Paused audio resumes automatically on refocusing browser tour tab in Firefox and Chrome on Win10

Hi all,

my paused sound resumes when using ATL+TAB to get back into the browser tour tab.

Sound plays/streams by onclick on "play hotspot", then gets paused by clicking on "pause hotspot", then I use ALT+TAB to switch to another program, then use ALT+TAB again to get back to the browser tour tab and the problem occurs:
Most of the times (not always), the paused sound resumes automatically without any other user interaction.
Is it possible the browser audio focusing may cause this in Chrome and Firefox?

I tried both streamsound and playsound, tried autopause and autounlock true/false without success.

Maybe a manual autopause action could be a workaround: Once the vtour looses focus, pause the sound and switch play to pause button, but I'm not sure how to achieve this.

Right now I use this rather dirty code:

<hotspot name="snd1play" ... enabled="true" visible="true" onclick="destroysound(s2); streamsound(s1, 's1.mp3|s1.webm', false, 1, stopallsounds();); set(hotspot[snd1pause].visible,true); set(hotspot[snd1play].visible,false);" />
<hotspot name="snd1pause" ... enabled="true" visible="false" onclick="pauseallsounds(); set(hotspot[snd1play].visible,true); set(hotspot[snd1pause].visible,false); set(hotspot[snd1play].onclick, togglesound(s1); set(hotspot[snd1pause].visible,true); set(hotspot[snd1play].visible,false); );" />

Could someone share a hint please?

Thank you!
loki

Thank you very much Hamid for sending me into the right direction.

With soundinterface setting
autopause="true"

below code works to prevent previously paused sound to automatically resume playing on loosing and then focussing the window/tab again:

<action name="listentofocuschange" type="Javascript" autorun="onstart">
	<![CDATA[
		document.addEventListener("visibilitychange", event => {
		if (document.visibilityState == "visible") {
				krpano.call('trace(getfocus));');
				krpano.call('if(audio === null, pauseallsounds(););')			
			} else {
				krpano.call('trace(lostfocus));')
			}
		})		 
	]]>
</action>

... with "audio" being my helper var.

Also with autopause="false" this bug happens Klaus.

Best,
Max

Hi Klaus,

sorry for the confusion.

It seems like the autopause="true" setting overwrites the "pauseallsounds();"-action. Even with autopause="true", I expected that audio, which gets paused by the user would still be paused if the user changes tabs and comes back to the tour-tab. The previously paused audio (e.g. onclick audio-hotspot) would then resume unexpectedly, probably because autopause thinks a previously paused audio needs to resume on focussing the tour-tab again, which is misleading.
Interestingly, the same happens with autopause="false".

Bug behaviour step by step:

For autopause="true":

1: Start sound using streamsound(name, ......);
sound starts as expected

2: Pause sound using pauseallsounds();
sound pauses as expected

3: Switch tab/hide browser (Chrome)
tour looses focus, sound still paused as expected

4: Switch back to tour-tab
tour gets focus, paused audio resumes without user interaction unexpectedly

The same happens for autopause="false":

1: Start sound using streamsound(name, ......);
sound starts as expected

2: Pause sound using pauseallsounds();
sound pauses as expected

3: Switch tab/hide browser (Chrome)
tour looses focus, sound still paused as expected

4: Switch back to tour-tab
tour gets focus, paused audio resumes without user interaction unexpectedly

I can create a test later.

Best,
Max