28 lines
594 B
Plaintext
28 lines
594 B
Plaintext
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'use strict';
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/* eslint-disable consistent-return */
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var str2arr = require('../common').str2arr;
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var sliceEq = require('../common').sliceEq;
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var readUInt16LE = require('../common').readUInt16LE;
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var SIG_GIF87a = str2arr('GIF87a');
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var SIG_GIF89a = str2arr('GIF89a');
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module.exports = function (data) {
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if (data.length < 10) return;
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if (!sliceEq(data, 0, SIG_GIF87a) && !sliceEq(data, 0, SIG_GIF89a)) return;
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return {
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width: readUInt16LE(data, 6),
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height: readUInt16LE(data, 8),
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type: 'gif',
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mime: 'image/gif',
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wUnits: 'px',
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hUnits: 'px'
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};
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};
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