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Sapera LT ++

Sapera LT++ 连续帧视频的抓取

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提示：以下是本篇文章正文内容

一、SaperaLT++ 抓取连续帧的配置（vs2017）

新建MFC对话框工程，配置环境变量，主要以下两张图的配置，附加包含目录和附加依赖项

D:\Program Files\Teledyne DALSA\Sapera\Classes\Basic
D:\Program Files\Teledyne DALSA\Sapera\Classes\Gui
D:\Program Files\Teledyne DALSA\Sapera\Include
添加包含目录根据自己的安装Sapera LT的路径下找，本文是在D:/Program Files/下

D:\Program Files\Teledyne DALSA\Sapera\Lib\Win64\SapClassBasic.lib
D:\Program Files\Teledyne DALSA\Sapera\Lib\Win64\VS2017\SapClassGuiD.lib

二、代码

1.添加头文件

#include"SapClassBasic.h"
#include"SapClassGui.h"

所建项目的头文件代码如下（GrabMFCDlg.h）：

// GrabMFCDlg.h: 头文件
//

#pragma once
#include"SapClassBasic.h"
#include"SapClassGui.h"
#include<opencv2/opencv.hpp>

// CGrabMFCDlg 对话框
class CGrabMFCDlg : public CDialogEx
{
    
// 构造
public:
	CGrabMFCDlg(CWnd* pParent = nullptr);	// 标准构造函数

	static void XferCallback(SapXferCallbackInfo*pInfo);

	SapAcquisition *m_Acq;         // 设备的连接地址
	SapBuffer      *m_Buffers;     // 缓存对象
	SapTransfer    *m_Xfer;
	SapView        *m_View;

// 对话框数据
//#ifdef AFX_DESIGN_TIME
	enum {
     IDD = IDD_GRABMFC_DIALOG };
//#endif

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV 支持


// 实现
protected:
	HICON m_hIcon;

	// 生成的消息映射函数
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg void OnDestroy();
	DECLARE_MESSAGE_MAP()
public:
	//...........................................
	static int staticCount;
};

2.所建项目的源文件代码如下

// GrabMFCDlg.cpp: 实现文件
//

#include "pch.h"
#include "framework.h"
#include "GrabMFC.h"
#include "GrabMFCDlg.h"
#include "afxdialogex.h"
#include<string>

using namespace std;
#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialogEx
{
    
public:
	CAboutDlg();

// 对话框数据
#ifdef AFX_DESIGN_TIME
	enum {
     IDD = IDD_ABOUTBOX };
#endif

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialogEx(IDD_ABOUTBOX)
{
    
}

int CGrabMFCDlg::staticCount = 0;
static long currentFrame = 1;
static SapGio  *m_pGioInput;
cv::Mat global_source_image;
bool callback_flag;

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    
	CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()


// CGrabMFCDlg 对话框



CGrabMFCDlg::CGrabMFCDlg(CWnd* pParent /*=nullptr*/)
	: CDialogEx(IDD_GRABMFC_DIALOG, pParent)
{
    
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CGrabMFCDlg::XferCallback(SapXferCallbackInfo * pInfo)
{
    
	CGrabMFCDlg *pDlg = (CGrabMFCDlg*)pInfo->GetContext();
	//Refresh view
	pDlg->m_View->Show();

	//BYTE pData;

	//void* pDataAddr = &pData;
	//BOOL success = pDlg->m_Buffers->GetAddress(staticCount, &pDataAddr);
	//int width = pDlg->m_Buffers->GetWidth();
	//int height = pDlg->m_Buffers->GetHeight();
	//cv::Mat img = cv::Mat::zeros(cv::Size(width, height), CV_8U);
	//memcpy(img.data, pDataAddr, width*height);

	//img.copyTo(global_source_image);
	//cv::namedWindow("image", cv::WINDOW_AUTOSIZE);
	//cv::imshow("image", img);

	//stringstream str1;
	//str1 << "D:/picture/00" << currentFrame << ".jpg";
	imwrite(str1.str(), img);
	//currentFrame++;

	//callback_flag = true;  //自定义全局变量
	//cv::waitKey(10);
}

void CGrabMFCDlg::DoDataExchange(CDataExchange* pDX)
{
    
	CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CGrabMFCDlg, CDialogEx)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_DESTROY()
END_MESSAGE_MAP()


