_i];
+	while( iface->actual_len = hid_read( *hp, iface->buffer, sizeof( iface->buffer ) ) > 0 )
+	{
+		OGLockMutex( GlobalRXUSBMutx );
+		survive_data_cb( iface );
+		OGUnlockMutex( GlobalRXUSBMutx );
+	}
+	//XXX TODO: Mark device as failed.
+	*hp = 0;
+	return 0;
+}
 
+#else
 static void handle_transfer(struct libusb_transfer* transfer)
 {
 	struct SurviveUSBInterface * iface = transfer->user_data;
@@ -117,10 +159,10 @@ static void handle_transfer(struct libusb_transfer* transfer)
 		SV_KILL();
 	}
 }
+#endif
 
 
-
-static int AttachInterface( SurviveViveData * sv, SurviveObject * assocobj, int which_interface_am_i, libusb_device_handle * devh, int endpoint, usb_callback cb, const char * hname )
+static int AttachInterface( SurviveViveData * sv, SurviveObject * assocobj, int which_interface_am_i, USBHANDLE devh, int endpoint, usb_callback cb, const char * hname )
 {
 	SurviveContext * ctx = sv->ctx;
 	SurviveUSBInterface * iface = &sv->uiface[which_interface_am_i];
@@ -129,8 +171,13 @@ static int AttachInterface( SurviveViveData * sv, SurviveObject * assocobj, int
 	iface->which_interface_am_i = which_interface_am_i;
 	iface->assoc_obj = assocobj;
 	iface->hname = hname;
-	struct libusb_transfer * tx = iface->transfer = libusb_alloc_transfer(0);
 	iface->cb = cb;
+
+#ifdef HIDAPI
+	//What do here?
+	sv->servicethread[which_interface_am_i] = OGCreateThread( HAPIReceiver, iface );
+#else
+	struct libusb_transfer * tx = iface->transfer = libusb_alloc_transfer(0);
 	//printf( "%p %d %p %p\n", iface, which_interface_am_i, tx, devh );
 
 	if (!iface->transfer)
@@ -147,7 +194,7 @@ static int AttachInterface( SurviveViveData * sv, SurviveObject * assocobj, int
 		SV_ERROR( "Error: Could not submit transfer for %s (Code %d)", hname, rc );
 		return 6;
 	}
-
+#endif
 	return 0;
 }
 
@@ -166,6 +213,31 @@ static void debug_cb( struct SurviveUSBInterface * si )
 
 //XXX TODO: Redo this subsystem for setting/updating feature reports.
 
+
+#ifdef HIDAPI
+static inline int update_feature_report(USBHANDLE dev, uint16_t interface, uint8_t * data, int datalen )
+{
+	uint8_t rrb[65];
+	if( datalen > 64 ) datalen = 64;
+	memcpy( rrb+1, data, datalen );
+	rrb[0] = interface;
+	int r = hid_send_feature_report( dev, rrb, datalen+1 );
+	printf( "HUR: (%p) %d (%d) [%d]\n", dev, r, datalen, rrb[0] );
+	return r;
+}
+static inline int getupdate_feature_report(USBHANDLE dev, uint16_t interface, uint8_t * data, int datalen ) 
+{
+	uint8_t rrb[65];
+	if( datalen > 64 ) datalen = 64;
+	rrb[0] = interface;
+	int r = hid_get_feature_report( dev, rrb, datalen+1 );
+	printf( "HGR: (%p) %d (%d) (%d)\n", dev, r, datalen, rrb[0] );
+	memcpy( data, rrb+1, datalen );
+	return r;
+}
+
+#else
+	
 static inline int update_feature_report(libusb_device_handle* dev, uint16_t interface, uint8_t * data, int datalen ) {
 //	int xfer;
 //	int r = libusb_interrupt_transfer(dev, 0x01, data, datalen, &xfer, 1000);
@@ -186,9 +258,9 @@ static inline int getupdate_feature_report(libusb_device_handle* dev, uint16_t i
 	return ret;
 }
 
