| 1 | 'use strict';
|
| 2 |
|
| 3 |
|
| 4 | var ParserStream = require('../common').ParserStream;
|
| 5 | var str2arr = require('../common').str2arr;
|
| 6 | var sliceEq = require('../common').sliceEq;
|
| 7 |
|
| 8 |
|
| 9 | var SIG_BM = str2arr('BM');
|
| 10 |
|
| 11 |
|
| 12 | module.exports = function () {
|
| 13 | var parser = new ParserStream();
|
| 14 |
|
| 15 | parser._bytes(26, function (data) {
|
| 16 | parser._skipBytes(Infinity);
|
| 17 |
|
| 18 | if (!sliceEq(data, 0, SIG_BM)) {
|
| 19 | parser.push(null);
|
| 20 | return;
|
| 21 | }
|
| 22 |
|
| 23 | parser.push({
|
| 24 | width: data.readUInt16LE(18),
|
| 25 | height: data.readUInt16LE(22),
|
| 26 | type: 'bmp',
|
| 27 | mime: 'image/bmp',
|
| 28 | wUnits: 'px',
|
| 29 | hUnits: 'px'
|
| 30 | });
|
| 31 |
|
| 32 | parser.push(null);
|
| 33 | });
|
| 34 |
|
| 35 | return parser;
|
| 36 | };
|