// CGrabMFCDlg 消息处理程序

BOOL CGrabMFCDlg::OnInitDialog()
{
    
	CDialogEx::OnInitDialog();

	// 将“关于...”菜单项添加到系统菜单中。

	// IDM_ABOUTBOX 必须在系统命令范围内。
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != nullptr)
	{
    
		BOOL bNameValid;
		CString strAboutMenu;
		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
		ASSERT(bNameValid);
		if (!strAboutMenu.IsEmpty())
		{
    
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 设置此对话框的图标。  当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO: 在此添加额外的初始化代码
	CAcqConfigDlg dlg(this, nullptr);
	INT_PTR nResponse = dlg.DoModal();

	if (nResponse == IDOK) {
    
		m_Acq          = new SapAcquisition(dlg.GetAcquisition());
		m_Buffers = new SapBufferWithTrash(2, m_Acq);
		m_View = new SapView(m_Buffers, GetSafeHwnd());
		m_Xfer = new SapAcqToBuf(m_Acq, m_Buffers, XferCallback, this);
		// Create acquisition object
		if (m_Acq && !*m_Acq && !m_Acq->Create())
			OnCancel();

		// Create buffer object
		if (m_Buffers && !*m_Buffers && !m_Buffers->Create())
			OnCancel();

		// Set client area dimensions to match the dimensions of the buffer
		RECT windowRect, clientRect;
		int MarginsWidth, MarginsHeight, ScreenWidth, ScreenHeight, WindowWidth, WindowHeight;

		GetClientRect(&clientRect);
		GetWindowRect(&windowRect);
		ScreenWidth = GetSystemMetrics(SM_CXSCREEN);
		ScreenHeight = GetSystemMetrics(SM_CYSCREEN);
		MarginsWidth = (windowRect.right - windowRect.left) - clientRect.right;
		MarginsHeight = (windowRect.bottom - windowRect.top) - clientRect.bottom;
		WindowWidth = ((m_Buffers->GetWidth() + MarginsWidth) < ScreenWidth) ? (m_Buffers->GetWidth() + MarginsWidth) : ScreenWidth;
		WindowHeight = ((m_Buffers->GetHeight() + MarginsHeight) < ScreenHeight) ? (m_Buffers->GetHeight() + MarginsHeight) : ScreenHeight;

		MoveWindow(windowRect.left, windowRect.top, WindowWidth, WindowHeight);

		// Create transfer object
		if (m_Xfer && !*m_Xfer && !m_Xfer->Create())
			OnCancel();

		// Create view object
		if (m_View && !*m_View && !m_View->Create())
			OnCancel();


		// Start continuous transfer (live grab)
		m_Xfer->Grab();
		
		//m_Xfer->Snap(m_Buffers->GetCount());
		
	}

	else
	{
    
		MessageBox(_T("No acquisition server found"));
		OnCancel();
	}

	return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}

void CGrabMFCDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
    
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
    
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
    
		CDialogEx::OnSysCommand(nID, lParam);
	}
}

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。  对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CGrabMFCDlg::OnPaint()
{
    
	if (IsIconic())
	{
    
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作区矩形中居中
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
    
		CDialogEx::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CGrabMFCDlg::OnQueryDragIcon()
{
    
	return static_cast<HCURSOR>(m_hIcon);
}



void CGrabMFCDlg::OnDestroy()
{
    
	CDialogEx::OnDestroy();

	// TODO: 在此处添加消息处理程序代码
	// Stop acquisition
	if (m_Xfer && *m_Xfer)
	{
    
		m_Xfer->Freeze();

		// Wait for the acquisition to complete
		if (CAbortDlg(this, m_Xfer).DoModal() != IDOK)
			m_Xfer->Abort();
	}

	// Destroy view object
	if (m_View && *m_View) m_View->Destroy();

	// Destroy transfer object
	if (m_Xfer && *m_Xfer) m_Xfer->Destroy();

	// Destroy buffer object
	if (m_Buffers && *m_Buffers) m_Buffers->Destroy();

	// Destroy acquisition object
	if (m_Acq && *m_Acq) m_Acq->Destroy();

	// Delete all objects
	if (m_View)			delete m_View;
	if (m_Xfer)			delete m_Xfer;
	if (m_Buffers)		delete m_Buffers;
	if (m_Acq)			delete m_Acq;
}

结果

 点击

开始接收连续帧图像