shaka-player
Version:
DASH/EME video player library
248 lines (204 loc) • 8.02 kB
JavaScript
/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.ui.ResolutionSelection');
goog.require('goog.asserts');
goog.require('shaka.Player');
goog.require('shaka.ui.Controls');
goog.require('shaka.ui.Enums');
goog.require('shaka.ui.Locales');
goog.require('shaka.ui.Localization');
goog.require('shaka.ui.OverflowMenu');
goog.require('shaka.ui.SettingsMenu');
goog.require('shaka.ui.Utils');
goog.require('shaka.util.Dom');
goog.require('shaka.util.FakeEvent');
goog.requireType('shaka.ui.Controls');
/**
* @extends {shaka.ui.SettingsMenu}
* @final
* @export
*/
shaka.ui.ResolutionSelection = class extends shaka.ui.SettingsMenu {
/**
* @param {!HTMLElement} parent
* @param {!shaka.ui.Controls} controls
*/
constructor(parent, controls) {
super(parent, controls, shaka.ui.Enums.MaterialDesignIcons.RESOLUTION);
this.button.classList.add('shaka-resolution-button');
this.button.classList.add('shaka-tooltip-status');
this.menu.classList.add('shaka-resolutions');
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_UPDATED, () => {
this.updateLocalizedStrings_();
});
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_CHANGED, () => {
this.updateLocalizedStrings_();
});
this.eventManager.listen(this.player, 'variantchanged', () => {
this.updateResolutionSelection_();
});
this.eventManager.listen(this.player, 'trackschanged', () => {
this.updateResolutionSelection_();
});
this.eventManager.listen(this.player, 'abrstatuschanged', () => {
this.updateResolutionSelection_();
});
this.updateResolutionSelection_();
}
/** @private */
updateResolutionSelection_() {
/** @type {!Array.<shaka.extern.Track>} */
let tracks = [];
// When played with src=, the variant tracks available from
// player.getVariantTracks() represent languages, not resolutions.
if (this.player.getLoadMode() != shaka.Player.LoadMode.SRC_EQUALS) {
tracks = this.player.getVariantTracks();
}
// If there is a selected variant track, then we filter out any tracks in
// a different language. Then we use those remaining tracks to display the
// available resolutions.
const selectedTrack = tracks.find((track) => track.active);
if (selectedTrack) {
// Filter by current audio language and channel count.
tracks = tracks.filter(
(track) => track.language == selectedTrack.language &&
track.channelsCount == selectedTrack.channelsCount);
}
// Remove duplicate entries with the same resolution or quality depending
// on content type. Pick an arbitrary one.
tracks = tracks.filter((track, idx) => {
// Keep the first one with the same height or bandwidth.
const otherIdx = this.player.isAudioOnly() ?
tracks.findIndex((t) => t.bandwidth == track.bandwidth) :
tracks.findIndex((t) => t.height == track.height);
return otherIdx == idx;
});
// Sort the tracks by height or bandwidth depending on content type.
if (this.player.isAudioOnly()) {
tracks.sort((t1, t2) => {
goog.asserts.assert(t1.bandwidth != null, 'Null bandwidth');
goog.asserts.assert(t2.bandwidth != null, 'Null bandwidth');
return t2.bandwidth - t1.bandwidth;
});
} else {
tracks.sort((t1, t2) => {
goog.asserts.assert(t1.height != null, 'Null height');
goog.asserts.assert(t2.height != null, 'Null height');
return t2.height - t1.height;
});
}
// Remove old shaka-resolutions
// 1. Save the back to menu button
const backButton = shaka.ui.Utils.getFirstDescendantWithClassName(
this.menu, 'shaka-back-to-overflow-button');
// 2. Remove everything
shaka.util.Dom.removeAllChildren(this.menu);
// 3. Add the backTo Menu button back
this.menu.appendChild(backButton);
const abrEnabled = this.player.getConfiguration().abr.enabled;
// Add new ones
for (const track of tracks) {
const button = shaka.util.Dom.createButton();
button.classList.add('explicit-resolution');
this.eventManager.listen(button, 'click',
() => this.onTrackSelected_(track));
const span = shaka.util.Dom.createHTMLElement('span');
if (this.player.isAudioOnly()) {
span.textContent = Math.round(track.bandwidth / 1000) + ' kbits/s';
} else {
if (track.hdr == 'PQ' || track.hdr == 'HLG') {
span.textContent = track.height + 'p (HDR)';
} else {
span.textContent = track.height + 'p';
}
}
button.appendChild(span);
if (!abrEnabled && track == selectedTrack) {
// If abr is disabled, mark the selected track's resolution.
