jamie

I'm writing an external that uses newinstance() to dynamically

instantiate some abstractions, and I have a few questions:

1. Do objects instantiated with newinstance() have a patcher, and if so

2. DSP abstractions instantiated wiht newinstance() don't seem to get

the "dsp" message, i.e. they don't get added to the DSP graph. Maybe

this is related to the fact that they aren't bound to a patcher?

I'm writing an external that uses newinstance() to dynamically
instantiate some abstractions, and I have a few questions:

1. Do objects instantiated with newinstance() have a patcher, and if so
what symbol is it bound to?

2. DSP abstractions instantiated wiht newinstance() don't seem to get
the "dsp" message, i.e. they don't get added to the DSP graph. Maybe
this is related to the fact that they aren't bound to a patcher?

newinstance

Quote: jamie wrote on Tue, 22 May 2007 03:14

----------------------------------------------------

> 1. Do objects instantiated with newinstance() have a patcher, and 

I'm interested in the answer to this too. I'd like to instantiate a js object and have that traverse the patcher heirarchy from inside a poly. It's certainly instantiating and responding to messages from my max object, but the js claims "this.patcher has no properties". Rats.

Quote: jamie wrote on Tue, 22 May 2007 03:14
----------------------------------------------------
> 1. Do objects instantiated with newinstance() have a patcher, and 
> if so what symbol is it bound to?

I'm interested in the answer to this too. I'd like to instantiate a js object and have that traverse the patcher heirarchy from inside a poly. It's certainly instantiating and responding to messages from my max object, but the js claims "this.patcher has no properties". Rats.


Yes, of course, that code successfully creates a new instance of the

buffer~ object, but the technique only works for Max/MSP _objects_. If you

newinstance() to instantiate an _abstraction_ the abstraction doesn't get

added to the DSP graph, and this is what I am trying to do.

On Mon, 2007-11-26 at 20:43 -0800, Brandon Nickell wrote:

What are the parameters that you're passing into newinstance() look like?

> void *mspobj = newinstance(gensym("buffer~"), 0, 0);

> post("newinstance() successful: %d", &mspobj);

> mess2(mspobj, gensym("read"), bar, baz); //test message to

> post("newinstance() failed (return 0)");

> freeobject(mspobj); //clean up small test

> On Nov 26, 2007 9:03 AM, Jamie Bullock wrote:

> On Sat, 2007-11-24 at 12:08 -0800, Brandon Nickell wrote: [snip]

> > dsp_setup() really does a lot of the work here for

> > recommend going through Chapter 15 of the MSP Development part

> > Writing Externals documentation as it disscusses how writing a

> > MSP external works--the interface is pretty simple.

> I think you might have misunderstood my question, I am looking

> instantiate an abstraction that contains MSP objects from a

> an external. I think the code you provided relates to writing an

> external, something I am sadly already familiar with.

Yes, of course, that code successfully creates a new instance of the
buffer~ object, but the technique only works for Max/MSP _objects_. If you
use
newinstance() to instantiate an _abstraction_ the abstraction doesn't get
added to the DSP graph, and this is what I am trying to do.

On Mon, 2007-11-26 at 20:43 -0800, Brandon Nickell wrote:
What are the parameters that you're passing into newinstance() look like?
>
> void foo()
> {
>    void *mspobj = newinstance(gensym("buffer~"), 0, 0);
>    void *bar, *baz;
>    if(mspobj) {
>        post("newinstance() successful: %d", &mspobj);
>        mess2(mspobj, gensym("read"), bar, baz); //test message to
buffer~
>    }
>    else
>        post("newinstance() failed (return 0)");
>
>    freeobject(mspobj);  //clean up small test
> }
>
> Thanks,
> Brandon.
>
> On Nov 26, 2007 9:03 AM, Jamie Bullock  wrote:
>
>         Hi Brandon,
>
>         Thanks for the quick reply.
>
>         On Sat, 2007-11-24 at 12:08 -0800, Brandon Nickell wrote: [snip]
>         > dsp_setup() really does a lot of the work here for
initialization. I
>         > recommend going through Chapter 15 of the MSP Development part
of the
>         > Writing Externals documentation as it disscusses how writing a
basic
>         > MSP external works--the interface is pretty simple.
>
>
>         I think you might have misunderstood my question, I am looking
to
>         instantiate an abstraction that contains MSP objects from a
function in
>         an external. I think the code you provided relates to writing an
MSP
>         external, something I am sadly already familiar with.
>
>
>         Jamie
>
>         --
>         www.postlude.co.uk
>
>
>
> --
www.postlude.co.uk

