Hi, I am working on an app with Csound iOS that uses Csound's image opcodes, and was looking to pass different image files in via score events. To this end I would need to give the imageload a p-field argument for which image to load. I did this and it returns the following error:

error:  Unable to find opcode entry for 'imageload' with matching argument types:

Found: i imageload p

Is it impossible to use p-fields with imageload? And if so how else might I go about passing an image to Csound from iOS? 

Here is a modified version of the imageload csd I made to test using p-fields with imageload, any help is appreciated:

<CsoundSynthesizer>

<CsOptions>

; Select audio/midi flags here according to platform

-n ;no sound output

</CsOptions>

<CsInstruments>

sr=48000

ksmps=1

nchnls=2

; this test .csd copies image.png into a new file 'imageout.png'

giimage1 init

instr 1

giimage1 imageload p4

giimagew, giimageh imagesize giimage1

giimage2 imagecreate giimagew,giimageh

kndx = 0

kx_ linseg 0, p3, 1

;print imagewidth and imageheigth of image.png

prints "imagewidth = %f pixels, imageheigth = %f pixels\\n", giimagew, giimageh

myloop:

ky_ = kndx/(giimageh)

kr_, kg_, kb_ imagegetpixel giimage1, kx_, ky_

imagesetpixel giimage2, kx_, ky_, kr_, kg_, kb_

loop_lt kndx, 0.5, giimageh, myloop

endin

instr 2

imagesave giimage2, "imageout.png"

endin

instr 3

imagefree giimage1

imagefree giimage2

endin

</CsInstruments>

<CsScore>

i1 1 1 "abyss.jpg"

i2 2 1

i3 3 1

e

</CsScore>

</CsoundSynthesizer>

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Is tere a library for png fies we can use?  Both legally and practically?

On Fri, 29 Apr 2016, Dr. Richard Boulanger wrote:

> It would be great to add them to the latest release.  Especially considering
> that all iOS devices have cameras and capture images.  Possible?  Hope so.  
> R
> 
> On Fri, Apr 29, 2016 at 12:48 PM, Victor Lazzarini 
> wrote:
>       image opcodes are not available on ios as far as I know
>
>       Victor LazzariniDean of Arts, Celtic Studies, and Philosophy
> Maynooth University
> Ireland
> 
> On 29 Apr 2016, at 16:53, Emmett Palaima  wrote:
>
>       Hi, I am working on an app with Csound iOS that uses
>       Csound's image opcodes, and was looking to pass different
>       image files in via score events. To this end I would need to
>       give the imageload a p-field argument for which image to
>       load. I did this and it returns the following error:
>
>       error:  Unable to find opcode entry for 'imageload' with
>       matching argument types:
>
>       Found: i imageload p
>
>       Is it impossible to use p-fields with imageload? And if so
>       how else might I go about passing an image to Csound from
>       iOS? 
>
>       Here is a modified version of the imageload csd I made to
>       test using p-fields with imageload, any help is appreciated:
> 
>
>       
>
>       
>
>       ; Select audio/midi flags here according to platform
>
>       -n ;no sound output
>
>       
>
>       
> 
>
>       sr=48000
>
>       ksmps=1
>
>       nchnls=2
> 
>
>       ; this test .csd copies image.png into a new file
>       'imageout.png'
> 
>
>       giimage1 init
> 
>
>       instr 1
>
>       giimage1 imageload p4
>
>       giimagew, giimageh imagesize giimage1
>
>       giimage2 imagecreate giimagew,giimageh
> 
>
>       kndx = 0
>
>       kx_ linseg 0, p3, 1
>
>       ;print imagewidth and imageheigth of image.png
>
>       prints "imagewidth = %f pixels, imageheigth = %f pixels\\n",
>       giimagew, giimageh
> 
>
>       myloop:
>
>       ky_ = kndx/(giimageh)
>
>       kr_, kg_, kb_ imagegetpixel giimage1, kx_, ky_
>
>       imagesetpixel giimage2, kx_, ky_, kr_, kg_, kb_
>
>       loop_lt kndx, 0.5, giimageh, myloop
>
>       endin
> 
>
>       instr 2
> 
>
>       imagesave giimage2, "imageout.png"
>
>       endin
> 
>
>       instr 3
>
>       imagefree giimage1
>
>       imagefree giimage2
>
>       endin
> 
>
>       
>
>       
> 
>
>       i1 1 1 "abyss.jpg"
>
>       i2 2 1
>
>       i3 3 1
>
>       e
> 
>
>       
>
>       
> 
> 
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports
> to https://github.com/csound/csound/issues Discussions of bugs and
> features can be posted here
> 
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
> https://github.com/csound/csound/issues Discussions of bugs and features
> can be posted here
> 
> 
> 
> 
> --
> _____________________________________________
> Dr. Richard Boulanger
> Professor of Electronic Production and Design
> Professional Writing and Music Technology Division
> Berklee College of Music
> ______________________________________________
> President of Boulanger Labs - http://boulangerlabs.com
> Author & Editor of The Csound Book - http://mitpress.mit.edu/books/csound-book
> Author & Editor of The Audio Programming Book -
> http://mitpress.mit.edu/books/audio-programming-book
> ______________________________________________
> about: http://www.boulangerlabs.com/about/richardboulanger/
> about: http://www.csounds.com/community/developers/dr-richard-boulanger/
> music:http://www.csounds.com/community/developers/dr-richard-boulanger/dr-richard-b
> oulanger-music/
> ______________________________________________
> email: rboulanger@berklee.edu
> facebook: https://www.facebook.com/richard.boulanger.58
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
> https://github.com/csound/csound/issues Discussions of bugs and features can
> be posted here
>

