public async Task CaptureTest()
{
var request = new ScreenCastRequest()
{
NotifyUser = true,
RequesterName = "Batman",
ViewerID = "asdf"
};
var timeout = Debugger.IsAttached ?
20_000 :
5_000;
_ = Task.Run(async() => await _screenCaster.BeginScreenCasting(request));
await Task.Delay(timeout);
_viewer.DisconnectRequested = true;
var fps = _frameCount / (timeout / 1000);
Debug.WriteLine($"FPS: {fps}");
Debug.WriteLine($"KB Sent: {Math.Round(_bytesSent / 1024, 2)}");
Assert.IsTrue(fps > 0);
_viewer.Dispose();
}
private void ScreenCastRequested(object sender, ScreenCastRequest screenCastRequest)
{
App.Current.Dispatcher.Invoke(() =>
{
var result = MessageBox.Show($"You've received a connection request from {screenCastRequest.RequesterName}. Accept?", "Connection Request", MessageBoxButton.YesNo, MessageBoxImage.Question);
if (result == MessageBoxResult.Yes)
{
Task.Run(async() =>
{
ICapturer capturer;
try
{
if (Conductor.Viewers.Count == 0)
{
capturer = new DXCapture();
}
else
{
capturer = new BitBltCapture();
}
}
catch (Exception ex)
{
Logger.Write(ex);
capturer = new BitBltCapture();
}
await Conductor.CasterSocket.SendCursorChange(CursorIconWatcher.GetCurrentCursor(), new List <string>()
{
screenCastRequest.ViewerID
});
ScreenCaster.BeginScreenCasting(screenCastRequest.ViewerID, screenCastRequest.RequesterName, capturer, Conductor);
});
}
});
}
private static async void ScreenCastInitiated(object sender, ScreenCastRequest screenCastRequest)
{
ICapturer capturer;
try
{
if (Conductor.Viewers.Count == 0)
{
capturer = new DXCapture();
}
else
{
capturer = new BitBltCapture();
}
}
catch (Exception ex)
{
Logger.Write(ex);
capturer = new BitBltCapture();
}
await Conductor.CasterSocket.SendCursorChange(CursorIconWatcher.GetCurrentCursor(), new List <string>() { screenCastRequest.ViewerID });
ScreenCaster.BeginScreenCasting(screenCastRequest.ViewerID, screenCastRequest.RequesterName, capturer, Conductor);
BeginAudioCapture();
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
try
{
await Conductor.Current.CasterSocket.SendCursorChange(new CursorInfo(null, Point.Empty, "default"), new List <string>() { screenCastRequest.ViewerID });
_ = BeginScreenCasting(screenCastRequest.ViewerID, screenCastRequest.RequesterName, new X11Capture());
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
private static async void ScreenCastInitiated(object sender, ScreenCastRequest screenCastRequest)
{
try
{
var capturer = new X11Capture(Display);
await Conductor.OutgoingMessages.SendCursorChange(new CursorInfo(null, Point.Empty, "default"), new List <string>() { screenCastRequest.ViewerID });
ScreenCaster.BeginScreenCasting(screenCastRequest.ViewerID, screenCastRequest.RequesterName, capturer, Conductor);
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
try
{
var conductor = ServiceContainer.Instance.GetRequiredService <Conductor>();
await conductor.CasterSocket.SendCursorChange(new CursorInfo(null, Point.Empty, "default"), new List <string>() { screenCastRequest.ViewerID });
_ = BeginScreenCasting(screenCastRequest.ViewerID, screenCastRequest.RequesterName, ServiceContainer.Instance.GetRequiredService <ICapturer>());
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
if (Win32Interop.GetCurrentDesktop(out var currentDesktopName))
{
Logger.Write($"Setting desktop to {currentDesktopName} before screen casting.");
Win32Interop.SwitchToInputDesktop();
