mirror of
https://github.com/hiloteam/Hilo.git
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91 lines
2.5 KiB
JavaScript
91 lines
2.5 KiB
JavaScript
/**
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* Hilo
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* Copyright 2015 alibaba.com
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* Licensed under the MIT License
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*/
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/**
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* <iframe src='../../../examples/WebSound.html?noHeader' width = '320' height = '310' scrolling='no'></iframe>
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* <br/>
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* 使用示例:
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* <pre>
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* var audio = WebSound.getAudio({
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* src: 'test.mp3',
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* loop: false,
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* volume: 1
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* }).on('load', function(e){
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* console.log('load');
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* }).on('end', function(e){
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* console.log('end');
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* }).play();
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* </pre>
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* @class 声音播放管理器。
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* @static
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* @module hilo/media/WebSound
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* @requires hilo/media/HTMLAudio
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* @requires hilo/media/WebAudio
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* @requires hilo/util/util
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*/
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var WebSound = {
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_audios: {},
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/**
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* 激活音频功能。注意：需用户事件触发此方法才有效。目前仅对WebAudio有效。
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*/
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enableAudio: function(){
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if(WebAudio.isSupported){
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WebAudio.enable();
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}
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},
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/**
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* 获取音频对象。默认优先使用 WebAudio
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* @param {String|Object} source 若source为String，则为音频src地址；若为Object，则需包含src属性。
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* @param {Boolean} [preferWebAudio=true] 是否优先使用WebAudio，默认 true 。
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* @returns {WebAudio|HTMLAudio} 音频播放对象实例。
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*/
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getAudio: function(source, preferWebAudio){
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if(preferWebAudio === undefined){
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preferWebAudio = true;
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}
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source = this._normalizeSource(source);
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var audio = this._audios[source.src];
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if(!audio){
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if(preferWebAudio && WebAudio.isSupported){
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audio = new WebAudio(source);
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}else if(HTMLAudio.isSupported){
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audio = new HTMLAudio(source);
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}
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this._audios[source.src] = audio;
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}
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return audio;
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},
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/**
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* 删除音频对象。
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* @param {String|Object} source 若source为String，则为音频src地址；若为Object，则需包含src属性。
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*/
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removeAudio: function(source){
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var src = typeof source === 'string' ? source : source.src;
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var audio = this._audios[src];
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if(audio){
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audio.stop();
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audio.off();
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this._audios[src] = null;
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delete this._audios[src];
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}
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},
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/**
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* @private
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*/
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_normalizeSource: function(source){
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var result = {};
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if(typeof source === 'string') result = {src:source};
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else util.copy(result, source);
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return result;
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}
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}; |