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	blind-next-frame.c - blind - suckless command-line video editing utility
	git clone git://git.suckless.org/blind
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	blind-next-frame.c (1158B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include "common.h"
	3
	4 NUSAGE(2, "[-f frames] width height pixel-format ...")
	5
	6 int
	7 main(int argc, char *argv[])
	8 {
	9 struct stream stream = { .frames = 1, .fd = STDIN_FILENO, .file …
	10 size_t n;
	11 int i;
	12 char *p;
	13
	14 ARGBEGIN {
	15 case 'f':
	16 stream.frames = entozu_flag(2, 'f', UARGF(), 1, SIZE_MAX…
	17 break;
	18 default:
	19 usage();
	20 } ARGEND;
	21
	22 if (argc < 3)
	23 usage();
	24
	25 stream.pixfmt[0] = '\0';
	26 stream.width = entozu_arg(2, "the width", argv[0], 1, SIZE_MAX…
	27 stream.height = entozu_arg(2, "the height", argv[1], 1, SIZE_MAX…
	28 argv += 2, argc -= 2;
	29
	30 n = (size_t)argc - 1;
	31 for (i = 0; i < argc; i++)
	32 n += strlen(argv[i]);
	33 if (n < sizeof(stream.pixfmt)) {
	34 p = stpcpy(stream.pixfmt, argv[0]);
	35 for (i = 1; i < argc; i++) {
	36 *p++ = ' ';
	37 p = stpcpy(p, argv[i]);
	38 }
	39 }
	40 enset_pixel_format(2, &stream, NULL);
	41
	42 fprint_stream_head(stdout, &stream);
	43 enfflush(2, stdout, "<stdout>");
	44
	45 n = ensend_frames(2, &stream, STDOUT_FILENO, stream.frames, "<st…
	46 if (!n)
	47 return 1;
	48 else if (n < stream.frames)
	49 enprintf(2, "%s: is shorter than expected\n", stream.fil…
	50 return 0;
	51 }