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blind-single-colour.c - blind - suckless command-line video editing utility
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---
blind-single-colour.c (2028B)
---
1 /* See LICENSE file for copyright and license details. */
2 #ifndef TYPE
3 #include "common.h"
4
5 USAGE("[-f frames | -f 'inf'] [-F pixel-format] -w width -h height (X Y …
6
7 static struct stream stream = { .width = 0, .height = 0, .frames = 1 };
8 static double X, Y, Z, alpha = 1;
9 static int inf = 0;
10
11 #define FILE "blind-single-colour.c"
12 #include "define-functions.h"
13
14 int
15 main(int argc, char *argv[])
16 {
17 char *arg;
18 const char *pixfmt = "xyza";
19 void (*process)(void);
20
21 ARGBEGIN {
22 case 'f':
23 arg = UARGF();
24 if (!strcmp(arg, "inf"))
25 inf = 1, stream.frames = 0;
26 else
27 stream.frames = etozu_flag('f', arg, 1, SIZE_MAX…
28 break;
29 case 'F':
30 pixfmt = UARGF();
31 break;
32 case 'w':
33 stream.width = etozu_flag('w', UARGF(), 1, SIZE_MAX);
34 break;
35 case 'h':
36 stream.height = etozu_flag('h', UARGF(), 1, SIZE_MAX);
37 break;
38 default:
39 usage();
40 } ARGEND;
41
42 if (!stream.width || !stream.height || !argc || argc > 4)
43 usage();
44
45 if (argc < 3) {
46 Y = etolf_arg("the Y value", argv[0]);
47 X = Y * D65_XYZ_X;
48 Z = Y * D65_XYZ_Z;
49 } else {
50 X = etolf_arg("the X value", argv[0]);
51 Y = etolf_arg("the Y value", argv[1]);
52 Z = etolf_arg("the Z value", argv[2]);
53 }
54 if (~argc & 1)
55 alpha = etolf_arg("the alpha value", argv[argc - 1]);
56
57 if (inf)
58 einf_check_fd(STDOUT_FILENO, "<stdout>");
59
60 eset_pixel_format(&stream, pixfmt);
61 SELECT_PROCESS_FUNCTION(&stream);
62 CHECK_N_CHAN(&stream, 4, 4);
63 if (argc < 3)
64 CHECK_COLOUR_SPACE(&stream, CIEXYZ);
65
66 fprint_stream_head(stdout, &stream);
67 efflush(stdout, "<stdout>");
68
69 process();
70 return 0;
71 }
72
73 #else
74
75 static void
76 PROCESS(void)
77 {
78 typedef TYPE pixel_t[4];
79 pixel_t buf[BUFSIZ / 4];
80 size_t x, y, n, r;
81 for (x = 0; x < ELEMENTSOF(buf); x++) {
82 buf[x][0] = (TYPE)X;
83 buf[x][1] = (TYPE)Y;
84 buf[x][2] = (TYPE)Z;
85 buf[x][3] = (TYPE)alpha;
86 }
87 while (inf || stream.frames--)
88 for (y = stream.height; y--;)
89 for (x = stream.width * sizeof(*buf); x;)
90 for (x -= n = MIN(sizeof(buf), x); n; n …
91 r = ewrite(STDOUT_FILENO, buf, n…
92 }
93
94 #endif
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