| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>media-source-timestampoffset-then-zero</title> |
| <script src="mock-media-source.js"></script> |
| <script src="../video-test.js"></script> |
| <script> |
| var source; |
| var sourceBuffer; |
| var bufferedSamples; |
| |
| if (window.internals) |
| internals.initializeMockMediaSource(); |
| |
| function makeSimpleAudio(start, end, generation) { |
| const init = makeAInit(2, [makeATrack(1, 'mock', TRACK_KIND.VIDEO)]); |
| |
| const samples = []; |
| for (let time = start; time < end; time++) |
| samples.push(makeASample(time, time, 1, 1, 1, SAMPLE_FLAG.SYNC, generation)); |
| |
| return concatenateSamples([init].concat(samples)); |
| } |
| |
| window.addEventListener('load', async () => { |
| findMediaElement(); |
| source = new MediaSource(); |
| testExpected('source.readyState', 'closed'); |
| const sourceOpened = waitFor(source, 'sourceopen'); |
| |
| const videoSource = document.createElement('source'); |
| videoSource.type = 'audio/mock; codecs=mock'; |
| videoSource.src = URL.createObjectURL(source); |
| video.appendChild(videoSource); |
| |
| await sourceOpened; |
| run('sourceBuffer = source.addSourceBuffer("video/mock; codecs=mock")'); |
| |
| run('sourceBuffer.timestampOffset = 5'); |
| run('sourceBuffer.appendBuffer(makeSimpleAudio(0, 20, 0))'); |
| await waitFor(sourceBuffer, 'updateend'); |
| |
| bufferedSamples = internals.bufferedSamplesForTrackID(sourceBuffer, 1); |
| consoleWrite("After first append:"); |
| bufferedSamples.forEach(consoleWrite); |
| |
| run('sourceBuffer.timestampOffset = 0'); |
| run('sourceBuffer.appendBuffer(makeSimpleAudio(0, 20, 1))'); |
| await waitFor(sourceBuffer, 'updateend'); |
| |
| bufferedSamples = internals.bufferedSamplesForTrackID(sourceBuffer, 1); |
| consoleWrite("After second append:"); |
| bufferedSamples.forEach(consoleWrite); |
| |
| endTest(); |
| }); |
| </script> |
| </head> |
| <body> |
| <video controls></video> |
| </body> |
| </html> |
