mirror of
https://github.com/Ylianst/MeshCentral.git
synced 2025-03-09 15:40:18 +00:00
Improved Intel AMT KVM rendering speed.
This commit is contained in:
Ylian Saint-Hilaire
parent
b42e73232f
commit
40abf105ab
2 changed files with 200 additions and 273 deletions
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@ -10,10 +10,10 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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obj.canvasid = divid;
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obj.CanvasId = Q(divid);
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obj.scrolldiv = scrolldiv;
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obj.canvas = Q(divid).getContext("2d");
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obj.canvas = Q(divid).getContext('2d');
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obj.protocol = 2; // KVM
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obj.state = 0;
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obj.acc = "";
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obj.acc = null;
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obj.ScreenWidth = 960;
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obj.ScreenHeight = 700;
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obj.width = 0;
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@ -25,8 +25,6 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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obj.showmouse = true;
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obj.buttonmask = 0;
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obj.localKeyMap = true;
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//obj.inbytes = 0;
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//obj.outbytes = 0;
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obj.spare = null;
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obj.sparew = 0;
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obj.spareh = 0;
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@ -61,9 +59,6 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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obj.inflate = ZLIB.inflateInit(-15);
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// ###END###{Inflate}
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// Private method
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obj.Debug = function (msg) { console.log(msg); }
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obj.xxStateChange = function (newstate) {
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if (newstate == 0) {
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obj.canvas.fillStyle = '#000000';
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@ -76,70 +71,78 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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}
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}
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obj.ProcessData = function (data) {
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if (!data) return;
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//obj.Debug("KRecv(" + data.length + "): " + rstr2hex(data));
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//obj.inbytes += data.length;
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//obj.Debug("KRecv(" + obj.inbytes + ")");
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obj.acc += data;
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while (obj.acc.length > 0) {
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//obj.Debug("KAcc(" + obj.acc.length + "): " + rstr2hex(obj.acc));
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var cmdsize = 0;
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if (obj.state == 0 && obj.acc.length >= 12) {
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function arrToStr(arr) { return String.fromCharCode.apply(null, arr); }
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function strToArr(str) { var arr = new Uint8Array(str.length); for (var i = 0, j = str.length; i < j; ++i) { arr[i] = str.charCodeAt(i); } return arr }
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obj.ProcessBinaryData = function (data) {
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// Append to accumulator
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if (obj.acc == null) {
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obj.acc = new Uint8Array(data);
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} else {
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var tmp = new Uint8Array(obj.acc.byteLength + data.byteLength);
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tmp.set(obj.acc, 0);
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tmp.set(new Uint8Array(data), obj.acc.byteLength);
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obj.acc = tmp;
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}
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while ((obj.acc != null) && (obj.acc.byteLength > 0)) {
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//console.log('KAcc', obj.state, obj.acc);
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var cmdsize = 0, accview = new DataView(obj.acc.buffer);
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if ((obj.state == 0) && (obj.acc.byteLength >= 12)) {
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// Getting handshake & version
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cmdsize = 12;
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//if (obj.acc.substring(0, 4) != "RFB ") { return obj.Stop(); }
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//var version = parseFloat(obj.acc.substring(4, 11));
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//obj.Debug("KVersion: " + version);
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//console.log("KVersion: " + version);
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obj.state = 1;
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obj.send("RFB 003.008\n");
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obj.send('RFB 003.008\n');
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}
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else if (obj.state == 1 && obj.acc.length >= 1) {
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else if ((obj.state == 1) && (obj.acc.byteLength >= 1)) {
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// Getting security options
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cmdsize = obj.acc.charCodeAt(0) + 1;
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cmdsize = obj.acc[0] + 1;
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obj.send(String.fromCharCode(1)); // Send the "None" security type. Since we already authenticated using redirection digest auth, we don't need to do this again.
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obj.state = 2;
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}
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else if (obj.state == 2 && obj.acc.length >= 4) {
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else if ((obj.state == 2) && (obj.acc.byteLength >= 4)) {
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// Getting security response
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cmdsize = 4;
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if (ReadInt(obj.acc, 0) != 0) { return obj.Stop(); }
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if (accview.getUint32(0) != 0) { return obj.Stop(); }
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obj.send(String.fromCharCode(1)); // Send share desktop flag
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obj.state = 3;
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}
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else if (obj.state == 3 && obj.acc.length >= 24) {
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else if ((obj.state == 3) && (obj.acc.byteLength >= 24)) {
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// Getting server init
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// ###BEGIN###{DesktopRotation}
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obj.rotation = 0; // We don't currently support screen init while rotated.
