| <!doctype html> |
| <title>Test MessagePort while AudioContext is not running</title> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script> |
| const get_node_and_message = (context) => { |
| const node = new AudioWorkletNode(context, 'port-processor'); |
| return new Promise((resolve) => { |
| node.port.onmessage = (event) => resolve({node: node, event: event}); |
| }); |
| }; |
| const ping_for_message = (node) => { |
| return new Promise((resolve) => { |
| node.port.onmessage = resolve; |
| node.port.postMessage('ping'); |
| }); |
| }; |
| const modulePath = 'processors/port-processor.js'; |
| |
| promise_test(async () => { |
| const realtime = new AudioContext(); |
| await realtime.audioWorklet.addModule(modulePath); |
| await realtime.suspend(); |
| const currentTime = realtime.currentTime; |
| let {node, event} = await get_node_and_message(realtime); |
| assert_equals(event.data.timeStamp, currentTime, 'created message time'); |
| event = await ping_for_message(node); |
| assert_equals(event.data.timeStamp, currentTime, 'pong time'); |
| }, 'realtime suspended'); |
| |
| let offline; |
| promise_test(async () => { |
| offline = new OfflineAudioContext({length: 128 + 1, sampleRate: 16384}); |
| await offline.audioWorklet.addModule(modulePath); |
| assert_equals(offline.currentTime, 0, 'time before start'); |
| let {node, event} = await get_node_and_message(offline); |
| assert_equals(event.data.timeStamp, 0, 'created time before start'); |
| event = await ping_for_message(node); |
| assert_equals(event.data.timeStamp, 0, 'pong time before start'); |
| }, 'offline before start'); |
| |
| promise_test(async () => { |
| await offline.startRendering(); |
| const expected = 2 * 128 / offline.sampleRate; |
| assert_equals(offline.currentTime, expected, 'time on complete'); |
| let {node, event} = await get_node_and_message(offline); |
| assert_equals(event.data.timeStamp, expected, "created time on complete"); |
| event = await ping_for_message(node); |
| assert_equals(event.data.timeStamp, expected, "pong time on complete"); |
| }, 'offline on complete'); |
| </script> |
