I'm fairly new to Buffers and ReadableStreams, so maybe this is a stupid 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 or am I trying to achieve the impossible?
Thanks.
something like this...
import { Readable } from 'stream'
const buffer = new Buffer(img_string, 'base64')
const readable = new Readable()
readable._read = () => {} // _read is required but you can noop it
readable.push(buffer)
readable.push(null)
readable.pipe(consumer) // consume the stream
In the general course, a readable stream's _read
function should collect data from the underlying source and push
it incrementally ensuring you don't harvest a huge source into memory before it's needed.
In this case though you already have the source in memory, so _read
is not required.
Pushing the whole buffer just wraps it in the readable stream api.