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// ###END###{DesktopRotation}
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var namelen = ReadInt(obj.acc, 20);
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if (obj.acc.length < 24 + namelen) return;
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var namelen = accview.getUint32(20);
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if (obj.acc.byteLength < 24 + namelen) return;
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cmdsize = 24 + namelen;
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obj.canvas.canvas.width = obj.rwidth = obj.width = obj.ScreenWidth = ReadShort(obj.acc, 0);
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obj.canvas.canvas.height = obj.rheight = obj.height = obj.ScreenHeight = ReadShort(obj.acc, 2);
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obj.canvas.canvas.width = obj.rwidth = obj.width = obj.ScreenWidth = accview.getUint16(0);
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obj.canvas.canvas.height = obj.rheight = obj.height = obj.ScreenHeight = accview.getUint16(2);
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// These are all values we don't really need, we are going to only run in RGB565 or RGB332 and not use the flexibility provided by these settings.
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// Makes the javascript code smaller and maybe a bit faster.
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/*
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obj.xbpp = obj.acc.charCodeAt(4);
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obj.depth = obj.acc.charCodeAt(5);
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obj.bigend = obj.acc.charCodeAt(6);
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obj.truecolor = obj.acc.charCodeAt(7);
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obj.xbpp = obj.acc[4];
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obj.depth = obj.acc[5];
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obj.bigend = obj.acc[6];
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obj.truecolor = obj.acc[7];
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obj.rmax = ReadShort(obj.acc, 8);
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obj.gmax = ReadShort(obj.acc, 10);
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obj.bmax = ReadShort(obj.acc, 12);
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obj.rsh = obj.acc.charCodeAt(14);
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obj.gsh = obj.acc.charCodeAt(15);
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obj.bsh = obj.acc.charCodeAt(16);
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obj.rsh = obj.acc[14];
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obj.gsh = obj.acc[15];
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obj.bsh = obj.acc[16];
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var name = obj.acc.substring(24, 24 + namelen);
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obj.Debug("name: " + name);
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obj.Debug("width: " + obj.width + ", height: " + obj.height);
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obj.Debug("bits-per-pixel: " + obj.xbpp);
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obj.Debug("depth: " + obj.depth);
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obj.Debug("big-endian-flag: " + obj.bigend);
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obj.Debug("true-colour-flag: " + obj.truecolor);
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obj.Debug("rgb max: " + obj.rmax + "," + obj.gmax + "," + obj.bmax);
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obj.Debug("rgb shift: " + obj.rsh + "," + obj.gsh + "," + obj.bsh);
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console.log("name: " + name);
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console.log("width: " + obj.width + ", height: " + obj.height);
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console.log("bits-per-pixel: " + obj.xbpp);
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console.log("depth: " + obj.depth);
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console.log("big-endian-flag: " + obj.bigend);
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console.log("true-colour-flag: " + obj.truecolor);
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console.log("rgb max: " + obj.rmax + "," + obj.gmax + "," + obj.bmax);
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console.log("rgb shift: " + obj.rsh + "," + obj.gsh + "," + obj.bsh);
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*/
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// SetEncodings, with AMT we can't omit RAW, must be specified.
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@ -170,36 +173,36 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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if (obj.onScreenSizeChange != null) { obj.onScreenSizeChange(obj, obj.ScreenWidth, obj.ScreenHeight); }
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}
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else if (obj.state == 4) {
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switch (obj.acc.charCodeAt(0)) {
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switch (obj.acc[0]) {
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case 0: // FramebufferUpdate
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if (obj.acc.length < 4) return;
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obj.state = 100 + ReadShort(obj.acc, 2); // Read the number of tiles that are going to be sent, add 100 and use that as our protocol state.
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if (obj.acc.byteLength < 4) return;
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obj.state = 100 + accview.getUint16(2); // Read the number of tiles that are going to be sent, add 100 and use that as our protocol state.
