大华工业相机图像采集Python代码实现
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1 #!/usr/bin/env python 2 # coding: utf-8 3 ‘‘‘ 4 Created on 2017-10-25 5 6 @author: 7 ‘‘‘ 8 9 from ImageConvert import * 10 from MVSDK import * 11 import time 12 import numpy 13 import gc 14 from PIL import Image 15 from queue import Queue 16 # from Helper import MessageBox 17 18 19 class Camera: 20 21 def __init__(self): 22 23 self.g_cameraStatusUserInfo = b"statusInfo" 24 self.g_Image_Grabbing_Timer = 10 # unit : s 25 self.g_isStop = 0 26 self.connectCallBackFuncEx = connectCallBackEx(self.deviceLinkNotify) 27 self.frameCallbackFuncEx = callbackFuncEx(self.onGetFrameEx) 28 self.dev = None 29 self.qimage = Queue(maxsize=0) 30 self.userInfo = b"test" 31 # self.messagebox = MessageBox() 32 33 def onGetFrameEx(self, frame, userInfo): 34 """ 取流回调函数Ex """ 35 if (self.g_isStop == 1): 36 return 37 38 nRet = frame.contents.valid(frame) 39 if (nRet != 0): 40 print("frame is invalid!") 41 # 释放驱动图像缓存资源 42 frame.contents.release(frame) 43 return 44 45 print("BlockId = {}".format(str(frame.contents.getBlockId(frame)))) 46 47 #此处客户应用程序应将图像拷贝出使用 48 # 给转码所需的参数赋值 49 imageParams = IMGCNV_SOpenParam() 50 imageParams.dataSize = frame.contents.getImageSize(frame) 51 imageParams.height = frame.contents.getImageHeight(frame) 52 imageParams.width = frame.contents.getImageWidth(frame) 53 imageParams.paddingX = frame.contents.getImagePaddingX(frame) 54 imageParams.paddingY = frame.contents.getImagePaddingY(frame) 55 imageParams.pixelForamt = frame.contents.getImagePixelFormat(frame) 56 57 # 将裸数据图像拷出 58 imageBuff = frame.contents.getImage(frame) 59 userBuff = c_buffer(b‘ ‘, imageParams.dataSize) 60 memmove(userBuff, c_char_p(imageBuff), imageParams.dataSize) 61 62 # 释放驱动图像缓存资源 63 frame.contents.release(frame) 64 65 # 如果图像格式是 Mono8 直接使用 66 if imageParams.pixelForamt == EPixelType.gvspPixelMono8: 67 grayByteArray = bytearray(userBuff) 68 cvImage = numpy.array(grayByteArray).reshape(imageParams.height, imageParams.width) 69 else: 70 # 转码 => BGR24 71 rgbSize = c_int() 72 rgbBuff = c_buffer(b‘ ‘, imageParams.height * imageParams.width * 3) 73 74 nRet = IMGCNV_ConvertToBGR24(cast(userBuff, c_void_p), 75 byref(imageParams), 76 cast(rgbBuff, c_void_p), 77 byref(rgbSize)) 78 79 colorByteArray = bytearray(rgbBuff) 80 cvImage = numpy.array(colorByteArray).reshape(imageParams.height, imageParams.width, 3) 81 82 img = Image.fromarray(cvImage) 83 self.qimage.put(img) 84 gc.collect() 85 86 def deviceLinkNotify(self, connectArg, linkInfo): 87 """ 相机连接状态回调函数 """ 88 if ( EVType.offLine == connectArg.contents.m_event ): 89 print("camera has off line, userInfo [%s]" %(c_char_p(linkInfo).value)) 90 elif ( EVType.onLine == connectArg.contents.m_event ): 91 print("camera has on line, userInfo [%s]" %(c_char_p(linkInfo).value)) 92 93 def subscribeCameraStatus(self, camera): 94 """ 注册相机连接状态回调 注册上下线通知""" 95 eventSubscribe = pointer(GENICAM_EventSubscribe()) 96 eventSubscribeInfo = GENICAM_EventSubscribeInfo() 