(* /***************************************************************** // 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. ********************************************************************) unit uOCVCamera; interface uses System.SysUtils, System.Classes, core.types_c, highgui_c, uOCVTypes; type TocvCameraCaptureSource = // (CAP_ANY {= 0} , // autodetect CAP_CAM_0 {=0} , // CAP_CAM_1 {=1} , // CAP_CAM_2 {=2} , // CAP_CAM_3 {=3} , // CAP_CAM_4 {=4} , // CAP_CAM_5 {=5} , // CAP_MIL {= 100} , // MIL proprietary drivers CAP_VFW {= 200} , // platform native CAP_V4L {= 200} , // CAP_V4L2 {= 200} , // CAP_FIREWARE {= 300} , // IEEE 1394 drivers CAP_FIREWIRE {= 300} , // CAP_IEEE1394 {= 300} , // CAP_DC1394 {= 300} , // CAP_CMU1394 {= 300} , // CAP_STEREO {= 400} , // TYZX proprietary drivers CAP_TYZX {= 400} , // TYZX_LEFT {= 400} , // TYZX_RIGHT {= 401} , // TYZX_COLOR {= 402} , // TYZX_Z {= 403} , // CAP_QT {= 500} , // QuickTime CAP_UNICAP {= 600} , // Unicap drivers CAP_DSHOW {= 700} , // DirectShow (via videoInput) CAP_PVAPI {= 800} , // PvAPI, Prosilica GigE SDK CAP_OPENNI {= 900} , // OpenNI (for Kinect) CAP_OPENNI_ASUS {= 910} , // OpenNI (for Asus Xtion) CAP_ANDROID {= 1000} , // Android CAP_XIAPI {= 1100} , // XIMEA Camera API CAP_AVFOUNDATION {= 1200} ); type TocvCameraThread = class(TThread) private const ThreadSleepConst = 10; private FOnNotifyData: TOnOcvNotify; protected FCapture: pCvCapture; procedure Execute; override; public property OnNotifyData: TOnOcvNotify Read FOnNotifyData write FOnNotifyData; end; TocvResolution = (r160x120, r320x240, r424x240, r640x360, r800x448, r960x544, r1280x720); TocvCamera = class(TocvDataSource) private FEnabled: Boolean; FCameraCaptureSource: TocvCameraCaptureSource; FResolution: TocvResolution; FOnImage: TOnOcvNotify; procedure SetEnabled(const Value: Boolean); procedure SetCameraCaptureSource(const Value: TocvCameraCaptureSource); procedure setResolution(const Value: TocvResolution); procedure TerminateCameraThread; procedure ReleaseCamera; procedure SetCameraResolution; protected FCapture: pCvCapture; FOpenCVCameraThread: TocvCameraThread; procedure OnNotifyData(Sender: TObject; const IplImage: IocvImage); public constructor Create(AOwner: TComponent); override; destructor Destroy; override; published property Enabled: Boolean Read FEnabled write SetEnabled default False; property CameraCaptureSource: TocvCameraCaptureSource read FCameraCaptureSource write SetCameraCaptureSource default CAP_ANY; property Resolution: TocvResolution read FResolution write setResolution; property OnImage: TOnOcvNotify read FOnImage write FOnImage; end; implementation uses core_c; const ocvCameraCaptureSource: array [TocvCameraCaptureSource] of Longint = // (CV_CAP_ANY, // autodetect CV_CAP_CAM_0, // CV_CAP_CAM_1, // CV_CAP_CAM_2, // CV_CAP_CAM_3, // CV_CAP_CAM_4, // CV_CAP_CAM_5, // CV_CAP_MIL, // MIL proprietary drivers CV_CAP_VFW, // platform native CV_CAP_V4L, // CV_CAP_V4L2, // CV_CAP_FIREWARE, // IEEE 1394 drivers CV_CAP_FIREWIRE, // CV_CAP_IEEE1394, // CV_CAP_DC1394, // CV_CAP_CMU1394, // CV_CAP_STEREO, // TYZX proprietary drivers CV_CAP_TYZX, // CV_TYZX_LEFT, // CV_TYZX_RIGHT, // CV_TYZX_COLOR, // CV_TYZX_Z, // CV_CAP_QT, // QuickTime