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)