Revert 129069 - Import libusb 1.0.9-rc3 into third_party.

third_party/libusb/examples/dpfp.c

Index: third_party/libusb/examples/dpfp.c
===================================================================
--- third_party/libusb/examples/dpfp.c	(revision 129100)
+++ third_party/libusb/examples/dpfp.c	(working copy)
@@ -1,507 +0,0 @@
-/*
- * libusb example program to manipulate U.are.U 4000B fingerprint scanner.
- * Copyright (C) 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
- * flawlessly all of the time.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <errno.h>
-#include <signal.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <libusb.h>
-
-#define EP_INTR			(1 | LIBUSB_ENDPOINT_IN)
-#define EP_DATA			(2 | LIBUSB_ENDPOINT_IN)
-#define CTRL_IN			(LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN)
-#define CTRL_OUT		(LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT)
-#define USB_RQ			0x04
-#define INTR_LENGTH		64
-
-enum {
-	MODE_INIT = 0x00,
-	MODE_AWAIT_FINGER_ON = 0x10,
-	MODE_AWAIT_FINGER_OFF = 0x12,
-	MODE_CAPTURE = 0x20,
-	MODE_SHUT_UP = 0x30,
-	MODE_READY = 0x80,
-};
-
-static int next_state(void);
-
-enum {
-	STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON = 1,
-	STATE_AWAIT_IRQ_FINGER_DETECTED,
-	STATE_AWAIT_MODE_CHANGE_CAPTURE,
-	STATE_AWAIT_IMAGE,
-	STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF,
-	STATE_AWAIT_IRQ_FINGER_REMOVED,
-};
-
-static int state = 0;
-static struct libusb_device_handle *devh = NULL;
-static unsigned char imgbuf[0x1b340];
-static unsigned char irqbuf[INTR_LENGTH];
-static struct libusb_transfer *img_transfer = NULL;
-static struct libusb_transfer *irq_transfer = NULL;
-static int img_idx = 0;
-static int do_exit = 0;
-
-static int find_dpfp_device(void)
-{
-	devh = libusb_open_device_with_vid_pid(NULL, 0x05ba, 0x000a);
-	return devh ? 0 : -EIO;
-}
-
-static int print_f0_data(void)
-{
-	unsigned char data[0x10];
-	int r;
-	unsigned int i;
-
-	r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0xf0, 0, data,
-		sizeof(data), 0);
-	if (r < 0) {
-		fprintf(stderr, "F0 error %d\n", r);
-		return r;
-	}
-	if ((unsigned int) r < sizeof(data)) {
-		fprintf(stderr, "short read (%d)\n", r);
-		return -1;
-	}
-
-	printf("F0 data:");
-	for (i = 0; i < sizeof(data); i++)
-		printf("%02x ", data[i]);
-	printf("\n");
-	return 0;
-}
-
-static int get_hwstat(unsigned char *status)
-{
-	int r;
-
-	r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0x07, 0, status, 1, 0);
-	if (r < 0) {
-		fprintf(stderr, "read hwstat error %d\n", r);
-		return r;
-	}
-	if ((unsigned int) r < 1) {
-		fprintf(stderr, "short read (%d)\n", r);
-		return -1;
-	}
-
-	printf("hwstat reads %02x\n", *status);
-	return 0;
-}
-
-static int set_hwstat(unsigned char data)
-{
-	int r;
-
-	printf("set hwstat to %02x\n", data);
-	r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x07, 0, &data, 1, 0);
-	if (r < 0) {
-		fprintf(stderr, "set hwstat error %d\n", r);
-		return r;
-	}
-	if ((unsigned int) r < 1) {
-		fprintf(stderr, "short write (%d)", r);
-		return -1;
-	}
-
-	return 0;
-}
-
-static int set_mode(unsigned char data)
-{
-	int r;
-	printf("set mode %02x\n", data);
-
-	r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x4e, 0, &data, 1, 0);
-	if (r < 0) {
-		fprintf(stderr, "set mode error %d\n", r);
-		return r;
-	}
-	if ((unsigned int) r < 1) {
