3

I've noticed the audio playback volume is not 100% in Safari, even though I have the assigned control set to "1."

Is there another to do this, or is this possibly an issue in the script?

Using this control (as below) the audio plays at 100% in Firefox.

Update: Apparently the control I'm using for volume isn't recognized in Safari (see below), so I'm now seeking a way to play audio at 100% volume, using this player below, in Safari.

According to the Safari Developer Library, reading volume always returns 1, which is what I've set my player to; HOWEVER, the volume is slightly lower in Safari than in other browsers.

Could the problem be within my script, or is this an issue solely with Safari?

ALSO, I've noticed that changing the volume parameter attenuates volume in Safari, but 1 is not equal to 100%; thus, it does have some effect, but still problematic.

Here's my HTML:

<head>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="src/jquery.ubaplayer.js"></script>
<script>
jQuery(document).ready(function() { 
   jQuery.noConflict();
   jQuery(function(){
            jQuery("#ubaPlayer").ubaPlayer({
            codecs: [{name:"MP3", codec: 'audio/mpeg;'}]
            });

    });
    jQuery('a[rel=vidbox]').click(function () {

        if (jQuery("#ubaPlayer").ubaPlayer("playing") === true) {
            jQuery("#ubaPlayer").ubaPlayer("pause");
            }
        return false;
    });
})
</script>
</head>

<body>
<div id="ubaPlayer"></div>
    <ul class="controls">
        <li><a class="audioButton" href="mp3/dontthinktwice.mp3">
        Don't Think Twice (Bob Dylan)</a></li>
        <li><a class="audioButton" href="mp3/livingforthecity.mp3">
        Living for the City (Stevie Wonder)</a></li>
    </ul>
</body>

Audio Player Javascript:

(function($) {
var defaults = {
    audioButtonClass: "audioButton",
    autoPlay: null,
    codecs: [{
        name: "OGG",
        codec: 'audio/ogg; codecs="vorbis"'
    }, {
        name: "MP3",
        codec: 'audio/mpeg'
    }],
    continuous: false,
    extension: null,
    flashAudioPlayerPath: "libs/swf/player.swf",
    flashExtension: ".mp3",
    flashObjectID: "audioPlayer",
    loadingClass: "loading",
    loop: false,
    playerContainer: "player",
    playingClass: "playing",
    swfobjectPath: "libs/swfobject/swfobject.js",
    volume: 1
},
    currentTrack, isPlaying = false,
    isFlash = false,
    audio, $buttons, $tgt, $el, playTrack, resumeTrack, pauseTrack, methods = {
        play: function(element) {
            $tgt = element;
            currentTrack = _methods.getFileNameWithoutExtension($tgt.attr("href"));
            isPlaying = true;
            $tgt.addClass(defaults.loadingClass);
            $buttons.removeClass(defaults.playingClass);

            if (isFlash) {
                if (audio) {
                    _methods.removeListeners(window);
                }
                audio = document.getElementById(defaults.flashObjectID);
                _methods.addListeners(window);
                audio.playFlash(currentTrack + defaults.extension);
            } else {
                if (audio) {
                    audio.pause();
                    _methods.removeListeners(audio);
                }
                audio = new Audio("");
                _methods.addListeners(audio);
                audio.id = "audio";
                audio.loop = defaults.loop ? "loop" : "";
                audio.volume = defaults.volume;
                audio.src = currentTrack + defaults.extension;
                audio.play();
            }
        },

        pause: function() {
            if (isFlash) {
                audio.pauseFlash();
            } else {
                audio.pause();
            }

            $tgt.removeClass(defaults.playingClass);
            isPlaying = false;
        },

        resume: function() {
            if (isFlash) {
                audio.playFlash();
            } else {
                audio.play();
            }
            $tgt.addClass(defaults.playingClass);
            isPlaying = true;
        },

        playing: function() {
            return isPlaying;
        }
    },

    _methods = {
        init: function(options) {
            var types;

            //set defaults
            $.extend(defaults, options);
            $el = this;

            //listen for clicks on the controls
            $(".controls").bind("click", function(event) {
                _methods.updateTrackState(event);
                return false;
            });
            $buttons = $("." + defaults.audioButtonClass);

            types = defaults.codecs;
            for (var i = 0, ilen = types.length; i < ilen; i++) {
                var type = types[i];
                if (_methods.canPlay(type)) {
                    defaults.extension = [".", type.name.toLowerCase()].join("");
                    break;
                }
            }

            if (!defaults.extension || isFlash) {
                isFlash = true;
                defaults.extension = defaults.flashExtension;
            }