97 eventSubscribeInfo.pCamera = pointer(camera) 98 nRet = GENICAM_createEventSubscribe(byref(eventSubscribeInfo), byref(eventSubscribe)) 99 if ( nRet != 0): 100 print("create eventSubscribe fail!") 101 return -1 102 103 nRet = eventSubscribe.contents.subscribeConnectArgsEx(eventSubscribe, self.connectCallBackFuncEx, self.g_cameraStatusUserInfo) 104 if ( nRet != 0 ): 105 print("subscribeConnectArgsEx fail!") 106 # 释放相关资源 107 eventSubscribe.contents.release(eventSubscribe) 108 return -1 109 110 # 不再使用时，需释放相关资源 111 eventSubscribe.contents.release(eventSubscribe) 112 return 0 113 114 def unsubscribeCameraStatus(self, camera): 115 """反注册相机连接状态回调 反注册上下线通知""" 116 eventSubscribe = pointer(GENICAM_EventSubscribe()) 117 eventSubscribeInfo = GENICAM_EventSubscribeInfo() 118 eventSubscribeInfo.pCamera = pointer(camera) 119 nRet = GENICAM_createEventSubscribe(byref(eventSubscribeInfo), byref(eventSubscribe)) 120 if ( nRet != 0): 121 print("create eventSubscribe fail!") 122 return -1 123 124 nRet = eventSubscribe.contents.unsubscribeConnectArgsEx(eventSubscribe, self.connectCallBackFuncEx, self.g_cameraStatusUserInfo) 125 if ( nRet != 0 ): 126 print("unsubscribeConnectArgsEx fail!") 127 # 释放相关资源 128 eventSubscribe.contents.release(eventSubscribe) 129 return -1 130 131 # 不再使用时，需释放相关资源 132 eventSubscribe.contents.release(eventSubscribe) 133 return 0 134 135 def setSoftTriggerConf(self): 136 """设置软触发""" 137 if self.dev is None: 138 print("camera is None!") 139 return -1 140 141 # 创建control节点 142 acqCtrlInfo = GENICAM_AcquisitionControlInfo() 143 acqCtrlInfo.pCamera = pointer(self.dev) 144 acqCtrl = pointer(GENICAM_AcquisitionControl()) 145 nRet = GENICAM_createAcquisitionControl(pointer(acqCtrlInfo), byref(acqCtrl)) 146 if ( nRet != 0 ): 147 print("create AcquisitionControl fail!") 148 return -1 149 150 # 设置触发源为软触发 151 trigSourceEnumNode = acqCtrl.contents.triggerSource(acqCtrl) 152 nRet = trigSourceEnumNode.setValueBySymbol(byref(trigSourceEnumNode), b"Software") 153 if ( nRet != 0 ): 154 print("set TriggerSource value [Software] fail!") 155 # 释放相关资源 156 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 157 acqCtrl.contents.release(acqCtrl) 158 return -1 159 160 # 需要释放Node资源 161 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 162 163 # 设置触发方式 164 trigSelectorEnumNode = acqCtrl.contents.triggerSelector(acqCtrl) 165 nRet = trigSelectorEnumNode.setValueBySymbol(byref(trigSelectorEnumNode), b"FrameStart") 166 if ( nRet != 0 ): 167 print("set TriggerSelector value [FrameStart] fail!") 168 # 释放相关资源 169 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 170 acqCtrl.contents.release(acqCtrl) 171 return -1 172 173 # 需要释放Node资源 174 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 175 176 # 打开触发模式 177 trigModeEnumNode = acqCtrl.contents.triggerMode(acqCtrl) 178 nRet = trigModeEnumNode.setValueBySymbol(byref(trigModeEnumNode), b"On") 179 if ( nRet != 0 ): 180 print("set TriggerMode value [On] fail!") 181 # 释放相关资源 182 