YUV to RGB Functions

The following is the yuv420 to rgb24 function. You have tried this function. The parameters are as follows:
Src0 is the starting pointer of the Y volume, src1 is the starting pointer of the U volume, and src2 is the starting pointer of the v volume.
Dst_ori is the starting pointer of the RGB buffer.
Width is width, height is high

The YUV volume distribution for data in yuv420 format is
Y is the starting pointer of data.
The U volume is the starting pointer of the Data + width * Height
The V volume is the starting pointer of the Data + the width * height * 5/4

Void convertyuvtorgb (unsigned char * src0, unsigned char * src1, unsigned char * src2, unsigned char * dst_ori, int width, int height)
{
Extern long int crv_tab [];
Extern long int cbu_tab [];
Extern long int cgu_tab [];

Extern long int cgv_tab [];
Extern long int tab_76309 [];

Int y11, Y21;
Int Y12, y22;
Int Y13, y23;
Int Y14, y24;
Int U, V;
Int I, J;
Int C11, C21, C31, c41;
Int C12, c22, c32, c42;
Unsigned int dw;
Unsigned int * id1, * Id2;
Unsigned char * py1, * py2, * pu, * PV;
Unsigned char * D1, * D2;

D1 = dst_ori;
D1 + = width * height * 3-width * 3;
D2 = D1-width * 3;

Py1 = src0;
Pu = src1;
Pv = src2;
Py2 = py1 + width;

Id1 = (unsigned int *) d1;
Id2 = (unsigned int *) D2;

For (j = 0; j

{
/* Line J + 0 */
For (I = 0; I <width; I + = 4)
{
U = * Pu ++;
V = * PV ++;
C11 = crv_tab [v];
C21 = cgu_tab [u];
C31 = cgv_tab [v];
C41 = cbu_tab [u];
U = * Pu ++;
V = * PV ++;
C12 = crv_tab [v];
C22 = cgu_tab [u];
C32 = cgv_tab [v];
C42 = cbu_tab [u];

 

Y11 = tab_76309 [* py1 ++];/* (255/219) * 65536 */
Y12 = tab_76309 [* py1 ++];
Y13 = tab_76309 [* py1 ++];/* (255/219) * 65536 */
Y14 = tab_76309 [* py1 ++];

 

Y21 = tab_76309 [* py2 ++];
Y22 = tab_76309 [* py2 ++];
Y23 = tab_76309 [* py2 ++];
Y24 = tab_76309 [* py2 ++];

 

/* Rgbr */
DW = (CLP [(y11 + c41)> 16]) |
(CLP [(y11-C21-C31)> 16]) <8) |
(CLP [(y11 + C11)> 16]) <16) |
(CLP [(Y12 + c41)> 16]) <24 );
* Id1 ++ = dw;

 

/* Gbrg */
DW = (CLP [(Y12-C21-C31)> 16]) |
(CLP [(Y12 + C11)> 16]) <8) |
(CLP [(Y13 + c42)> 16]) <16) |
(CLP [(Y13-c22-c32)> 16]) <24 );
* Id1 ++ = dw;

 

/* Brgb */
DW = (CLP [(Y13 + C12)> 16]) |
(CLP [(Y14 + c42)> 16]) <8) |
(CLP [(Y14-c22-c32)> 16]) <16) |
(CLP [(Y14 + C12)> 16]) <24 );
* Id1 ++ = dw;

 

/* Rgbr */
DW = (CLP [(Y21 + c41)> 16]) |
(CLP [(Y21-C21-C31)> 16]) <8) |
(CLP [(Y21 + C11)> 16]) <16) |
(CLP [(y22 + c41)> 16]) <24 );
* Id2 ++ = dw;

 

/* Gbrg */
DW = (CLP [(y22-C21-C31)> 16]) |
(CLP [(y22 + C11)> 16]) <8) |
(CLP [(y23 + c42)> 16]) <16) |
(CLP [(y23-c22-c32)> 16]) <24 );
* Id2 ++ = dw;

 

/* Brgb */
DW = (CLP [(y23 + C12)> 16]) |
(CLP [(y24 + c42)> 16]) <8) |
(CLP [(y24-c22-c32)> 16]) <16) |
(CLP [(y24 + C12)> 16]) <24 );
* Id2 ++ = dw;
}
Id1-= (9 * width)> 2;
ID2-= (9 * width)> 2;
Py1 + = width;
Py2 + = width;
}
}