mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-14 15:56:38 +03:00
Joey Parrish
139e722ce2
This is in preparation for a future in which SSL is required by EME. Change-Id: I82ef395197e27fa5cc9bcaf1afa25e27b9710935
123 lines
3.7 KiB
Plaintext
123 lines
3.7 KiB
Plaintext
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>TurtleTube - Offline</title>
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<!-- Load the Shaka Player library. -->
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<script src="shaka-player.compiled.js"></script>
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</head>
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<body>
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<video id="video"
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width="640" height="480"
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crossorigin="anonymous"
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controls>
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Your browser does not support HTML5 video.
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</video>
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</body>
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<script>
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var video;
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function initPlayer() {
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// Install polyfills.
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shaka.polyfill.installAll();
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// Find the video element.
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video = document.getElementById('video');
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// Attach the player to the window so that it can be easily debugged.
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window.player = new shaka.player.Player(video);
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// Listen for errors from the Player.
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player.addEventListener('error', function(event) {
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console.error(event);
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});
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}
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function initialize() {
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if (!window.player)
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initPlayer();
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}
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function chooseTracks(videoSource) {
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var ids = [];
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var videoTracks = videoSource.getVideoTracks();
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if (videoTracks.length) {
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videoTracks.sort(shaka.player.VideoTrack.compare);
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// Choosing the smallest track.
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var track = videoTracks[0];
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ids.push(track.id);
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}
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var audioTracks = videoSource.getAudioTracks();
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if (audioTracks.length) {
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// The video source gives you the preferred language first.
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// Remove any tracks from other languages first.
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var lang = audioTracks[0].lang;
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audioTracks = audioTracks.filter(function(track) {
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return track.lang == lang;
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});
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// From what's left, choose the middle stream. If we have high, medium,
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// and low quality audio, this is medium. If we only have high and low,
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// this is high.
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var index = Math.floor(audioTracks.length / 2);
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ids.push(audioTracks[index].id);
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}
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// Return IDs of chosen tracks.
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return Promise.resolve(ids);
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}
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function storeContent() {
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// Construct an OfflineVideoSource.
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var offlineSource = new shaka.player.OfflineVideoSource(
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null, // groupId, not used when storing content.
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null); // estimator, optional parameter.
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// Listen for progress events from the OfflineVideoSource.
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offlineSource.addEventListener('progress', function(event) {
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// Percentage complete is the detail field of the event.
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console.log(
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'Content storage is ' + event.detail.toFixed(2) + '% complete.');
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});
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// Store content from MPD url.
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var mpdUrl = 'https://turtle-tube.appspot.com/t/t2/dash.mpd';
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var preferredLanguage = 'en-US';
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return offlineSource.store(
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mpdUrl,
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preferredLanguage,
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null, // interpretContentProtection, not needed for clear content.
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chooseTracks.bind(null, offlineSource)
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).then(
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function(groupId) {
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window.groupId = groupId;
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console.log('Stored content under group ID ' + groupId);
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}
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);
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}
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function playOfflineContent() {
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// Construct an OfflineVideoSource and load with player.
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var offlineSource =
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new shaka.player.OfflineVideoSource(window.groupId, null);
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return window.player.load(offlineSource).then(
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function() {
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video.play();
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console.log('Offline content with group ID ' + window.groupId +
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' ready for playback.');
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});
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}
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function test() {
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initialize();
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storeContent().then(playOfflineContent).catch(
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function(e) {
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console.error(e);
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});
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}
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document.addEventListener('DOMContentLoaded', test);
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</script>
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</html>
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