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bug 1208318 ensure that currentTime has advanced sufficiently to easily detect failure r=padenot

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This commit is contained in:
Karl Tomlinson 2015-09-29 13:39:24 +13:00
parent c3b87ed5e1
commit 20544ad2ee
1 changed files with 31 additions and 25 deletions
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56
dom/media/webaudio/test/test_scriptProcessorNode_playbackTime1.html
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@ -10,35 +10,41 @@
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout(
"This test needs to wait until AudioDestinationNode has started has " +
"accumulated some 'extra' time.");
var context = new AudioContext();
const delay = 0.1;
setTimeout(
function() {
const processorBufferLength = 256;
// |currentTime| may include double precision floating point
// rounding errors, so round to nearest integer sample to ignore these.
var minimumPlaybackSample =
Math.round(context.currentTime * context.sampleRate) +
processorBufferLength;
var sp = context.createScriptProcessor(processorBufferLength);
sp.connect(context.destination);
sp.onaudioprocess =
function(e) {
is(e.inputBuffer.length, processorBufferLength,
"expected buffer length");
var playbackSample = Math.round(e.playbackTime * context.sampleRate)
ok(playbackSample >= minimumPlaybackSample,
"playbackSample " + playbackSample +
" beyond expected minimum " + minimumPlaybackSample);
sp.onaudioprocess = null;
SimpleTest.finish();
};
}, 1000 * delay);
function doTest() {
const processorBufferLength = 256;
// |currentTime| may include double precision floating point
// rounding errors, so round to nearest integer sample to ignore these.
var minimumPlaybackSample =
Math.round(context.currentTime * context.sampleRate) +
processorBufferLength;
var sp = context.createScriptProcessor(processorBufferLength);
sp.connect(context.destination);
sp.onaudioprocess =
function(e) {
is(e.inputBuffer.length, processorBufferLength,
"expected buffer length");
var playbackSample = Math.round(e.playbackTime * context.sampleRate)
ok(playbackSample >= minimumPlaybackSample,
"playbackSample " + playbackSample +
" beyond expected minimum " + minimumPlaybackSample);
sp.onaudioprocess = null;
SimpleTest.finish();
};
}
// Wait until AudioDestinationNode has accumulated enough 'extra' time so that
// a failure would be easily detected.
(function waitForExtraTime() {
if (context.currentTime < delay) {
SimpleTest.executeSoon(waitForExtraTime);
} else {
doTest();
}
})();
</script>
</pre>