Re: [orca-list] Patch: Experimental eSpeak support using python-espeak

From: kendell clark <coffeekingms gmail com>
To: Peter Vágner <pvdeejay gmail com>, chrys87 web de
Cc: ORCA-LIST gnome org
Subject: Re: [orca-list] Patch: Experimental eSpeak support using python-espeak
Date: Mon, 24 Aug 2015 03:33:27 -0500

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hi
This is fantastic! Joanie, Is it possible this could be put into orca
at some point? Not to replace speech-dispatcher, but supplement it? In
particular, This would work good on systems which don't use
pulseaudio, something speech-dispatcher doesn't do well.
Thanks
Kendell clark

Peter Vágner wrote:

Hello, Thanks Chrys for the feetback. Oh I should have reported I
am working on this in the IRC channel so I would not waste your
time.

In the mean time I have pushed all this into my github account at 
https://github.com/pvagner/orca fixing a few little things along
the way: - Proper range is now used when setting eSpeak volume. -
Voices with additional dialect such en-us pt-br can now be set
correctly.

I am also seeing a bit of lag when pressing keys. It's mostly
noticeable when typing too fast or selecting the text. I haven't
yet figured out what might be causing this. Perhaps I need to find
a way on how to decrease eSpeak sound buffer somehow. Or I need to 
move speaking into seperate thread. If you have more ideas related
to this, I'm listening.

Thanks and greetings

Peter

On 24.08.2015 at 07:35 chrys87 web de wrote:

Howdy Peter,

Haha i also did starting a work on this yesterday because
storm_dragon told me that he is need this.  your stuff works just
fine! (i just did a quick test) So i stop my work on this and  do
other things :).

Cheers chrys

Am Mo. Aug. 24 00:25:18 2015 GMT+0200 schrieb Peter Vágner:

Hello, Today I was playing with orca a bit more than usual. The
result is that I have implemented an alternative speech server
subclass. I have taken speechdispatcherfactory module and I
have replaced python-speechd API with python-espeak one accross
the whole module. So by doing this I think I have created
experimental direct eSpeak support for orca. It requires
python-espeak to be installed. I tryed to do this because a
while ago we were discussing this approach here on the list.
You guys were hoping for additional responsiveness increase and
easier way on how to add eSpeak specific features like variants
support into orca. Also I have come up with another little 
advantage as I have been thinking about this more. By default
eSpeak is built with both pulseaudio and portaudio sound
outputs. It first tryes to use pulseaudio and if that is not
available it plays its audio through portaudio thus using alsa
directly. It can't switch between this dynamically at runtime
but it at least works out what to use at initialization what
translates to when launching the application when using
python-espeak. There are no eSpeak specific features yet.
Things which are working include speaking, changing voices,
changing pitch, rate and volume. Say all support with proper
progress tracking is also working. I am not sure I like this
better than using eSpeak through speech-dispatcher like we are
doing for years. I am using this experiment for just a few
hours now. I am attaching a patch for those of you who are not
afraid of risking a bit. Please make sure you know how to
revert this and troubleshoot your system when it fails to
speak. This is my first attempt at trying to implement
something into orca so it is very likelly it may have loads of
issues I even can't think of at the moment. So how to apply it
if you really want to test it out. - Install python-espeak. If
you are on arch linux, get it from the AUR. I guess on Debian
or Ubuntu you can just do apt-get install python-espeak. With
other distributions I don't know whether there are prebuilt
packages. Python-espeak is hosted on launchpad and if there
are no packages for your distro then you can get it from there
and install using python setup tools. To check whether the
patch applies cleanly into your cloned orca git tree you can
run git apply --check espeakfactory.patch If there are no
conflicts found you can then apply it by doing git apply
espeakfactory.patch After doing this you can just build and
install orca like normal.

Greetings

Peter


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References:
- [orca-list] Patch: Experimental eSpeak support using python-espeak
  - From: Peter Vágner
- Re: [orca-list] Patch: Experimental eSpeak support using python-espeak
  - From: chrys87
- Re: [orca-list] Patch: Experimental eSpeak support using python-espeak
  - From: Peter Vágner

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