1 #include <stdio.h>

2 #include <imago2.h>

3

4 int main(int argc, char **argv)

5 {

6 const char *infile = "foo.jpg";

7 const char *outfile = "bar.jpg";

8 int i, j, xsz = 512, ysz = 512;

9 struct img_pixmap img;

10

11 for(i=1; i<argc; i++) {

12 if(argv[i][0] == '-' && argv[i][2] == 0) {

13 switch(argv[i][1]) {

14 case 'i':

15 infile = argv[++i];

16 break;

17

18 case 'o':

19 outfile = argv[++i];

20 break;

21

22 default:

23 fprintf(stderr, "invalid option: %s\n", argv[i]);

24 return 1;

25 }

26 } else {

27 fprintf(stderr, "invalid argument: %s\n", argv[i]);

28 return 1;

29 }

30 }

31

32 img_init(&img);

33

34 if(img_load(&img, infile) == -1) {

35 unsigned char *pix;

36

37 fprintf(stderr, "failed to load image: %s, generating instead\n", infile);

38

39 if(img_set_pixels(&img, xsz, ysz, IMG_FMT_RGB24, 0) == -1) {

40 perror("wtf");

41 return 1;

42 }

43

44 pix = img.pixels;

45 for(i=0; i<ysz; i++) {

46 for(j=0; j<xsz; j++) {

47 int bw = ((i >> 5) & 1) == ((j >> 5) & 1);

48

49 *pix++ = bw ? 255 : 0;

50 *pix++ = 127;

51 *pix++ = bw ? 0 : 255;

52 }

53 }

54 }

55

56 if(img_save(&img, outfile) == -1) {

57 fprintf(stderr, "failed to save file %s\n", outfile);

58 return 1;

59 }

60

61 img_destroy(&img);

62 return 0;

63 }