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Lexmark Pro205 - WIA: Failed to get scanner properties
- Windows 10 x64
- Lexmark Pro205
- scan via Windows tools without problems
INFO paperwork.frontend.diag ====== START OF SCANNER INFO ======
WARNING pyinsane2.wia.abstract Failed to access scanner ('{6BDD1FC6-810F-11D0-BEC7-08002BE2092F}\\0000', 'Lexmark Pro200-S500 Series') : WIA: Failed to get scanner properties
ERROR pyinsane2.wia.abstract WIA: Failed to get scanner properties
Traceback (most recent call last):
File "site-packages\pyinsane2-2.0.10-py3.4-win-amd64.egg\pyinsane2\wia\abstract.py", line 567, in get_devices
File "site-packages\pyinsane2-2.0.10-py3.4-win-amd64.egg\pyinsane2\wia\abstract.py", line 420, in __init__
File "site-packages\pyinsane2-2.0.10-py3.4-win-amd64.egg\pyinsane2\wia\abstract.py", line 470, in reload_options
File "site-packages\pyinsane2-2.0.10-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 112, in get_properties
File "site-packages\pyinsane2-2.0.10-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 34, in wait
File "site-packages\pyinsane2-2.0.10-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 39, in do
File "site-packages\pyinsane2-2.0.10-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 107, in _get_properties
pyinsane2.wia.rawapi.WIAException: WIA: Failed to get scanner properties
INFO paperwork.frontend.diag 0 scanners found
INFO paperwork.frontend.diag ====== END OF SCANNER INFORMATIONS ======
- the following code works quite well with standard python
# conda install pywin32
import os
from win32com.client import Dispatch
# List all available devices
wia_dev_manager = Dispatch("WIA.DeviceManager")
for ix, device in enumerate(wia_dev_manager.DeviceInfos):
print(ix,"|",device.Properties("Name").Value,"|",device.DeviceID)
#
# 0 | Lexmark Pro200-S500 Series | {6BDD1FC6-810F-11D0-BEC7-08002BE2092F}\0000
#
# Select a device per gui if there are more than one device
wia = Dispatch("WIA.CommonDialog")
dev = wia.ShowSelectDevice()
dev.Properties("Name").Value
# 'Lexmark Pro200-S500 Series'
# List Items of device
for ix, item in enumerate(dev.Items):
print(ix,item.ItemID)
# 0 0000\Root\Flatbed
# 1 0000\Root\Feeder
# Select per number
scanner = dev.Items[1]
scanner.ItemID
# '0000\\Root\\Flatbed'
# Show all properties
for ix,p in enumerate (scanner.Properties):
print(f"{ix:3} {p.PropertyID:5} {p.Name:30} {p.Value}")
# 0 4098 Item Name Feeder
# 1 4099 Full Item Name 0000\Root\Feeder
# 2 4101 Item Flags 67
# 3 4120 Color Profile Name sRGB Color Space Profile.icm
# 4 3076 Horizontal Sheet Feed Size 8500
# 5 3077 Vertical Sheet Feed Size 14000
# 6 3078 Sheet Feeder Registration 0
# 7 3096 Pages 1
# 8 3088 Document Handling Select 2
# 9 3090 Horizontal Optical Resolution 600
# 10 3091 Vertical Optical Resolution 600
# 11 3103 Show preview control 0
# 12 3100 Preview 0
# 13 4102 Access Rights 2
# 14 4116 Item Size 0
# 15 4106 Format {B96B3CAA-0728-11D3-9D7B-0000F81EF32E}
# 16 4105 Preferred Format {B96B3CAA-0728-11D3-9D7B-0000F81EF32E}
# 17 4108 Media Type 128
# 18 4118 Buffer Size 65536
# 19 4103 Data Type 2
# 20 4104 Bits Per Pixel 8
# 21 4110 Bits Per Channel 8
# 22 4109 Channels Per Pixel 1
# 23 4107 Compression 0
# 24 6147 Horizontal Resolution 75
# 25 6148 Vertical Resolution 75
# 26 6151 Horizontal Extent 637
# 27 6152 Vertical Extent 1050
# 28 6149 Horizontal Start Position 0
# 29 6150 Vertical Start Position 0
# 30 4112 Pixels Per Line 637
# 31 4113 Bytes Per Line 640
# 32 4114 Number of Lines 1050
# 33 6154 Brightness 0
# 34 6155 Contrast 0
# 35 6146 Current Intent 0
# 36 6159 Threshold 128
# 37 6153 Photometric Interpretation 0
# 38 4111 Planar 0
# 39 6161 Lamp Warm up Time 1000
# 40 4123 Filename extension BMP
# Set resolution
scanner.Properties("Vertical Resolution").Value = 300
scanner.Properties("Horizontal Resolution").Value = 300
WIA_IMG_FORMAT_PNG = "{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}"
image=scanner.Transfer(WIA_IMG_FORMAT_PNG)
image.SaveFile("c:/temp/scan.png")
- Documentation: https://msdn.microsoft.com/en-us/library/windows/desktop/ms630490(v=vs.85).aspx
Does this help?
