mirror of
https://github.com/Laex/Delphi-OpenCV.git
synced 2024-11-15 15:55:53 +01:00
135 lines
3.7 KiB
ObjectPascal
135 lines
3.7 KiB
ObjectPascal
// *****************************************************************
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// Delphi-OpenCV Demo
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// Copyright (C) 2013 Project Delphi-OpenCV
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// ****************************************************************
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// Contributor:
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// Laentir Valetov
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// email:laex@bk.ru
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// ****************************************************************
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// You may retrieve the latest version of this file at the GitHub,
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// located at git://github.com/Laex/Delphi-OpenCV.git
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// ****************************************************************
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// The contents of this file are used with permission, subject to
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// the Mozilla Public License Version 1.1 (the "License"); you may
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// not use this file except in compliance with the License. You may
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// obtain a copy of the License at
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// http://www.mozilla.org/MPL/MPL-1_1Final.html
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//
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// Software distributed under the License is distributed on an
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// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// rights and limitations under the License.
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// *******************************************************************
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program TwoCameras_C_Thread;
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{$APPTYPE CONSOLE}
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{$R *.res}
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uses
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WinApi.Windows,
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System.SysUtils,
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ocv.highgui_c,
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ocv.core_c,
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ocv.core.types_c,
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ocv.imgproc_c,
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ocv.imgproc.types_c;
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Const
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EXIT_SUCCESS = 1;
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var
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crSec: TRTLCriticalSection;
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Const
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VidLeft: pCVChar = 'WebCamLeft';
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VidRight: pCVChar = 'WebcamRight';
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function threadFunc(param: LPVOID): DWORD; stdcall;
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Var
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frm: pIplImage;
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capture: pCvCapture;
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begin
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EnterCriticalSection(crSec);
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cvNamedWindow(VidLeft);
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capture := cvCreateCameraCapture(1);
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if Assigned(capture) then
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begin
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cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, 320);
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cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, 240);
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end;
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LeaveCriticalSection(crSec);
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if Assigned(capture) then
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repeat
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EnterCriticalSection(crSec);
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frm := cvQueryFrame(capture);
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LeaveCriticalSection(crSec);
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if Assigned(frm) then
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begin
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EnterCriticalSection(crSec);
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cvShowImage(VidLeft, frm);
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LeaveCriticalSection(crSec);
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end;
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if cvWaitKey(1) = 27 then
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break;
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until not Assigned(frm);
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EnterCriticalSection(crSec);
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cvDestroyWindow(VidLeft);
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cvReleaseCapture(capture);
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LeaveCriticalSection(crSec);
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Result := EXIT_SUCCESS;
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end;
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function threadFunc2(param: LPVOID): DWORD; stdcall;
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Var
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frm: pIplImage;
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capture: pCvCapture;
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begin
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EnterCriticalSection(crSec);
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cvNamedWindow(VidRight);
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capture := cvCreateCameraCapture(0);
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if Assigned(capture) then
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begin
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cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, 320);
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cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, 240);
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end;
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LeaveCriticalSection(crSec);
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if Assigned(capture) then
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repeat
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EnterCriticalSection(crSec);
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frm := cvQueryFrame(capture);
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LeaveCriticalSection(crSec);
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if Assigned(frm) then
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begin
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EnterCriticalSection(crSec);
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cvShowImage(VidRight, frm);
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LeaveCriticalSection(crSec);
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end;
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if cvWaitKey(1) = 27 then
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break;
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until not Assigned(frm);
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EnterCriticalSection(crSec);
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cvDestroyWindow(VidRight);
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cvReleaseCapture(capture);
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LeaveCriticalSection(crSec);
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Result := EXIT_SUCCESS;
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end;
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Var
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threadID, threadID2: DWORD;
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lpHandles: array [0 .. 1] of THandle;
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begin
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try
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InitializeCriticalSection(crSec);
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lpHandles[0] := CreateThread(nil, 0, @threadFunc, nil, 0, threadID);
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lpHandles[1] := CreateThread(nil, 0, @threadFunc2, nil, 0, threadID2);
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WaitForMultipleObjects(Length(lpHandles), @lpHandles, TRUE, INFINITE);
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DeleteCriticalSection(crSec);
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except
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on E: Exception do
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WriteLn(E.ClassName, ': ', E.Message);
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end;
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end.
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