Quote: jamie wrote on Mon, 21 May 2007 09:14

> 2. DSP abstractions instantiated wiht newinstance() don't seem to get

> the "dsp" message, i.e. they don't get added to the DSP graph. Maybe

> this is related to the fact that they aren't bound to a patcher?

Abstractions are bound to a patcher - the top level of the abstraction is the patcher (that is what is returned by newinstance()). Personally I would use fileload, stringload() or intload (which allows arguments) as they are actually intended for loading patches rather than objects, but it seems in fact that it makes little difference which you use. The problem is that if the patcher window is not open when the dsp stuff is called MAx doesn't see it because it's treated differently from a top-level patcher the user has opened. If the window is open when dsp is called then it will get added...

Quote: jamie wrote on Mon, 21 May 2007 09:14
----------------------------------------------------

> 2. DSP abstractions instantiated wiht newinstance() don't seem to get
> the "dsp" message, i.e. they don't get added to the DSP graph. Maybe
> this is related to the fact that they aren't bound to a patcher? 

Abstractions are bound to a patcher - the top level of the abstraction is the patcher (that is what is returned by newinstance()). Personally  I would use fileload, stringload() or intload (which allows arguments) as they are actually intended for loading patches rather than objects, but it seems in fact that it makes little difference which you use. The problem is that if the patcher window is not open when the dsp stuff is called MAx doesn't see it because it's treated differently from a top-level patcher the user has opened. If the window is open when dsp is called then it will get added...

Yeah I was using that as an example as part of my question to you. If you're

just looking to load in an abstraction and add it to the dsp graph you can

void bar() {stringload(" mymsppatch.pat"); /*looks for it in your max search

On Nov 28, 2007 8:33 AM, Jamie Bullock wrote:

> Yes, of course, that code successfully creates a new instance of the

> buffer~ object, but the technique only works for Max/MSP _objects_. If you

> newinstance() to instantiate an _abstraction_ the abstraction doesn't get

> added to the DSP graph, and this is what I am trying to do.

> On Mon, 2007-11-26 at 20:43 -0800, Brandon Nickell wrote:

> What are the parameters that you're passing into newinstance() look like?

> > void *mspobj = newinstance(gensym("buffer~"), 0, 0);

> > post("newinstance() successful: %d", &mspobj);

> > mess2(mspobj, gensym("read"), bar, baz); //test message to

> > post("newinstance() failed (return 0)");

> > freeobject(mspobj); //clean up small test

> > On Nov 26, 2007 9:03 AM, Jamie Bullock wrote:

> > On Sat, 2007-11-24 at 12:08 -0800, Brandon Nickell wrote: [snip]

> > > dsp_setup() really does a lot of the work here for

> > > recommend going through Chapter 15 of the MSP Development part

> > > Writing Externals documentation as it disscusses how writing a

> > > MSP external works--the interface is pretty simple.

