Hi All,

I was experimenting with getting audio and midi device lists from Csound through the API (both Python and Java via Clojure). I'm not sure it's really possible to use it from outside C/C++.  Could someone tell me if this is correct?  

If so, I'm wondering if we should add methods to csound.hpp doing the appropriate C code so that it'll get wrapped to return an array of CS_AUDIODEVICE and CS_MIDIDEVICE?  

Also, does someone have example C code for using the related Csound API functions?

Thanks!

steven

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Thanks for this.  I think that generally it's better to have ** for
array types rather than just * which usually gets mapped as just a
reference to an object.  As it is, I don't think the C code can be
automatically wrapped with SWIG, so intermediary code would need to be
introduced. Not sure of path forward, but at least the problem is
identified.

On Wed, Aug 14, 2013 at 7:45 PM, Andres Cabrera <mantaraya36@gmail.com> wrote:
> Hi,
>
> I'm not sure if these functions are available outside the C/C++ API, but
> this is what the code in CsoundQt looks like:
>
>     QList<QPair<QString, QString> > deviceList;
> #ifdef CSOUND6
>     CSOUND *cs = csoundCreate(NULL);
>     csoundSetRTAudioModule(cs, module.toLatin1().data());
>     int i,newn, n = csoundGetAudioDevList(cs,NULL,0);
>     CS_AUDIODEVICE *devs = (CS_AUDIODEVICE *)
> malloc(n*sizeof(CS_AUDIODEVICE));
>     newn = csoundGetAudioDevList(cs,devs,0);
>     if (newn != n) {
>         qDebug() << "ConfigLists::getAudioInputDevices Device number
> changed";
>         return deviceList;
>     }
>     for (i = 0; i < n; i++) {
> //        qDebug() << devs[i].device_name;
>         deviceList.append(QPair<QString,QString>(devs[i].device_name,
> QString(devs[i].device_id)));
>     }
>     free(devs);
> #else
>
> You first need to query the available modules with something like:
>     CSOUND *csound = csoundCreate(NULL);
>     char *name, *type;
>     int n = 0;
>     while(!csoundGetModule(csound, n++, &name, &type)) {
>         if (strcmp(type, "audio") == 0) {
>             rtAudioNames << name;
> //            printf("Module %d:  %s (%s) \n", n, name, type);
>         }
>     }
>     rtAudioNames << "null"; // add also none (-+rtaudio=null)
>     n = 0;
>     while(!csoundGetModule(csound, n++, &name, &type)) {
>         if (strcmp(type, "midi") == 0) {
>             rtMidiNames << name;
> //            printf("MIDI Module %d:  %s (%s) \n", n, name, type);
>         }
>     }
>     rtMidiNames << "virtual" << "none";
>
> Cheers,
> Andrés
>
>
> On Wed, Aug 14, 2013 at 4:36 PM, Steven Yi <stevenyi@gmail.com> wrote:
>>
>> Hi All,
>>
>> I was experimenting with getting audio and midi device lists from Csound
>> through the API (both Python and Java via Clojure). I'm not sure it's really
>> possible to use it from outside C/C++.  Could someone tell me if this is
>> correct?
>>
>> If so, I'm wondering if we should add methods to csound.hpp doing the
>> appropriate C code so that it'll get wrapped to return an array of
>> CS_AUDIODEVICE and CS_MIDIDEVICE?
>>
>> Also, does someone have example C code for using the related Csound API
>> functions?
>>
>> Thanks!
>> steven
>>
>>
>> ------------------------------------------------------------------------------
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>> Get down to code-level detail for bottlenecks, with <2% overhead.
>> Download for free and get started troubleshooting in minutes.
>>
>> http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>
>
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>

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Yes, don't expose sructs, return everything by value.

On Aug 19, 2013 11:18 AM, "Andres Cabrera" <mantaraya36@gmail.com> wrote:

Hmm... It's a shame we didn't identify this before the release... So I think the solution is some intermediary code for SWIG. Do you think there is a way to write a code that can be shared by all language bindings?

