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Enrollment: improved error reporting

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Convert enrollment function to return a signed integer, which is negative
on error or corresponds into fp_enroll_result otherwise.
Now we can treat a 'FAIL' condition differently from an actual error: fail
means that enrollment didn't complete because the data was nonsense or
whatever (e.g. scanned a different finger for each stage?).

Updated upekts accordingly.
This commit is contained in:
Daniel Drake
2007-10-14 00:45:49 +01:00
committed by Daniel Drake
parent ab5b1ca8e9
commit 39271b4fe5
5 changed files with 62 additions and 36 deletions
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10
libfprint/fprint.h
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@@ -41,18 +41,18 @@ int fp_dev_get_nr_enroll_stages(struct fp_dev *dev);
const char *fp_driver_get_name(const struct fp_driver *drv);
const char *fp_driver_get_full_name(const struct fp_driver *drv);
/* Enrolment */
enum fp_enroll_status {
/* Enrollment */
enum fp_enroll_result {
FP_ENROLL_COMPLETE = 1,
FP_ENROLL_FAIL,
FP_ENROLL_PASS,
FP_ENROLL_RETRY,
FP_ENROLL_RETRY = 100,
FP_ENROLL_RETRY_TOO_SHORT,
FP_ENROLL_RETRY_CENTER_FINGER,
FP_ENROLL_RETRY_REMOVE_FINGER,
};
enum fp_enroll_status fp_enroll_finger(struct fp_dev *dev,
struct fp_print_data **print_data);
int fp_enroll_finger(struct fp_dev *dev, struct fp_print_data **print_data);
/* Data handling */
void fp_print_data_free(struct fp_print_data *data);