Drawing Data

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[The feature associated with this page, Video Compression Manager, is a legacy feature. Microsoft strongly recommends that new code does not use this feature.]

The following example uses the ICDraw function and the ICDrawStart, ICDrawStop, ICDrawFlush, and ICDrawEnd macros to draw data on the screen.

DWORD    dwNumBuffers; 
 
// Find out how many buffers need filling before drawing starts.

ICGetBuffersWanted(hIC, &dwNumBuffers); 
for (dw = 0; dw < dwNumBuffers; dw++)
{ 
    ICDraw(hIC, 0, lpFormat, lpData, cbData, dw); // fill the pipeline
    
    // Point lpFormat and lpData to next format and buffer.
    
} 
ICDrawStart(hIC);  // starts the clock 
dw = 0; 
while (fPlaying) 
{ 
    ICDraw(hIC, 0, lpFormat, lpData, chData, dw); // fill more buffers 
    
    // Point lpFormat and lpData to next format and buffer,
    // update dw.
} 
 
ICDrawStop(hIC);   // stops drawing and decompressing when done 
ICDrawFlush(hIC);  // flushes any existing buffers 
ICDrawEnd(hIC);    // ends decompression