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cmdsize = 4;
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break;
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case 2: // This is the bell, do nothing.
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cmdsize = 1;
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break;
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case 3: // This is ServerCutText
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if (obj.acc.length < 8) return;
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var len = ReadInt(obj.acc, 4) + 8;
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if (obj.acc.length < len) return;
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cmdsize = handleServerCutText(obj.acc);
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if (obj.acc.byteLength < 8) return;
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var len = accview.getUint32(4) + 8;
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if (obj.acc.byteLength < len) return;
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cmdsize = handleServerCutText(obj.acc, accview);
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break;
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}
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}
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else if (obj.state > 100 && obj.acc.length >= 12) {
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var x = ReadShort(obj.acc, 0),
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y = ReadShort(obj.acc, 2),
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width = ReadShort(obj.acc, 4),
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height = ReadShort(obj.acc, 6),
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else if ((obj.state > 100) && (obj.acc.byteLength >= 12)) {
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var x = accview.getUint16(0),
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y = accview.getUint16(2),
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width = accview.getUint16(4),
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height = accview.getUint16(6),
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s = width * height,
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encoding = ReadInt(obj.acc, 8);
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encoding = accview.getUint32(8);
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if (encoding < 17) {
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if (width < 1 || width > 64 || height < 1 || height > 64) { console.log("Invalid tile size (" + width + "," + height + "), disconnecting."); return obj.Stop(); }
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if ((width < 1) || (width > 64) || (height < 1) || (height > 64)) { console.log("Invalid tile size (" + width + "," + height + "), disconnecting."); return obj.Stop(); }
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// Set the spare bitmap to the rigth size if it's not already. This allows us to recycle the spare most if not all the time.
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if (obj.sparew != width || obj.spareh != height) {
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// Set the spare bitmap to the right size if it's not already. This allows us to recycle the spare most if not all the time.
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if ((obj.sparew != width) || (obj.spareh != height)) {
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obj.sparew = obj.sparew2 = width;
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obj.spareh = obj.spareh2 = height;
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// ###BEGIN###{DesktopRotation}
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@ -222,51 +225,43 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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obj.send(String.fromCharCode(3, 0, 0, 0, 0, 0) + ShortToStr(obj.width) + ShortToStr(obj.height)); // FramebufferUpdateRequest
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cmdsize = 12;
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if (obj.onScreenSizeChange != null) { obj.onScreenSizeChange(obj, obj.ScreenWidth, obj.ScreenHeight); }
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// obj.Debug("New desktop width: " + obj.width + ", height: " + obj.height);
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}
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else if (encoding == 0) {
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//console.log("New desktop width: " + obj.width + ", height: " + obj.height);
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} else if (encoding == 0) {
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// RAW encoding
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var ptr = 12, cs = 12 + (s * obj.bpp);
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if (obj.acc.length < cs) return; // Check we have all the data needed and we can only draw 64x64 tiles.
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if (obj.acc.byteLength < cs) return; // Check we have all the data needed and we can only draw 64x64 tiles.
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cmdsize = cs;
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// CRITICAL LOOP, optimize this as much as possible
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if (obj.bpp == 2) {
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for (var i = 0; i < s; i++) { _setPixel16(obj.acc.charCodeAt(ptr++) + (obj.acc.charCodeAt(ptr++) << 8), i); }
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for (var i = 0; i < s; i++) { _setPixel16(accview.getUint16(ptr, true), i); ptr += 2; }
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} else {
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for (var i = 0; i < s; i++) { _setPixel8(obj.acc.charCodeAt(ptr++), i); }
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for (var i = 0; i < s; i++) { _setPixel8(obj.acc[ptr++], i); }
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}
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_putImage(obj.spare, x, y);
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}
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else if (encoding == 16) {
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} else if (encoding == 16) {
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// ZRLE encoding
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if (obj.acc.length < 16) return;
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var datalen = ReadInt(obj.acc, 12);
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if (obj.acc.length < (16 + datalen)) return;
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//obj.Debug("RECT ZRLE (" + x + "," + y + "," + width + "," + height + ") LEN = " + datalen);
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//obj.Debug("RECT ZRLE LEN: " + ReadShortX(obj.acc, 17) + ", DATA: " + rstr2hex(obj.acc.substring(16)));
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if (obj.acc.byteLength < 16) return;
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var datalen = accview.getUint32(12);
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if (obj.acc.byteLength < (16 + datalen)) return;
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// Process the ZLib header if this is the first block
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var ptr = 16, delta = 5, dx = 0;
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if (datalen > 5 && obj.acc.charCodeAt(ptr) == 0 && ReadShortX(obj.acc, ptr + 1) == (datalen - delta)) {
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if ((datalen > 5) && (obj.acc[ptr] == 0) && (accview.getUint16(ptr + 1, true) == (datalen - delta))) {
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// This is an uncompressed ZLib data block
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_decodeLRE(obj.acc, ptr + 5, x, y, width, height, s, datalen);
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}
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// ###BEGIN###{Inflate}
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else {
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// This is compressed ZLib data, decompress and process it.