-		fprintf(stderr, "short write (%d)", r);
-		return -1;
-	}
-
-	return 0;
-}
-
-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");
-		do_exit = 2;
-	}
-
-	printf("async cb_mode_changed length=%d actual_length=%d\n",
-		transfer->length, transfer->actual_length);
-	if (next_state() < 0)
-		do_exit = 2;
-}
-
-static int set_mode_async(unsigned char data)
-{
-	unsigned char *buf = malloc(LIBUSB_CONTROL_SETUP_SIZE + 1);
-	struct libusb_transfer *transfer;
-
-	if (!buf)
-		return -ENOMEM;
-
-	transfer = libusb_alloc_transfer(0);
-	if (!transfer) {
-		free(buf);
-		return -ENOMEM;
-	}
-
-	printf("async set mode %02x\n", data);
-	libusb_fill_control_setup(buf, CTRL_OUT, USB_RQ, 0x4e, 0, 1);
-	buf[LIBUSB_CONTROL_SETUP_SIZE] = data;
-	libusb_fill_control_transfer(transfer, devh, buf, cb_mode_changed, NULL,
-		1000);
-
-	transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK
-		| LIBUSB_TRANSFER_FREE_BUFFER | LIBUSB_TRANSFER_FREE_TRANSFER;
-	return libusb_submit_transfer(transfer);
-}
-
-static int do_sync_intr(unsigned char *data)
-{
-	int r;
-	int transferred;
-
-	r = libusb_interrupt_transfer(devh, EP_INTR, data, INTR_LENGTH,
-		&transferred, 1000);
-	if (r < 0) {
-		fprintf(stderr, "intr error %d\n", r);
-		return r;
-	}
-	if (transferred < INTR_LENGTH) {
-		fprintf(stderr, "short read (%d)\n", r);
-		return -1;
-	}
-
-	printf("recv interrupt %04x\n", *((uint16_t *) data));
-	return 0;
-}
-
-static int sync_intr(unsigned char type)
-{
-	int r;
-	unsigned char data[INTR_LENGTH];
-
-	while (1) {
-		r = do_sync_intr(data);
-		if (r < 0)
-			return r;
-		if (data[0] == type)
-			return 0;
-	}
-}
-
-static int save_to_file(unsigned char *data)
-{
-	FILE *fd;
-	char filename[64];
-
-	sprintf(filename, "finger%d.pgm", img_idx++);
-	fd = fopen(filename, "w");
-	if (!fd)
-		return -1;
-
-	fputs("P5 384 289 255 ", fd);
-	(void) fwrite(data + 64, 1, 384*289, fd);
-	fclose(fd);
-	printf("saved image to %s\n", filename);
-	return 0;
-}
-
-static int next_state(void)
-{
-	int r = 0;
-	printf("old state: %d\n", state);
-	switch (state) {
-	case STATE_AWAIT_IRQ_FINGER_REMOVED:
-		state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON;
-		r = set_mode_async(MODE_AWAIT_FINGER_ON);
-		break;
-	case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON:
-		state = STATE_AWAIT_IRQ_FINGER_DETECTED;
-		break;
-	case STATE_AWAIT_IRQ_FINGER_DETECTED:
-		state = STATE_AWAIT_MODE_CHANGE_CAPTURE;
-		r = set_mode_async(MODE_CAPTURE);
-		break;
-	case STATE_AWAIT_MODE_CHANGE_CAPTURE:
-		state = STATE_AWAIT_IMAGE;
-		break;
-	case STATE_AWAIT_IMAGE:
-		state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF;
-		r = set_mode_async(MODE_AWAIT_FINGER_OFF);
-		break;
-	case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF:
-		state = STATE_AWAIT_IRQ_FINGER_REMOVED;
-		break;
-	default:
-		printf("unrecognised state %d\n", state);
-	}
-	if (r < 0) {
-		fprintf(stderr, "error detected changing state\n");
-		return r;
-	}
-
-	printf("new state: %d\n", state);
-	return 0;
-}
-
-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;
-	}
-
-	printf("IRQ callback %02x\n", irqtype);
-	switch (state) {
-	case STATE_AWAIT_IRQ_FINGER_DETECTED:
-		if (irqtype == 0x01) {
-			if (next_state() < 0) {
-				do_exit = 2;
-				return;
-			}
-		} else {
-			printf("finger-on-sensor detected in wrong state!\n");
-		}
-		break;
-	case STATE_AWAIT_IRQ_FINGER_REMOVED:
