Re: [libdc1394-devel] dc1394_capture.c mmap failed

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

On Wed, 2006-01-18 at 19:28 +0100, Mario Cervetto wrote:
> Hello all!
> 
>     I am using libdc1394 version 2 to grab some image
>     from a pixelink A741 camera, but I get the following error 
>     when I try to capture a frame (I am using the DMA functions):
> 
>         (dc1394_capture.c) mmap failed!
>         Libdc1394 error
> (dc1394_capture.c:dc1394_dma_setup_capture:469): Generic failure :
> Could not setup DMA capture
> 
>     Does anyone has any hint to solve this problem?
>     Many thanks in advance!

It may happen if the ring buffer that you try to allocate is too large.
How many frames do you have in the ring buffer and what is their size?

Damien

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