HGScannerLib增加python demo

test/scannerlib/test.py

@@ -0,0 +1,89 @@
+import ctypes
+import time
+from ctypes import * 
+
+class HGLibSaveImageParam(Structure):  
+    _fields_ = [ ("size", c_ulong),  
+                 ("jpegQuality", c_ulong),  
+                 ("tiffCompression", c_ulong),
+                 ("tiffJpegQuality", c_ulong),
+                 ("ocr", c_int)]
+
+Objdll = ctypes.WinDLL("D:/sane/code_app/test/scannerlib/HWScannerLib.dll")
+
+HGLib_LoadImage = Objdll.HGLib_LoadImage
+HGLib_LoadImage.argtypes = [ctypes.c_char_p]
+HGLib_LoadImage.restype = ctypes.c_void_p
+Image = HGLib_LoadImage(c_char_p(b"d:/1.jpg"))
+
+HGLib_SaveImage = Objdll.HGLib_SaveImage
+HGLib_SaveImage.argtypes = [ctypes.c_void_p, ctypes.c_char_p, POINTER(HGLibSaveImageParam)]
+HGLib_SaveImage.restype = ctypes.c_int
+ImageParam = HGLibSaveImageParam()
+ImageParam.size = 20
+ImageParam.jpegQuality = 100
+ImageParam.tiffCompression = 0
+ImageParam.tiffJpegQuality = 0
+ImageParam.ocr = 0
+Ret = HGLib_SaveImage(Image, c_char_p(b"d:/2.jpg"), pointer(ImageParam))
+
+HGLib_ReleaseImage = Objdll.HGLib_ReleaseImage
+HGLib_ReleaseImage.argtypes = [ctypes.c_void_p]
+HGLib_ReleaseImage.restype = ctypes.c_int
+Ret = HGLib_ReleaseImage(Image)
+
+
+def HGLibDeviceHotPlugEventFunc(event: c_ulong, deviceName: c_char_p, param: c_void_p):
+    print(deviceName)
+    return
+
+FuncType = CFUNCTYPE(None, c_ulong, c_char_p, c_void_p)
+cb = FuncType(HGLibDeviceHotPlugEventFunc)
+HGLib_InitDevice = Objdll.HGLib_InitDevice
+HGLib_InitDevice.argtypes = [FuncType, c_void_p]
+HGLib_InitDevice.restype = ctypes.c_int
+Ret = HGLib_InitDevice(cb, 0)
+
+time.sleep(1)
+
+HGLib_GetDeviceNameList = Objdll.HGLib_GetDeviceNameList
+HGLib_GetDeviceNameList.argtypes = []
+HGLib_GetDeviceNameList.restype = POINTER(ctypes.c_char_p)
+DeviceNameList = HGLib_GetDeviceNameList()
+
+HGLib_OpenDevice = Objdll.HGLib_OpenDevice
+HGLib_OpenDevice.argtypes = [ctypes.c_char_p]
+HGLib_OpenDevice.restype = ctypes.c_void_p
+Device = HGLib_OpenDevice(DeviceNameList[0])
+
+HGLib_SetDeviceParam = Objdll.HGLib_SetDeviceParam
+HGLib_SetDeviceParam.argtypes = [ctypes.c_void_p, ctypes.c_ulong, ctypes.c_void_p]
+HGLib_SetDeviceParam.restype = ctypes.c_int
+DevParam = ctypes.c_int(1)
+Ret = HGLib_SetDeviceParam(Device, 1, byref(DevParam))
+
+def HGLibDeviceScanEventFunc(device: c_void_p, event: c_ulong, err: c_int, info: c_char_p, param: c_void_p):
+    print(info)
+    return
+    
+def HGLibDeviceScanImageFunc(device: c_void_p, image: c_void_p, param: c_void_p):
+    ImageParam = HGLibSaveImageParam()
+    ImageParam.size = 20
+    ImageParam.jpegQuality = 100
+    ImageParam.tiffCompression = 0
+    ImageParam.tiffJpegQuality = 0
+    ImageParam.ocr = 0
+    Ret = HGLib_SaveImage(image, c_char_p(b"d:/3.jpg"), pointer(ImageParam))
+    return
+
+FuncType1 = CFUNCTYPE(None, c_void_p, c_ulong, c_int, c_char_p, c_void_p)
+cb1 = FuncType1(HGLibDeviceScanEventFunc)
+FuncType2 = CFUNCTYPE(None, c_void_p, c_void_p, c_void_p)
+cb2 = FuncType2(HGLibDeviceScanImageFunc)
+HGLib_StartDeviceScan = Objdll.HGLib_StartDeviceScan
+HGLib_StartDeviceScan.argtypes = [c_void_p, FuncType1, c_void_p, FuncType2, c_void_p]
+HGLib_StartDeviceScan.restyped = ctypes.c_int
+print("start scan")
+Ret = HGLib_StartDeviceScan(Device, cb1, 0, cb2, 0)
+
+time.sleep(10)