Capturing frame from framebuffer

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Hi all,  
  I have captured frames uisng "/dev/video0". Let me know how to  
capture the frames via "/dev/fb0" (framebuffer). I am using bttv based  
"Pixelview PlayTV Pro" tv tuner card. Following are the API's I have  
used to capture a frame using "/dev/video0".  
  
VIDIOCGCAP,VIDIOCGCHAN VIDIOCSCHAN,VIDIOCSWIN VIDIOCGWIN,  
VIDIOCGPICT VIDIOCSPICT, VIDIOCGMBUF, mmap(),  
VIDIOCMCAPTURE, VIDIOCSYNC.  
  
Let me know what are all the API's I have to use to grab frame from  
"/dev/fb0" by providing some sample code.  
  
With Regards,  
S.Suriya Mohan. 

There is no substitution for hard work. 
Information is wealth. 

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