Adapt speech synthesis changes from 2.28

WebPlatformForEmbedded / WPEWebKit

WPE WebKit port (downstream)

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Adapt speech synthesis changes from 2.28 #1189

Closed pgorszkowski-igalia closed 12 months ago

pgorszkowski-igalia commented 12 months ago

Add missing functions
Add proper error handling (similar to #823 with optional as in #875) for both UIProcess and WebProcess

pgorszkowski-igalia commented 12 months ago

To compile it for RPi it is needed to turn on ENABLE_SPEECH_SYNTHESIS and additionally use flite in version 2.2 (currently in WPE buildroot we have 1.4, but we can reuse flite 2.2 configuration from https://github.com/buildroot/buildroot/tree/master/package/flite)