}
else
{
Logger.Write("Failed to get current desktop before screen casting.");
}
await Conductor.Current.CasterSocket.SendCursorChange(CursorIconWatcher.GetCurrentCursor(), new List <string>() { screenCastRequest.ViewerID });
_ = BeginScreenCasting(screenCastRequest.ViewerID, screenCastRequest.RequesterName, GetCapturer());
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
try
{
var sendFramesLock = new SemaphoreSlim(1, 1);
var refreshTimer = Stopwatch.StartNew();
var refreshNeeded = false;
var currentQuality = _maxQuality;
Bitmap currentFrame = null;
Bitmap previousFrame = null;
var sw = Stopwatch.StartNew();
var viewer = ServiceContainer.Instance.GetRequiredService <Viewer>();
viewer.Name = screenCastRequest.RequesterName;
viewer.ViewerConnectionID = screenCastRequest.ViewerID;
var screenBounds = viewer.Capturer.CurrentScreenBounds;
Logger.Write($"Starting screen cast. Requester: {viewer.Name}. " +
$"Viewer ID: {viewer.ViewerConnectionID}. App Mode: {_conductor.Mode}");
_conductor.Viewers.AddOrUpdate(viewer.ViewerConnectionID, viewer, (id, v) => viewer);
if (_conductor.Mode == AppMode.Normal)
{
_conductor.InvokeViewerAdded(viewer);
}
if (_conductor.Mode == AppMode.Unattended && screenCastRequest.NotifyUser)
{
_sessionIndicator.Show();
}
await viewer.SendViewerConnected();
await viewer.SendMachineName(Environment.MachineName);
await viewer.SendScreenData(
viewer.Capturer.SelectedScreen,
viewer.Capturer.GetDisplayNames().ToArray());
await viewer.SendScreenSize(screenBounds.Width, screenBounds.Height);
await viewer.SendCursorChange(_cursorIconWatcher.GetCurrentCursor());
await viewer.SendWindowsSessions();
viewer.Capturer.ScreenChanged += async(sender, bounds) =>
{
await viewer.SendScreenSize(bounds.Width, bounds.Height);
};
using (var initialFrame = viewer.Capturer.GetNextFrame())
{
if (initialFrame != null)
{
await viewer.SendScreenCapture(new CaptureFrame()
{
EncodedImageBytes = ImageUtils.EncodeJpeg(initialFrame, _maxQuality),
Left = screenBounds.Left,
Top = screenBounds.Top,
Width = screenBounds.Width,
Height = screenBounds.Height
});
}
}
if (EnvironmentHelper.IsWindows && screenCastRequest.UseWebRtc)
{
await viewer.InitializeWebRtc();
}
// Wait until the first image is received.
TaskHelper.DelayUntil(() => !viewer.PendingSentFrames.Any(), TimeSpan.MaxValue);
while (!viewer.DisconnectRequested && viewer.IsConnected)
{
try
{
TaskHelper.DelayUntil(() => sw.Elapsed.TotalMilliseconds > 40, TimeSpan.FromSeconds(5));
sw.Restart();
if (viewer.IsUsingWebRtcVideo)
{
Thread.Sleep(100);
continue;
}
if (viewer.IsStalled)
{
// Viewer isn't responding. Abort sending.
Logger.Write("Viewer stalled. Ending send loop.");
break;
}
viewer.ThrottleIfNeeded();
if (currentFrame != null)
{
previousFrame?.Dispose();
previousFrame = (Bitmap)currentFrame.Clone();
}
currentFrame?.Dispose();
currentFrame = viewer.Capturer.GetNextFrame();
if (currentFrame is null)
{
continue;
}
if (refreshTimer.Elapsed.TotalSeconds > 10 ||
refreshNeeded && refreshTimer.Elapsed.TotalSeconds > 5)
{
viewer.Capturer.CaptureFullscreen = true;
}
var diffArea = ImageUtils.GetDiffArea(currentFrame, previousFrame, viewer.Capturer.CaptureFullscreen);
if (diffArea.IsEmpty)
{
continue;
}
if (viewer.Capturer.CaptureFullscreen)
{
refreshTimer.Restart();
refreshNeeded = false;
}
byte[] encodedImageBytes;
if (viewer.Capturer.CaptureFullscreen)
{
// Recalculate Bps.
