expect yuv420p color palette
Status: Beta
Brought to you by:
jick
Menu
▾
▴
#3 expect yuv420p color palette
camserv-0.42 expects that the image is returned in
RGB24 color format by the videodevice.
However, some drivers like the Philips webcam driver
for Linux (http://www.smcc.demon.nl/webcam/) only
support the YUV420P color palette.
This patch adds the rgb24 to yuv420p color palette
conversion functions (ripped from the xawtv sources)
and makes camserv _expect_ the YUV420P color
palette.
Therefore, this patch should only be applied by users
using camserv with drivers supporting the YUV420P
color palette.
I'd glad if someone adds some code to check for the
supported color palettes and use the required
conversion functions accordingly.
Comments or questions are welcome.
Regards, Walter
PS: To apply the patch cd into the directory where you
extracted the camserv-0.42 source and do:
patch -p1 < camserv-0.42_yuv.diff
Then configure and build camserv as usual,
documented in the INSTALL and README files.
rgb24 to yuv420p color palette patch
Logged In: YES
user_id=324515
Note:
This patch is _identical_ to the one just posted minutes ago
having request id ##461827.
rgb24 to yuv420p color palette patch
RGB to YUV palette patch, updated version
Logged In: YES
user_id=324515
*** Update (2001-11-15) ***
Uploaded a cleaned up version of the patch.
Please use always the most recent version!
Thanks!
Logged In: NO
Lieber Herr Haidinger,
wie wre es mit einem Patch fr Camserv Version 0.5?
Gruss Lutz Voigt
Logged In: YES
user_id=324515
FYI: The camserv-0.42-YUV-20011115.diff also applies to
0.5.0 with only some line offsets.
Also, change 'calculate_pic_mean()' to '
camserv_get_pic_mean' in line 646 of
camserv-0.5.0/camserv/video_fbsd_bttv.c
This obviously slipped through but a bug-fix release
should be available soon.
Then, the libraries have moved to /usr/local/lib/camserv so
you might need to update your config files accordingly.
Logged In: YES
user_id=324515
FYI: The CVS tree now incorporates the YUV420 patch. camserv
will automatically select either the RGB or YUV color palette.
Works for me with the CVS snapshot from May 16th, Linux pwc
8.6 and pwcx 8.2.1 philips webcam drivers.
To retrieve from CVS do (hit Return if prompted for a password):
cvs -z3
-d:pserver:anonymous@cvs.cserv.sourceforge.net:/cvsroot/cserv
login
cvs -z3
-d:pserver:anonymous@cvs.cserv.sourceforge.net:/cvsroot/cserv
co camserv
cd camserv
./autogen.sh
PS: As noted by the author of camserv, the text filters now
use the strftime format.
Logged In: NO
Hi!
How do I have to configure the patched camserv so it works
with my Philips PCVC740K (ToUCam Pro)?
It seems as if camserv doesn't even open /dev/video.
Best regards
Hans-Peter Bock
Logged In: YES
user_id=324515
The patch does not have to be configured.
It just changes the way how data in an input buffer is
interpreted.
If the video device isn't opened, you have some other, more
general problems. Which version did you try? 0.42, 0.5 or
CVS? Which kernel version (say, which pwc drivers) are you
running?
Please answer the above questions to my private address
(walter.haidinger@gmx.at) and I'll try to help you.
Don't forget to attach the camserv config file you're using!
Regards, Walter
Logged In: YES
user_id=594767
if my input device output the format jpeg,what can i do??thank..
,
,
,
,
,
,
,
,
,
,