public SnapshotRetriever(CameraSummary summary, IGXFactory igxFactory)
{
this.summary = summary;
try
{
device = igxFactory.OpenDeviceBySN(summary.Identifier, GX_ACCESS_MODE.GX_ACCESS_EXCLUSIVE);
featureControl = device.GetRemoteFeatureControl();
DahengHelper.AfterOpen(featureControl);
width = (int)featureControl.GetIntFeature("Width").GetValue();
height = (int)featureControl.GetIntFeature("Height").GetValue();
isColor = DahengHelper.IsColor(featureControl);
stream = device.OpenStream(0);
}
catch (Exception e)
{
LogError(e, "Failed to open device");
}
}
public int OpenCamera()
{
//关闭流
if (null != m_objIGXStream)
{
m_objIGXStream.Close();
m_objIGXStream = null;
}
//关闭设备
if (null != m_objIGXDevice)
{
m_objIGXDevice.Close();
m_objIGXDevice = null;
}
IGXFactory m_objIGXFactory = null;
m_objIGXFactory = IGXFactory.GetInstance();
m_objIGXFactory.Init();
List <IGXDeviceInfo> listGXDeviceInfo = new List <IGXDeviceInfo>();
m_objIGXFactory.UpdateDeviceList(200, listGXDeviceInfo);
foreach (IGXDeviceInfo tempinfo in listGXDeviceInfo)
{
if (tempinfo.GetUserID() == this.name)
{
m_objIGXDevice = ObjIGXFactory.OpenDeviceByUserID(this.Name, GX_ACCESS_MODE.GX_ACCESS_EXCLUSIVE);
m_objIGXFeatureControl = m_objIGXDevice.GetRemoteFeatureControl();
m_DeviceOffLine = m_objIGXDevice.RegisterDeviceOfflineCallback(null, CallOffLineFunction);
}
}
TriggerConfiguration();
SetExposureTime();
return(0);
}
public bool Open()
{
if (listGXDeviceInfo.Count > 0 && objDevice == null)
{
if (camera_id < listGXDeviceInfo.Count)
{
camera_sn = listGXDeviceInfo[camera_id].GetSN();
objDevice = IGXFactory.GetInstance().OpenDeviceBySN(camera_sn, GxIAPINET.GX_ACCESS_MODE.GX_ACCESS_EXCLUSIVE);
objIGXStream = objDevice.OpenStream(0);
objIGXFeatureControl = objDevice.GetRemoteFeatureControl();
objIGXStream.RegisterCaptureCallback(objDevice, OnFrameCallbackFun);
objIGXStream.StartGrab();
}
else
{
Console.WriteLine("相机初始化失败!");
return(false);
}
return(true);
}
return(false);
}
/// <summary>
/// 打开相机
/// </summary>
public override void Open()
{
// 如果设备已经打开则关闭，保证相机在初始化出错情况下能再次打开
if (null != objIGXDevice)
{
objIGXDevice.Close();
objIGXDevice = null;
}
//打开设备
objIGXDevice = IGXFactory.GetInstance().OpenDeviceBySN(strName, GX_ACCESS_MODE.GX_ACCESS_EXCLUSIVE);
objIGXFeatureControl = objIGXDevice.GetRemoteFeatureControl();
//打开流
objIGXStream = objIGXDevice.OpenStream(0);
objIGXStreamFeatureControl = objIGXStream.GetFeatureControl();
// 建议用户在打开网络相机之后，根据当前网络环境设置相机的流通道包长值，
// 以提高网络相机的采集性能,设置方法参考以下代码。
GX_DEVICE_CLASS_LIST objDeviceClass = objIGXDevice.GetDeviceInfo().GetDeviceClass();
if (GX_DEVICE_CLASS_LIST.GX_DEVICE_CLASS_GEV == objDeviceClass)
{
// 判断设备是否支持流通道数据包功能
if (true == objIGXFeatureControl.IsImplemented("GevSCPSPacketSize"))
{
// 获取当前网络环境的最优包长值
uint nPacketSize = objIGXStream.GetOptimalPacketSize();
