[webkit-changes] [WebKit/WebKit] a29a02: [GStreamer] Implement pitch, rate, and volume cont...

[ChangSeok Oh]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: a29a02ef293ea6f1711b746507f913f7a77a6e8d
      https://github.com/WebKit/WebKit/commit/a29a02ef293ea6f1711b746507f913f7a77a6e8d
  Author: ChangSeok Oh <changseok at webkit.org>
  Date:   2023-02-07 (Tue, 07 Feb 2023)

  Changed paths:
    M Source/WebCore/platform/gstreamer/PlatformSpeechSynthesizerGStreamer.cpp

  Log Message:
  -----------
  [GStreamer] Implement pitch, rate, and volume controls of SpeechSynthesis
https://bugs.webkit.org/show_bug.cgi?id=251486

Reviewed by Philippe Normand.

This change adds pitch, rate, and volume controls support to web speech synthesis.
We use a GStreamer plugin of soundtouch for the pitch change of voice and control
the voice rate with gst_element_seek.

* Source/WebCore/platform/gstreamer/PlatformSpeechSynthesizerGStreamer.cpp:
(WebCore::GstSpeechSynthesisWrapper::GstSpeechSynthesisWrapper):
(WebCore::GstSpeechSynthesisWrapper::speakUtterance):

Canonical link: https://commits.webkit.org/259949@main