Question

35

Create image from ArrayBuffer in Nodejs

rated 0 times [ 38] [ 3] / answers: 1 / hits: 18192 / 8 Years ago, fri, march 25, 2016, 12:00:00

I'm trying to create an image file from chunks of ArrayBuffers.

all= fs.createWriteStream(out.+imgtype);



for(i=0; i<end; i++){

    all.write(picarray[i]);

}



all.end();

where picarray contains ArrayBuffer chunks. However, I get the error
TypeError: Invalid non-string/buffer chunk.

How can I convert ArrayBuffer chunks into an image?

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answered 8 Years ago milor · Accepted Answer

Have you tried first converting it into a node.js. Buffer? (this is the native node.js Buffer interface, whereas ArrayBuffer is the interface for the browser and not completely supported for node.js write operations).

Something along the line of this should help:

all= fs.createWriteStream(out.+imgtype);



for(i=0; i<end; i++){

    var buffer = new Buffer( new Uint8Array(picarray[i]) );

    all.write(buffer);

}

all.end();