| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>media-source-append-acb-no-frame-lost</title> |
| <script src="mock-media-source.js"></script> |
| <script src="../video-test.js"></script> |
| <script> |
| var source; |
| var sourceBuffer; |
| var fullAppend; |
| var bufferedSamples; |
| |
| function parseSampleDescriptionElements(string) { |
| const itemsString = /\s*\{(.*)\}\s*$/.exec(string)[1]; |
| const ret = {}; |
| for (let itemString of itemsString.split(/,\s*/)) { |
| const match = /([^(]+)\(([^)]+)\)/.exec(itemString); |
| ret[match[1]] = match[2]; |
| } |
| return ret; |
| } |
| |
| function roundMediaTimeDescription(string) { |
| const match = /\{\d+\/\d+ = (\d+\.\d+)\}/.exec(string); |
| return parseFloat(match[1]).toFixed(3); |
| } |
| |
| function simplifySampleDescription(sampleDescription) { |
| // Round the timestamps and remove some fields to hopefully eliminate differences between platforms that are not |
| // relevant for this test. |
| const items = parseSampleDescriptionElements(sampleDescription); |
| return `{PTS(${roundMediaTimeDescription(items["PTS"])}), DTS(${roundMediaTimeDescription(items["DTS"]) |
| }), duration(${roundMediaTimeDescription(items["duration"])}), presentationSize(${items["presentationSize"]})}`; |
| } |
| |
| 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/mp4; codecs="avc1.4d401f"'; |
| videoSource.src = URL.createObjectURL(source); |
| video.appendChild(videoSource); |
| |
| await sourceOpened; |
| run('sourceBuffer = source.addSourceBuffer(\'video/mp4; codecs="avc1.4d401f"\')'); |
| |
| const chunkSize = 1e6; |
| |
| fullAppend = await (await fetch("content/test-green-6s-320x240.mp4")).arrayBuffer(); |
| for (let i = 0; i < fullAppend.byteLength; i += chunkSize) { |
| sourceBuffer.appendBuffer(fullAppend.slice(i, Math.min(fullAppend.byteLength, i + chunkSize))); |
| await waitFor(sourceBuffer, 'updateend'); |
| } |
| consoleWrite("Appended 6 seconds of 320x240"); |
| |
| fullAppend = await (await fetch("content/test-red-3s-480x360.mp4")).arrayBuffer(); |
| for (let i = 0; i < fullAppend.byteLength; i += chunkSize) { |
| sourceBuffer.appendBuffer(fullAppend.slice(i, Math.min(fullAppend.byteLength, i + chunkSize))); |
| await waitFor(sourceBuffer, 'updateend'); |
| } |
| consoleWrite("Replaced first 3 seconds with 480x360"); |
| |
| const trackId = sourceBuffer.videoTracks.item(0).id; |
| bufferedSamples = await internals.bufferedSamplesForTrackId(sourceBuffer, trackId); |
| consoleWrite(bufferedSamples.map(simplifySampleDescription).join("<br>")); |
| |
| endTest(); |
| }); |
| </script> |
| </head> |
| <body> |
| <video controls></video> |
| </body> |
| </html> |
