usb: add macosx structs

contrib/usb/load.factor

@@ -6,6 +6,7 @@ PROVIDE: contrib/usb {
 	"usb-common.factor" 
 	{ "usb-unix.factor" [ unix? ] }
 	{ "usb-win32.factor" [ win32? ] }
+	{ "usb-macosx.factor" [ macosx? ] }
 	"usb.factor" 
 } { 
 } ;

contrib/usb/usb-macosx.factor

@@ -0,0 +1,66 @@
+! Copyright (C) 2006 Chris Double.
+! See http://factorcode.org/license.txt for BSD license.
+!
+IN: usb
+USING: kernel alien ;
+
+"usb" "libusb.dll" "cdecl" add-library
+
+LIBRARY: usb
+
+BEGIN-STRUCT: usb_bus
+  FIELD: void*      next
+  FIELD: void*      prev	
+  FIELD: char[1025] dirname
+  FIELD: void*      devices
+  FIELD: uint       location
+  FIELD: void*      root_dev
+END-STRUCT
+
+! __attribute__ ((packed))
+BEGIN-STRUCT: usb_device_descriptor
+  PACKED-FIELD: uchar bLength
+  PACKED-FIELD: uchar bDescriptorType
+  PACKED-FIELD: ushort bcdUSB
+  PACKED-FIELD: uchar  bDeviceClass
+  PACKED-FIELD: uchar  bDeviceSubClass
+  PACKED-FIELD: uchar  bDeviceProtocol
+  PACKED-FIELD: uchar  bMaxPacketSize0
+  PACKED-FIELD: ushort idVendor
+  PACKED-FIELD: ushort idProduct
+  PACKED-FIELD: ushort bcdDevice;
+  PACKED-FIELD: uchar  iManufacturer
+  PACKED-FIELD: uchar  iProduct
+  PACKED-FIELD: uchar  iSerialNumber
+  PACKED-FIELD: uchar  bNumConfigurations
+END-STRUCT
+
+BEGIN-STRUCT: usb_config_descriptor
+  PACKED-FIELD: uchar  bLength ! __attribute__ ((packed))
+  PACKED-FIELD: uchar  bDescriptorType ! __attribute__ ((packed))
+  PACKED-FIELD: ushort wTotalLength ! __attribute__ ((packed))
+  PACKED-FIELD: uchar  bNumInterfaces !  __attribute__ ((packed))
+  PACKED-FIELD: uchar  bConfigurationValue ! __attribute__ ((packed))
+  PACKED-FIELD: uchar  iConfiguration ! __attribute__ ((packed))
+  PACKED-FIELD: uchar  bmAttributes ! __attribute__ ((packed))
+  PACKED-FIELD: uchar  MaxPower ! __attribute__ ((packed))
+
+  FIELD: void*  interface
+
+  FIELD: uchar* extra
+  FIELD: int extralen
+END-STRUCT
+
+BEGIN-STRUCT: usb_device
+  FIELD: void* next
+  FIELD: void* prev
+  FIELD: char[1025] filename
+  FIELD: usb_bus* bus
+  FIELD: usb_device_descriptor descriptor
+  FIELD: usb_config_descriptor* config
+  FIELD: void* dev
+  FIELD: uchar devnum
+  FIELD: uchar num_children
+  FIELD: void* children
+END-STRUCT
+