trigModeEnumNode.release(byref(trigModeEnumNode)) 183 acqCtrl.contents.release(acqCtrl) 184 return -1 185 186 # 需要释放相关资源 187 trigModeEnumNode.release(byref(trigModeEnumNode)) 188 acqCtrl.contents.release(acqCtrl) 189 return 0 190 191 def grabContinue(self): 192 """自由拉流""" 193 if self.dev is None: 194 print("camera is None!") 195 return -1 196 197 # 创建流对象 198 streamSourceInfo = GENICAM_StreamSourceInfo() 199 streamSourceInfo.channelId = 0 200 streamSourceInfo.pCamera = pointer(self.dev) 201 202 streamSource = pointer(GENICAM_StreamSource()) 203 nRet = GENICAM_createStreamSource(pointer(streamSourceInfo), byref(streamSource)) 204 if (nRet != 0): 205 print("create StreamSource fail!") 206 return -1 207 208 # 通用属性设置:设置触发模式为off --根据属性类型，直接构造属性节点。如触发模式是 enumNode，构造enumNode节点 209 # 自由拉流：TriggerMode 需为 off 210 trigModeEnumNode = pointer(GENICAM_EnumNode()) 211 trigModeEnumNodeInfo = GENICAM_EnumNodeInfo() 212 trigModeEnumNodeInfo.pCamera = pointer(self.dev) 213 trigModeEnumNodeInfo.attrName = b"TriggerMode" 214 nRet = GENICAM_createEnumNode(byref(trigModeEnumNodeInfo), byref(trigModeEnumNode)) 215 if ( nRet != 0 ): 216 print("create TriggerMode Node fail!") 217 # 释放相关资源 218 streamSource.contents.release(streamSource) 219 return -1 220 221 nRet = trigModeEnumNode.contents.setValueBySymbol(trigModeEnumNode, b"Off") 222 if ( nRet != 0 ): 223 print("set TriggerMode value [Off] fail!") 224 # 释放相关资源 225 trigModeEnumNode.contents.release(trigModeEnumNode) 226 streamSource.contents.release(streamSource) 227 return -1 228 229 # 需要释放Node资源 230 trigModeEnumNode.contents.release(trigModeEnumNode) 231 232 def setLineTriggerConf(self): 233 """设置外触发""" 234 if self.dev is None: 235 print("camera is None!") 236 return -1 237 238 # 创建control节点 239 acqCtrlInfo = GENICAM_AcquisitionControlInfo() 240 acqCtrlInfo.pCamera = pointer(self.dev) 241 acqCtrl = pointer(GENICAM_AcquisitionControl()) 242 nRet = GENICAM_createAcquisitionControl(pointer(acqCtrlInfo), byref(acqCtrl)) 243 if ( nRet != 0 ): 244 print("create AcquisitionControl fail!") 245 return -1 246 247 # 设置触发源为软触发 248 trigSourceEnumNode = acqCtrl.contents.triggerSource(acqCtrl) 249 nRet = trigSourceEnumNode.setValueBySymbol(byref(trigSourceEnumNode), b"Line1") 250 if ( nRet != 0 ): 251 print("set TriggerSource value [Line1] fail!") 252 # 释放相关资源 253 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 254 acqCtrl.contents.release(acqCtrl) 255 return -1 256 257 # 需要释放Node资源 258 trigSourceEnumNode.release(byref(trigSourceEnumNode)) 259 260 # 设置触发方式 261 trigSelectorEnumNode = acqCtrl.contents.triggerSelector(acqCtrl) 262 nRet = trigSelectorEnumNode.setValueBySymbol(byref(trigSelectorEnumNode), b"FrameStart") 263 if ( nRet != 0 ): 264 print("set TriggerSelector value [FrameStart] fail!") 265 # 释放相关资源 266 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 267 acqCtrl.contents.release(acqCtrl) 268 return -1 269 270 # 需要释放Node资源 271 trigSelectorEnumNode.release(byref(trigSelectorEnumNode)) 272 273 # 打开触发模式 274 