button.ariaSelected = 'true';
button.appendChild(shaka.ui.Utils.checkmarkIcon());
span.classList.add('shaka-chosen-item');
this.currentSelection.textContent = span.textContent;
}
this.menu.appendChild(button);
}
// Add the Auto button
const autoButton = shaka.util.Dom.createButton();
autoButton.classList.add('shaka-enable-abr-button');
this.eventManager.listen(autoButton, 'click', () => {
const config = {abr: {enabled: true}};
this.player.configure(config);
this.updateResolutionSelection_();
});
/** @private {!HTMLElement}*/
this.abrOnSpan_ = shaka.util.Dom.createHTMLElement('span');
this.abrOnSpan_.classList.add('shaka-auto-span');
this.abrOnSpan_.textContent =
this.localization.resolve(shaka.ui.Locales.Ids.AUTO_QUALITY);
autoButton.appendChild(this.abrOnSpan_);
// If abr is enabled reflect it by marking 'Auto' as selected.
if (abrEnabled) {
autoButton.ariaSelected = 'true';
autoButton.appendChild(shaka.ui.Utils.checkmarkIcon());
this.abrOnSpan_.classList.add('shaka-chosen-item');
this.currentSelection.textContent =
this.localization.resolve(shaka.ui.Locales.Ids.AUTO_QUALITY);
}
this.button.setAttribute('shaka-status', this.currentSelection.textContent);
this.menu.appendChild(autoButton);
shaka.ui.Utils.focusOnTheChosenItem(this.menu);
this.controls.dispatchEvent(
new shaka.util.FakeEvent('resolutionselectionupdated'));
this.updateLocalizedStrings_();
}
/**
* @param {!shaka.extern.Track} track
* @private
*/
onTrackSelected_(track) {
// Disable abr manager before changing tracks.
const config = {abr: {enabled: false}};
this.player.configure(config);
const clearBuffer = this.controls.getConfig().clearBufferOnQualityChange;
this.player.selectVariantTrack(track, clearBuffer);
}
/**
* @private
*/
updateLocalizedStrings_() {
const LocIds = shaka.ui.Locales.Ids;
const locId = this.player.isAudioOnly() ?
LocIds.QUALITY : LocIds.RESOLUTION;
this.button.ariaLabel = this.localization.resolve(locId);
this.backButton.ariaLabel = this.localization.resolve(locId);
this.backSpan.textContent =
this.localization.resolve(locId);
this.nameSpan.textContent =
this.localization.resolve(locId);
this.abrOnSpan_.textContent =
this.localization.resolve(LocIds.AUTO_QUALITY);
if (this.player.getConfiguration().abr.enabled) {
this.currentSelection.textContent =
this.localization.resolve(shaka.ui.Locales.Ids.AUTO_QUALITY);
}
}
};
/**
* @implements {shaka.extern.IUIElement.Factory}
* @final
*/
shaka.ui.ResolutionSelection.Factory = class {
/** @override */
create(rootElement, controls) {
return new shaka.ui.ResolutionSelection(rootElement, controls);
}
};
shaka.ui.OverflowMenu.registerElement(
'quality', new shaka.ui.ResolutionSelection.Factory());
shaka.ui.Controls.registerElement(
'quality', new shaka.ui.ResolutionSelection.Factory());