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var arr = obj.inflate.inflate(obj.acc.substring(ptr, ptr + datalen - dx));
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if (arr.length > 0) { _decodeLRE(arr, 0, x, y, width, height, s, arr.length); } else { obj.Debug("Invalid deflate data"); }
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// This is compressed ZLib data, decompress and process it. (TODO: This need to be optimized, remove str/arr conversions)
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var str = obj.inflate.inflate(arrToStr(obj.acc.slice(ptr, ptr + datalen - dx)));
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if (str.length > 0) { _decodeLRE(strToArr(str), 0, x, y, width, height, s, str.length); } else { console.log("Invalid deflate data"); }
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}
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// ###END###{Inflate}
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cmdsize = 16 + datalen;
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}
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else {
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obj.Debug("Unknown Encoding: " + encoding);
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return obj.Stop();
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}
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} else { return obj.Stop(); }
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if (--obj.state == 100) {
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obj.state = 4;
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if (obj.frameRateDelay == 0) {
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@ -277,26 +272,26 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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}
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}
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//console.log('cmdsize', cmdsize);
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if (cmdsize == 0) return;
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obj.acc = obj.acc.substring(cmdsize);
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if (cmdsize != obj.acc.byteLength) { obj.acc = obj.acc.slice(cmdsize); } else { obj.acc = null; }
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}
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}
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function _decodeLRE(data, ptr, x, y, width, height, s, datalen) {
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var subencoding = data.charCodeAt(ptr++), index, v, runlengthdecode, palette = {}, rlecount = 0, runlength = 0, i;
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// obj.Debug("RECT RLE (" + (datalen - 5) + ", " + subencoding + "):" + rstr2hex(data.substring(21, 21 + (datalen - 5))));
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var subencoding = data[ptr++], index, v, runlengthdecode, palette = {}, rlecount = 0, runlength = 0, i;
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if (subencoding == 0) {
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// RAW encoding
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if (obj.bpp == 2) {
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for (i = 0; i < s; i++) { _setPixel16(data.charCodeAt(ptr++) + (data.charCodeAt(ptr++) << 8), i); }
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for (i = 0; i < s; i++) { _setPixel16(data[ptr++] + (data[ptr++] << 8), i); }
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} else {
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for (i = 0; i < s; i++) { _setPixel8(data.charCodeAt(ptr++), i); }
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for (i = 0; i < s; i++) { _setPixel8(data[ptr++], i); }
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}
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_putImage(obj.spare, x, y);
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}
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else if (subencoding == 1) {
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// Solid color tile
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v = data.charCodeAt(ptr++) + ((obj.bpp == 2) ? (data.charCodeAt(ptr++) << 8) : 0);
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v = data[ptr++] + ((obj.bpp == 2) ? (data[ptr++] << 8) : 0);
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obj.canvas.fillStyle = 'rgb(' + ((obj.bpp == 1) ? ((v & 224) + ',' + ((v & 28) << 3) + ',' + _fixColor((v & 3) << 6)) : (((v >> 8) & 248) + ',' + ((v >> 3) & 252) + ',' + ((v & 31) << 3))) + ')';
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// ###BEGIN###{DesktopRotation}
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@ -311,24 +306,24 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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// Read the palette
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var br = 4, bm = 15; // br is BitRead and bm is BitMask. By adjusting these two we can support all the variations in this encoding.