trigModeEnumNode = acqCtrl.contents.triggerMode(acqCtrl) 275 nRet = trigModeEnumNode.setValueBySymbol(byref(trigModeEnumNode), b"On") 276 if ( nRet != 0 ): 277 print("set TriggerMode value [On] fail!") 278 # 释放相关资源 279 trigModeEnumNode.release(byref(trigModeEnumNode)) 280 acqCtrl.contents.release(acqCtrl) 281 return -1 282 283 # 需要释放Node资源 284 trigModeEnumNode.release(byref(trigModeEnumNode)) 285 286 # 设置触发沿 287 trigActivationEnumNode = acqCtrl.contents.triggerActivation(acqCtrl) 288 nRet = trigActivationEnumNode.setValueBySymbol(byref(trigActivationEnumNode), b"RisingEdge") 289 if ( nRet != 0 ): 290 print("set TriggerActivation value [RisingEdge] fail!") 291 # 释放相关资源 292 trigActivationEnumNode.release(byref(trigActivationEnumNode)) 293 acqCtrl.contents.release(acqCtrl) 294 return -1 295 296 # 需要释放Node资源 297 trigActivationEnumNode.release(byref(trigActivationEnumNode)) 298 acqCtrl.contents.release(acqCtrl) 299 return 0 300 301 def openCamera(self): 302 """打开相机""" 303 304 # 发现相机 305 cameraCnt, cameraList = self.enumCameras() 306 if cameraCnt is None: 307 return -1 308 309 # 显示相机信息 310 for index in range(0, cameraCnt): 311 camera = cameraList[index] 312 print(" Camera Id = " + str(index)) 313 print("Key = " + str(camera.getKey(camera))) 314 print("vendor name = " + str(camera.getVendorName(camera))) 315 print("Model name = " + str(camera.getModelName(camera))) 316 print("Serial number = " + str(camera.getSerialNumber(camera))) 317 318 camera = cameraList[0] 319 self.dev = camera 320 321 # 连接相机 322 nRet = camera.connect(camera, c_int(GENICAM_ECameraAccessPermission.accessPermissionControl)) 323 if ( nRet != 0 ): 324 print("camera connect fail!") 325 # self.messagebox.Error("camera connect fail!") 326 return -1 327 else: 328 print("camera connect success.") 329 330 # 注册相机连接状态回调 331 nRet = self.subscribeCameraStatus(camera) 332 if ( nRet != 0 ): 333 print("subscribeCameraStatus fail!") 334 return -1 335 336 # 创建流对象 337 streamSourceInfo = GENICAM_StreamSourceInfo() 338 streamSourceInfo.channelId = 0 339 streamSourceInfo.pCamera = pointer(camera) 340 341 streamSource = pointer(GENICAM_StreamSource()) 342 nRet = GENICAM_createStreamSource( 343 pointer(streamSourceInfo), 344 byref(streamSource)) 345 if (nRet != 0): 346 print("create StreamSource fail!") 347 return -1 348 349 # 注册拉流回调函数 350 nRet = streamSource.contents.attachGrabbingEx(streamSource, self.frameCallbackFuncEx, self.userInfo) 351 if (nRet != 0): 352 print("attachGrabbingEx fail!") 353 # 释放相关资源 354 streamSource.contents.release(streamSource) 355 return -1 356 357 # 开始拉流 358 nRet = streamSource.contents.startGrabbing(streamSource, c_ulonglong(0), 359 c_int(GENICAM_EGrabStrategy.grabStrartegySequential)) 360 if (nRet != 0): 361 print("startGrabbing fail!") 362 # 释放相关资源 363 streamSource.contents.release(streamSource) 364 return -1 365 366 return 0 367 368 def closeCamera(self): 369 """关闭相机""" 370 if self.dev is None: 371 print("camera is None!") 372 return -1 373 374 # 反注册相机连接状态回调 