[libdc1394-devel] VIDEO1394_IOC_LISTEN_CHANNEL ioctl failed! and Bad images

[Martin P. <mar...@it...>]

Hello,
my name is Martin. I am working with 3 BCi4 6600 cameras, those cameras
are able to work with a resolution of 2208x3000 pixels. I made a capture
program available at http://www.geocities.com/cosmoperis/camera/main.c

When I set NUM_BUFFERS (number of DMA buffers) to a value greater than 5
the program dies like this:

(dc1394_capture.c) VIDEO1394_IOC_LISTEN_CHANNEL ioctl failed!
Libdc1394 error (dc1394_capture.c:dc1394_capture_setup_dma:382): Capture
is not set : Could not setup DMA capture

And dmesg says: 

[17723533.496000] video1394_0: Iso receive DMA: 8 buffers of size
6627328 allocated for a frame size 6624000, each with 1619 prgs
[17723533.516000] video1394_0: iso context 0 listen on channel 1
[17723533.712000] ieee1394: Node [1-01:1023] wants to release broadcast
channel 31.  Ignoring.
[17723534.448000] video1394_1: mask: 0000000000000004 usage:
0000000000000000
[17723534.448000]
[17723534.508000] video1394_1: Iso receive DMA: 8 buffers of size
6627328 allocated for a frame size 6624000, each with 1619 prgs
[17723534.532000] video1394_1: iso context 0 listen on channel 2
[17723534.728000] ieee1394: Node [2-01:1023] wants to release broadcast
channel 31.  Ignoring.
[17723535.464000] video1394_2: mask: 0000000000000008 usage:
0000000000000000
[17723535.464000]
[17723535.464000] printk: 11 messages suppressed.
[17723535.464000] allocation failed: out of vmalloc space - use
vmalloc=<size> to increase size.
[17723535.464000] dma_region_alloc: vmalloc_32() failed
[17723535.464000] video1394_2: Failed to allocate dma buffer
[17723535.464000] video1394_2: Couldn't allocate ir context
[17723535.668000] video1394_0: On release: Iso receive context 0 stop
listening on channel 1
[17723535.676000] video1394_1: On release: Iso receive context 0 stop
listening on channel 2

In another computer with the same kernel  Linux 2.6.15-27-686 #1 SMP
PREEMPT Sat Sep 16 02:13:27 UTC 2006 i686 GNU/Linux I can set
NUM_BUFFERS to a greater value without problems.

I supose it is a matter of configuration, if I allocate memory for 6
dma_buffers * 3 cameras * 6,6Mpixels = 120 Mbytes of memory, may be it
is the limit configured on this machine?? I don't know, any idea??

When I set NUM_BUFFERS to 5 the thing works, but some times I get the
new images with some kind of weird offset to the right respect the
preceding image. To ilustrate this anyone can download a tgz file with
some images captured with the camera when the the thing goes wrong here
http://www.megaupload.com/?d=69X8TE36


Any clues?

Thank you very much!
And Happy New Year to everybody!