Re: [libdc1394-devel] two applications accessing one camera

[Damien D. <da...@do...>]

Salut Andy,

On Thu, 2006-03-30 at 14:35 +0200, Andy Gotz wrote:
> Hi,
> 
> is it possible to have two applications reading images from the same 
> camera using libdc1394? I would like to have coriander running 
> simultaneously with my application. I haven't looked into this problem 
> but was wondering if someone has tried it yet? If so can they both 
> control the features of the camera?

Short answer: no, it is not possible. Only one program at a time can get
the images. However you have a few tricks available to use the images
within several programs:
- use the "export to stdout" saving format in coriander. Then your app
can read the images from stdin.
- design your app with a V4L input (coriander can output to V4L)
- create a new SHM service (probably the most elegant and efficient way)

Damien

-- 
  _    Damien 'Takahara' Douxchamps, PhD
 ('-   Post-doctoral investigator
 //\   Image Processing Group, NAIST
 V_/_  http://chihara.aist-nara.ac.jp/