How to convert yuy2 to a BITMAP in C++ -

i'm using security camera dll retreive image camera. dll call function of program passing image buffer parameter, image in yuy2 format. need convert buffer rgb, tried every formula found on internet no success. every example tried (including http://msdn.microsoft.com/en-us/library/aa904813(vs.80).aspx#yuvformats_2) gives me wrong colors.

i'm able convert buffer bw image using y component of pixel, need color picture. debugged (assembly only) dll shows image in screen , uses directdraw this.

using information microsoft link in question:

for (int = 0;  < width/2;  ++i) {     int y0 = ptrin[0];     int u0 = ptrin[1];     int y1 = ptrin[2];     int v0 = ptrin[3];     ptrin += 4;     int c = y0 - 16;     int d = u0 - 128;     int e = v0 - 128;     ptrout[0] = clip(( 298 * c + 516 * d + 128) >> 8); // blue     ptrout[1] = clip(( 298 * c - 100 * d - 208 * e + 128) >> 8); // green     ptrout[2] = clip(( 298 * c + 409 * e + 128) >> 8); // red     c = y1 - 16;     ptrout[3] = clip(( 298 * c + 516 * d + 128) >> 8); // blue     ptrout[4] = clip(( 298 * c - 100 * d - 208 * e + 128) >> 8); // green     ptrout[5] = clip(( 298 * c + 409 * e + 128) >> 8); // red     ptrout += 6; }