blind-norm.c - blind - suckless command-line video editing utility | |
git clone git://git.suckless.org/blind | |
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blind-norm.c (1695B) | |
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1 /* See LICENSE file for copyright and license details. */ | |
2 #ifndef TYPE | |
3 #include "common.h" | |
4 | |
5 USAGE("[-axyz]") | |
6 | |
7 static int skip_a = 0; | |
8 static int skip_x = 0; | |
9 static int skip_y = 0; | |
10 static int skip_z = 0; | |
11 | |
12 #define FILE "blind-norm.c" | |
13 #include "define-functions.h" | |
14 | |
15 int | |
16 main(int argc, char *argv[]) | |
17 { | |
18 struct stream stream; | |
19 void (*process)(struct stream *stream); | |
20 | |
21 ARGBEGIN { | |
22 case 'a': | |
23 skip_a = 1; | |
24 break; | |
25 case 'x': | |
26 skip_x = 1; | |
27 break; | |
28 case 'y': | |
29 skip_y = 1; | |
30 break; | |
31 case 'z': | |
32 skip_z = 1; | |
33 break; | |
34 default: | |
35 usage(); | |
36 } ARGEND; | |
37 | |
38 if (argc) | |
39 usage(); | |
40 | |
41 eopen_stream(&stream, NULL); | |
42 | |
43 SELECT_PROCESS_FUNCTION(&stream); | |
44 CHECK_ALPHA_CHAN(&stream); | |
45 CHECK_N_CHAN(&stream, 4, 4); | |
46 | |
47 fprint_stream_head(stdout, &stream); | |
48 efflush(stdout, "<stdout>"); | |
49 process(&stream); | |
50 return 0; | |
51 } | |
52 | |
53 #else | |
54 | |
55 static void | |
56 PROCESS(struct stream *stream) | |
57 { | |
58 size_t i, n; | |
59 TYPE x, y, z, a, norm; | |
60 do { | |
61 n = stream->ptr / stream->pixel_size; | |
62 for (i = 0; i < n; i++) { | |
63 x = ((TYPE *)(stream->buf))[4 * i + 0]; | |
64 y = ((TYPE *)(stream->buf))[4 * i + 1]; | |
65 z = ((TYPE *)(stream->buf))[4 * i + 2]; | |
66 a = ((TYPE *)(stream->buf))[4 * i + 3]; | |
67 norm = sqrt(x * x + y * y + z * z + a * a); | |
68 if (!skip_x) | |
69 ((TYPE *)(stream->buf))[4 * i + 0] = nor… | |
70 if (!skip_y) | |
71 ((TYPE *)(stream->buf))[4 * i + 1] = nor… | |
72 if (!skip_z) | |
73 ((TYPE *)(stream->buf))[4 * i + 2] = nor… | |
74 if (!skip_a) | |
75 ((TYPE *)(stream->buf))[4 * i + 3] = nor… | |
76 } | |
77 n *= stream->pixel_size; | |
78 ewriteall(STDOUT_FILENO, stream->buf, n, "<stdout>"); | |
79 memmove(stream->buf, stream->buf + n, stream->ptr -= n); | |
80 } while (eread_stream(stream, SIZE_MAX)); | |
81 if (stream->ptr) | |
82 eprintf("%s: incomplete frame\n", stream->file); | |
83 } | |
84 | |
85 #endif |