375 nRet = self.unsubscribeCameraStatus(self.dev) 376 if ( nRet != 0 ): 377 print("unsubscribeCameraStatus fail!") 378 return -1 379 380 # 断开相机 381 nRet = self.dev.disConnect(byref(self.dev)) 382 if ( nRet != 0 ): 383 print("disConnect camera fail!") 384 return -1 385 print("camera is closed") 386 return 0 387 388 def setExposureTime(self, dVal): 389 """设置曝光时间""" 390 if self.dev is None: 391 print("camera is None!") 392 return -1 393 394 # 通用属性设置:设置曝光 --根据属性类型，直接构造属性节点。如曝光是 double类型，构造doubleNode节点 395 exposureTimeNode = pointer(GENICAM_DoubleNode()) 396 exposureTimeNodeInfo = GENICAM_DoubleNodeInfo() 397 exposureTimeNodeInfo.pCamera = pointer(self.dev) 398 exposureTimeNodeInfo.attrName = b"ExposureTime" 399 nRet = GENICAM_createDoubleNode(byref(exposureTimeNodeInfo), byref(exposureTimeNode)) 400 if ( nRet != 0 ): 401 print("create ExposureTime Node fail!") 402 return -1 403 404 # 设置曝光时间 405 nRet = exposureTimeNode.contents.setValue(exposureTimeNode, c_double(dVal)) 406 if ( nRet != 0 ): 407 print("set ExposureTime value [%f]us fail!" % (dVal)) 408 # 释放相关资源 409 exposureTimeNode.contents.release(exposureTimeNode) 410 return -1 411 else: 412 print("set ExposureTime value [%f]us success." % (dVal)) 413 414 # 释放节点资源 415 exposureTimeNode.contents.release(exposureTimeNode) 416 return 0 417 418 def enumCameras(self): 419 """枚举相机 网络中搜索可连接的设备""" 420 # 获取系统单例 421 system = pointer(GENICAM_System()) 422 nRet = GENICAM_getSystemInstance(byref(system)) 423 if ( nRet != 0 ): 424 print("getSystemInstance fail!") 425 return None, None 426 427 # 发现相机 428 cameraList = pointer(GENICAM_Camera()) 429 cameraCnt = c_uint() 430 nRet = system.contents.discovery(system, byref(cameraList), byref(cameraCnt), c_int(GENICAM_EProtocolType.typeAll)); 431 if ( nRet != 0 ): 432 print("discovery fail!") 433 return None, None 434 elif cameraCnt.value < 1: 435 print("discovery no camera!") 436 # self.messagebox.Info("discovery no camera!") 437 return None, None 438 else: 439 print("cameraCnt: " + str(cameraCnt.value)) 440 return cameraCnt.value, cameraList 441 442 def grabOne(self): 443 """单次触发""" 444 if self.dev is None: 445 print("camera is None!") 446 return -1 447 448 # 创建流对象 449 streamSourceInfo = GENICAM_StreamSourceInfo() 450 streamSourceInfo.channelId = 0 451 streamSourceInfo.pCamera = pointer(self.dev) 452 453 streamSource = pointer(GENICAM_StreamSource()) 454 nRet = GENICAM_createStreamSource(pointer(streamSourceInfo), byref(streamSource)) 455 if ( nRet != 0 ): 456 print("create StreamSource fail!") 457 return -1 458 459 # 创建control节点 460 acqCtrlInfo = GENICAM_AcquisitionControlInfo() 461 acqCtrlInfo.pCamera = pointer(self.dev) 462 acqCtrl = pointer(GENICAM_AcquisitionControl()) 463 nRet = GENICAM_createAcquisitionControl(pointer(acqCtrlInfo), byref(acqCtrl)) 464 if ( nRet != 0 ): 465 print("create AcquisitionControl fail!") 466 # 释放相关资源 467 streamSource.contents.release(streamSource) 468 return -1 469 470 # 打开触发模式 471 trigModeEnumNode = acqCtrl.contents.triggerMode(acqCtrl) 472 nRet = trigModeEnumNode.setValueBySymbol(byref(trigModeEnumNode), b"On") 473 if (nRet != 0): 474 print("set TriggerMode value [On] fail!") 475 # 释放相关资源 476 trigModeEnumNode.release(byref(trigModeEnumNode)) 477 acqCtrl.contents.release(acqCtrl) 478 return -1 479 480 # 需要释放相关资源 481 trigModeEnumNode.release(byref(trigModeEnumNode)) 482 483 # 执行一次软触发 484 trigSoftwareCmdNode = acqCtrl.contents.triggerSoftware(acqCtrl) 485 nRet = trigSoftwareCmdNode.execute(byref(trigSoftwareCmdNode)) 486 if( nRet != 0 ): 487 print("Execute triggerSoftware fail!") 488 # 释放相关资源 489 trigSoftwareCmdNode.release(byref(trigSoftwareCmdNode)) 490 acqCtrl.contents.release(acqCtrl) 491 streamSource.contents.release(streamSource) 492 return -1 493 494 # 释放相关资源 495 trigSoftwareCmdNode.release(byref(trigSoftwareCmdNode)) 496 acqCtrl.contents.release(acqCtrl) 497 streamSource.contents.release(streamSource) 498 return 0 499 500 def setROI(self, OffsetX, OffsetY, nWidth, nHeight): 501 """设置感兴趣区域 --- 感兴趣区域的宽高 和 xy方向的偏移量 入参值应符合对应相机的递增规则""" 502 #获取原始的宽度 503 widthMaxNode = pointer(GENICAM_IntNode()) 504 widthMaxNodeInfo = GENICAM_IntNodeInfo() 505 widthMaxNodeInfo.pCamera = pointer(self.dev) 506 widthMaxNodeInfo.attrName = b"WidthMax" 507 nRet = GENICAM_createIntNode(byref(widthMaxNodeInfo), byref(widthMaxNode)) 508 if ( nRet != 0 ): 509 print("create WidthMax Node fail!") 510 return -1 511 512 oriWidth = c_longlong() 513 nRet = widthMaxNode.contents.getValue(widthMaxNode, byref(oriWidth)) 514 if ( nRet != 0 ): 515 print("widthMaxNode getValue fail!") 516 # 释放相关资源 517 widthMaxNode.contents.release(widthMaxNode) 518 return -1 519 520 # 释放相关资源 521 widthMaxNode.contents.release(widthMaxNode) 522 523 # 获取原始的高度 524 heightMaxNode = pointer(GENICAM_IntNode()) 525 heightMaxNodeInfo = GENICAM_IntNodeInfo() 526 heightMaxNodeInfo.pCamera = pointer(self.dev) 527 heightMaxNodeInfo.attrName = b"HeightMax" 528 nRet = GENICAM_createIntNode(byref(heightMaxNodeInfo), byref(heightMaxNode)) 529 if ( nRet != 0 ): 530 print("create HeightMax Node fail!") 531 return -1 532 533 oriHeight = c_longlong() 534 nRet = heightMaxNode.contents.getValue(heightMaxNode, byref(oriHeight)) 535 if ( nRet != 0 ): 536 print("heightMaxNode getValue fail!") 537 # 释放相关资源 538 heightMaxNode.contents.release(heightMaxNode) 539 return -1 540 541 # 释放相关资源 542 heightMaxNode.contents.release(heightMaxNode) 543 544 # 检验参数 545 if ( ( oriWidth.value < (OffsetX + nWidth)) or ( oriHeight.value < (OffsetY + nHeight)) ): 546 print("please check input param!") 