[fprint] libfprint examples are broken for ages?

[Vasily Khoruzhick]

Hi Paul,

see https://bugs.freedesktop.org/show_bug.cgi?id=60445

Regards
Vasily


On Sat, May 4, 2013 at 5:12 PM, Paul Sokolovsky <pmiscml at gmail.com> wrote:

> Hello,
>
> I'd like to to help with testing recently posted AES3500 patch.
>
> Running img_capture example (output filtered):
>
> --------
> $ sudo ./examples/img_capture
> supports USB device 08ff:5731 Found device claimed by AuthenTec AES3500
> Opened device. It's now time to scan your finger.
>
> image capture failed, code -95
> sync:debug [fp_dev_close]
> --------
>
> $ git blame core.c
> --------
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 840) API_EXPORTED
> int fp_dev_img_capture(struct fp_dev *dev, int unconditional,
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 841)    struct
> fp_img **image)
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 842) {
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 843)    struct
> fp_img_dev *imgdev = dev_to_img_dev(dev);
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 844)    if
> (!imgdev) {
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 845)
>  fp_dbg("image capture on non-imaging device");
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 846)
>  return -ENOTSUP;
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 847)    }
> 7e6f2590 (Daniel Drake        2007-11-02 17:04:19 +0000 848)
> 3048b371 (Daniel Drake        2008-02-10 18:35:01 +0000 849)    //return
> fpi_imgdev_capture(imgdev, unconditional, image);
> 3048b371 (Daniel Drake        2008-02-10 18:35:01 +0000 850)    /* FIXME
> reimplement async */
> 3048b371 (Daniel Drake        2008-02-10 18:35:01 +0000 851)    return
> -ENOTSUP;
>
>
> I.e. 2008, fp_dev_img_capture() was made unconditionally return
> -ENOTSUP. fpi_imgdev_capture() is declared in fp_internal.h but
> implementation not available. Thus, basic libfprint tests - capturing
> fingerprint images - appear to be broken for 5 years. Am I missing
> something?
>
>
> Thanks,
>  Paul                          mailto:pmiscml at gmail.com
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