FreeCalypso > hg > freecalypso-sw

annotate miscutil/fc-rgbconv.c @ 985:8109185528c1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
tfc139: new logic actually works
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sat, 12 Dec 2015 03:24:52 +0000
parents 813287f7169c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
961
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
1 /*
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
2 * This utility is an aid for phone UI development. The color LCDs in the
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
3 * phones targeted by FreeCalypso implement 16-bit color in RGB 5:6:5 format,
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
4 * but these 16-bit color words are not particularly intuitive in raw hex form.
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
5 * In contrast, a 24-bit RGB 8:8:8 color given in RRGGBB hex form is quite
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
6 * intuitive, at least to those who understand RGB.
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
7 *
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
8 * This utility performs the conversion. It takes a single command line
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
9 * argument that must be either 4 or 6 hex digits. If the argument is 4 hex
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
10 * digits, it is interpreted as RGB 5:6:5 and converted into RGB 8:8:8.
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
11 * If the argument is 6 hex digits, it is interpreted as RGB 8:8:8 and
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
12 * converted into RGB 5:6:5. The output of the conversion is emitted on
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
13 * stdout as 4 or 6 hex digits.
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
14 */
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
15
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
16 #include <stdio.h>
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
17 #include <stdlib.h>
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
18 #include <ctype.h>
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
19 #include <string.h>
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
20
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
21 is_arg_all_hex(str)
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
22 char *str;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
23 {
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
24 char *cp;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
25 int c;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
26
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
27 for (cp = str; c = *cp++; )
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
28 if (!isxdigit(c))
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
29 return(0);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
30 return(1);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
31 }
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
32
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
33 convert_565_to_888(in)
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
34 unsigned in;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
35 {
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
36 unsigned r, g, b;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
37
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
38 r = in >> 11;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
39 g = (in >> 5) & 0x3F;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
40 b = in & 0x1F;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
41 printf("%02X%02X%02X\n", r << 3, g << 2, b << 3);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
42 }
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
43
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
44 convert_888_to_565(in)
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
45 unsigned in;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
46 {
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
47 unsigned r, g, b;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
48
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
49 r = (in >> 16) >> 3;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
50 g = ((in >> 8) & 0xFF) >> 2;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
51 b = (in & 0xFF) >> 3;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
52 printf("%04X\n", (r << 11) | (g << 5) | b);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
53 }
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
54
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
55 main(argc, argv)
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
56 char **argv;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
57 {
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
58 unsigned in;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
59
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
60 if (argc != 2) {
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
61 usage: fprintf(stderr,
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
62 "please specify one 4-digit or 6-digit hex RGB value\n");
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
63 exit(1);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
64 }
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
65 if (!is_arg_all_hex(argv[1]))
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
66 goto usage;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
67 in = strtoul(argv[1], 0, 16);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
68 switch (strlen(argv[1])) {
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
69 case 4:
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
70 convert_565_to_888(in);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
71 exit(0);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
72 case 6:
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
73 convert_888_to_565(in);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
74 exit(0);
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
75 }
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
76 goto usage;
813287f7169c fc-rgbconv utility written and added
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents:
diff changeset
77 }