30 lines
987 B
HTML
30 lines
987 B
HTML
<!DOCTYPE html>
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<html>
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<body>
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<canvas id="canvas"></canvas>
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<script src=/resources/testharness.js></script>
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<script src=/resources/testharnessreport.js></script>
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<script>
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promise_test(async t => {
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const canvas = document.getElementById("canvas");
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const ctx = canvas.getContext("2d");
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const stream = canvas.captureStream();
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t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
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const video = document.createElement("video");
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video.srcObject = stream;
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ctx.getImageData(0, 0, canvas.width, canvas.height);
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assert_equals(video.readyState, video.HAVE_NOTHING,
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"Video element was just created");
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// Wait a bit so the video element can update readyState in case of a frame.
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await new Promise(r => t.step_timeout(r, 100));
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assert_equals(video.readyState, video.HAVE_NOTHING,
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"Video element did not get a frame from the canvas");
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}, "CanvasRenderingContext2D.getImageData() does not lead to a frame being captured");
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</script>
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</body>
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</html>
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