1 |
37 |
quickwayne |
#include <stdio.h>
|
2 |
|
|
#include "io.h"
|
3 |
|
|
|
4 |
|
|
#if 0
|
5 |
|
|
/*USED VALUES OF ROY's CODE THIS MIGHT LEAD TO PROBLEMS*/
|
6 |
|
|
signed char RGB2Y (int r, int g, int b) {
|
7 |
|
|
return ((66*r + 129*g + 25*b + 128)>>8)+128;
|
8 |
|
|
}
|
9 |
|
|
/*USED VALUES OF ROY's CODE THIS MIGHT LEAD TO PROBLEMS*/
|
10 |
|
|
signed char RGB2Cr (int r, int g, int b) {
|
11 |
|
|
return ((-38*r - 74*g + 112*b + 128)>>8)+128;
|
12 |
|
|
}
|
13 |
|
|
/*USED VALUES OF ROY's CODE THIS MIGHT LEAD TO PROBLEMS*/
|
14 |
|
|
signed char RGB2Cb (int r, int g, int b) {
|
15 |
|
|
return ((112*r - 94*g - 18*b + 128)>>8)+128;
|
16 |
|
|
}
|
17 |
|
|
|
18 |
|
|
void RGB2YCrCb(signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3],signed char YMatrix[MATRIX_SIZE][MATRIX_SIZE],signed char CrMatrix[MATRIX_SIZE][MATRIX_SIZE],signed char CbMatrix[MATRIX_SIZE][MATRIX_SIZE])
|
19 |
|
|
{
|
20 |
|
|
unsigned int row, col;
|
21 |
|
|
for(row = 0;row < MATRIX_SIZE; row++) {
|
22 |
|
|
for(col = 0; col < MATRIX_SIZE; col++) {
|
23 |
|
|
YMatrix[row][col] = RGB2Y(pixelmatrix[row][col*3+2],pixelmatrix[row][col*3+1],pixelmatrix[row][col*3]) - 128;
|
24 |
|
|
CrMatrix[row][col] = RGB2Cr(pixelmatrix[row][col*3+2],pixelmatrix[row][col*3+1],pixelmatrix[row][col*3]) - 128;
|
25 |
|
|
CbMatrix[row][col] = RGB2Cb(pixelmatrix[row][col*3+2],pixelmatrix[row][col*3+1],pixelmatrix[row][col*3]) - 128;
|
26 |
|
|
}
|
27 |
|
|
}
|
28 |
|
|
}
|
29 |
|
|
#endif
|
30 |
|
|
|
31 |
|
|
#define RGB2Y(r, g, b) (((66*r + 129*g + 25*b + 128)>>8)+128)
|
32 |
|
|
#define RGB2Cr(r, g, b) (((-38*r - 74*g + 112*b + 128)>>8)+128)
|
33 |
|
|
#define RGB2Cb(r, g, b) (((112*r - 94*g - 18*b + 128)>>8)+128)
|
34 |
|
|
|
35 |
|
|
|
36 |
|
|
void RGB2Y_matrix(signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3],signed char YUVMatrix[MATRIX_SIZE][MATRIX_SIZE])
|
37 |
|
|
{
|
38 |
41 |
quickwayne |
unsigned int row, col, col_3;
|
39 |
37 |
quickwayne |
for(row = 0;row < MATRIX_SIZE; row++) {
|
40 |
41 |
quickwayne |
for(col = 0, col_3=0; col < MATRIX_SIZE; col++, col_3+=3) {
|
41 |
|
|
pixelmatrix[row][col_3] -= 128;
|
42 |
|
|
pixelmatrix[row][col_3+1] -= 128;
|
43 |
|
|
pixelmatrix[row][col_3+2] -= 128;
|
44 |
|
|
YUVMatrix[row][col] = RGB2Y(pixelmatrix[row][col_3+2],pixelmatrix[row][col_3+1],pixelmatrix[row][col_3]) - 128;
|
45 |
37 |
quickwayne |
}
|
46 |
|
|
}
|
47 |
|
|
}
|
48 |
|
|
void RGB2Cr_matrix(signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3],signed char YUVMatrix[MATRIX_SIZE][MATRIX_SIZE])
|
49 |
|
|
{
|
50 |
41 |
quickwayne |
unsigned int row, col, col_3;
|
51 |
37 |
quickwayne |
for(row = 0;row < MATRIX_SIZE; row++) {
|
52 |
41 |
quickwayne |
for(col = 0, col_3=0; col < MATRIX_SIZE; col++, col_3+=3) {
|
53 |
|
|
YUVMatrix[row][col] = RGB2Cr(pixelmatrix[row][col_3+2],pixelmatrix[row][col_3+1],pixelmatrix[row][col_3]) - 128;
|
54 |
37 |
quickwayne |
}
|
55 |
|
|
}
|
56 |
|
|
}
|
57 |
|
|
void RGB2Cb_matrix(signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3],signed char YUVMatrix[MATRIX_SIZE][MATRIX_SIZE])
|
58 |
|
|
{
|
59 |
41 |
quickwayne |
unsigned int row, col, col_3;
|
60 |
37 |
quickwayne |
for(row = 0;row < MATRIX_SIZE; row++) {
|
61 |
41 |
quickwayne |
for(col = 0, col_3; col < MATRIX_SIZE; col++, col_3) {
|
62 |
|
|
YUVMatrix[row][col] = RGB2Cb(pixelmatrix[row][col_3+2],pixelmatrix[row][col_3+1],pixelmatrix[row][col_3]) - 128;
|
63 |
37 |
quickwayne |
}
|
64 |
|
|
}
|
65 |
|
|
}
|
66 |
|
|
|
67 |
|
|
|
68 |
|
|
|