viewer.AverageBytesPerSecond = 0;
encodedImageBytes = ImageUtils.EncodeJpeg(currentFrame, _maxQuality);
}
else
{
if (viewer.AverageBytesPerSecond > 0)
{
var expectedSize = diffArea.Height * diffArea.Width * 4 * .1;
var timeToSend = expectedSize / viewer.AverageBytesPerSecond;
currentQuality = Math.Max(_minQuality, Math.Min(_maxQuality, (int)(.1 / timeToSend * _maxQuality)));
if (currentQuality < _maxQuality - 10)
{
refreshNeeded = true;
Debug.WriteLine($"Quality Reduced: {currentQuality}");
}
}
using var clone = currentFrame.Clone(diffArea, currentFrame.PixelFormat);
//var resizeW = diffArea.Width * currentQuality / _maxQuality;
//var resizeH = diffArea.Height * currentQuality / _maxQuality;
//using var resized = new Bitmap(clone, new Size(resizeW, resizeH));
encodedImageBytes = ImageUtils.EncodeJpeg(clone, currentQuality);
}
viewer.Capturer.CaptureFullscreen = false;
await sendFramesLock.WaitAsync();
SendFrame(encodedImageBytes, diffArea, viewer, sendFramesLock);
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
Logger.Write($"Ended screen cast. " +
$"Requester: {viewer.Name}. " +
$"Viewer ID: {viewer.ViewerConnectionID}. " +
$"Viewer WS Connected: {viewer.IsConnected}. " +
$"Viewer Stalled: {viewer.IsStalled}. " +
$"Viewer Disconnected Requested: {viewer.DisconnectRequested}");
_conductor.Viewers.TryRemove(viewer.ViewerConnectionID, out _);
viewer.Dispose();
}
catch (Exception ex)
{
Logger.Write(ex);
}
finally
{
// Close if no one is viewing.
if (_conductor.Viewers.IsEmpty && _conductor.Mode == AppMode.Unattended)
{
Logger.Write("No more viewers. Calling shutdown service.");
await _shutdownService.Shutdown();
}
}
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
try
{
var sendFramesLock = new SemaphoreSlim(1, 1);
Bitmap currentFrame = null;
Bitmap previousFrame = null;
var fpsQueue = new Queue <DateTimeOffset>();
var viewer = ServiceContainer.Instance.GetRequiredService <Viewer>();
viewer.Name = screenCastRequest.RequesterName;
viewer.ViewerConnectionID = screenCastRequest.ViewerID;
Logger.Write($"Starting screen cast. Requester: {viewer.Name}. " +
$"Viewer ID: {viewer.ViewerConnectionID}. App Mode: {_conductor.Mode}");
_conductor.Viewers.AddOrUpdate(viewer.ViewerConnectionID, viewer, (id, v) => viewer);
if (_conductor.Mode == AppMode.Normal)
{
_conductor.InvokeViewerAdded(viewer);
}
if (_conductor.Mode == AppMode.Unattended && screenCastRequest.NotifyUser)
{
_sessionIndicator.Show();
}
await viewer.SendViewerConnected();
await viewer.SendMachineName(Environment.MachineName);
await viewer.SendScreenData(
viewer.Capturer.SelectedScreen,
viewer.Capturer.GetDisplayNames().ToArray());
await viewer.SendScreenSize(viewer.Capturer.CurrentScreenBounds.Width,
viewer.Capturer.CurrentScreenBounds.Height);
await viewer.SendCursorChange(_cursorIconWatcher.GetCurrentCursor());
await viewer.SendWindowsSessions();
viewer.Capturer.ScreenChanged += async(sender, bounds) =>
{
await viewer.SendScreenSize(bounds.Width, bounds.Height);
};
using (var initialFrame = viewer.Capturer.GetNextFrame())
{
if (initialFrame != null)
{
await viewer.SendScreenCapture(new CaptureFrame[]
{
new CaptureFrame()
{
EncodedImageBytes = ImageUtils.EncodeBitmap(initialFrame, viewer.EncoderParams),
Left = viewer.Capturer.CurrentScreenBounds.Left,
Top = viewer.Capturer.CurrentScreenBounds.Top,
Width = viewer.Capturer.CurrentScreenBounds.Width,
Height = viewer.Capturer.CurrentScreenBounds.Height
}
});
}
}
if (EnvironmentHelper.IsWindows)
{
await viewer.InitializeWebRtc();
}
// Wait until the first image is received.
