2021-06-01 16:17:36 +02:00
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<script lang="typescript">
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2021-06-02 17:58:58 +02:00
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import { AudioContext } from 'standardized-audio-context';
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2021-06-01 16:17:36 +02:00
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import {SoundMeter} from "../../Phaser/Components/SoundMeter";
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import {onDestroy} from "svelte";
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export let stream: MediaStream | null;
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let volume = 0;
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const NB_BARS = 20;
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2021-06-15 18:34:11 +02:00
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let timeout: ReturnType<typeof setTimeout>;
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2021-06-01 16:17:36 +02:00
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const soundMeter = new SoundMeter();
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2021-06-03 10:17:38 +02:00
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let display = false;
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2021-06-01 16:17:36 +02:00
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$: {
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if (stream && stream.getAudioTracks().length > 0) {
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2021-06-03 10:17:38 +02:00
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display = true;
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2021-06-01 16:17:36 +02:00
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soundMeter.connectToSource(stream, new AudioContext());
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if (timeout) {
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clearInterval(timeout);
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}
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timeout = setInterval(() => {
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try{
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volume = parseInt((soundMeter.getVolume() / 100 * NB_BARS).toFixed(0));
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//console.log(volume);
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}catch(err){
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}
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}, 100);
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2021-06-03 10:17:38 +02:00
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} else {
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display = false;
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2021-06-01 16:17:36 +02:00
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}
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}
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onDestroy(() => {
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soundMeter.stop();
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if (timeout) {
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clearInterval(timeout);
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}
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})
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function color(i: number, volume: number) {
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const red = 255 * i / NB_BARS;
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const green = 255 * (1 - i / NB_BARS);
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let alpha = 1;
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if (i >= volume) {
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alpha = 0.5;
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}
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return 'background-color:rgba('+red+', '+green+', 0, '+alpha+')';
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}
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</script>
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2021-06-03 10:17:38 +02:00
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<div class="horizontal-sound-meter" class:active={display}>
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2021-06-11 11:29:36 +02:00
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{#each [...Array(NB_BARS).keys()] as i (i)}
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2021-06-01 16:17:36 +02:00
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<div style={color(i, volume)}></div>
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{/each}
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</div>
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<style lang="scss">
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.horizontal-sound-meter {
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display: flex;
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flex-direction: row;
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width: 50%;
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height: 30px;
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margin-left: auto;
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margin-right: auto;
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margin-top: 1vh;
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}
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.horizontal-sound-meter div {
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margin-left: 5px;
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flex-grow: 1;
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}
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</style>
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