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Delete raw.js

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Nithish Anand B 2026-01-08 17:40:00 +05:30 committed by GitHub
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/*
* noVNC: HTML5 VNC client
* Copyright (C) 2019 The noVNC authors
* Licensed under MPL 2.0 (see LICENSE.txt)
*
* See README.md for usage and integration instructions.
*
*/
export default class RawDecoder {
constructor() {
this._lines = 0;
}
decodeRect(x, y, width, height, sock, display, depth, pixelFormat) {
if ((width === 0) || (height === 0)) {
return true;
}
if (this._lines === 0) {
this._lines = height;
}
const pixelSize = depth == 8 ? 1 : (depth == 16 ? 2 : 4); // Modifications
const bytesPerLine = width * pixelSize;
while (this._lines > 0) {
if (sock.rQwait("RAW", bytesPerLine)) {
return false;
}
const curY = y + (height - this._lines);
let data = sock.rQshiftBytes(bytesPerLine, false);
// Convert data if needed
if (depth == 8) {
const newdata = new Uint8Array(width * 4);
for (let i = 0; i < width; i++) {
newdata[i * 4 + 0] = ((data[i] >> 0) & 0x3) * 255 / 3;
newdata[i * 4 + 1] = ((data[i] >> 2) & 0x3) * 255 / 3;
newdata[i * 4 + 2] = ((data[i] >> 4) & 0x3) * 255 / 3;
newdata[i * 4 + 3] = 255;
}
data = newdata;
} else if (depth == 16) { // Modifications: decode 16bpp raw
const fmt = pixelFormat || {};
const redMax = fmt.redMax !== undefined ? fmt.redMax : 31;
const greenMax = fmt.greenMax !== undefined ? fmt.greenMax : 63;
const blueMax = fmt.blueMax !== undefined ? fmt.blueMax : 31;
const redShift = fmt.redShift !== undefined ? fmt.redShift : 11;
const greenShift = fmt.greenShift !== undefined ? fmt.greenShift : 5;
const blueShift = fmt.blueShift !== undefined ? fmt.blueShift : 0;
const bigEndian = !!fmt.bigEndian;
const newdata = new Uint8Array(width * 4);
for (let i = 0; i < width; i++) {
const idx = i * 2;
let pixel;
if (bigEndian) {
pixel = (data[idx] << 8) | data[idx + 1];
} else {
pixel = data[idx] | (data[idx + 1] << 8);
}
const r = (pixel >> redShift) & redMax;
const g = (pixel >> greenShift) & greenMax;
const b = (pixel >> blueShift) & blueMax;
newdata[i * 4 + 0] = redMax ? (r * 255 / redMax) : 0;
newdata[i * 4 + 1] = greenMax ? (g * 255 / greenMax) : 0;
newdata[i * 4 + 2] = blueMax ? (b * 255 / blueMax) : 0;
newdata[i * 4 + 3] = 255;
}
data = newdata;
}
// Max sure the image is fully opaque
for (let i = 0; i < width; i++) {
data[i * 4 + 3] = 255;
}
display.blitImage(x, curY, width, 1, data, 0);
this._lines--;
}
return true;
}
}