Icard/angular-clarity-master(work.../node_modules/pngjs/lib/constants.js

33 lines
662 B
JavaScript

"use strict";
module.exports = {
PNG_SIGNATURE: [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a],
TYPE_IHDR: 0x49484452,
TYPE_IEND: 0x49454e44,
TYPE_IDAT: 0x49444154,
TYPE_PLTE: 0x504c5445,
TYPE_tRNS: 0x74524e53, // eslint-disable-line camelcase
TYPE_gAMA: 0x67414d41, // eslint-disable-line camelcase
// color-type bits
COLORTYPE_GRAYSCALE: 0,
COLORTYPE_PALETTE: 1,
COLORTYPE_COLOR: 2,
COLORTYPE_ALPHA: 4, // e.g. grayscale and alpha
// color-type combinations
COLORTYPE_PALETTE_COLOR: 3,
COLORTYPE_COLOR_ALPHA: 6,
COLORTYPE_TO_BPP_MAP: {
0: 1,
2: 3,
3: 1,
4: 2,
6: 4,
},
GAMMA_DIVISION: 100000,
};