[Gridflow-dev] problems with videodev

[Alexandre Castonguay]

I tested a new card (with xawtv) and gf crashes immediately if I switch to
'transfer read'. I think that's not an option for bttv anyway.  These
problems look like the ones we had last month with videodev. The following
modules are all loaded :

v4l2_common
videodev
bttv

Cheers,

Alexandre

> Hi folks,
>
> We're setting up gf on a new machine and videodev produces these errors.
> It seems that for one thing, 'mmap' is enabled by default?  The default
> 'bttv' button in the last version of [#camera] was helpful, why was it
> removed?
>
> Cheers,
>
> Alexandre
>
> kubuntu edgy 6.10
> amd x2
>
>
> [VideoCapability] name=BT878 video ( *** UN type:CAPTURE | TUNER | OVERLAY
> | CLIPPING | SCALES channels=4 audios=1 maxsize=(480 768) minsize=(32 48)
> [VideoPicture] brightness=32768 hue=32768 contrast=33791 whiteness=0
> depth=24 palette=RGB24\;
> palette 4 supported
> [VideoChannel] channel=0 name=Television tuners=1 flags:TUNER | AUDIO
> type=0x0001 norm=1
> [VideoTuner] tuner=0 name=Television rangelow=0 rangehigh=2147483647
> flags:PAL | NTSC | SECAM mode=NTSC\; signal=65535
> error: ioctl VIDIOCPWCGAWBSPEED: Invalid argument
> error: ioctl VIDIOCPWCGAWBSPEED: Invalid argument
> error: ioctl VIDIOCPWCGAWB: Invalid argument
> error: ioctl VIDIOCPWCGAWB: Invalid argument
> error: ioctl VIDIOCPWCGAWB: Invalid argument
> error: ArgumentError: mmap: Invalid argument
> format/videodev.c.fcs:321:in `void FormatVideoDev::alloc_image(int,
> Ruby*)'
> /usr/local/lib/pd/extra/gridflow/format/main.rb:216:in `alloc_image'
> /usr/local/lib/pd/extra/gridflow/format/main.rb:216:in `_0_bang'
> ... you might be able to track this down from the Find menu.
>
> (bang [#camera]) :
> error: ArgumentError: mmap: Invalid argument
> format/videodev.c.fcs:321:in `void FormatVideoDev::alloc_image(int,
> Ruby*)'
> /usr/local/lib/pd/extra/gridflow/format/main.rb:216:in `alloc_image'
> /usr/local/lib/pd/extra/gridflow/format/main.rb:216:in `_0_bang'
>
> (select 'transfer read') :
> transfer read
> error: ArgumentError: error reading: Input/output error
> format/videodev.c.fcs:457:in `void FormatVideoDev::frame(int, Ruby*)'
> /usr/local/lib/pd/extra/gridflow/format/main.rb:216:in
> `GridFlow::FormatVideoDev#frame'
> /usr/local/lib/pd/extra/gridflow/format/main.rb:216:in `_0_bang'
>
>
>
>
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