C / C++ / MFC Discussion Boards

Re: Export Template Issue

Maxwell Chen4-Feb-08 18:33

Maxwell Chen

4-Feb-08 18:33

The answer at MSDN Forum[^].

Maxwell Chen

Creating DirectShow Filter

Andy Rama4-Feb-08 1:54

Andy Rama

4-Feb-08 1:54

Hi to all,

Do anyone know how to create DirectShow Filter in VC++ (6.0 or .Net)?
Or Is there any link/e-book guiding to create DirectShow Filter?

I tried to get more information throught google. But it was not sufficient.

Please help me.

Thanks in advance.

Regards,
Aniket

Re: Creating DirectShow Filter

CPallini4-Feb-08 2:23

CPallini

4-Feb-08 2:23

Aniket Salunkhe wrote:
I tried to get more information throught google. But it was not sufficient.

And what about CP article's search engine http://www.codeproject.com/info/search.aspx?artkw=DirectShow+Filter&sbo=kw[^]?

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

Re: Creating DirectShow Filter

Rajkumar R4-Feb-08 2:55

Rajkumar R

4-Feb-08 2:55

And what about SDKs, if you are writting directshow filters, u might have installed DirectXSDK or Platform SDK, the SDK documentation is a huge source of Documentation and samples of DSHOW filters. The complete source code of DShow Baseclasses is also available, what else u need

Re: Creating DirectShow Filter

Andy Rama4-Feb-08 20:47

Andy Rama

4-Feb-08 20:47

Hi,

Thanks for your reply.

All information provided in SDK documents or in Codeproject Articles is regarding how to use DirectShow Filters or direct desinging of filters.

But no one has provided the detailed information.
Information that want is,
1. How to start desinging a DirectShow Filter in VC++6.0 or VC++.Net IDE?
2. Different types of filters & their implementation differnece.
3. Adding Property Pages & own Interfaces to filter.

I want to design filter which accepts MPEG-2/MPEG-4 Transport Stream. It will store data in a FIFO as it receives the data. According to status Run/Pause/Stop of filter, a thread will be in running/pause/stop state.

Can u guide me for this?

Thanks & Regards,
Aniket A. Salunkhe

Re: Creating DirectShow Filter

mTahir29-Feb-08 0:32

mTahir

29-Feb-08 0:32

Hi,

Below is the link to a doc which can be a good starting point for understanding DirectShow filter API's

http://www.cs.ucf.edu/~lspencer/vid_app.pdf[^]

Regards,
Tahir

MFC 8.0

subramanyeswari4-Feb-08 0:37

subramanyeswari

4-Feb-08 0:37

I want to know all the classes that are part of MFC 8.0. How will i know it.

Regards

Re: MFC 8.0

Rajesh R Subramanian4-Feb-08 0:52

Rajesh R Subramanian

4-Feb-08 0:52

subramanyeswari wrote:
I want to know all the classes that are part of MFC 8.0. How will i know it.

That information is hidden here[^]

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: MFC 8.0

subramanyeswari4-Feb-08 1:20

subramanyeswari

4-Feb-08 1:20

thank you

Re: MFC 8.0

jhwurmbach4-Feb-08 2:37

jhwurmbach

4-Feb-08 2:37

Ah! Those bastards hid it in the Documentation! How is one supposed to know that!

Let's think the unthinkable, let's do the undoable, let's prepare to grapple with the ineffable itself, and see if we may not eff it after all.
Douglas Adams, "Dirk Gently's Holistic Detective Agency"

Re: MFC 8.0

Rajesh R Subramanian4-Feb-08 2:55

Rajesh R Subramanian

4-Feb-08 2:55

Probably an IQ test for the developers to reach the documentation? Laugh | :laugh:

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Threads Handling

Member 41168754-Feb-08 0:27

Member 4116875

4-Feb-08 0:27

Hi,

Can anyone let me know how many threads can be run at a given point of time?

Ranjini

modified on Monday, February 04, 2008 7:56:19 AM

Re: Threads Handling

mejax4-Feb-08 0:33

mejax

4-Feb-08 0:33

Wrong place to post !

http://www.albahari.com/threading/[^]

Re: Threads Handling

Chris Buckett4-Feb-08 0:51

Chris Buckett

4-Feb-08 0:51

ChrisB

Re: Threads Handling

Rajesh R Subramanian4-Feb-08 1:03

Rajesh R Subramanian

4-Feb-08 1:03

Member 4116875 wrote:
how many threads can be run at a given point of time?

