Add support for Visual Studio 2019

external/libusb/src/usbi.h

@@ -0,0 +1,75 @@
+#ifndef _USBI_H_
+#define _USBI_H_
+
+#include <stdint.h>
+#include "lusb0_usb.h"
+#include "error.h"
+
+extern int usb_debug;
+
+/* Some quick and generic macros for the simple kind of lists we use */
+#define LIST_ADD(begin, ent) \
+	do { \
+	  if (begin) { \
+	    ent->next = begin; \
+	    ent->next->prev = ent; \
+	  } else \
+	    ent->next = NULL; \
+	  ent->prev = NULL; \
+	  begin = ent; \
+	} while(0)
+
+#define LIST_DEL(begin, ent) \
+	do { \
+	  if (ent->prev) \
+	    ent->prev->next = ent->next; \
+	  else \
+	    begin = ent->next; \
+	  if (ent->next) \
+	    ent->next->prev = ent->prev; \
+	  ent->prev = NULL; \
+	  ent->next = NULL; \
+	} while (0)
+
+#define DESC_HEADER_LENGTH		2
+#define DEVICE_DESC_LENGTH		18
+#define CONFIG_DESC_LENGTH		9
+#define INTERFACE_DESC_LENGTH		9
+#define ENDPOINT_DESC_LENGTH		7
+#define ENDPOINT_AUDIO_DESC_LENGTH	9
+
+struct usb_dev_handle
+{
+    int fd;
+
+    struct usb_bus *bus;
+    struct usb_device *device;
+
+    int config;
+    int interface;
+    int altsetting;
+
+    /* Added by RMT so implementations can store other per-open-device data */
+    void *impl_info;
+};
+
+/* descriptors.c */
+int usb_parse_descriptor(unsigned char *source, char *description, void *dest);
+int usb_parse_configuration(struct usb_config_descriptor *config,
+                            unsigned char *buffer);
+void usb_fetch_and_parse_descriptors(usb_dev_handle *udev);
+void usb_destroy_configuration(struct usb_device *dev);
+
+/* OS specific routines */
+int usb_os_find_busses(struct usb_bus **busses);
+int usb_os_find_devices(struct usb_bus *bus, struct usb_device **devices);
+int usb_os_determine_children(struct usb_bus *bus);
+void usb_os_init(void);
+int usb_os_open(usb_dev_handle *dev);
+int usb_os_close(usb_dev_handle *dev);
+
+void usb_free_dev(struct usb_device *dev);
+void usb_free_bus(struct usb_bus *bus);
+
+#endif /* _USBI_H_ */
+