Portable pixmap Binary to png converter.
https://en.wikipedia.org/wiki/Netpbm_format
Supports Magic Number P6. Produced by qemu qmp command:
screendump
----------
Save screen into PPM image.
Arguments:
- "filename": file path (json-string)
Example:
-> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } }
<- { "return": {} }
usage:
ppmbin = require 'ppm-bin'
ppmbin.convert 'image.ppm', 'image.png', (err) ->
console.log err