/*
* libusb example program to manipulate U.are.U 4000B fingerprint scanner.
- * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
+ * Copyright © 2007 Daniel Drake <dsd@gentoo.org>
*
* Basic image capture program only, does not consider the powerup quirks or
* the fact that image encryption may be enabled. Not expected to work
#include <stdio.h>
#include <stdlib.h>
-#include <libusb/libusb.h>
+#include "libusb.h"
#define EP_INTR (1 | LIBUSB_ENDPOINT_IN)
#define EP_DATA (2 | LIBUSB_ENDPOINT_IN)
static int find_dpfp_device(void)
{
- devh = libusb_open_device_with_vid_pid(0x05ba, 0x000a);
+ devh = libusb_open_device_with_vid_pid(NULL, 0x05ba, 0x000a);
return devh ? 0 : -EIO;
}
return 0;
}
-static void cb_mode_changed(struct libusb_transfer *transfer)
+static void LIBUSB_CALL cb_mode_changed(struct libusb_transfer *transfer)
{
if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
fprintf(stderr, "mode change transfer not completed!\n");
static int set_mode_async(unsigned char data)
{
- unsigned char *buf = malloc(LIBUSB_CONTROL_SETUP_SIZE + 1);
+ unsigned char *buf = (unsigned char*) malloc(LIBUSB_CONTROL_SETUP_SIZE + 1);
struct libusb_transfer *transfer;
if (!buf)
return -ENOMEM;
-
+
transfer = libusb_alloc_transfer(0);
if (!transfer) {
free(buf);
}
static int sync_intr(unsigned char type)
-{
+{
int r;
unsigned char data[INTR_LENGTH];
FILE *fd;
char filename[64];
- sprintf(filename, "finger%d.pgm", img_idx++);
+ snprintf(filename, sizeof(filename), "finger%d.pgm", img_idx++);
fd = fopen(filename, "w");
if (!fd)
return -1;
fputs("P5 384 289 255 ", fd);
- fwrite(data + 64, 1, 384*289, fd);
+ (void) fwrite(data + 64, 1, 384*289, fd);
fclose(fd);
printf("saved image to %s\n", filename);
return 0;
return 0;
}
-static void cb_irq(struct libusb_transfer *transfer)
+static void LIBUSB_CALL cb_irq(struct libusb_transfer *transfer)
{
unsigned char irqtype = transfer->buffer[0];
if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
fprintf(stderr, "irq transfer status %d?\n", transfer->status);
do_exit = 2;
+ libusb_free_transfer(transfer);
irq_transfer = NULL;
return;
}
do_exit = 2;
}
-static void cb_img(struct libusb_transfer *transfer)
+static void LIBUSB_CALL cb_img(struct libusb_transfer *transfer)
{
if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
fprintf(stderr, "img transfer status %d?\n", transfer->status);
do_exit = 2;
+ libusb_free_transfer(transfer);
img_transfer = NULL;
return;
}
if (r < 0) {
libusb_cancel_transfer(irq_transfer);
while (irq_transfer)
- if (libusb_handle_events() < 0)
+ if (libusb_handle_events(NULL) < 0)
break;
return r;
}
img_transfer = libusb_alloc_transfer(0);
if (!img_transfer)
return -ENOMEM;
-
+
irq_transfer = libusb_alloc_transfer(0);
if (!irq_transfer)
return -ENOMEM;
static void sighandler(int signum)
{
- do_exit = 1;
+ (void)signum;
+
+ do_exit = 1;
}
int main(void)
{
struct sigaction sigact;
- int r = 1;
+ int r;
- r = libusb_init();
+ r = libusb_init(NULL);
if (r < 0) {
fprintf(stderr, "failed to initialise libusb\n");
exit(1);
r = libusb_claim_interface(devh, 0);
if (r < 0) {
- fprintf(stderr, "usb_claim_interface error %d %s\n", r, strerror(-r));
+ fprintf(stderr, "usb_claim_interface error %d\n", r);
goto out;
}
printf("claimed interface\n");
sigaction(SIGQUIT, &sigact, NULL);
while (!do_exit) {
- r = libusb_handle_events();
+ r = libusb_handle_events(NULL);
if (r < 0)
goto out_deinit;
}
printf("shutting down...\n");
- r = libusb_cancel_transfer(irq_transfer);
- if (r < 0)
- goto out_deinit;
+ if (irq_transfer) {
+ r = libusb_cancel_transfer(irq_transfer);
+ if (r < 0)
+ goto out_deinit;
+ }
+
+ if (img_transfer) {
+ r = libusb_cancel_transfer(img_transfer);
+ if (r < 0)
+ goto out_deinit;
+ }
- r = libusb_cancel_transfer(img_transfer);
- if (r < 0)
- goto out_deinit;
-
while (irq_transfer || img_transfer)
- if (libusb_handle_events() < 0)
+ if (libusb_handle_events(NULL) < 0)
break;
-
+
if (do_exit == 1)
r = 0;
else
libusb_release_interface(devh, 0);
out:
libusb_close(devh);
- libusb_exit();
+ libusb_exit(NULL);
return r >= 0 ? r : -r;
}
-