test for
bug 1257718 r?padenot
MozReview-Commit-ID: 8MkfnpsQBKH
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -36043,16 +36043,22 @@
}
],
"web-animations/timing-model/animations/set-the-timeline-of-an-animation.html": [
{
"path": "web-animations/timing-model/animations/set-the-timeline-of-an-animation.html",
"url": "/web-animations/timing-model/animations/set-the-timeline-of-an-animation.html"
}
],
+ "webaudio/the-audio-api/the-audioparam-interface/setValueAtTime-within-block.html": [
+ {
+ "path": "webaudio/the-audio-api/the-audioparam-interface/setValueAtTime-within-block.html",
+ "url": "/webaudio/the-audio-api/the-audioparam-interface/setValueAtTime-within-block.html"
+ }
+ ],
"webaudio/the-audio-api/the-iirfilternode-interface/test-iirfilternode.html": [
{
"path": "webaudio/the-audio-api/the-iirfilternode-interface/test-iirfilternode.html",
"url": "/webaudio/the-audio-api/the-iirfilternode-interface/test-iirfilternode.html"
}
]
}
},
new file mode 100644
--- /dev/null
+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/setValueAtTime-within-block.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<title>Test setValueAtTime with start time not on a block boundary</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+promise_test(function() {
+ const bufferSize = 200;
+ const offset = 65;
+ const sampleRate = 48000;
+ const scheduledValue = -2.0;
+
+ var context = new OfflineAudioContext(1, bufferSize, sampleRate);
+
+ var gain = context.createGain();
+ gain.gain.setValueAtTime(scheduledValue, offset/sampleRate);
+ gain.connect(context.destination);
+
+ // Apply unit DC signal to gain node.
+ var source = context.createBufferSource();
+ source.buffer =
+ function() {
+ var buffer = context.createBuffer(1, 1, context.sampleRate);
+ buffer.getChannelData(0)[0] = 1.0;
+ return buffer;
+ }();
+ source.loop = true;
+ source.start();
+ source.connect(gain);
+
+ return context.startRendering().
+ then(function(buffer) {
+ assert_equals(buffer.length, bufferSize, "output buffer length");
+ var output = buffer.getChannelData(0);
+ var i = 0;
+ for (; i < offset; ++i) {
+ // "Its default value is 1."
+ assert_equals(output[i], 1.0, "default gain at sample " + i);
+ }
+ for (; i < buffer.length; ++i) {
+ // "If there are no more events after this SetValue event, then for
+ // t≥T0, v(t)=V, where T0 is the startTime parameter and V is the
+ // value parameter."
+ assert_equals(output[i], scheduledValue,
+ "scheduled value at sample " + i);
+ }
+ });
+});
+</script>