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/* global VNC_frame_data, VNC_frame_encoding */
import * as WebUtil from '../app/webutil.js';
import RecordingPlayer from './playback.js';
import Base64 from '../core/base64.js';
let frames = null;
function message(str) {
const cell = document.getElementById('messages');
cell.textContent += str + "\n";
cell.scrollTop = cell.scrollHeight;
}
function loadFile() {
const fname = WebUtil.getQueryVar('data', null);
if (!fname) {
return Promise.reject("Must specify data=FOO in query string.");
}
message("Loading " + fname + "...");
return new Promise((resolve, reject) => {
const script = document.createElement("script");
script.onload = resolve;
script.onerror = () => { reject("Failed to load " + fname); };
document.body.appendChild(script);
script.src = "../recordings/" + fname;
});
}
function enableUI() {
const iterations = WebUtil.getQueryVar('iterations', 3);
document.getElementById('iterations').value = iterations;
const mode = WebUtil.getQueryVar('mode', 3);
if (mode === 'realtime') {
document.getElementById('mode2').checked = true;
} else {
document.getElementById('mode1').checked = true;
}
/* eslint-disable-next-line camelcase */
message("Loaded " + VNC_frame_data.length + " frames");
const startButton = document.getElementById('startButton');
startButton.disabled = false;
startButton.addEventListener('click', start);
message("Converting...");
/* eslint-disable-next-line camelcase */
frames = VNC_frame_data;
let encoding;
/* eslint-disable camelcase */
if (window.VNC_frame_encoding) {
// Only present in older recordings
encoding = VNC_frame_encoding;
/* eslint-enable camelcase */
} else {
let frame = frames[0];
let start = frame.indexOf('{', 1) + 1;
if (frame.slice(start, start+4) === 'UkZC') {
encoding = 'base64';
} else {
encoding = 'binary';
}
}
for (let i = 0;i < frames.length;i++) {
let frame = frames[i];
if (frame === "EOF") {
frames.splice(i);
break;
}
let dataIdx = frame.indexOf('{', 1) + 1;
let time = parseInt(frame.slice(1, dataIdx - 1));
let u8;
if (encoding === 'base64') {
u8 = Base64.decode(frame.slice(dataIdx));
} else {
u8 = new Uint8Array(frame.length - dataIdx);
for (let j = 0; j < frame.length - dataIdx; j++) {
u8[j] = frame.charCodeAt(dataIdx + j);
}
}
frames[i] = { fromClient: frame[0] === '}',
timestamp: time,
data: u8 };
}
message("Ready");
}
class IterationPlayer {
constructor(iterations, frames) {
this._iterations = iterations;
this._iteration = undefined;
this._player = undefined;
this._startTime = undefined;
this._frames = frames;
this._state = 'running';
this.onfinish = () => {};
this.oniterationfinish = () => {};
this.rfbdisconnected = () => {};
}
start(realtime) {
this._iteration = 0;
this._startTime = (new Date()).getTime();
this._realtime = realtime;
this._nextIteration();
}
_nextIteration() {
const player = new RecordingPlayer(this._frames, this._disconnected.bind(this));
player.onfinish = this._iterationFinish.bind(this);
if (this._state !== 'running') { return; }
this._iteration++;
if (this._iteration > this._iterations) {
this._finish();
return;
}
player.run(this._realtime, false);
}
_finish() {
const endTime = (new Date()).getTime();
const totalDuration = endTime - this._startTime;
const evt = new CustomEvent('finish',
{ detail:
{ duration: totalDuration,
iterations: this._iterations } } );
this.onfinish(evt);
}
_iterationFinish(duration) {
const evt = new CustomEvent('iterationfinish',
{ detail:
{ duration: duration,
number: this._iteration } } );
this.oniterationfinish(evt);
this._nextIteration();
}
_disconnected(clean, frame) {
if (!clean) {
this._state = 'failed';
}
const evt = new CustomEvent('rfbdisconnected',
{ detail:
{ clean: clean,
frame: frame,
iteration: this._iteration } } );
this.onrfbdisconnected(evt);
}
}
function start() {
document.getElementById('startButton').value = "Running";
document.getElementById('startButton').disabled = true;
const iterations = document.getElementById('iterations').value;
let realtime;
if (document.getElementById('mode1').checked) {
message(`Starting performance playback (fullspeed) [${iterations} iteration(s)]`);
realtime = false;
} else {
message(`Starting realtime playback [${iterations} iteration(s)]`);
realtime = true;
}
const player = new IterationPlayer(iterations, frames);
player.oniterationfinish = (evt) => {
message(`Iteration ${evt.detail.number} took ${evt.detail.duration}ms`);
};
player.onrfbdisconnected = (evt) => {
if (!evt.detail.clean) {
message(`noVNC sent disconnected during iteration ${evt.detail.iteration} frame ${evt.detail.frame}`);
}
};
player.onfinish = (evt) => {
const iterTime = parseInt(evt.detail.duration / evt.detail.iterations, 10);
message(`${evt.detail.iterations} iterations took ${evt.detail.duration}ms (average ${iterTime}ms / iteration)`);
document.getElementById('startButton').disabled = false;
document.getElementById('startButton').value = "Start";
};
player.start(realtime);
}
loadFile().then(enableUI).catch(e => message("Error loading recording: " + e));
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