547 return -1 548 549 # 设置宽度 550 widthNode = pointer(GENICAM_IntNode()) 551 widthNodeInfo = GENICAM_IntNodeInfo() 552 widthNodeInfo.pCamera = pointer(self.dev) 553 widthNodeInfo.attrName = b"Width" 554 nRet = GENICAM_createIntNode(byref(widthNodeInfo), byref(widthNode)) 555 if ( nRet != 0 ): 556 print("create Width Node fail!") 557 return -1 558 559 nRet = widthNode.contents.setValue(widthNode, c_longlong(nWidth)) 560 if ( nRet != 0 ): 561 print("widthNode setValue [%d] fail!" % (nWidth)) 562 # 释放相关资源 563 widthNode.contents.release(widthNode) 564 return -1 565 566 # 释放相关资源 567 widthNode.contents.release(widthNode) 568 569 # 设置高度 570 heightNode = pointer(GENICAM_IntNode()) 571 heightNodeInfo = GENICAM_IntNodeInfo() 572 heightNodeInfo.pCamera = pointer(self.dev) 573 heightNodeInfo.attrName = b"Height" 574 nRet = GENICAM_createIntNode(byref(heightNodeInfo), byref(heightNode)) 575 if ( nRet != 0 ): 576 print("create Height Node fail!") 577 return -1 578 579 nRet = heightNode.contents.setValue(heightNode, c_longlong(nHeight)) 580 if ( nRet != 0 ): 581 print("heightNode setValue [%d] fail!" % (nHeight)) 582 # 释放相关资源 583 heightNode.contents.release(heightNode) 584 return -1 585 586 # 释放相关资源 587 heightNode.contents.release(heightNode) 588 589 # 设置OffsetX 590 OffsetXNode = pointer(GENICAM_IntNode()) 591 OffsetXNodeInfo = GENICAM_IntNodeInfo() 592 OffsetXNodeInfo.pCamera = pointer(self.dev) 593 OffsetXNodeInfo.attrName = b"OffsetX" 594 nRet = GENICAM_createIntNode(byref(OffsetXNodeInfo), byref(OffsetXNode)) 595 if ( nRet != 0 ): 596 print("create OffsetX Node fail!") 597 return -1 598 599 nRet = OffsetXNode.contents.setValue(OffsetXNode, c_longlong(OffsetX)) 600 if ( nRet != 0 ): 601 print("OffsetX setValue [%d] fail!" % (OffsetX)) 602 # 释放相关资源 603 OffsetXNode.contents.release(OffsetXNode) 604 return -1 605 606 # 释放相关资源 607 OffsetXNode.contents.release(OffsetXNode) 608 609 # 设置OffsetY 610 OffsetYNode = pointer(GENICAM_IntNode()) 611 OffsetYNodeInfo = GENICAM_IntNodeInfo() 612 OffsetYNodeInfo.pCamera = pointer(self.dev) 613 OffsetYNodeInfo.attrName = b"OffsetY" 614 nRet = GENICAM_createIntNode(byref(OffsetYNodeInfo), byref(OffsetYNode)) 615 if ( nRet != 0 ): 616 print("create OffsetY Node fail!") 617 return -1 618 619 nRet = OffsetYNode.contents.setValue(OffsetYNode, c_longlong(OffsetY)) 620 if ( nRet != 0 ): 621 print("OffsetY setValue [%d] fail!" % (OffsetY)) 622 # 释放相关资源 623 OffsetYNode.contents.release(OffsetYNode) 624 return -1 625 626 # 释放相关资源 627 OffsetYNode.contents.release(OffsetYNode) 628 return 0 629 630 def demo(self): 631 # 发现相机 632 cameraCnt, cameraList = self.enumCameras() 633 if cameraCnt is None: 634 return -1 635 636 # 显示相机信息 637 for index in range(0, cameraCnt): 638 camera = cameraList[index] 639 print(" Camera Id = " + str(index)) 640 print("Key = " + str(camera.getKey(camera))) 641 print("vendor name = " + str(camera.getVendorName(camera))) 642 print("Model name = " + str(camera.getModelName(camera))) 643 print("Serial number = " + str(camera.getSerialNumber(camera))) 644 645 # 选择第一个相机 646 camera = cameraList[0] 647 self.dev = camera 648 649 # 打开相机 650 nRet = self.openCamera(self.dev) 651 if ( nRet != 0 ): 652 print("openCamera fail.") 653 self.messagebox.Error("openCamera fail !") 