vtkBkProFocusOemVideoSourceTest.cxx

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/*=Plus=header=begin======================================================
Program: Plus
Copyright (c) Laboratory for Percutaneous Surgery. All rights reserved.
See License.txt for details.
=========================================================Plus=header=end*/

#include "PlusConfigure.h"
#include "vtkCallbackCommand.h"
#include "vtkCommand.h"
#include "vtkPlusBkProFocusOemVideoSource.h"
#include "vtkImageData.h"
#include "vtkImageViewer2.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkSmartPointer.h"
#include "vtksys/CommandLineArguments.hxx"
#include "vtkPlusDataSource.h"

void PrintLogsCallback(vtkObject* obj, unsigned long eid, void* clientdata, void* calldata);

class vtkMyCallback : public vtkCommand
{
public:
  static vtkMyCallback* New()
  {return new vtkMyCallback;}
  virtual void Execute(vtkObject* caller, unsigned long, void*)
  {

    viewer->Render();

    //update the timer so it will trigger again
    iren->CreateTimer(VTKI_TIMER_UPDATE);
  }
  vtkImageViewer2* viewer;
  vtkRenderWindowInteractor* iren;
protected:
  vtkMyCallback()
  {
    viewer = NULL;
    iren = NULL;
  }
};

int main(int argc, char** argv)
{
  std::string iniFile = "BkSettings/IniFile.ini";
  double frameRate = 30;
  bool printHelp(false);
  bool renderingOff(false);

  vtksys::CommandLineArguments args;
  args.Initialize(argc, argv);

  int verboseLevel = vtkPlusLogger::LOG_LEVEL_UNDEFINED;

  args.AddArgument("--ini-file", vtksys::CommandLineArguments::EQUAL_ARGUMENT, &iniFile, "Path to the BK ini file, relative to the configuration file directory. Default: BkSettings/IniFile.ini");
  args.AddArgument("--frame-rate", vtksys::CommandLineArguments::EQUAL_ARGUMENT, &frameRate, "Requested acquisition frame rate (in FPS, default = 30)");
  args.AddArgument("--help", vtksys::CommandLineArguments::NO_ARGUMENT, &printHelp, "Print this help.");
  args.AddArgument("--rendering-off", vtksys::CommandLineArguments::NO_ARGUMENT, &renderingOff, "Run test without rendering.");
  args.AddArgument("--verbose", vtksys::CommandLineArguments::EQUAL_ARGUMENT, &verboseLevel, "Verbose level (1=error only, 2=warning, 3=info, 4=debug, 5=trace)");

  if (!args.Parse())
  {
    std::cerr << "Problem parsing arguments" << std::endl;
    std::cout << "\n\nvtkPlusBkProFocusOemVideoSource help:" << args.GetHelp() << std::endl;
    exit(EXIT_FAILURE);
  }

  vtkPlusLogger::Instance()->SetLogLevel(verboseLevel);

  if (printHelp)
  {
    std::cout << "\n\nvtkPlusBkProFocusOemVideoSource help:" << args.GetHelp() << std::endl;
    exit(EXIT_SUCCESS);
  }

  vtkSmartPointer<vtkPlusBkProFocusOemVideoSource> frameGrabber = vtkSmartPointer<vtkPlusBkProFocusOemVideoSource>::New();

  frameGrabber->SetAcquisitionRate(frameRate);

  frameGrabber->CreateDefaultOutputChannel();

  // Add an observer to warning and error events for redirecting it to the stdout
  vtkSmartPointer<vtkCallbackCommand> callbackCommand = vtkSmartPointer<vtkCallbackCommand>::New();
  callbackCommand->SetCallback(PrintLogsCallback);
  frameGrabber->AddObserver("WarningEvent", callbackCommand);
  frameGrabber->AddObserver("ErrorEvent", callbackCommand);

  LOG_INFO("Initialize...");
  frameGrabber->Connect();

  if (frameGrabber->GetConnected())
  {
    LOG_INFO("Start recording...");
    frameGrabber->StartRecording();
  }
  else
  {
    frameGrabber->Disconnect();
    LOG_ERROR("Unable to connect to IC capture device");
    exit(EXIT_FAILURE);
  }

  // If we started the viewer now then most likely the first rendering would be done using an empty frame
  // and so the image position and scaling would be off.
  // So, wait until at least a frame is acquired and only then connect the video source to the viewer.
  vtkPlusDataSource* videoSource = NULL;
  if (frameGrabber->GetFirstActiveOutputVideoSource(videoSource) != PLUS_SUCCESS)
  {
    LOG_ERROR("Unable to retrieve the video source.");
    exit(EXIT_FAILURE);
  }
  for (int retries = 0; retries < 50; retries++)
  {
    if (videoSource->GetNumberOfItems() >= 1)
    {
      // a frame has been acquired
      break;
    }
    vtkIGSIOAccurateTimer::Delay(0.1);
  }
  if (videoSource->GetNumberOfItems() < 1)
  {
    LOG_ERROR("Frames are not received from the device for several seconds");
  }

  if (renderingOff)
  {
    LOG_INFO("No need for rendering, stop the device...");
    frameGrabber->StopRecording();
    frameGrabber->Disconnect();
    LOG_INFO("Exit successfully");
    exit(EXIT_SUCCESS);
  }

  vtkSmartPointer<vtkImageViewer2> viewer = vtkSmartPointer<vtkImageViewer2>::New();

  viewer->SetColorWindow(255);
  viewer->SetColorLevel(100.5);
  viewer->SetSize(1024, 768);

  viewer->SetInputConnection(frameGrabber->GetOutputPort());

  //Create the interactor that handles the event loop
  vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
  iren->SetRenderWindow(viewer->GetRenderWindow());
  viewer->SetupInteractor(iren);

  viewer->Render();

  //establish timer event and create timer
  vtkSmartPointer<vtkMyCallback> call = vtkSmartPointer<vtkMyCallback>::New();
  call->iren = iren;
  call->viewer = viewer;
  iren->AddObserver(vtkCommand::TimerEvent, call);
  iren->CreateTimer(VTKI_TIMER_FIRST);    //VTKI_TIMER_FIRST = 0

  //iren must be initialized so that it can handle events
  iren->Initialize();
  iren->Start();

  LOG_INFO("Exit successfully");
  return EXIT_SUCCESS;

}

// Callback function for error and warning redirects
void PrintLogsCallback(vtkObject* obj, unsigned long eid, void* clientdata, void* calldata)
{
  if (eid == vtkCommand::GetEventIdFromString("WarningEvent"))
  {
    LOG_WARNING((const char*)calldata);
  }
  else if (eid == vtkCommand::GetEventIdFromString("ErrorEvent"))
  {
    LOG_ERROR((const char*)calldata);
  }
}