Hello Florian,
I'm writting still image feature for linux-uvc. If you want to collaborate you may work about timing problem, because it's very important to resolve. You may read about "Timestamps" in UVC documentation pdf. Thanks for your collaboration Palmax 2010/9/9 <linux-uvc-devel-requ...@lists.berlios.de>: > Send Linux-uvc-devel mailing list submissions to > linux-uvc-de...@lists.berlios.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel > or, via email, send a message with subject or body 'help' to > linux-uvc-devel-requ...@lists.berlios.de > > You can reach the person managing the list at > linux-uvc-devel-ow...@lists.berlios.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Linux-uvc-devel digest..." > > > Today's Topics: > > 1. [PATCH] Still image support (very broken and hackish) > (Florian Echtler) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 09 Sep 2010 11:30:41 +0200 > From: Florian Echtler <f...@butterbrot.org> > To: linux-uvc-devel@lists.berlios.de > Subject: [Linux-uvc-devel] [PATCH] Still image support (very broken > and hackish) > Message-ID: <1284024641.2294.43.ca...@flunder> > Content-Type: text/plain; charset="utf-8" > > Hello everybody, > > since the topic of still image support has come up time and again, I've > decided to give it a shot. After reading the UVC spec, it seems that > there isn't too much difference to the normal operation, so I created a > new set of functions from uvc_probe_video, uvc_commit_video and friends. > These are called uvc_probe_still, uvc_commit_still and additionally > uvc_trigger_still. > > Just for testing, I replaced the original functions with calls to the > still image functions and got somewhat mixed results with my two cams: > > - the builtin camera in my Lenovo netbook doesn't really behave any > different, it still streams images as before > > - my Quickcam S5500 doesn't do anything, guvcview complains: > Could not grab image (select timeout): Resource temporarily unavailable > > I'm aware that this is a really ugly hack right now, but maybe it > provides a starting point for those of you with more insight into how > the driver works. I'd be glad for some hints as to how to proceed! > > Thanks > Florian > > P.S. The relevant parts from the UVC spec are: > > Spec: > 2.4.2.4 Still Image Capture > 4.3.1.2 Video Still Probe/Commit Control > 4.3.1.4 Still Image Trigger Control > > FAQ: > 2.30 Still Image Transfer > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: uvc-still-image-support.patch > Type: text/x-patch > Size: 5233 bytes > Desc: not available > URL: > <https://lists.berlios.de/pipermail/linux-uvc-devel/attachments/20100909/ea7e2dd2/attachment-0001.bin> > > ------------------------------ > > _______________________________________________ > Linux-uvc-devel mailing list > Linux-uvc-devel@lists.berlios.de > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel > > > End of Linux-uvc-devel Digest, Vol 51, Issue 10 > *********************************************** > _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
