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mix.html
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mix.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0"/>
<meta name="format-detection" content="telephone=no"/>
<title>Web Audio API 移动端兼容性测试</title>
<style>
section.channels {
height: 40px;
}
section.channels label {
width: 80px;
display: inline-block;
height: 25px;
line-height: 25px;
}
section.channels input {
width: 200px;
vertical-align: middle;
}
</style>
</head>
<body>
<h1>Web Audio API 混音测试</h1>
<!--<p>
AudioContext:
<script type="text/javascript">
document.write(typeof AudioContext);
</script>
</p>
<p>
webkitAudioContext:
<script type="text/javascript">
document.write(typeof webkitAudioContext);
</script>
</p>-->
<!--<p>
<input type="button" id="load" value="Load"/>
</p>
<p>
<input type="button" id="mp3" disabled value="MP3"/>
<input type="button" id="aac_he_v1" disabled value="AAC_HE_v1"/>
<input type="button" id="aac_he_v2" disabled value="AAC_HE_v2"/>
<input type="button" id="aac_lc" disabled value="AAC_LC"/>
</p>-->
<div>
<section class="channels">
<label for="rectangle1">方形波1：</label>
<input id="rectangle1" type="range" value="1" step="0.01" max="1" min="0">
</section>
<section class="channels">
<label for="rectangle2">方形波2：</label>
<input id="rectangle2" type="range" value="1" step="0.01" max="1" min="0">
</section>
<section class="channels">
<label for="triangle">三角波：</label>
<input id="triangle" type="range" value="1" step="0.01" max="1" min="0">
</section>
<section class="channels">
<label for="noise">噪波：</label>
<input id="noise" type="range" value="1" step="0.01" max="1" min="0">
</section>
<p>
<input type="button" id="play" disabled value="加载中...0/4"/>
</p>
<p>
<input type="button" id="jump" disabled value="跳！"/>
<input type="button" id="gold" disabled value="金币！"/>
<input type="button" id="kick" disabled value="踩！"/>
</p>
</div>
<script type="text/javascript">
(function () {
var EXT_NAME = '.mp3';
var Ctx = window.webkitAudioContext ? window.webkitAudioContext : window.AudioContext;
var ctx = new Ctx();
var compressor = ctx.createDynamicsCompressor();
compressor.connect(ctx.destination);
var destinationNode = compressor;
var Sound = function () {
this.src = null;
this.buffer = null;
this.isLoaded = false;
this.load = function (src, callback) {
this.src = src;
var request = new XMLHttpRequest();
var that = this;
request.open('GET', this.src, true);
request.responseType = 'arraybuffer';
request.onload = function () {
ctx.decodeAudioData(request.response, function (buffer) {
that.buffer = buffer;
that.isLoaded = true;
if (typeof callback === 'function') {
callback(buffer);
}
}, function(){
//decode fail
alert('source not support');
});
};
request.send();
};
this.volume = 1;
this.loop = false;
this.loopStart = 0;
this.loopEnd = 0;
this.volumeNode = null;
this.sourceNode = null;
};
Sound.prototype.play = function () {
if (this.isLoaded) {
var source = ctx.createBufferSource();
source.buffer = this.buffer;
this.volumeNode = ctx.createGain();
this.volumeNode.gain.value = this.volume;
source.loopStart = this.loopStart;
source.loopEnd = this.loopEnd;
source.loop = this.loop;
source.connect(this.volumeNode);
this.volumeNode.connect(destinationNode);
source.start(0);
this.sourceNode = source;
}
};
Sound.prototype.setVolume = function (volume) {
this.volume = volume;
if (this.volumeNode) {
this.volumeNode.gain.value = volume;
}
};
Sound.prototype.setLoop = function (loopStart, loopEnd) {
if (loopStart === false) {
this.loop = false;
} else {
this.loop = true;
this.loopStart = loopStart;
this.loopEnd = loopEnd;
}
if (this.sourceNode) {
this.sourceNode.loopStart = this.loopStart;
this.sourceNode.loopEnd = this.loopEnd;
this.sourceNode.loop = this.loop;
}
};
(function (){
var rectangle1, rectangle2, triangle, noise;
var loadedNum = 0;
var loadedCallback = function(){
loadedNum ++;
document.getElementById('play').value = '加载中...' + loadedNum + '/4';
if (loadedNum >= 4) {
document.getElementById('play').removeAttribute('disabled');
document.getElementById('play').value = '播放';
}
};
rectangle1 = new Sound();
rectangle2 = new Sound();
triangle = new Sound();
noise = new Sound();
rectangle1.load('res/rectangle1' + EXT_NAME, loadedCallback);
rectangle2.load('res/rectangle2' + EXT_NAME, loadedCallback);
triangle .load('res/triangle' + EXT_NAME, loadedCallback);
noise .load('res/noise' + EXT_NAME, loadedCallback);
rectangle1.setLoop(2.40, 88.8);
rectangle2.setLoop(2.40, 88.8);
triangle .setLoop(2.40, 88.8);
noise .setLoop(2.40, 88.8);
document.getElementById('play').onclick = function () {
rectangle1.play();
rectangle2.play();
triangle .play();
noise .play();
document.getElementById('play').setAttribute('disabled', 'disabled');
};
document.getElementById('rectangle1').oninput = function () {
rectangle1.setVolume(this.value);
};
document.getElementById('rectangle2').oninput = function () {
rectangle2.setVolume(this.value);
};
document.getElementById('triangle').oninput = function () {
triangle.setVolume(this.value);
};
document.getElementById('noise').oninput = function () {
noise.setVolume(this.value);
};
})();
(function () {
var jump, gold, kick;
gold = new Sound();
gold.load('res/gold.mp3', function () {
document.getElementById('gold').removeAttribute('disabled');
});
document.getElementById('gold').onclick = function () {
gold.play();
};
jump = new Sound();
jump.load('res/jump.mp3', function () {
document.getElementById('jump').removeAttribute('disabled');
});
document.getElementById('jump').onclick = function () {
jump.play();
};
kick = new Sound();
kick.load('res/kick.mp3', function () {
document.getElementById('kick').removeAttribute('disabled');
});
document.getElementById('kick').onclick = function () {
kick.play();
};
})();
/*var sound_mp3, sound_aac_he_v2, sound_aac_he_v1, sound_aac_lc;
document.getElementById('load').onclick = function () {
sound_mp3 = new Sound();
sound_mp3.load('res/gold.mp3', function () {
document.getElementById('mp3').removeAttribute('disabled');
});
sound_aac_he_v2 = new Sound();
sound_aac_he_v2.load('res/gold_hev2.mp4', function () {
document.getElementById('aac_he_v2').removeAttribute('disabled');
});
sound_aac_he_v1 = new Sound();
sound_aac_he_v1.load('res/gold_hev1.mp4', function () {
document.getElementById('aac_he_v1').removeAttribute('disabled');
});
sound_aac_lc = new Sound();
sound_aac_lc.load('res/jump_lc.mp4', function () {
document.getElementById('aac_lc').removeAttribute('disabled');
});
};
document.getElementById('mp3').onclick = function () {
sound_mp3.play();
};
document.getElementById('aac_he_v2').onclick = function () {
sound_aac_he_v2.play();
};
document.getElementById('aac_he_v1').onclick = function () {
sound_aac_he_v1.play();
};
document.getElementById('aac_lc').onclick = function () {
sound_aac_lc.play();
};*/
})();
</script>
</body>
</html>