| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="../resources/js-test-pre.js"></script> |
| <script> |
| description("Tests silent WebAudio rendering in hidden pages."); |
| jsTestIsAsync = true; |
| |
| let counter = 0; |
| document.onvisibilitychange = async function() { |
| if (!counter) { |
| counter = 1; |
| shouldBeTrue("document.hidden"); |
| shouldBe("context.state", "'running'"); |
| showPage(); |
| return; |
| } |
| shouldBeFalse("document.hidden"); |
| shouldBe("context.state", "'running'"); |
| finishJSTest(); |
| } |
| |
| function showPage() |
| { |
| debug("* Setting page visibility to visible"); |
| if (window.internals) |
| internals.setPageVisibility(true); |
| } |
| |
| function hidePage() |
| { |
| debug("* Setting page visibility to hidden"); |
| if (window.internals) |
| internals.setPageVisibility(false); |
| } |
| |
| onload = function() { |
| context = new AudioContext(); |
| |
| audioElement = document.createElement("audio"); |
| audioElement.loop = true; |
| audioElement.muted = true; |
| audioElement.src = "../media/content/test.wav"; |
| source = context.createMediaElementSource(audioElement); |
| |
| var gainNode = context.createGain(); |
| source.connect(gainNode); |
| gainNode.connect(context.destination); |
| gainNode.gain.value = 0; // Mute. |
| |
| shouldBecomeEqual("context.state", "'running'", hidePage); |
| } |
| </script> |
| <script src="../resources/js-test-post.js"></script> |
| </body> |
| </html> |
