25 lines
762 B
TypeScript
25 lines
762 B
TypeScript
const maxWidth = 1920;
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const maxHeight = 1080;
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const silence = () => {
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const ctx = new AudioContext();
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const oscillator = ctx.createOscillator();
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const dst = oscillator.connect(ctx.createMediaStreamDestination());
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oscillator.start();
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return Object.assign((dst as any).stream.getAudioTracks()[0], { enabled: false });
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};
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const black = () => {
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const canvas = Object.assign(document.createElement('canvas'), {
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width: maxWidth,
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height: maxHeight,
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});
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canvas.getContext('2d')?.fillRect(0, 0, maxWidth, maxHeight);
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const stream = (canvas as any).captureStream();
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return Object.assign(stream.getVideoTracks()[0], { enabled: false });
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};
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export const getBlackSilenceMediaStream = () => {
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return new MediaStream([black(), silence()]);
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};
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