C#中如何连接海康威视
C# 连接海康威视
/// <summary>
/// 海康威视SDK
/// </summary>
public class SDK_Hikvision : SDK_Camera
{
/// <summary>
/// 相机名称
/// </summary>
private string Cam_name;
/// <summary>
/// 相机实例
/// </summary>
private MyCamera m_MyCamera;
/// <summary>
/// 图像回调 相机名称图源
/// </summary>
public override event ImageDelegate Image_Delegate;
IntPtr pBufForSaveImage = IntPtr.Zero;
//注册图像回调函数
MyCamera.cbOutputExdelegate ImageCallback;
/// <summary>
/// 是否已连接相机
/// </summary>
public override bool IsOpen {
get {
if (m_MyCamera!=null)
{
return m_MyCamera.MV_CC_IsDeviceConnected_NET();
}
return false;
}
}
/// <summary>
///
/// </summary>
~SDK_Hikvision()
{
}
/// <summary>
/// 实时采集
/// </summary>
public override void Acquisition()
{
if (m_MyCamera == null) return;
if (GetTriggerMode()==TriggerMode.On)
{
SetTriggerMode(TriggerMode.Off);
}
m_MyCamera.MV_CC_StartGrabbing_NET();
}
/// <summary>
/// 关闭采集
/// </summary>
public override void CloseConsecutive()
{
if (m_MyCamera == null) return;
m_MyCamera.MV_CC_StopGrabbing_NET();
}
/// <summary>
/// 关闭相机
/// </summary>
public override void Close_Camera()
{
if (m_MyCamera == null) return;
m_MyCamera.MV_CC_StopGrabbing_NET();
if (pBufForSaveImage != IntPtr.Zero)
{
Marshal.Release(pBufForSaveImage);
}
m_MyCamera.MV_CC_CloseDevice_NET();
m_MyCamera.MV_CC_DestroyDevice_NET();
}
/// <summary>
/// 获取曝光
/// </summary>
/// <returns></returns>
public override double GetExposureTime()
{
if (m_MyCamera!=null)
{
MyCamera.mvcC_FLOATVALUE stParam = new MyCamera.MVCC_FLOATVALUE();
m_MyCamera.MV_CC_GetFloatValue_NET("ExposureTime", ref stParam);
return stParam.fCurValue;
}
return 0;
}
/// <summary>
/// 获取增益
/// </summary>
/// <returns></returns>
public override double GetGainRaw()
{
if (m_MyCamera != null)
{
MyCamera.MVCC_FLOATVALUE stParam = new MyCamera.MVCC_FLOATVALUE();
m_MyCamera.MV_CC_GetFloatValue_NET("Gain", ref stParam);
return stParam.fCurValue;
}
return 0;
}
/// <summary>
/// 获取触发模式
/// </summary>
/// <returns></returns>
public override TriggerMode GetTriggerMode()
{
if (m_MyCamera != null)
{
MyCamera.MVCC_ENUMVALUE MVCC_SOURCE = new MyCamera.MVCC_ENUMVALUE();
m_MyCamera.MV_CC_GetEnumValue_NET("TriggerMode", ref MVCC_SOURCE);
MyCamera.MV_CAM_TRIGGER_MODE Value = (MyCamera.MV_CAM_TRIGGER_MODE)MVCC_SOURCE.nCurValue;
return (TriggerMode)MVCC_SOURCE.nCurValue;
}
return TriggerMode.On;
}
/// <summary>
/// 获取触发源
/// </summary>
/// <returns></returns>
public override TriggerSource GetTriggerSource()
{
if (m_MyCamera != null)
{
MyCamera.MVCC_ENUMVALUE MVCC_SOURCE = new MyCamera.MVCC_ENUMVALUE();
m_MyCamera.MV_CC_GetEnumValue_NET("TriggerSource", ref MVCC_SOURCE);
MyCamera.MV_CAM_TRIGGER_SOURCE Value = (MyCamera.MV_CAM_TRIGGER_SOURCE)MVCC_SOURCE.nCurValue;
return (TriggerSource)MVCC_SOURCE.nCurValue;
}
return TriggerSource.Software;
}
/// <summary>
/// 打开相机
/// </summary>
/// <param name="Cam_Name">相机名称</param>
/// <returns></returns>
public override bool Open_Camera(string Cam_Name)
{
System.GC.Collect();
MyCamera.MV_CC_DEVICE_INFO_LIST m_stDeviceList = new MyCamera.MV_CC_DEVICE_INFO_LIST();
int nRet = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref m_stDeviceList);
if (0 != nRet)
{
return false;
}
for (int i = 0; i < m_stDeviceList.nDeviceNum; i++)
