Hi,
On 11-Jun-01 lpf wrote:
> Hi!
>
> I have a webcam Philips ToUCam Pro (USB), and linux kernel 2.4.5.
> I've compiled the kernel with
> support for the webcam and it seems to be well detected by the kernel
> but when I run xawtv-3.34 I
> get the following error:
>
> This is xawtv-3.34, running on Linux/i686 (2.4.5)
> visual: id=0x24 class=4 (TrueColor), depth=16
> visual: id=0x25 class=4 (TrueColor), depth=16
> visual: id=0x26 class=5 (DirectColor), depth=16
> visual: id=0x27 class=5 (DirectColor), depth=16
> x11: 1024x768, 16 bit/pixel, 2048 byte/scanline, DGA
> /dev/video0: no overlay support
> v4l-conf had some trouble, trying to continue anyway
> ioctl:
> VIDIOCGAUDIO(0,,flags=0x0,vol=0,balance=0,bass=0,treble=0,mode=0x0,step=0):
> Invalid argument
> wmhooks: gnome
> ioctl:
> VIDIOCGAUDIO(0,,flags=0x0,vol=0,balance=0,bass=0,treble=0,mode=0x0,step=0):
> Invalid argument
> ioctl:
> VIDIOCGAUDIO(0,,flags=0x0,vol=0,balance=0,bass=0,treble=0,mode=0x0,step=0):
> Invalid argument
> ioctl:
> VIDIOCSAUDIO(0,,flags=0x0,vol=0,balance=0,bass=0,treble=0,mode=0x0,step=0):
> Invalid argument
> ioctl:
> VIDIOCGAUDIO(0,,flags=0x0,vol=0,balance=0,bass=0,treble=0,mode=0x0,step=0):
> Invalid argument
> ioctl: VIDIOCMCAPTURE(0,fmt=0,size=0x0): Device or resource busy
This is clearly a programming error; fmt 0 is undefined, and a size 0x0 is
certainly not possible.
> ioctl: VIDIOCMCAPTURE(0,fmt=3,size=64x48): Invalid argument
Well, I think it tries to probe a palette that matches your display depth
(RGB565), which the driver doesn´t have (and never did). Also, this points
out another error in xawtv: it uses a very small image size to probe the
available palettes, disregarding the minimum size as returned by GCAP. In
fact, in my driver I have to specifically work around this :( It should use
the minimum size.
> ioctl:
> VIDIOCGAUDIO(0,,flags=0x0,vol=0,balance=0,bass=0,treble=0,mode=0x0,step=0):
> Invalid argument
> ioctl:
> VIDIOCSAUDIO(0,,flags=0x1,vol=0,balance=0,bass=0,treble=0,mode=0x0,step=0):
> Invalid argument
The webcam does not have VIDIOCGAUDIO/VIDIOCSAUDIO calls yet. They will be
added sometime.
> It seems like there's a problem between video4linux and the webcam USB
> driver, but I can't figure it out.
No, there´s a problem between xawtv and the video4linux interface, now. It
used to work.
- Nemosoft
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