+#endif
 
-
-static inline int hid_get_feature_report_timeout(libusb_device_handle* device, uint16_t interface, unsigned char *buf, size_t len )
+static inline int hid_get_feature_report_timeout(USBHANDLE device, uint16_t interface, unsigned char *buf, size_t len )
 {
 	int ret;
 	uint8_t i = 0;
@@ -196,16 +268,74 @@ static inline int hid_get_feature_report_timeout(libusb_device_handle* device, u
 	{
         ret = getupdate_feature_report(device, interface, buf, len);
 		if( ret != -9 && ( ret != -1 || errno != EPIPE ) ) return ret;
-		usleep( 1000 );
+		OGUSleep( 1000 );
 	}
 
 	return -1;
 }
 
-
 int survive_usb_init( struct SurviveViveData * sv, struct SurviveObject * hmd, struct SurviveObject *wm0, struct SurviveObject * wm1, struct SurviveObject * tr0 )
 {
 	struct SurviveContext * ctx = sv->ctx;
+#ifdef HIDAPI
+	int res, i;
+	res = hid_init();
+	if( res )
+	{
+		SV_ERROR( "Could not setup hidapi." );
+		return res;
+	}
+	
+	for( i = 0; i < MAX_USB_DEVS; i++ )
+	{
+		int enumid = vidpids[i*3+2];
+		int vendor_id = vidpids[i*3+0];
+		int product_id = vidpids[i*3+1];
+		struct hid_device_info * devs = hid_enumerate(vendor_id, product_id);
+		struct hid_device_info * cur_dev = devs;
+		const char *path_to_open = NULL;
+		hid_device *handle = NULL;
+		int menum = 0;
+		
+		cur_dev = devs;
+		while (cur_dev) {
+			if (cur_dev->vendor_id == vendor_id &&
+				cur_dev->product_id == product_id)
+			{
+				if( menum == enumid )
+				{
+					path_to_open = cur_dev->path;
+					break;
+				}
+				menum++;
+			}
+			cur_dev = cur_dev->next;
+		}
+
+		if (path_to_open) {
+			handle = hid_open_path(path_to_open);
+		}
+
+		hid_free_enumeration(devs);
+
+		if( !handle )
+		{
+			SV_INFO( "Warning: Could not find vive device %04x:%04x\n", vendor_id, product_id );
+			continue;
+		}
+	
+		// Read the Serial Number String
+		wchar_t wstr[255];
+
+		res = hid_get_serial_number_string(handle, wstr, 255);
+		wprintf(L"Serial Number String: (%d) %s for %04x:%04x\n", wstr[0], wstr,vendor_id, product_id);
+		
+		sv->udev[i] = handle;
+
+	}
+
+	
+#else
 	int r = libusb_init( &sv->usbctx );
 	if( r )
 	{
@@ -294,7 +424,10 @@ int survive_usb_init( struct SurviveViveData * sv, struct SurviveObject * hmd, s
 
 		SV_INFO( "Successfully enumerated %s (%d, %d)", devnames[i], did, conf->bNumInterfaces );
 	}
+	
 	libusb_free_device_list( devs, 1 );
+#endif
+
 
 	if( sv->udev[USB_DEV_HMD] && AttachInterface( sv, hmd, USB_IF_HMD,        sv->udev[USB_DEV_HMD],        0x81, survive_data_cb, "Mainboard" ) ) { return -6; }
 	if( sv->udev[USB_DEV_LIGHTHOUSE] && AttachInterface( sv, hmd, USB_IF_LIGHTHOUSE, sv->udev[USB_DEV_LIGHTHOUSE], 0x81, survive_data_cb, "Lighthouse" ) ) { return -7; }
@@ -362,7 +495,7 @@ int survive_vive_send_magic(struct SurviveContext * ctx, void * drv, int magic_c
 			r = update_feature_report( sv->udev[USB_DEV_WATCHMAN1], 0, vive_controller_haptic_pulse, sizeof( vive_controller_haptic_pulse ) );
 			SV_INFO( "UCR: %d", r );
 			if( r != sizeof( vive_controller_haptic_pulse ) ) return 5;
-			usleep( 1000 );
+			OGUSleep( 1000 );
 		}
 #endif
 		SV_INFO( "Powered unit on." );
@@ -403,15 +536,35 @@ int survive_vive_send_magic(struct SurviveContext * ctx, void * drv, int magic_c
 void survive_vive_usb_close( struct SurviveViveData * sv )
 {
 	int i;
+#ifdef HIDAPI
+	for( i = 0; i < MAX_USB_DEVS; i++ )
+	{
+		if( sv->udev[i] )
+			hid_close( sv->udev[i] );
+	}
+	for( i = 0; i < MAX_USB_DEVS; i++ )
+	{
+		OGJoinThread( sv->servicethread[i] );
+	}
+	//This is global, don't do it on account of other tasks.
+	//hid_exit();
+
+#else
 	for( i = 0; i < MAX_USB_DEVS; i++ )
 	{
 	    libusb_close( sv->udev[i] );
 	}
     libusb_exit(sv->usbctx);	
+#endif
 }
 
