| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>media-source-append-remove-b-frame</title> |
| <script src="mock-media-source.js"></script> |
| <script src="../video-test.js"></script> |
| <script> |
| var source; |
| var sourceBuffer; |
| var initSegment; |
| |
| if (window.internals) |
| internals.initializeMockMediaSource(); |
| |
| function ibpSampleRun() { |
| // IBP in presentation order, IPB in decode order. |
| return concatenateSamples([ |
| makeASample(0, -1, 1, 1, 1, SAMPLE_FLAG.SYNC), // I |
| makeASample(2, 0, 1, 1, 1, SAMPLE_FLAG.NONE), // P |
| makeASample(1, 1, 1, 1, 1, SAMPLE_FLAG.NONE), // B |
| ]); |
| } |
| |
| window.addEventListener('load', async () => { |
| findMediaElement(); |
| source = new MediaSource(); |
| testExpected('source.readyState', 'closed'); |
| const sourceOpened = waitFor(source, 'sourceopen'); |
| |
| const videoSource = document.createElement('source'); |
| videoSource.type = 'video/mock; codecs=mock'; |
| videoSource.src = URL.createObjectURL(source); |
| video.appendChild(videoSource); |
| |
| await sourceOpened; |
| run('sourceBuffer = source.addSourceBuffer("video/mock; codecs=mock")'); |
| |
| initSegment = makeAInit(10, [makeATrack(1, 'mock', TRACK_KIND.VIDEO)]); |
| |
| run('sourceBuffer.appendBuffer(initSegment)'); |
| await waitFor(sourceBuffer, 'updateend'); |
| |
| run('sourceBuffer.appendBuffer(ibpSampleRun())'); |
| await waitFor(sourceBuffer, 'updateend'); |
| let enqueuedSamples = await internals.enqueuedSamplesForTrackID(sourceBuffer, 1); |
| enqueuedSamples.forEach(consoleWrite); |
| |
| run('sourceBuffer.remove(1, 2)'); |
| await waitFor(sourceBuffer, 'updateend'); |
| |
| // Even if .remove() sets trackBuffer.needsReenqueueing to true, reenqueueing will only happen after an append. |
| // So let's make an empty append. |
| run('sourceBuffer.appendBuffer(new Uint8Array())'); |
| await waitFor(sourceBuffer, 'updateend'); |
| |
| consoleWrite("The frame with presentation time [1, 2) should have been deleted from the buffered samples and " + |
| "a reenqueue must have happened. That frame should not have been enqueued."); |
| consoleWrite("Buffered:"); |
| bufferedSamples = await internals.bufferedSamplesForTrackId(sourceBuffer, 1); |
| bufferedSamples.forEach(consoleWrite); |
| consoleWrite("Enqueued:"); |
| enqueuedSamples = await internals.enqueuedSamplesForTrackID(sourceBuffer, 1); |
| enqueuedSamples.forEach(consoleWrite); |
| |
| endTest(); |
| }); |
| </script> |
| </head> |
| <body> |
| <video controls></video> |
| </body> |
| </html> |
