Re: libv4l release: 0.5.97: the whitebalance release!
unz <[email protected]> Thu, 16 Apr 2009 23:08:25 +0200
| Newsgroups | gmane.linux.drivers.spca50x.devel |
|---|---|
| Message-ID | <1239916105.7054.4.camel@unzLap> |
--===============0001805625003009385== Content-Type: multipart/alternative; boundary="=-AWkXZGlFw9KVPVGXAFmL" --=-AWkXZGlFw9KVPVGXAFmL Content-Type: text/plain Content-Transfer-Encoding: 7bit [ 6676.652155] Linux video capture interface: v2.00 [ 6676.657242] gspca: main v2.3.0 registered [ 6683.100902] gspca: probing 046d:0892 [ 6683.308568] vc032x: check sensor header 44 [ 6683.313814] vc032x: Read Sensor h (0x00) m (0x30) l (0x31) [ 6683.319439] vc032x: Read Sensor h (0x00) m (0x30) l (0x31) [ 6683.333155] vc032x: Read Sensor h (0x00) m (0x30) l (0x31) [ 6683.333575] vc032x: Find Sensor PO3130NC [ 6683.335549] gspca: probe ok [ 6683.335586] usbcore: registered new interface driver vc032x [ 6683.335592] vc032x: registered root@unzLap:/home/unz/Scrivania/libv4l-0.5.97# export LIBV4LCONTROL_CONTROLS=15 root@unzLap:/home/unz/Scrivania/libv4l-0.5.97# LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so v4l2ucp& I tried playing a little with this webcam ... nothing changes. Gianni Il giorno gio, 16/04/2009 alle 01.02 +0200, Hans de Goede ha scritto: > On 04/16/2009 12:26 AM, Adam Baker wrote: > > On Wednesday 15 Apr 2009, Hans de Goede wrote: > >> Currently only whitebalancing is enabled and only on Pixarts (pac) webcams > >> (which benefit tremendously from this). To test this with other webcams > >> (after instaling this release) do: > >> > >> export LIBV4LCONTROL_CONTROLS=15 > >> LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so v4l2ucp& > >> > > > > Strangely while those instructions give me a whitebalance control for the > > sq905 based camera I can't get it to appear for a pac207 based camera > > regardless of whether LIBV4LCONTROL_CONTROLS is set. > > > > Thats weird, there is a small bug in the handling of pac207 > cams with usb id 093a:2476 causing libv4l to not automatically > enable whitebalancing (and the control) for cams with that id, > but if you have LIBV4LCONTROL_CONTROLS set (exported!) both > when loading v4l2ucp (you must preload v4l2convert.so!) and > when loading your viewer, then it should work. > > >> Notice the whitebalance and normalize checkboxes in v4l2ucp, > >> as well as low and high limits for normalize. > >> > >> Now start your favorite webcam viewing app and play around with the > >> 2 checkboxes. Note normalize seems to be useless in most cases. If > >> whitebalancing makes a *strongly noticable* difference for your webcam > >> please mail me info about your cam (the usb id), then I can add it to > >> the list of cams which will have the whitebalancing algorithm (and the v4l2 > >> control to enable/disable it) enabled by default. > > > > The whitebalance works really well with the sq905 (ID 2770:9120). Without it > > the image is very red when using artificial light, with auto whitebalance the > > colours look slightly desaturated but otherwise fine. > > > > Good to hear it helps for the sq905 too, is that the only know id for sq905 cams ? > > Regards, > > Hans > > > Adam > > > > > ------------------------------------------------------------------------------ > Stay on top of everything new and different, both inside and > around Java (TM) technology - register by April 22, and save > $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. > 300 plus technical and hands-on sessions. Register today. > Use priority code J9JMT32. http://p.sf.net/sfu/p > _______________________________________________ > Spca50x-devs mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/spca50x-devs --=-AWkXZGlFw9KVPVGXAFmL Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: 7bit <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.26.0"> </HEAD> <BODY> [ 6676.652155] Linux video capture interface: v2.00<BR> [ 6676.657242] gspca: main v2.3.0 registered<BR> [ 6683.100902] gspca: probing 046d:0892<BR> [ 6683.308568] vc032x: check sensor header 44<BR> [ 6683.313814] vc032x: Read Sensor h (0x00) m (0x30) l (0x31)<BR> [ 6683.319439] vc032x: Read Sensor h (0x00) m (0x30) l (0x31)<BR> [ 6683.333155] vc032x: Read Sensor h (0x00) m (0x30) l (0x31)<BR> [ 6683.333575] vc032x: Find Sensor PO3130NC<BR> [ 6683.335549] gspca: probe ok<BR> [ 6683.335586] usbcore: registered new interface driver vc032x<BR> [ 6683.335592] vc032x: registered<BR> root@unzLap:/home/unz/Scrivania/libv4l-0.5.97# export LIBV4LCONTROL_CONTROLS=15<BR> root@unzLap:/home/unz/Scrivania/libv4l-0.5.97# LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so v4l2ucp&<BR> <BR> <BR> I tried playing a little with this webcam ... nothing changes.<BR> <BR> Gianni<BR> <BR> <BR> <BR> Il giorno gio, 16/04/2009 alle 01.02 +0200, Hans de Goede ha scritto: <BLOCKQUOTE TYPE=CITE> <PRE> On 04/16/2009 12:26 AM, Adam Baker wrote: > On Wednesday 15 Apr 2009, Hans de Goede wrote: >> Currently only whitebalancing is enabled and only on Pixarts (pac) webcams >> (which benefit tremendously from this). To test this with other webcams >> (after instaling this release) do: >> >> export LIBV4LCONTROL_CONTROLS=15 >> LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so v4l2ucp& >> > > Strangely while those instructions give me a whitebalance control for the > sq905 based camera I can't get it to appear for a pac207 based camera > regardless of whether LIBV4LCONTROL_CONTROLS is set. > Thats weird, there is a small bug in the handling of pac207 cams with usb id 093a:2476 causing libv4l to not automatically enable whitebalancing (and the control) for cams with that id, but if you have LIBV4LCONTROL_CONTROLS set (exported!) both when loading v4l2ucp (you must preload v4l2convert.so!) and when loading your viewer, then it should work. >> Notice the whitebalance and normalize checkboxes in v4l2ucp, >> as well as low and high limits for normalize. >> >> Now start your favorite webcam viewing app and play around with the >> 2 checkboxes. Note normalize seems to be useless in most cases. If >> whitebalancing makes a *strongly noticable* difference for your webcam >> please mail me info about your cam (the usb id), then I can add it to >> the list of cams which will have the whitebalancing algorithm (and the v4l2 >> control to enable/disable it) enabled by default. > > The whitebalance works really well with the sq905 (ID 2770:9120). Without it > the image is very red when using artificial light, with auto whitebalance the > colours look slightly desaturated but otherwise fine. > Good to hear it helps for the sq905 too, is that the only know id for sq905 cams ? Regards, Hans > Adam > ------------------------------------------------------------------------------ Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. <A HREF="http://p.sf.net/sfu/p">http://p.sf.net/sfu/p</A> _______________________________________________ Spca50x-devs mailing list <A HREF="mailto:[email protected]">[email protected]</A> <A HREF="https://lists.sourceforge.net/lists/listinfo/spca50x-devs">https://lists.sourceforge.net/lists/listinfo/spca50x-devs</A> </PRE> </BLOCKQUOTE> </BODY> </HTML> --=-AWkXZGlFw9KVPVGXAFmL-- --===============0001805625003009385== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------------ Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p --===============0001805625003009385== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Spca50x-devs mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/spca50x-devs --===============0001805625003009385==--