[ros-users] Bad performances with cameradc1394

Shadow sacha at shadowrobot.com
Wed May 12 10:04:56 UTC 2010

I am trying the camera1394 driver right now to see if the same problem
occurs, but I can not manage to display the frame with that driver using
opencv, like it was easy to do with cameradc.

I am using the latest Ubuntu with kernel 2.6.32-22, and here is my
firewire card :
00:08.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire
II(M)] IEEE 1394 OHCI Controller (rev c0)
00:09.0 FireWire (IEEE 1394): NEC Corporation uPD72874 IEEE1394 OHCI 1.1
3-port PHY-Link Ctrlr (rev 01)

If there is any integrated solution to display the stream, let me know,
since the problem only occurs when it is displayed.


Le mardi 11 mai 2010 à 11:59 -0500, Jack O'Quin a écrit :
> On Tue, May 11, 2010 at 11:31 AM, Eric Perko <wisesage5001 at gmail.com> wrote:
> > Sacha,
> >
> > Have you seen the same behavior with the newer camera1394
> > (http://www.ros.org/wiki/camera1394) driver or is this just the
> > cameradc1394 driver?
> If the problem appears with both drivers (likely IMHO), you are
> probably not getting DMA access due to some difficulty in your
> low-level library or kernel drivers.
> What distribution, kernel and firewire card are you running?

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