// JCL_DEBUG_EXPERT_GENERATEJDBG OFF
// JCL_DEBUG_EXPERT_INSERTJDBG OFF
// JCL_DEBUG_EXPERT_DELETEMAPFILE OFF
program cv_CreateCameraCapture;

{$APPTYPE CONSOLE}
{$R *.res}

uses
  System.SysUtils,
{$I ..\..\uses_include.inc}
  ;

Var
  capture: PCvCapture;
  width: Double;
  height: Double;
  frame: PIplImage;
  counter: Integer;
  filename: pCVChar;
  c: Integer;

begin
  try
    // получаем любую подключённую камеру
    capture := cvCreateCameraCapture(CV_CAP_ANY);
    if not Assigned(capture) then
      Halt;
    // узнаем ширину и высоту кадра
    width := cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH);
    height := cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT);
    WriteLn(Format('[i] %.0f x %.0f', [width, height]));
    frame := Nil;
    cvNamedWindow('capture', CV_WINDOW_AUTOSIZE);
    WriteLn('[i] press Enter for capture image and Esc for quit!');
    counter := 0;
    filename := AllocMem(512);

    while true do
    begin
      // получаем кадр
      frame := cvQueryFrame(capture);
      // показываем
      cvShowImage('capture', frame);
      c := cvWaitKey(33);
      if (c = 27) then
        Break
      else if (c = 13) then
      begin
        // сохраняем кадр в файл
        filename := PCVChar(AnsiString(Format('Image %d.jpg'#0, [counter])));
        WriteLn('[i] capture - ', filename);
        cvSaveImage(filename, frame);
        Inc(counter);
      end;
    end;
    // освобождаем ресурсы
    cvReleaseCapture(capture);
    cvDestroyWindow('capture');
  except
    on E: Exception do
      WriteLn(E.ClassName, ': ', E.Message);
  end;

end.