// 将最优包长值设置为当前设备的流通道包长值
objIGXFeatureControl.GetIntFeature("GevSCPSPacketSize").SetValue(nPacketSize);
}
}
//初始化相机参数
objIGXFeatureControl.GetEnumFeature("AcquisitionMode").SetValue("Continuous"); //设置采集模式连续采集
objIGXFeatureControl.GetEnumFeature("TriggerSource").SetValue("Software"); //设置触发源软触发
objIGXFeatureControl.GetEnumFeature("TriggerMode").SetValue("On"); //默认单张
}
public GxBitmap(IGXDevice objIGXDevice, PictureBox objPictureBox)
{
m_objIGXDevice = objIGXDevice;
m_pic_ShowImage = objPictureBox;
string strValue = null;
if (null != objIGXDevice)
{
//获得图像原始数据大小、宽度、高度等
m_nPayloadSize = (int)objIGXDevice.GetRemoteFeatureControl().GetIntFeature("PayloadSize").GetValue();
m_nWidth = (int)objIGXDevice.GetRemoteFeatureControl().GetIntFeature("Width").GetValue();
m_nHeigh = (int)objIGXDevice.GetRemoteFeatureControl().GetIntFeature("Height").GetValue();
//获取是否为彩色相机
if (objIGXDevice.GetRemoteFeatureControl().IsImplemented("PixelColorFilter"))
{
strValue = objIGXDevice.GetRemoteFeatureControl().GetEnumFeature("PixelColorFilter").GetValue();
if ("None" != strValue)
{
m_bIsColor = true;
}
}
}
//申请用于缓存图像数据的buffer
m_byRawBuffer = new byte[m_nPayloadSize];
m_byMonoBuffer = new byte[__GetStride(m_nWidth, m_bIsColor) * m_nHeigh];
m_byColorBuffer = new byte[__GetStride(m_nWidth, m_bIsColor) * m_nHeigh];
__CreateBitmap(out m_bitmap, m_nWidth, m_nHeigh, m_bIsColor);
if (null != objPictureBox)
{
__CreateBitmap(out m_Showbitmap, m_nWidth, m_nHeigh, m_bIsColor);
}
}
public static double GetResultingFramerate(IGXDevice device)
{
if (device == null)
{
return(0);
}
IGXFeatureControl featureControl = device.GetRemoteFeatureControl();
if (featureControl == null)
{
return(0);
}
try
{
string identifier = "CurrentAcquisitionFrameRate";
bool implemented = featureControl.IsImplemented(identifier);
if (!implemented)
{
return(0);
}
bool readable = featureControl.IsReadable(identifier);
if (!readable)
{
return(0);
}
return(featureControl.GetFloatFeature(identifier).GetValue());
}
catch (Exception e)
{
log.ErrorFormat("Error while reading current acquisition framerate. {0}", e.Message);
return(0);
}
}
/// <summary>
/// 构造函数用于初始化设备对象与PictureBox控件对象
/// </summary>
/// <param name="objIGXDevice">设备对象</param>
/// <param name="objPictureBox">图像显示控件</param>
public GxBitmap(IGXDevice objIGXDevice, PictureBox objPictureBox)
{
m_objIGXDevice = objIGXDevice;
m_pic_ShowImage = objPictureBox;
string strValue = null;
if (null != objIGXDevice)
{
//获得图像原始数据大小、宽度、高度等
m_nPayloadSize = (int)objIGXDevice.GetRemoteFeatureControl().GetIntFeature("PayloadSize").GetValue();
m_nWidth = (int)objIGXDevice.GetRemoteFeatureControl().GetIntFeature("Width").GetValue();
m_nHeigh = (int)objIGXDevice.GetRemoteFeatureControl().GetIntFeature("Height").GetValue();
//获取是否为彩色相机
if (objIGXDevice.GetRemoteFeatureControl().IsImplemented("PixelColorFilter"))
