Posts: 14
Threads: 4
Joined: Aug 2018
Dec-29-2018, 09:47 AM
(This post was last modified: Dec-29-2018, 09:49 AM by Leon.)
from ctypes import *
import pythoncom
import datetime
edsdk = windll.edsdk
def AddTime(fname):
now = datetime.datetime.now()
nname = fname[:-4]+'_'+now.isoformat()[:-7].replace(':','-')+fname[-4:]
return nname
class EDSDKError(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value)
def EDErrorMsg(code):
return "EDSDK error code"+hex(code)
def Call(code):
if code!=0:
raise EDSDKError,EDErrorMsg(code)
def Release(ref):
edsdk.EdsRelease(ref)
def GetChildCount(ref):
i = c_int()
Call(edsdk.EdsGetChildCount(ref,byref(i)))
return i.value
def GetChild(ref,number):
c = c_void_p()
Call(edsdk.EdsGetChildAtIndex(ref,number,byref(c)))
return c
kEdsObjectEvent_DirItemRequestTransfer = 0x00000208
kEdsObjectEvent_DirItemCreated = 0x00000204
ObjectHandlerType = WINFUNCTYPE (c_int,c_int,c_void_p,c_void_p)
def ObjectHandler_py(event,object,context):
if event==kEdsObjectEvent_DirItemRequestTransfer:
DownloadImage(object)
return 0
ObjectHandler = ObjectHandlerType(ObjectHandler_py)
kEdsStateEvent_WillSoonShutDown = 0x00000303
StateHandlerType = WINFUNCTYPE (c_int,c_int,c_int,c_void_p)
def StateHandler_py(event,state,context):
if event==kEdsStateEvent_WillSoonShutDown:
print ("cam about to shut off")
Call(edsdk.EdsSendCommand(context,1,0))
return 0
StateHandler = StateHandlerType(StateHandler_py)
PropertyHandlerType = WINFUNCTYPE (c_int,c_int,c_int,c_int,c_void_p)
def PropertyHandler_py(event,property,param,context):
return 0
PropertyHandler = PropertyHandlerType(PropertyHandler_py)
class DirectoryItemInfo(Structure):
_fields_ = [("size", c_int),
("isFolder", c_int),
("groupID",c_int),
("option",c_int),
("szFileName",c_char*256),
("format",c_int)]
WaitingForImage = False
ImageFilename = None
def DownloadImage(image):
dirinfo = DirectoryItemInfo()
Call(edsdk.EdsGetDirectoryItemInfo(image,byref(dirinfo)))
stream = c_void_p()
global ImageFilename
if ImageFilename is None:
print ("Image was taken manually")
ImageFilename = AddTime("IMG.jpg")
print ("Saving as"),ImageFilename
Call(edsdk.EdsCreateFileStream(ImageFilename,1,2,byref(stream)))
Call(edsdk.EdsDownload(image,dirinfo.size,stream))
Call(edsdk.EdsDownloadComplete(image))
Release(stream)
global WaitingForImage
WaitingForImage = False
kEdsSaveTo_Camera = 1
kEdsSaveTo_Host = 2
kEdsSaveTo_Both = kEdsSaveTo_Camera | kEdsSaveTo_Host
kEdsPropID_SaveTo = 0x0000000b
class EdsCapacity(Structure):
_fields_ = [("numberOfFreeClusters", c_int),
("bytesPerSector", c_int),
("reset",c_int)]
class Camera:
def __init__(self,camnum=0):
self.cam = None
l = CameraList()
self.cam = l.GetCam(camnum)
Call(edsdk.EdsSetObjectEventHandler(self.cam,0x200,ObjectHandler,None))
Call(edsdk.EdsSetPropertyEventHandler(self.cam,0x100,PropertyHandler,None))
Call(edsdk.EdsSetCameraStateEventHandler(self.cam,0x300,StateHandler,self.cam))
Call(edsdk.EdsOpenSession(self.cam))
self.SetProperty(kEdsPropID_SaveTo,kEdsSaveTo_Host)
# set large capacity
cap = EdsCapacity(10000000,512,1)
Call(edsdk.EdsSetCapacity(self.cam,cap))
def __del__(self):
if self.cam is not None:
Call(edsdk.EdsCloseSession(self.cam))
Call(Release(self.cam))
def SetProperty(self,property,param):
