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Test Info:
- Manifest: dom/canvas/test/mochitest.toml
<!DOCTYPE HTML>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Canvas2D test: CaptureStream()</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="captureStream_common.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<body>
<script>
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout("Ensuring nothing happens until timing out with good margin");
// CaptureStreamTestHelper holding utility test functions.
const h = new CaptureStreamTestHelper2D();
// Canvas element captured by streams.
const c = h.createAndAppendElement('canvas', 'c');
// Video element with captureStream stream in automatic mode.
const vauto = h.createAndAppendElement('video', 'vauto');
// Video element with captureStream stream in manual (fps 0) mode.
const vmanual = h.createAndAppendElement('video', 'vmanual');
// Video element with captureStream stream with fixed frame rate.
const vrate = h.createAndAppendElement('video', 'vrate');
async function checkDrawColorInitialRed() {
info("Checking that all video elements become red when initiated just after the first drawColor(red).");
h.drawColor(c, h.red);
vauto.srcObject = c.captureStream();
vmanual.srcObject = c.captureStream(0);
vrate.srcObject = c.captureStream(10);
ok(h.isPixel(h.getPixel(vauto), h.blackTransparent, 0),
"vauto should not be drawn to before stable state");
ok(h.isPixel(h.getPixel(vrate), h.blackTransparent, 0),
"vrate should not be drawn to before stable state");
ok(h.isPixel(h.getPixel(vmanual), h.blackTransparent, 0),
"vmanual should not be drawn to before stable state");
await h.pixelMustBecome(vauto, h.red, {
infoString: "should become red automatically",
});
await h.pixelMustBecome(vrate, h.red, {
infoString: "should become red automatically",
});
await h.pixelMustBecome(vmanual, h.red, {
infoString: "should become red when we get to stable state (first frame)",
});
}
async function checkDrawColorGreen() {
info("Checking that drawing green propagates properly to video elements.");
const drawing = h.startDrawing(() => h.drawColor(c, h.green));
try {
await h.pixelMustBecome(vauto, h.green, {
infoString: "should become green automatically",
});
await h.pixelMustBecome(vrate, h.green, {
infoString: "should become green automatically",
});
await h.pixelMustBecome(vmanual, h.red, {
infoString: "should still be red",
});
h.requestFrame(vmanual);
await h.pixelMustBecome(vmanual, h.green, {
infoString: "should become green after requstFrame()",
});
}
catch(err) {
ok(false, "checkDrawColorGreen failed: ", err);
}
drawing.stop();
}
async function checkRequestFrameOrderGuarantee() {
info("Checking that requestFrame() immediately after a drawColor() " +
"call results in the expected frame seen in the stream.");
await h.pixelMustBecome(vmanual, h.green, {
infoString: "should still be green",
});
h.drawColor(c, h.red); // 1. Draw canvas red
h.requestFrame(vmanual); // 2. Immediately request a frame
await h.pixelMustBecome(vmanual, h.red, {
infoString: "should become red after call order test",
});
}
async function checkDrawImageNotCleanRed() {
info("Checking that drawImage with not origin-clean image renders streams useless.");
const ctx = c.getContext('2d');
const notCleanRed = new Image();
await new Promise((resolve, reject) => {
notCleanRed.onload = resolve;
notCleanRed.onerror = () => reject(new Error("Failed to load tainted image."));
document.body.appendChild(notCleanRed);
});
const drawing = h.startDrawing(
() => ctx.drawImage(notCleanRed, 0, 0, c.width, c.height));
h.testNotClean(c);
try {
await h.pixelMustNotBecome(vauto, h.red, {
timeout: 1000,
infoString: "should not become red",
});
ok(h.isPixelNot(h.getPixel(vrate), h.red, 250),
"should not have become red");
await h.pixelMustBecome(vmanual, h.green, {
infoString: "should still be green",
});
h.requestFrame(vmanual);
await h.pixelMustNotBecome(vmanual, h.red, {
timeout: 1000,
infoString: "should not become red",
});
} catch(err) {
ok(false, "checkDrawImageNotCleanRed failed: ", err);
}
drawing.stop();
}
async function checkEndedOnStop() {
const promises = [vauto, vmanual, vrate].map(elem => {
elem.srcObject.getTracks()[0].stop();
return new Promise(resolve =>
elem.addEventListener("ended", function endedListener(event) {
ok(true, "Element " + elem.id + " ended.");
resolve();
elem.removeEventListener("ended", endedListener);
}));
});
await Promise.all(promises);
}
function finish() {
ok(true, 'Test complete.');
SimpleTest.finish();
}
(async () => {
await checkDrawColorInitialRed();
await checkDrawColorGreen();
await checkRequestFrameOrderGuarantee();
await checkDrawColorGreen(); // Restore video elements to green.
await checkDrawImageNotCleanRed();
await checkEndedOnStop();
finish();
})();
</script>