gecko-dev/dom/base/test/file_webaudioLoop.html

45 строки
823 B
HTML

<!DOCTYPE html>
<script>
var ac = new AudioContext();
var runningPromise = new Promise(resolve => {
ac.onstatechange = event => {
if (ac.state == "running") {
resolve();
}
};
});
fetch("audio.ogg").then(response => {
return response.arrayBuffer();
}).then(ab => {
return ac.decodeAudioData(ab);
}).then(ab => {
var src = ac.createBufferSource();
src.buffer = ab;
src.loop = true;
src.loopStart = 0;
src.loopEnd = ab.duration;
src.start();
src.connect(ac.destination);
});
var suspendPromise;
function suspendAC() {
runningPromise.then(() => {
suspendPromise = ac.suspend();
});
}
var resumePromise;
function resumeAC() {
suspendPromise.then(() => {
resumePromise = ac.resume();
});
}
function closeAC() {
resumePromise.then(() => {
ac.close();
});
}
</script>