 int survive_vive_usb_poll( struct SurviveContext * ctx, void * v )
 {
+#ifdef HIDAPI
+	OGUnlockMutex( GlobalRXUSBMutx );
+	OGUSleep( 100 );
+	OGUnlockMutex( GlobalRXUSBMutx );
+#else
 	struct SurviveViveData * sv = v;
 	int r = libusb_handle_events( sv->usbctx );
 	if( r )
@@ -420,6 +573,7 @@ int survive_vive_usb_poll( struct SurviveContext * ctx, void * v )
 		SV_ERROR( "Libusb poll failed." );
 	}
 	return r;
+#endif
 }
 
 
@@ -430,7 +584,7 @@ int survive_get_config( char ** config, struct SurviveViveData * sv, int devno,
 	uint8_t cfgbuff[64];
 	uint8_t compressed_data[8192];
 	uint8_t uncompressed_data[65536];
-	struct libusb_device_handle * dev = sv->udev[devno];
+	USBHANDLE dev = sv->udev[devno];
 
 	if( send_extra_magic )
 	{
@@ -439,10 +593,14 @@ int survive_get_config( char ** config, struct SurviveViveData * sv, int devno,
 		memset( cfgbuffwide, 0, sizeof( cfgbuff ) );
 		cfgbuffwide[0] = 0x01;
 		ret = hid_get_feature_report_timeout( dev, iface, cfgbuffwide, sizeof( cfgbuffwide ) );
-		usleep(1000);
+		OGUSleep(1000);
 
 		int k;
 
+		#ifdef HIDAPI
+		//XXX TODO WRITEME
+		SV_INFO( "XXX TODO WRITEME" );
+		#else
 		//Switch mode to pull config?
 		for( k = 0; k < 10; k++ )
 		{
@@ -459,12 +617,13 @@ int survive_get_config( char ** config, struct SurviveViveData * sv, int devno,
 
 			int rk = libusb_control_transfer(dev, LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_OUT,
 			0x09, 0x300 | cfgbuff_send[0], iface, cfgbuff_send, 64, 1000 );
-			usleep(1000);
+			OGUSleep(1000);
 		}
+		#endif
 
 		cfgbuffwide[0] = 0xff;
 		ret = hid_get_feature_report_timeout( dev, iface, cfgbuffwide, sizeof( cfgbuffwide ) );
-		usleep(1000);
+		OGUSleep(1000);
 	}
 
 	memset( cfgbuff, 0, sizeof( cfgbuff ) );
@@ -1022,8 +1181,11 @@ static int LoadConfig( SurviveViveData * sv, SurviveObject * so, int devno, int
 	}
 
 	char fname[20];
+#ifdef WINDOWS
+	mkdir( "calinfo" );
+#else
 	mkdir( "calinfo", 0755 );
-
+#endif
 	sprintf( fname, "calinfo/%s_points.csv", so->codename );
 	FILE * f = fopen( fname, "w" );
 	int j;
diff --git a/windows/build_tcc.bat b/windows/build_tcc.bat
index 34ee3a5..753ba7c 100644
--- a/windows/build_tcc.bat
+++ b/windows/build_tcc.bat
@@ -5,12 +5,10 @@ echo Be sure to have TinyCC installed to %TCC% (or change the TCC parameter.)
 
