shaka-player
Version:
DASH/EME video player library
282 lines (232 loc) • 9.31 kB
JavaScript
/** @license
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.ads.ClientSideAdManager');
goog.require('goog.asserts');
goog.require('shaka.ads.ClientSideAd');
/**
* A class responsible for client-side ad interactions.
*/
shaka.ads.ClientSideAdManager = class {
/**
* @param {HTMLElement} adContainer
* @param {HTMLMediaElement} video
* @param {string} locale
* @param {function(!shaka.util.FakeEvent)} onEvent
*/
constructor(adContainer, video, locale, onEvent) {
/** @private {HTMLElement} */
this.adContainer_ = adContainer;
/** @private {HTMLMediaElement} */
this.video_ = video;
/** @private {number} */
this.requestAdsStartTime_ = NaN;
/** @private {function(!shaka.util.FakeEvent)} */
this.onEvent_ = onEvent;
/** @private {shaka.ads.ClientSideAd} */
this.ad_ = null;
/** @private {shaka.util.EventManager} */
this.eventManager_ = new shaka.util.EventManager();
google.ima.settings.setLocale(locale);
const adDisplayContainer = new google.ima.AdDisplayContainer(
this.adContainer_,
this.video_);
// TODO: IMA: Must be done as the result of a user action on mobile
adDisplayContainer.initialize();
// IMA: This instance should be re-used for the entire lifecycle of
// the page.
this.adsLoader_ = new google.ima.AdsLoader(adDisplayContainer);
this.adsLoader_.getSettings().setPlayerType('shaka-player');
this.adsLoader_.getSettings().setPlayerVersion(shaka.Player.version);
/** @private {google.ima.AdsManager} */
this.imaAdsManager_ = null;
this.eventManager_.listenOnce(this.adsLoader_,
google.ima.AdsManagerLoadedEvent.Type.ADS_MANAGER_LOADED, (e) => {
this.onAdsManagerLoaded_(
/** @type {!google.ima.AdsManagerLoadedEvent} */ (e));
});
this.eventManager_.listen(this.adsLoader_,
google.ima.AdEvent.Type.AD_ERROR, (e) => {
this.onAdError_( /** @type {!google.ima.AdErrorEvent} */ (e));
});
// Notify the SDK when the video has ended, so it can play post-roll ads.
this.video_.onended = () => {
this.adsLoader_.contentComplete();
};
}
/**
* @param {!google.ima.AdsRequest} imaRequest
*/
requestAds(imaRequest) {
goog.asserts.assert(imaRequest.adTagUrl.length,
'The ad tag needs to be set up before requesting ads.');
this.requestAdsStartTime_ = Date.now() / 1000;
this.adsLoader_.requestAds(imaRequest);
}
/**
* Stop all currently playing ads.
*/
stop() {
this.imaAdsManager_.stop();
}
/**
* @param {!google.ima.AdErrorEvent} e
* @private
*/
onAdError_(e) {
shaka.log.warning(
'There was an ad error from the IMA SDK: ' + e.getError());
shaka.log.warning('Resuming playback.');
this.onAdComplete_();
// Remove ad breaks from the timeline
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.CUEPOINTS_CHANGED,
{'cuepoints': []}));
}
/**
* @param {!google.ima.AdsManagerLoadedEvent} e
* @private
*/
onAdsManagerLoaded_(e) {
goog.asserts.assert(this.video_ != null, 'Video should not be null!');
const now = Date.now() / 1000;
const loadTime = now - this.requestAdsStartTime_;
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.ADS_LOADED,
{'loadTime': loadTime}));
this.imaAdsManager_ = e.getAdsManager(this.video_);
const cuePointStarts = this.imaAdsManager_.getCuePoints();
if (cuePointStarts.length) {
/** @type {!Array.<!shaka.ads.CuePoint>} */
const cuePoints = [];
for (const start of cuePointStarts) {
const shakaCuePoint = new shaka.ads.CuePoint(start);
cuePoints.push(shakaCuePoint);
}
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.CUEPOINTS_CHANGED,
{'cuepoints': cuePoints}));
}
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdErrorEvent.Type.AD_ERROR, (error) => {
this.onAdError_(/** @type {!google.ima.AdErrorEvent} */ (error));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.CONTENT_PAUSE_REQUESTED, (e) => {
