| Brian,
Thanks for all the good info. I hope that when you've got your article
mostly written, you'll send me a draft. I surely would appreciate a
tutorial. I've got a substantial learning curve ahead. All my GUI's so far
have been with FLTK, and recently, in Lettuce.
For my .csd testing ("porting") until now, I've found the combination of USB
keyboard and mouse, the nano editor, plus a thumb drive (for more extensive
edits on my Windows PC), quite workable. For *Python* development, no doubt
I'll be looking for additional resources.
Art Hunkins
----- Original Message -----
From: "Brian Redfern"
To:
Sent: Monday, January 12, 2009 11:42 PM
Subject: [Csnd] Re: Re: Re: sensekey and Linux/OLPC
> I'm writing an article for the upcoming csound journal on how to
> create simple activities with python, csndsugui and csound on olpc or
> any sugar, this would also work on a regular linux box running sugar
> as well. I run sugar on my desktop with fedora core 10, where its a
> download option for fedora. Its really tough to try to develop on the
> OLPC, its easier to emulate it with another machine and develop on a
> desktop and the copy the files down to the olpc.
>
> On Mon, Jan 12, 2009 at 7:25 PM, Art Hunkins wrote:
>> Brian,
>>
>> To your question: yes.
>>
>> As soon as I learn how to do it, I'll indeed be doing what you suggest.
>>
>> I have yet to get csndsugui going (or csound-editor for that matter), and
>> must get into Python from the bottom up.
>>
>> My goal is to write Activities with Python GUI. First, however, I must
>> scale
>> my csound CPU requirements to the possibilities of the OLPC. Right now,
>> the
>> ASCII keyboard activity is putting severe limitations on my plans. What
>> can
>> easily be done with MIDI sliders/knobs, is quite problematic using ASCII
>> (in
>> part, admittedly, because of all the additional data manipulation that
>> must
>> take place).
>>
>> I've already had to reduce my 16 voices to 8, and move from a SR=44100,
>> to
>> 32000. (For unknown reasons, this modest reduction in SR makes a *huge*
>> reduction in CPU usage. A followup email on this phenomenon will come
>> soon.)
>>
>> Art Hunkins
>>
>> ----- Original Message ----- From: "Brian Redfern"
>>
>> To:
>> Sent: Friday, January 09, 2009 1:31 AM
>> Subject: [Csnd] Re: sensekey and Linux/OLPC
>>
>>
>>> Is this when you're driving command line csound with the keyboard?
>>>
>>> You might have better results writing a python/csound activity using
>>> csndsugui library, I think you might have better latency results with
>>> keyboard commands using python/gtk instead of sending them on the
>>> command line.
>>>
>>>
>>>
>>> On Thu, Jan 8, 2009 at 8:22 PM, Art Hunkins wrote:
>>>>
>>>> I continue to have issues of extremely heavy CPU usage with ASCII
>>>> keyboard
>>>> input on the OLPC.
>>>>
>>>> In Windows, there is a *modest* CPU penalty incurred with keyboard
>>>> input
>>>> (via sensekey), but with Linux/OLPC it is major.
>>>>
>>>> Of course, the OLPC prints the sensekey input to the console, whereas
>>>> Windows does not, and this may well be part of the problem.
>>>>
>>>> Indeed if one watches CPU usage via top in Linux, you can see usage
>>>> jump
>>>> significantly (both overall and within Csound) with keyboard input.
>>>>
>>>> Can someone have a look at sensekey to determine:
>>>> 1) if there's any way of keeping it from printing to the terminal (in
>>>> Linux); 2) if there's any other way in which Linux overhead could be
>>>> minimized with ASCII input?
>>>>
>>>> The penalty is so bad that I may not be able to use sensekey messaging
>>>> with
>>>> the OLPC, but rather use only MIDI controllers - which require no such
>>>> overhead at all.
>>>>
>>>> Art Hunkins
>>>>
>>>>
>>>>
>>>> Send bugs reports to this list.
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>>>> csound"
>>>>
>>>
>>>
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>>
>>
>>
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>
>
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|