Csound mailing list
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Send bugs reports to
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Discussions of bugs and features can be posted here

That would introduce a dependency to the Csound library. I am against it. 

The problem is that iOS does not support plugins. If it did, then we could provide 
these and other opcodes.


Victor Lazzarini
Dean of Arts, Celtic Studies, and Philosophy
Maynooth University
Ireland

> On 29 Apr 2016, at 19:36, jpff  wrote:
> 
> Is tere a library for png fies we can use?  Both legally and practically?
> 
>> On Fri, 29 Apr 2016, Dr. Richard Boulanger wrote:
>> 
>> It would be great to add them to the latest release.  Especially considering
>> that all iOS devices have cameras and capture images.  Possible?  Hope so.  
>> R
>> On Fri, Apr 29, 2016 at 12:48 PM, Victor Lazzarini 
>> wrote:
>>      image opcodes are not available on ios as far as I know
>> 
>>      Victor LazzariniDean of Arts, Celtic Studies, and Philosophy
>> Maynooth University
>> Ireland
>> On 29 Apr 2016, at 16:53, Emmett Palaima  wrote:
>> 
>>      Hi, I am working on an app with Csound iOS that uses
>>      Csound's image opcodes, and was looking to pass different
>>      image files in via score events. To this end I would need to
>>      give the imageload a p-field argument for which image to
>>      load. I did this and it returns the following error:
>> 
>>      error:  Unable to find opcode entry for 'imageload' with
>>      matching argument types:
>> 
>>      Found: i imageload p
>> 
>>      Is it impossible to use p-fields with imageload? And if so
>>      how else might I go about passing an image to Csound from
>>      iOS? 
>> 
>>      Here is a modified version of the imageload csd I made to
>>      test using p-fields with imageload, any help is appreciated:
>> 
>>      
>> 
>>      
>> 
>>      ; Select audio/midi flags here according to platform
>> 
>>      -n ;no sound output
>> 
>>      
>> 
>>      
>> 
>>      sr=48000
>> 
>>      ksmps=1
>> 
>>      nchnls=2
>> 
>>      ; this test .csd copies image.png into a new file
>>      'imageout.png'
>> 
>>      giimage1 init
>> 
>>      instr 1
>> 
>>      giimage1 imageload p4
>> 
>>      giimagew, giimageh imagesize giimage1
>> 
>>      giimage2 imagecreate giimagew,giimageh
>> 
>>      kndx = 0
>> 
>>      kx_ linseg 0, p3, 1
>> 
>>      ;print imagewidth and imageheigth of image.png
>> 
>>      prints "imagewidth = %f pixels, imageheigth = %f pixels\\n",
>>      giimagew, giimageh
>> 
>>      myloop:
>> 
>>      ky_ = kndx/(giimageh)
>> 
>>      kr_, kg_, kb_ imagegetpixel giimage1, kx_, ky_
>> 
>>      imagesetpixel giimage2, kx_, ky_, kr_, kg_, kb_
>> 
>>      loop_lt kndx, 0.5, giimageh, myloop
>> 
>>      endin
>> 
>>      instr 2
>> 
>>      imagesave giimage2, "imageout.png"
>> 
>>      endin
>> 
>>      instr 3
>> 
>>      imagefree giimage1
>> 
>>      imagefree giimage2
>> 
>>      endin
>> 
>>      
>> 
>>      
>> 
>>      i1 1 1 "abyss.jpg"
>> 
>>      i2 2 1
>> 
>>      i3 3 1
>> 
>>      e
>> 
>>      
>> 
>>      
>> Csound mailing list Csound@listserv.heanet.ie
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports
>> to https://github.com/csound/csound/issues Discussions of bugs and
>> features can be posted here
>> Csound mailing list Csound@listserv.heanet.ie
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
>> https://github.com/csound/csound/issues Discussions of bugs and features
>> can be posted here
>> --
>> _____________________________________________
>> Dr. Richard Boulanger
>> Professor of Electronic Production and Design
>> Professional Writing and Music Technology Division
>> Berklee College of Music
>> ______________________________________________
>> President of Boulanger Labs - http://boulangerlabs.com
>> Author & Editor of The Csound Book - http://mitpress.mit.edu/books/csound-book
>> Author & Editor of The Audio Programming Book -
>> http://mitpress.mit.edu/books/audio-programming-book
>> ______________________________________________
>> about: http://www.boulangerlabs.com/about/richardboulanger/
>> about: http://www.csounds.com/community/developers/dr-richard-boulanger/
>> music:http://www.csounds.com/community/developers/dr-richard-boulanger/dr-richard-b
>> oulanger-music/
>> ______________________________________________
>> email: rboulanger@berklee.edu
>> facebook: https://www.facebook.com/richard.boulanger.58
>> Csound mailing list Csound@listserv.heanet.ie
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
>> https://github.com/csound/csound/issues Discussions of bugs and features can
>> be posted here
> 
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>       https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here