TaskHelper.DelayUntil(() => !viewer.PendingSentFrames.Any(), TimeSpan.MaxValue);
while (!viewer.DisconnectRequested && viewer.IsConnected)
{
try
{
if (viewer.IsUsingWebRtcVideo)
{
Thread.Sleep(100);
continue;
}
if (viewer.IsStalled)
{
// Viewer isn't responding. Abort sending.
break;
}
if (EnvironmentHelper.IsDebug)
{
while (fpsQueue.Any() && DateTimeOffset.Now - fpsQueue.Peek() > TimeSpan.FromSeconds(1))
{
fpsQueue.Dequeue();
}
fpsQueue.Enqueue(DateTimeOffset.Now);
Debug.WriteLine($"Capture FPS: {fpsQueue.Count}");
}
viewer.ThrottleIfNeeded();
if (currentFrame != null)
{
previousFrame?.Dispose();
previousFrame = (Bitmap)currentFrame.Clone();
}
currentFrame?.Dispose();
currentFrame = viewer.Capturer.GetNextFrame();
var diffAreas = ImageUtils.GetDiffAreas(currentFrame, previousFrame, viewer.Capturer.CaptureFullscreen);
if (!diffAreas.Any())
{
continue;
}
viewer.Capturer.CaptureFullscreen = false;
var frameClone = (Bitmap)currentFrame.Clone();
Debug.WriteLine($"Sending {diffAreas.Count} frames.");
await sendFramesLock.WaitAsync();
SendFrames(frameClone, diffAreas, viewer, sendFramesLock);
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
Logger.Write($"Ended screen cast. Requester: {viewer.Name}. Viewer ID: {viewer.ViewerConnectionID}.");
_conductor.Viewers.TryRemove(viewer.ViewerConnectionID, out _);
viewer.Dispose();
}
catch (Exception ex)
{
Logger.Write(ex);
}
finally
{
// Close if no one is viewing.
if (_conductor.Viewers.IsEmpty && _conductor.Mode == AppMode.Unattended)
{
Logger.Write("No more viewers. Calling shutdown service.");
await _shutdownService.Shutdown();
}
}
}
public void InvokeScreenCastRequested(ScreenCastRequest viewerIdAndRequesterName)
{
ScreenCastRequested?.Invoke(null, viewerIdAndRequesterName);
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
var viewers = new ConcurrentDictionary <string, Viewer>();
var mode = AppMode.Unattended;
try
{
byte[] encodedImageBytes;
var fpsQueue = new Queue <DateTimeOffset>();
mode = Conductor.Mode;
var viewer = ServiceContainer.Instance.GetRequiredService <Viewer>();
viewer.Name = screenCastRequest.RequesterName;
viewer.ViewerConnectionID = screenCastRequest.ViewerID;
viewers = Conductor.Viewers;
Logger.Write($"Starting screen cast. Requester: {viewer.Name}. Viewer ID: {viewer.ViewerConnectionID}. App Mode: {mode}");
viewers.AddOrUpdate(viewer.ViewerConnectionID, viewer, (id, v) => viewer);
if (mode == AppMode.Normal)
{
Conductor.InvokeViewerAdded(viewer);
}
if (EnvironmentHelper.IsWindows)
{
Win32Interop.SwitchToInputDesktop();
await viewer.InitializeWebRtc();
}
await viewer.SendMachineName(Environment.MachineName, viewer.ViewerConnectionID);
await viewer.SendScreenData(
viewer.Capturer.SelectedScreen,
viewer.Capturer.GetDisplayNames().ToArray(),
viewer.ViewerConnectionID);
await viewer.SendScreenSize(viewer.Capturer.CurrentScreenBounds.Width,
viewer.Capturer.CurrentScreenBounds.Height,
viewer.ViewerConnectionID);
await viewer.SendCursorChange(CursorIconWatcher.GetCurrentCursor());
viewer.Capturer.ScreenChanged += async(sender, bounds) =>
{
await viewer.SendScreenSize(bounds.Width, bounds.Height, viewer.ViewerConnectionID);
};
await viewer.SendScreenCapture(
ImageUtils.EncodeBitmap(viewer.Capturer.CurrentFrame, viewer.EncoderParams),
viewer.ViewerConnectionID,
viewer.Capturer.CurrentScreenBounds.Left,
viewer.Capturer.CurrentScreenBounds.Top,
viewer.Capturer.CurrentScreenBounds.Width,
viewer.Capturer.CurrentScreenBounds.Height);
while (!viewer.DisconnectRequested && viewer.IsConnected)
{
try
{
if (viewer.IsStalled())
{
// Viewer isn't responding. Abort sending.
