want pcie video capture card put only screenshot image in memory

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Hello

I want to do pattern recognition.
Is there a way to communicate with pcie driver without knowledge of the driver ?
I have to beg for information to the pcie card manufacturer ?

How to do this ? :
.....

mem1 = malloc(xx);
getpattern(mem1); // put database of special image pattern in mem1

mem2 = malloc(xx);
getpicture(mem2); // get screenshot of pcie video capture card and put in mem2

patternrecognition(); // do image compare between pattern and screenshot

......
Have you any advice for me ?

Posted 23-Jan-15 11:07am

peterkoller123

Updated 23-Jan-15 11:09am

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Garth J Lancaster · Accepted Answer · 2015-01-23T11:40:00

Solution 1

Well, its a bit hard not knowing what make/model pcie card - usually you wouldn't have to go begging for the info, it should be in an SDK from the manufacturer, usually hidden under 'support' on their site, and if its a popular make/model even the font-of-all-knowledge Google should have some hits

Determine the make/model, update that info here, and someone may be able to point you in the right direction

I just did a quick search using [c++ pcie video capture interface] and had lots of hits for such cards, all saying they had a c++ compatible SDK

'g'

Posted 23-Jan-15 11:40am

Garth J Lancaster

Comments

peterkoller123 26-Jan-15 17:56pm

Hello
Thank you for answering !
The PEXHDCAP is one of those capture cards.
I asked for SDK and the answer was
"Unfortunately we don’t have any SDK’s or programming info available".
Is the only way to hack or to reengineer the driver ?

Garth J Lancaster 28-Jan-15 18:13pm

I would be looking at DirectShow API (Windows)

http://www.aforgenet.com/framework/docs/html/f4d3c2ba-605c-f066-f969-68260ce5e141.htm

http://directshownet.sourceforge.net/about.html

it seems the 'interface to the driver' is abstracted away and interfaces/layers like these and the reference from Carlo Pallini, below, are how you interact with the card (which is probably a good thing)

CPallini · Accepted Answer · 2015-01-23T11:41:00

Solution 2

Usually you don't deal directly with the display card driver, instead you use a library (like for instance GDI or GDI+ on Windows, see for instance: "Using LockBits in GDI+"[^]). Other platforms provide libraries for accessing image data as well.

Posted 23-Jan-15 11:41am

CPallini