完善python demo
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luoliangyi
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05dc3aadbd
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48706a5d20
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@ -1,5 +1,8 @@
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import ctypes
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import os
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from os import system
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import time
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import platform
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from ctypes import *
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class HGLibSaveImageParam(Structure):
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@ -8,14 +11,22 @@ class HGLibSaveImageParam(Structure):
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("tiffCompression", c_ulong),
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("tiffJpegQuality", c_ulong),
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("ocr", c_int)]
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print(os.path.abspath('.'))
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Objdll = ctypes.WinDLL("D:/sane/code_app/test/scannerlib/HWScannerLib.dll")
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#加载动态库 所有依赖库必须在同一运行目录下边
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if platform.system() == 'Windows':
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Objdll = ctypes.WinDLL(os.path.abspath('.') + "/HGScannerLib.dll")
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elif platform.system() == "Linux":
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Objdll = cdll.LoadLibrary(os.path.abspath('.') + "/libHGScannerLib.so")
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#加载图像接口示例
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HGLib_LoadImage = Objdll.HGLib_LoadImage
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HGLib_LoadImage.argtypes = [ctypes.c_char_p]
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HGLib_LoadImage.restype = ctypes.c_void_p
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Image = HGLib_LoadImage(c_char_p(b"d:/1.jpg"))
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#保存图像接口示例
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HGLib_SaveImage = Objdll.HGLib_SaveImage
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HGLib_SaveImage.argtypes = [ctypes.c_void_p, ctypes.c_char_p, POINTER(HGLibSaveImageParam)]
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HGLib_SaveImage.restype = ctypes.c_int
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@ -27,16 +38,18 @@ ImageParam.tiffJpegQuality = 0
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ImageParam.ocr = 0
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Ret = HGLib_SaveImage(Image, c_char_p(b"d:/2.jpg"), pointer(ImageParam))
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#释放图像资源
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HGLib_ReleaseImage = Objdll.HGLib_ReleaseImage
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HGLib_ReleaseImage.argtypes = [ctypes.c_void_p]
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HGLib_ReleaseImage.restype = ctypes.c_int
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Ret = HGLib_ReleaseImage(Image)
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#设备热拔插回调事件
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def HGLibDeviceHotPlugEventFunc(event: c_ulong, deviceName: c_char_p, param: c_void_p):
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print(deviceName)
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return
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#初始化操作
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FuncType = CFUNCTYPE(None, c_ulong, c_char_p, c_void_p)
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cb = FuncType(HGLibDeviceHotPlugEventFunc)
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HGLib_InitDevice = Objdll.HGLib_InitDevice
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@ -46,26 +59,36 @@ Ret = HGLib_InitDevice(cb, 0)
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time.sleep(1)
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#获取设备列表
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HGLib_GetDeviceNameList = Objdll.HGLib_GetDeviceNameList
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HGLib_GetDeviceNameList.argtypes = []
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HGLib_GetDeviceNameList.restype = POINTER(ctypes.c_char_p)
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DeviceNameList = HGLib_GetDeviceNameList()
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#打开指定设备
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HGLib_OpenDevice = Objdll.HGLib_OpenDevice
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HGLib_OpenDevice.argtypes = [ctypes.c_char_p]
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HGLib_OpenDevice.restype = ctypes.c_void_p
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Device = HGLib_OpenDevice(DeviceNameList[0])
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#设置扫描参数
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HGLib_SetDeviceParam = Objdll.HGLib_SetDeviceParam
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HGLib_SetDeviceParam.argtypes = [ctypes.c_void_p, ctypes.c_ulong, ctypes.c_void_p]
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HGLib_SetDeviceParam.restype = ctypes.c_int
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DevParam = ctypes.c_int(1)
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Ret = HGLib_SetDeviceParam(Device, 1, byref(DevParam))
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DevParam = ctypes.c_int(1) #HGLIB_OPTION_ENUMVALUE_DLSCLX_W -> 不进行多流输出类型
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Ret = HGLib_SetDeviceParam(Device, 1, byref(DevParam)) #见HGLib_SetDeviceParam 头文件接口说明 1 -> HGLIB_OPTION_NAME_DLSC 多流输出
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bStop=False
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#扫描事件回调
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def HGLibDeviceScanEventFunc(device: c_void_p, event: c_ulong, err: c_int, info: c_char_p, param: c_void_p):
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print(info)
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if event == 2:#HGLIB_DEVSCAN_EVENT_END 扫描停止
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bStop=True
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elif event == 1:
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bStop=False
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return
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#扫描图像事件回调
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def HGLibDeviceScanImageFunc(device: c_void_p, image: c_void_p, param: c_void_p):
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ImageParam = HGLibSaveImageParam()
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ImageParam.size = 20
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@ -76,6 +99,7 @@ def HGLibDeviceScanImageFunc(device: c_void_p, image: c_void_p, param: c_void_p)
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Ret = HGLib_SaveImage(image, c_char_p(b"d:/3.jpg"), pointer(ImageParam))
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return
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#注册扫描相关事件并启动扫描
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FuncType1 = CFUNCTYPE(None, c_void_p, c_ulong, c_int, c_char_p, c_void_p)
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cb1 = FuncType1(HGLibDeviceScanEventFunc)
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FuncType2 = CFUNCTYPE(None, c_void_p, c_void_p, c_void_p)
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@ -86,4 +110,25 @@ HGLib_StartDeviceScan.restyped = ctypes.c_int
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print("start scan")
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Ret = HGLib_StartDeviceScan(Device, cb1, 0, cb2, 0)
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time.sleep(10)
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#模拟扫描持续应等待扫描事件回调返回扫描停止才结束本次扫描流程
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while(bStop != True):
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time.sleep(1)
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break;
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#关闭当前打开的设备
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HGLib_CloseDevice=Objdll.HGLib_CloseDevice
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HGLib_CloseDevice.argtypes = c_void_p
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HGLib_CloseDevice.restype = ctypes.c_int
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HGLib_CloseDevice(Device)
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print("Close Devices")
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#释放设备列表资源
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HGLib_ReleaseDeviceNameList=Objdll.HGLib_ReleaseDeviceNameList
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HGLib_ReleaseDeviceNameList.argtypes=POINTER(ctypes.c_char_p)
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HGLib_ReleaseDeviceNameList.restype = ctypes.c_int
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HGLib_ReleaseDeviceNameList(DeviceNameList)
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print("ReleaseDeviceNameList done")
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print("exit test")
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