spb/admin-ka

1"use strict";23Object.defineProperty(exports, "__esModule", {4  value: true5});6exports["default"] = void 0;7var _inflator = _interopRequireDefault(require("../inflator.js"));8function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }9function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }10function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }11function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }12function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }13function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }14function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); } /*15 * noVNC: HTML5 VNC client16 * Copyright (C) 2021 The noVNC authors17 * Licensed under MPL 2.0 (see LICENSE.txt)18 *19 * See README.md for usage and integration instructions.20 *21 */22var ZRLE_TILE_WIDTH = 64;23var ZRLE_TILE_HEIGHT = 64;24var ZRLEDecoder = exports["default"] = /*#__PURE__*/function () {25  function ZRLEDecoder() {26    _classCallCheck(this, ZRLEDecoder);27    this._length = 0;28    this._inflator = new _inflator["default"]();29    this._pixelBuffer = new Uint8Array(ZRLE_TILE_WIDTH * ZRLE_TILE_HEIGHT * 4);30    this._tileBuffer = new Uint8Array(ZRLE_TILE_WIDTH * ZRLE_TILE_HEIGHT * 4);31  }32  return _createClass(ZRLEDecoder, [{33    key: "decodeRect",34    value: function decodeRect(x, y, width, height, sock, display, depth) {35      if (this._length === 0) {36        if (sock.rQwait("ZLib data length", 4)) {37          return false;38        }39        this._length = sock.rQshift32();40      }41      if (sock.rQwait("Zlib data", this._length)) {42        return false;43      }44      var data = sock.rQshiftBytes(this._length, false);45      this._inflator.setInput(data);46      for (var ty = y; ty < y + height; ty += ZRLE_TILE_HEIGHT) {47        var th = Math.min(ZRLE_TILE_HEIGHT, y + height - ty);48        for (var tx = x; tx < x + width; tx += ZRLE_TILE_WIDTH) {49          var tw = Math.min(ZRLE_TILE_WIDTH, x + width - tx);50          var tileSize = tw * th;51          var subencoding = this._inflator.inflate(1)[0];52          if (subencoding === 0) {53            // raw data54            var _data = this._readPixels(tileSize);55            display.blitImage(tx, ty, tw, th, _data, 0, false);56          } else if (subencoding === 1) {57            // solid58            var background = this._readPixels(1);59            display.fillRect(tx, ty, tw, th, [background[0], background[1], background[2]]);60          } else if (subencoding >= 2 && subencoding <= 16) {61            var _data2 = this._decodePaletteTile(subencoding, tileSize, tw, th);62            display.blitImage(tx, ty, tw, th, _data2, 0, false);63          } else if (subencoding === 128) {64            var _data3 = this._decodeRLETile(tileSize);65            display.blitImage(tx, ty, tw, th, _data3, 0, false);66          } else if (subencoding >= 130 && subencoding <= 255) {67            var _data4 = this._decodeRLEPaletteTile(subencoding - 128, tileSize);68            display.blitImage(tx, ty, tw, th, _data4, 0, false);69          } else {70            throw new Error('Unknown subencoding: ' + subencoding);71          }72        }73      }74      this._length = 0;75      return true;76    }77  }, {78    key: "_getBitsPerPixelInPalette",79    value: function _getBitsPerPixelInPalette(paletteSize) {80      if (paletteSize <= 2) {81        return 1;82      } else if (paletteSize <= 4) {83        return 2;84      } else if (paletteSize <= 16) {85        return 4;86      }87    }88  }, {89    key: "_readPixels",90    value: function _readPixels(pixels) {91      var data = this._pixelBuffer;92      var buffer = this._inflator.inflate(3 * pixels);93      for (var i = 0, j = 0; i < pixels * 4; i += 4, j += 3) {94        data[i] = buffer[j];95        data[i + 1] = buffer[j + 1];96        data[i + 2] = buffer[j + 2];97        data[i + 3] = 255; // Add the Alpha98      }99      return data;100    }101  }, {102    key: "_decodePaletteTile",103    value: function _decodePaletteTile(paletteSize, tileSize, tilew, tileh) {104      var data = this._tileBuffer;105      var palette = this._readPixels(paletteSize);106      var bitsPerPixel = this._getBitsPerPixelInPalette(paletteSize);107      var mask = (1 << bitsPerPixel) - 1;108      var offset = 0;109      var encoded = this._inflator.inflate(1)[0];110      for (var y = 0; y < tileh; y++) {111        var shift = 8 - bitsPerPixel;112        for (var x = 0; x < tilew; x++) {113          if (shift < 0) {114            shift = 8 - bitsPerPixel;115            encoded = this._inflator.inflate(1)[0];116          }117          var indexInPalette = encoded >> shift & mask;118          data[offset] = palette[indexInPalette * 4];119          data[offset + 1] = palette[indexInPalette * 4 + 1];120          data[offset + 2] = palette[indexInPalette * 4 + 2];121          data[offset + 3] = palette[indexInPalette * 4 + 3];122          offset += 4;123          shift -= bitsPerPixel;124        }125        if (shift < 8 - bitsPerPixel && y < tileh - 1) {126          encoded = this._inflator.inflate(1)[0];127        }128      }129      return data;130    }131  }, {132    key: "_decodeRLETile",133    value: function _decodeRLETile(tileSize) {134      var data = this._tileBuffer;135      var i = 0;136      while (i < tileSize) {137        var pixel = this._readPixels(1);138        var length = this._readRLELength();139        for (var j = 0; j < length; j++) {140          data[i * 4] = pixel[0];141          data[i * 4 + 1] = pixel[1];142          data[i * 4 + 2] = pixel[2];143          data[i * 4 + 3] = pixel[3];144          i++;145        }146      }147      return data;148    }149  }, {150    key: "_decodeRLEPaletteTile",151    value: function _decodeRLEPaletteTile(paletteSize, tileSize) {152      var data = this._tileBuffer;153154      // palette155      var palette = this._readPixels(paletteSize);156      var offset = 0;157      while (offset < tileSize) {158        var indexInPalette = this._inflator.inflate(1)[0];159        var length = 1;160        if (indexInPalette >= 128) {161          indexInPalette -= 128;162          length = this._readRLELength();163        }164        if (indexInPalette > paletteSize) {165          throw new Error('Too big index in palette: ' + indexInPalette + ', palette size: ' + paletteSize);166        }167        if (offset + length > tileSize) {168          throw new Error('Too big rle length in palette mode: ' + length + ', allowed length is: ' + (tileSize - offset));169        }170        for (var j = 0; j < length; j++) {171          data[offset * 4] = palette[indexInPalette * 4];172          data[offset * 4 + 1] = palette[indexInPalette * 4 + 1];173          data[offset * 4 + 2] = palette[indexInPalette * 4 + 2];174          data[offset * 4 + 3] = palette[indexInPalette * 4 + 3];175          offset++;176        }177      }178      return data;179    }180  }, {181    key: "_readRLELength",182    value: function _readRLELength() {183      var length = 0;184      var current = 0;185      do {186        current = this._inflator.inflate(1)[0];187        length += current;188      } while (current === 255);189      return length + 1;190    }191  }]);192}();