break;
}
if (EnvironmentHelper.IsDebug)
{
while (fpsQueue.Any() && DateTimeOffset.Now - fpsQueue.Peek() > TimeSpan.FromSeconds(1))
{
fpsQueue.Dequeue();
}
fpsQueue.Enqueue(DateTimeOffset.Now);
Debug.WriteLine($"Capture FPS: {fpsQueue.Count}");
}
await viewer.ThrottleIfNeeded();
viewer.Capturer.GetNextFrame();
var diffArea = ImageUtils.GetDiffArea(viewer.Capturer.CurrentFrame, viewer.Capturer.PreviousFrame, viewer.Capturer.CaptureFullscreen);
if (diffArea.IsEmpty)
{
continue;
}
using (var newImage = viewer.Capturer.CurrentFrame.Clone(diffArea, PixelFormat.Format32bppArgb))
{
if (viewer.Capturer.CaptureFullscreen)
{
viewer.Capturer.CaptureFullscreen = false;
}
encodedImageBytes = ImageUtils.EncodeBitmap(newImage, viewer.EncoderParams);
if (encodedImageBytes?.Length > 0)
{
await viewer.SendScreenCapture(encodedImageBytes, viewer.ViewerConnectionID, diffArea.Left, diffArea.Top, diffArea.Width, diffArea.Height);
}
}
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
Logger.Write($"Ended screen cast. Requester: {viewer.Name}. Viewer ID: {viewer.ViewerConnectionID}.");
viewers.TryRemove(viewer.ViewerConnectionID, out _);
viewer.Dispose();
}
catch (Exception ex)
{
Logger.Write(ex);
}
finally
{
// Close if no one is viewing.
if (viewers.Count == 0 && mode == AppMode.Unattended)
{
Logger.Debug($"Exiting process ID {Process.GetCurrentProcess().Id}.");
Environment.Exit(0);
}
}
}
internal void InvokeScreenCastInitiated(ScreenCastRequest viewerIdAndRequesterName)
{
ScreenCastInitiated?.Invoke(null, viewerIdAndRequesterName);
}
private async Task CastScreen(ScreenCastRequest screenCastRequest)
{
try
{
Bitmap currentFrame = null;
Bitmap previousFrame = null;
long sequence = 0;
var viewer = ServiceContainer.Instance.GetRequiredService <Viewer>();
viewer.Name = screenCastRequest.RequesterName;
viewer.ViewerConnectionID = screenCastRequest.ViewerID;
var screenBounds = viewer.Capturer.CurrentScreenBounds;
Logger.Write($"Starting screen cast. Requester: {viewer.Name}. " +
$"Viewer ID: {viewer.ViewerConnectionID}. App Mode: {_conductor.Mode}");
_conductor.Viewers.AddOrUpdate(viewer.ViewerConnectionID, viewer, (id, v) => viewer);
if (_conductor.Mode == AppMode.Normal)
{
_conductor.InvokeViewerAdded(viewer);
}
if (_conductor.Mode == AppMode.Unattended && screenCastRequest.NotifyUser)
{
_sessionIndicator.Show();
}
await viewer.SendViewerConnected();
await viewer.SendScreenData(
viewer.Capturer.SelectedScreen,
viewer.Capturer.GetDisplayNames(),
screenBounds.Width,
screenBounds.Height);
await viewer.SendScreenSize(screenBounds.Width, screenBounds.Height);
await viewer.SendCursorChange(_cursorIconWatcher.GetCurrentCursor());
await viewer.SendWindowsSessions();
viewer.Capturer.ScreenChanged += async(sender, bounds) =>
{
await viewer.SendScreenSize(bounds.Width, bounds.Height);
};
using (var initialFrame = viewer.Capturer.GetNextFrame())
{
if (initialFrame != null)
{
await viewer.SendScreenCapture(new CaptureFrame()
{
EncodedImageBytes = ImageUtils.EncodeJpeg(initialFrame),
Left = screenBounds.Left,
Top = screenBounds.Top,
Width = screenBounds.Width,
Height = screenBounds.Height,
Sequence = sequence++
});
}
}
if (EnvironmentHelper.IsWindows && screenCastRequest.UseWebRtc)
{
await viewer.InitializeWebRtc();
}
// Wait until the first image is received.
