| 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #define MAXCOLORS 256 |
| 6 | |
| 7 | struct rgb_color { |
| 8 | unsigned int red, green, blue; |
| 9 | }; |
| 10 | |
| 11 | void |
| 12 | WritePPM(char *outfile, unsigned char *data, int width, int height, struct rgb_color *colrs) |
| 13 | { |
| 14 | FILE *fp; |
| 15 | int i; |
| 16 | |
| 17 | if ((fp = fopen(outfile, "w")) == NULL) |
| 18 | return; |
| 19 | fprintf(fp, "P6\n%d %d\n255\n", width, height); |
| 20 | for (i = 0; i < width * height; i++) { |
| 21 | fputc(colrs[data[i]].red, fp); |
| 22 | fputc(colrs[data[i]].green, fp); |
| 23 | fputc(colrs[data[i]].blue, fp); |
| 24 | } |
| 25 | fclose(fp); |
| 26 | } |
| 27 | |
| 28 | unsigned char * |
| 29 | ReadFish(fp, w, h, colrs, filename) |
| 30 | FILE *fp; |
| 31 | int *w, *h; |
| 32 | struct rgb_color *colrs; |
| 33 | char *filename; |
| 34 | { |
| 35 | int i; |
| 36 | char junk[80]; |
| 37 | char name[80]; |
| 38 | char *cptr; |
| 39 | unsigned char *data; |
| 40 | unsigned char *ptr; |
| 41 | int scale, val; |
| 42 | |
| 43 | for (i = 0; i < 4; i++) { |
| 44 | fscanf(fp, "%s %s %d\n", junk, name, &val); |
| 45 | cptr = strrchr(name, '_'); |
| 46 | if (cptr == NULL) { |
| 47 | cptr = name; |
| 48 | } else { |
| 49 | cptr++; |
| 50 | } |
| 51 | |
| 52 | if (strcmp(cptr, "width") == 0) { |
| 53 | *w = val; |
| 54 | } else if (strcmp(cptr, "height") == 0) { |
| 55 | *h = val; |
| 56 | } else if (strcmp(cptr, "colors") == 0) { |
| 57 | scale = val; |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | cptr = strrchr(name, '_'); |
| 62 | if (cptr == NULL) { |
| 63 | strcpy(filename, ""); |
| 64 | } else { |
| 65 | *cptr = '\0'; |
| 66 | strcpy(filename, name); |
| 67 | } |
| 68 | |
| 69 | val = fgetc(fp); |
| 70 | while (val != '{') { |
| 71 | val = fgetc(fp); |
| 72 | } |
| 73 | for (i = 0; i < scale; i++) { |
| 74 | fscanf(fp, " %d", &val); |
| 75 | colrs[i].red = val / 256; |
| 76 | val = fgetc(fp); |
| 77 | } |
| 78 | |
| 79 | val = fgetc(fp); |
| 80 | while (val != '{') { |
| 81 | val = fgetc(fp); |
| 82 | } |
| 83 | for (i = 0; i < scale; i++) { |
| 84 | fscanf(fp, " %d", &val); |
| 85 | colrs[i].green = val / 256; |
| 86 | val = fgetc(fp); |
| 87 | } |
| 88 | |
| 89 | val = fgetc(fp); |
| 90 | while (val != '{') { |
| 91 | val = fgetc(fp); |
| 92 | } |
| 93 | for (i = 0; i < scale; i++) { |
| 94 | fscanf(fp, " %d", &val); |
| 95 | colrs[i].blue = val / 256; |
| 96 | val = fgetc(fp); |
| 97 | } |
| 98 | |
| 99 | for (i = scale; i < MAXCOLORS; i++) { |
| 100 | colrs[i].red = 0; |
| 101 | colrs[i].green = 0; |
| 102 | colrs[i].blue = 0; |
| 103 | } |
| 104 | |
| 105 | val = fgetc(fp); |
| 106 | while (val != '{') { |
| 107 | val = fgetc(fp); |
| 108 | } |
| 109 | data = (unsigned char *) malloc(2 * (*w) * (*h)); |
| 110 | ptr = data; |
| 111 | for (i = 0; i < ((*w) * (*h)); i++) { |
| 112 | fscanf(fp, " 0x%x", &val); |
| 113 | *ptr++ = (unsigned char) val; |
| 114 | val = fgetc(fp); |
| 115 | } |
| 116 | |
| 117 | val = fgetc(fp); |
| 118 | while (val != '{') { |
| 119 | val = fgetc(fp); |
| 120 | } |
| 121 | for (i = 0; i < ((*w) * (*h)); i++) { |
| 122 | fscanf(fp, " 0x%x", &val); |
| 123 | *ptr++ = (unsigned char) val; |
| 124 | val = fgetc(fp); |
| 125 | } |
| 126 | |
| 127 | return (data); |
| 128 | } |
| 129 | |
| 130 | |
| 131 | |
| 132 | main(argc, argv) |
| 133 | int argc; |
| 134 | char *argv[]; |
| 135 | { |
| 136 | FILE *ifd; |
| 137 | int i; |
| 138 | struct rgb_color colrs[MAXCOLORS]; |
| 139 | unsigned char *data; |
| 140 | unsigned char *data1; |
| 141 | unsigned char *data2; |
| 142 | unsigned char *ptr; |
| 143 | unsigned char *ptr2; |
| 144 | int width, height; |
| 145 | char outfile[256]; |
| 146 | char outname[80]; |
| 147 | |
| 148 | if (argc < 2) { |
| 149 | fprintf(stderr, "Usage: %s <fish.h> [<outprefix>]\n", argv[0]); |
| 150 | exit(1); |
| 151 | } |
| 152 | |
| 153 | ifd = fopen(argv[1], "r"); |
| 154 | if (ifd == NULL) { |
| 155 | fprintf(stderr, "Error: cannot open (%s) for read\n", argv[1]); |
| 156 | exit(1); |
| 157 | } |
| 158 | |
| 159 | data = ReadFish(ifd, &width, &height, colrs, outname); |
| 160 | fclose(ifd); |
| 161 | ptr = data; |
| 162 | |
| 163 | data1 = (unsigned char *) malloc(width * height); |
| 164 | ptr2 = data1; |
| 165 | for (i = 0; i < (width * height); i++) { |
| 166 | *ptr2++ = *ptr++; |
| 167 | } |
| 168 | |
| 169 | data2 = (unsigned char *) malloc(width * height); |
| 170 | ptr2 = data2; |
| 171 | for (i = 0; i < (width * height); i++) { |
| 172 | *ptr2++ = *ptr++; |
| 173 | } |
| 174 | |
| 175 | if (argc >= 3) { |
| 176 | strcpy(outname, argv[2]); |
| 177 | } |
| 178 | |
| 179 | sprintf(outfile, "%s_1.ppm", outname); |
| 180 | |
| 181 | WritePPM(outfile, data1, width, height, colrs); |
| 182 | |
| 183 | sprintf(outfile, "%s_2.ppm", outname); |
| 184 | |
| 185 | WritePPM(outfile, data2, width, height, colrs); |
| 186 | |
| 187 | exit(0); |
| 188 | } |