Bug 1308438 - Part 10: Test AudioBufferSourceNode with negative playback rate and looping with specified start and end. r?dminor, r?padenot
MozReview-Commit-ID: 1Q0h1Wod3w4
--- a/dom/media/webaudio/test/mochitest.ini
+++ b/dom/media/webaudio/test/mochitest.ini
@@ -40,16 +40,17 @@ support-files =
[test_audioBufferSourceNodeEnded.html]
[test_audioBufferSourceNodeLazyLoopParam.html]
[test_audioBufferSourceNodeLoop.html]
[test_audioBufferSourceNodeLoopStartEnd.html]
[test_audioBufferSourceNodeLoopStartEndSame.html]
[test_audioBufferSourceNodeDetached.html]
[test_audioBufferSourceNodeNegativePlaybackRate.html]
[test_audioBufferSourceNodeNegativePlaybackRateLoop.html]
+[test_audioBufferSourceNodeNegativePlaybackRateLoopStartEnd.html]
[test_audioBufferSourceNodeNegativePlaybackRateResampling.html]
[test_audioBufferSourceNodePlaybackRateFromTwotoNegativeTwo.html]
[test_audioBufferSourceNodeZeroPlaybackRate.html]
skip-if = (toolkit == 'android' && debug) || os == 'win' # bug 1127845, bug 1138468
[test_audioBufferSourceNodeNoStart.html]
[test_audioBufferSourceNodeNullBuffer.html]
[test_audioBufferSourceNodeOffset.html]
skip-if = (toolkit == 'android') || debug #bug 906752
new file mode 100644
--- /dev/null
+++ b/dom/media/webaudio/test/test_audioBufferSourceNodeNegativePlaybackRateLoopStartEnd.html
@@ -0,0 +1,48 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test AudioBufferSourceNode negative playback rate with looping start end</title>
+ <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <script type="text/javascript" src="webaudio.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+var gTest = {
+ length: 2048 * 4,
+ numberOfChannels: 1,
+ createGraph: function(context) {
+ var buffer = context.createBuffer(1, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ buffer.getChannelData(0)[2048 - i - 1] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ }
+
+ var source = new AudioBufferSourceNode(context, {buffer: buffer, loop: true, loopStart: buffer.duration * 0.25, loopEnd: buffer.duration * 0.75 });
+ source.start(0, buffer.duration);
+ source.playbackRate.value = -1;
+ return source;
+ },
+ createExpectedBuffers: function(context) {
+ var expectedBuffer = context.createBuffer(1, 2048 * 4, context.sampleRate);
+ for (var i = 0; i < 1536; ++i) {
+ expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ }
+ for (var i = 0; i < 6; ++i) {
+ for (var j = 512; j < 1536; ++j) {
+ expectedBuffer.getChannelData(0)[1536 + i * 1024 + j - 512] = Math.sin(440 * 2 * Math.PI * j / context.sampleRate);
+ }
+ }
+ for (var j = 7680; j < 2048 * 4; ++j) {
+ expectedBuffer.getChannelData(0)[j] = Math.sin(440 * 2 * Math.PI * (j - 7168) / context.sampleRate);
+ }
+ return expectedBuffer;
+ },
+};
+
+runTest();
+</script>
+</pre>
+</body>
+</html>