content/media/test/test_playback_rate.html@44a2da4a2ab2
content/media/test/test_playback_rate.html
Fri, 16 Jan 2015 04:50:19 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 04:50:19 +0100
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
- permissions
- -rw-r--r--
Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32
1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <title>Test for the playbackRate property </title>
5 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
6 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
7 <script type="text/javascript" src="manifest.js"></script>
8 </head>
9 <body>
10 <pre id="test">
11 <script class="testbody" type='application/javascript;version=1.8'>
13 SimpleTest.expectAssertions(0, 2);
15 if (navigator.platform.startsWith("Win")) {
16 SimpleTest.expectAssertions(0, 1);
17 } else if (navigator.platform.startsWith("Mac")) {
18 SimpleTest.expectAssertions(0, 2);
19 }
21 let manager = new MediaTestManager;
23 function rangeCheck(lhs, rhs, threshold) {
24 var diff = Math.abs(lhs - rhs);
25 if (diff < threshold) {
26 return true;
27 }
28 return false;
29 }
31 function checkPlaybackRate(wallclock, media, expected, threshold) {
32 if (rangeCheck(media / wallclock, expected, threshold)) {
33 return true;
34 }
35 return false;
36 }
38 // Those value are expected to match those at the top of HTMLMediaElement.cpp.
39 let VERY_SLOW_RATE = 0.1,
40 SLOW_RATE = 0.25,
41 FAST_RATE = 5,
42 VERY_FAST_RATE = 20,
43 NULL_RATE = 0.0;
45 function ontimeupdate(e) {
46 var t = e.target;
47 if (t.gotEnded) {
48 return;
49 }
50 t.testedForSlowdown = true;
51 if (t.currentTime > t.duration / 2) {
52 t.oldCurrentTime = t.currentTime;
53 t.timestamp = Date.now();
54 var delta = t.oldCurrentTime,
55 delta_wallclock = (t.timestamp - t.startTimestamp - t.bufferingTime) / 1000;
57 t.mozPreservesPitch = false;
58 is(t.mozPreservesPitch, false, "If we disable the pitch preservation, it should appear as such.");
60 t.bufferingTime = 0;
62 is(t.playbackRate, SLOW_RATE,
63 "The playback rate shoud be "+SLOW_RATE+"." + t.token);
64 ok(checkPlaybackRate(delta_wallclock, delta, SLOW_RATE, 0.25), "We are effectively slowing down playback. (" + delta_wallclock + ", " + delta + ") for " + t.token);
65 t.removeEventListener("timeupdate", ontimeupdate);
66 t.addEventListener("pause", onpaused);
67 t.playbackRate = NULL_RATE;
68 t.oldCurrentTime = t.currentTime;
69 setTimeout(function() {
70 afterNullPlaybackRate(e);
71 }, 100);
72 }
73 }
75 function onpaused(e) {
76 var t = e.target;
77 t.pausedReceived = true;
78 }
80 function afterNullPlaybackRate(e) {
81 var t = e.target;
83 t.testedForNull = true;
85 if (t.gotEnded) {
86 return;
87 }
88 // The currentTime won't be perfectly equal because of the latency
89 // compensation. We expect no more that 300ms difference.
90 let THRESHOLD = 0.3;
91 ok(rangeCheck(t.currentTime, t.oldCurrentTime, THRESHOLD), "Current time should not change when playbackRate is null (" + t.currentTime + " " + t.oldCurrentTime + ").");
92 ok(!t.paused, "The element should not be in paused state.");
93 t.removeEventListener("paused", onpaused);
94 is(t.pausedReceived, undefined, "Paused event should not have been received.");
95 t.timestamp = Date.now();
96 t.oldCurrentTime = t.currentTime;
97 t.playbackRate = VERY_FAST_RATE;
98 is(t.playbackRate, FAST_RATE, "Playback rate should be clamped to " + FAST_RATE + ".");
99 }
101 function onended(e) {
102 var t = e.target,
103 playtime = (Date.now() - t.timestamp - t.bufferingTime) / 1000,
104 mediaTime = t.duration - t.oldCurrentTime;
106 if (!(t.testedForSlowdown && t.testedForNull)) {
107 t.gotEnded = true;
108 t.skippedFastPart = true;
109 }
111 t.bufferingTime = 0;
112 // We got "ended" too early, skip these tests.
113 if (t.testedForSlowdown && t.testedForNull) {
114 is(t.playbackRate, FAST_RATE, "The playback rate should still be "+FAST_RATE+".");
115 ok(!t.muted, "The audio should be muted when playing at high speed, but should not appear as such.");
116 is(t.currentTime, t.duration, "Current time should be equal to the duration (not change by playback rate).");
117 }
118 finish_test(t);
119 }
121 function onratechange(e) {
122 if (!e.target.ratechangecount) {
123 e.target.ratechangecount = 0;
124 }
125 e.target.ratechangecount++;
126 }
128 function finish_test(element) {
129 if (element.parentNode)
130 element.parentNode.removeChild(element);
131 element.src="";
132 manager.finished(element.token);
133 }
135 // These two functions handle the case when the playback pauses for buffering. It
136 // adjusts the timestamps to be accurate. Despite the fact that the web servers
137 // is supposed to be on the same machine, buffering pauses can occur (rarely,
138 // but still).
139 function onplaying(e) {
140 var t = e.target;
141 if (t.bufferingTimestamp != undefined) {
142 t.bufferingTime += (Date.now() - t.bufferingTimestamp);
143 t.bufferingTimestamp = undefined;
144 }
145 }
147 function onwaiting(e) {
148 var t = e.target;
149 t.bufferingTimestamp = Date.now();
150 }
152 function onvolumechange(e) {
153 ok(false, "We should not receive a volumechange event when changing the playback rate.");
154 }
156 function startTest(test, token) {
157 let elemType = /^audio/.test(test.type) ? "audio" : "video";
158 let element = document.createElement(elemType);
159 element.src = test.name;
160 element.preload = "metadata";
161 element.token = token;
162 element.controls = true;
163 element.bufferingTime = 0;
164 document.body.appendChild(element);
165 element.addEventListener("ratechange", onratechange);
166 element.addEventListener("timeupdate", ontimeupdate);
167 element.addEventListener("ended", onended);
168 element.addEventListener("waiting", onwaiting);
169 element.addEventListener("playing", onplaying);
170 element.addEventListener("volumechange", onvolumechange);
171 manager.started(token);
172 element.startTimestamp = Date.now();
173 is(element.mozPreservesPitch, true, "Pitch preservation should be enabled by default.");
174 element.addEventListener("loadedmetadata", function() {
175 is(element.playbackRate, 1.0, "playbackRate should be initially 1.0");
176 is(element.defaultPlaybackRate, 1.0, "defaultPlaybackRate should be initially 1.0");
177 element.playbackRate = VERY_SLOW_RATE;
178 is(element.playbackRate, SLOW_RATE, "PlaybackRate should be clamped to " + SLOW_RATE + ".");
179 element.play();
180 element.playbackRate = SLOW_RATE;
181 });
182 }
184 manager.runTests(gPlayedTests, startTest);
186 </script>
187 </pre>
188 <div id="elements">
189 </div>
190 </body>
191 </html>
