Hi,
I think I've found what triggers the problem (and avoiding it I can get
things to work fine).
It seems to happen when these things happen in this order:
- The [gemhead] driving the [pix_snap] and [pix_record] is disabled
(via a 0 message) _before_ the gemwin is created (for example, at loadbang)
- After creating the gemwin, the gemhead is not enabled until _just
before_ the "record 1" and "auto 1" messages are sent to [pix_record].
That is, the following sequence of actions, that should be perfectly
legal, leads to malfunctioning:
i) disabling the gemhead driving pix_snap and pix_record
(some time passes)
ii) creating the gemwin
(some time passes)
iii) filename is given to pix_record
(some time passes)
iv) the following is done in 0 logical time:
iv.1) enabling the gemhead
iv.2) "record 1" message to pix_record
iv.3) "auto 1" message to pix_record
This can lead to either of two malfunctioning and unrecoverable situations:
A) immediate crash
B) pix_record outputs some error messages and does not record;
The pix_record will never recover. Even if you do a sequence of
steps that would normally lead to good functioning (e.g.:
destroy/recreate the gemwin, enabling the gemhead, repeating steps iii,
iv.2 and iv.3 in non-zero time), it won't work any more.
I wouldn't expect this to cause any problem; at the very least,
pix_record should:
- never crash
- give a meaningful error message if the situation presented is actually
illegal for some reason
- recover and work correctly when "normality" is reestablished
Well all this is basically a bug report so I will file it to the bug
tracker. I just thoght I'd let you know that I had found the workaround;
then while writing it came out as if i was filing a bug report...
Also, if anybody can confirm the issue on other platforms beside windows
and/or explain why this behaviour should be expected (except the crashes
of course), that would be helpful.
thanks
m.
news@petervenus.de escribió:
Hello
I am working with [pix_snap] and its running quite good.
In the attachment you will find a test-patch i build out of help-files.
While playing around with [pix_snap]i noticed, that its quite important,
to have different gemheads for the parts where you do something
to the source-signal and the part of the patch where you record the video.
like having [gemhead 5] for the first, and [gemhead 55] for the snapping part.
that way the first part gets handled before the image is snapped.
hope that helps.
Peter
-----Ursprüngliche Nachricht-----
Von: Matteo Sisti Sette
Gesendet: 21.03.2010 13:23:16
An: Jaime Oliver
Betreff: Re: [PD] pix_snap + pix_record = problem
Jaime Oliver escribió:
I had a similar error in osx10.6.
Did you find a workaround? Could you ever record a sequence of snapped
pixes into a video file?
thanks
m.
--
Matteo Sisti Sette
matteosistisette@gmail.com
http://www.matteosistisette.com
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#X msg 468 167 snap;
#X obj 458 134 t a b;
#X obj 458 112 gemhead 99;
#X obj 458 86 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
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#X obj 553 224 cnv 15 167 200 empty empty empty 20 12 0 14 -24198 -66577
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#X obj 553 404 pix_record;
#X obj 572 373 cnv 15 145 25 empty empty empty 20 12 0 14 -225271 -66577
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#X msg 582 377 bang;
#X msg 654 377 auto $1;
#X obj 635 378 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
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#X connect 3 0 4 0;
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#X text 389 27 //1: click here;
#X obj 447 203 pix_snap 512 512;
#X text 287 66 //2: here;
#X text 123 56 //3: click here;
#X text 795 276 //4: click here;
#X text 751 24 //5: click here;
#X text 96 519 //STEPS TO REPRODUCE (follow strictly);
#X text 120 535 //1: click the 0 message to the gemhead;
#X text 124 552 //2: create the gemwin;
#X text 128 567 //3: the big bang to select input file;
#X text 130 585 //4: the "save as" red bang;
#X text 130 601 //5: click to set the big toggle;
#X msg 565 325 file;
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