@ux-aspects/ux-aspects
Version:
Open source user interface framework for building modern, responsive, mobile big data applications
321 lines • 40.8 kB
JavaScript
import { inject, Injectable } from '@angular/core';
import { BehaviorSubject, from, Observable, ReplaySubject, Subject } from 'rxjs';
import { FrameExtractionService } from '../../services/frame-extraction/index';
import * as i0 from "@angular/core";
export class MediaPlayerService {
constructor() {
this._frameExtractionService = inject(FrameExtractionService);
this.type = 'video';
this.loaded = false;
/** Aria Labels */
this.muteAriaLabel = this.getMuteAriaLabel;
this.playAriaLabel = this.getPlayAriaLabel;
this.fullscreenAriaLabel = this.getFullscreenAriaLabel;
this.selectSubtitlesAriaLabel = this.getSubtitlesAriaLabel;
this.goToStartAriaLabel = 'Go to start';
this.goToEndAriaLabel = 'Go to end';
this.subtitlesTitleAriaLabel = 'Subtitles';
this.subtitlesOffAriaLabel = 'Subtitles Off';
this.noSubtitlesAriaLabel = 'No subtitles';
this.mediaPlayerAriaLabel = 'Media Player';
this.seekAriaLabel = 'Seek Slider';
/*
Create observables for media player events
*/
this.playing = new BehaviorSubject(false);
this.initEvent = new ReplaySubject();
this.abortEvent = new Subject();
this.canPlayEvent = new BehaviorSubject(false);
this.canPlayThroughEvent = new BehaviorSubject(false);
this.durationChangeEvent = new Subject();
this.endedEvent = new Subject();
this.errorEvent = new Subject();
this.loadedDataEvent = new Subject();
this.loadedMetadataEvent = new Subject();
this.loadStartEvent = new Subject();
this.pauseEvent = new Subject();
this.playEvent = new Subject();
this.playingEvent = new Subject();
this.rateChangeEvent = new Subject();
this.seekedEvent = new Subject();
this.seekingEvent = new Subject();
this.stalledEvent = new Subject();
this.suspendEvent = new Subject();
this.timeUpdateEvent = new Subject();
this.volumeChangeEvent = new Subject();
this.waitingEvent = new Subject();
this.mediaClickEvent = new Subject();
this.fullscreenEvent = new BehaviorSubject(false);
this.quietModeEvent = new BehaviorSubject(false);
this.progressEvent = Observable.create((observer) => {
// repeat until the whole video has fully loaded
const interval = setInterval(() => {
const buffered = this._mediaPlayer.buffered;
observer.next(buffered);
if (buffered.length === 1 && buffered.start(0) === 0 && buffered.end(0) === this.duration) {
observer.complete();
clearInterval(interval);
}
}, 1000);
});
this._fullscreen = false;
}
/*
Create all the getters and setters the can be used by media player extensions
*/
get mediaPlayer() {
return this._mediaPlayer;
}
get quietMode() {
return this._quietMode;
}
set quietMode(value) {
// quiet mode cannot be enabled on audio player
if (this.type === 'audio') {
value = false;
}
this._quietMode = value;
this.quietModeEvent.next(value);
}
get mediaPlayerWidth() {
return this._mediaPlayer ? this._mediaPlayer.offsetWidth : 0;
}
get mediaPlayerHeight() {
return this._mediaPlayer ? this._mediaPlayer.offsetHeight : 0;
}
get autoplay() {
return this._mediaPlayer ? this._mediaPlayer.autoplay : false;
}
set autoplay(value) {
this._mediaPlayer.autoplay = value;
}
get buffered() {
return this._mediaPlayer ? this._mediaPlayer.buffered : new TimeRanges();
}
get crossOrigin() {
return this._mediaPlayer ? this._mediaPlayer.crossOrigin : null;
}
set crossOrigin(value) {
this._mediaPlayer.crossOrigin = value;
}
get currentSrc() {
return this._mediaPlayer ? this._mediaPlayer.currentSrc : null;
}
get currentTime() {
return this._mediaPlayer ? this._mediaPlayer.currentTime : 0;
}
set currentTime(value) {
this._mediaPlayer.currentTime = value;
}
get defaultMuted() {
return this._mediaPlayer ? this._mediaPlayer.defaultMuted : false;
}
set defaultMuted(value) {
this._mediaPlayer.defaultMuted = value;
}
get defaultPlaybackRate() {
return this._mediaPlayer ? this._mediaPlayer.defaultPlaybackRate : 1;
}
set defaultPlaybackRate(value) {
this._mediaPlayer.defaultPlaybackRate = value;
}
get duration() {
return this._mediaPlayer && !isNaN(this.mediaPlayer.duration) ? this._mediaPlayer.duration : 0;
}
get ended() {
