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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core;
using Tango.Integration.Operation;
using Tango.Integration.ExternalBridge;
using Tango.MachineStudio.Common.StudioApplication;
using Tango.PMR.Diagnostics;
using System.Diagnostics;
namespace Tango.MachineStudio.Common.Diagnostics
{
/// <summary>
/// Represents the default diagnostics frame provider.
/// </summary>
/// <seealso cref="Tango.MachineStudio.Common.Diagnostics.IDiagnosticsFrameProvider" />
public class DefaultDiagnosticsFrameProvider : ExtendedObject, IDiagnosticsFrameProvider
{
private IStudioApplicationManager _application;
private Stopwatch _watch;
private List<double> _rates;
private DateTime _last_measure;
private const int _min_rate_change = 4;
private bool _disable;
/// <summary>
/// Disables the frame delivery from the current connected machine and enables the manual push frame method.
/// </summary>
public bool Disable
{
get { return _disable; }
set
{
_disable = value;
}
}
private double _frameRate;
/// <summary>
/// Gets the current diagnostics frame rate.
/// </summary>
public double FrameRate
{
get
{
return _frameRate;
}
private set
{
_frameRate = value;
RaisePropertyChangedAuto();
}
}
/// <summary>
/// Occurs when a new data frame is available.
/// </summary>
public event EventHandler<StartDiagnosticsResponse> FrameReceived;
/// <summary>
/// Initializes a new instance of the <see cref="DefaultDiagnosticsFrameProvider"/> class.
/// </summary>
/// <param name="applicationManager">The application manager.</param>
public DefaultDiagnosticsFrameProvider(IStudioApplicationManager applicationManager)
{
_rates = new List<double>();
_watch = new Stopwatch();
_application = applicationManager;
applicationManager.ConnectedMachineChanged += ApplicationManager_ConnectedMachineChanged;
}
/// <summary>
/// Applications the manager connected machine changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="machine">The machine.</param>
private void ApplicationManager_ConnectedMachineChanged(object sender, IExternalBridgeClient machine)
{
if (machine != null)
{
_last_measure = DateTime.Now;
_rates = new List<double>();
_watch = new Stopwatch();
machine.DiagnosticsDataAvailable += DefaultDiagnosticsFrameProvider_DiagnosticsDataAvailable;
}
}
/// <summary>
/// Defaults the diagnostics frame provider diagnostics data available.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="frame">The frame.</param>
private void DefaultDiagnosticsFrameProvider_DiagnosticsDataAvailable(object sender, StartDiagnosticsResponse frame)
{
if (!Disable)
{
OnFrameReceived(frame);
}
}
/// <summary>
/// Push frames manual. (Only when Disable = true)
/// </summary>
/// <param name="frame">The frame.</param>
public void PushFrame(StartDiagnosticsResponse frame)
{
if (Disable)
{
OnFrameReceived(frame);
}
}
/// <summary>
/// Raises the <see cref="FrameReceived"/> event.
/// </summary>
/// <param name="frame">The frame.</param>
protected virtual void OnFrameReceived(StartDiagnosticsResponse frame)
{
if (DateTime.Now > _last_measure.AddSeconds(1) && _rates.Count > 0)
{
_last_measure = DateTime.Now;
var rate = Math.Round(1000d / _rates.Average(), 2);
if (rate > FrameRate + _min_rate_change || rate < FrameRate - _min_rate_change)
{
FrameRate = rate;
}
_rates.Clear();
}
_rates.Add(_watch.ElapsedMilliseconds);
_watch.Restart();
FrameReceived?.Invoke(this, frame);
}
}
}
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