Well, that solely depends on time. Intel processors are known to run more threads well in the early morning, whereas AMD processors can run an enormous number of threads after sunset. That's why I run a dual processor machine (one AMD and one intel) with "hot-swap processor slot". I just plug in the faster processor and remove the slower one during morning and evening. Cool | :cool:

*blows smoke away*

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: Threads Handling

Dalek Dave4-Feb-08 1:06

Dalek Dave

4-Feb-08 1:06

I also believe that more threads can be run today than say, 15 years ago.

Perhaps wiser counsel could explain why this should be so.

I suspect that in 20 or 30 years time, more threads could be run. Enough perhaps to spin a suit that could be worn for a job interview where Reading is not required.

------------------------------------
I try to appear cooler,
by calling him Euler.

Re: Threads Handling

Vikram A Punathambekar4-Feb-08 1:12

Vikram A Punathambekar

4-Feb-08 1:12

Hilarious!

Any more visits down South?

Cheers,
Vikram.

"I will put my new found knolage to good use" - Captain See Sharp.

"Every time Lotus Notes starts up, somewhere a puppy, a kitten, a lamb, and a baby seal are killed." - Gary Wheeler.

Re: Threads Handling

Rajesh R Subramanian4-Feb-08 1:23

Rajesh R Subramanian

4-Feb-08 1:23

Vikram A Punathambekar wrote:
Any more visits down South?

Probably there will be a quarterly general body meeting during sometime between the end of this month and the middle of March. I'll be there if they ask me to give a presentation on the new features and progress of our current project. There's a load of work to be done before that and I really wish they postpone that meeting, or else I'd have nothing to present to the chair persons. D'Oh! | :doh:

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: Threads Handling

R. Giskard Reventlov4-Feb-08 1:05

R. Giskard Reventlov

4-Feb-08 1:05

How many do you want to be able to handle at any given point in time?

bin the spin
home

Re: Threads Handling

Simon Capewell4-Feb-08 1:06

Simon Capewell

4-Feb-08 1:06

50,000 assuming 8 years of 20 threads a day.

Re: Threads Handling

Pete O'Hanlon4-Feb-08 1:10

Pete O'Hanlon

4-Feb-08 1:10

Member 4116875 wrote:
how many threads can be run at a given point of time?

It depends how fit they are, how many leads you've got and how many races you've entered them in.

Deja View - the feeling that you've seen this post before.

My blog | My articles

Re: Threads Handling

Mike Diack4-Feb-08 1:19

Mike Diack

4-Feb-08 1:19

In the name of a serious answer - it's a very large number, basically limited by
physical/virtual memory, depending on the threads size (don't forget that by default, many threads often have a 1Mbyte stack allocation in Win32!)

But if you have a ridiculously high number of active unblocked threads, expect very poor performance...

Mike

Re: Threads Handling

Gary Wheeler4-Feb-08 1:48

Gary Wheeler

4-Feb-08 1:48

Mike Diack wrote:
In the name of a serious answer - it's a very large number

The practical limit on the number of threads of execution has little to do with the 'size' of a thread (code size? data size?). It has far more to do with the kernel's ability to switch context between threads and still leave a useful amount of CPU time for all threads to execute.

Mike Diack wrote:
many threads often have a 1Mbyte stack allocation in Win32

The stack doesn't get allocated into the process working set until it's used.

Software Zen: delete this;

Re: Threads Handling

NormDroid4-Feb-08 1:56

NormDroid

4-Feb-08 1:56

Fibers, you should be using fibers and a stint of gardening to put things into perspective.

WPF - Imagineers Wanted
Follow your nose using DoubleAnimationUsingPath

Re: Threads Handling

James R. Twine4-Feb-08 2:38

James R. Twine

4-Feb-08 2:38

   Meaning the total number of threads that the OS can support, or the total number of threads that your app can launch successfully? I believe that the former is limited by the amount of resources available to the OS (having 4GB installed means nothing if only 256MB are used internally by the OS).

   The latter is limited much the same, except that it also gains a limitation from the application itself. Since a thread's stack space comes from the address space of the process, you can create enough threads that you run out of available thread space. You can do the same thing by creating threads without cleaning them up (or closing their handles) - the address space used by the thread will not get recovered, and even though you have memory available, you have "no place to put it."

   Peace!

-=- James
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