(* /*****************************************************************
  //                       Delphi-OpenCV Demo
  //               Copyright (C) 2013 Project Delphi-OpenCV
  // ****************************************************************
  // Contributor:
  // laentir Valetov
  // email:laex@bk.ru
  // ****************************************************************
  // You may retrieve the latest version of this file at the GitHub,
  // located at git://github.com/Laex/Delphi-OpenCV.git
  // ****************************************************************
  // The contents of this file are used with permission, subject to
  // the Mozilla Public License Version 1.1 (the "License"); you may
  // not use this file except in compliance with the License. You may
  // obtain a copy of the License at
  // http://www.mozilla.org/MPL/MPL-1_1Final.html
  //
  // Software distributed under the License is distributed on an
  // "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  // implied. See the License for the specific language governing
  // rights and limitations under the License.
  ******************************************************************* *)
// 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,
  highgui_c,
  core_c,
  Core.types_c;

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 выcоту 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');
    WriteLn('[i] press Space for captured image info');
    WriteLn('[i] press Esc for quit!');
    counter := 0;
    filename := AllocMem(512);

    while true do
    begin
      // получаем кадр
      frame := cvQueryFrame(capture);
      // показываем
      cvShowImage('capture', frame);
      case cvWaitKey(33) of
        13:
          begin
            // cохраняем кадр в файл
            filename := pCVChar(AnsiString(Format('Image %d.jpg'#0, [counter])));
            WriteLn('[i] capture - ', filename);
            cvSaveImage(filename, frame);
            Inc(counter);
          end;
        $20:
          begin
            WriteLn('-------- Camera info --------');
            WriteLn('FRAME_WIDTH:               ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH)));
            WriteLn('FRAME_HEIGHT:              ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT)));
            WriteLn('FPS:                       ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_FPS)));
            WriteLn('FRAME_COUNT:               ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_COUNT)));
            WriteLn('PROP_FORMAT:               ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_FORMAT)));
            WriteLn('PROP_MODE:                 ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_MODE)));
            WriteLn('PROP_BRIGHTNESS:           ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_BRIGHTNESS)));
            WriteLn('PROP_CONTRAST:             ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_CONTRAST)));
            WriteLn('PROP_SATURATION:           ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_SATURATION)));
            // WriteLn('PROP_HUE:                  ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_HUE)));
            // WriteLn('PROP_GAIN:                 ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_GAIN)));
            WriteLn('PROP_EXPOSURE:             ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_EXPOSURE)));
            WriteLn('PROP_CONVERT_RGB:          ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_CONVERT_RGB)));
            WriteLn('PROP_WHITE_BALANCE_BLUE_U: ',
              Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_WHITE_BALANCE_BLUE_U)));
            WriteLn('PROP_RECTIFICATION:        ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_RECTIFICATION)));
            // WriteLn('PROP_MONOCROME:            ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_MONOCROME)));
            WriteLn('PROP_SHARPNESS:            ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_SHARPNESS)));
            WriteLn('PROP_AUTO_EXPOSURE:        ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_AUTO_EXPOSURE)));
            // WriteLn('PROP_GAMMA:                ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_GAMMA)));
            WriteLn('PROP_TEMPERATURE:          ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_TEMPERATURE)));
            WriteLn('PROP_TRIGGER:              ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_TRIGGER)));
            WriteLn('PROP_TRIGGER_DELAY:        ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_TRIGGER_DELAY)));
            WriteLn('PROP_WHITE_BALANCE_RED_V:  ',
              Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_WHITE_BALANCE_RED_V)));
            WriteLn('PROP_ZOOM:                 ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_ZOOM)));
            // WriteLn('PROP_FOCUS:                ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_FOCUS)));
            WriteLn('PROP_GUID:                 ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_GUID)));
            WriteLn('PROP_ISO_SPEED:            ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_ISO_SPEED)));
            WriteLn('PROP_MAX_DC1394:           ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_MAX_DC1394)));
            WriteLn('PROP_BACKLIGHT:            ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_BACKLIGHT)));
            WriteLn('PROP_PAN:                  ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_PAN)));
            WriteLn('PROP_TILT:                 ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_TILT)));
            // WriteLn('PROP_ROLL:                 ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_ROLL)));
            // WriteLn('PROP_IRIS:                 ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_IRIS)));
            WriteLn('PROP_SETTINGS:             ', Trunc(cvGetCaptureProperty(capture, CV_CAP_PROP_SETTINGS)));
          end;
        27:
          Break;
      end;
    end;
    // оcвобождаем реcурcы
    cvReleaseCapture(capture);
    cvDestroyWindow('capture');
  except
    on E: Exception do
      WriteLn(E.ClassName, ': ', E.Message);
  end;

end.