| <!DOCTYPE html> |
| <html> |
| <head> |
| <script> |
| |
| let context; |
| let oscillator; |
| let stream; |
| let gain; |
| |
| function sendMessage(message) |
| { |
| try { |
| if (window.webkit) |
| window.webkit.messageHandlers.testHandler.postMessage(message); |
| else |
| console.log(`MESSAGE - ${message}`); |
| } catch(err) { |
| console.log(`failed to send message ${message}: ${err}`); |
| } |
| } |
| |
| function createWebAudioNode() |
| { |
| context = new AudioContext(); |
| |
| gain = new GainNode(context, {gain: 0.05}); |
| gain.connect(context.destination); |
| |
| oscillator = new OscillatorNode(context); |
| oscillator.connect(gain); |
| oscillator.start(); |
| } |
| |
| function disconnectWebAudioNode() |
| { |
| oscillator.stop(); |
| oscillator.disconnect(); |
| gain.disconnect(); |
| context.close(); |
| } |
| |
| async function startCapture() |
| { |
| stream = await navigator.mediaDevices.getUserMedia({ video: true, audio: { volume: 0.05 } }); |
| } |
| |
| function stopCapture() |
| { |
| stream.getTracks().forEach(track => track.stop()); |
| } |
| |
| async function playVideo() |
| { |
| let video = document.getElementsByTagName('video')[0]; |
| video.src = 'test-mse.mp4'; |
| video.volume = 0.05; |
| await video.play(); |
| sendMessage('playing'); |
| } |
| |
| function pauseVideo() |
| { |
| video = document.getElementsByTagName('video')[0].pause(); |
| } |
| </script> |
| <head> |
| |
| <body> |
| <video controls></video> |
| <br> |
| <button onclick="createWebAudioNode()">Create Audio Node</button> |
| <button onclick="disconnectWebAudioNode()">Disconnect Audio Node</button> |
| <br> |
| <button onclick="startCapture()">Start Capture</button> |
| <button onclick="stopCapture()">Stop Capture</button> |
| <br> |
| <button onclick="playVideo()">Play <video></button> |
| <button onclick="pauseVideo()">Pause <video></button> |
| </body> |
| </html> |