d = c_int(param)
Call(edsdk.EdsSetPropertyData(self.cam,property,0,4,byref(d)))
def AutoFocus(self):
# kEdsCameraCommand_ShutterButton_OFF = 0x00000000,
# kEdsCameraCommand_ShutterButton_Halfway = 0x00000001,
# kEdsCameraCommand_ShutterButton_Completely = 0x00000003,
# kEdsCameraCommand_ShutterButton_Halfway_NonAF = 0x00010001,
# kEdsCameraCommand_ShutterButton_Completely_NonAF = 0x00010003,
# note that this can fail when AF fails (error code 0x8D01)
self.SendCommand(4,1)
def Shoot(self,fname=None):
# set saving flag
global WaitingForImage
WaitingForImage = True
# set filename
global ImageFilename
if fname is None:
ImageFilename = AddTime("IMG.jpg")
else:
ImageFilename = fname
# note that this can fail when AF fails (error code 0x8D01)
self.SendCommand(0)
# capture succeeded so go on to download image
while WaitingForImage:
pythoncom.PumpWaitingMessages()
return ImageFilename
def KeepOn(self):
# important command - keeps the camera connected when not used
self.SendCommand(1)
def SendCommand(self,command,param=0):
#define kEdsCameraCommand_TakePicture 0x00000000
#define kEdsCameraCommand_ExtendShutDownTimer 0x00000001
#define kEdsCameraCommand_BulbStart 0x00000002
#define kEdsCameraCommand_BulbEnd 0x00000003
#define kEdsCameraCommand_DoEvfAf 0x00000102
#define kEdsCameraCommand_DriveLensEvf 0x00000103
#define kEdsCameraCommand_DoClickWBEvf 0x00000104
#define kEdsCameraCommand_PressShutterButton 0x00000004
Call(edsdk.EdsSendCommand(self.cam,command,param))
class CameraList:
def __init__(self):
self.list = c_void_p(None)
Call(edsdk.EdsGetCameraList(byref(self.list)))
print ("found"),GetChildCount(self.list),"cameras"
def Count(self):
return GetChildCount(self.list)
def GetCam(self,number=0):
print ("get cam")
#if self.Count()<(number+1):
#raise ValueError,"Camera not found, make sure it's on and connected"
return GetChild(self.list,number)
def __del__(self):
Release(self.list)
edsdk.EdsInitializeSDK()
if __name__=="__main__":
pythoncom.CoInitialize()
c = Camera()
from time import sleep
c.Shoot()
sleep(5)
c.AutoFocus()
c.Shoot()
del c
edsdk.EdsTerminateSDK()
sleep(2)
raise EDSDKError,EDErrorMsg(code) This line give the invalid syntax error
Posts: 12,033
Threads: 486
Joined: Sep 2016
for python 3 I believe this should be:
raise Exception(EDSDKError, EDErrorMsg(code))
Posts: 14
Threads: 4
Joined: Aug 2018
Dec-29-2018, 05:27 PM
(This post was last modified: Dec-29-2018, 11:10 PM by Larz60+.)
Thank you.
I was forgotten that it was written in Python 2.
The new problem is:
I can make a picture only when it download the image to the pc i get this error:
Error: Traceback (most recent call last):
File "_ctypes/callbacks.c", line 234, in 'calling callback function'
File "C:\Users\Leond\Desktop\printmap\EDSDKv0306-1W\EDSDKv0306-1W\Windows\EDSDK_64\Dll\canonsdk.py", line 48, in ObjectHandler_py
DownloadImage(object)
File "C:\Users\Leond\Desktop\printmap\EDSDKv0306-1W\EDSDKv0306-1W\Windows\EDSDK_64\Dll\canonsdk.py", line 83, in DownloadImage
Call(edsdk.EdsGetDirectoryItemInfo(image,byref(dirinfo)))
ctypes.ArgumentError: argument 1: <class 'OverflowError'>: int too long to convert
Posts: 12,033
Threads: 486
Joined: Sep 2016
I can only help with basic connectivity issues.
