01bb36d431
This was an accidental copy error from inflator.js. The second argument to deflateInit() is the compression level, not the window bits. We have not strong opinions on an appropriate level, so stick to the default.
85 lines
2.5 KiB
JavaScript
85 lines
2.5 KiB
JavaScript
/*
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* noVNC: HTML5 VNC client
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* Copyright (C) 2020 The noVNC Authors
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* Licensed under MPL 2.0 (see LICENSE.txt)
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*
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* See README.md for usage and integration instructions.
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*/
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import { deflateInit, deflate } from "../vendor/pako/lib/zlib/deflate.js";
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import { Z_FULL_FLUSH, Z_DEFAULT_COMPRESSION } from "../vendor/pako/lib/zlib/deflate.js";
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import ZStream from "../vendor/pako/lib/zlib/zstream.js";
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export default class Deflator {
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constructor() {
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this.strm = new ZStream();
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this.chunkSize = 1024 * 10 * 10;
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this.outputBuffer = new Uint8Array(this.chunkSize);
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deflateInit(this.strm, Z_DEFAULT_COMPRESSION);
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}
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deflate(inData) {
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/* eslint-disable camelcase */
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this.strm.input = inData;
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this.strm.avail_in = this.strm.input.length;
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this.strm.next_in = 0;
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this.strm.output = this.outputBuffer;
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this.strm.avail_out = this.chunkSize;
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this.strm.next_out = 0;
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/* eslint-enable camelcase */
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let lastRet = deflate(this.strm, Z_FULL_FLUSH);
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let outData = new Uint8Array(this.strm.output.buffer, 0, this.strm.next_out);
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if (lastRet < 0) {
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throw new Error("zlib deflate failed");
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}
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if (this.strm.avail_in > 0) {
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// Read chunks until done
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let chunks = [outData];
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let totalLen = outData.length;
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do {
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/* eslint-disable camelcase */
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this.strm.output = new Uint8Array(this.chunkSize);
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this.strm.next_out = 0;
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this.strm.avail_out = this.chunkSize;
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/* eslint-enable camelcase */
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lastRet = deflate(this.strm, Z_FULL_FLUSH);
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if (lastRet < 0) {
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throw new Error("zlib deflate failed");
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}
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let chunk = new Uint8Array(this.strm.output.buffer, 0, this.strm.next_out);
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totalLen += chunk.length;
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chunks.push(chunk);
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} while (this.strm.avail_in > 0);
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// Combine chunks into a single data
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let newData = new Uint8Array(totalLen);
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let offset = 0;
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for (let i = 0; i < chunks.length; i++) {
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newData.set(chunks[i], offset);
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offset += chunks[i].length;
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}
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outData = newData;
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}
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/* eslint-disable camelcase */
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this.strm.input = null;
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this.strm.avail_in = 0;
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this.strm.next_in = 0;
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/* eslint-enable camelcase */
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return outData;
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}
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}
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