yes, that is a way of testing it but not really RT IO. There is no need for any changes to libsndfile to do this.

Victor
----- Original Message -----
From: Brian Redfern <brianwredfern@gmail.com>
Date: Thursday, October 20, 2011 8:05 pm
Subject: Re: [Csnd] Csound on iPhone / iOS
To: csound@lists.bath.ac.uk

> Well, you could use csound to export a wav file and then have a java
> front end play back the wav file to hear the result.
>
> On Thu, Oct 20, 2011 at 12:01 PM,
> <Victor.Lazzarini@nuim.ie> wrote:
> > I can't see that; libsndfile is just soundfile IO, it does not
> do any native audio IO anywhere.
> > What we would need then is just an IO module for android (just
> as we do with other
> > systems. Maybe the portaudio people are already contemplating
> adding this to their list
> > of platforms)
> >
> >> Alternatively
> >> with 2.3 you can write your entire app in straight c++ and
> avoid jni
> >> altogether, but then libsndfile needs to be extended to handle
> >> android's native audio i/o lib.
> >>
> >> With 2.2 you'd have to use the method of passing the audio into
> >> jni to
> >> be played by the mediaplayer class from java.
> >>
> >> On Thu, Oct 20, 2011 at 11:38 AM, Steven Yi
> >> <stevenyi@gmail.com> wrote:
> >> > Well, for Android, it should be much like building the Java
> >> wrapper we
> >> > currently do, as Android's JNI system is pretty much the
> same. Just
> >> > need to cross compile it. The tricky bit is libsndfile. On
> >> the other
> >> > hand, because the library is dynamically linked, it should
> >> mean less
> >> > restriction on the release of the software.
> >> >
> >> > Really, it just needs to be cross-compiled. I could take a
> >> look at
> >> > this sometime tomorrow. We still need to collapse in all
> the dynamic
> >> > opcode libs that don't have 3rd party dependencies to before
> >> we can
> >> > really get going with all this.
> >> >
> >> >
> >> > On Thu, Oct 20, 2011 at 7:30 PM,
> >> <Victor.Lazzarini@nuim.ie> wrote:
> >> >> I'll leave it as an exercise for you Java coders out
> there... ;)
> >> >>
> >> >> ObjectiveC is unreadable, but at least it allows us to
> >> seamless mix C code
> >> >> in it, so that part was easy. With android, I guess we're
> >> talking about use
> >> >> a java wrapper, which might be a more complex task.
> >> >> Besides, latency is still something of a question.
> >> >>
> >> >> ----- Original Message -----
> >> >> From: Rory Walsh <rorywalsh@ear.ie>
> >> >> Date: Thursday, October 20, 2011 7:27 pm
> >> >> Subject: Re: [Csnd] Csound on iPhone / iOS
> >> >> To: csound@lists.bath.ac.uk
> >> >>
> >> >>> indeed...
> >> >>>
> >> >>> On 20 October 2011 19:24, Michael Gogins
> >> >>> <michael.gogins@gmail.com> wrote:
> >> >>> > Cool! And what about Android?
> >> >>> >
> >> >>> > Regards,
> >> >>> > Mike
> >> >>> >
> >> >>> > On Thu, Oct 20, 2011 at 2:07 PM,
> >> >>> <Victor.Lazzarini@nuim.ie> wrote:
> >> >>> >> We'd like to give a summary report of some work Steven and
> >> >>> myself have done this afternoon on Csound for iPhone
> >> (Steven is
> >> >>> actually ducking here and will not be available for
> >> questioning ;).
> >> >>> >>
> >> >>> >> Effectively, we have succeeded in a proof-of-concept to
> >> >>> demonstrate that it should be possible to develop applications
> >> >>> based on Csound for the iOS. We have run a csound
> >> performance on
> >> >>> the iPhone simulator, and played a sine wave at 440Hz !
> >> >>> >>
> >> >>> >> This is what we did:
> >> >>> >> 1) used a static libcsound.a
> >> >>> >> 2) turned off dynamic loading of opcodes
> >> >>> >> 3) used a static libsndfile
> >> >>> >> 4) built a minimal app which ran a csound CSD defined
> in a
> >> >>> static C string and played the resulting wave file/
> >> >>> >>
> >> >>> >> All of this with code out of the box, apart from a little
> >> >>> adjustment to do 2) which I'll commit tomorrow.
> >> >>> >>