 set SR=..\src\
 set RD=..\redist\
-set SOURCES=%SR%ootx_decoder.c %SR%poser_charlesslow.c %SR%poser_daveortho.c %SR%poser_dummy.c %SR%survive.c %SR%survive_cal.c %SR%survive_config.c %SR%survive_data.c %SR%survive_driverman.c %SR%survive_process.c %SR%survive_usb.c
-set REDIST=%RD%crc32.c %RD%linmath.c %RD%puff.c %RD%jsmn.c %rd%json_helpers.c
+set SOURCES=%SR%ootx_decoder.c %SR%poser_charlesslow.c %SR%poser_daveortho.c %SR%poser_dummy.c %SR%survive.c %SR%survive_cal.c %SR%survive_config.c %SR%survive_data.c %SR%survive_driverman.c %SR%survive_process.c %SR%survive_vive.c
+set REDIST=%RD%crc32.c %RD%linmath.c %RD%puff.c %RD%jsmn.c %RD%json_helpers.c  %RD%symbol_enumerator.c
 set EXEC=..\calibrate.c %RD%WinDriver.c %RD%os_generic.c %RD%DrawFunctions.c
-set CFLAGS=-DNOZLIB -DTCC -DWINDOWS -DHIDAPI -O0 -DWIN32 -g -rdynamic -I..\redist -I..\include\libsurvive -I..\src
-set LDFLAGS=-lkernel32 -lgdi32 -luser32
+set CFLAGS=-DNOZLIB -DTCC -DWINDOWS -DHIDAPI -DWIN32 -DRUNTIME_SYMNUM -O0 -g -rdynamic -I..\redist -I..\include\libsurvive -I..\src -I.
+set LDFLAGS=-lkernel32 -lgdi32 -luser32 -lsetupapi -ldbghelp
 @echo on
-%TCC% -v %CFLAGS% %SOURCES% %REDIST% %EXEC% %LDFLAGS% tcc_stubs.c -o calibrate.exe
-
-rem %SR%survive_vive.c
\ No newline at end of file
+%TCC% -v %CFLAGS% %SOURCES% %REDIST% %EXEC% %LDFLAGS% tcc_stubs.c hid.c -o calibrate.exe
diff --git a/windows/hid.c b/windows/hid.c
new file mode 100644
index 0000000..8f80071
--- /dev/null
+++ b/windows/hid.c
@@ -0,0 +1,996 @@
+/*******************************************************
+ 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, 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, 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 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, length);
+	if (!res) {
+		register_error(dev, "HidD_SetFeature");
+		return -1;
+	}
+
+	return 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, length,
+		data, 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, 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, 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, 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, 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
diff --git a/windows/hidapi.h b/windows/hidapi.h
new file mode 100644
index 0000000..43b8e7a
--- /dev/null
+++ b/windows/hidapi.h
@@ -0,0 +1,405 @@
+/*******************************************************
+ 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.
+*/
+
+
+/** @file
+ * @defgroup API hidapi API
+ */
+
+#ifndef HIDAPI_H__
+#define HIDAPI_H__
+
+#include <wchar.h>
+
+#ifdef _WIN32
+      #define HID_API_EXPORT __declspec(dllexport)
+      #define HID_API_CALL
+#else
+      #define HID_API_EXPORT /**< API export macro */
+      #define HID_API_CALL /**< API call macro */
+#endif
+
+#define HID_API_EXPORT_CALL HID_API_EXPORT HID_API_CALL /**< API export and call macro*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+		struct hid_device_;
+		typedef struct hid_device_ hid_device; /**< opaque hidapi structure */
+
+		/** hidapi info structure */
+		struct hid_device_info {
+			/** Platform-specific device path */
+			char *path;
+			/** Device Vendor ID */
+			unsigned short vendor_id;
+			/** Device Product ID */
+			unsigned short product_id;
+			/** Serial Number */
+			wchar_t *serial_number;
+			/** Device Release Number in binary-coded decimal,
+			    also known as Device Version Number */
+			unsigned short release_number;
+			/** Manufacturer String */
+			wchar_t *manufacturer_string;
+			/** Product string */
+			wchar_t *product_string;
+			/** Usage Page for this Device/Interface
+			    (Windows/Mac only). */
+			unsigned short usage_page;
+			/** Usage for this Device/Interface
+			    (Windows/Mac only).*/
+			unsigned short usage;
+			/** The USB interface which this logical device
+			    represents. Valid on both Linux implementations
+			    in all cases, and valid on the Windows implementation
+			    only if the device contains more than one interface. */
+			int interface_number;
+
+			/** Pointer to the next device */
+			struct hid_device_info *next;
+		};
+
+
+		/** @brief Initialize the HIDAPI library.
+
+			This function initializes the HIDAPI library. Calling it is not
+			strictly necessary, as it will be called automatically by
+			hid_enumerate() and any of the hid_open_*() functions if it is
+			needed.  This function should be called at the beginning of
+			execution however, if there is a chance of HIDAPI handles
+			being opened by different threads simultaneously.
+			
+			@ingroup API
+
+			@returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int HID_API_EXPORT HID_API_CALL hid_init(void);
+
+		/** @brief Finalize the HIDAPI library.
+
+			This function frees all of the static data associated with
+			HIDAPI. It should be called at the end of execution to avoid
+			memory leaks.
+
+			@ingroup API
+
+		    @returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int HID_API_EXPORT HID_API_CALL hid_exit(void);
+
+		/** @brief Enumerate the HID Devices.
+
+			This function returns a linked list of all the HID devices
+			attached to the system which match vendor_id and product_id.
