зеркало из https://github.com/mozilla/gecko-dev.git
54 строки
2.5 KiB
JavaScript
54 строки
2.5 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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/**
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* Test AudioNode#addAutomationEvent() checking automation values, also using
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* a curve as the last event to check duration spread.
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*/
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add_task(function* () {
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let { target, front } = yield initBackend(SIMPLE_CONTEXT_URL);
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let [_, [destNode, oscNode, gainNode]] = yield Promise.all([
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front.setup({ reload: true }),
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get3(front, "create-node")
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]);
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let t0 = 0, t1 = 0.1, t2 = 0.2, t3 = 0.3, t4 = 0.4, t5 = 0.6, t6 = 0.7, t7 = 1;
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let curve = [-1, 0, 1];
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yield oscNode.addAutomationEvent("frequency", "setValueAtTime", [0.2, t0]);
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yield oscNode.addAutomationEvent("frequency", "setValueAtTime", [0.3, t1]);
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yield oscNode.addAutomationEvent("frequency", "setValueAtTime", [0.4, t2]);
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yield oscNode.addAutomationEvent("frequency", "linearRampToValueAtTime", [1, t3]);
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yield oscNode.addAutomationEvent("frequency", "linearRampToValueAtTime", [0.15, t4]);
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yield oscNode.addAutomationEvent("frequency", "exponentialRampToValueAtTime", [0.75, t5]);
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yield oscNode.addAutomationEvent("frequency", "exponentialRampToValueAtTime", [0.05, t6]);
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// End with a curve here so we can get proper results on the last event (which takes into account
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// duration)
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yield oscNode.addAutomationEvent("frequency", "setValueCurveAtTime", [curve, t6, t7 - t6]);
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let { events, values } = yield oscNode.getAutomationData("frequency");
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is(events.length, 8, "8 recorded events returned.");
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is(values.length, 2000, "2000 value points returned.");
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checkAutomationValue(values, 0.05, 0.2);
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checkAutomationValue(values, 0.1, 0.3);
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checkAutomationValue(values, 0.15, 0.3);
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checkAutomationValue(values, 0.2, 0.4);
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checkAutomationValue(values, 0.25, 0.7);
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checkAutomationValue(values, 0.3, 1);
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checkAutomationValue(values, 0.35, 0.575);
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checkAutomationValue(values, 0.4, 0.15);
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checkAutomationValue(values, 0.45, 0.15 * Math.pow(0.75 / 0.15, 0.05 / 0.2));
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checkAutomationValue(values, 0.5, 0.15 * Math.pow(0.75 / 0.15, 0.5));
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checkAutomationValue(values, 0.55, 0.15 * Math.pow(0.75 / 0.15, 0.15 / 0.2));
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checkAutomationValue(values, 0.6, 0.75);
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checkAutomationValue(values, 0.65, 0.75 * Math.pow(0.05 / 0.75, 0.5));
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checkAutomationValue(values, 0.705, -1); // Increase this time a bit to prevent off by the previous exponential amount
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checkAutomationValue(values, 0.8, 0);
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checkAutomationValue(values, 0.9, 1);
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checkAutomationValue(values, 1, 1);
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yield removeTab(target.tab);
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});
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