> >> >>> >> OK, so we've proved it's all doable, with not too much work.
> >> >>> We need to provide code for doing RT IO, but that should
> be a
> >> >>> matter of tapping into csound buffers. For a full
> complement of
> >> >>> opcodes, we will need to move the plugins back as internal
> >> >>> opcodes, but this is planned to be done. We will need to build
> >> >>> libsndfile for ARM, but that is possible.
> >> >>> >>
> >> >>> >> Now the caveats:
> >> >>> >>
> >> >>> >> 1) Csound is LGPL
> >> >>> >> 2) libsndfile is LGPL
> >> >>> >> 3) Applications using these two will be LGPL.
> >> >>> >> 3) I am not sure whether it is possible to distribute any
> >> >>> apps with these licences at Apple Store.
> >> >>> >> 4) If this is possible, the source code for any of
> these Apps
> >> >>> will need to be available somewhere,
> >> >>> >> which should not be a problem. App developers can still
> >> >>> charge for those, LGPL says nothing about this.
> >> >>> >>
> >> >>> >> and
> >> >>> >>
> >> >>> >> 5) while we're showing that this can be done, I am not sure
> >> >>> we will be spending too much time on developing for iOS. But
> >> >>> developers out there are encouraged to have a go
> >> >>> >>
> >> >>> >> Regards
> >> >>> >>
> >> >>> >> Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
> >> >>> >> National University of Ireland, Maynooth
> >> >>> >>
> >> >>> >>
> >> >>> >>
> >> >>> >> Send bugs reports to the Sourceforge bug tracker
> >> >>> >>
> >> >>> https://sourceforge.net/tracker/?group_id=81968&atid=564599>>
> >> >>> Discussions of bugs and features can be posted here
> >> >>> >> To unsubscribe, send email sympa@lists.bath.ac.uk with body
> >> >>> "unsubscribe csound"
> >> >>> >>
> >> >>> >>
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> > --
> >> >>> > Michael Gogins
> >> >>> > Irreducible Productions
> >> >>> > http://www.michael-gogins.com
> >> >>> > Michael dot Gogins at gmail dot com
> >> >>> >
> >> >>> >
> >> >>> > Send bugs reports to the Sourceforge bug tracker
> >> >>> >
> >> >>> https://sourceforge.net/tracker/?group_id=81968&atid=564599>
> >> >>> Discussions of bugs and features can be posted here
> >> >>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body
> >> >>> "unsubscribe csound"
> >> >>> >
> >> >>> >
> >> >>>
> >> >>>
> >> >>> Send bugs reports to the Sourceforge bug tracker
> >> >>>
> >> https://sourceforge.net/tracker/?group_id=81968&atid=564599>>>
> >> Discussions of bugs and features can be posted here
> >> >>> To unsubscribe, send email sympa@lists.bath.ac.uk with body
> >> >>> "unsubscribe csound"
> >> >>>
> >> >>
> >> >> Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
> >> >> National University of Ireland, Maynooth
> >> >>
> >> >
> >> >
> >> > Send bugs reports to the Sourceforge bug tracker
> >> >
> >> https://sourceforge.net/tracker/?group_id=81968&atid=564599>
> >> Discussions of bugs and features can be posted here
> >> > To unsubscribe, send email sympa@lists.bath.ac.uk with body
> >> "unsubscribe csound"
> >> >
> >> >
> >>
> >>
> >> Send bugs reports to the Sourceforge bug tracker
> >>
> https://sourceforge.net/tracker/?group_id=81968&atid=564599>>
> Discussions of bugs and features can be posted here
> >> To unsubscribe, send email sympa@lists.bath.ac.uk with body
> >> "unsubscribe csound"
> >>
> >
> > Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
> > National University of Ireland, Maynooth
> >
> >
> >
> > Send bugs reports to the Sourceforge bug tracker
> >
> https://sourceforge.net/tracker/?group_id=81968&atid=564599>
> Discussions of bugs and features can be posted here
> > To unsubscribe, send email sympa@lists.bath.ac.uk with body
> "unsubscribe csound"
> >
> >
>
>
> Send bugs reports to the Sourceforge bug tracker
> https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body
> "unsubscribe csound"
>

Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
National University of Ireland, Maynooth