this.onAdStart_(/** @type {!google.ima.AdEvent} */ (e));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.STARTED, (e) => {
this.onAdStart_(/** @type {!google.ima.AdEvent} */ (e));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.FIRST_QUARTILE, () => {
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_FIRST_QUARTILE));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.MIDPOINT, () => {
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_MIDPOINT));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.THIRD_QUARTILE, () => {
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_THIRD_QUARTILE));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.COMPLETE, () => {
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_COMPLETE));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.CONTENT_RESUME_REQUESTED, () => {
this.onAdComplete_();
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.ALL_ADS_COMPLETED, () => {
this.onAdComplete_();
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.SKIPPED, () => {
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_SKIPPED));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.VOLUME_CHANGED, () => {
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_VOLUME_CHANGED));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.VOLUME_MUTED, () => {
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_MUTED));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.PAUSED, () => {
goog.asserts.assert(this.ad_ != null, 'Ad should not be null!');
this.ad_.setPaused(true);
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_PAUSED));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.RESUMED, () => {
goog.asserts.assert(this.ad_ != null, 'Ad should not be null!');
this.ad_.setPaused(false);
this.onEvent_(
new shaka.util.FakeEvent(shaka.ads.AdManager.AD_RESUMED));
});
this.eventManager_.listen(this.imaAdsManager_,
google.ima.AdEvent.Type.SKIPPABLE_STATE_CHANGED, () => {
goog.asserts.assert(this.ad_ != null, 'Ad should not be null!');
this.onEvent_(new shaka.util.FakeEvent(
shaka.ads.AdManager.AD_SKIP_STATE_CHANGED));
});
try {
const viewMode = document.fullscreenElement ?
google.ima.ViewMode.FULLSCREEN : google.ima.ViewMode.NORMAL;
this.imaAdsManager_.init(this.video_.offsetWidth,
this.video_.offsetHeight, viewMode);
// Wait on the 'loadeddata' event rather than the 'loadedmetadata' event
// because 'loadedmetadata' is sometimes called before the video resizes
// on some platforms (e.g. Safari).
this.eventManager_.listen(this.video_, 'loadeddata', () => {
const viewMode = document.fullscreenElement ?
google.ima.ViewMode.FULLSCREEN : google.ima.ViewMode.NORMAL;
this.imaAdsManager_.resize(this.video_.offsetWidth,
this.video_.offsetHeight, viewMode);
});
// Single video and overlay ads will start at this time
// TODO (ismena): Need a better inderstanding of what this does.
// The docs say it's called to 'start playing the ads,' but I haven't
// seen the ads actually play until requestAds() is called.
this.imaAdsManager_.start();
} catch (adError) {
// If there was a problem with the VAST response,
// we we won't be getting an ad. Hide ad UI if we showed it already
// and get back to the presentation.
this.onAdComplete_();
}
}
/**
* @param {!google.ima.AdEvent} e
* @private
*/
onAdStart_(e) {
goog.asserts.assert(this.imaAdsManager_,
'Should have an ads manager at this point!');
const imaAd = e.getAd();
this.ad_ = new shaka.ads.ClientSideAd(imaAd, this.imaAdsManager_);
this.onEvent_(new shaka.util.FakeEvent(shaka.ads.AdManager.AD_STARTED,
{'ad': this.ad_}));
this.adContainer_.setAttribute('ad-active', 'true');
this.video_.pause();
}
/** @private */
onAdComplete_() {
this.onEvent_(new shaka.util.FakeEvent(shaka.ads.AdManager.AD_STOPPED));
this.adContainer_.removeAttribute('ad-active');
this.video_.play();
}
};