+			If @p vendor_id is set to 0 then any vendor matches.
+			If @p product_id is set to 0 then any product matches.
+			If @p vendor_id and @p product_id are both set to 0, then
+			all HID devices will be returned.
+
+			@ingroup API
+			@param vendor_id The Vendor ID (VID) of the types of device
+				to open.
+			@param product_id The Product ID (PID) of the types of
+				device to open.
+
+		    @returns
+		    	This function returns a pointer to a linked list of type
+		    	struct #hid_device, containing information about the HID devices
+		    	attached to the system, or NULL in the case of failure. Free
+		    	this linked list by calling hid_free_enumeration().
+		*/
+		struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id);
+
+		/** @brief Free an enumeration Linked List
+
+		    This function frees a linked list created by hid_enumerate().
+
+			@ingroup API
+		    @param devs Pointer to a list of struct_device returned from
+		    	      hid_enumerate().
+		*/
+		void  HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs);
+
+		/** @brief Open a HID device using a Vendor ID (VID), Product ID
+			(PID) and optionally a serial number.
+
+			If @p serial_number is NULL, the first device with the
+			specified VID and PID is opened.
+
+			@ingroup API
+			@param vendor_id The Vendor ID (VID) of the device to open.
+			@param product_id The Product ID (PID) of the device to open.
+			@param serial_number The Serial Number of the device to open
+				               (Optionally NULL).
+
+			@returns
+				This function returns a pointer to a #hid_device object on
+				success or NULL on failure.
+		*/
+		HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number);
+
+		/** @brief Open a HID device by its path name.
+
+			The path name be determined by calling hid_enumerate(), or a
+			platform-specific path name can be used (eg: /dev/hidraw0 on
+			Linux).
+
+			@ingroup API
+		    @param path The path name of the device to open
+
+			@returns
+				This function returns a pointer to a #hid_device object on
+				success or NULL on failure.
+		*/
+		HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path);
+
+		/** @brief Write an Output report to a HID device.
+
+			The first byte of @p data[] must contain the Report ID. For
+			devices which only support a single report, this must be set
+			to 0x0. The remaining bytes contain the report data. Since
+			the Report ID is mandatory, calls to hid_write() will always
+			contain one more byte than the report contains. For example,
+			if a hid report is 16 bytes long, 17 bytes must be passed to
+			hid_write(), the Report ID (or 0x0, for devices with a
+			single report), followed by the report data (16 bytes). In
+			this example, the length passed in would be 17.
+
+			hid_write() will send the data on the first OUT endpoint, if
+			one exists. If it does not, it will send the data through
+			the Control Endpoint (Endpoint 0).
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param data The data to send, including the report number as
+				the first byte.
+			@param length The length in bytes of the data to send.
+
+			@returns
+				This function returns the actual number of bytes written and
+				-1 on error.
+		*/
+		int  HID_API_EXPORT HID_API_CALL hid_write(hid_device *device, const unsigned char *data, size_t length);
+
+		/** @brief Read an Input report from a HID device with timeout.
+
+			Input reports are returned
+			to the host through the INTERRUPT IN endpoint. The first byte will
+			contain the Report number if the device uses numbered reports.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param data A buffer to put the read data into.
+			@param length The number of bytes to read. For devices with
+				multiple reports, make sure to read an extra byte for
+				the report number.
+			@param milliseconds timeout in milliseconds or -1 for blocking wait.
+
+			@returns
+				This function returns the actual number of bytes read and
+				-1 on error. If no packet was available to be read within
+				the timeout period, this function returns 0.
+		*/
+		int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds);
+
+		/** @brief Read an Input report from a HID device.
+
+			Input reports are returned
+		    to the host through the INTERRUPT IN endpoint. The first byte will
+			contain the Report number if the device uses numbered reports.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param data A buffer to put the read data into.
+			@param length The number of bytes to read. For devices with
+				multiple reports, make sure to read an extra byte for
+				the report number.
+
+			@returns
+				This function returns the actual number of bytes read and
+				-1 on error. If no packet was available to be read and
+				the handle is in non-blocking mode, this function returns 0.
+		*/
+		int  HID_API_EXPORT HID_API_CALL hid_read(hid_device *device, unsigned char *data, size_t length);
+
+		/** @brief Set the device handle to be non-blocking.
+
+			In non-blocking mode calls to hid_read() will return
+			immediately with a value of 0 if there is no data to be
+			read. In blocking mode, hid_read() will wait (block) until
