From: CityK <cityk@rogers.com>
To: Sergei Antonov <sa@sa.pp.ru>
Cc: video4linux-list@redhat.com
Subject: Re: Genius Look 317
Date: Sun, 22 Feb 2009 15:49:20 -0500 [thread overview]
Message-ID: <49A1BA50.4090201@rogers.com> (raw)
In-Reply-To: <F13ADD43ECED4C45A8BE7A74E5B02BFE@W1>
Sergei Antonov wrote:
> Hi!
> I'm trying to make 'Genius Look 317' (0c45:60b0, gspca recognizes it)
> webcam work.
>
> v4lgrab.c (from linux-2.6.28.5\Documentation\video4linux) loops
> infinitely in this code:
>
> do {
> int newbright;
> read(fd, buffer, win.width * win.height * bpp);
> f = get_brightness_adj(buffer, win.width * win.height, &newbright);
> if (f) {
> vpic.brightness += (newbright << 8);
> if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
> perror("VIDIOSPICT");
> break;
> }
> }
> } while (f);
>
> because variable 'f' is always non-zero.
> If I write 'while(0);' the resulting .ppm contains some random pixels
> in the top and the rest of the picture is black.
> Need help.
Hi, I'd re-title your message to include the fact that its a gspca based
webcam (to attract those developers attention) and send it off to the
linux-media mailing list (which is where discussion is transitioning to:
http://www.linuxtv.org/news.php?entry=2009-01-06.mchehab)
Cheers
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next prev parent reply other threads:[~2009-02-22 20:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-21 10:55 Genius Look 317 Sergei Antonov
2009-02-22 20:49 ` CityK [this message]
2009-02-23 8:52 ` Sergei Antonov
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