Chromium Code Reviews Chromium Code Reviews
Issue 937643006:
Pepper: add video_encoder example (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@bbudge-ppb-video-encoder-impl| OLD | NEW |
|---|---|
| (Empty) | |
| 1 <!DOCTYPE html> | |
| 2 <html> | |
| 3 <!-- | |
| 4 Copyright 2014 The Chromium Authors. All rights reserved. | |
|
bbudge
2015/02/19 21:54:38
nit: 2015
llandwerlin-old
2015/02/27 14:19:44
Done.
| |
| 5 Use of this source code is governed by a BSD-style license that can be | |
| 6 found in the LICENSE file. | |
| 7 --> | |
| 8 <head> | |
| 9 <title>Video Encoder Example</title> | |
| 10 <style type="text/css"> | |
| 11 #video { | |
| 12 position: fixed; | |
| 13 } | |
| 14 #plugin { | |
| 15 position: fixed; | |
| 16 } | |
| 17 </style> | |
| 18 <script type="text/javascript"> | |
| 19 var plugin; | |
| 20 var track; | |
| 21 var video; | |
| 22 | |
| 23 function success(stream) { | |
| 24 track = stream.getVideoTracks()[0]; | |
| 25 video.src = URL.createObjectURL(stream); | |
| 26 video.play(); | |
| 27 | |
| 28 plugin.postMessage({ | |
| 29 command: 'start', | |
| 30 track: track | |
| 31 }); | |
| 32 } | |
| 33 | |
| 34 function failure(e) { | |
| 35 console.log("Error: ", e); | |
| 36 } | |
| 37 | |
| 38 function startRecord() { | |
| 39 console.log("starting record"); | |
| 40 navigator.webkitGetUserMedia({audio: false, video: true}, success, failure ); | |
|
bbudge
2015/02/19 21:54:38
nit: line length > 80
llandwerlin-old
2015/02/27 14:19:44
Done.
| |
| 41 } | |
| 42 | |
| 43 function stopRecord() { | |
| 44 plugin.postMessage({ | |
| 45 command: "stop" | |
| 46 }); | |
| 47 var video = document.getElementById('video'); | |
| 48 video.pause(); | |
| 49 track.stop(); | |
| 50 } | |
| 51 | |
| 52 function saveBlob(blob) { | |
| 53 var blobUrl = URL.createObjectURL(blob); | |
| 54 window.location = blobUrl; | |
| 55 } | |
| 56 | |
| 57 function handleMessage(msg) { | |
| 58 if (msg.data.name == 'started') { | |
| 59 console.log('recording!'); | |
| 60 } else if (msg.data.name == 'data') { | |
| 61 appendData(msg.data.data); | |
| 62 } else if (msg.data.name == 'stopped') { | |
| 63 console.log('done recording! bytes: ' + dataArray.byteLength); | |
| 64 saveBlob(new Blob([dataArray], { type: "application/octet-stream" })); | |
|
bbudge
2015/02/19 21:54:38
On my Mac, the encoder failed (no hardware) and I
| |
| 65 resetData(); | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 function resetData() { | |
| 70 window.dataArray = new ArrayBuffer(0); | |
| 71 } | |
| 72 | |
| 73 function appendData(data) { | |
| 74 var tmp = new Uint8Array(dataArray.byteLength + data.byteLength); | |
| 75 tmp.set(new Uint8Array(dataArray), 0 ); | |
| 76 tmp.set(new Uint8Array(data), dataArray.byteLength); | |
| 77 dataArray = tmp.buffer; | |
| 78 } | |
| 79 | |
| 80 function initialize() { | |
| 81 plugin = document.getElementById('plugin'); | |
| 82 plugin.addEventListener('message', handleMessage, false); | |
| 83 | |
| 84 video = document.getElementById('video'); | |
| 85 | |
| 86 var selectEl = document.getElementById('start'); | |
| 87 selectEl.addEventListener('click', function (e) { | |
| 88 resetData(); | |
| 89 startRecord(); | |
| 90 }); | |
| 91 selectEl = document.getElementById('stop'); | |
| 92 selectEl.addEventListener('click', function (e) { | |
| 93 stopRecord(); | |
| 94 }); | |
| 95 } | |
| 96 | |
| 97 document.addEventListener('DOMContentLoaded', initialize, false); | |
| 98 </script> | |
| 99 </head> | |
| 100 | |
| 101 <body> | |
| 102 <h1>Video Encoder API Example</h1><br> | |
| 103 This example demonstrates receiving frames from a video MediaStreamTrack and | |
| 104 encoding them in a plugin. | |
| 105 <br> | |
| 106 <input type="button" id="start" value="Start Recording"/> | |
| 107 <input type="button" id="stop" value="Stop Recording"/> | |
| 108 <br> | |
| 109 <div> | |
| 110 <embed id="plugin" type="application/x-ppapi-example-video-encode" | |
| 111 width="640" height="480"/> | |
| 112 <video id="video" width="640" height="480"/> | |
| 113 </div> | |
| 114 </body> | |
| 115 </html> | |
| OLD | NEW |