return this._mediaPlayer ? this._mediaPlayer.ended : false;
}
get loop() {
return this._mediaPlayer ? this._mediaPlayer.loop : false;
}
set loop(value) {
this._mediaPlayer.loop = value;
}
get muted() {
return this._mediaPlayer ? this._mediaPlayer.muted : false;
}
set muted(value) {
this._mediaPlayer.muted = value;
}
get networkState() {
return this._mediaPlayer.networkState;
}
get paused() {
return this._mediaPlayer ? this._mediaPlayer.paused : true;
}
get playbackRate() {
return this._mediaPlayer ? this._mediaPlayer.playbackRate : 1;
}
set playbackRate(value) {
this._mediaPlayer.playbackRate = value;
}
get played() {
return this._mediaPlayer ? this._mediaPlayer.played : new TimeRanges();
}
get preload() {
return this._mediaPlayer ? this._mediaPlayer.preload : 'auto';
}
set preload(value) {
this._mediaPlayer.preload = value;
}
get readyState() {
return this._mediaPlayer ? this._mediaPlayer.readyState : 0;
}
get seekable() {
return this._mediaPlayer ? this._mediaPlayer.seekable : new TimeRanges();
}
get seeking() {
return this._mediaPlayer ? this._mediaPlayer.seeking : false;
}
get src() {
return this._mediaPlayer ? this._mediaPlayer.src : '';
}
set src(value) {
this._mediaPlayer.src = value;
}
get textTracks() {
return this._mediaPlayer ? Array.from(this._mediaPlayer.textTracks) : [];
}
get volume() {
return this._mediaPlayer ? this._mediaPlayer.volume : 1;
}
set volume(value) {
if (this._mediaPlayer) {
this._mediaPlayer.volume = value;
}
}
get fullscreen() {
return this._mediaPlayer ? this._fullscreen : false;
}
set fullscreen(value) {
this._fullscreen = value;
this.fullscreenEvent.next(value);
}
setMediaPlayer(hostElement, mediaPlayer) {
this._hostElement = hostElement;
this._mediaPlayer = mediaPlayer;
this.initEvent.next(true);
}
/**
* Toggle playing state
*/
togglePlay() {
// prevent any action is not loaded
if (this.loaded === false) {
return;
}
if (this.paused) {
this.play();
}
else {
this.pause();
}
}
/**
* Starts playing the audio/video
*/
play() {
this._mediaPlayer.play();
}
/**
* Pauses the currently playing audio/video
*/
pause() {
this._mediaPlayer.pause();
}
/**
* Re-loads the audio/video element
*/
load() {
this._mediaPlayer.load();
}
/**
* Checks if the browser can play the specified audio/video type
*/
canPlayType(type) {
return this._mediaPlayer.canPlayType(type);
}
/**
* Adds a new text track to the audio/video
*/
addTextTrack(kind, label, language) {
return this._mediaPlayer.addTextTrack(kind, label, language);
}
/**
* Attempt to display media in fullscreen mode
*/
requestFullscreen() {
// get the host element (we need to do some browser specific checks and typescript complains)
const host = this._hostElement;
const requestFullscreen = host.requestFullscreen || host.webkitRequestFullscreen || host.msRequestFullscreen || host.mozRequestFullScreen;
// if we can perform the action then perform it and update the state
if (requestFullscreen) {
requestFullscreen.call(host);
// update the internal state
this.fullscreen = true;
}
}
/**
* Exit full screen mode
*/
exitFullscreen() {
// get the document element (we need to do some browser specific checks and typescript complains)
const host = document;
const exitFullscreen = host.exitFullscreen || host.webkitExitFullscreen || host.msExitFullscreen || host.mozCancelFullScreen;
// if we can perform the action then perform it and update the state
if (exitFullscreen) {
exitFullscreen.call(host);
// update the internal state
this.fullscreen = false;
}
}
/**
* Toggle Fullscreen State
*/
toggleFullscreen() {
if (this.fullscreen) {
this.exitFullscreen();
}
else {
this.requestFullscreen();
}
}
fullscreenChange() {
// get the document element (we need to do some browser specific checks and typescript complains)
const host = document;
// set the fullscreen state (this also emits the event)
this.fullscreen = host.fullscreen || host.webkitIsFullScreen || host.mozFullScreen || host.msFullscreenElement !== null && host.msFullscreenElement !== undefined;
}
/**
* Extract the frames from the video
*/
getFrames(width, height) {
if (this.type === 'video') {
return this._frameExtractionService.getFrameThumbnails(this.source, width, height, 0, this.duration, 10);