{
MyCamera.MV_CC_DEVICE_INFO device = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO));
if (device.nTLayerType == MyCamera.MV_GIGE_DEVICE)
{
IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(device.SpecialInfo.stGigEInfo, 0);
//MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)MyCamera.ByteToStruct(device.SpecialInfo.stGigEInfo, typeof(MyCamera.MV_GIGE_DEVICE_INFO));
MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_GIGE_DEVICE_INFO));
this.Cam_name = gigeInfo.chUserDefinedName;
}
else if (device.nTLayerType == MyCamera.MV_USB_DEVICE)
{
IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(device.SpecialInfo.stUsb3VInfo, 0);
MyCamera.MV_USB3_DEVICE_INFO usbInfo = (MyCamera.MV_USB3_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_USB3_DEVICE_INFO));
//MyCamera.MV_USB3_DEVICE_INFO usbInfo = (MyCamera.MV_USB3_DEVICE_INFO)MyCamera.ByteToStruct(device.SpecialInfo.stUsb3VInfo, typeof(MyCamera.MV_USB3_DEVICE_INFO));
this.Cam_name = usbInfo.chUserDefinedName;
}
if (Cam_Name == this.Cam_name)
{
//打开设备
if (null == m_MyCamera)
{
m_MyCamera = new MyCamera();
}
//创建设备
nRet = m_MyCamera.MV_CC_CreateDevice_NET(ref device);
if (MyCamera.MV_OK != nRet)
{
return false;
}
//打开设备
nRet = m_MyCamera.MV_CC_OpenDevice_NET();
if (MyCamera.MV_OK != nRet)
{
//打开设备失败 销毁设备句柄
m_MyCamera.MV_CC_DestroyDevice_NET();
return false;
}
// 探测网络最佳包大小(只对GigE相机有效)
if (device.nTLayerType == MyCamera.MV_GIGE_DEVICE)
{
int nPacketSize = m_MyCamera.MV_CC_GetOptimalPacketSize_NET();
if (nPacketSize > 0)
{
m_MyCamera.MV_CC_SetIntValue_NET("GevSCPSPacketSize", (uint)nPacketSize);
}
}
//设置相机模式
//连续采集
m_MyCamera.MV_CC_SetEnumValue_NET("AcquisitionMode", (uint)MyCamera.MV_CAM_ACQUISITION_MODE.MV_ACQ_MODE_CONTINUOUS);
//触发模式
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_ON);
//设置图像缓存节点个数
m_MyCamera.MV_CC_SetImagenodeNum_NET(8);
//注册图像回调函数
ImageCallback = new MyCamera.cbOutputExdelegate(GrabImage);
//来设置数据回调函数。
nRet =m_MyCamera.MV_CC_ReGISterImageCallBackEx_NET(ImageCallback, IntPtr.Zero);
if (MyCamera.MV_OK != nRet)
{
return false;
}
//开启采集
m_MyCamera.MV_CC_StartGrabbing_NET();
return true;
}
}
return false;
}
/// <summary>
/// 图像注册事件
/// </summary>
/// <param name="pData"></param>
/// <param name="pFrameInfo"></param>
/// <param name="pUser"></param>
private void GrabImage(IntPtr pData, ref MyCamera.MV_FRAME_OUT_INFO_EX pFrameInfo, IntPtr pUser)
{
byte[] SrcData = new byte[pFrameInfo.nHeight * pFrameInfo.nWidth];//图像数据
// Marshal.Copy(pData, SrcData, 0, (int)pFrameInfo.nFrameLen);
HObject Hobj;
HOperatorSet.GenEmptyObj(out Hobj);
byte[] imageData = IntPtr2Bytes(pData, (int)(pFrameInfo.nFrameLen));
uint imageLen = pFrameInfo.nFrameLen;
uint imageWidth = pFrameInfo.nWidth;
uint imageHight = pFrameInfo.nHeight;
if (IsMonoPixelFORMat(pFrameInfo.enPixelType))//黑白
{
Hobj.Dispose();
HOperatorSet.GenImage1(out Hobj, "byte", pFrameInfo.nWidth, pFrameInfo.nHeight, pData);
}
else
{
if (pFrameInfo.enPixelType == MyCamera.MvGvspPixelType.PixelType_Gvsp_RGB8_Packed)//RGB
{
Hobj.Dispose();
HOperatorSet.GenImageInterleaved(out Hobj, pData, "rgb", (int)pFrameInfo.nWidth, (int)pFrameInfo.nHeight, 0, "byte", (int)pFrameInfo.nWidth, (int)pFrameInfo.nHeight, 0, 0, -1, 0);
