mirror of
https://github.com/koel/koel
synced 2024-12-21 18:13:13 +00:00
386 lines
12 KiB
Vue
386 lines
12 KiB
Vue
<template>
|
|
<div id="equalizer">
|
|
<div class="presets">
|
|
<label class="select-wrapper" @change="loadPreset">
|
|
<select v-model="selectedPresetIndex">
|
|
<option value="-1">Preset</option>
|
|
<option v-for="preset in presets" :value="$index">{{* preset.name }}</option>
|
|
</select>
|
|
</label>
|
|
</div>
|
|
<div class="bands">
|
|
<span class="band preamp">
|
|
<input
|
|
type="range"
|
|
min="-20"
|
|
max="20"
|
|
step="0.01"
|
|
data-orientation="vertical"
|
|
v-model="preampGainValue">
|
|
<label>Preamp</label>
|
|
</span>
|
|
|
|
<span class="indicators">
|
|
<span>+20</span>
|
|
<span>0</span>
|
|
<span>-20</span>
|
|
</span>
|
|
|
|
<span class="band amp" v-for="band in bands">
|
|
<input
|
|
type="range"
|
|
min="-20"
|
|
max="20"
|
|
step="0.01"
|
|
data-orientation="vertical"
|
|
:value="band.filter.gain.value">
|
|
<label>{{* band.label }}</label>
|
|
</span>
|
|
</div>
|
|
</div>
|
|
</template>
|
|
|
|
<script>
|
|
import _ from 'lodash';
|
|
import $ from 'jquery';
|
|
import rangeslider from 'rangeslider.js';
|
|
|
|
import equalizerStore from '../../stores/equalizer';
|
|
import utils from '../../services/utils';
|
|
|
|
export default {
|
|
data() {
|
|
return {
|
|
bands: [],
|
|
selectedPresetIndex: -1,
|
|
preampGainValue: 0,
|
|
|
|
presets: equalizerStore.presets,
|
|
};
|
|
},
|
|
|
|
methods: {
|
|
/**
|
|
* Init the equalizer.
|
|
*
|
|
* @param {Element} player The audio player's DOM.
|
|
*/
|
|
init(player) {
|
|
let settings = equalizerStore.get();
|
|
|
|
let AudioContext = window.AudioContext || window.webkitAudioContext || false;
|
|
|
|
if (!AudioContext) {
|
|
return;
|
|
}
|
|
|
|
let context = new AudioContext();
|
|
|
|
this.preampGainNode = context.createGain();
|
|
this.changePreampGain(settings.preamp);
|
|
|
|
let source = context.createMediaElementSource(player);
|
|
source.connect(this.preampGainNode);
|
|
|
|
let prevFilter = null;
|
|
|
|
// Create 10 bands with the frequencies similar to those of Winamp and connect them together.
|
|
[60, 170, 310, 600, 1000, 3000, 6000, 12000, 14000, 16000].forEach((f, i) => {
|
|
let filter = context.createBiquadFilter();
|
|
|
|
if (i === 0) {
|
|
filter.type = 'lowshelf';
|
|
} else if (i === 9) {
|
|
filter.type = 'highshelf';
|
|
} else {
|
|
filter.type = 'peaking';
|
|
}
|
|
|
|
filter.gain.value = settings.gains[i] ? settings.gains[i] : 0;
|
|
filter.Q.value = 1;
|
|
filter.frequency.value = f;
|
|
|
|
if (!prevFilter) {
|
|
this.preampGainNode.connect(filter);
|
|
} else {
|
|
prevFilter.connect(filter);
|
|
}
|
|
|
|
prevFilter = filter;
|
|
|
|
this.bands.push({
|
|
filter,
|
|
label: (f + '').replace('000', 'K'),
|
|
});
|
|
});
|
|
|
|
prevFilter.connect(context.destination);
|
|
|
|
this.$nextTick(this.createRangeSliders);
|
|
},
|
|
|
|
/**
|
|
* Create the UI slider for both the preamp and the normal bands using rangeslider.js.
|
|
*/
|
|
createRangeSliders() {
|
|
$('#equalizer input[type="range"]').each((i, el) => {
|
|
$(el).rangeslider({
|
|
/**
|
|
* Force the polyfill and its styles on all browsers.
|
|
*
|
|
* @type {Boolean}
|
|
*/
|
|
polyfill: false,
|
|
|
|
/**
|
|
* Change the gain/preamp value when the user drags the sliders.
|
|
*
|
|
* @param {Float} position
|
|
* @param {Float} value
|
|
*/
|
|
onSlide: (position, value) => {
|
|
if ($(el).parents('.band').is('.preamp')) {
|
|
this.changePreampGain(value);
|
|
} else {
|
|
this.changeFilterGain(this.bands[i - 1].filter, value);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Save the settings and set the preset index to -1 (which is None) on slideEnd.
|
|
*/
|
|
onSlideEnd: () => {
|
|
this.selectedPresetIndex = -1;
|
|
this.save();
|
|
}
|
|
});
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Change the gain value for the preamp.
|
|
*
|
|
* @param {Number} dbValue The value of the gain, in dB.
|
|
*/
|
|
changePreampGain(dbValue) {
|
|
this.preampGainValue = dbValue;
|
|
this.preampGainNode.gain.value = Math.pow(10, dbValue / 20);
|
|
},
|
|
|
|
/**
|
|
* Change the gain value for a band/filter.
|
|
*
|
|
* @param {Object} filter The filter object
|
|
* @param {Object} value Value of the gain, in dB.