Not a problem on Android. It’s possible to build plugins on Android. In this particular case, we just need to find the dependencies
for that platform and make a plugin makefile.
========================
Dr Victor Lazzarini
Dean of Arts, Celtic Studies and Philosophy,
Maynooth University,
Maynooth, Co Kildare, Ireland
Tel: 00 353 7086936
Fax: 00 353 1 7086952 

> On 29 Apr 2016, at 20:35, Dr. Richard Boulanger  wrote:
> 
> I have some .png things that I could share/send/post - including model instruments that I use to test things in CsoundQt.
> 
> But, as Victor points out, there are some limitations with iOS. (and possibly Android?)
> 
> 
> 
> On Fri, Apr 29, 2016 at 2:36 PM, jpff  wrote:
> Is tere a library for png fies we can use?  Both legally and practically?
> 
> On Fri, 29 Apr 2016, Dr. Richard Boulanger wrote:
> 
> It would be great to add them to the latest release.  Especially considering
> that all iOS devices have cameras and capture images.  Possible?  Hope so.  
> R
> 
> On Fri, Apr 29, 2016 at 12:48 PM, Victor Lazzarini 
> wrote:
>       image opcodes are not available on ios as far as I know
> 
>       Victor LazzariniDean of Arts, Celtic Studies, and Philosophy
> 
> Maynooth University
> Ireland
> 
> On 29 Apr 2016, at 16:53, Emmett Palaima  wrote:
> 
>       Hi, I am working on an app with Csound iOS that uses
>       Csound's image opcodes, and was looking to pass different
>       image files in via score events. To this end I would need to
>       give the imageload a p-field argument for which image to
>       load. I did this and it returns the following error:
> 
>       error:  Unable to find opcode entry for 'imageload' with
>       matching argument types:
> 
>       Found: i imageload p
> 
>       Is it impossible to use p-fields with imageload? And if so
>       how else might I go about passing an image to Csound from
>       iOS? 
> 
>       Here is a modified version of the imageload csd I made to
>       test using p-fields with imageload, any help is appreciated:
> 
> 
>       
> 
>       
> 
>       ; Select audio/midi flags here according to platform
> 
>       -n ;no sound output
> 
>       
> 
>       
> 
> 
>       sr=48000
> 
>       ksmps=1
> 
>       nchnls=2
> 
> 
>       ; this test .csd copies image.png into a new file
>       'imageout.png'
> 
> 
>       giimage1 init
> 
> 
>       instr 1
> 
>       giimage1 imageload p4
> 
>       giimagew, giimageh imagesize giimage1
> 
>       giimage2 imagecreate giimagew,giimageh
> 
> 
>       kndx = 0
> 
>       kx_ linseg 0, p3, 1
> 
>       ;print imagewidth and imageheigth of image.png
> 
>       prints "imagewidth = %f pixels, imageheigth = %f pixels\\n",
>       giimagew, giimageh
> 
> 
>       myloop:
> 
>       ky_ = kndx/(giimageh)
> 
>       kr_, kg_, kb_ imagegetpixel giimage1, kx_, ky_
> 
>       imagesetpixel giimage2, kx_, ky_, kr_, kg_, kb_
> 
>       loop_lt kndx, 0.5, giimageh, myloop
> 
>       endin
> 
> 
>       instr 2
> 
> 
>       imagesave giimage2, "imageout.png"
> 
>       endin
> 
> 
>       instr 3
> 
>       imagefree giimage1
> 
>       imagefree giimage2
> 
>       endin
> 
> 
>       
> 
>       
> 
> 
>       i1 1 1 "abyss.jpg"
> 
>       i2 2 1
> 
>       i3 3 1
> 
>       e
> 
> 
>       
> 
>       
> 
> 
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports
> to https://github.com/csound/csound/issues Discussions of bugs and
> features can be posted here
> 
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
> https://github.com/csound/csound/issues Discussions of bugs and features
> can be posted here
> 
> 
> 
> 
> --
> _____________________________________________
> Dr. Richard Boulanger
> Professor of Electronic Production and Design
> Professional Writing and Music Technology Division
> Berklee College of Music
> ______________________________________________
> President of Boulanger Labs - http://boulangerlabs.com
> Author & Editor of The Csound Book - http://mitpress.mit.edu/books/csound-book
> Author & Editor of The Audio Programming Book -
> http://mitpress.mit.edu/books/audio-programming-book
> ______________________________________________
> about: http://www.boulangerlabs.com/about/richardboulanger/
> about: http://www.csounds.com/community/developers/dr-richard-boulanger/
> music:http://www.csounds.com/community/developers/dr-richard-boulanger/dr-richard-b
> oulanger-music/
> ______________________________________________
> email: rboulanger@berklee.edu
> facebook: https://www.facebook.com/richard.boulanger.58
> Csound mailing list Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to
> https://github.com/csound/csound/issues Discussions of bugs and features can
> be posted here
> 
> 
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
> 
> 
> 
> -- 
> _____________________________________________
> Dr. Richard Boulanger
> Professor of Electronic Production and Design
> Professional Writing and Music Technology Division
> Berklee College of Music
> ______________________________________________
> President of Boulanger Labs - http://boulangerlabs.com
> Author & Editor of The Csound Book - http://mitpress.mit.edu/books/csound-book
> Author & Editor of The Audio Programming Book - http://mitpress.mit.edu/books/audio-programming-book
> ______________________________________________
> about: http://www.boulangerlabs.com/about/richardboulanger/
> about: http://www.csounds.com/community/developers/dr-richard-boulanger/
> music: http://www.csounds.com/community/developers/dr-richard-boulanger/dr-richard-boulanger-music/
> ______________________________________________
> email: rboulanger@berklee.edu
> facebook: https://www.facebook.com/richard.boulanger.58
> Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

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Send bugs reports to
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Discussions of bugs and features can be posted here

What we really want is someting more general, which allows reading of a 
range of picture formats and gives access to colour values at an (x,y) 
location.  So far I have failed to find such, and it has to be ompatable 
with LGPL...

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There is this: http://www.boost.org/doc/libs/1_60_0/libs/gil/doc/index.html.

It meets all our requirements, but it is C++.

Best,
Mike

-----------------------------------------------------
Michael Gogins
Irreducible Productions
http://michaelgogins.tumblr.com
Michael dot Gogins at gmail dot com


On Sat, Apr 30, 2016 at 3:43 PM, jpff  wrote:
> What we really want is someting more general, which allows reading of a
> range of picture formats and gives access to colour values at an (x,y)
> location.  So far I have failed to find such, and it has to be ompatable
> with LGPL...
>
>
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

Csound mailing list
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Send bugs reports to
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Discussions of bugs and features can be posted here

Image processing is so easy with external libraries and native APIs that I'd always recommend doing this natively and passing the info to Csound. I don't think we need to pursue this kind of thing in Csound. Just my feelings. The less dependencies we have the better ;)