{
strValue = objIGXDevice.GetRemoteFeatureControl().GetEnumFeature("PixelColorFilter").GetValue();
if ("None" != strValue)
{
m_bIsColor = true;
}
}
}
//申请用于缓存图像数据的buffer
m_byRawBuffer = new byte[m_nPayloadSize];
m_byMonoBuffer = new byte[__GetStride(m_nWidth, m_bIsColor) * m_nHeigh];
m_byColorBuffer = new byte[__GetStride(m_nWidth, m_bIsColor) * m_nHeigh];
__CreateBitmap(out m_bitmapForSave, m_nWidth, m_nHeigh, m_bIsColor);
m_objGC = m_pic_ShowImage.CreateGraphics();
m_pHDC = m_objGC.GetHdc();
if (m_bIsColor)
{
m_objBitmapInfo.bmiHeader.biSize = (uint)Marshal.SizeOf(typeof(CWin32Bitmaps.BITMAPINFOHEADER));
m_objBitmapInfo.bmiHeader.biWidth = m_nWidth;
m_objBitmapInfo.bmiHeader.biHeight = -m_nHeigh;
m_objBitmapInfo.bmiHeader.biPlanes = 1;
m_objBitmapInfo.bmiHeader.biBitCount = 24;
m_objBitmapInfo.bmiHeader.biCompression = 0;
m_objBitmapInfo.bmiHeader.biSizeImage = 0;
m_objBitmapInfo.bmiHeader.biXPelsPerMeter = 0;
m_objBitmapInfo.bmiHeader.biYPelsPerMeter = 0;
m_objBitmapInfo.bmiHeader.biClrUsed = 0;
m_objBitmapInfo.bmiHeader.biClrImportant = 0;
}
else
{
m_objBitmapInfo.bmiHeader.biSize = (uint)Marshal.SizeOf(typeof(CWin32Bitmaps.BITMAPINFOHEADER));
m_objBitmapInfo.bmiHeader.biWidth = m_nWidth;
m_objBitmapInfo.bmiHeader.biHeight = -m_nHeigh;
m_objBitmapInfo.bmiHeader.biPlanes = 1;
m_objBitmapInfo.bmiHeader.biBitCount = 8;
m_objBitmapInfo.bmiHeader.biCompression = 0;
m_objBitmapInfo.bmiHeader.biSizeImage = 0;
m_objBitmapInfo.bmiHeader.biXPelsPerMeter = 0;
m_objBitmapInfo.bmiHeader.biYPelsPerMeter = 0;
m_objBitmapInfo.bmiHeader.biClrUsed = 0;
m_objBitmapInfo.bmiHeader.biClrImportant = 0;
m_objBitmapInfo.bmiColors = new CWin32Bitmaps.RGBQUAD[256];
// 黑白图像需要初始化调色板
for (int i = 0; i < 256; i++)
{
m_objBitmapInfo.bmiColors[i].rgbBlue = (byte)i;
m_objBitmapInfo.bmiColors[i].rgbGreen = (byte)i;
m_objBitmapInfo.bmiColors[i].rgbRed = (byte)i;
m_objBitmapInfo.bmiColors[i].rgbReserved = (byte)i;
}
}
m_pBitmapInfo = Marshal.AllocHGlobal(2048);
Marshal.StructureToPtr(m_objBitmapInfo, m_pBitmapInfo, false);
}
private void Open()
{
if (device != null)
{
Close();
}
bool open = false;
try
{
device = igxFactory.OpenDeviceBySN(summary.Identifier, GX_ACCESS_MODE.GX_ACCESS_EXCLUSIVE);
featureControl = device.GetRemoteFeatureControl();
DahengHelper.AfterOpen(featureControl);
open = true;
}
catch
{
log.DebugFormat("Could not open Daheng device.");
}
if (!open)
{
return;
}
SpecificInfo specific = summary.Specific as SpecificInfo;
if (specific == null)
{
return;
}
// Store the camera object into the specific info so that we can retrieve device informations from the configuration dialog.
specific.Device = device;
isColor = DahengHelper.IsColor(featureControl);
if (firstOpen)
{
// Always default to RGB24 for color cameras and Y800 for mono cameras.