> > I think you might have misunderstood my question, I am looking

> > instantiate an abstraction that contains MSP objects from a

Yeah I was using that as an example as part of my question to you. If you're
just looking to load in an abstraction and add it to the dsp graph you can
do so in one line invoking stringload:

void bar() {stringload(" mymsppatch.pat"); /*looks for it in your max search
path */ }

On Nov 28, 2007 8:33 AM, Jamie Bullock  wrote:

>
> Yes, of course, that code successfully creates a new instance of the
> buffer~ object, but the technique only works for Max/MSP _objects_. If you
> use
> newinstance() to instantiate an _abstraction_ the abstraction doesn't get
> added to the DSP graph, and this is what I am trying to do.
>
> Jamie
>
> On Mon, 2007-11-26 at 20:43 -0800, Brandon Nickell wrote:
> What are the parameters that you're passing into newinstance() look like?
> >
> > void foo()
> > {
> >    void *mspobj = newinstance(gensym("buffer~"), 0, 0);
> >    void *bar, *baz;
> >    if(mspobj) {
> >        post("newinstance() successful: %d", &mspobj);
> >        mess2(mspobj, gensym("read"), bar, baz); //test message to
> buffer~
> >    }
> >    else
> >        post("newinstance() failed (return 0)");
> >
> >    freeobject(mspobj);  //clean up small test
> > }
> >
> > Thanks,
> > Brandon.
> >
> > On Nov 26, 2007 9:03 AM, Jamie Bullock  wrote:
> >
> >         Hi Brandon,
> >
> >         Thanks for the quick reply.
> >
> >         On Sat, 2007-11-24 at 12:08 -0800, Brandon Nickell wrote: [snip]
> >         > dsp_setup() really does a lot of the work here for
> initialization. I
> >         > recommend going through Chapter 15 of the MSP Development part
> of the
> >         > Writing Externals documentation as it disscusses how writing a
> basic
> >         > MSP external works--the interface is pretty simple.
> >
> >
> >         I think you might have misunderstood my question, I am looking
> to
> >         instantiate an abstraction that contains MSP objects from a
> function in
> >         an external. I think the code you provided relates to writing an
> MSP
> >         external, something I am sadly already familiar with.
> >
> >
> >         Jamie
> >
> >         --
> >         www.postlude.co.uk
> >
> >
> >
> > --
> www.postlude.co.uk
>
>
>
>
>

Thanks for your patience with this. I tried the stringload() approach,

and indeed, it does work, but unfortunately it does so by bringing the

abstractions to the 'front', which is unsuitable for my application.

I tried hiding the windows immediately like this:

t_wind *inst_wind = (t_wind*) inst->p_wind;

But unfortunately this doesn't work. The abstractions are still

accessible via messaging, but don't generate any audio. If I put inside

I can start the DSP for each abstraction via a message to a receive

object, and get audio, but when the audio for each abstraction becomes

'active', DSP for all other patchers is stopped!

>From what you and Alex have said I can make one of two conclusions:

1. What I want to do is simply not supported.

2. The functions fileload(), stringload(), newinstance() etc. are buggy

in that they don't correctly support abstractions containing MSP

On Wed, 2007-11-28 at 19:55 -0800, Brandon Nickell wrote:

> Yeah I was using that as an example as part of my question to you. If

> you're just looking to load in an abstraction and add it to the dsp

> graph you can do so in one line invoking stringload:

> void bar() {stringload(" mymsppatch.pat"); /*looks for it in your max

Thanks for your patience with this. I tried the stringload() approach,
and indeed, it does work, but unfortunately it does so by bringing the
abstractions to the 'front', which is unsuitable for my application.

inst = stringload(namestr);
t_wind *inst_wind = (t_wind*) inst->p_wind;
syswindow_hide(wind_syswind(inst_wind));

But unfortunately this doesn't work. The abstractions are still
accessible via messaging, but don't generate any audio. If I put inside
the abstractions:

I can start the DSP for each abstraction via a message to a receive
object, and get audio, but when the audio for each abstraction becomes
'active', DSP for all other patchers is stopped!

1. What I want to do is simply not supported.
or
2. The functions fileload(), stringload(), newinstance() etc. are buggy
in that they don't correctly support abstractions containing MSP
objects.

On Wed, 2007-11-28 at 19:55 -0800, Brandon Nickell wrote:
> Yeah I was using that as an example as part of my question to you. If
> you're just looking to load in an abstraction and add it to the dsp
> graph you can do so in one line invoking stringload:
>
> void bar() {stringload(" mymsppatch.pat"); /*looks for it in your max
> search path */ }
>