Dummy speechd-el output driver possibly for running speechd-el inside emacs on android

[Peter Vágner]

Hello,

Huh, I'm afraid I am not proficient enough so I would be able to rework
speech-dispatcher handling to work with gthreads instead of pthread.
Newertheless I've taken a look at the GLib threading docs
https://developer.gnome.org/glib/stable/glib-Threads.html . By some quick
look at the speech-dispatcher code (I've only looked at espeak module so
far as I do know espeak API so it's easier for me to understand what's
espeak and what's speech-dispatcher side of things...) comparing it with
the functions and types documented in these GLib docs I think g_thread* and
g_mutex* calls and types are pretty much in sync with its pthread
counterparts. So changing these should not be very difficult task given the
fact speech-dispatcher already makes some extensive use of GLib functions.
I was able to find this old discussion which supports my understanding of
the matter at
https://mail.gnome.org/archives/gtk-app-devel-list/2010-October/msg00072.html
As an addition I've started looking at pthread semaphores. Or more
specifically I need to have these reimplemented in order to be able to
build on Android. and discovered this stack overflow question along with
the accepted answer:
https://stackoverflow.com/questions/10711258/implement-a-semaphore#18550188
.

Is this a way to go or am I missunderstanding the matter?
Might I be able to try out porting some modules one after the other this
way when working with speech-dispatcher or do I have to look at
speech-dispatcher as a whole when doing this?
As a proof if I might actually be able to do this my-self I'm thinking
reworking espeak module to use GLib threads in place of pthread.
What do you think should I try or might this be better suited for an
experienced developer avoiding risks that I might inadvertently break
something else I may not be aware of at all?

Thanks and greetings

Peter


2017-11-02 0:08 GMT+01:00 Luke Yelavich <themuso at themuso.com>:

> On Thu, Nov 02, 2017 at 07:15:57AM AEDT, Peter V?gner wrote:
> > Given all this I would like to try getting speechd-el working with such a
> > setup.
> > So I do have emacs, I do have speechd-el, I do have espeak built against
> > libpulse, however the glue between speechd-el and espeak is missing. I
> > can't build speech-dispatcher on termux because android pthreads support
> is
> > too limited for speech-dispatcher to build there.
>
> My desire is to eventually have all of speech-dispatcher code use GLib's
> own
> threads API, which afaikis usable on Android. In fact using as much GLib as
> possible would allow uses of speech-dispatcher on other platforms, Android,
> Mac OS, etc.
>
> > Since speechd-el has an API that more output drivers can be running at
> the
> > same time or even independently of each other I think it might be more
> > viable than fighting pthreads on android  trying to create a kind of very
> > simple output driver for speechd-el.
>
> There is documentation for the SSIP protocol which is used over either a
> unix
> socket or inet socket. The docs are in the speechd git tree. It would be a
> matter of implementing code to parse and interract with that protocol and
> wrap espeak or even Android's own TTS API.
>
> Longer term though, I do think getting speech-dispatcher building more
> easily
> on android may be a better solution, patches welcome of course.
> --
> Please check out my Patreon campaign and spread the word.
> https://patreon.com/lukefoss
>
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