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// ==========================================================================
// Plyr HTML5 helpers
// ==========================================================================
import support from './support';
import { removeElement } from './utils/elements';
import { triggerEvent } from './utils/events';
import is from './utils/is';
import { silencePromise } from './utils/promise';
import { setAspectRatio } from './utils/style';
const html5 = {
getSources() {
if (!this.isHTML5) {
return [];
}
const sources = Array.from(this.media.querySelectorAll('source'));
// Filter out unsupported sources (if type is specified)
return sources.filter(source => {
const type = source.getAttribute('type');
if (is.empty(type)) {
return true;
}
return support.mime.call(this, type);
});
},
// Get quality levels
getQualityOptions() {
// Whether we're forcing all options (e.g. for streaming)
if (this.config.quality.forced) {
return this.config.quality.options;
}
// Get sizes from <source> elements
return html5.getSources
.call(this)
.map(source => Number(source.getAttribute('size')))
.filter(Boolean);
},
setup() {
if (!this.isHTML5) {
return;
}
const player = this;
// Set speed options from config
player.options.speed = player.config.speed.options;
// Set aspect ratio if fixed
if (!is.empty(this.config.ratio)) {
setAspectRatio.call(player);
}
// Quality
Object.defineProperty(player.media, 'quality', {
get() {
// Get sources
const sources = html5.getSources.call(player);
const source = sources.find(s => s.getAttribute('src') === player.source);
// Return size, if match is found
return source && Number(source.getAttribute('size'));
},
set(input) {
if (player.quality === input) {
return;
}
// If we're using an an external handler...
if (player.config.quality.forced && is.function(player.config.quality.onChange)) {
player.config.quality.onChange(input);
} else {
// Get sources
const sources = html5.getSources.call(player);
// Get first match for requested size
const source = sources.find(s => Number(s.getAttribute('size')) === input);
// No matching source found
if (!source) {
return;
}
// Get current state
const { currentTime, paused, preload, readyState, playbackRate } = player.media;
// Set new source
player.media.src = source.getAttribute('src');
// Prevent loading if preload="none" and the current source isn't loaded (#1044)
if (preload !== 'none' || readyState) {
// Restore time
player.once('loadedmetadata', () => {
player.speed = playbackRate;
player.currentTime = currentTime;
// Resume playing
if (!paused) {
silencePromise(player.play());
}
});
// Load new source
player.media.load();
}
}
// Trigger change event
triggerEvent.call(player, player.media, 'qualitychange', false, {
quality: input,
});
},
});
},
// Cancel current network requests
// See https://github.com/sampotts/plyr/issues/174
cancelRequests() {
if (!this.isHTML5) {
return;
}
// Remove child sources
removeElement(html5.getSources.call(this));
// Set blank video src attribute
// This is to prevent a MEDIA_ERR_SRC_NOT_SUPPORTED error
// Info: http://stackoverflow.com/questions/32231579/how-to-properly-dispose-of-an-html5-video-and-close-socket-or-connection
this.media.setAttribute('src', this.config.blankVideo);
// Load the new empty source
// This will cancel existing requests
// See https://github.com/sampotts/plyr/issues/174
this.media.load();
// Debugging
this.debug.log('Cancelled network requests');
},
};
export default html5;
|
