[PD] pdp and webcams
aym3ric
stm-sq at bleu255.com
Wed Jul 28 19:46:32 CEST 2004
yeah same problem here, never found out why ...
looks like the device is not closed properly ...
anyway the workaround (no need to use modprobe):
- glitches
- quit pd
- unplug the cam
- replug the cam
- start pd
- glitches are gone
On Wed, 28 Jul 2004 12:50:02 -0400
"Ian Smith-Heisters" <heisters at 0x09.com> wrote:
> Yeah, I have the same glitch sometimes. Sometimes reloading the driver
> (modprobe remove pwc, pwcx then modprobe it back in) gets rid of the
> glitch. Also make sure it's on a high speed USB port. My computer has
> four ports, but I think only three buses, so two of the ports are full
> speed USB 2.0 and the others are one fullspeed split in two (or at
> least that's what it seems like, I haven't verified this). Or maybe
> futzing with pwcx will help. It seems to happen to me after I've
> opened a connection to the camera and then closed it, then the next
> time I connect it's glitchy, so trying to not disconnect, but rather
> just hiding it might help too.
>
> Cheers,
> Ian
>
> > -----Original Message-----
> > From: pd-list-admin at iem.at [mailto:pd-list-admin at iem.at] On
> > Behalf Of jim ruxton
> > Sent: Wednesday, July 28, 2004 11:36 A
> > Cc: pd list
> > Subject: Re: [PD] pdp and webcams
> >
> > Thank you everyone for your suggestions of webcams. I bought
> > a Quickam 4000 Pro and it works well with PDP and PiDip.
> > Although I am getting a glitch in the video about every
> > second. I think I just have to experiment with the settings.
> > Thanks especially to Tom and Yves for a couple of great Externals.
> > Jim
> > > with pwc/pwcx 2.4/2.6 kernels:
> > >
> > > Philips ToUcam Pro is very fine (not produced anymore,
> > ebay?) Philips
> > > ToUcam Pro II is very fine (around 80 euros) Philips ToUcam
> > Fun II is
> > > not working properly (image reversed, random crash, huge
> > > slowdowns) (around 60 euros)
> > >
> > >
> > >
> > >
> > > On Mon, 26 Jul 2004 20:10:52 +0200
> > > Yves Degoyon <ydegoyon at free.fr> wrote:
> > >
> > > > i use an aiptek mobile v-cam ( modulo ov511 ), but i
> > don't use much
> > > > pdp/pidip myself, some friends do ( laughters )
> > > >
> > > > suerte,
> > > > sevy
> > > >
> > > > Ian Smith-Heisters wrote:
> > > >
> > > > >Quickcam 4000 works like a dream for me. There were a
> > few problems
> > > > >when kernel 2.6 first came out, but the pwc drivers are at
> > > > >9.0.1 now, and look like they'll run nicely.
> > > > >
> > > > >
> > > > >
> > > > >>-----Original Message-----
> > > > >>From: pd-list-admin at iem.at
> > [mailto:pd-list-admin at iem.at] On Behalf
> > > > >>Of jim ruxton
> > > > >>Sent: Monday, July 26, 2004 11:37 A
> > > > >>Cc: pd list
> > > > >>Subject: Re: [PD] pdp and webcams
> > > > >>
> > > > >>Thanks Tom,
> > > > >>I'm wondering if anyone can recommend a camera that
> > they are using
> > > > >>with pdp/pidip . I've tried using the Labtec camera
> > (same driver
> > > > >>as Logitech Quickcam express) which works with Gem (extremely
> > > > >>slow) but not pdp.
> > > > >>Tom suggested a camera with the Phillips Chipset. I
> > haven't seen
> > > > >>any Phillips cameras here but it appears that the Logitech
> > > > >>Quickcam 3000 and 4000 use the Phillips chipset. So
> > anyone using
> > > > >>the Logitech Quickcam 3000 or 4000 with pdp??
> > > > >>Has anyone got the Labtech camera to work with pdp.
> > > > >>Thanks,
> > > > >>Jim
> > > > >>On Sun, 2004-07-25 at 16:49, Tom Schouten wrote:
> > > > >>
> > > > >>
> > > > >>>hi jim,
> > > > >>>
> > > > >>>try to send a 'captureformat RGB24' or 'captureformat
> > > > >>>
> > > > >>>
> > > > >>RGB32' the the
> > > > >>
> > > > >>
> > > > >>>pdp_v4l object. if that doesn't help, it means your camera
> > > > >>>
> > > > >>>
> > > > >>is either
> > > > >>
> > > > >>
> > > > >>>too new (and has only a video4linux2 driver), or it doesn't
> > > > >>>support double buffered capturing, which is implicitly
> > assumed in
> > > > >>>
> > > > >>>
> > > > >>pdp_v4l, or
> > > > >>
> > > > >>
> > > > >>>has a broken driver.
> > > > >>>
> > > > >>>if it's the double buffering, it means you're stuck.
> > maybe i will
> > > > >>>support it later, but that's no priority for me now.
> > > > >>>
> > > > >>>consider buying a camera with a philips chipset. they are a
> > > > >>>little more expensive, but it's worth it. it's decent
> > hardware,
> > > > >>>but more importantly, there's a good driver that supports its
> > > > >>>
> > > > >>>
> > > > >>special features.
> > > > >>
> > > > >>
> > > > >>>this driver is explicitly supported in pdp. the driver is
> > > > >>>
> > > > >>>
> > > > >>called 'pwc'
> > > > >>
> > > > >>
> > > > >>>and is in the kernel. the proprietary codec is supported in
> > > > >>>
> > > > >>>
> > > > >>the 'pwcx' module.