CV_CAP_UNICAP, // Unicap drivers CV_CAP_DSHOW, // DirectShow (via videoInput) CV_CAP_PVAPI, // PvAPI; Prosilica GigE SDK CV_CAP_OPENNI, // OpenNI (for Kinect) CV_CAP_OPENNI_ASUS, // OpenNI (for Asus Xtion) CV_CAP_ANDROID, // Android CV_CAP_XIAPI, // XIMEA Camera API CV_CAP_AVFOUNDATION); Type TCameraResolution = record cWidth, cHeight: Integer; end; Const CameraResolution: array [TocvResolution] of TCameraResolution = ((cWidth: 160; cHeight: 120), (cWidth: 320; cHeight: 240), (cWidth: 424; cHeight: 240), (cWidth: 640; cHeight: 360), (cWidth: 800; cHeight: 448), (cWidth: 960; cHeight: 544), (cWidth: 1280; cHeight: 720)); {TOpenCVCameraThread} procedure TocvCameraThread.Execute; Var frame: pIplImage; begin while not Terminated do if Assigned(FCapture) then begin try frame := cvQueryFrame(FCapture); if Assigned(frame) then begin if Assigned(OnNotifyData) then Synchronize( procedure begin OnNotifyData(Self, TocvImage.CreateCopy(frame)); end); Sleep(ThreadSleepConst); end; except end; end else Suspend; end; {TOpenCVCamera} constructor TocvCamera.Create(AOwner: TComponent); begin inherited; if not(csDesigning in ComponentState) then begin FOpenCVCameraThread := TocvCameraThread.Create(True); FOpenCVCameraThread.OnNotifyData := OnNotifyData; FEnabled := False; FResolution := r160x120; end; end; destructor TocvCamera.Destroy; begin TerminateCameraThread; ReleaseCamera; inherited; end; procedure TocvCamera.ReleaseCamera; begin if Assigned(FCapture) then begin cvReleaseCapture(FCapture); FCapture := nil; end; end; procedure TocvCamera.TerminateCameraThread; begin if Assigned(FOpenCVCameraThread) then begin FOpenCVCameraThread.Terminate; FOpenCVCameraThread.Resume; FOpenCVCameraThread.WaitFor; FOpenCVCameraThread.Free; FOpenCVCameraThread := Nil; end; end; procedure TocvCamera.OnNotifyData(Sender: TObject; const IplImage: IocvImage); begin if Assigned(OnImage) then OnImage(Self, IplImage); NotifyReceiver(IplImage); end; procedure TocvCamera.SetCameraCaptureSource(const Value: TocvCameraCaptureSource); Var isEnabled: Boolean; begin if FCameraCaptureSource <> Value then begin isEnabled := Enabled; if Assigned(FCapture) and FEnabled then Enabled := False; FCameraCaptureSource := Value; Enabled := isEnabled; end; end; procedure TocvCamera.SetEnabled(const Value: Boolean); begin if FEnabled <> Value then begin if not(csDesigning in ComponentState) then begin if Assigned(FCapture) and FEnabled then begin FOpenCVCameraThread.Suspend; FOpenCVCameraThread.FCapture := nil; cvReleaseCapture(FCapture); FCapture := Nil; end; if Value then begin FCapture := cvCreateCameraCapture(ocvCameraCaptureSource[FCameraCaptureSource]); SetCameraResolution; FOpenCVCameraThread.FCapture := FCapture; FOpenCVCameraThread.Resume; end; end; FEnabled := Value; end; end; procedure TocvCamera.SetCameraResolution; begin cvSetCaptureProperty(FCapture, CV_CAP_PROP_FRAME_WIDTH, CameraResolution[FResolution].cWidth); cvSetCaptureProperty(FCapture, CV_CAP_PROP_FRAME_HEIGHT, CameraResolution[FResolution].cHeight); end; procedure TocvCamera.setResolution(const Value: TocvResolution); begin if FResolution <> Value then begin FResolution := Value; if Enabled then begin Enabled := False; Enabled := True; end; end; end; end.