Actually it does. Because it proves your scanner is supported by WIA and therefore there is a bug in Pyinsane (or a lack of workaround, depending on your scanner drivers ;-). I'm working on a diagnostic program (IronScanner). It's close to be ready. It should help figuring out what is failing here and test possible fixes.
The test program is ready: https://openpaper.work/en/scanner_db/#contribute . Can you give it a try please ? It will do a test scan, generate a report, and automatically upload it to https://openpaper.work/ .
INFO 2018-03-06 20:35:10,691 ironscanner.main Looking for scanners ...
INFO 2018-03-06 20:35:10,693 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L132): WIA->get_devices()
INFO 2018-03-06 20:35:10,699 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L209): Opening device({6BDD1FC6-810F-11D0-BEC7-08002BE2092F}\0000)
INFO 2018-03-06 20:35:10,788 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L230): Device({6BDD1FC6-810F-11D0-BEC7-08002BE2092F}\0000) opened
INFO 2018-03-06 20:35:10,789 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L264): Getting sources
INFO 2018-03-06 20:35:10,791 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L326): Got source [0000\Root\Flatbed] (assuming flatbed)
INFO 2018-03-06 20:35:10,792 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L323): Got source [0000\Root\Feeder] (feeder)
WARNING 2018-03-06 20:35:10,792 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L286): get_sources(): enum_item->next() failed
WARNING 2018-03-06 20:35:10,792 pyinsane2.wia.rawapi NULL NULL NULL !!
INFO 2018-03-06 20:35:10,792 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L339): 2 sources found
INFO 2018-03-06 20:35:10,793 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L395): Getting Properties
WARNING 2018-03-06 20:35:10,797 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L416): WiaPropertyStorage->ReadMultiple() failed
WARNING 2018-03-06 20:35:10,797 pyinsane2.wia.rawapi pyinsane2/wia/rawapi.cpp(L417): HResult error code 0x80004001: Nicht implementiert
ERROR 2018-03-06 20:35:10,798 pyinsane2.wia.rawapi Unexpected exception
Traceback (most recent call last):
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 58, in do
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 130, in _get_properties
pyinsane2.wia.rawapi.WIAException: WIA: Failed to get scanner properties
WARNING 2018-03-06 20:35:10,799 pyinsane2.wia.abstract Failed to access scanner ('{6BDD1FC6-810F-11D0-BEC7-08002BE2092F}\\0000', 'Lexmark Pro200-S500 Series') : WIA: Failed to get scanner properties
ERROR 2018-03-06 20:35:10,801 pyinsane2.wia.abstract WIA: Failed to get scanner properties
Traceback (most recent call last):
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\abstract.py", line 626, in get_devices
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\abstract.py", line 458, in __init__
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\abstract.py", line 515, in reload_options
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 135, in get_properties
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 50, in wait
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 58, in do
File "site-packages\pyinsane2-2.0.12-py3.4-win-amd64.egg\pyinsane2\wia\rawapi.py", line 130, in _get_properties
pyinsane2.wia.rawapi.WIAException: WIA: Failed to get scanner properties
INFO 2018-03-06 20:35:10,803 ironscanner.main 0 scanners found
Does it really require lowlevel pyinsane2/wia/rawapi.cpp? What are the reasons not using win32com.client and Dispatch?
Hm, ok, this is a tricky one.
Obviously, you can access WIA properties using the WIA automation layer. Which I'm not using ... because it has a nasty limitation: I haven't found a way to get the image on-the-fly during the scan with it.
This is why I'm using the low-level WIA API: I can pass it a IStream object and get the stream as it goes (if the driver supports it .. some just write in the stream once the scan has been done).
However, in your case, using the low-level WIA API to access properties returns HResult error code 0x80004001: Nicht implementiert ... which is obviously a problem.
I think this is going to wait.
I'm going to rewrite Pyinsane anyway (in pure C this time --> libinsane). One the goal will be to handle multiple APIs (WIA, TWAIN, etc). This way, I will be able to use the low-level API to get the stream, and if it does not work, fall-back on the WIA automation layer (which will mean not getting the scan on-the-fly, but as I said, this is already a limitation of a bunch of drivers anyway).
Anyway, I must thank you. I'm glad you provided me with this information before I start designing the new library, because this will clearly impact its design.
Thank you for the detailed explanation. I was almost expecting something like this. I am happy to help with further tests.