Hi all,
in several posts i’ve read that with SDL it is possible to implement readout of frame grabber cards.
I’m writing a bigger application with the Qt toolkit on Windows XP using the MinGW compiler. One important part of the application is to grabb a video stream from a PCI grabber card and analyse this.
For frame grabbing and visualisation i would like to take the SDL package in order to keep the code as system independent as possible.
The problem is that I’m not very experienced with SDL and don’t have much idea how to start. The documentation doesn’t give a real hint to the solution of this problem. 
It would be really great if someone could help and tell me how to realize this, especially how to choose and initialize the driver (resolution, color depth, frame rate…), how to capture a picture out of the stream, how to readout this into an array for example and how to display it. A complete code example (if someone has) would be absolutely perfect :o)
Best regards,
Tina–
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SDL doesn’t have support for this. You have to use a platform-specific
driver for grabbing frames. (On Linux you’d use v4l or v4l2, on Mac OS
X you’d use QuickTime, dunno what you’d use on Windows.)
The posts you read were probably talking about displaying data
captured from these devices, which it would do as well as any other
video task.
(or maybe this is yet another feature new in 1.3 that I don’t know about.)
-:sigma.SBOn 11/9/07, Wuschelchen at kaffeeschluerfer.com wrote:
Hi all,
in several posts i’ve read that with SDL it is possible to implement readout
of frame grabber cards.
I’m writing a bigger application with the Qt toolkit on Windows XP using the
MinGW compiler. One important part of the application is to grabb a video
stream from a PCI grabber card and analyse this.
For frame grabbing and visualisation i would like to take the SDL package in
order to keep the code as system independent as possible.
The problem is that I’m not very experienced with SDL and don’t have much
idea how to start. The documentation doesn’t give a real hint to the
solution of this problem.
It would be really great if someone could help and tell me how to realize
this, especially how to choose and initialize the driver (resolution, color
depth, frame rate…), how to capture a picture out of the stream, how to
readout this into an array for example and how to display it. A complete
code example (if someone has) would be absolutely perfect :o)
Best regards,
Tina
Psssst! Schon vom neuen GMX MultiMessenger geh?rt?
Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger
SDL mailing list
SDL at lists.libsdl.org
http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org
Hi,
hmmm there was for example one interesting post for a frame grabber on a linux system: http://article.gmane.org/gmane.comp.lib.sdl/28318/
does anyone have a similar solution for windows?
how can i get access to the incomming video stream?
on linux this should be possible with e.g.: video = new videoInput("/dev/video0");
but how could i code this for windows?
should i go over directX or is there a better solution?
Best regards,
Tina
-------- Original-Nachricht --------> Datum: Sat, 10 Nov 2007 18:39:57 -0700
Von: sbizna at tejat.net
An: “A list for developers using the SDL library. (includes SDL-announce)”
Betreff: Re: [SDL] Frame Grabbing in SDL
SDL doesn’t have support for this. You have to use a platform-specific
driver for grabbing frames. (On Linux you’d use v4l or v4l2, on Mac OS
X you’d use QuickTime, dunno what you’d use on Windows.)
The posts you read were probably talking about displaying data
captured from these devices, which it would do as well as any other
video task.
(or maybe this is yet another feature new in 1.3 that I don’t know about.)
-:sigma.SB
On 11/9/07, Wuschelchen at kaffeeschluerfer.com wrote:
Hi all,
in several posts i’ve read that with SDL it is possible to implement
readout
of frame grabber cards.
I’m writing a bigger application with the Qt toolkit on Windows XP using
the
MinGW compiler. One important part of the application is to grabb a
video
stream from a PCI grabber card and analyse this.
For frame grabbing and visualisation i would like to take the SDL
package in
order to keep the code as system independent as possible.
The problem is that I’m not very experienced with SDL and don’t have
much
idea how to start. The documentation doesn’t give a real hint to the
solution of this problem.
It would be really great if someone could help and tell me how to
realize
this, especially how to choose and initialize the driver (resolution,
color
depth, frame rate…), how to capture a picture out of the stream, how
to
readout this into an array for example and how to display it. A complete
code example (if someone has) would be absolutely perfect :o)
Best regards,
Tina
Psssst! Schon vom neuen GMX MultiMessenger geh?rt?
Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger
SDL mailing list
SDL at lists.libsdl.org
http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org
SDL mailing list
SDL at lists.libsdl.org
http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org
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