// Raw mode will have to be switched explicitly everytime for now.
currentStreamFormat = isColor ? DahengStreamFormat.RGB : DahengStreamFormat.Mono;
// Grab current values.
Dictionary <string, CameraProperty> cameraProperties = CameraPropertyManager.Read(device);
specific.CameraProperties = cameraProperties;
specific.StreamFormat = currentStreamFormat;
}
else
{
CameraPropertyManager.WriteCriticalProperties(device, specific.CameraProperties);
if (specific.StreamFormat != currentStreamFormat)
{
currentStreamFormat = specific.StreamFormat;
}
}
try
{
stream = device.OpenStream(0);
}
catch
{
log.Debug("Could not start Daheng device.");
}
}
private void Snapshot_Click(object sender, EventArgs e)
{
try
{
//1.Open Device
// Before using any GxIAPINET methods, the GxIAPINET must be initialized.
m_objIGXFactory = IGXFactory.GetInstance();
m_objIGXFactory.Init();
//open device
List <IGXDeviceInfo> listGXDeviceInfo = new List <IGXDeviceInfo>();
// Close stream
__CloseStream();
// If the device is opened then close it to ensure the camera could open again.
__CloseDevice();
// Enumerate all camera devices
m_objIGXFactory.UpdateDeviceList(200, listGXDeviceInfo);
// Check if found any device
if (listGXDeviceInfo.Count <= 0)
{
MessageBox.Show("No devices found!");
return;
}
//Open the first found device
m_objIGXDevice = m_objIGXFactory.OpenDeviceBySN(listGXDeviceInfo[0].GetSN(), GX_ACCESS_MODE.GX_ACCESS_EXCLUSIVE);
m_objIGXFeatureControl = m_objIGXDevice.GetRemoteFeatureControl();
// Open stream
if (null != m_objIGXDevice)
{
m_objIGXStream = m_objIGXDevice.OpenStream(0);
}
// It is recommended that the user set the camera's stream channel packet length value
// according to the current network environment after turning on
// the network camera to improve the collection performance of the network camera.
// For the setting method, refer to the following code.
GX_DEVICE_CLASS_LIST objDeviceClass = m_objIGXDevice.GetDeviceInfo().GetDeviceClass();
if (GX_DEVICE_CLASS_LIST.GX_DEVICE_CLASS_GEV == objDeviceClass)
{
// Determine whether the device supports the stream channel packet function.
if (true == m_objIGXFeatureControl.IsImplemented("GevSCPSPacketSize"))
{
// Get the optimal packet length value of the current network environment
uint nPacketSize = m_objIGXStream.GetOptimalPacketSize();
// Set the optimal packet length value to the stream channel packet length of the current device.
