mirror of git://git.acid.vegas/archive.git
159 lines
3.7 KiB
C
159 lines
3.7 KiB
C
/* Copyright (c) 2018 Trollforge. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Trollforge's name may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*/
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define STB_IMAGE_IMPLEMENTATION
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#include "stb_image.h"
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#define STB_IMAGE_RESIZE_IMPLEMENTATION
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#include "stb_image_resize.h"
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void usage(void);
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#define P(row, col) (pixel[width * (row) + (col)] > 0x7f)
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#define D(x) printf(x)
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int
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main(int argc, char *argv[])
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{
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uint8_t *pixel;
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int width;
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int height;
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int channels;
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int resize_width = 0;
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int resize_height;
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uint8_t *resized;
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char ch;
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int use_color = 0;
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int fg = 0;
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int bg = 0;
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while((ch = getopt(argc, argv, "w:f:b:")) != -1) {
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switch (ch) {
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case 'w':
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resize_width = strtol(optarg, NULL, 10);
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break;
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case 'f':
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use_color = 1;
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fg = strtol(optarg, NULL, 10);
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break;
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case 'b':
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use_color = 1;
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bg = strtol(optarg, NULL, 10);
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break;
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default:
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usage();
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc < 1) {
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usage();
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}
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pixel = stbi_load(argv[0], &width, &height, &channels, 1);
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if (resize_width) {
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resize_height = height * resize_width / width;
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resized = malloc(resize_width * resize_height);
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stbir_resize_uint8(pixel, width, height, 0,
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resized, resize_width, resize_height, 0,
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1);
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free(pixel);
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pixel = resized;
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height = resize_height;
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width = resize_width;
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}
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for (int r = 0; r < height - 1; r += 2) {
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if (use_color) {
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printf("\03%d,%d", fg, bg);
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}
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for (int c = 0; c < width - 1; c += 2) {
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( P(r , c) && P(r , c + 1) &&
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P(r + 1, c) && P(r + 1, c + 1)) ? D("█"):
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( P(r , c) && P(r , c + 1) &&
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P(r + 1, c) && !P(r + 1, c + 1)) ? D("▛"):
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( P(r , c) && !P(r , c + 1) &&
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P(r + 1, c) && P(r + 1, c + 1)) ? D("▙"):
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( P(r , c) && !P(r , c + 1) &&
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P(r + 1, c) && !P(r + 1, c + 1)) ? D("▌"):
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( P(r , c) && P(r , c + 1) &&
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!P(r + 1, c) && P(r + 1, c + 1)) ? D("▜"):
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( P(r , c) && P(r , c + 1) &&
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!P(r + 1, c) && !P(r + 1, c + 1)) ? D("▀"):
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( P(r , c) && !P(r , c + 1) &&
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!P(r + 1, c) && P(r + 1, c + 1)) ? D("▚"):
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( P(r , c) && !P(r , c + 1) &&
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!P(r + 1, c) && !P(r + 1, c + 1)) ? D("▘"):
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(!P(r , c) && P(r , c + 1) &&
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P(r + 1, c) && P(r + 1, c + 1)) ? D("▟"):
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(!P(r , c) && P(r , c + 1) &&
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P(r + 1, c) && !P(r + 1, c + 1)) ? D("▞"):
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(!P(r , c) && !P(r , c + 1) &&
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P(r + 1, c) && P(r + 1, c + 1)) ? D("▄"):
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(!P(r , c) && !P(r , c + 1) &&
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P(r + 1, c) && !P(r + 1, c + 1)) ? D("▖"):
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(!P(r , c) && P(r , c + 1) &&
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!P(r + 1, c) && P(r + 1, c + 1)) ? D("▐"):
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(!P(r , c) && P(r , c + 1) &&
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!P(r + 1, c) && !P(r + 1, c + 1)) ? D("▝"):
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(!P(r , c) && !P(r , c + 1) &&
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!P(r + 1, c) && P(r + 1, c + 1)) ? D("▗"):
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D(" ");
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}
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printf("\n");
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}
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return 0;
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}
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void usage(void)
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{
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fprintf(stderr, "usage: bwu [options] input\n");
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fprintf(stderr, "-w width set width.\n");
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fprintf(stderr, "-f color set foreground.\n");
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fprintf(stderr, "-b color set background.\n");
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exit(1);
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}
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