+			there is data to read before returning.
+
+			Nonblocking can be turned on and off at any time.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param nonblock enable or not the nonblocking reads
+			 - 1 to enable nonblocking
+			 - 0 to disable nonblocking.
+
+			@returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int  HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *device, int nonblock);
+
+		/** @brief Send a Feature report to the device.
+
+			Feature reports are sent over the Control endpoint as a
+			Set_Report transfer.  The first byte of @p data[] must
+			contain the Report ID. For devices which only support a
+			single report, this must be set to 0x0. The remaining bytes
+			contain the report data. Since the Report ID is mandatory,
+			calls to hid_send_feature_report() will always contain one
+			more byte than the report contains. For example, if a hid
+			report is 16 bytes long, 17 bytes must be passed to
+			hid_send_feature_report(): the Report ID (or 0x0, for
+			devices which do not use numbered reports), followed by the
+			report data (16 bytes). In this example, the length passed
+			in would be 17.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param data The data to send, including the report number as
+				the first byte.
+			@param length The length in bytes of the data to send, including
+				the report number.
+
+			@returns
+				This function returns the actual number of bytes written and
+				-1 on error.
+		*/
+		int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *device, const unsigned char *data, size_t length);
+
+		/** @brief Get a feature report from a HID device.
+
+			Set the first byte of @p data[] to the Report ID of the
+			report to be read.  Make sure to allow space for this
+			extra byte in @p data[]. Upon return, the first byte will
+			still contain the Report ID, and the report data will
+			start in data[1].
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param data A buffer to put the read data into, including
+				the Report ID. Set the first byte of @p data[] to the
+				Report ID of the report to be read, or set it to zero
+				if your device does not use numbered reports.
+			@param length The number of bytes to read, including an
+				extra byte for the report ID. The buffer can be longer
+				than the actual report.
+
+			@returns
+				This function returns the number of bytes read plus
+				one for the report ID (which is still in the first
+				byte), or -1 on error.
+		*/
+		int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *device, unsigned char *data, size_t length);
+
+		/** @brief Close a HID device.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+		*/
+		void HID_API_EXPORT HID_API_CALL hid_close(hid_device *device);
+
+		/** @brief Get The Manufacturer String from a HID device.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param string A wide string buffer to put the data into.
+			@param maxlen The length of the buffer in multiples of wchar_t.
+
+			@returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *device, wchar_t *string, size_t maxlen);
+
+		/** @brief Get The Product String from a HID device.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param string A wide string buffer to put the data into.
+			@param maxlen The length of the buffer in multiples of wchar_t.
+
+			@returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int HID_API_EXPORT_CALL hid_get_product_string(hid_device *device, wchar_t *string, size_t maxlen);
+
+		/** @brief Get The Serial Number String from a HID device.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param string A wide string buffer to put the data into.
+			@param maxlen The length of the buffer in multiples of wchar_t.
+
+			@returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *device, wchar_t *string, size_t maxlen);
+
+		/** @brief Get a string from a HID device, based on its string index.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+			@param string_index The index of the string to get.
+			@param string A wide string buffer to put the data into.
+			@param maxlen The length of the buffer in multiples of wchar_t.
+
+			@returns
+				This function returns 0 on success and -1 on error.
+		*/
+		int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *device, int string_index, wchar_t *string, size_t maxlen);
+
+		/** @brief Get a string describing the last error which occurred.
+
+			@ingroup API
+			@param device A device handle returned from hid_open().
+
+			@returns
+				This function returns a string containing the last error
+				which occurred or NULL if none has occurred.
+		*/
+		HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *device);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/windows/tcc_stubs.c b/windows/tcc_stubs.c
index 58cc8ed..7872914 100644
--- a/windows/tcc_stubs.c
+++ b/windows/tcc_stubs.c
@@ -44,7 +44,7 @@ int vasprintf(char **strp, const char *fmt, va_list ap) {
         return -1;
     }
     size_t size = (size_t)len + 1;
-    char *str = malloc(size);
+    char *str = (char*)malloc(size);
     if (!str) {
         return -1;
     }