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Issue 2060833002:
Implementation of 'AudioContext.getOutputTimestamp' method (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master| Index: third_party/WebKit/ManualTests/webaudio/audiooutputtimestamp.html |
| diff --git a/third_party/WebKit/ManualTests/webaudio/audiooutputtimestamp.html b/third_party/WebKit/ManualTests/webaudio/audiooutputtimestamp.html |
| new file mode 100644 |
| index 0000000000000000000000000000000000000000..ae26ec35c2cd71cabd3b0b97fd91a22d5eec0a18 |
| --- /dev/null |
| +++ b/third_party/WebKit/ManualTests/webaudio/audiooutputtimestamp.html |
| @@ -0,0 +1,73 @@ |
| +<!doctype html> |
| +<html> |
| + <head> |
| + <title>Test AudioContext.getOutputTimestamp() method</title> |
| + <style type="text/css"> |
| + body { |
| + margin: 2em; |
| + } |
| + .manual-test-ui { |
| + font-family: Arial; |
| + padding: 1em; |
| + border: 1px solid #999; |
| + } |
| + .manual-test-ui button { |
| + padding: 1em; |
| + font-size: 1em; |
| + } |
| + .manual-test-ui div { |
| + padding: 10px; |
| + font-size: 1.5em; |
| + } |
| + </style> |
| + </head> |
| + |
| + <body> |
| + <h1>Test AudioContext.getOutputTimestamp() method</h1> |
| + |
| + <p>Tests the values returned from AudioContext.getOutputTimestamp()</p> |
| + |
| + <p>Press "Start" to run the test. You should hear a sine tone.</p> |
| + |
| + <p>Press "Refresh" to fetch the fresh output audio timestamp values |
| + and compare them to 'AudioContext.currentTime' and 'Performance.now()'. </p> |
|
Raymond Toy
2016/11/04 17:51:39
Please give some indication of what the expected r
Mikhail
2016/11/28 15:15:59
Done.
|
| + |
| + <p><b>Note: </b> The "AudioTimestamp" Runtime Enabled Feature must be enabled: |
| + i.e. use '--enable-blink-features=AudioTimestamp' in command-line switches for |
| + chrome/content_shell.</p> |
| + |
| + <div class="manual-test-ui"> |
| + <div id="audioTime"></div> |
| + <div id="performanceTime"></div> |
| + <div id="timestampContextTime"></div> |
| + <div id="timestampPerformanceTime"></div> |
| + |
| + <button id="startButton" onclick="start()">Start</button> |
| + <button id="valuesButton" onclick="refreshValues()">Refresh Values</button> |
| + <button onclick="context.suspend()">Suspend</button> |
| + <button onclick="context.resume()">Resume</button> |
| + </div> |
| + |
| + <script type="text/javascript"> |
| + var context = new AudioContext(); |
| + |
| + refreshValues(); |
| + |
| + function start() { |
| + document.querySelector('#startButton').disabled = true; |
| + let oscillator = context.createOscillator(); |
| + oscillator.connect(context.destination); |
| + oscillator.start(); |
| + } |
| + |
| + function refreshValues() { |
| + document.querySelector("#audioTime").innerHTML = "context.currentTime: " + context.currentTime; |
| + document.querySelector("#performanceTime").innerHTML = "performance.now(): " + performance.now(); |
| + |
| + let timestamp = context.getOutputTimestamp(); |
| + document.querySelector("#timestampContextTime").innerHTML = "timestamp audio: " + timestamp.contextTime; |
| + document.querySelector("#timestampPerformanceTime").innerHTML = "timestamp performance: " + timestamp.performanceTime; |
| + } |
| + </script> |
| + </body> |
| +</html> |
