Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-11-26 06:11:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bug 1141282 - Test the type of the attributes of the DynamicCompressoNode, and make sure it returns sane values. r=ehsan

Browse Source
This commit is contained in:
Paul Adenot 2015-03-12 14:36:40 +01:00
parent ada66aa858
commit 1a25b47c65
1 changed files with 26 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
dom/media/webaudio/test/test_dynamicsCompressorNode.html
View File

@ -16,21 +16,15 @@ function near(a, b, msg) {
SimpleTest.waitForExplicitFinish();
addLoadEvent(function() {
var context = new AudioContext();
var buffer = context.createBuffer(1, 2048, context.sampleRate);
for (var i = 0; i < 2048; ++i) {
buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
}
var destination = context.destination;
var source = context.createBufferSource();
var osc = context.createOscillator();
var sp = context.createScriptProcessor();
var compressor = context.createDynamicsCompressor();
source.buffer = buffer;
source.connect(compressor);
compressor.connect(destination);
osc.connect(compressor);
osc.connect(sp);
compressor.connect(context.destination);
is(compressor.channelCount, 2, "compressor node has 2 input channels by default");
is(compressor.channelCountMode, "explicit", "Correct channelCountMode for the compressor node");
@ -38,22 +32,36 @@ addLoadEvent(function() {
// Verify default values
with (compressor) {
ok(threshold instanceof AudioParam, "treshold is an AudioParam");
near(threshold.defaultValue, -24, "Correct default value for threshold");
ok(knee instanceof AudioParam, "knee is an AudioParam");
near(knee.defaultValue, 30, "Correct default value for knee");
ok(ratio instanceof AudioParam, "knee is an AudioParam");
near(ratio.defaultValue, 12, "Correct default value for ratio");
is(typeof reduction, "number", "reduction is a number");
near(reduction, 0, "Correct default value for reduction");
ok(attack instanceof AudioParam, "attack is an AudioParam");
near(attack.defaultValue, 0.003, "Correct default value for attack");
ok(release instanceof AudioParam, "release is an AudioParam");
near(release.defaultValue, 0.25, "Correct default value for release");
}
source.start(0);
SimpleTest.executeSoon(function() {
source.stop(0);
source.disconnect();
compressor.disconnect();
compressor.threshold.value = -80;
SimpleTest.finish();
});
osc.start();
var iteration = 0;
sp.onaudioprocess = function(e) {
if (iteration > 10) {
ok(compressor.reduction < 0,
"Feeding a full-scale sine to a compressor should result in an db" +
"reduction.");
sp.onaudioprocess = null;
osc.stop(0);
SimpleTest.finish();
}
iteration++;
}
});
</script>