if (!TaskHelper.DelayUntil(() => !viewer.PendingSentFrames.Any(), TimeSpan.FromSeconds(30)))
{
Logger.Write("Timed out while waiting for first frame receipt.");
_conductor.Viewers.TryRemove(viewer.ViewerConnectionID, out _);
viewer.Dispose();
return;
}
while (!viewer.DisconnectRequested && viewer.IsConnected)
{
try
{
if (viewer.IsUsingWebRtcVideo)
{
Thread.Sleep(100);
continue;
}
if (viewer.IsStalled)
{
// Viewer isn't responding. Abort sending.
Logger.Write("Viewer stalled. Ending send loop.");
break;
}
viewer.CalculateFps();
viewer.ApplyAutoQuality();
if (currentFrame != null)
{
previousFrame?.Dispose();
previousFrame = (Bitmap)currentFrame.Clone();
}
currentFrame?.Dispose();
currentFrame = viewer.Capturer.GetNextFrame();
if (currentFrame is null)
{
continue;
}
var diffArea = ImageUtils.GetDiffArea(currentFrame, previousFrame, viewer.Capturer.CaptureFullscreen);
if (diffArea.IsEmpty)
{
continue;
}
viewer.Capturer.CaptureFullscreen = false;
using var croppedFrame = currentFrame.Clone(diffArea, currentFrame.PixelFormat);
byte[] encodedImageBytes;
if (viewer.ImageQuality == Viewer.DefaultQuality)
{
encodedImageBytes = ImageUtils.EncodeJpeg(croppedFrame);
}
else
{
encodedImageBytes = ImageUtils.EncodeJpeg(croppedFrame, viewer.ImageQuality);
}
await SendFrame(encodedImageBytes, diffArea, sequence ++, viewer);
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
Logger.Write($"Ended screen cast. " +
$"Requester: {viewer.Name}. " +
$"Viewer ID: {viewer.ViewerConnectionID}. " +
$"Viewer WS Connected: {viewer.IsConnected}. " +
$"Viewer Stalled: {viewer.IsStalled}. " +
$"Viewer Disconnected Requested: {viewer.DisconnectRequested}");
_conductor.Viewers.TryRemove(viewer.ViewerConnectionID, out _);
viewer.Dispose();
}
catch (Exception ex)
{
Logger.Write(ex);
}
finally
{
// Close if no one is viewing.
