int fpi_img_to_print_data(struct fp_img_dev *imgdev, struct fp_img *img,
struct fp_print_data **ret)
{
struct fp_print_data *print;
int r;
if (!img->minutiae) {
r = fpi_img_detect_minutiae(img);
if (r < 0)
return r;
if (!img->minutiae) {
fp_err("no minutiae after successful detection?");
return -ENOENT;
}
}
/* FIXME: space is wasted if we dont hit the max minutiae count. would
* be good to make this dynamic. */
print = fpi_print_data_new(imgdev->dev, sizeof(struct xyt_struct));
print->type = PRINT_DATA_NBIS_MINUTIAE;
minutiae_to_xyt(img->minutiae, img->width, img->height, print->data);
/* FIXME: the print buffer at this point is endian-specific, and will
* only work when loaded onto machines with identical endianness. not good!
* data format should be platform-independent. */
*ret = print;
return 0;
}
void fpi_imgdev_image_captured(struct fp_img_dev *imgdev, struct fp_img *img)
{
struct fp_print_data *print;
int r;
fp_dbg("");
if (imgdev->action_state != IMG_ACQUIRE_STATE_AWAIT_IMAGE) {
fp_dbg("ignoring due to current state %d", imgdev->action_state);
return;
}
if (imgdev->action_result) {
fp_dbg("not overwriting existing action result");
return;
}
r = sanitize_image(imgdev, &img);
if (r < 0) {
imgdev->action_result = r;
fp_img_free(img);
goto next_state;
}
fp_img_standardize(img);
imgdev->acquire_img = img;
if (imgdev->action != IMG_ACTION_CAPTURE) {
r = fpi_img_to_print_data(imgdev, img, &print);
if (r < 0) {
fp_dbg("image to print data conversion error: %d", r);
imgdev->action_result = FP_ENROLL_RETRY;
goto next_state;
} else if (img->minutiae->num < MIN_ACCEPTABLE_MINUTIAE) {
fp_dbg("not enough minutiae, %d/%d", img->minutiae->num,
MIN_ACCEPTABLE_MINUTIAE);
fp_print_data_free(print);
/* depends on FP_ENROLL_RETRY == FP_VERIFY_RETRY */
imgdev->action_result = FP_ENROLL_RETRY;
goto next_state;
}
}
imgdev->acquire_data = print;
switch (imgdev->action) {
case IMG_ACTION_ENROLL:
if (!imgdev->enroll_data) {
imgdev->enroll_data = fpi_print_data_new(imgdev->dev);
}
BUG_ON(g_slist_length(print->prints) != 1);
/* Move print data from acquire data into enroll_data */
imgdev->enroll_data->prints =
g_slist_prepend(imgdev->enroll_data->prints, print->prints->data);
print->prints = g_slist_remove(print->prints, print->prints->data);
fp_print_data_free(imgdev->acquire_data);
imgdev->acquire_data = NULL;
imgdev->enroll_stage++;
if (imgdev->enroll_stage == imgdev->dev->nr_enroll_stages)
imgdev->action_result = FP_ENROLL_COMPLETE;
else
imgdev->action_result = FP_ENROLL_PASS;
break;
case IMG_ACTION_VERIFY:
verify_process_img(imgdev);
break;
case IMG_ACTION_IDENTIFY:
identify_process_img(imgdev);
break;
case IMG_ACTION_CAPTURE:
imgdev->action_result = FP_CAPTURE_COMPLETE;
break;
default:
BUG();
break;
}
next_state:
imgdev->action_state = IMG_ACQUIRE_STATE_AWAIT_FINGER_OFF;
dev_change_state(imgdev, IMGDEV_STATE_AWAIT_FINGER_OFF);
}
