| <!DOCTYPE html> |
| <body><span>click me</span></body> |
| <script> |
| // Setup the flags before the test is run. |
| internals.settings.setAutoplayPolicy('document-user-activation-required'); |
| internals.runtimeFlags.autoplayIgnoresWebAudioEnabled = false; |
| |
| function synthesizeClick(callback) { |
| const elementBoundingRect = document.body.getBoundingClientRect(); |
| const xPos = elementBoundingRect.left + elementBoundingRect.width / 2; |
| const yPos = elementBoundingRect.top + elementBoundingRect.height / 2; |
| const leftButton = 0; |
| |
| chrome.gpuBenchmarking.pointerActionSequence([ |
| { |
| source: 'mouse', |
| actions: [ |
| { name: 'pointerMove', x: xPos, y: yPos }, |
| { name: 'pointerDown', x: xPos, y: yPos, button: leftButton }, |
| { name: 'pointerUp', button: leftButton } |
| ] |
| } |
| ], callback); |
| } |
| |
| // AudioContext will start as suspended when lacking a user gesture. |
| var audioContext = new AudioContext(); |
| window.parent.postMessage({ msg: 'initialState', value: audioContext.state }, |
| '*'); |
| |
| // OfflineAudioContext has no user gesture requirement but is always suspended. |
| var offlineAudioContext = new OfflineAudioContext(1, 512, 3000); |
| window.parent.postMessage({ msg: 'initialOfflineState', |
| value: offlineAudioContext.state }, '*'); |
| |
| // Calling 'resume()' will fail to start the AudioContext. |
| audioContext.resume(); |
| window.parent.postMessage({ msg: 'afterResume', value: audioContext.state }, |
| '*'); |
| |
| // Calling 'start()' will fail to start the AudioContext associated. |
| var oscillator = audioContext.createOscillator(); |
| oscillator.type = 'square'; |
| oscillator.frequency.value = 2000; |
| oscillator.connect(audioContext.destination); |
| oscillator.start(); |
| window.parent.postMessage({ msg: 'afterOscillator', value: audioContext.state }, |
| '*'); |
| |
| var otherAudioContext = new AudioContext(); |
| |
| synthesizeClick(async _ => { |
| // Calling 'resume()' from a click event will start the audio context. |
| await audioContext.resume(); |
| window.parent.postMessage({ msg: 'stateAfterClick', |
| value: audioContext.state }, '*'); |
| |
| window.parent.postMessage({ msg: 'stateOtherContextAfterClick', |
| value: otherAudioContext.state }, '*'); |
| |
| synthesizeClick(_ => { |
| var oscillator = otherAudioContext.createOscillator(); |
| oscillator.type = 'square'; |
| oscillator.frequency.value = 2000; |
| oscillator.connect(otherAudioContext.destination); |
| |
| // Creating an AudioContext from a click event will start it. |
| var lastAudioContext = new AudioContext(); |
| window.parent.postMessage({ msg: 'stateCreatedAfterClick', |
| value: lastAudioContext.state }, '*'); |
| |
| window.parent.postMessage({ msg: 'done' }, '*'); |
| }); |
| }); |
| </script> |
