blind

suckless command-line video editing utility
git clone git://git.suckless.org/blind
Log | Files | Refs | README | LICENSE

blind-repeat-tessellation.c (1151B)


      1 /* See LICENSE file for copyright and license details. */
      2 #include "common.h"
      3 
      4 USAGE("-w width -h height")
      5 
      6 int
      7 main(int argc, char *argv[])
      8 {
      9 	struct stream stream;
     10 	size_t width = 0;
     11 	size_t height = 0;
     12 	size_t x, y, p, w;
     13 	char *buf;
     14 
     15 	ARGBEGIN {
     16 	case 'w':
     17 		width = etozu_flag('w', UARGF(), 1, SIZE_MAX);
     18 		break;
     19 	case 'h':
     20 		height = etozu_flag('h', UARGF(), 1, SIZE_MAX);
     21 		break;
     22 	default:
     23 		usage();
     24 	} ARGEND;
     25 
     26 	if (!width || !height || argc)
     27 		usage();
     28 
     29 	eopen_stream(&stream, NULL);
     30 	echeck_dimensions(&stream, WIDTH | HEIGHT, NULL);
     31 	x = stream.width,  stream.width = width;
     32 	y = stream.height, stream.height = height;
     33 	fprint_stream_head(stdout, &stream);
     34 	efflush(stdout, "<stdout>");
     35 	stream.width  = x;
     36 	stream.height = y;
     37 	buf = emalloc(stream.frame_size);
     38 
     39 	w = width % stream.width;
     40 	while (eread_frame(&stream, buf)) {
     41 		for (y = 0; y < height; y++) {
     42 			p = (y % stream.height) * stream.row_size;
     43 			for (x = 0; x < width / stream.width; x++)
     44 				ewriteall(STDOUT_FILENO, buf + p, stream.row_size, "<stdout>");
     45 			if (w)
     46 				ewriteall(STDOUT_FILENO, buf + p, w * stream.pixel_size, "<stdout>");
     47 		}
     48 	}
     49 
     50 	free(buf);
     51 	return 0;
     52 }