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/* printer-io.h
*
* (c) 2014, 2015, 2018, 2022 Markus Heinz
*
* This software is licensed under the terms of the GPL.
* For details see file COPYING.
*/
#ifndef PRINTER_IO_H
#define PRINTER_IO_H
#include "config.h"
#include <libusb.h>
#include "libusb-utils.h"
#include <stddef.h>
#include <stdint.h>
/* Return codes */
#define PRINTER_SUCCESS 1
#define PRINTER_FAILURE 0
/* Parameter for mode in printer_descriptor */
#define PRINTER_MODE_LIBUSB 1
#define PRINTER_MODE_DEVICE 2
typedef struct printer_descriptor {
// Defining the connection
int port; // Type of port
const char *device_file; // Name of device node
int portnumber; // instance number of printer port
int mode; // PRINTER_MODE_LIBUSB or PRINTER_MODE_DEVICE
// Storing the connection
int fd; // File descriptor
usb_printer *printer; // USB printer descriptor
} printer_descriptor;
int open_wrapper(struct printer_descriptor *desc);
int close_wrapper(struct printer_descriptor *desc);
int read_wrapper(struct printer_descriptor *desc, char *buffer, size_t bufsize,
int *transfered, int nonblocking);
int write_wrapper(struct printer_descriptor *desc, char *buffer,
size_t bufsize, int *transfered);
#endif
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