Initial HTML5 Audio() volume low when plugin is installed, normal when not installed

[bkervaski]

• [ x ] I have used Google with the error message or bug in association with the library and Cordova words to make sure the issue I'm reporting is only related to iOSRTC.
• [ x ] I have provided steps to reproduce (e.g. using sample app code https://github.com/cordova-rtc/cordova-plugin-iosrtc-sample or updated extra/renderer-and-libwebrtc-tests.js file).
• [ x ] I have provided versions of third party library name, ios, Xcode and plugin version and adapter.js version if used.

Note: If the checkboxes above are not checked (which you do after the issue is posted), the issue will be closed, removing this checkbox will result in automatic closed issue.

Versions affected

• Cordova version (e.g 7.1.0): 10.0
• Cordova iOS version (e.g 5.1.0): 6.2
• Plugin version (e.g 6.0.12): 6.0.19
• iOS version (e.g 10.2): 14.4.1
• Xcode version (e.g 11.1 - 11A1027): 12.4
• WebRTC-adapter version (e.g. 7.4.0): None
• WebRTC Framework version (e.g. JSSip 3.1.2): JSSip 3.7.1

Description

When ios-rtc plug is installed, initially all HTML5 Audio() plays at extremely low volume until the first time ios-rtc makes a call, and then HTML5 Audio() is normal level afterwards and stays that way until the app is restarted.

With ios-rtc not installed, HTML5 Audio() plays at normal volumes as expected.

Note this is easily reproduced with other combinations of software other than above.

I tried selectAudioOutput and turnOnSpeaker as well as initAudioDevices with same results.

Steps to reproduce

let test = new Audio('somefile.mp3')
test.play()

Expected results

Audio plays at normal volume as without ios-rtc installed.

Actual results

Audio plays at low volume, barely perceivable.

[hthetiot]

@bkervaski
Can you try to set MANUAL_INIT_AUDIO_DEVICE options to false in plugin.xml or/and package.json and see if you still have the issue.

<plugin name="cordova-plugin-iosrtc">
        <variable name="MANUAL_INIT_AUDIO_DEVICE" value="TRUE" />
</plugin

[bkervaski]

Boom! That got it :)

Also adding:

let hack = new Audio('silence.mp3')
    hack.play()

Prevents any HTML5 Audio() startup lag, where silence.mp3 is a valid mp3 with no audio ... testing but seems to work like a charm! Now I can finally give up the native audio plugin.

Big thanks :)

[hthetiot]

We surely need a better solution in the future, but closing the issue for now.