[Bug 35780] New: unhandled exception; qcap; while running cura.py

http://bugs.winehq.org/show_bug.cgi?id=35780

Bug ID: 35780
           Summary: unhandled exception; qcap; while running cura.py
           Product: Wine
           Version: 1.6.1
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]

Created attachment 47775
  --> http://bugs.winehq.org/attachment.cgi?id=47775
backtrace file from wine at crash

Running Cura (for 3D printing - developed in Python).

Cura is running very well under wine 1.6; manipulating models in 3D, slicing
the 
models into GCode, saving the GCode to disk, etc.

Linux detects the attachment of the USB cable to the printer controller
(Marlin) at 'ttyUSB0', and Cura also acknowledges the connection has been made
- it changes a button of the GUI from 'slice' to 'print'.

When I click on 'print' a window is opened and at the same time another is
opened from wine reporting a crash (backtrace attached).

I have searched for something called 'qcap' which, to me, appears to be the
last code being run - but I can find nothing on it.

I am running Cura 14.01 from website:  http://software.ultimaker.com/

James Luscher

[Bug 35780] unhandled exception; qcap; while running cura.py

http://bugs.winehq.org/show_bug.cgi?id=35780

--- Comment #1 from James Luscher  ---
More research indicated that the crash was related to accessing the webcam.

I have an image (.png) of the details here:
http://ubuntuone.com/26EJrLnsjM9NxS4FbbrJIq

The developer has responded that the next revision of Cura (14.02) is going to
remove access to the webcam.

I will try the new version ASAP, which will hopefully, let me proceed with
running the program - though it doesn't mean that any problem has been fixed
:-(

James

[Bug 35780] unhandled exception; qcap; while running cura.py

https://bugs.winehq.org/show_bug.cgi?id=35780

Austin English  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |download
                URL|                            |software.ultimaker.com
           Severity|blocker                     |normal

--- Comment #2 from Austin English  ---
Not a blocker. Please retry in 1.7.14.

[Bug 35780] unhandled exception; qcap; while running cura.py

http://bugs.winehq.org/show_bug.cgi?id=35780

--- Comment #3 from James Luscher  ---
Further research shows Cura makes use of a Python VideoCapture module for
windows documented at:  http://videocapture.sourceforge.net/

The comments for videocapture refer to this Windows tech:

"The low-level module uses DirectShow which is already included in DirectX 8.0
and higher."

(perhaps this is useful?)

[Bug 35780] unhandled exception; qcap; while running cura.py

https://bugs.winehq.org/show_bug.cgi?id=35780

Michael Stefaniuc  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]
          Component|-unknown                    |quartz

[Bug 35780] unhandled exception; qcap; while running cura.py

https://bugs.winehq.org/show_bug.cgi?id=35780

Alex Henrie  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]
           Keywords|                            |hardware

[Bug 35780] unhandled exception; qcap; while running cura.py

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=35780

Damjan Jovanovic  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #4 from Damjan Jovanovic  ---
There are problems in Python's VideoCapture module
(http://videocapture.sourceforge.net/).

It attempts to use the camera as the initial filter and a sample grabber as the
intermediate filter, and expects the sample grabber to connect to the default
renderer:

hr = self->ob_pBuilder->RenderStream(
            &PIN_CATEGORY_CAPTURE, // changed from ..._PREVIEW to ..._CAPTURE
            &MEDIATYPE_Video,
            self->ob_pSrc, // src
            pF,            // via
            NULL           // dest ; or pNullRenderer
        );
    if (FAILED(hr))
    {
        PyErr_SetString(VidcapError, "Capture Graph could not be created.");
        cleanup(self);
        return FALSE;
    }

(self->ob_pSrc = camera, pF = sample grabber)

This fails on Wine, in all 3 of the examples that come with VideoCapture-0.9.5.
That error is printed out:

Traceback (most recent call last):
  File "exa1_snapshot.py", line 3, in <module>
    cam = Device()
  File "C:\Python27\lib\VideoCapture.py", line 49, in __init__
    self.dev = vidcap.new_Dev(devnum, showVideoWindow)
vidcap.Error: Capture Graph could not be created.

[Bug 35780] unhandled exception; qcap; while running cura.py

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=35780

Zebediah Figura  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #5 from Zebediah Figura  ---
(In reply to Damjan Jovanovic from comment #4)
> There are problems in Python's VideoCapture module
> (http://videocapture.sourceforge.net/).
>
> It attempts to use the camera as the initial filter and a sample grabber as
> the intermediate filter, and expects the sample grabber to connect to the
> default renderer:

It should be able to; I accidentally broke the sample grabber in some ways
recently. I have some patches.

[Bug 35780] unhandled exception; qcap; while running cura.py

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=35780

--- Comment #6 from Damjan Jovanovic  ---
It works now.

Installation process:

1. Download python-2.7.17.msi and install it.
2. Download PIL-1.1.7.win32-py2.7.exe from
https://www.pythonware.com/products/pil/ and run/install it.
3. Download VideoCapture-0.9-5.zip from http://videocapture.sourceforge.net
3.1 Unzip it
3.2 cd Python27/
3.3 cp Lib/* ~/.wine-py-vidcap/drive_c/Python27/Lib/
3.4 cp DLLs/vidcap.pyd ~/.wine-py-vidcap/drive_c/Python27/DLLs/
3.5 cd ../Examples
3.6 wine python exa1_snapshot.py
(working)
3.7 wine python exa2_show-possibilities.py
(working)
3.8 wine python exa3_observer.py
(broken)

The exa3_observer.py fails because it tries to get property pages which Wine
doesn't support:

0009:fixme:qcap:fnCaptureGraphBuilder2_RenderStream
(0x5d5f78/0x5d5f78)->({fb6c4281-0353-11d1-905f-0000c0cc16ba},
{73646976-0000-0010-8000-00aa00389b71}, 0x5d7d30, 0x5d8008, 0x0) semi-stub!
0009:fixme:qcap:KSP_Get () Not adding a pin with PIN_CATEGORY_PREVIEW
0009:fixme:qcap:KSP_Get () Not adding a pin with PIN_CATEGORY_PREVIEW
0009:fixme:qcap:capture_query_accept (0x5d875c) stub
0009:fixme:qcap:fnCaptureGraphBuilder2_FindInterface
(0x5d5f78/0x5d5f78)->({fb6c4281-0353-11d1-905f-0000c0cc16ba},
{73766169-0000-0010-8000-00aa00389b71}, 0x5d7d30,
{c6e13340-30ac-11d0-a18c-00a0c9118956}, 0x40fba0) - workaround stub!
0009:fixme:qcap:fnCaptureGraphBuilder2_FindInterface
(0x5d5f78/0x5d5f78)->({fb6c4281-0353-11d1-905f-0000c0cc16ba},
{73646976-0000-0010-8000-00aa00389b71}, 0x5d7d30,
{c6e13340-30ac-11d0-a18c-00a0c9118956}, 0x40fba0) - workaround stub!
Traceback (most recent call last):
  File "exa3_observer.py", line 16, in <module>
    cam.displayCapturePinProperties()
  File "C:\Python27\lib\VideoCapture.py", line 82, in
displayCapturePinProperties
    self.dev.displaycapturepinproperties()
vidcap.Error: Querying the capture pin for its property pages failed.

But that's not a crash. We cannot reproduce the originally reported bug with
the example code.

[Bug 35780] unhandled exception; qcap; while running cura.py

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=35780

--- Comment #7 from Damjan Jovanovic  ---
Cura is open-source (AGPLv3), and the source code can be downloaded from:
https://github.com/Ultimaker/Cura/archive/14.01.zip
To build it, however, is a mission.

Can you please test whether this is still an issue with Wine 5.0-rc2 or later?