Re: jpg to bmp from FrameCallbackProc without fileio

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#326

From: Peter Fagerbrant
Date: Wed, 19 Jan 2005 08:56

30 lines
2155 bytes

I Use this for storing the bitmapinfo in a array:

for( int y=0;y<CAMRESY;y++){
 xoffsIn = 0;
 BYTE* pLine = (BYTE*) ((THackJPEGImage*)JPEGImage)->Bitmap->ScanLine[y];

 for(  int x=0;x<CAMRESX;x++){
  int r = pLine[ xoffsIn  + 0];
  int g = pLine[ xoffsIn  + 1];
  int b = pLine[ xoffsIn  + 2];

  int iGrey = b*0.11 + g*0.59 + r*0.30;
  pData8Out[ x + yoffsOut ] = iGrey;
  xoffsIn += 3;
  }

 yoffsIn  += CAMRESX+CAMRESX+CAMRESX;
 yoffsOut += CAMRESX;
 }

I do it in realtime. Unfortenly its impacts performens more then I want. The 
camera delivers 30 fps and with this aproach I can only process 12-15 fps.
Is there a faster way to do this?
Is it for example possible to set the bit depht and greyscale directly in 
the JPEGImage component and would it be faster?

Any id�es?

reg
/PFa

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Subject: Re: jpg to bmp from FrameCallbackProc without fileio
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