Firefox SDK: correct way to play audio from the url in 2015 year?

问题

I want to add ability to my addon to play audio from URL. At MDN I not found information about this. I found this and this and this and this answers - but this is about local file and what the correct answer for 2015 year?

回答1:

I have an answer from 2016 ;)

That code will not work with Multi-process Firefox (will be released in 2016):

var window = require('sdk/window/utils').getMostRecentBrowserWindow();
var audio = new window.Audio('http://example.com/audio.mp3');
vaudio.play();

Because sdk/window/utils. To understand why read this topic on MDN.

Solution is page-worker:

main.js:

var pageWorkers = require("sdk/page-worker");
var audioWorker = pageWorkers.Page({
    contentURL: './blank.html', //blank html file in `data` directory
    contentScriptFile: './worker.js'
});

// for example i want to play song from url
var url = 'http://some-url.com/some-song.mp3';
// send msg to worker to play this url
audioWorker.port.emit('play', url);

worker.js

var audio = new window.Audio;

self.port.on('play', function(url) {
    audio.src = url;
    audio.play();
});

It works in my extension and will work with new Multi-process Firefox release.

回答2:

@Noitidart Future is coming and at 2015 you can write much less code!

var window = require('sdk/window/utils').getMostRecentBrowserWindow();
var audio = new window.Audio('http://example.com/audio.mp3');
audio.play();

回答3:

This works for me Im not sure how 2015 it is, but i wrote like a couple months ago:

Cu.import('resource://gre/modules/osfile.jsm');
Cu.import('resource://gre/modules/Services.jsm');

function audioContextCheck() {
    if (typeof Services.appShell.hiddenDOMWindow.AudioContext !== 'undefined') {
        return new Services.appShell.hiddenDOMWindow.AudioContext();
    } else if (typeof Services.appShell.hiddenDOMWindow.mozAudioContext !== 'undefined') {
        return new Services.appShell.hiddenDOMWindow.mozAudioContext();
    } else {
        throw new Error('AudioContext not supported');
    }
}

var audioContext = audioContextCheck();

var audioBuffer;

var getSound = new XMLHttpRequest();
getSound.open('get', OS.Path.toFileURI(OS.Path.join(OS.Constants.Path.desktopDir, 'zirzir.mp3')), true);
getSound.responseType = 'arraybuffer';
getSound.onload = function() {
    audioContext.decodeAudioData(getSound.response, function(buffer) {
        audioBuffer = buffer;
        var playSound = audioContext.createBufferSource();
        playSound.buffer = audioBuffer;
        playSound.connect(audioContext.destination);
        playSound.start(audioContext.currentTime);
    });
};

来源：https://stackoverflow.com/questions/32755863/firefox-sdk-correct-way-to-play-audio-from-the-url-in-2015-year

标签

firefox-addon

firefox-addon-sdk