Track volume is reset when playback is paused or has reached the end of the score #320
Description
Your environment
- Version used: 0.9.6.266
- Platform used: JavaScript
- Rendering engine used: SVG
- Browser Name and Version: Firefox (latest)
- Operating System and version (desktop or mobile): Arch Linux
Expected Results
When the volume of the track is changed using changeTrackVolume, it should persist even when pausing or restarting the playback.
Observed Results
The track volume is reset to the default value when the playback is paused. It also happens when the end of the score is reached. This doesn't seem to occur when the playback is stopped though.
Steps to Reproduce (for bugs)
Here is a minimal demo to reproduce the behavior:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>alphaTab test app</title>
</head>
<body>
<button id="button-play" >Play </button>
<button id="button-pause">Pause </button>
<button id="button-stop" >Stop </button>
<button id="button-vol" >Change volume</button>
<div id="alphatab"></div>
<script src="alphatab-0.9.6.266.js"></script>
<script>
(function()
{
const alphatab = new alphaTab.platform.javaScript.AlphaTabApi(
document.getElementById('alphatab'),
{
core: {
logLevel: 'warning',
enableLazyLoading: true,
},
player: {
enablePlayer: true,
enableCursor: true,
soundFont: '/default.sf2',
},
}
);
alphatab.tex('\\tempo 60 . 1.2.4*4');
alphatab.addReadyForPlayback(() => {
document.getElementById('button-play' ).addEventListener('click', () => alphatab.play());
document.getElementById('button-pause').addEventListener('click', () => alphatab.pause());
document.getElementById('button-stop' ).addEventListener('click', () => alphatab.stop());
document.getElementById('button-vol' ).addEventListener('click', () =>
alphatab.changeTrackVolume([alphatab.score.tracks[0]], 0.2)
);
});
})();
</script>
</body>
</html>