            if (isFlash) {
                $el.html("<div id='" + defaults.playerContainer + "'/>");
                $.getScript(defaults.swfobjectPath, function() {
                    swfobject.embedSWF(defaults.flashAudioPlayerPath, defaults.playerContainer, "0", "0", "9.0.0", "swf/expressInstall.swf", false, false, {
                        id: defaults.flashObjectID
                    }, _methods.swfLoaded);
                });
            } else {
                if (defaults.autoPlay) {
                    methods.play(defaults.autoPlay);
                }
            }
        },

        updateTrackState: function(evt) {
            $tgt = $(evt.target);
            if (!$tgt.hasClass("audioButton")) {
                return;
            }
            if (!audio || (audio && currentTrack !== _methods.getFileNameWithoutExtension($tgt.attr("href")))) {
                methods.play($tgt);
            } else if (!isPlaying) {
                methods.resume();
            } else {
                methods.pause();
            }
        },

        addListeners: function(elem) {
            $(elem).bind({
                "canplay": _methods.onLoaded,
                "error": _methods.onError,
                "ended": _methods.onEnded
            });
        },

        removeListeners: function(elem) {
            $(elem).unbind({
                "canplay": _methods.onLoaded,
                "error": _methods.onError,
                "ended": _methods.onEnded
            });
        },

        onLoaded: function() {
            $buttons.removeClass(defaults.loadingClass);
            $tgt.addClass(defaults.playingClass);

            audio.play();
        },

        onError: function() {
            $buttons.removeClass(defaults.loadingClass);
            if (isFlash) {
                _methods.removeListeners(window);
            } else {
                _methods.removeListeners(audio);
            }
        },

        onEnded: function() {
            isPlaying = false;
            $tgt.removeClass(defaults.playingClass);
            currentTrack = "";
            if (isFlash) {
                _methods.removeListeners(window);
            } else {
                _methods.removeListeners(audio);
            }

            if (defaults.continuous) {
                var $next = $tgt.next().length ? $tgt.next() : $(defaults.audioButtonClass).eq(0);
                methods.play($next);
            }

        },

        canPlay: function(type) {
            if (!document.createElement("audio").canPlayType) {
                return false;
            } else {
                return document.createElement("audio").canPlayType(type.codec).match(/maybe|probably/i) ? true : false;
            }
        },

        swfLoaded: function() {
            if (defaults.autoPlay) {
                setTimeout(function() {
                    methods.play(defaults.autoPlay);
                }, 500);
            }
        },

        getFileNameWithoutExtension: function(fileName) {
            //this function take a full file name and returns an extensionless file name
            //ex. entering foo.mp3 returns foo
            //ex. entering foo returns foo (no change)
            var fileNamePieces = fileName.split('.');
            fileNamePieces.pop();
            return fileNamePieces.join(".");
        }
    };

$.fn.ubaPlayer = function(method) {
    if (methods[method]) {
        return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
    } else if (typeof method === "object" || !method) {
        return _methods.init.apply(this, arguments);
    } else {
        $.error("Method " + method + " does not exist on jquery.ubaPlayer");
    }
};})(jQuery);
John
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pianoman
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    Safari uses WebKit Engine and Firefox uses Gecko Engine. They both interpret JavaScript in different ways. – ShuklaSannidhya Mar 22 '13 at 04:37
  • @Sann - I've noticed that changing the volume parameter attenuates volume in Safari, but 1 is not equal to 100%. Thus, it does have some effect, but not full control. – pianoman Mar 22 '13 at 04:52
  • @Sann No they don't. That's just plain wrong. What differs is support for certain features and APIs. – Oliver Weichhold Mar 23 '13 at 09:04
  • Unfortunately I couldn't find much documentation on volume control for HTML5 audio using Javascript. – pianoman Mar 23 '13 at 09:13

2 Answers2

4

Are you talking about Mobile Safari? In that case the volume cannot be set with Javascript at all.

Have a read of this: http://www.ibm.com/developerworks/library/wa-ioshtml5/

If you are talking about desktop Safari my gut feeling is that its the browser that is at fault here, and not your code.

Jimmery
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  • Nope, this is the desktop version only. I understand the constraints of the mobile version. – pianoman Jul 22 '13 at 03:40
  • It would be good if the content from the link was quoted or described, as it is now 404ing – Djave Feb 20 '23 at 14:20
  • Archive of link https://web.archive.org/web/20201028094058/http://www.ibm.com/developerworks/library/wa-ioshtml5/ – claptimes Mar 15 '23 at 11:49
1

Probably it will be helpful for you to use

  • Web Audio API https://www.html5rocks.com/en/tutorials/webaudio/intro/ with the gain (not volume) control. It's quite unified for all browsers (however, IE doesn't support it)
  • Use an abstraction on top of html5/web audio API like https://howlerjs.com/
  • The final option I can see - pass your html5 audio to the WebAudio API source and control gain using JS (you can find more details here ) It's quite the same as option #1, but will require almost no changes to your code.
Alex Zheka
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