Re: [rtcweb] The DTMF API [Was: Traffic should be encrypted. (Re: Let's define the purpose of WebRTC)]

[Justin Uberti <[e-mail]>]

On Wed, Nov 16, 2011 at 2:20 AM, Jonathan Lennox <[e-mail]> wrote:

> Justin Uberti writes:****
>
> [Local]MediaStreamTrack.sendDTMF(in DOMString tones, in optional long
> duration) ****
>
> ** **
>
> ex:****
>
> sendDTMF("1")  // plays tone 1 for 50 ms****
>
> sendDTMF("2", 200)  // plays tone 2 for 200 ms****
>
> sendDTMF("123")  // plays tones 1, 2, 3 in succession, each for 50 ms****
>
> sendDTMF("456", 200)  // plays tones 4, 5, 6 in succession, each for 200 ms
> ****
>
> ** **
>
> For some UI models, you may need start-DTMF / stop-DTMF APIs, mapping to
> mousedown / mouseup on a button or similar.  You don’t know in advance how
> long the user will hold the key down.
>

I've been trying to avoid that complexity. If it's really needed, we can
add it, but given that DTMF is kind of a wart I'd prefer to keep the
support as minimal as possible.

Of course we could let you cancel an existing press by passing in "", so
you could play a really long tone and cancel it through this API.

> ****
>
> ** **
>
> -- ****
>
> Jonathan Lennox****
>
> [e-mail]****
>
> ** **
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> ** **
>