> > > > >>
> > > > >>
> > > > >>>they have built-in compression which makes it possible
> > to have a
> > > > >>>relatively high framerate for a webcam: 27fps at 320x240
> > > > >>>
> > > > >>>
> > > > >>compared to
> > > > >>
> > > > >>
> > > > >>>10 for the cheap ones. i don't know if there are any other
> > > > >>>driver/camera combinations that can do this.
> > > > >>>
> > > > >>>and no, i'm not payed by philips, but as far as i can
> > see, it's
> > > > >>>the only thing that really works well, despite the fact that
> > > > >>>there's non-open source part that makes it go that extra
> > > > >mile..>>
> > > > >>>see http://www.smcc.demon.nl/webcam/ for a list of cameras
> > > > >>>
> > > > >>>
> > > > >>supported
> > > > >>
> > > > >>
> > > > >>>by the pwc/pwcx driver.
> > > > >>>
> > > > >>>cheers,
> > > > >>>
> > > > >>>tom
> > > > >>>
> > > > >>>
> > > > >>>On Sun, 25 Jul 2004, jim ruxton wrote:
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>>I'm still trying to figure out why nothing is in the
> > > > >>>>
> > > > >>>>
> > > > >>video window.
> > > > >>
> > > > >>
> > > > >>>>Any thoughts where I should start to look.
> > > > >>>>Jim
> > > > >>>>
> > > > >>>>I thought I had succeeded but when I try to look for an
> > > > >>>>
> > > > >>>>
> > > > >>image in an
> > > > >>
> > > > >>
> > > > >>>>example patch (input_output.pd) I don't see it. Below is
> > > > >>>>
> > > > >>>>
> > > > >>what I get
> > > > >>
> > > > >>
> > > > >>>>in the terminal window after creating a window opening
> > > > >>>>
> > > > >>>>
> > > > >>pdp_v4l and
> > > > >>
> > > > >>
> > > > >>>>banging it once. I tried pdp_xv and pdp_glx with no luck.
> > > > >>>>
> > > > >>>>
> > > > >>I can see
> > > > >>
> > > > >>
> > > > >>>>the video with Gem and xawtv so I think video4linux
> > is ok. Any
> > > > >>>>thought where I should start to look for problems.
> > I'm using a
> > > > >>>>logitech usb based webcam.
> > > > >>>>Jim
> > > > >>>>Sample width set to 2 bytes
> > > > >>>>PDP: pure data packet
> > > > >>>>PDP: version 0.12.3
> > > > >>>>pdp_xvideo: grabbed port 61 on adaptor 0
> > > > >>>>pdp_v4l: opening /dev/video0
> > > > >>>>pdp_v4l: cap: name Logitech USB Camera type 513 channels
> > > > >>>>
> > > > >>>>
> > > > >>1 maxw 352
> > > > >>
> > > > >>
> > > > >>>>maxh
> > > > >>>>292 minw 32 minh 32
> > > > >>>>pdp_v4l: picture: brightness 32767 depth 24 palette 4
> > > > >>>>pdp_v4l: channel 0 name Camera type 2 flags 0
> > > > >>>>pdp_v4l: switched to channel 0
> > > > >>>>pdp_v4l: set norm to 0
> > > > >>>>pdp_v4l: buffer size 426240, frames 1, offset 0 0
> > > > >>>>pdp_v4l: using VIDEO_PALETTE_YUV422
> > > > >>>>pdp_v4l: frame 0 0, format 7, width 320, height 240
> > > > >>>>pdp_v4l: Opened video connection (320x240)
> > > > >>>>pdp_v4l: VIDIOCMCAPTURE: Invalid argument
> > > > >>>>pdp_v4l: VIDIOCMCAPTURE2: Invalid argument
> > > > >>>>pdp_v4l: frame 1 1, format 7, width 320, height 240
> > > > >>>>pdp_v4l: VIDIOCSYNC: Bad file descriptor
> > > > >>>>pdp_v4l: no device opened
> > > > >>>>pdp_v4l: attempting auto open
> > > > >>>>pdp_v4l: opening /dev/video0
> > > > >>>>pdp_v4l: cap: name Logitech USB Camera type 513 channels
> > > > >>>>
> > > > >>>>
> > > > >>1 maxw 352
> > > > >>
> > > > >>
> > > > >>>>maxh
> > > > >>>>292 minw 32 minh 32
> > > > >>>>pdp_v4l: picture: brightness 32767 depth 24 palette 4
> > > > >>>>pdp_v4l: channel 0 name Camera type 2 flags 0
> > > > >>>>pdp_v4l: switched to channel 0
> > > > >>>>pdp_v4l: set norm to 0
> > > > >>>>pdp_v4l: buffer size 426240, frames 1, offset 0 0
> > > > >>>>pdp_v4l: using VIDEO_PALETTE_YUV422
> > > > >>>>pdp_v4l: frame 0 0, format 7, width 320, height 240
> > > > >>>>pdp_v4l: Opened video connection (320x240)
> > > > >>>>pdp_v4l: VIDIOCMCAPTURE: Invalid argument
> > > > >>>>pdp_v4l: VIDIOCMCAPTURE2: Invalid argument
> > > > >>>>pdp_v4l: frame 1 1, format 7, width 320, height 240
> > > > >>>>pdp_v4l: VIDIOCSYNC: Bad file descriptor
> > > > >>>>pdp_v4l: auto open failed
> > > > >>>>
> > > > >>>>
> > > > >>>>
> > > > >>>
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