| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>media-source-real-audio-append-buffer</title> |
| <script src="mp4-generator.js"></script> |
| <script src="../video-test.js"></script> |
| <script> |
| // Tests basic audio-only MSE append through the real MP4/AAC parser pipeline. |
| // The audio path through AudioVideoRendererAVFObjC has its own set of bugs |
| // (rate change flush, encryption key serialization) distinct from video. |
| |
| var source; |
| var sourceBuffer; |
| |
| async function runTest() { |
| findMediaElement(); |
| |
| if (!MediaSource.isTypeSupported(MP4.AUDIO_TYPE)) { |
| consoleWrite('SKIPPED: ' + MP4.AUDIO_TYPE + ' is not supported'); |
| return; |
| } |
| |
| source = new MediaSource(); |
| video.src = URL.createObjectURL(source); |
| await waitFor(source, 'sourceopen'); |
| |
| sourceBuffer = source.addSourceBuffer(MP4.AUDIO_TYPE); |
| |
| var initData = MP4.initSegment({ |
| timescale: 44100, |
| tracks: [{ id: 1, type: 'audio', timescale: 44100 }] |
| }); |
| sourceBuffer.appendBuffer(initData); |
| testExpected('sourceBuffer.updating', true); |
| await waitFor(sourceBuffer, 'updateend'); |
| testExpected('sourceBuffer.updating', false); |
| |
| // 4 audio frames, each 1024 samples at 44100 Hz (~23.2ms each, ~93ms total) |
| // Use round durations in timescale units for clean buffered ranges. |
| var media = MP4.mediaSegment({ |
| sequenceNumber: 1, |
| tracks: [{ |
| id: 1, type: 'audio', baseDecodeTime: 0, |
| samples: [ |
| { duration: 44100, isSync: true }, |
| { duration: 44100, isSync: true }, |
| { duration: 44100, isSync: true }, |
| { duration: 44100, isSync: true }, |
| ] |
| }] |
| }); |
| sourceBuffer.appendBuffer(media); |
| testExpected('sourceBuffer.updating', true); |
| await waitFor(sourceBuffer, 'updateend'); |
| testExpected('sourceBuffer.updating', false); |
| |
| // 4 frames × 44100 samples / 44100 Hz = 4 seconds |
| testExpected('sourceBuffer.buffered.length', 1); |
| testExpectedEqualWithTolerance('sourceBuffer.buffered.start(0)', 0, 0.05); |
| testExpectedEqualWithTolerance('sourceBuffer.buffered.end(0)', 4, 0.05); |
| |
| testExpected('sourceBuffer.audioTracks.length', 1); |
| testExpected('source.activeSourceBuffers.length', 1); |
| } |
| |
| window.addEventListener('load', event => { |
| runTest().then(endTest).catch(failTest); |
| }); |
| </script> |
| </head> |
| <body> |
| <video></video> |
| </body> |
| </html> |