-		if (irqtype == 0x02) {
-			if (next_state() < 0) {
-				do_exit = 2;
-				return;
-			}
-		} else {
-			printf("finger-on-sensor detected in wrong state!\n");
-		}
-		break;
-	}
-	if (libusb_submit_transfer(irq_transfer) < 0)
-		do_exit = 2;
-}
-
-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;
-	}
-
-	printf("Image callback\n");
-	save_to_file(imgbuf);
-	if (next_state() < 0) {
-		do_exit = 2;
-		return;
-	}
-	if (libusb_submit_transfer(img_transfer) < 0)
-		do_exit = 2;
-}
-
-static int init_capture(void)
-{
-	int r;
-
-	r = libusb_submit_transfer(irq_transfer);
-	if (r < 0)
-		return r;
-
-	r = libusb_submit_transfer(img_transfer);
-	if (r < 0) {
-		libusb_cancel_transfer(irq_transfer);
-		while (irq_transfer)
-			if (libusb_handle_events(NULL) < 0)
-				break;
-		return r;
-	}
-
-	/* start state machine */
-	state = STATE_AWAIT_IRQ_FINGER_REMOVED;
-	return next_state();
-}
-
-static int do_init(void)
-{
-	unsigned char status;
-	int r;
-
-	r = get_hwstat(&status);
-	if (r < 0)
-		return r;
-
-	if (!(status & 0x80)) {
-		r = set_hwstat(status | 0x80);
-		if (r < 0)
-			return r;
-		r = get_hwstat(&status);
-		if (r < 0)
-			return r;
-	}
-
-	status &= ~0x80;
-	r = set_hwstat(status);
-	if (r < 0)
-		return r;
-
-	r = get_hwstat(&status);
-	if (r < 0)
-		return r;
-
-	r = sync_intr(0x56);
-	if (r < 0)
-		return r;
-
-	return 0;
-}
-
-static int alloc_transfers(void)
-{
-	img_transfer = libusb_alloc_transfer(0);
-	if (!img_transfer)
-		return -ENOMEM;
-
-	irq_transfer = libusb_alloc_transfer(0);
-	if (!irq_transfer)
-		return -ENOMEM;
-
-	libusb_fill_bulk_transfer(img_transfer, devh, EP_DATA, imgbuf,
-		sizeof(imgbuf), cb_img, NULL, 0);
-	libusb_fill_interrupt_transfer(irq_transfer, devh, EP_INTR, irqbuf,
-		sizeof(irqbuf), cb_irq, NULL, 0);
-
-	return 0;
-}
-
-static void sighandler(int signum)
-{
-	do_exit = 1;
-}
-
-int main(void)
-{
-	struct sigaction sigact;
-	int r = 1;
-
-	r = libusb_init(NULL);
-	if (r < 0) {
-		fprintf(stderr, "failed to initialise libusb\n");
-		exit(1);
-	}
-
-	r = find_dpfp_device();
-	if (r < 0) {
-		fprintf(stderr, "Could not find/open device\n");
-		goto out;
-	}
-
-	r = libusb_claim_interface(devh, 0);
-	if (r < 0) {
-		fprintf(stderr, "usb_claim_interface error %d\n", r);
-		goto out;
-	}
-	printf("claimed interface\n");
-
-	r = print_f0_data();
-	if (r < 0)
-		goto out_release;
-
-	r = do_init();
-	if (r < 0)
-		goto out_deinit;
-
-	/* async from here onwards */
-
-	r = alloc_transfers();
-	if (r < 0)
-		goto out_deinit;
-
-	r = init_capture();
-	if (r < 0)
-		goto out_deinit;
-
-	sigact.sa_handler = sighandler;
-	sigemptyset(&sigact.sa_mask);
-	sigact.sa_flags = 0;
-	sigaction(SIGINT, &sigact, NULL);
-	sigaction(SIGTERM, &sigact, NULL);
-	sigaction(SIGQUIT, &sigact, NULL);
-
-	while (!do_exit) {
-		r = libusb_handle_events(NULL);
-		if (r < 0)
-			goto out_deinit;
-	}
-
-	printf("shutting down...\n");
-
-	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;
-	}
-
-	while (irq_transfer || img_transfer)
-		if (libusb_handle_events(NULL) < 0)
-			break;
-
-	if (do_exit == 1)
-		r = 0;
-	else
-		r = 1;
-
-out_deinit:
-	libusb_free_transfer(img_transfer);
-	libusb_free_transfer(irq_transfer);
-	set_mode(0);
-	set_hwstat(0x80);
-out_release:
-	libusb_release_interface(devh, 0);
-out:
-	libusb_close(devh);
-	libusb_exit(NULL);
-	return r >= 0 ? r : -r;
-}
-