private void CaptureThreadProc_General(tpvCameraObj cameraObj)
{
CameraSdkStatus eStatus;
tSdkFrameHead FrameHead;
IntPtr uRawBuffer; //rawbuffer由SDK内部申请。应用层不要调用delete之类的释放函数
while (cameraObj.m_bExitCaptureThread == false)
{
//500毫秒超时,图像没捕获到前，线程会被挂起,释放CPU，所以该线程中无需调用sleep
eStatus = MvApi.CameraGetImageBuffer(cameraObj.m_hCamera, out FrameHead, out uRawBuffer, 500);
if (eStatus == CameraSdkStatus.CAMERA_STATUS_SUCCESS) //如果是触发模式，则有可能超时
{
//图像处理，将原始输出转换为RGB格式的位图数据，同时叠加白平衡、饱和度、LUT等ISP处理。
MvApi.CameraImageProcess(cameraObj.m_hCamera, uRawBuffer, cameraObj.m_ImageBuffer, ref FrameHead);
//叠加十字线、自动曝光窗口、白平衡窗口信息(仅叠加设置为可见状态的)。
MvApi.CameraImageOverlay(cameraObj.m_hCamera, cameraObj.m_ImageBuffer, ref FrameHead);
//调用SDK封装好的接口，显示预览图像
MvApi.CameraDisplayRGB24(cameraObj.m_hCamera, cameraObj.m_ImageBuffer, ref FrameHead);
//成功调用CameraGetImageBuffer后必须释放，下次才能继续调用CameraGetImageBuffer捕获图像。
MvApi.CameraReleaseImageBuffer(cameraObj.m_hCamera, uRawBuffer);
if (FrameHead.iWidth != cameraObj.m_tFrameHead.iWidth ||
FrameHead.iHeight != cameraObj.m_tFrameHead.iHeight)
{
cameraObj.m_bEraseBk = true;
cameraObj.m_tFrameHead = FrameHead;
}
cameraObj.m_iDisplayedFrames++;
}
}
}
private void BasicForm_FormClosing(object sender, FormClosingEventArgs e)
{
for (int i = 0; i < CAMERA_NUM; i++)
{
tpvCameraObj cameraObj = cameraObjs[i];
//相机1反初始化
if (cameraObj.m_tCaptureThread != null)
{
cameraObj.m_bExitCaptureThread = true;
cameraObj.m_tCaptureThread.Join();
cameraObj.m_tCaptureThread = null;
}
if (cameraObj.m_hCamera != 0)
{
MvApi.CameraUnInit(cameraObj.m_hCamera);
cameraObj.m_hCamera = 0;
}
if (cameraObj.m_ImageBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(cameraObj.m_ImageBuffer);
cameraObj.m_ImageBuffer = IntPtr.Zero;
}
}
}
//相机1
//private tpvCameraObj cameraObj1;
//相机2
//private tpvCameraObj cameraObj2;
#endregion
public BasicForm()
{
InitializeComponent();
//cameraObj1 = new tpvCameraObj();
//cameraObj2 = new tpvCameraObj();
cameraObjs = new tpvCameraObj[CAMERA_NUM];
for (int i = 0; i < CAMERA_NUM; i++)
{
cameraObjs[i] = new tpvCameraObj();
}
InitCamera();
}
/// <summary>
/// 根据设备列表，初始化单个相机
/// </summary>
/// <param name="tCameraDevInfoList">相机设备列表</param>
/// <param name="cameraDevID">第i个相机</param>
/// <param name="PreviewBox">相机对应的PictureBox</param>
/// <param name="CaptureThreadProc1">相机对应的线程处理函数</param>
/// <param name="cameraObj">相机对象</param>
/// <returns></returns>
protected bool InitSingleCamera(tSdkCameraDevInfo[] tCameraDevInfoList, int cameraDevID,
ThreadStart CaptureThreadProc1,
PictureBox PreviewBox, Button BtnPlay, Label StateLabel,
string errMsg,
ref tpvCameraObj cameraObj)
{
if (MvApi.CameraInit(ref tCameraDevInfoList[cameraDevID], -1, -1, ref cameraObj.m_hCamera) == CameraSdkStatus.CAMERA_STATUS_SUCCESS)
{
//获得相机特性描述
MvApi.CameraGetCapability(cameraObj.m_hCamera, out cameraObj.tCameraCapability);
cameraObj.m_ImageBuffer = Marshal.AllocHGlobal(cameraObj.tCameraCapability.sResolutionRange.iWidthMax *
cameraObj.tCameraCapability.sResolutionRange.iHeightMax * 3 + 1024);
//初始化显示模块，使用SDK内部封装好的显示接口
MvApi.CameraDisplayInit(cameraObj.m_hCamera, PreviewBox.Handle);
MvApi.CameraSetDisplaySize(cameraObj.m_hCamera, PreviewBox.Width, PreviewBox.Height);
//让SDK来根据相机的型号动态创建该相机的配置窗口。
MvApi.CameraCreateSettingPage(cameraObj.m_hCamera, this.Handle, tCameraDevInfoList[cameraDevID].acFriendlyName,
/*SettingPageMsgCalBack*/ null, /*m_iSettingPageMsgCallbackCtx*/ (IntPtr)null, 0);
MvApi.CameraPlay(cameraObj.m_hCamera);
BtnPlay.Text = "Pause";
//两种方式来获得预览图像，设置回调函数或者使用定时器或者独立线程的方式，
//主动调用CameraGetImageBuffer接口来抓图。
//本例中仅演示了两种的方式,注意，两种方式也可以同时使用，但是在回调函数中，
//不要使用CameraGetImageBuffer，否则会造成死锁现象。
cameraObj.m_bExitCaptureThread = false;
cameraObj.m_tCaptureThread = new Thread(new ThreadStart(CaptureThreadProc1));
cameraObj.m_tCaptureThread.Start();
}
else
{
cameraObj.m_hCamera = 0;
//StateLabel.Text = "Camera 1 init error";
StateLabel.Text = errMsg;
return(false);
}
return(true);
}
