Add support for Microsoft Speech Platform voices

[nvaccessAuto]

Reported by clev on 2011-08-28 01:19
I installed a Portuguesd SAPI 5.4 voice on my Windows XP but NVDA haven't recognized it. Here are the links to the speech platform runtime and the Portuguese voice I installed:
http://download.microsoft.com/download/3/5/1/351B3C70-B7F4-4F86-94EA-5AECC3AB6B5C/x86/SpeechPlatformRuntime.msi
http://download.microsoft.com/download/D/5/F/D5F14B6D-3C5B-4329-A86D-8DF7A5EB45E8/MSSpeech_TTS_pt-BR_Heloisa.msi

[nvaccessAuto]

Comment 2 by jteh on 2011-08-28 01:22
Does this voice show up correctly in the Speech section of Control Panel? I suspect this is perhaps the same SAPI 5.4 voice we tested and it didn't show up in Control Panel at all, which leads me to suspect it doesn't actually work.

[nvaccessAuto]

Comment 3 by clev (in reply to comment 2) on 2011-08-28 01:35
Replying to jteh:

Does this voice show up correctly in the Speech section of Control Panel?

No, it doesn't. However, the brazilian suite of self-voicing apps called Dosvox recently added support for it. I'll have to ask some Dosvox developers and users for more references....

[nvaccessAuto]

Attachment tradutor.7z added by clev on 2011-08-28 14:46
Description:
Not sure whether this will help; here are some source files from the Dosvox project (written in Delphi 6.0), which may contain some valuable information on how to deal with SAPI 5.4.

[nvaccessAuto]

Comment 4 by clev on 2011-08-28 14:47
I have just attached some Dosvox source code which may help implementing this.

[nvaccessAuto]

Attachment sapi54.py added by pvagner on 2011-08-29 09:21
Description:
synthDriver which will load Microsoft Sapi 5.4 voices (inherits from sapi5 synthDriver)

[nvaccessAuto]

Comment 5 by pvagner on 2011-08-29 09:25
How veird Sapi 5.4 is not an update it installs another library with the same functiality so in order to load such voices we need to create another com object.
Working synthDriver is attached.
Now the question is do we want to commit it or should I distribute as an optional synthDriver installable into the user configuration directory (userConfig or %appdata%\NVDA)

[nvaccessAuto]

Comment 6 by jteh on 2011-08-29 22:39
Can you see voices from older versions of SAPI5 with this driver or only SAPI5.4 voices?

[nvaccessAuto]

Comment 7 by mdcurran on 2011-08-30 03:47
Fixed in 4597. Certainly fine to go in to main. However, with a very small change to sapi5.py (moving COM_class to class level) then the sapi5.4 driver only needs to override COM_class, rather than initTTs.
Changes:
Milestone changed from None to 2011.3
State: closed

[nvaccessAuto]

Comment 8 by pvagner (in reply to comment 6) on 2011-08-30 04:28
Replying to jteh:

Can you see voices from older versions of SAPI5 with this driver or only SAPI5.4 voices?

This only exposes sapi 5.4 voices. For most voices we still need the original sapi5 driver which creates Sapi.SpVoice com object.

[nvaccessAuto]

Comment 9 by jteh on 2011-08-30 05:20
I've done a bit of research. This is actually the Microsoft Speech Platform, which is a separate thing with a SAPI compatible interface. It's meant for implementing speech in server applications. This explains why it uses a different interface and thus requires a different driver. I'm therefore going to rename this driver accordingly.
Changes:
Changed title from "Add support for SAPI 5.4 voices" to "Add support for Microsoft Speech Platform voices"

[nvaccessAuto]

Comment 10 by jteh on 2011-08-30 06:52
Rename done in 1529322.