}
else
{
if (pBufForSaveImage == IntPtr.Zero)
{
pBufForSaveImage = Marshal.AllocHGlobal((int)(pFrameInfo.nWidth * pFrameInfo.nHeight * 3 + 2048));
}
MyCamera.MV_PIXEL_CONVERT_PARAM stConverPixelParam = new MyCamera.MV_PIXEL_CONVERT_PARAM();
stConverPixelParam.nWidth = pFrameInfo.nWidth;
stConverPixelParam.nHeight = pFrameInfo.nHeight;
stConverPixelParam.pSrcData = pData;
stConverPixelParam.nSrcDataLen = pFrameInfo.nFrameLen;
stConverPixelParam.enSrcPixelType = pFrameInfo.enPixelType;
stConverPixelParam.enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_RGB8_Packed;//在此处选择需要转换的目标类型
stConverPixelParam.pDstBuffer = pBufForSaveImage;
stConverPixelParam.nDstBufferSize = (uint)(pFrameInfo.nWidth * pFrameInfo.nHeight * 3 + 2048);
m_MyCamera.MV_CC_ConvertPixelType_NET(ref stConverPixelParam);
Hobj.Dispose();
HOperatorSet.GenImageInterleaved(out Hobj, pBufForSaveImage, "rgb", (int)pFrameInfo.nWidth, (int)pFrameInfo.nHeight, 0, "byte", (int)pFrameInfo.nWidth, (int)pFrameInfo.nHeight, 0, 0, -1, 0);
}
}
if (Hobj.CountObj() > 0)
{
Image_Delegate?.Invoke(Cam_name, Hobj?.Clone());
}
Hobj?.Dispose();
System.GC.Collect();
}
public static byte[] IntPtr2Bytes(IntPtr ptr, int size)
{
if (ptr == IntPtr.Zero)
{
return null;
}
byte[] bytes = new byte[size];
Marshal.Copy(ptr, bytes, 0, size);
return bytes;
}
/// <summary>
/// 黑白图像
/// </summary>
/// <param name="enType"></param>
/// <returns></returns>
private bool IsMonoPixelFormat(MyCamera.MvGvspPixelType enType)
{
switch (enType)
{
case MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono8:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono10:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono10_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono12:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono12_Packed:
return true;
default:
return false;
}
}
/// <summary>
/// 彩色图像
/// </summary>
/// <param name="enType"></param>
/// <returns></returns>
private bool IsColorPixelFormat(MyCamera.MvGvspPixelType enType)
{
switch (enType)
{
case MyCamera.MvGvspPixelType.PixelType_Gvsp_RGB8_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BGR8_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_RGBA8_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BGRA8_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_YUV422_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_YUV422_YUYV_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGR8:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerRG8:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGB8:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerBG8:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGB10:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGB10_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerBG10:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerBG10_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerRG10:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerRG10_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGR10:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGR10_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGB12:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGB12_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerBG12:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerBG12_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerRG12:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerRG12_Packed:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGR12:
case MyCamera.MvGvspPixelType.PixelType_Gvsp_BayerGR12_Packed:
return true;
default:
return false;
}
}
/// <summary>
/// 设置曝光
/// </summary>
/// <param name="Value"></param>
/// <returns></returns>
public override double SetExposureTime(double Value)
{
m_MyCamera.MV_CC_SetEnumValue_NET("ExposureAuto", 0);
MyCamera.MVCC_FLOATVALUE stParam = new MyCamera.MVCC_FLOATVALUE();
m_MyCamera.MV_CC_GetFloatValue_NET("ExposureTime", ref stParam);
if (Value <= stParam.fMax && Value >= stParam.fMin)
{
m_MyCamera.MV_CC_SetFloatValue_NET("ExposureTime", (float)Value);
}
return stParam.fCurValue;
}
/// <summary>
/// 设置增益
/// </summary>
/// <param name="Value"></param>
/// <returns></returns>
public override double SetGainRaw(double Value)
{
m_MyCamera.MV_CC_SetEnumValue_NET("GainAuto", 0);
MyCamera.MVCC_FLOATVALUE stParam = new MyCamera.MVCC_FLOATVALUE();
m_MyCamera.MV_CC_GetFloatValue_NET("Gain", ref stParam);
if (Value <= stParam.fMax && Value >= stParam.fMin)
{
m_MyCamera.MV_CC_SetFloatValue_NET("Gain", (float)Value);
}
return stParam.fCurValue;
}
/// <summary>
/// 获取触发模式
/// </summary>
/// <param name="mode"></param>
public override void SetTriggerMode(TriggerMode mode)
{
if (mode == TriggerMode.Off)
{
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_OFF);
}
else
{
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_ON);
}
}
/// <summary>
/// 设置触发源
/// </summary>
/// <param name="source"></param>
public override void SetTriggerSource(TriggerSource source)
{
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_ON);
switch (source)
{
case TriggerSource.Line1:
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerSource", (uint)MyCamera.MV_CAM_TRIGGER_SOURCE.MV_TRIGGER_SOURCE_LINE0);
break;
case TriggerSource.Line2:
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerSource", (uint)MyCamera.MV_CAM_TRIGGER_SOURCE.MV_TRIGGER_SOURCE_LINE1);
break;
case TriggerSource.Software:
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerSource", (uint)MyCamera.MV_CAM_TRIGGER_SOURCE.MV_TRIGGER_SOURCE_SOFTWARE);
break;
default:
break;
}
}
/// <summary>
/// 软触发一次
/// </summary>
public override bool TriggerSoftware()
{
if (m_MyCamera == null) return false;
if (GetTriggerMode()==TriggerMode.Off)
{
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_ON);
m_MyCamera.MV_CC_SetEnumValue_NET("TriggerSource", (uint)MyCamera.MV_CAM_TRIGGER_SOURCE.MV_TRIGGER_SOURCE_SOFTWARE);
}
m_MyCamera.MV_CC_SetCommandValue_NET("TriggerSoftware");
return true;
}
}C#海康威视无法加载DLL“..\bin\HCNetSDK.dll”
项目场景
c#海康威视：System.DllNotFoundException:“无法加载 DLL“…\bin\HCNetSDK.dll”: 找不到指定的模块。 (异常来自 HRESULT:0x8007007E)。”
问题描述
将海康威视的SDK直接复制到我的项目中时，使用到SDK中的方法就出现这个异常。
将demo里的dll放在bin文件夹和bin\Debug文件夹里时也会出错。
原因分析
这个肯定是路径出错了，不然不会报这个找不到指定模块的异常。
解决方案
在代码中选中方法函数，右键转到定义：
将\bin\HCNetSDK.dll改成\Debug\HCNetSDK，这样就不会报错了。
总结
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。
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