blind-repeat-tessellation.c - blind - suckless command-line video editing utility
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       ---
       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 }