Re: [libdc1394-devel] Re: DMA capture always at least one frame behind ?!

[Martin M. <mar...@vi...>]

Hi,

I get the exact same situation with my app!

I am using version 0.9.4
DROP_FRAMES is set to 1
do_extra_buffering is set to 0

Martin

Johann Schoonees wrote:

> Sascha Lange wrote:
> >> ...
> >> When using libdc1394's dma capture
> >> facilities (blocking mode), we're observing the library to be always
> >> one image "late". Independently from the setting of the framerate
> >> (respectivly the frequency of dma_capture calls) one always gets the
> >> frame that should have been returned on the last call. If one inserted
> >> a delay of several seconds between two subsequent capture-calls, one
> >> would get an image, that is several seconds old.
>
> Sascha
>
> Something here is not right.  Which version of libdc1394 are you 
> using?  What is drop_frames set to?
>
> Johann
>