}
return from([]);
}
hideSubtitleTracks() {
for (let index = 0; index < this.textTracks.length; index++) {
this.textTracks[index].mode = 'hidden';
}
}
getMuteAriaLabel(volume) {
return volume === 0 ? 'Unmute' : 'Mute';
}
getPlayAriaLabel(isPlaying) {
return isPlaying ? 'Pause' : 'Play';
}
getFullscreenAriaLabel(isFullscreen) {
return isFullscreen ? 'Exit full screen' : 'Full screen';
}
getSubtitlesAriaLabel(track) {
return `Select subtitles, ${track} currently selected.`;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: MediaPlayerService, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: MediaPlayerService }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: MediaPlayerService, decorators: [{
type: Injectable
}] });
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string = 'Subtitles';\n    subtitlesOffAriaLabel: string = 'Subtitles Off';\n    noSubtitlesAriaLabel: string = 'No subtitles';\n    mediaPlayerAriaLabel: string = 'Media Player';\n    seekAriaLabel: string = 'Seek Slider';\n\n    /*\n        Create observables for media player events\n    */\n    playing: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);\n    initEvent: ReplaySubject<boolean> = new ReplaySubject<boolean>();\n    abortEvent: Subject<void> = new Subject<void>();\n    canPlayEvent: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);\n    canPlayThroughEvent: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);\n    durationChangeEvent: Subject<number> = new Subject<number>();\n    endedEvent: Subject<void> = new Subject<void>();\n    errorEvent: Subject<void> = new Subject<void>();\n    loadedDataEvent: Subject<void> = new Subject<void>();\n    loadedMetadataEvent: Subject<void> = new Subject<void>();\n    loadStartEvent: Subject<void> = new Subject<void>();\n    pauseEvent: Subject<void> = new Subject<void>();\n    playEvent: Subject<void> = new Subject<void>();\n    playingEvent: Subject<boolean> = new Subject<boolean>();\n    rateChangeEvent: Subject<number> = new Subject<number>();\n    seekedEvent: Subject<number> = new Subject<number>();\n    seekingEvent: Subject<number> = new Subject<number>();\n    stalledEvent: Subject<void> = new Subject<void>();\n    suspendEvent: Subject<void> = new Subject<void>();\n    timeUpdateEvent: Subject<number> = new Subject<number>();\n    volumeChangeEvent: Subject<number> = new Subject<number>();\n    waitingEvent: Subject<void> = new Subject<void>();\n    mediaClickEvent: Subject<MouseEvent> = new Subject<MouseEvent>();\n    fullscreenEvent: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);\n    quietModeEvent: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);\n    progressEvent: Observable<TimeRanges> = Observable.create((observer: Observer<TimeRanges>) => {\n\n        // repeat until the whole video has fully loaded\n        const interval = setInterval(() => {\n\n            const buffered = this._mediaPlayer.buffered as TimeRanges;\n            observer.next(buffered);\n\n            if (buffered.length === 1 && buffered.start(0) === 0 && buffered.end(0) === this.duration) {\n                observer.complete();\n                clearInterval(interval);\n            }\n        }, 1000);\n    });\n\n    private _mediaPlayer: HTMLMediaElement;\n    private _hostElement: HTMLElement;\n    private _fullscreen: boolean = false;\n    private _quietMode: boolean;\n\n\n    /*\n        Create all the getters and setters the can be used by media player extensions\n    */\n    get mediaPlayer(): HTMLMediaElement {\n        return this._mediaPlayer;\n    }\n\n    get quietMode(): boolean {\n        return this._quietMode;\n    }\n\n    set quietMode(value: boolean) {\n\n        // quiet mode cannot be enabled on audio player\n        if (this.type === 'audio') {\n            value = false;\n        }\n\n        this._quietMode = value;\n        this.quietModeEvent.next(value);\n    }\n\n    get mediaPlayerWidth(): number {\n        return this._mediaPlayer ? this._mediaPlayer.offsetWidth : 0;\n    }\n\n    get mediaPlayerHeight(): number {\n        return this._mediaPlayer ? this._mediaPlayer.offsetHeight : 0;\n    }\n\n    get autoplay(): boolean {\n        return this._mediaPlayer ? this._mediaPlayer.autoplay : false;\n    }\n    set autoplay(value: boolean) {\n        this._mediaPlayer.autoplay = value;\n    }\n\n    get buffered(): TimeRanges {\n        return this._mediaPlayer ? this._mediaPlayer.buffered : new TimeRanges();\n    }\n\n    get crossOrigin(): string {\n        return this._mediaPlayer ? this._mediaPlayer.crossOrigin : null;\n    }\n    set crossOrigin(value: string) {\n        this._mediaPlayer.crossOrigin = value;\n    }\n\n    get currentSrc(): string {\n        return this._mediaPlayer ? this._mediaPlayer.currentSrc : null;\n    }\n\n    get currentTime(): number {\n        return this._mediaPlayer ? this._mediaPlayer.currentTime : 0;\n    }\n    set currentTime(value: number) {\n        this._mediaPlayer.currentTime = value;\n    }\n\n    get defaultMuted(): boolean {\n        return this._mediaPlayer ? this._mediaPlayer.defaultMuted : false;\n    }\n    set defaultMuted(value: boolean) {\n        this._mediaPlayer.defaultMuted = value;\n    }\n\n    get defaultPlaybackRate(): number {\n        return this._mediaPlayer ? this._mediaPlayer.defaultPlaybackRate : 1;\n    }\n    set defaultPlaybackRate(value: number) {\n        this._mediaPlayer.defaultPlaybackRate = value;\n    }\n\n    get duration(): number {\n        return this._mediaPlayer && !isNaN(this.mediaPlayer.duration) ? this._mediaPlayer.duration : 0;\n    }\n\n    get ended(): boolean {\n        return this._mediaPlayer ? this._mediaPlayer.ended : false;\n    }\n\n    get loop(): boolean {\n        return this._mediaPlayer ? this._mediaPlayer.loop : false;\n    }\n    set loop(value: boolean) {\n        this._mediaPlayer.loop = value;\n    }\n\n    get muted(): boolean {\n        return this._mediaPlayer ? this._mediaPlayer.muted : false;\n    }\n    set muted(value: boolean) {\n        this._mediaPlayer.muted = value;\n    }\n\n    get networkState(): number {\n        return this._mediaPlayer.networkState;\n    }\n\n    get paused(): boolean {\n        return this._mediaPlayer ? this._mediaPlayer.paused : true;\n    }\n\n    get playbackRate(): number {\n        return this._mediaPlayer ? this._mediaPlayer.playbackRate : 1;\n    }\n    set playbackRate(value: number) {\n        this._mediaPlayer.playbackRate = value;\n    }\n\n    get played(): TimeRanges {\n        return this._mediaPlayer ? this._mediaPlayer.played : new TimeRanges();\n    }\n\n    get preload(): '' | 'auto' | 'metadata' | 'none' {\n        return this._mediaPlayer ? this._mediaPlayer.preload : 'auto';\n    }\n    set preload(value: '' | 'auto' | 'metadata' | 'none') {\n        this._mediaPlayer.preload = value;\n    }\n\n    get readyState(): number {\n        return this._mediaPlayer ? this._mediaPlayer.readyState : 0;\n    }\n\n    get seekable(): TimeRanges {\n        return this._mediaPlayer ? this._mediaPlayer.seekable : new TimeRanges();\n    }\n\n    get seeking(): boolean {\n        return this._mediaPlayer ? this._mediaPlayer.seeking : false;\n    }\n\n    get src(): string {\n        return this._mediaPlayer ? this._mediaPlayer.src : '';\n    }\n    set src(value: string) {\n        this._mediaPlayer.src = value;\n    }\n\n    get textTracks(): Array<TextTrack> {\n        return this._mediaPlayer ? Array.from(this._mediaPlayer.textTracks) : [];\n    }\n\n    get volume(): number {\n        return this._mediaPlayer ? this._mediaPlayer.volume : 1;\n    }\n    set volume(value: number) {\n        if (this._mediaPlayer) {\n            this._mediaPlayer.volume = value;\n        }\n    }\n\n    get fullscreen(): boolean {\n        return this._mediaPlayer ? this._fullscreen : false;\n    }\n    set fullscreen(value: boolean) {\n        this._fullscreen = value;\n        this.fullscreenEvent.next(value);\n    }\n\n    setMediaPlayer(hostElement: HTMLElement, mediaPlayer: HTMLMediaElement): void {\n        this._hostElement = hostElement;\n        this._mediaPlayer = mediaPlayer;\n\n        this.initEvent.next(true);\n    }\n\n    /**\n     * Toggle playing