New subject: Javascript input

11 Aug 2007

      The notion of the callback goes all the way down to the core.  The C portion of the code is where the digit is dequeued so there is no way to avoid it.

So, When you call streamFile you can not only pass a function to callback, you can also pass an arbitrary object.  That way you can get that object as "arg" in your example callback and push the digits onto a shared string there.

The intention is to make a pure js class for this kind of thing that we can put in tree and people can use it to make their scripts.

function mycb (type, data, arg) {

	if (type == "dtmf") {
		arg.digits += data;
		return false;
	}
}
var dtmf = new Object();
dtmf.digits = "";
session.streamFile("blah.wav", mycb, dtmf);
//say you need 3 digits so subtract how many you have so far.
dtmf.digits += getDigits(3 - dtmf.digits.length, "#", 5000);

This is a crude example but you can see how you could write this into a permanently  used module everyone could use.  The idea is to make the js the place where you can continue to code functionality without touching the core.  That is the reason the default api is the lowest level possible without going too far.

This pure js module has yet to be written but we probably should get started on it soon before we make everyone duplicate this kind of thing....

Anthony Minessale II

FreeSWITCH http://www.freeswitch.org/
ClueCon http://www.cluecon.com/

AIM: anthm
MSN:anthony_minessale@hotmail.com
JABBER:anthony.minessale@gmail.com
IRC: irc.freenode.net #freeswitch

FreeSWITCH Developer Conference
sip:888@conference.freeswitch.org
iax:guest@conference.freeswitch.org/888
googletalk:conf+888@conference.freeswitch.org
pstn:213-799-1400

----- Original Message ----
From: Jonas Gauffin <jonas.gauffin@gmail.com>
To: freeswitch-users@lists.freeswitch.org
Sent: Saturday, August 11, 2007 3:37:26 AM
Subject: Re: [Freeswitch-users] Javascript input

Ok. Let's take an example:

I got a voicemail application that plays a lot of phrases. Let's check
a simple example:

session.streamFile("you_have.wav");
session.streamFile("2.wav");
session.streamFile("new_messages.wav");
choice = session.getDigit(1, "", 5000);

Ok. I want to skip to the second voicemail by pressing 2. That's not
possible with the code above. Instead you have to do something like
this:

var _digits = "";
function on_dtmf(type, digits, arg)
{
  _digits += digits;
  return false;
}

function say(phrase)
{
  if (_digits != "")
    return false;
  session.streamFile(phrase, on_dtmf);
}

function getDigits(length, terminators, timeout)
{
  if (_digits != '')
  {
    var tempVar = _digits;
    _digits = "";
    return tempVar;
  }
  return session.getDigits(length, terminators, timeout);
}

say("you_have.wav");
say("2.wav");
say("new_messages");
choice = getDigits(1, "", 5000);

Right? That will abort speach on input and return the pressed digit.
But what if we want to enter a pincode or something like that? Then we
need to handle both _digits AND use session.getDigits:

function getDigits(length, terminators, timeout)
{
  if (_digits.length < length)
  {
    tempVar = _digits;
    _digits = "";
    tempVar += session.getDigits(length - _digits.length, terminators, timeout);
    return tempVar;
  }
  else
  {
    tempVar = _digits;
    _digits = "";
    return tempVar;
  }
}

Get my point? All of that could have been two lines of code if there
was an alternative to streamFile which do not remove the DTMF from the
input queue (or whatever it's called):

session.streamAndAbortOnDtmf("theFile.wav");
var digit = session.getDigits(1, "", 3000);

All I wanted was an alternative that is simple. Again: I'm not looking
for a replacement of streamFile but an complement for those who just
want to do the above.

I apologize if my examples are incorrect in some way, I've written
them directly in this email with my mind as a reference. I might have
done some syntax errors or something like that. Afterall, it's
saturday =)

But anyway. I can create an alternative to streamFile which does
On 8/10/07, Chris Danielson <chris@maxpowersoft.com> wrote:
...
Jonas,
To what purpose would having a streamFile abort without DTMF input?  If
the streamFile operation is going to require aborting then DTMF input or
voice recognition will be the means.  Jonas, your heart is in the right
place, but everything you have asked for is already implemented in a very
flexible manner within the JavaScript engine.
Regards,
Chris Danielson
...
Yes. The current architecture works just fine.
I'm not saying that the current method should be removed. It's
excellent in those cases when you want to filter input during
streamFile and recordFile. But I still think that those cases are more
rare than wanting to abort the speech.
Consider this a feature request then: A new streamFile that do not eat
DTMF but aborts the speech instead. Or simply a new argument that
specifies that the method should abort instead of eating the DTMF.
On 8/10/07, Mike Murdock <mmurdock@coppercom.com> wrote:
...
You do currently have the option to either continue playing the prompt
or abort the prompt. In order to collect the digits during the playing
of a prompt you must code a dtmf_callback handler. When a user presses a
digit your call back handler gets called. You can decide it the digit is
a valid one and if it is valid return "false" (or the digit) causing the
prompt to stop. If the digit is not valid you can ignore it by returning
"true" and the prompting will continue. While this does require the
application developer to code a digit handler it gives you a much richer
option for the handling of the results.
You are free to develop your own wrapper function to force the
particular behaviour you want. I have written a getdigits function in
javascript that you are welcome to use to get the behaviour you are
looking for.
Michael B. Murdock
________________________________
From: freeswitch-users-bounces@lists.freeswitch.org on behalf of Jonas
Gauffin
Sent: Fri 8/10/2007 2:49 AM
To: freeswitch-users@lists.freeswitch.org
Subject: Re: [Freeswitch-users] Javascript input
Why not simply make another streamFile method that aborts on input.
Then the user can choose which one he wants.
I can elaborate my wish too. I guess that you have used a lot of IVR
applications, right?
For instance, you call your phone provider and they have a IVR m
_______________________________________________
Freeswitch-users mailing list
Freeswitch-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org
_______________________________________________
Freeswitch-users mailing list
Freeswitch-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

____________________________________________________________________________________
Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more. 
http://mobile.yahoo.com/go?refer=1GNXIC

Re: [Freeswitch-users] Javascript input

Anthony Minessale

Jonas Gauffin

Nikolay Kolev

Jonas Gauffin

tags

participants (3)