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if (obj.bpp == 2) {
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for (i = 0; i < subencoding; i++) { palette[i] = data.charCodeAt(ptr++) + (data.charCodeAt(ptr++) << 8); }
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for (i = 0; i < subencoding; i++) { palette[i] = data[ptr++] + (data[ptr++] << 8); }
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if (subencoding == 2) { br = 1; bm = 1; } else if (subencoding <= 4) { br = 2; bm = 3; } // Compute bits to read & bit mark
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while (rlecount < s && ptr < data.length) { v = data.charCodeAt(ptr++); for (i = (8 - br) ; i >= 0; i -= br) { _setPixel16(palette[(v >> i) & bm], rlecount++); } } // Display all the bits
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while (rlecount < s && ptr < data.byteLength) { v = data[ptr++]; for (i = (8 - br); i >= 0; i -= br) { _setPixel16(palette[(v >> i) & bm], rlecount++); } } // Display all the bits
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} else {
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for (i = 0; i < subencoding; i++) { palette[i] = data.charCodeAt(ptr++); }
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for (i = 0; i < subencoding; i++) { palette[i] = data[ptr++]; }
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if (subencoding == 2) { br = 1; bm = 1; } else if (subencoding <= 4) { br = 2; bm = 3; } // Compute bits to read & bit mark
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while (rlecount < s && ptr < data.length) { v = data.charCodeAt(ptr++); for (i = (8 - br) ; i >= 0; i -= br) { _setPixel8(palette[(v >> i) & bm], rlecount++); } } // Display all the bits
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while (rlecount < s && ptr < data.byteLength) { v = data[ptr++]; for (i = (8 - br) ; i >= 0; i -= br) { _setPixel8(palette[(v >> i) & bm], rlecount++); } } // Display all the bits
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}
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_putImage(obj.spare, x, y);
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}
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else if (subencoding == 128) { // RLE encoded tile
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if (obj.bpp == 2) {
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while (rlecount < s && ptr < data.length) {
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while (rlecount < s && ptr < data.byteLength) {
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// Get the run color
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v = data.charCodeAt(ptr++) + (data.charCodeAt(ptr++) << 8);
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v = data[ptr++] + (data[ptr++] << 8);
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// Decode the run length. This is the fastest and most compact way I found to do this.
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runlength = 1; do { runlength += (runlengthdecode = data.charCodeAt(ptr++)); } while (runlengthdecode == 255);
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runlength = 1; do { runlength += (runlengthdecode = data[ptr++]); } while (runlengthdecode == 255);
|
||||
|
||||
// Draw a run
|
||||
if (obj.rotation == 0) {
|
||||
|
|
@ -338,12 +333,12 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
|
|||
}
|
||||
}
|
||||
} else {
|
||||
while (rlecount < s && ptr < data.length) {
|
||||
while (rlecount < s && ptr < data.byteLength) {
|
||||
// Get the run color
|
||||
v = data.charCodeAt(ptr++);
|
||||
v = data[ptr++];
|
||||
|
||||
// Decode the run length. This is the fastest and most compact way I found to do this.
|
||||
runlength = 1; do { runlength += (runlengthdecode = data.charCodeAt(ptr++)); } while (runlengthdecode == 255);
|
||||
runlength = 1; do { runlength += (runlengthdecode = data[ptr++]); } while (runlengthdecode == 255);
|
||||
|
||||
// Draw a run
|
||||
if (obj.rotation == 0) {
|
||||
|
|
@ -358,18 +353,18 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
|
|||
else if (subencoding > 129) { // Palette RLE encoded tile
|
||||
// Read the palette
|
||||
if (obj.bpp == 2) {
|
||||
for (i = 0; i < (subencoding - 128) ; i++) { palette[i] = data.charCodeAt(ptr++) + (data.charCodeAt(ptr++) << 8); }
|
||||
for (i = 0; i < (subencoding - 128) ; i++) { palette[i] = data[ptr++] + (data[ptr++] << 8); }
|
||||
} else {
|
||||
for (i = 0; i < (subencoding - 128) ; i++) { palette[i] = data.charCodeAt(ptr++); }
|
||||
for (i = 0; i < (subencoding - 128) ; i++) { palette[i] = data[ptr++]; }
|
||||
}
|
||||
|
||||
// Decode RLE on palette
|
||||
while (rlecount < s && ptr < data.length) {
|
||||
while (rlecount < s && ptr < data.byteLength) {
|
||||
// Setup the run, get the color index and get the color from the palette.
