b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
52 lines
1.7 KiB
JavaScript
Executable file
52 lines
1.7 KiB
JavaScript
Executable file
(function(exports) {
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'use strict';
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function Captions(player) {
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this.player = player;
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}
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//
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// Remove all <track> elements from the <video> element
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//
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Captions.prototype.remove = function() {
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for(var track of this.player.querySelectorAll('track')) {
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if (track.src && track.src.startsWith('blob:')) {
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URL.revokeObjectURL(track.src);
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}
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track.remove();
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}
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};
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//
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// Given the path of a video file, look in the same directory for a
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// file of captions or subtitles for that video. If we find one, set
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// it on the <track> element of the player to display the captions.
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//
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// This ought to be locale sensitive so that we pick the best captions
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// for the current locale. But for now, if the video file is named foo.mp4
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// then we'll just look for a file in the same directory with name foo.vtt.
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//
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Captions.prototype.findAndDisplay = function(filepath) {
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if (!filepath) { // If it is a blob with no name we can't look for captions
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return;
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}
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// Look for a vtt file for this video
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// XXX: ignoring locale for now
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var basename = filepath.substring(0, filepath.lastIndexOf('.'));
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var captionsFilename = basename + '.vtt';
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var sdcard = navigator.getDeviceStorage('sdcard');
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if (!sdcard) return; // Captions are optional on desktop.
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var request = sdcard.get(captionsFilename);
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request.onsuccess = function() {
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var track = document.createElement('track');
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track.src = URL.createObjectURL(request.result);
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track.default = true;
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this.player.appendChild(track);
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track.track.mode = 'showing';
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}.bind(this);
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};
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exports.Captions = Captions;
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}(window));
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