| <!DOCTYPE html> |
| <html> |
| <head> |
| <script> |
| let stream = null; |
| |
| function promptForCapture(constraints) |
| { |
| if (!window.internals) { |
| window.webkit.messageHandlers.testHandler.postMessage('test requires internals'); |
| return; |
| } |
| |
| window.internals.withUserGesture(() => { |
| navigator.mediaDevices.getDisplayMedia(constraints) |
| .then((s) => { |
| stream = s; |
| video.srcObject = stream; |
| if (window.webkit) |
| window.webkit.messageHandlers.testHandler.postMessage('allowed'); |
| }) |
| .catch((error) => { |
| if (window.webkit) |
| window.webkit.messageHandlers.testHandler.postMessage('denied'); |
| }); |
| }); |
| } |
| |
| function stop(kind) |
| { |
| if (!stream) |
| return; |
| |
| let activeTracks = []; |
| stream.getTracks().forEach(track => { |
| if (!kind || track.kind == kind) |
| track.stop(); |
| else |
| activeTracks.push(track); |
| }); |
| |
| if (!activeTracks.length) { |
| stream = null; |
| video.srcObject = null; |
| } |
| } |
| |
| function haveStream() |
| { |
| return stream !== null; |
| } |
| </script> |
| <head> |
| |
| <body> |
| <video id="video" controls></video> |
| <p> |
| <button onclick="stop()">Stop</button> |
| </p> |
| </body> |
| </html> |
