Re: Speech Synthesis - Length parameter

On Fri, Nov 18, 2016 at 10:59 AM Jerry Smith (WPT) <jdsmith@microsoft.com>
wrote:

> The API supports simultaneously running multiple speech synthesis
> engines?  When might that be useful?
>

Not "simultaneously" in the sense that they're all speaking at once, but
"simultaneously" in the sense that one utterance might be generated by one
engine, and the next by a different engine.


>
>
> That aside, do you have a concern about these event attributes being
> undefined if the capability is not supported?  I expected adding charLength
> was a fairly straightforward addition to the current attribute set.
>
>
>
> *From:* Eitan Isaacson [mailto:eisaacson@mozilla.com]
>
> *Sent:* Wednesday, November 16, 2016 3:42 PM
> *To:* Glen Shires <gshires@google.com>
> *Cc:* Jerry Smith (WPT) <jdsmith@microsoft.com>; Dominic Mazzoni <
> dmazzoni@google.com>; public-speech-api@w3.org
>
>
> *Subject:* Re: Speech Synthesis - Length parameter
>
>
>
> Just to be clear: a user agent can utilize multiple speech engines
> simultaneously, some would support charLength, some would not.
>
> An implementation would need to have charLength be either an integer or
> null/undefined in each case.
>
>
>
> On Wed, Nov 16, 2016 at 3:22 PM, Eitan Isaacson <eisaacson@mozilla.com>
> wrote:
>
> Just trying to translate that to valid webidl. How can an attribute be a
> primitive or undefined? The only equivalent way I know is if it were
> nullable with a '?' operator.
>
>
>
> On Wed, Nov 16, 2016 at 3:19 PM, Glen Shires <gshires@google.com> wrote:
>
> On Wed, Nov 16, 2016 at 2:42 PM, Eitan Isaacson <eisaacson@mozilla.com>
> wrote:
> >
> >
> >
> > On Wed, Nov 16, 2016 at 1:32 PM, Glen Shires <gshires@google.com> wrote:
> >>
> >> The user
> >> agent must return this value if the speech synthesis engine supports
> >> it or the user agent can otherwise determine it, otherwise the user
> >> agent must return undefined.
> >
> >
> > How does that actually work? Shouldn't charLength be a nullable type?
> s/undefined/null/
> >
> > And:
> > readonly attribute unsigned long? charLength;
>
> charIndex is also an unsigned long and undefined if the speech
> synthesis engine doesn't support it.
>
> Is there a specific problem with this that you see?
>
>
>
>
>