given A 4X4 MATRIX X:
X[4][4]=X00 X01 X02 X04
X10 X11 X12 X13
X20 X21 X22 X23
X30 X31 X32 X33
IF ROW : X00 X01 X02 X04 is denoted by x0:
X10 X11 X12 X13 is denoted by x1
X20 X21 X22 X23 is denoted by x2
X30 X31 X32 X33 is denoted by x3
AND:
STAGE 1 STAGE 2
A0=X0+X3 Y0=A0+A1
A1=X1+X2 Y1=A2+A3<<1
A2=X1-X2 Y2=A0-A1
A3=X0-X3 Y3=A3-A2<<1
WHERE << DENOTES SHIFT LEFT.
HOW CAN I WRITE THE CODES using SSE/SSE2 intrinsics FOR THE ABOVE SENERIO.