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Test Info: Warnings
- This test gets skipped with pattern: !webrtc
- Manifest: dom/media/webrtc/tests/crashtests/crashtests.list
<!DOCTYPE html>
<!--
Verifies cross-graph ports are cleaned up when a MediaStreamTrack connected
to MediaStreamAudioSourceNode is stopped.
-->
<html class="reftest-wait">
<head>
<title>Test bug 1674892 - MediaStreamAudioSourceNode with getUserMedia and different sample rate</title>
<script>
document.addEventListener("DOMContentLoaded", async () => {
const iframe = document.createElement("iframe");
iframe.srcdoc = `
<!DOCTYPE html>
<html>
<head>
<script>
let SpecialStream = SpecialPowers.wrap(MediaStream);
let ctx, stream, sourceNode, analyser, dataArray;
window.addEventListener("message", async (event) => {
if (event.data === "startAudio") {
ctx = new AudioContext({ sampleRate: 32000 });
stream = await navigator.mediaDevices.getUserMedia({
audio: true,
fake: true
});
sourceNode = ctx.createMediaStreamSource(stream);
sourceNode.connect(ctx.destination);
analyser = ctx.createAnalyser();
analyser.fftSize = 256;
dataArray = new Uint8Array(analyser.frequencyBinCount);
sourceNode.connect(analyser);
while ((analyser.getByteFrequencyData(dataArray), dataArray.every(v => v == 0))) {
await new Promise(r => requestAnimationFrame(r));
}
const count = await SpecialStream.countUnderlyingStreams();
parent.postMessage({ type: "ready", value: count }, "*");
} else if (event.data === "destroy") {
// Clean up all resources
if (stream) {
// Stopping the MediaStreamTrack breaks connection to
// CrossGraphTransmitter, which can cause issues if the
// transmitter attempts to read from that connection during
// ::ProcessInput before the CrossGraph pair is fully torn
// down.
stream.getTracks().forEach(track => track.stop());
stream = null;
}
if (analyser) {
analyser.disconnect();
analyser = null;
}
if (sourceNode) {
sourceNode.disconnect();
sourceNode = null;
}
if (ctx) {
await ctx.close();
ctx = null;
}
dataArray = null;
// Force garbage collection
await new Promise(r => SpecialPowers.exactGC(r));
const count = await SpecialStream.countUnderlyingStreams();
parent.postMessage({ type: "destroyed", value: count }, "*");
}
});
// Notify parent that iframe is ready with initial stream count
(async () => {
const count = await SpecialStream.countUnderlyingStreams();
parent.postMessage({ type: "init", value: count }, "*");
})();
<\/script>
</head>
<body></body>
</html>
`;
document.body.appendChild(iframe);
// Helper to wait for iframe messages
const waitForMessage = (type) => {
return new Promise(resolve => {
const handler = (event) => {
if (event.data.type === type) {
window.removeEventListener("message", handler);
resolve(event.data.value);
}
};
window.addEventListener("message", handler);
});
};
// Wait for iframe to initialize and get initial stream count
const initialCount = await waitForMessage("init");
dump(`Initial stream count: ${initialCount}\n`);
// Start audio and wait for it to be ready
iframe.contentWindow.postMessage("startAudio", "*");
const readyCount = await waitForMessage("ready");
dump(`Stream count when audio ready: ${readyCount}\n`);
// Destroy all resources in the iframe while MediaStream is active
iframe.contentWindow.postMessage("destroy", "*");
const finalCount = await waitForMessage("destroyed");
dump(`Final stream count: ${finalCount}\n`);
// Check if streams were cleaned up
if (finalCount === initialCount) {
document.documentElement.removeAttribute("class");
} else {
dump("Streams were not cleaned up properly.\n");
}
});
</script>
</head>
<body></body>
</html>