2011/11/15 Matthias Kronlachner <m.kronlachner@student.tugraz.at>

hi!

Am 14.11.11 19:19, schrieb tim vets:

2011/11/14 Budi Prakosa <iyok@deadmediafm.org>

hi tim, have you try the latest version of pix_freenect by matthias?

Hi Budi and list,

I tried pix_freenect.pd_linux, but unfortunately: "pix_freenect: can't load library" 

No idea why...

I'm running GEM: ver: 0.92.3. Is v0.93 a requirement maybe?

gem v0.93 is needed!
but there is a binary available now anyway so you don't have to get yourself in trouble compiling it for osx on your own.

there was a problem with the path settings in the dylibs. try it again, i hope it's working now.

Has the Linux version been updated as well?

trying the binary from http://www.matthiaskronlachner.com/wp-content/uploads/2011/11/pix_freenect_0.03.zip

with the following setup now:

GEM ver: 0.93.3

compiled: Nov 11 2011

0.43.1-extended-20111114

Ubuntu 11.04 (so not 11.10, problem?)

/usr/lib/pd-extended/extra/pix_freenect.pd_linux: can't load library

gr,

Tim

I also tried compiling pix_freenect myself, but got stuck at:

"In file included from pix_freenect.cc:23:0:

pix_freenect.h:38:31: fatal error: libfreenect-audio.h: No such file or directory

compilation terminated."

pix_freenect readme says: "get and install latest libfreenect from https://github.com/OpenKinect/libfreenect (compile with Audio support!)"

libfreenect readme says: "Audio is currently being worked on."

yes, audio is being worked on by the libfreenect team, but in the latest version from git it is included and ready for use.
i didn't have enough time to test audio under osx so it won't be included when building pix_freenect for osx. (it was quite unstable when i tried it)
now it won't search for libfreenect-audio.h while compiling for osx.

for audio i think i will divide the external into two anyway.
one for video, one for audio. i will have to check it out if it's working simultaneously for one kinect then.

matthias

gr,

Tim

On Mon, Nov 14, 2011 at 10:53 PM, Mathieu Bouchard <matju@artengine.ca> wrote:
> Le 2011-11-14 à 14:44:00, tim vets a écrit :
>
>> Attached is the output of "valgrind --leak-check=full pdextended" and
>> opening fux_kinect-help.pd.
>
> I think that you better not add --leak-check when just looking for a crash.
> But the only problem it does, is make the log file bigger.
>
> Here's what I found (summarising the important error messages) :
>
> Invalid write of size 1 at convert_bayer_to_rgb (in libfreenect) by [...] by
> libusb_handle_events_timeout (in libusb). Address 0xa066360 is [between 0
> and 5] bytes after a block of size 307,200 alloc'd
>
> This means that when libusb gives libfreenect the RGGB buffer and
> libfreenect is converting it to plain RGB, it makes a mistake and writes 6
> bytes more than just 640*480 pixels, as if there were 2 extra pixels at the
> end. But I think that this is a bit misleading. It looks as if Valgrind was
> skipping a lot of other errors (probably by not able to detect them). Read
> on.
>
> Then there is invalid write of size 1 from the same place but « Address is
> 749 bytes inside a block of size 12,800 free'd ». This doesn't look like any
> malloc that we know about. The number of bytes does not ring a bell either.
> But then it says that the memory was freed by request of
> /usr/lib/nvidia-current/libGL.so.270.41.06, which is a part of your video
> driver. (???)
>
> But I just looked at how convert_bayer_to_rgb is written, and it doesn't
> look like it writes to more than one buffer. This function only writes 480
> rows of 640 columns. But note that it writes RGB values, three bytes per
> pixel. That means you need a malloc(640*480*3) for each of the three RGB
> buffers in fux_kinect.
>
>  ______________________________________________________________________
> | Mathieu BOUCHARD ----- téléphone : +1.514.383.3801 ----- Montréal, QC

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--
Budi Prakosa
house of natural fiber (HONF)
yogyakarta new media art laboratory
wora wari A80/6 baciro yogyakarta indonesia
http://www.natural-fiber.com

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