'use strict';
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var GenericWorker = require('./GenericWorker');
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var crc32 = require('../crc32');
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var utils = require('../utils');
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/**
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* A worker which calculate the crc32 of the data flowing through.
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* @constructor
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*/
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function Crc32Probe() {
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GenericWorker.call(this, "Crc32Probe");
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this.withStreamInfo("crc32", 0);
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}
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utils.inherits(Crc32Probe, GenericWorker);
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/**
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* @see GenericWorker.processChunk
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*/
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Crc32Probe.prototype.processChunk = function (chunk) {
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this.streamInfo.crc32 = crc32(chunk.data, this.streamInfo.crc32 || 0);
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this.push(chunk);
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};
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module.exports = Crc32Probe;
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