|
|
*/
|
|
changeFilterGain(filter, value) {
|
|
filter.gain.value = value;
|
|
},
|
|
|
|
/**
|
|
* Load a preset when the user select it from the dropdown.
|
|
*/
|
|
loadPreset() {
|
|
if (Number.parseInt(this.selectedPresetIndex, 10) === -1) {
|
|
return;
|
|
}
|
|
|
|
let preset = this.presets[this.selectedPresetIndex];
|
|
|
|
$('#equalizer input[type=range]').each((i, input) => {
|
|
// We treat our preamp slider differently.
|
|
if ($(input).parents('.band').is('.preamp')) {
|
|
this.changePreampGain(preset.preamp);
|
|
} else {
|
|
this.changeFilterGain(this.bands[i - 1].filter, preset.gains[i - 1]);
|
|
input.value = preset.gains[i - 1];
|
|
}
|
|
});
|
|
|
|
this.$nextTick(() => {
|
|
// Update the slider values into GUI.
|
|
$('#equalizer input[type="range"]').rangeslider('update', true);
|
|
});
|
|
|
|
this.save();
|
|
},
|
|
|
|
/**
|
|
* Save the current user's equalizer preferences into local storage.
|
|
*/
|
|
save() {
|
|
equalizerStore.set(this.preampGainValue, _.pluck(this.bands, 'filter.gain.value'));
|
|
},
|
|
},
|
|
|
|
events: {
|
|
'equalizer:init': function (player) {
|
|
if (utils.isAudioContextSupported()) {
|
|
this.init(player);
|
|
}
|
|
},
|
|
},
|
|
};
|
|
</script>
|
|
|
|
<style lang="sass">
|
|
@import "../../../sass/partials/_vars.scss";
|
|
@import "../../../sass/partials/_mixins.scss";
|
|
|
|
#equalizer {
|
|
position: absolute;
|
|
bottom: $footerHeight;
|
|
width: 100%;
|
|
background: rgba(0, 0, 0, 0.9);
|
|
display: flex;
|
|
flex-direction: column;
|
|
left: 0;
|
|
|
|
label {
|
|
margin-top: 8px;
|
|
margin-bottom: 0;
|
|
text-align: left;
|
|
}
|
|
|
|
.presets {
|
|
padding: 8px 16px;
|
|
display: flex;
|
|
flex-wrap: wrap;
|
|
justify-content: space-between;
|
|
flex: 1;
|
|
align-content: center;
|
|
z-index: 1;
|
|
border-bottom: 1px solid rgba(255, 255, 255, .1);
|
|
|
|
|
|
.select-wrapper {
|
|
position: relative;
|
|
margin-bottom: 0;
|
|
|
|
&::after {
|
|
content: '\f107';
|
|
font-family: FontAwesome;
|
|
color: $colorHighlight;
|
|
display: inline-block;
|
|
position: absolute;
|
|
right: 8px;
|
|
top: 3px;
|
|
pointer-events: none;
|
|
}
|
|
}
|
|
|
|
select {
|
|
background: none;
|
|
color: $colorMainText;
|
|
padding-left: 0;
|
|
width: 100px;
|
|
text-transform: none;
|
|
|
|
option {
|
|
color: #333;
|
|
}
|
|
}
|
|
}
|
|
|
|
.bands {
|
|
padding: 16px;
|
|
z-index: 1;
|
|
left: 0;
|
|
display: flex;
|
|
justify-content: space-between;
|
|
font-size: 70%;
|
|
align-items: flex-start;
|
|
|
|
.band {
|
|
display: flex;
|
|
flex-direction: column;
|
|
align-items: center;
|
|
}
|
|
|
|
.indicators {
|
|
height: 100px;
|
|
width: 20px;
|
|
display: flex;
|
|
flex-direction: column;
|
|
justify-content: space-between;
|
|
align-items: center;
|
|
margin-left: -16px;
|
|
opacity: 0;
|
|
transition: .4s;
|
|
|
|
span:first-child {
|
|
line-height: 8px;
|
|
}
|
|
|
|
span:last-child {
|
|
line-height: 8px;
|
|
}
|
|
}
|
|
|
|
&:hover .indicators {
|
|
opacity: 1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The range slider styles
|
|
*/
|
|
.rangeslider {
|
|
background: transparent;
|
|
box-shadow: none;
|
|
|
|
&--vertical {
|
|
min-height: 100px;
|
|
width: 16px;
|
|
|
|
&::before {
|
|
content: " ";
|
|
position: absolute;
|
|
left: 7px;
|
|
width: 2px;
|
|
background: rgba(255, 255, 255, 0.2);
|
|
z-index: 1;
|
|
height: 100%;
|
|
pointer-events: none;
|
|
}
|
|
|
|
.rangeslider__fill {
|
|
width: 2px;
|
|
background: #fff;
|
|
position: absolute;
|
|
left: 7px;
|
|
box-shadow: none;
|
|
border-radius: 0;
|
|
}
|
|
|
|
.rangeslider__handle {
|
|
left: 0;
|
|
background: #fff;
|
|
border: 0;
|
|
height: 2px;
|
|
width: 100%;
|
|
border-radius: 0;
|
|
box-shadow: none;
|
|
|
|
&::after {
|
|
display: none;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@media only screen and (max-width : 768px) {
|
|
position: fixed;
|
|
max-width: 414px;
|
|
left: auto;
|
|
right: 0;
|
|
bottom: $footerHeight + 5px;
|
|
display: block;
|
|
height: auto;
|
|
|
|
label {
|
|
line-height: 20px;
|
|
}
|
|
}
|
|
}
|
|
</style>
|