state\n     */\n    togglePlay(): void {\n\n        // prevent any action is not loaded\n        if (this.loaded === false) {\n            return;\n        }\n\n        if (this.paused) {\n            this.play();\n        } else {\n            this.pause();\n        }\n    }\n\n    /**\n     * Starts playing the audio/video\n     */\n    play(): void {\n        this._mediaPlayer.play();\n    }\n\n    /**\n     * Pauses the currently playing audio/video\n     */\n    pause(): void {\n        this._mediaPlayer.pause();\n    }\n\n    /**\n     * Re-loads the audio/video element\n     */\n    load(): void {\n        this._mediaPlayer.load();\n    }\n\n    /**\n     * Checks if the browser can play the specified audio/video type\n     */\n    canPlayType(type: string): string {\n        return this._mediaPlayer.canPlayType(type);\n    }\n\n    /**\n     * Adds a new text track to the audio/video\n     */\n    addTextTrack(kind: 'subtitles' | 'captions' | 'descriptions' | 'chapters' | 'metadata', label: string, language: string): TextTrack {\n        return this._mediaPlayer.addTextTrack(kind, label, language);\n    }\n\n    /**\n     * Attempt to display media in fullscreen mode\n     */\n    requestFullscreen(): void {\n\n        // get the host element (we need to do some browser specific checks and typescript complains)\n         \n        const host = this._hostElement as any;\n        const requestFullscreen = host.requestFullscreen || host.webkitRequestFullscreen || host.msRequestFullscreen || host.mozRequestFullScreen;\n\n        // if we can perform the action then perform it and update the state\n        if (requestFullscreen) {\n            requestFullscreen.call(host);\n\n            // update the internal state\n            this.fullscreen = true;\n        }\n    }\n\n    /**\n     * Exit full screen mode\n     */\n    exitFullscreen(): void {\n\n        // get the document element (we need to do some browser specific checks and typescript complains)\n         \n        const host = document as any;\n        const exitFullscreen = host.exitFullscreen || host.webkitExitFullscreen || host.msExitFullscreen || host.mozCancelFullScreen;\n\n        // if we can perform the action then perform it and update the state\n        if (exitFullscreen) {\n            exitFullscreen.call(host);\n\n            // update the internal state\n            this.fullscreen = false;\n        }\n    }\n\n    /**\n     * Toggle Fullscreen State\n     */\n    toggleFullscreen(): void {\n        if (this.fullscreen) {\n            this.exitFullscreen();\n        } else {\n            this.requestFullscreen();\n        }\n    }\n\n    fullscreenChange(): void {\n        // get the document element (we need to do some browser specific checks and typescript complains)\n         \n        const host = document as any;\n\n        // set the fullscreen state (this also emits the event)\n        this.fullscreen = host.fullscreen || host.webkitIsFullScreen || host.mozFullScreen || host.msFullscreenElement !== null && host.msFullscreenElement !== undefined;\n    }\n\n    /**\n     * Extract the frames from the video\n     */\n    getFrames(width: number, height: number): Observable<ExtractedFrame> {\n\n        if (this.type === 'video') {\n            return this._frameExtractionService.getFrameThumbnails(this.source, width, height, 0, this.duration, 10);\n        }\n\n        return from([]);\n    }\n\n    hideSubtitleTracks(): void {\n        for (let index = 0; index < this.textTracks.length; index++) {\n            this.textTracks[index].mode = 'hidden';\n        }\n    }\n\n    private getMuteAriaLabel(volume: number): string {\n        return volume === 0 ? 'Unmute' : 'Mute';\n    }\n\n    private getPlayAriaLabel(isPlaying: boolean): string {\n        return isPlaying ? 'Pause' : 'Play';\n    }\n\n    private getFullscreenAriaLabel(isFullscreen: boolean): string {\n        return isFullscreen ? 'Exit full screen' : 'Full screen';\n    }\n\n    private getSubtitlesAriaLabel(track: string): string {\n        return `Select subtitles, ${track} currently selected.`;\n    }\n}\n"]}