@pixi/sound/lib/htmlaudio/HTMLAudioMedia.mjs.map

WebAudio API playback library with filters

{"version":3,"file":"HTMLAudioMedia.mjs","sources":["../../src/htmlaudio/HTMLAudioMedia.ts"],"sourcesContent":["import { EventEmitter } from 'pixi.js';\nimport { Filter } from '../filters/Filter';\nimport { IMedia } from '../interfaces/IMedia';\nimport { LoadedCallback, Sound } from '../Sound';\nimport { HTMLAudioContext } from './HTMLAudioContext';\nimport { HTMLAudioInstance } from './HTMLAudioInstance';\n\n/**\n * The fallback version of Sound which uses `<audio>` instead of WebAudio API.\n * @memberof htmlaudio\n * @extends PIXI.EventEmitter\n */\nclass HTMLAudioMedia extends EventEmitter implements IMedia\n{\n    public parent: Sound;\n    private _source: HTMLAudioElement;\n\n    public init(parent: Sound): void\n    {\n        this.parent = parent;\n        this._source = parent.options.source as HTMLAudioElement || new Audio();\n        if (parent.url)\n        {\n            this._source.src = parent.url;\n        }\n    }\n\n    // Implement create\n    public create(): HTMLAudioInstance\n    {\n        return new HTMLAudioInstance(this);\n    }\n\n    /**\n     * If the audio media is playable (ready).\n     * @readonly\n     */\n    public get isPlayable(): boolean\n    {\n        return !!this._source && this._source.readyState === 4;\n    }\n\n    /**\n     * THe duration of the media in seconds.\n     * @readonly\n     */\n    public get duration(): number\n    {\n        return this._source.duration;\n    }\n\n    /**\n     * Reference to the context.\n     * @readonly\n     */\n    public get context(): HTMLAudioContext\n    {\n        return this.parent.context as HTMLAudioContext;\n    }\n\n    /** The collection of filters, does not apply to HTML Audio. */\n    public get filters(): Filter[]\n    {\n        return null;\n    }\n    public set filters(_filters: Filter[])\n    {\n        console.warn('HTML Audio does not support filters');\n    }\n\n    // Override the destroy\n    public destroy(): void\n    {\n        this.removeAllListeners();\n\n        this.parent = null;\n\n        if (this._source)\n        {\n            this._source.src = '';\n            this._source.load();\n            this._source = null;\n        }\n    }\n\n    /**\n     * Get the audio source element.\n     * @type {HTMLAudioElement}\n     * @readonly\n     */\n    public get source(): HTMLAudioElement\n    {\n        return this._source;\n    }\n\n    // Implement the method to being preloading\n    public load(callback?: LoadedCallback): void\n    {\n        const source = this._source;\n        const sound = this.parent;\n\n        // See if the source is already loaded\n        if (source.readyState === 4)\n        {\n            sound.isLoaded = true;\n            const instance = sound.autoPlayStart();\n\n            if (callback)\n            {\n                setTimeout(() =>\n                {\n                    callback(null, sound, instance);\n                }, 0);\n            }\n\n            return;\n        }\n\n        // If there's no source, we cannot load\n        if (!sound.url)\n        {\n            callback(new Error('sound.url or sound.source must be set'));\n\n            return;\n        }\n\n        // Set the source\n        source.src = sound.url;\n\n        const onLoad = () =>\n        {\n            // eslint-disable-next-line @typescript-eslint/no-use-before-define\n            removeListeners();\n            sound.isLoaded = true;\n            const instance = sound.autoPlayStart();\n\n            if (callback)\n            {\n                callback(null, sound, instance);\n            }\n        };\n\n        const onAbort = () =>\n        {\n            // eslint-disable-next-line @typescript-eslint/no-use-before-define\n            removeListeners();\n            if (callback)\n            {\n                callback(new Error('Sound loading has been aborted'));\n            }\n        };\n\n        const onError = () =>\n        {\n            // eslint-disable-next-line @typescript-eslint/no-use-before-define\n            removeListeners();\n            const message = `Failed to load audio element (code: ${source.error.code})`;\n\n            if (callback)\n            {\n                callback(new Error(message));\n            }\n            else\n            {\n                console.error(message);\n            }\n        };\n\n        // Remove all event listeners\n        const removeListeners = () =>\n        {\n            // Listen for callback\n            source.removeEventListener('canplaythrough', onLoad);\n            source.removeEventListener('load', onLoad);\n            source.removeEventListener('abort', onAbort);\n            source.removeEventListener('error', onError);\n        };\n\n        // Listen for callback\n        source.addEventListener('canplaythrough', onLoad, false);\n        source.addEventListener('load', onLoad, false);\n        source.addEventListener('abort', onAbort, false);\n        source.addEventListener('error', onError, false);\n\n        // Begin the loading\n        source.load();\n    }\n}\n\nexport { HTMLAudioMedia 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