将文件通过管道传输到不同的流

Question

我正在使用 growing-file 读取音频文件并将其通过管道传输到可写流，如下所示：

var GrowingFile = require('growing-file')
var audio = GrowingFile.open('test.wav')
audio.pipe(<some writable stream>);

几分钟后，我想更改流的传输位置。

我试图只创建第二个 audio.pipe(<new writable stream>) 但是这现在只写入两个流。我将如何去杀死第一个流？

Answer 1

不确定这是否是最佳解决方案，但这对我有用：

var GrowingFile = require('growing-file')
var unpipe = require('unpipe');
var audio = GrowingFile.open('test.wav')
audio.pipe(<some writable stream>);

//later in code
unpipe(audio);
audio.pipe(<some new writable stream>);

Answer 2

见readable.unpipe([destination])

var GrowingFile = require('growing-file')
var audio = GrowingFile.open('test.wav')
var writeableStream = <some writable stream>
audio.pipe(writeableStream);

setTimeout(() => {
  audio.unpipe(writeableStream)
  writeableStream = <some other writable stream>
  audio.pipe(writeableStream)
}, 60000)

将文件通过管道传输到不同的流

Piping a file to a different stream

audio-streaming

node.js