| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>MediaStream Insertable Streams - Video</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| |
| async function getVideoFrame() { |
| const stream = await navigator.mediaDevices.getUserMedia({video: true}); |
| const input_track = stream.getTracks()[0]; |
| const processor = new MediaStreamTrackProcessor(input_track); |
| const reader = processor.readable.getReader(); |
| const result = await reader.read(); |
| input_track.stop(); |
| return result.value; |
| } |
| |
| promise_test(async t => { |
| const videoFrame = await getVideoFrame(); |
| const originalWidth = videoFrame.displayWidth; |
| const originalHeight = videoFrame.displayHeight; |
| const originalTimestamp = videoFrame.timestamp; |
| const generator = new MediaStreamTrackGenerator({kind: 'video'}); |
| |
| // Use a MediaStreamTrackProcessor as a sink for |generator| to verify |
| // that |processor| actually forwards the frames written to its writable |
| // field. |
| const processor = new MediaStreamTrackProcessor(generator); |
| const reader = processor.readable.getReader(); |
| const readerPromise = new Promise(async resolve => { |
| const result = await reader.read(); |
| assert_equals(result.value.displayWidth, originalWidth); |
| assert_equals(result.value.displayHeight, originalHeight); |
| assert_equals(result.value.timestamp, originalTimestamp); |
| resolve(); |
| }); |
| |
| generator.writable.getWriter().write(videoFrame); |
| return readerPromise; |
| }, 'MediaStreamTrackGenerator forwards frames to sink'); |
| |
| </script> |
| </body> |
| </html> |
