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34 lines
721 B
34 lines
721 B
4 years ago
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// decode bmp buffer
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'use strict'
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var bmp = require('bmp-js')
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module.exports = function read (data, o) {
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var bmpData = bmp.decode(Buffer.from(data))
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var width = bmpData.width
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var height = bmpData.height
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var pixels = new Uint8Array(width * height * 4)
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// bmp stores stuff as ABGR seq
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for (var i = 0; i < pixels.length; i+=4) {
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var alpha = bmpData.data[i + 0];
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var blue = bmpData.data[i + 1];
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var green = bmpData.data[i + 2];
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var red = bmpData.data[i + 3];
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pixels[i + 0] = red;
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pixels[i + 1] = green;
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pixels[i + 2] = blue;
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pixels[i + 3] = bmpData.is_with_alpha ? alpha : 0xff;
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}
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return {
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data: pixels,
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width: bmpData.width,
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height: bmpData.height
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}
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}
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