654 return -1 655 656 self.setSoftTriggerConf() 657 658 # 创建流对象 659 streamSourceInfo = GENICAM_StreamSourceInfo() 660 streamSourceInfo.channelId = 0 661 streamSourceInfo.pCamera = pointer(camera) 662 663 streamSource = pointer(GENICAM_StreamSource()) 664 nRet = GENICAM_createStreamSource(pointer(streamSourceInfo), byref(streamSource)) 665 if ( nRet != 0 ): 666 print("create StreamSource fail!") 667 self.messagebox.Error("create StreamSource fail!") 668 return -1 669 670 # # 通用属性设置:设置触发模式为off --根据属性类型，直接构造属性节点。如触发模式是 enumNode，构造enumNode节点 671 # # 自由拉流：TriggerMode 需为 off 672 # trigModeEnumNode = pointer(GENICAM_EnumNode()) 673 # trigModeEnumNodeInfo = GENICAM_EnumNodeInfo() 674 # trigModeEnumNodeInfo.pCamera = pointer(camera) 675 # trigModeEnumNodeInfo.attrName = b"TriggerMode" 676 # nRet = GENICAM_createEnumNode(byref(trigModeEnumNodeInfo), byref(trigModeEnumNode)) 677 # if ( nRet != 0 ): 678 # print("create TriggerMode Node fail!") 679 # # 释放相关资源 680 # streamSource.contents.release(streamSource) 681 # return -1 682 # 683 # nRet = trigModeEnumNode.contents.setValueBySymbol(trigModeEnumNode, b"On") 684 # if ( nRet != 0 ): 685 # print("set TriggerMode value [Off] fail!") 686 # # 释放相关资源 687 # trigModeEnumNode.contents.release(trigModeEnumNode) 688 # streamSource.contents.release(streamSource) 689 # return -1 690 # 691 # # 需要释放Node资源 692 # trigModeEnumNode.contents.release(trigModeEnumNode) 693 694 # 注册拉流回调函数 695 nRet = streamSource.contents.attachGrabbingEx(streamSource, self.frameCallbackFuncEx, self.userInfo) 696 if ( nRet != 0 ): 697 print("attachGrabbingEx fail!") 698 self.messagebox.Error("attachGrabbingEx fail!") 699 # 释放相关资源 700 streamSource.contents.release(streamSource) 701 return -1 702 703 # 开始拉流 704 nRet = streamSource.contents.startGrabbing(streamSource, c_ulonglong(0), 705 c_int(GENICAM_EGrabStrategy.grabStrartegySequential)) 706 if( nRet != 0): 707 print("startGrabbing fail!") 708 self.messagebox.Error("startGrabbing fail!") 709 # 释放相关资源 710 streamSource.contents.release(streamSource) 711 return -1 712 713 # 循环触发 714 # while True: 715 # self.grabOne(camera) 716 # time.sleep(1) 717 # 718 # # 反注册回调函数 719 # nRet = streamSource.contents.detachGrabbingEx(streamSource, self.frameCallbackFuncEx, userInfo) 720 # if ( nRet != 0 ): 721 # print("detachGrabbingEx fail!") 722 # # 释放相关资源 723 # streamSource.contents.release(streamSource) 724 # return -1 725 # 726 # # 停止拉流 727 # nRet = streamSource.contents.stopGrabbing(streamSource) 728 # if ( nRet != 0 ): 729 # print("stopGrabbing fail!") 730 # # 释放相关资源 731 # streamSource.contents.release(streamSource) 732 # return -1 733 # 734 # # 关闭相机 735 # nRet = self.closeCamera(camera) 736 # if ( nRet != 0 ): 737 # print("closeCamera fail") 738 # # 释放相关资源 739 # streamSource.contents.release(streamSource) 740 # return -1 741 # 742 # # 释放相关资源 743 # streamSource.contents.release(streamSource) 744 # return 0 745 746 747 if __name__ == "__main__": 748 749 cam = Camera() 750 nRet = cam.demo() 751 if nRet != 0: 752 print("Some Error happend") 753 print("--------- Demo end ---------") 754 # 3s exit 755 time.sleep(3)
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