Re: [chuck-users] Strange Behavior

13 Apr 2007

      I'll keep sending the dumps to your e-mail to no bother everyone with
garbage. I'll keep digging on what it might be, as i try some code, I think
the right way is to see where is the native GTK Port, there should be on
ready by know and do it in some widget interface that is very skinnable to
make it very beauty to the people's eyes.

I'm really not handy with cocoa interface and even objective C, i'm a Unix
code and really don't understand Mac OS X interfaces yet, as i've bought my
first Mac only when they come to the X86 arch.
I'm reading a lot of stuff about how the internals in kernel works, as my
first self assigned learning job of this architecture is build a driver or
just a wrapper to the bcd2000 onboard sound card (its always easiest to
understand everything from the beginning for me).

It seems as a highly object oriented architecture so i it might be easy to
get how the things work, your machine will be just what i'm needing is my
main study will focus on haptic interfaces for sound generation.

See ya

Piero

2007/4/13, Spencer Salazar :
...
Howdy,
On Apr 13, 2007, at 8:14 AM, Piero B. Contezini wrote:
...
Hello,
this is not what i meant with the code but as i'm not testing the
audio gens its all right, all i'm doing is see the MAUI changes
with midi input.
Yesterday i´ve seen the .onChange trigger that´s what I was trying
to do with the .value function.
Yes-- in fact, .onChange is redundant:
knob_0.onChange() => now;
is the same as
knob_0 => now;
but either method is fully supported.
...
I was trying to compile miniAudicle yesterday and it doesnt go all
right, there is any libs I must install before I can build it ?
You shouldn't need any libs.  It looks like there is an error in
makefile.osx... argh.  If you delete the '#' character on line 144 of
that file, it should work.  'make osx-ub' doesn't have this same
error, so that will work, but it will produce a universal binary.
So, Ill fix the source distro online also when I get a chance...
...
I was thinking on try a little change on the MAUI API for
supporting some kind of really knob like widgets (a ball with a
mark at the 0 point that rotates itself from 0 to 127 or something
like this) because my application will fit all of the screen just
with the knob states if I use that rule as the marker.
OS X has a circular knob user interface widget that we were planning
on supporting.  This knob uses the same Objective-C class as the
slider, so if you're handy with Cocoa you could pretty easily switch
the sliders over to knobs.
...
Another thing I think is missing is a onscreen file manager to map
my turntable and select samples from the midi controller, did you
ever think on using GTK for this? because it support skins from
itself (I dont know if cocoa can do this but i havent seen any Mac
OS X apps with too much skin support) I thought it could be nice to
make really good looking skins for any kind of chuck based machine.
Yes! the user interface element API definitely needs a lot of
expansion--multisliders, file selection dialogs, menus, text fields,
etc., are all planned, but unfortunately there are only so many hours
in the day...  Skinnability would be cool, but I don't think it would
be easy to combine GTK and Cocoa code bases on OS X.  Also, GTK on OS
X requires X11, which unfortunately is kind of a second-class citizen
on OS X, and isn't installed by default.  It is possible to compile
the wxGTK version of miniAudicle on OS X though--if thats something
that might be a step in the right direction, let me know.  Its pretty
easy if you already have GTK and wxGTK.
...
I´ll send you more crash reports, there is something odd with the
crashes, they don´t seem to hang on the same function, maybe its a
little overflow the bcd is causing on the midi routines.
Hmm, yeah, keep 'em coming!  Do you have any idea what kind of actual
MIDI messages the BCD is sending?
thanks!
spencer
...
Thanks for your time
Piero
2007/4/13, Spencer Salazar : Hi Piero,
Thanks for your feedback on this.  I've been looking into your crash
report from earlier and while I can see where the crash is occurring,
I can't quite figure out why it is occurring.  So I don't really have
anything helpful to say at the moment, except that Im looking a
little deeper into ChucK's MIDI implementation.
Also, while it doesn't explain the crashing, this code of yours seems
a little suspect:
...
public void Distortion() {
    while(knob_0.value()) {
            knob_0.value() => float value;
        value * 39 => f.pfreq;
//            value => i.next;
    }
    min => now;
}
As far as I can tell, this will hang all audio processing until
knob_0.value() is 0--is that the desired result?
spencer
On Apr 12, 2007, at 9:46 PM, Piero B. Contezini wrote:
...
Hello,
I don't know if this is the right place to put this on but, this
code is crashing randomly on my tests:
MAUI_View window;
MAUI_Slider knob_0;
window.size(300,300);
window.name("Test");
window.position(0,100);
knob_0.range(0,127);
knob_0.size(150,knob_0.height());
//cut_knob_0.position(0,0);
knob_0.name("Knob 0");
knob_0.displayFormat(MAUI_Slider.integerFormat);
// impulse to filter to dac
Impulse i => BiQuad f => Pan2 p => dac;
// set the filter's pole radius
.99 => f.prad;
// set equal gain zeros
1 => f.eqzs;
// set filter gain
.5 => f.gain;
window.addElement (knob_0);
window.display();
1 => int device;
MidiIn min;
MidiMsg msg;
if( !min.open( device ) ) {
        <<< "erro ao iniciar device:" , device >>> ;
} else {
        <<< "device inicializado:" , min.num() , " -> " , min.name
() >>>;
}
public void controlKnob_0() {
    while(true) {
        while ( min.recv(msg) ) {
                msg.data1 => int msg_1;
                msg.data2 => int msg_2;
                msg.data3 => int msg_3;
if(msg_2 == 3) {
                        knob_0.value(msg_3);
                }
        }
        min => now;
    }
}
public void Distortion() {
    while(knob_0.value()) {
            knob_0.value() => float value;
        value * 39 => f.pfreq;
//            value => i.next;
    }
    min => now;
}
spork ~ controlKnob_0();
spork ~ Distortion();
while ( true ) {
    1.0 => i.next;
//    Std.rand2f ( 250, 5000 ) => f.pfreq;
    Std.rand2f( -1, 1 ) => p.pan;
    100::ms => now;
}
What i'm doing is mapping one knob of my bcd2000 to a MAUI Slider,
to see on the screen the position of the knob, as i've posted here
before, the midi itself is hanging up using this controller, but I
think it might be something i'm doing wrong, anyone can point me
out a clue on what could be it?
Thanks
Piero
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