[PD] philips 680 webcam and pdp

[Tom Schouten]

hi marc,

as chris explained, this is a problem with colour spaces. pdp_v4l tries 3
capture modes and uses the first one that is reported to work.

i've received reports of similar problems on some bttv cards, where it
seems the first format tried does not work properly, but doesn't generate
an error either. you can fix this by "cutting a wire" in pdp_v4l.c, until
i've found a better workaround.

there is a line:

// goto test;

change it in

goto test;

and recompile. this switches pdp_v4l to rgb capture, which should work.
you can also move the "test:" label up one code block so it will try to
capture in a packed instead of planar format.

tom

On Sat, 23 Aug 2003, marc_widmer wrote:

> hi list
>
> finally after some nice kernelcompiling my usbwebcam is working.
> at least in camstream i recieve the images i want.
>
> but if i use the cam with pdp the xv-window is splitted into
> two parts a green and a dark green one, no images are visible.
> but there are no errors on  the printout.
>
> what could this be?
> thx marc
> --------------------------------------
> pdp_v4l: opening /dev/video
> pdp_v4l: cap: name Philips 680 webcam type 1 channels 1 maxw 640 maxh
> 480 minw 128 minh 96
> pdp_v4l: picture: brightness 32768 depth 24 palette 15
> pdp_v4l: channel 0 name Webcam type 2 flags 0
> pdp_v4l: switched to channel 0
> pdp_v4l: buffer size 921600, frames 2, offset 0 460800
> pdp_v4l: using VIDEO_PALETTE_YUV420P
> pdp_v4l: frame 0 0, format 15, width 320, height 240
> pdp_v4l: Opened video connection (320x240)
> pdp_v4l: detected pwc
> watchdog: signaling pd...
> pdp_v4l: camera framerate set to 27 fps
> pdp_ctrack : reallocated buffers
> pdp_xv: autocreate window
> pdp_xvideo: grabbed port 103 on adaptor 0
>
>
>
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