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Code Issues Releases Wiki Activity

Started adding support for mid-stream AMTKVM recording.

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This commit is contained in:
Ylian Saint-Hilaire
2020-06-20 16:28:16 -07:00
parent fe12f1bfa4
commit 1fe977e512
3 changed files with 163 additions and 53 deletions
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71
amt-desktop-0.0.2.js
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@@ -75,6 +75,11 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
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 }
obj.ProcessBinaryData = function (data) {
// ###BEGIN###{DesktopRecorder}
// Record the data if needed
if ((obj.recordedData != null) && (obj.recordedHolding !== true)) { obj.recordedData.push(recordingEntry(2, 1, String.fromCharCode.apply(null, new Uint8Array(data)))); }
// ###END###{DesktopRecorder}
// Append to accumulator
if (obj.acc == null) {
obj.acc = new Uint8Array(data);
@@ -121,6 +126,10 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
obj.canvas.canvas.width = obj.rwidth = obj.width = obj.ScreenWidth = accview.getUint16(0);
obj.canvas.canvas.height = obj.rheight = obj.height = obj.ScreenHeight = accview.getUint16(2);
// ###BEGIN###{DesktopRecorder}
obj.DeskRecordServerInit = String.fromCharCode.apply(null, new Uint8Array(obj.acc.buffer.slice(0, 24 + namelen)));
// ###END###{DesktopRecorder}
// 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.
// Makes the javascript code smaller and maybe a bit faster.
/*
@@ -178,6 +187,12 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
if (obj.acc.byteLength < 4) return;
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.
cmdsize = 4;
// ###BEGIN###{DesktopRecorder}
// This is the start of a new frame, start recording now if needed.
if (obj.recordedHolding === true) { delete obj.recordedHolding; obj.recordedData.push(recordingEntry(2, 1, String.fromCharCode.apply(null, obj.acc))); }
// ###END###{DesktopRecorder}
break;
case 2: // This is the bell, do nothing.
cmdsize = 1;
@@ -889,5 +904,61 @@ var CreateAmtRemoteDesktop = function (divid, scrolldiv) {
return Position;
}
// ###BEGIN###{DesktopRecorder}
obj.StartRecording = function () {
if ((obj.recordedData != null) && (obj.DeskRecordServerInit != null)) return false;
// Take a screen shot and save it to file
var b64image = obj.CanvasId.toDataURL('image/png').split(',')[1];
// This is an ArrayBuffer, convert it to a string array
//var binary = '', bytes = new Uint8Array(fileReader.result), length = bytes.byteLength;
//for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); }
obj.recordedHolding = true;
obj.recordedData = [];
obj.recordedStart = Date.now();
obj.recordedSize = 0;
obj.recordedData.push(recordingEntry(1, 0, JSON.stringify({ magic: 'MeshCentralRelaySession', ver: 1, time: new Date().toLocaleString(), protocol: 200, bpp: obj.bpp }))); // Metadata, 200 = Midstream Intel AMT KVM
obj.recordedData.push(recordingEntry(2, 1, obj.DeskRecordServerInit));
/*
// Save a screenshot
var cmdlen = (8 + binary.length);
if (cmdlen > 65000) {
// Jumbo Packet
obj.recordedData.push(recordingEntry(2, 1, ShortToStr(27) + ShortToStr(8) + IntToStr(cmdlen) + ShortToStr(3) + ShortToStr(0) + ShortToStr(0) + ShortToStr(0) + binary));
} else {
// Normal packet
obj.recordedData.push(recordingEntry(2, 1, ShortToStr(3) + ShortToStr(cmdlen) + ShortToStr(0) + ShortToStr(0) + binary));
}
*/
return true;
}
obj.StopRecording = function () {
if (obj.recordedData == null) return;
var r = obj.recordedData;
r.push(recordingEntry(3, 0, 'MeshCentralMCREC'));
delete obj.recordedData;
delete obj.recordedStart;
delete obj.recordedSize;
return r;
}
function recordingEntry(type, flags, data) {
//console.log('recordingEntry', type, flags, (typeof data == 'number')?data:data.length);
// Header: Type (2) + Flags (2) + Size(4) + Time(8)
// Type (1 = Header, 2 = Network Data), Flags (1 = Binary, 2 = User), Size (4 bytes), Time (8 bytes)
var now = Date.now();
if (typeof data == 'number') {
obj.recordedSize += data;
return ShortToStr(type) + ShortToStr(flags) + IntToStr(data) + IntToStr(now >> 32) + IntToStr(now & 32);
} else {
obj.recordedSize += data.length;
return ShortToStr(type) + ShortToStr(flags) + IntToStr(data.length) + IntToStr(now >> 32) + IntToStr(now & 32) + data;
}
}
// ###END###{DesktopRecorder}
return obj;
}