you need to copy it to the server. See the code in csound.js that does it as an example.
========================
Prof. 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 1 Sep 2017, at 20:25, Hlöðver Sigurðsson <hlolli@gmail.com> wrote:
>
> I'm running wasm in nodejs and I'm encountering quite typical js problem, it (obviously maybe) can't read any file from my filesystem, so I wonder if node can be of any help here, like serving my samples on a localhost server?
>
> The error message is here for what it's worth:
>
> ftable 1000:
> deferred alloc for /home/hlolli/.samples/xx/note-012.wav
> soundin cannot open /home/hlolli/.samples/xx/note-012.wav
> ftable 1000: Failed to open file /home/hlolli/.samples/xx/note-012.wav
> f1000     0.00     0.00     1.00  "/home/hlolli/.samples/xx/note-012.wav" ...
> INIT ERROR in instr 0: ftgen error
> gi_   ftgen.iS        1000    0       0       1       "/home/hlolli/.samples/xx/note-012.wav" 0       0       0
>
> best,
> Hlöðver

> 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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I am still struggling with this, I see the example of how a soundfont file is downloaded from a server, turned into stream and written to a local file as is done with this function

    function CopyUrlToLocal(url, name, callback = null) {

        var xmlHttpRequest = new XMLHttpRequest();

        xmlHttpRequest.onload = function() {

            var data = new Uint8Array(xmlHttpRequest.response);

            var stream = FS.open(name, 'w+');

            FS.write(stream, data, 0, data.length, 0);

            FS.close(stream);

            if (callback != null) callback();

        };

        xmlHttpRequest.open("get", url, true);

        xmlHttpRequest.responseType = "arraybuffer";

        xmlHttpRequest.send(null);

    }

Since I'm using Node, I don't see the reason to use a server, the files are already local so I'm trying to find what is the working directory of my csound-wasm instance. pwd() opcode doesn't work. I'll continue to read more about filesystem and wasm on node and see if I can solve this. I also tried starting a localhost server, but noticed soon that ip-addresses for filepaths are not leagal in csound (not that I would assume it should be supported).

On 1 September 2017 at 22:05, Victor Lazzarini <Victor.Lazzarini@mu.ie> wrote:

you need to copy it to the server. See the code in csound.js that does it as an example.
========================
Prof. 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 1 Sep 2017, at 20:25, Hlöðver Sigurðsson <hlolli@gmail.com> wrote:
>
> I'm running wasm in nodejs and I'm encountering quite typical js problem, it (obviously maybe) can't read any file from my filesystem, so I wonder if node can be of any help here, like serving my samples on a localhost server?
>
> The error message is here for what it's worth:
>
> ftable 1000:
> deferred alloc for /home/hlolli/.samples/xx/note-012.wav
> soundin cannot open /home/hlolli/.samples/xx/note-012.wav
> ftable 1000: Failed to open file /home/hlolli/.samples/xx/note-012.wav
> f1000     0.00     0.00     1.00  "/home/hlolli/.samples/xx/note-012.wav" ...
> INIT ERROR in instr 0: ftgen error
> gi_   ftgen.iS        1000    0       0       1       "/home/hlolli/.samples/xx/note-012.wav" 0       0       0
>
> best,
> Hlöðver

> 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

Found good resources here:

https://kripken.github.io/emscripten-site/docs/api_reference/Filesystem-API.html

and

https://github.com/kripken/emscripten/blob/master/tests/fs/test_nodefs_rw.c#L21

I think I'll try applying the FS, see where that takes me...

On 2 September 2017 at 13:14, Hlöðver Sigurðsson <hlolli@gmail.com> wrote:

I am still struggling with this, I see the example of how a soundfont file is downloaded from a server, turned into stream and written to a local file as is done with this function

    function CopyUrlToLocal(url, name, callback = null) {

        var xmlHttpRequest = new XMLHttpRequest();

        xmlHttpRequest.onload = function() {

            var data = new Uint8Array(xmlHttpRequest.response);

            var stream = FS.open(name, 'w+');

            FS.write(stream, data, 0, data.length, 0);

            FS.close(stream);

            if (callback != null) callback();

        };

        xmlHttpRequest.open("get", url, true);

        xmlHttpRequest.responseType = "arraybuffer";

        xmlHttpRequest.send(null);

    }

Since I'm using Node, I don't see the reason to use a server, the files are already local so I'm trying to find what is the working directory of my csound-wasm instance. pwd() opcode doesn't work. I'll continue to read more about filesystem and wasm on node and see if I can solve this. I also tried starting a localhost server, but noticed soon that ip-addresses for filepaths are not leagal in csound (not that I would assume it should be supported).

On 1 September 2017 at 22:05, Victor Lazzarini <Victor.Lazzarini@mu.ie> wrote:

you need to copy it to the server. See the code in csound.js that does it as an example.
========================
Prof. 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 1 Sep 2017, at 20:25, Hlöðver Sigurðsson <hlolli@gmail.com> wrote:
>
> I'm running wasm in nodejs and I'm encountering quite typical js problem, it (obviously maybe) can't read any file from my filesystem, so I wonder if node can be of any help here, like serving my samples on a localhost server?
>
> The error message is here for what it's worth:
>
> ftable 1000:
> deferred alloc for /home/hlolli/.samples/xx/note-012.wav
> soundin cannot open /home/hlolli/.samples/xx/note-012.wav
> ftable 1000: Failed to open file /home/hlolli/.samples/xx/note-012.wav
> f1000     0.00     0.00     1.00  "/home/hlolli/.samples/xx/note-012.wav" ...
> INIT ERROR in instr 0: ftgen error
> gi_   ftgen.iS        1000    0       0       1       "/home/hlolli/.samples/xx/note-012.wav" 0       0       0
>
> best,
> Hlöðver

> 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

Bingo, got it!

For node one needs to mount a directory,

so

 FS.mkdir('/mount');

 FS.mount(NODEFS, { root: '/path/to/any/directory' }, '/mount');

then ftgen01 can acces the file

"mount/audiofile.wav"

Easy :)

On 2 September 2017 at 13:51, Hlöðver Sigurðsson <hlolli@gmail.com> wrote:

Found good resources here:

https://kripken.github.io/emscripten-site/docs/api_reference/Filesystem-API.html

and

https://github.com/kripken/emscripten/blob/master/tests/fs/test_nodefs_rw.c#L21

I think I'll try applying the FS, see where that takes me...

On 2 September 2017 at 13:14, Hlöðver Sigurðsson <hlolli@gmail.com> wrote:

I am still struggling with this, I see the example of how a soundfont file is downloaded from a server, turned into stream and written to a local file as is done with this function

    function CopyUrlToLocal(url, name, callback = null) {

        var xmlHttpRequest = new XMLHttpRequest();

        xmlHttpRequest.onload = function() {

            var data = new Uint8Array(xmlHttpRequest.response);

            var stream = FS.open(name, 'w+');

            FS.write(stream, data, 0, data.length, 0);

            FS.close(stream);

            if (callback != null) callback();

        };

        xmlHttpRequest.open("get", url, true);

        xmlHttpRequest.responseType = "arraybuffer";

        xmlHttpRequest.send(null);

    }

Since I'm using Node, I don't see the reason to use a server, the files are already local so I'm trying to find what is the working directory of my csound-wasm instance. pwd() opcode doesn't work. I'll continue to read more about filesystem and wasm on node and see if I can solve this. I also tried starting a localhost server, but noticed soon that ip-addresses for filepaths are not leagal in csound (not that I would assume it should be supported).

On 1 September 2017 at 22:05, Victor Lazzarini <Victor.Lazzarini@mu.ie> wrote:

you need to copy it to the server. See the code in csound.js that does it as an example.
========================
Prof. 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 1 Sep 2017, at 20:25, Hlöðver Sigurðsson <hlolli@gmail.com> wrote:
>
> I'm running wasm in nodejs and I'm encountering quite typical js problem, it (obviously maybe) can't read any file from my filesystem, so I wonder if node can be of any help here, like serving my samples on a localhost server?
>
> The error message is here for what it's worth:
>
> ftable 1000:
> deferred alloc for /home/hlolli/.samples/xx/note-012.wav
> soundin cannot open /home/hlolli/.samples/xx/note-012.wav
> ftable 1000: Failed to open file /home/hlolli/.samples/xx/note-012.wav
> f1000     0.00     0.00     1.00  "/home/hlolli/.samples/xx/note-012.wav" ...
> INIT ERROR in instr 0: ftgen error
> gi_   ftgen.iS        1000    0       0       1       "/home/hlolli/.samples/xx/note-012.wav" 0       0       0
>
> best,
> Hlöðver

> 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