Bonjour,
j'ai un probleme avec la libfprint. je vais poser le code mais juste avant j'explique ce qui ce passe:
c'est dans la fonction enroll que les choses vont mal car on a visiblement jamais le cas FP_ENROLL_COMPLETED.
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <libfprint/fprint.h>
 
/********************************************************
 *      DEFINES and CONST
 *******************************************************/
 
/********************************************************
 * global var   
 *******************************************************/
 
/********************************************************
 * function prototype   
 *******************************************************/
struct fp_dscv_dev *discover_device(struct fp_dscv_dev **disc_devs);
struct fp_print_data *enroll(struct fp_dev *dev);
/********************************************************
 * function implementation      
 *******************************************************/
 
/************ main *************************************/
int main(int argc, char **argv)
{
	struct fp_dscv_dev *ddev=NULL;
	struct fp_dscv_dev **devlist=NULL;
	struct fp_dev *dev=NULL;
	struct fp_print_data *data=NULL;
	int r=1;
 
	if(fp_init()!=0)
	{
		fprintf(stderr,"Libfprint Init error\n");
		return EXIT_FAILURE;
	}
 
	devlist = fp_discover_devs();
 
	if(devlist==NULL)
	{
		fprintf(stdout,"No scan finger devices found\n");
		fp_exit();
		return EXIT_FAILURE;
	}
 
	ddev=discover_device(devlist);
	if(ddev==NULL)
	{
		fprintf(stderr,"No Devices detected.\n");
		fp_dscv_devs_free(devlist);
		fp_exit();
		return EXIT_FAILURE;
	}
 
	dev=fp_dev_open(ddev);
	fp_dscv_devs_free(devlist);
 
	if(dev==NULL)
	{
		fprintf(stderr,"Could not open device\n");
		fp_exit();
		return EXIT_FAILURE;
	}
 
	fprintf(stdout,"Let enroll your RIGHT INDEX.\n\n");
	data=enroll(dev);
 
	if(data==NULL)
		goto out;
 
	r=fp_print_data_save(data,RIGHT_INDEX);
	if(r<0)
		fprintf(stderr,"Data save failed, code %d\n",r);
 
	fp_print_data_free(data);
 
out:
	fp_dev_close(dev);
	fp_exit();
 
	return EXIT_SUCCESS;
}
 
/************ discover device *************************************/
struct fp_dscv_dev *discover_device(struct fp_dscv_dev **disc_devs)
{
	struct fp_dscv_dev *ddev=disc_devs[0];
	struct fp_driver *drv;
	if(!ddev)
		return NULL;
 
	drv=fp_dscv_dev_get_driver(ddev);
	fprintf(stdout,"Found Device claimed by %s driver\n",fp_driver_get_full_name(drv));
	return ddev;
}
 
/************ enroll *************************************/
struct fp_print_data *enroll(struct fp_dev *dev)
{
	struct fp_print_data *enrolled_print=NULL;
	int r,num=1;
	int stg=fp_dev_get_nr_enroll_stages(dev);
 
	fprintf(stdout,"You will need to successfully scann your finder %d time%c to"
			"complete the process.\n",stg,(stg>1)?'s':' ');
	do
	{
		struct fp_img *img=NULL;
		sleep(1);
		fprintf(stdout,"Scan your finger %d/%d\n",num,stg);
 
		r=fp_enroll_finger_img(dev,&enrolled_print,&img);
		fprintf(stdout,"r=%d\n",r);
		if(img)
		{
			fp_img_save_to_file(img,"enrolled.pgm");
			fprintf(stdout,"Wrote scanned image to enrolled.pgm\n");
			fp_img_free(img);
		}
		if(r<0)
		{
			fprintf(stderr,"Enroll Failed with error %d\n",r);
			return NULL;
		}
		++num;
		switch(r)
		{
			case FP_ENROLL_COMPLETE:
				fprintf(stdout,"Enroll complete!\n");
				break;
			case FP_ENROLL_FAIL:
				fprintf(stdout,"Enroll failed, something wen't wrong\n");
				return enrolled_print;
			case FP_ENROLL_PASS:
				fprintf(stdout,"Scan OK\n");
				break;
			case FP_ENROLL_RETRY:
				--num;
				fprintf(stdout,"Please try again\n");
				break;
			case FP_ENROLL_RETRY_TOO_SHORT:
				--num;
				fprintf(stdout,"Your swipe was too short,Please try again\n");
				break;
			case FP_ENROLL_RETRY_CENTER_FINGER:
				--num;
				fprintf(stdout,"Didn't catch, Please center your finger on sensor and try again\n");
				break;
			case FP_ENROLL_RETRY_REMOVE_FINGER:
				--num;
				fprintf(stdout,"Scan failed Please remove your finger and then try again\n");
				break;
		}
	}
	while(r != FP_ENROLL_COMPLETE);
 
	if(enrolled_print==NULL)
	{
		fprintf(stderr,"Enroll complete but no print?\n");
		return NULL;
	}
 
	fprintf(stdout,"Enrollment successfully completed!\n\n");
	return enrolled_print;
}
et quand j'execute j'ai:
su -c './enrolltest'
Password:
Found Device claimed by UPEK Eikon 2 driver
Let enroll your RIGHT INDEX.

You will need to successfully scann your finder 5 times tocomplete the process.
Scan your finger 1/5
r=3
Scan OK
Scan your finger 2/5
r=3
Scan OK
Scan your finger 3/5
r=3
Scan OK
Scan your finger 4/5
r=3
Scan OK
Scan your finger 5/5
r=3
Scan OK
Scan your finger 6/5
r=-22
Enroll Failed with error -22
visiblement il fait un dernier scan et ca echoue, mais pendant qu'il attend pour le scan j'ai remarque que la lumier du scaneur est arretee, donc visiblement le materiel considere que le scan est complet.

je sais pas ce quoi le probleme

ps:le materiel est a coup sur bien reconnu car je l'utilise sous fedora 14 et 16 pour l'authentification GDM. A note aussi que avec le fprint_demo j'ai la meme erreur qu'avec mon code.
Merci d'avance