@vingle/bmp-js
v0.2.5
Published
A pure javascript BMP encoder and decoder
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12,857
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bmp-js
A pure javascript Bmp encoder and decoder for node.js
Supports all bits decoding(1,4,8,16,24,32) and encoding with 24bit.
Install
npm install bmp-js
How to use
Decode BMP
var bmp = require("bmp-js");
var bmpBuffer = fs.readFileSync('bit24.bmp');
var bmpData = bmp.decode(bmpBuffer);
bmpData
has all properties, including:
- fileSize
- reserved
- offset
- headerSize
- width
- height
- planes
- bitPP
- compress
- rawSize
- hr
- vr
- colors
- importantColors
- palette
- data a. This is a byte array b. The bytes are ordered as follows: ABGR (alpha, blue, green, red) c. 4 bytes represent 1 pixel
Encode RGB
var bmp = require("bmp-js");
var fs = require("fs");
var bmpData = {
data, //Buffer
width, //Number
height //Number
};
var rawData = bmp.encode(bmpData); //defaults to no compression
fs.WriteFileSync('./image.bmp', rawData.data);
License
You can use for free with MIT License