I know nothing about windll.edsdk.
Googling finds: https://sourceforge.net/projects/pycanon/
Can't find much else, you might have to look at https://github.com/andrewrk/pyedsdk
(modified last 7 years ago) and convert to python 3
Posts: 14
Threads: 4
Joined: Aug 2018
Dec-31-2018, 10:41 AM
(This post was last modified: Dec-31-2018, 10:41 AM by Leon.)
It was a 64 bit versus 32 bit issue.
With python 32 bit it works.
Only there is another error now.
Error: Traceback (most recent call last):
File "_ctypes/callbacks.c", line 232, in 'calling callback function'
File "C:\Users\Leond\Desktop\printmap\EDSDKv0306-1W\EDSDKv0306-1W\Windows\EDSDK\Dll\canonsdk.py", line 48, in ObjectHandler_py
DownloadImage(object)
File "C:\Users\Leond\Desktop\printmap\EDSDKv0306-1W\EDSDKv0306-1W\Windows\EDSDK\Dll\canonsdk.py", line 92, in DownloadImage
Call(edsdk.EdsDownload(image,dirinfo.size,stream))
ValueError: Procedure probably called with not enough arguments (4 bytes missing)
from ctypes import *
import pythoncom
import datetime
edsdk = windll.edsdk
def AddTime(fname):
now = datetime.datetime.now()
nname = fname[:-4]+'_'+now.isoformat()[:-7].replace(':','-')+fname[-4:]
return nname
class EDSDKError(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value)
def EDErrorMsg(code):
return "EDSDK error code"+hex(code)
def Call(code):
if code!=0:
raise Exception(EDSDKError, EDErrorMsg(code))
def Release(ref):
edsdk.EdsRelease(ref)
def GetChildCount(ref):
i = c_int()
Call(edsdk.EdsGetChildCount(ref,byref(i)))
return i.value
def GetChild(ref,number):
c = c_void_p()
Call(edsdk.EdsGetChildAtIndex(ref,number,byref(c)))
return c
kEdsObjectEvent_DirItemRequestTransfer = 0x00000208
kEdsObjectEvent_DirItemCreated = 0x00000204
ObjectHandlerType = WINFUNCTYPE (c_int,c_int,c_void_p,c_void_p)
def ObjectHandler_py(event,object,context):
if event==kEdsObjectEvent_DirItemRequestTransfer:
DownloadImage(object)
return 0
ObjectHandler = ObjectHandlerType(ObjectHandler_py)
kEdsStateEvent_WillSoonShutDown = 0x00000303
StateHandlerType = WINFUNCTYPE (c_int,c_int,c_int,c_void_p)
def StateHandler_py(event,state,context):
if event==kEdsStateEvent_WillSoonShutDown:
print ("cam about to shut off")
Call(edsdk.EdsSendCommand(context,1,0))
return 0
StateHandler = StateHandlerType(StateHandler_py)
PropertyHandlerType = WINFUNCTYPE (c_int,c_int,c_int,c_int,c_void_p)
def PropertyHandler_py(event,property,param,context):
return 0
PropertyHandler = PropertyHandlerType(PropertyHandler_py)
class DirectoryItemInfo(Structure):
_fields_ = [("size", c_int),
("isFolder", c_int),
("groupID",c_int),
("option",c_int),
("szFileName",c_char*256),
("format",c_int)]
WaitingForImage = False
ImageFilename = None
def DownloadImage(image):
dirinfo = DirectoryItemInfo()
Call(edsdk.EdsGetDirectoryItemInfo(image,byref(dirinfo)))
stream = c_void_p()
global ImageFilename
if ImageFilename is None:
print ("Image was taken manually")
ImageFilename = AddTime("IMG.jpg")
print ("Saving as"),ImageFilename
Call(edsdk.EdsCreateFileStream(ImageFilename,1,2,byref(stream)))
Call(edsdk.EdsDownload(image,dirinfo.size,stream))
Call(edsdk.EdsDownloadComplete(image))
Release(stream)
global WaitingForImage
WaitingForImage = False
kEdsSaveTo_Camera = 1
kEdsSaveTo_Host = 2
kEdsSaveTo_Both = kEdsSaveTo_Camera | kEdsSaveTo_Host
kEdsPropID_SaveTo = 0x0000000b