Cheers,
Andrés

On Sun, Aug 18, 2013 at 4:47 PM, Steven Yi <stevenyi@gmail.com> wrote:

Thanks for this.  I think that generally it's better to have ** for
array types rather than just * which usually gets mapped as just a
reference to an object.  As it is, I don't think the C code can be
automatically wrapped with SWIG, so intermediary code would need to be
introduced. Not sure of path forward, but at least the problem is
identified.

On Wed, Aug 14, 2013 at 7:45 PM, Andres Cabrera <mantaraya36@gmail.com> wrote:
> Hi,
>
> I'm not sure if these functions are available outside the C/C++ API, but
> this is what the code in CsoundQt looks like:
>
>     QList<QPair<QString, QString> > deviceList;
> #ifdef CSOUND6
>     CSOUND *cs = csoundCreate(NULL);
>     csoundSetRTAudioModule(cs, module.toLatin1().data());
>     int i,newn, n = csoundGetAudioDevList(cs,NULL,0);
>     CS_AUDIODEVICE *devs = (CS_AUDIODEVICE *)
> malloc(n*sizeof(CS_AUDIODEVICE));
>     newn = csoundGetAudioDevList(cs,devs,0);
>     if (newn != n) {
>         qDebug() << "ConfigLists::getAudioInputDevices Device number
> changed";
>         return deviceList;
>     }
>     for (i = 0; i < n; i++) {
> //        qDebug() << devs[i].device_name;
>         deviceList.append(QPair<QString,QString>(devs[i].device_name,
> QString(devs[i].device_id)));
>     }
>     free(devs);
> #else
>
> You first need to query the available modules with something like:
>     CSOUND *csound = csoundCreate(NULL);
>     char *name, *type;
>     int n = 0;
>     while(!csoundGetModule(csound, n++, &name, &type)) {
>         if (strcmp(type, "audio") == 0) {
>             rtAudioNames << name;
> //            printf("Module %d:  %s (%s) \n", n, name, type);
>         }
>     }
>     rtAudioNames << "null"; // add also none (-+rtaudio=null)
>     n = 0;
>     while(!csoundGetModule(csound, n++, &name, &type)) {
>         if (strcmp(type, "midi") == 0) {
>             rtMidiNames << name;
> //            printf("MIDI Module %d:  %s (%s) \n", n, name, type);
>         }
>     }
>     rtMidiNames << "virtual" << "none";
>
> Cheers,
> Andrés
>
>
> On Wed, Aug 14, 2013 at 4:36 PM, Steven Yi <stevenyi@gmail.com> wrote:
>>
>> Hi All,
>>
>> I was experimenting with getting audio and midi device lists from Csound
>> through the API (both Python and Java via Clojure). I'm not sure it's really
>> possible to use it from outside C/C++.  Could someone tell me if this is
>> correct?
>>
>> If so, I'm wondering if we should add methods to csound.hpp doing the
>> appropriate C code so that it'll get wrapped to return an array of
>> CS_AUDIODEVICE and CS_MIDIDEVICE?
>>
>> Also, does someone have example C code for using the related Csound API
>> functions?
>>
>> Thanks!
>> steven
>>
>>
>> ------------------------------------------------------------------------------
>> Get 100% visibility into Java/.NET code with AppDynamics Lite!
>> It's a free troubleshooting tool designed for production.
>> Get down to code-level detail for bottlenecks, with <2% overhead.
>> Download for free and get started troubleshooting in minutes.
>>
>> http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>
>
> ------------------------------------------------------------------------------
> Get 100% visibility into Java/.NET code with AppDynamics Lite!
> It's a free troubleshooting tool designed for production.
> Get down to code-level detail for bottlenecks, with <2% overhead.
> Download for free and get started troubleshooting in minutes.
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> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
>

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