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OS dependent wrappers for various USB related kernel interfaces. Each operating system will have it's private udi.c file which implements the services defined here.
This file is part of Open Sound System.
Copyright (C) 4Front Technologies 1996-2008.
This this source file is released under GPL v2 license (no other versions). See the COPYING file included in the main directory of this source distribution for the license terms and conditions.
/* typedef struct udi_usb_devc udi_usb_devc; // Moved to os.h */
typedef struct
{
char *altsetting_labels;
int default_altsetting;
unsigned int altsetting_mask;
} ossusb_altsetting_def_t;
#define MAX_ALTSETTINGS 20
typedef struct udi_usb_devinfo
{
int vendor, product;
char *name;
const ossusb_altsetting_def_t altsettings[MAX_ALTSETTINGS];
}
udi_usb_devinfo;
typedef struct
{
void *(*attach) (udi_usb_devc * devc, oss_device_t * osdev);
void (*disconnect) (void *devc);
} udi_usb_driver;
extern int udi_attach_usbdriver (oss_device_t * osdev,
const udi_usb_devinfo * devlist,
udi_usb_driver * driver);
extern void udi_unload_usbdriver (oss_device_t * osdev);
extern int udi_usb_trace;
extern int udi_usbdev_get_class (udi_usb_devc * usbdev);
extern int udi_usbdev_get_subclass (udi_usb_devc * usbdev);
extern int udi_usbdev_get_vendor (udi_usb_devc * usbdev);
extern int udi_usbdev_get_product (udi_usb_devc * usbdev);
extern int udi_usbdev_get_inum (udi_usb_devc * usbdev);
extern unsigned char *udi_usbdev_get_endpoint (udi_usb_devc * usbdev,
int altsetting, int n,
int *len);
#define EP_IN 0
#define EP_OUT 1
extern char *udi_usbdev_get_name (udi_usb_devc * usbdev);
extern char *udi_usbdev_get_altsetting_labels (udi_usb_devc * usbdev, int if_num, int *default_alt, unsigned int *mask);
extern char *udi_usbdev_get_string (udi_usb_devc * usbdev, int ix);
extern char *udi_usbdev_get_devpath (udi_usb_devc * usbdev);
extern int udi_usbdev_get_num_altsettings (udi_usb_devc * usbdev);
extern unsigned char *udi_usbdev_get_altsetting (udi_usb_devc * usbdev, int n,
int *size);
extern int udi_usbdev_set_interface (udi_usb_devc * usbdev, int inum,
int altset);
extern int udi_usb_snd_control_msg (udi_usb_devc * usbdev,
unsigned int endpoint, unsigned char rq,
unsigned char rqtype,
unsigned short value,
unsigned short index, void *buf, int len,
int timeout);
extern int udi_usb_rcv_control_msg (udi_usb_devc * usbdev,
unsigned int endpoint, unsigned char rq,
unsigned char rqtype,
unsigned short value,
unsigned short index, void *buf, int len,
int timeout);
typedef struct udi_usb_request udi_usb_request_t; /* Opaque type */
typedef struct _udi_endpoint_handle_t udi_endpoint_handle_t;
extern udi_endpoint_handle_t *udi_open_endpoint (udi_usb_devc * usbdev,
void *ep_descr);
extern void udi_close_endpoint (udi_endpoint_handle_t * eph);
extern int udi_endpoint_get_num (udi_endpoint_handle_t * eph);
#define UDI_USBXFER_ISO_WRITE 1
#define UDI_USBXFER_ISO_READ 2
#define UDI_USBXFER_BULK_READ 3
#define UDI_USBXFER_BULK_WRITE 4
#define UDI_USBXFER_INTR_READ 5
typedef void (*udi_usb_complete_func_t) (udi_usb_request_t * request,
void *arg);
extern udi_usb_request_t *udi_usb_alloc_request (udi_usb_devc * usbdev,
udi_endpoint_handle_t * eph,
int nframes, int xfer_type);
extern void udi_usb_free_request (udi_usb_request_t * request);
extern int udi_usb_submit_request (udi_usb_request_t * request,
udi_usb_complete_func_t callback,
void *callback_arg,
udi_endpoint_handle_t * eph, int xfer_type,
void *data, int data_len);
extern void udi_usb_cancel_request (udi_usb_request_t * request);
extern int udi_usb_request_actlen (udi_usb_request_t * request);
extern unsigned char *udi_usb_request_actdata (udi_usb_request_t * request);