Question

I have a library that takes as input a ReadableStream, but my input is just a base64 format image. I could convert the data I have in a Buffer like so:

var img = new Buffer(img_string, 'base64');

But I have no idea how to convert it to a ReadableStream or convert the Buffer I obtained to a ReadableStream.

Is there a way to do this?

Answer 1

You can create a ReadableStream using Node Stream Buffers like so:

// Initialize stream
var myReadableStreamBuffer = new streamBuffers.ReadableStreamBuffer({
  frequency: 10,      // in milliseconds.
  chunkSize: 2048     // in bytes.
}); 

// With a buffer
myReadableStreamBuffer.put(aBuffer);

// Or with a string
myReadableStreamBuffer.put("A String", "utf8");

The frequency cannot be 0 so this will introduce a certain delay.