1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
#include <stdio.h>
#include "dct.h"
#include "bmpjpeg.h"
#include "bmp.h"
#include "jpeg.h"
#define ENCODE 0
#define DECODE 1
#define MAXROWS 1200
#define MAXCOLS 800
#define HEADER 54
unsigned char Image1[MAXCOLS*3*MAXROWS+HEADER];
unsigned char Image2[MAXCOLS*3*MAXROWS+HEADER];
int main(int argc, char *argv[]) {
int retval, i,j;
int workspace[DCTSIZE_BLOCK];
unsigned char blok8x8[64*3];
unsigned char type;
unsigned int x_size, y_size, offset;
unsigned char depth;
char *fileIn, *fileOut;
FILE *fI, *fO;
/*******************************************************************************************/
/* Just for testing on the PC */
if(argc != 4)
{
printf("need more arguments, 0|1 for de/encrypt and 2 more for the in/ouput files");
return 0;
}
type = atoi(argv[1]);
fileIn = argv[2];
fileOut = argv[3];
if (NULL == (fI = fopen(fileIn, "rb"))){
printf("unable to open the file to read from (%s)",fileIn);
return 0;
}
if ((fO = fopen(fileOut,"wb")) == NULL) {
printf("unable to open the file to write (%s)",fileOut);
return 0;
}
/* Read the max possible size to the memory */
fread(Image1, sizeof(unsigned char), (MAXROWS*MAXCOLS*3+HEADER), fI);
/*******************************************************************************************/
/* The image must be in the memory by now */
// retval = 0;
GetBMPHeaderInfo (Image1,&offset,&x_size,&y_size,&depth);
/*printf("Before:");
for(i=0;i<(x_size*y_size*3+offset);i++)
{
if((i%24)==0) printf("\n");
printf("%02x ",Image1[i]);
}
*/
switch(type) {
case ENCODE:
// GetBMPHeaderInfo (Image1,&offset,&x_size,&y_size,&depth);
printf("Image Resolution: %d x %d x %i Offset: %i\n", x_size, y_size, depth, offset);
for(i=0;i<x_size;i+=8)
{
for(j=0;j<y_size;j+=8)
{
//printf("\nImage Resolution: %i %i\n", i,j);
// RGB -> YUV & Convert to 8x8 --> done
BMPto8x8AndYCbCr(i,j,x_size,y_size,offset,depth,Image1,blok8x8);
// DCT
fdct(blok8x8);
//fdct(workspace);
// ZZ
// Q
// VLC (huffman)
YCbCrAnd8x8toBMP(i,j,x_size,y_size,offset,depth,Image2,blok8x8);
}
}
break;
case DECODE:
GetJPEGHeaderInfo (Image1,&offset,&x_size,&y_size,&depth);
for(i=0;i<x_size;i+=8)
{
for(j=0;j<y_size;j+=8)
{
// VLD (huffman)
// IQ
// ZZ
// IDCT
//idct(workspace);
// YUV -> RGB & Convert 8x8 to BMP style &
YCbCrAnd8x8toBMP(i,j,x_size,y_size,offset,depth,Image2,blok8x8);
}
}
WriteBMPHeaderInfo(Image2,offset,x_size,y_size, depth);
break;
}
WriteBMPHeaderInfo(Image2,offset,x_size,y_size, depth);
//Write Image to the output file.
fwrite(Image2, sizeof(unsigned char), (x_size*y_size*(depth/8))+offset, fO);
fclose(fI);
fclose(fO);
return retval;
}
|
