webOS Text To Speech

Web App Development
1

I am looking to implement TTS on my web app. It appears that both aria-live regions and the SpeechSynthesis API are not supported by webOS.

I found these docs which suggest using the webOS TTS service. com.webos.service.tts | webOS Open Source Edition

I am making this call in order to attempt to have my web app speak text in support of TTS.

const apiCall: Promise<string> = new Promise((resolve) => {
    window.webOS.service.request('luna://com.webos.service.tts', {
      method: 'speak',
      onFailure() {
        resolve('');
      },
      onSuccess(response: any) {
        resolve(response);
      },
      parameters: {
        text,
      },
    });
  });

It appears that the device is speaking some text when I first open the app, but as I navigate around, it does not continue to speak the focused text.

2

We do not guarantee the compatibility of webOS TV apps with webOS OSE resources. For webOS TV apps, please use webOS TV resources in this website only. In this case, please try WAI-ARIA. To use ARIA tag in your app, you should set the supportsAudioGuidance property to true in the appinfo.json. Thank you.

3

So I need to set

"accessibility": {
      "supportsAudioGuidance": true
}

After that, how do I fetch the value from the device?

4

Please refer to WAI-ARIA and find more information on Google. Thank you.