uniapp实现音频波形图
时间: 2023-11-25 19:04:46 浏览: 369
uniapp实现音频波形图可以使用silk-v3-decoder和wavesurfer库。下面是一个示例代码:
1. 在uniapp项目中安装silk-v3-decoder和wavesurfer库。
2. 在需要显示波形图的页面中引入silk-v3-decoder和wavesurfer库。
```javascript
import silk from 'silk-v3-decoder';
import WaveSurfer from 'wavesurfer.js';
export default {
data() {
return {
wavesurfer: null,
audioUrl: 'your_audio_url',
};
},
mounted() {
this.initWaveSurfer();
this.loadAudio();
},
methods: {
initWaveSurfer() {
this.wavesurfer = WaveSurfer.create({
container: '#waveform',
waveColor: 'violet',
progressColor: 'purple',
cursorColor: 'navy',
barWidth: 2,
barHeight: 1,
barGap: null,
responsive: true,
});
},
loadAudio() {
const xhr = new XMLHttpRequest();
xhr.open('GET', this.audioUrl, true);
xhr.responseType = 'arraybuffer';
xhr.onload = () => {
const arrayBuffer = xhr.response;
const pcmData = silk.decode(arrayBuffer);
this.wavesurfer.loadDecodedBuffer(pcmData);
};
xhr.send();
},
},
};
```
3. 在页面中添加一个容器元素用于显示波形图。
```html
<template>
<view>
<view id="waveform"></view>
</view>
</template>
```
这样就可以在uniapp中实现音频波形图了。
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