Bug 1472550 - Adjust a web platform test slightly to test that the parameter is a-rate. r=karlt
MozReview-Commit-ID: AiOHVaXVEBA
--- a/testing/web-platform/tests/webaudio/the-audio-api/the-pannernode-interface/test-pannernode-automation.html
+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-pannernode-interface/test-pannernode-automation.html
@@ -1,30 +1,35 @@
<!doctype html>
<meta charset=utf-8>
<title></title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
+
+// This value is purposefuly not aligned on a 128-block boundary so that we test
+// that the PannerNode position audioparam is a-rate.
+const POSITION_CHANGE_FRAME = 1111;
+
promise_test(function(t) {
var ac = new OfflineAudioContext(2, 2048, 44100);
var panner = ac.createPanner();
panner.positionX.value = -1;
panner.positionY.value = -1;
panner.positionZ.value = 1;
- panner.positionX.setValueAtTime(1, 1024/ac.sampleRate);
+ panner.positionX.setValueAtTime(1, POSITION_CHANGE_FRAME/ac.sampleRate);
var osc = ac.createOscillator();
osc.connect(panner);
panner.connect(ac.destination);
osc.start()
return ac.startRendering().then(function(buffer) {
var left = buffer.getChannelData(0);
var right = buffer.getChannelData(1);
for (var i = 0; i < 2048; ++i) {
- if (i < 1024) {
+ if (i < POSITION_CHANGE_FRAME) {
assert_true(Math.abs(left[i]) >= Math.abs(right[i]), "index " + i + " should be on the left");
} else {
assert_true(Math.abs(left[i]) < Math.abs(right[i]), "index " + i + " should be on the right");
}
}
});
}, "PannerNode AudioParam automation works properly");