|
||||
runlength = 1; index = data.charCodeAt(ptr++); v = palette[index % 128];
|
||||
runlength = 1; index = data[ptr++]; v = palette[index % 128];
|
||||
|
||||
// If the index starts with high order bit 1, this is a run and decode the run length.
|
||||
if (index > 127) { do { runlength += (runlengthdecode = data.charCodeAt(ptr++)); } while (runlengthdecode == 255); }
|
||||
if (index > 127) { do { runlength += (runlengthdecode = data[ptr++]); } while (runlengthdecode == 255); }
|
||||
|
||||
// Draw a run
|
||||
if (obj.rotation == 0) {
|
||||
|
|
@ -582,12 +577,9 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
|
|||
}
|
||||
|
||||
obj.Start = function () {
|
||||
//obj.Debug("KVM-Start");
|
||||
obj.state = 0;
|
||||
obj.acc = "";
|
||||
obj.acc = null;
|
||||
obj.ZRLEfirst = 1;
|
||||
//obj.inbytes = 0;
|
||||
//obj.outbytes = 0;
|
||||
// ###BEGIN###{Inflate}
|
||||
obj.inflate.inflateReset();
|
||||
// ###END###{Inflate}
|
||||
|
|
@ -599,17 +591,8 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
|
|||
for (var i in obj.sparecache) { delete obj.sparecache[i]; }
|
||||
}
|
||||
|
||||
obj.Stop = function () {
|
||||
obj.UnGrabMouseInput();
|
||||
obj.UnGrabKeyInput();
|
||||
if (obj.parent) { obj.parent.Stop(); }
|
||||
}
|
||||
|
||||
obj.send = function (x) {
|
||||
//obj.Debug("KSend(" + x.length + "): " + rstr2hex(x));
|
||||
//obj.outbytes += x.length;
|
||||
if (obj.parent) { obj.parent.send(x); }
|
||||
}
|
||||
obj.Stop = function () { obj.UnGrabMouseInput(); obj.UnGrabKeyInput(); if (obj.parent) { obj.parent.Stop(); } }
|
||||
obj.send = function (x) { if (obj.parent) { obj.parent.send(x); } }
|
||||
|
||||
var convertAmtKeyCodeTable = {
|
||||
"Pause": 19,
|
||||
|
|
@ -748,20 +731,19 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
|
|||
|
||||
obj.sendkey = function (k, d) {
|
||||
if (typeof k == 'object') {
|
||||
//for (var i in k) { obj.sendkey(k[i][0], k[i][1]); }
|
||||
var buf = ''; for (var i in k) { buf += (String.fromCharCode(4, k[i][1], 0, 0) + IntToStr(k[i][0])); } obj.send(buf);
|
||||
} else {
|
||||
obj.send(String.fromCharCode(4, d, 0, 0) + IntToStr(k));
|
||||
}
|
||||
}
|
||||
|
||||
function handleServerCutText(acc) {
|
||||
if (acc.length < 8) return 0;
|
||||
var len = ReadInt(obj.acc, 4) + 8;
|
||||
if (acc.length < len) return 0;
|
||||
function handleServerCutText(acc, accview) {
|
||||
if (acc.byteLength < 8) return 0;
|
||||
var len = accview.getUint32(4) + 8;
|
||||
if (acc.byteLength < len) return 0;
|
||||
// ###BEGIN###{DesktopInband}
|
||||
if (obj.onKvmData != null) {
|
||||
var d = acc.substring(8, len);
|
||||
var d = arrToStr(acc.slice(8, len));
|
||||
if ((d.length >= 16) && (d.substring(0, 15) == '\0KvmDataChannel')) {
|
||||
if (obj.kvmDataSupported == false) { obj.kvmDataSupported = true; console.log('KVM Data Channel Supported.'); }
|
||||
if (((obj.onKvmDataAck == -1) && (d.length == 16)) || (d.charCodeAt(15) != 0)) { obj.onKvmDataAck = true; }
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue