C / C++ / MFC

ISamplerGrabber future ??

28-Mar-13 22:41

There is nothing convoluted about it, it is merely trying to allow for different cases, whether the source parameters are in Unicode or ASCII.

Use the best guess

Vaclav_26-Mar-13 8:01

Vaclav_

26-Mar-13 8:01

OK , I got the DirectShow to "play" an image from a camera in right splitter view of my MFC application. Now I need to capture a single frame and process it in differet splitter pane.
So if I can grab a frame , convert it to bitmap and than to OpenCV image I'be all set.
AFter finding ISamplerGrabber I also found this nice note included in MS documentation about ISampleGrabber.
Are these MS guys for real?
I sure hate to use something they do not support in next month.

Note [Deprecated. This API may be removed from future releases of Windows.]

Richard MacCutchan26-Mar-13 9:17

26-Mar-13 9:17

Vaclav_Sal wrote:
Deprecated. This API may be removed from future releases of Windows.

A fairly common note in the MSDN documentation. It's just warning you that this may not be the best option.

Use the best guess

image processing toolkits | batch image processing

C^hris L^osinger27-Mar-13 5:03

C^hris L^osinger

27-Mar-13 5:03

and really, it's implied just by virtue of being an MS product.

Richard MacCutchan27-Mar-13 5:15

27-Mar-13 5:15

Use the best guess

Joe Woodbury26-Mar-13 9:26

Joe Woodbury

26-Mar-13 9:26

Your posts made me curious. After some hunting around, I discovered that the new multimedia thing is... "Microsoft Media Foundation", which looks like in improved version of DirectShow. It's Windows Vista and later. (If I get crazy enough, I may rework an interactive multimedia product I created in the 90s using VFW to use this.)

SoMad26-Mar-13 11:57

SoMad

26-Mar-13 11:57

It is true that Microsoft has moved on and left DirectShow behind. I have not gone there because so much of what I do still has to work on Windows XP.

I don't see a lot of articles on the subject, but this one was posted about two weeks ago: Capturing of video from web-camera on Windows 7 and 8 by Media Foundation[^]. To me, the most interesting thing about this article is how he decided to go with Media Foundation because of DirectShow problems on Windows 8.

Soren Madsen

"When you don't know what you're doing it's best to do it quickly" - Jase #DuckDynasty

Vaclav_28-Mar-13 12:14

Vaclav_

28-Mar-13 12:14

Soren,
thanks for the link.
At this point I am pretty much stuck with DirectShow and would like to finish it.
After breif scan of the article it sure looks as people who like to do something serious;me excluded, I am doing this for "fun"; with video feel pretty much same about convoluted approach by MS.
It reminds me how they struggled with Windows form get-go ( who remembers Window ME?) and IE went pretty much same.
Cheers Vaclav

Turbo code implementation in C++

SoMad28-Mar-13 20:34

SoMad

28-Mar-13 20:34

Vaclav,

Yes, I know you are working with VC6. I really just posted my comment and the link to that article as a response to Joe Woodbury mentioning the new Microsoft Media Foundation technology. I was not trying to get you to pursue it at this point.

Soren Madsen

"When you don't know what you're doing it's best to do it quickly" - Jase #DuckDynasty

Manoj739025-Mar-13 20:50

Manoj7390

25-Mar-13 20:50

Hi everyone, I am trying to implement turbo encoder, i am not getting how to write the code for D-Flipflop because i am not getting how to access a single bit in C++. please help me out.. Smile | :)

Re: Turbo code implementation in C++

Jochen Arndt25-Mar-13 22:09

Jochen Arndt

25-Mar-13 22:09

In C/C++ single bits are acessed by using logical operators (and: &, or: |, xor: ^, not: ~) with masks with only one bit set. Additional bit operators are the shift left and right operators. An example would be counting the number of bits set in a variable:

C++

unsigned CountBits(unsigned nVal)
{
    unsigned nCount = 0;
    while (nVal)
    {
        // test if lowest bit is set
        if (nVal & 1)
            ++nCount;
        // shift value right by one bit
        nVal >>= 1;
    }
    return nCount;
}

Re: Turbo code implementation in C++

vikramlinux25-Mar-13 22:39

vikramlinux

25-Mar-13 22:39

Bit Field facility is available in C++ as well.

http://publib.boulder.ibm.com/infocenter/macxhelp/v6v81/index.jsp?topic=%2Fcom.ibm.vacpp6m.doc%2Flanguage%2Fref%2Fclrc03defbitf.htm[^]

Re: Turbo code implementation in C++

vikramlinux25-Mar-13 23:17

vikramlinux

25-Mar-13 23:17

~ Or this may help.

http://stackoverflow.com/questions/8054032/how-to-check-if-a-particular-bit-is-set-in-c-sharp[^]

How can i create a project that it has the same name with an existing project

November 201325-Mar-13 5:33

Re: How can i create a project that it has the same name with an existing project

25-Mar-13 5:33

i found a method on the internet.
In the New Project dialog box select "New" and select "Custom Appwizard", enter the new project name, click the [OK] button. "Custom 1 of 2 AppWizardStep" dialog box appeared, and then select "An existing Project" item, click the [Next] button. "Custom 2 of 2 AppWizardStep" dialog box appeared, select an existing project file name, and click the [Finish] button. After the compiler generates an identical to an existing project but can be renamed engineering AppWizard.
however, when i used this method to make it,and after i compiled it, an error is coming:

--------------------Configuration: Luoyang - Win32 Pseudo-Debug--------------------
Compiling resources...
Compiling...
StdAfx.cpp
Compiling...
Debug.cpp
Luoyang.cpp
LuoyangAw.cpp
Generating Code...
Linking...
LINK : error : Internal error during ReadSymbolTable
ExceptionCode = C0000005
ExceptionFlags = 00000000
ExceptionAddress = 004623F2
NumberParameters = 00000002
ExceptionInformation[ 0] = 00000000
ExceptionInformation[ 1] = 00000008
CONTEXT:
Eax = 3FFFAFEC Esp = 0012E6A0
Ebx = 00000002 Ebp = 005D1B3A
Ecx = 3FFFAFEC Esi = 3FFFB3E0
Edx = 00000000 Edi = 3FFFB3E0
Eip = 004623F2 EFlags = 00010246
SegCs = 0000001B SegDs = 00000023
SegSs = 00000023 SegEs = 00000023
SegFs = 0000003B SegGs = 00000000
Dr0 = 0012E6A0 Dr3 = 00000002
Dr1 = 005D1B3A Dr6 = 3FFFAFEC
Dr2 = 00000000 Dr7 = 00000000
Error executing link.exe.
Tool execution canceled by user.
^^^^^^^
i don't know weather i make myself clear. because my English is very poor, but i really need your help.

David Crow25-Mar-13 6:17

David Crow

25-Mar-13 6:17

What version of VS are you using?

November 2013 wrote:
In the New Project dialog box select "New" and select "Custom Appwizard"...

What category is this under?

This sounds more like a Visual Studio issue rather than a C/C++/MFC issue.

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modified 26-Mar-13 10:10am.

Re: How can i create a project that it has the same name with an existing project

November 201326-Mar-13 2:56

Re: How can i create a project that it has the same name with an existing project

26-Mar-13 2:56

i did it with Microsoft Visual C++ 6.0.

Richard MacCutchan25-Mar-13 7:32

Re: How can i create a project that it has the same name with an existing project

25-Mar-13 7:32

Check this white paper[^].

Use the best guess

November 201326-Mar-13 4:03

Re: How can i create a project that it has the same name with an existing project

26-Mar-13 4:03

After i read it, i still can't find my fault.In my opinion,My way is the same with this white paper.I followed it step by step.
When i compiled it, some errors occurred.Like i mentioned above.
I wish you could give me some solutions.
thank you.

David Crow26-Mar-13 4:13

David Crow

26-Mar-13 4:13

Do you get those errors with other projects, too, or is it just with Custom AppWizard projects?

Does it happen in both Debug and Release mode?

Have you tried this?

Re: How can i create a project that it has the same name with an existing project

November 201326-Mar-13 4:18

Re: How can i create a project that it has the same name with an existing project

26-Mar-13 4:18

These errors only occurred when i created a Custom AppWizard projects by selecting an existing project.

November 201326-Mar-13 20:13

Re: How can i create a project that it has the same name with an existing project

26-Mar-13 20:13

yes，This situation still occurs.

Richard MacCutchan26-Mar-13 6:39

Re: How can i create a project that it has the same name with an existing project

26-Mar-13 6:39

November 2013 wrote:
I wish you could give me some solutions.

So do I, but with the information you have provided it is impossible. This looks more like an internal error with the product, in which case you should be reporting it to Microsoft.

Use the best guess

November 201326-Mar-13 20:11