m_objIGXFeatureControl.GetIntFeature("GevSCPSPacketSize").SetValue(nPacketSize);
}
}
__InitDevice();
m_objGxBitmap = new GxBitmap(m_objIGXDevice, m_pic_ShowImage);
//2.Start acquisition
// Start stream channel acquisition
if (null != m_objIGXStream)
{
m_objIGXStream.StartGrab();
}
// Send AcquisitionStart command
if (null != m_objIGXFeatureControl)
{
m_objIGXFeatureControl.GetCommandFeature("AcquisitionStart").Execute();
}
//3.Snapshot
IImageData objIImageData = null;
double dElapsedtime = 0;
uint nTimeout = 500;
//Flush image queues to clear out-of-date images
if (null != m_objIGXStream)
{
m_objIGXStream.FlushQueue();
}
//Send TriggerSoftware commands
if (null != m_objIGXFeatureControl)
{
m_objIGXFeatureControl.GetCommandFeature("TriggerSoftware").Execute();
}
//Get image
if (null != m_objIGXStream)
{
//Start stopwatch
m_objStopTime.Start();
objIImageData = m_objIGXStream.GetImage(nTimeout);
//Stop stopwatch and get the ElapsedTime
dElapsedtime = m_objStopTime.Stop();
}
m_objGxBitmap.Show(objIImageData);
string strFileName = @"D:\TestImages\SWS.bmp";
m_objGxBitmap.SaveBmp(objIImageData, strFileName);
if (null != objIImageData)
{
// Release resource
objIImageData.Destroy();
}
//4.Stop acquisition
// Send AcquisitionStop command
if (null != m_objIGXFeatureControl)
{
m_objIGXFeatureControl.GetCommandFeature("AcquisitionStop").Execute();
}
// Stop stream channel acquisition
if (null != m_objIGXStream)
{
m_objIGXStream.StopGrab();
}
//5.Close device
// Reset statistical time count
m_objStatistic.Reset();
// close stream and device
__CloseAll();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
/// 拍摄单张
public void SingleShot(string save_path)
{
strSingleShotName = save_path;
try
{
m_objIGXFactory = IGXFactory.GetInstance();
m_objIGXFactory.Init();
List <IGXDeviceInfo> listGXDeviceInfo = new List <IGXDeviceInfo>();
//关闭流
__CloseStream();
// 如果设备已经打开则关闭，保证相机在初始化出错情况下能再次打开
__CloseDevice();
m_objIGXFactory.UpdateDeviceList(200, listGXDeviceInfo);
// 判断当前连接设备个数
if (listGXDeviceInfo.Count <= 0)
{
MessageBox.Show("未发现设备!");
return;
}
str_MySN = listGXDeviceInfo[0].GetSN();
m_objIGXDevice = m_objIGXFactory.OpenDeviceBySN(str_MySN, GX_ACCESS_MODE.GX_ACCESS_EXCLUSIVE);
if (null == m_objIGXDevice)
{
MessageBox.Show(string.Format("未能打开相机{0}设备。", str_MySN));
return;
}
m_objGxBitmap = new GxBitmap(m_objIGXDevice);
m_objIGXFeatureControl = m_objIGXDevice.GetRemoteFeatureControl();
if (null == m_objIGXFeatureControl)
{
MessageBox.Show(string.Format("未获得相机{0}属性控制。", str_MySN));
return;
}
m_objIGXStream = m_objIGXDevice.OpenStream(0);
if (null == m_objIGXStream)
{
MessageBox.Show(string.Format("相机{0}获取流失败。", str_MySN));
}
//初始化相机参数
m_objIGXFeatureControl.GetEnumFeature("AcquisitionMode").SetValue("Continuous");
m_objIGXFeatureControl.GetEnumFeature("TriggerMode").SetValue("Off");
//打开流，获得单帧图像
m_objIGXStream.StartGrab();
m_objIGXFeatureControl.GetCommandFeature("AcquisitionStart").Execute();
IImageData singleImageData = m_objIGXStream.GetImage(100);
m_objIGXFeatureControl.GetCommandFeature("AcquisitionStop").Execute();
m_objIGXFeatureControl = null;
m_objIGXStream.StopGrab();
__CloseStream();
__CloseDevice();
m_objIGXFactory.Uninit();
if (!Directory.Exists(m_strFilePath))
{
Directory.CreateDirectory(m_strFilePath);
}
strSingleShotName = m_strFilePath + "\\" + strSingleShotName;
m_objGxBitmap.SaveBmp(singleImageData, strSingleShotName);
return;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
