Re: Streaming Video Using GDI+

From:
"Crispen" <cjb111@student.canterbury.ac.nz>
Newsgroups:
microsoft.public.vc.mfc
Date:
18 Jul 2006 19:18:47 -0700
Message-ID:
<1153275527.918121.308500@s13g2000cwa.googlegroups.com>
 The format of the stream is just raw pixel data, its like showing
frame after frame after frame.
AliR wrote:

What format is the stream. If it is MPEG then GDI+ is not what you need to
use. You need to look into DirectShow.

AliR.

<cjb111@student.canterbury.ac.nz> wrote in message
news:1153225241.286839.149910@35g2000cwc.googlegroups.com...

Hello,
I am having trouble trying to stream the pixel data, being feed to the
computer by a framegrabber. Using GDI+ i have managed to display the
image but it is just one image and nothing more, and the program begin
to slow. I cannot see what it is i am doing wrong? Can anybody help me?
I feed it the data from the framegrabbers in as InterBuffer. I use the
while loop to spit the images to the screen.
                        while(welcome==false){

BYTE* InterBuffer = new BYTE[bufSize];
                Rect rect12(0,0,acqWinWidth,acqWinHeight);
                Rect rc(50,60,abs(acqWinWidth*x1),
abs(acqWinHeight*y1));
HWND hRightCam;
hRightCam = RightCamWindow->GetSafeHwnd();
HDC hdRightCam = ::GetDC(hRightCam);
RightCamWindow->GetWindowRect(MrRect);
Graphics graphics(hdRightCam);
InterBuffer = (BYTE*)RGBBuffer;
m_hBitmapImageTriggerLeft =
CreateBitmap(acqWinWidth,acqWinHeight,1,32,InterBuffer);
Bitmap b(m_hBitmapImageTriggerLeft,hPal);
TextureBrush brush(&b,rect12);
brush.ScaleTransform(x1,y1,m_AScale ? MatrixOrderPrepend :
MatrixOrderAppend);
graphics.DrawImage(&b, rc);
graphics.ReleaseHDC(hdRightCam);
brush.ResetTransform();

}

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