class EdsCapacity(Structure):
_fields_ = [("numberOfFreeClusters", c_int),
("bytesPerSector", c_int),
("reset",c_int)]
class Camera:
def __init__(self,camnum=0):
self.cam = None
l = CameraList()
self.cam = l.GetCam(camnum)
Call(edsdk.EdsSetObjectEventHandler(self.cam,0x200,ObjectHandler,None))
Call(edsdk.EdsSetPropertyEventHandler(self.cam,0x100,PropertyHandler,None))
Call(edsdk.EdsSetCameraStateEventHandler(self.cam,0x300,StateHandler,self.cam))
Call(edsdk.EdsOpenSession(self.cam))
self.SetProperty(kEdsPropID_SaveTo,kEdsSaveTo_Host)
#set large capacity
cap = EdsCapacity(10000000,512,1)
Call(edsdk.EdsSetCapacity(self.cam,cap))
def __del__(self):
if self.cam is not None:
Call(edsdk.EdsCloseSession(self.cam))
Call(Release(self.cam))
def SetProperty(self,property,param):
d = c_int(param)
Call(edsdk.EdsSetPropertyData(self.cam,property,0,4,byref(d)))
def AutoFocus(self):
# kEdsCameraCommand_ShutterButton_OFF = 0x00000000,
# kEdsCameraCommand_ShutterButton_Halfway = 0x00000001,
# kEdsCameraCommand_ShutterButton_Completely = 0x00000003,
# kEdsCameraCommand_ShutterButton_Halfway_NonAF = 0x00010001,
# kEdsCameraCommand_ShutterButton_Completely_NonAF = 0x00010003,
# note that this can fail when AF fails (error code 0x8D01)
self.SendCommand(4,1)
def Shoot(self,fname=None):
# set saving flag
global WaitingForImage
WaitingForImage = True
# set filename
global ImageFilename
if fname is None:
ImageFilename = AddTime("IMG.jpg")
else:
ImageFilename = fname
# note that this can fail when AF fails (error code 0x8D01)
self.SendCommand(0)
# capture succeeded so go on to download image
while WaitingForImage:
pythoncom.PumpWaitingMessages()
return ImageFilename
def KeepOn(self):
# important command - keeps the camera connected when not used
self.SendCommand(1)
def SendCommand(self,command,param=0):
#define kEdsCameraCommand_TakePicture 0x00000000
#define kEdsCameraCommand_ExtendShutDownTimer 0x00000001
#define kEdsCameraCommand_BulbStart 0x00000002
#define kEdsCameraCommand_BulbEnd 0x00000003
#define kEdsCameraCommand_DoEvfAf 0x00000102
#define kEdsCameraCommand_DriveLensEvf 0x00000103
#define kEdsCameraCommand_DoClickWBEvf 0x00000104
#define kEdsCameraCommand_PressShutterButton 0x00000004
Call(edsdk.EdsSendCommand(self.cam,command,param))
class CameraList:
def __init__(self):
self.list = c_void_p(None)
Call(edsdk.EdsGetCameraList(byref(self.list)))
print ("found"),GetChildCount(self.list),"cameras"
def Count(self):
return GetChildCount(self.list)
def GetCam(self,number=0):
print ("get cam")
#if self.Count()<(number+1):
#raise ValueError,"Camera not found, make sure it's on and connected"
return GetChild(self.list,number)
def __del__(self):
Release(self.list)
edsdk.EdsInitializeSDK()
if __name__=="__main__":
pythoncom.CoInitialize()
c = Camera()
from time import sleep
c.Shoot()
#sleep(5)
#c.AutoFocus()
#c.Shoot()
del c
edsdk.EdsTerminateSDK()
sleep(2)Whats wrong ??
Posts: 1
Threads: 0
Joined: Nov 2019
@ Leon, I know this is a bit old at this point, but have you figured out how to solve this? I am having the same error pop up, and I'm stuck on how to fix it.
Posts: 12,033
Threads: 486
Joined: Sep 2016
Quote:I know this is a bit old at this point
Last visit was July, this post almost 1 year old, very unlikely it will be read by OP.
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