Delphi-OpenCV/include/highgui/highgui.pas

// --------------------------------- OpenCV license.txt ---------------------------
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  //                             License Agreement
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(* /  **************************************************************************************************
  //                                 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
  //  **************************************************************************************************
  //  License:
  //  The contents of this file are 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/
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  //  **************************************************************************************************
  //  Warning: Using Delphi XE3 syntax!
  //  **************************************************************************************************
  //  The Initial Developer of the Original Code:
  //  OpenCV: open source computer vision library
  //  Homepage:    http://opencv.org
  //  Online docs: http://docs.opencv.org
  //  Q&A forum:   http://answers.opencv.org
  //  Dev zone:    http://code.opencv.org
  //  **************************************************************************************************
  //  Original file:
  //  opencv\modules\highgui\include\opencv2\highgui.hpp
  //  ************************************************************************************************* *)

unit highgui;

interface

Uses WinApi.Windows, Mat, Core.types_c, highgui_c;

Type

  // Attention!
  // The sequence of function declarations interface must match the
  // sequence of function declarations in the project "opencv_classes" (C++)

  IVideoCapture = interface
    ['{3F605CF0-ECAC-4230-B30B-AF9BFD516C4F}']
    function open(device: Integer): bool; overload; stdcall;
    function openfilename(filename: pAnsiChar): bool; overload; stdcall;
    function isOpened(): bool; stdcall;
    procedure release(); stdcall;

    function grab(): bool; stdcall;
    function retrieve(Var image: IMat; flag: Integer): bool; stdcall;
    function read(Var image: IMat): bool; stdcall;

    function setValue(propId: Integer; value: double): bool; stdcall;
    function getValue(propId: Integer): double; stdcall;
  end;

function CreateVideoCapture: IVideoCapture; overload; safecall;
function CreateVideoCapture(device: Integer): IVideoCapture; overload; safecall;
function CreateVideoCapture(filename: pAnsiChar): IVideoCapture; overload; safecall;

// Flags for namedWindow
Const
  WINDOW_NORMAL = $00000000;
  // the user can resize the window (no constraint) / also use to switch a fullscreen window to a normal size
  WINDOW_AUTOSIZE = $00000001; // the user cannot resize the window, the size is constrainted by the image displayed
  WINDOW_OPENGL = $00001000; // window with opengl support

  WINDOW_FULLSCREEN = 1; // change the window to fullscreen
  WINDOW_FREERATIO = $00000100; // the image expends as much as it can (no ratio constraint)
  WINDOW_KEEPRATIO = $00000000; // the ratio of the image is respected

  // CV_EXPORTS_W void namedWindow(const String& winname, int flags = WINDOW_AUTOSIZE);
procedure namedWindow(const winname: String; const flags: Integer = WINDOW_AUTOSIZE);
// CV_EXPORTS_W void destroyWindow(const String& winname);
procedure destroyWindow(const winname: String);
// CV_EXPORTS_W void destroyAllWindows();
procedure destroyAllWindows();
// CV_EXPORTS_W int startWindowThread();
function startWindowThread(): Integer;
// CV_EXPORTS_W int waitKey(int delay = 0);
function waitKey(const delay: Integer = 0): Integer;
// CV_EXPORTS_W void imshow(const String& winname, InputArray mat);
procedure imshow(const winname: String; const Mat: IMat);
// CV_EXPORTS_W void resizeWindow(const String& winname, int width, int height);
procedure resizeWindow(const winname: String; const width, height: Integer);
// CV_EXPORTS_W void moveWindow(const String& winname, int x, int y);
procedure moveWindow(const winname: String; const x, y: Integer);
// CV_EXPORTS_W void setWindowProperty(const String& winname, int prop_id, double prop_value);
procedure setWindowProperty(const winname: String; const prop_id: Integer; const prop_value: double);
// CV_EXPORTS_W double getWindowProperty(const String& winname, int prop_id);
function getWindowProperty(const winname: String; const prop_id: Integer): double;
// CV_EXPORTS int createTrackbar(const String& trackbarname, const String& winname,
// int* value, int count,
// TrackbarCallback onChange = 0,
// void* userdata = 0);
function createTrackbar(const trackbarname: String; const winname: String; value: PInteger; count: Integer;
  onChange: CvTrackbarCallback2 = nil; userdata: Pointer = nil): Integer;

implementation

Uses uLibName, cvUtils, core_c;

function CreateVideoCapture: IVideoCapture; external OpenCV_Classes_DLL name 'CreateVideoCapture';
function CreateVideoCapture(device: Integer): IVideoCapture; external OpenCV_Classes_DLL name 'CreateVideoCapture_dvc';
function CreateVideoCapture(filename: pAnsiChar): IVideoCapture;
  external OpenCV_Classes_DLL name 'CreateVideoCapture_fln';

procedure namedWindow(const winname: String; const flags: Integer = WINDOW_AUTOSIZE);
begin
  cvNamedWindow(c_str(winname), flags);
end;

procedure destroyWindow(const winname: String);
begin
  cvDestroyWindow(c_str(winname));
end;

procedure destroyAllWindows();
begin
  cvDestroyAllWindows();
end;

function startWindowThread(): Integer;
begin
  Result := cvStartWindowThread();
end;

function waitKey(const delay: Integer = 0): Integer;
begin
  Result := cvWaitKey(delay);
end;

procedure imshow(const winname: String; const Mat: IMat);
Var
  IplImage: TIplImage;
begin
  IplImage._IplImage(Pointer(Mat));
  cvShowImage(c_str(winname), @IplImage);
end;

procedure resizeWindow(const winname: String; const width, height: Integer);
begin
  cvResizeWindow(c_str(winname), width, height);
end;

procedure moveWindow(const winname: String; const x, y: Integer);
begin
  cvMoveWindow(c_str(winname), x, y);
end;

procedure setWindowProperty(const winname: String; const prop_id: Integer; const prop_value: double);
begin
  cvSetWindowProperty(c_str(winname), prop_id, prop_value);
end;

function getWindowProperty(const winname: String; const prop_id: Integer): double;
begin
  Result := cvGetWindowProperty(c_str(winname), prop_id);
end;

function createTrackbar(const trackbarname: String; const winname: String; value: PInteger; count: Integer;
  onChange: CvTrackbarCallback2 = nil; userdata: Pointer = nil): Integer;
begin
  Result := cvCreateTrackbar2(c_str(trackbarname), c_str(winname), value, count, onChange, userdata);
end;

end.