if (_conductor.Viewers.IsEmpty && _conductor.Mode == AppMode.Unattended)
{
Logger.Write("No more viewers. Calling shutdown service.");
await _shutdownService.Shutdown();
}
}
}
public void BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
_ = Task.Run(async() => await CastScreen(screenCastRequest));
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
var mode = AppMode.Unattended;
try
{
Bitmap currentFrame = null;
Bitmap previousFrame = null;
byte[] encodedImageBytes;
var fpsQueue = new Queue <DateTimeOffset>();
mode = Conductor.Mode;
var viewer = ServiceContainer.Instance.GetRequiredService <Viewer>();
viewer.Name = screenCastRequest.RequesterName;
viewer.ViewerConnectionID = screenCastRequest.ViewerID;
Logger.Write($"Starting screen cast. Requester: {viewer.Name}. Viewer ID: {viewer.ViewerConnectionID}. App Mode: {mode}");
Conductor.Viewers.AddOrUpdate(viewer.ViewerConnectionID, viewer, (id, v) => viewer);
if (mode == AppMode.Normal)
{
Conductor.InvokeViewerAdded(viewer);
}
if (mode == AppMode.Unattended && screenCastRequest.NotifyUser)
{
SessionIndicator.Show();
}
await viewer.SendViewerConnected();
await viewer.SendMachineName(Environment.MachineName);
await viewer.SendScreenData(
viewer.Capturer.SelectedScreen,
viewer.Capturer.GetDisplayNames().ToArray());
await viewer.SendScreenSize(viewer.Capturer.CurrentScreenBounds.Width,
viewer.Capturer.CurrentScreenBounds.Height);
await viewer.SendCursorChange(CursorIconWatcher.GetCurrentCursor());
await viewer.SendWindowsSessions();
viewer.Capturer.ScreenChanged += async(sender, bounds) =>
{
await viewer.SendScreenSize(bounds.Width, bounds.Height);
};
using (var initialFrame = viewer.Capturer.GetNextFrame())
{
await viewer.SendScreenCapture(
ImageUtils.EncodeBitmap(initialFrame, viewer.EncoderParams),
viewer.Capturer.CurrentScreenBounds.Left,
viewer.Capturer.CurrentScreenBounds.Top,
viewer.Capturer.CurrentScreenBounds.Width,
viewer.Capturer.CurrentScreenBounds.Height);
}
if (EnvironmentHelper.IsWindows)
{
await viewer.InitializeWebRtc();
}
while (!viewer.DisconnectRequested && viewer.IsConnected)
{
try
{
if (viewer.IsUsingWebRtcVideo)
{
Thread.Sleep(100);
continue;
}
if (viewer.IsStalled)
{
// Viewer isn't responding. Abort sending.
break;
}
if (EnvironmentHelper.IsDebug)
{
while (fpsQueue.Any() && DateTimeOffset.Now - fpsQueue.Peek() > TimeSpan.FromSeconds(1))
{
fpsQueue.Dequeue();
}
fpsQueue.Enqueue(DateTimeOffset.Now);
Debug.WriteLine($"Capture FPS: {fpsQueue.Count}");
}
viewer.ThrottleIfNeeded();
if (currentFrame != null)
{
previousFrame?.Dispose();
previousFrame = (Bitmap)currentFrame.Clone();
}
currentFrame?.Dispose();
currentFrame = viewer.Capturer.GetNextFrame();
var diffAreas = ImageUtils.GetDiffAreas(currentFrame, previousFrame, viewer.Capturer.CaptureFullscreen);
if (diffAreas.Count == 0)
{
continue;
}
foreach (var diffArea in diffAreas)
{
using var newImage = currentFrame.Clone(diffArea, PixelFormat.Format32bppArgb);
if (viewer.Capturer.CaptureFullscreen)
{
viewer.Capturer.CaptureFullscreen = false;
}
encodedImageBytes = ImageUtils.EncodeBitmap(newImage, viewer.EncoderParams);
if (encodedImageBytes?.Length > 0)
{
await viewer.SendScreenCapture(encodedImageBytes, diffArea.Left, diffArea.Top, diffArea.Width, diffArea.Height);
}
}
}
catch (Exception ex)
{
Logger.Write(ex);
}
}
Logger.Write($"Ended screen cast. Requester: {viewer.Name}. Viewer ID: {viewer.ViewerConnectionID}.");
Conductor.Viewers.TryRemove(viewer.ViewerConnectionID, out _);
viewer.Dispose();
}
catch (Exception ex)
{
Logger.Write(ex);
}
finally
{
// Close if no one is viewing.
if (Conductor.Viewers.Count == 0 && mode == AppMode.Unattended)
{
await ShutdownService.Shutdown();
}
}
}
public async Task BeginScreenCasting(ScreenCastRequest screenCastRequest)
{
await Conductor.Current.CasterSocket.SendCursorChange(CursorIconWatcher.GetCurrentCursor(), new List <string>() { screenCastRequest.ViewerID });
_ = BeginScreenCasting(screenCastRequest.ViewerID, screenCastRequest.RequesterName, GetCapturer());
}
