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/*
* src/main.c
* (c) 2020 Jonas Gunz <himself@jonasgunz.de>
* License: MIT
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#include <string.h>
#include "bitmap.h"
#include "character.h"
#ifdef _DEBUG
#warning "Compiling with DEBUG"
#define DEBUG_PRINTF(...) { printf(__VA_ARGS__); }
#else
#define DEBUG_PRINTF(...) { }
#endif
#define CHAR_SIZE_X 2 //How many pixels should form one ASCII char?
#define CHAR_SIZE_Y (2 * CHAR_SIZE_X)
struct prog_param
{
char *filename;
char *character_map;
unsigned int charsize_x;
unsigned int charsize_y;
uint8_t color;
uint8_t use_stdin;
uint8_t use_whitespace;
uint8_t fit_width;
uint8_t dynamic_range;
};
struct prog_param parse_args(int argc, char *argv[]);
void print_help( void );
int main(int argc, char *argv[])
{
struct prog_param args = parse_args(argc, argv);
struct bitmap_image bitmap;
struct bitmap_image shrunk_bitmap;
struct bitmap_image monochrome_bitmap;
uint8_t brightness_min = 0x00;
uint8_t brightness_max = 0xff;
if ( bitmap_read(args.filename, &bitmap) ) {
printf("Error reading file\n");
return 1;
}
if(args.fit_width > 0) {
args.charsize_x = (unsigned int)((float)bitmap.x / (float)args.fit_width);
args.charsize_y = (unsigned int)(((float)bitmap.y / (float)bitmap.x) * (float)args.charsize_x * 2);
}
bitmap_shrink ( &bitmap, &shrunk_bitmap, args.charsize_x, args.charsize_y );
bitmap_convert_monochrome ( &shrunk_bitmap, &monochrome_bitmap );
if( args.dynamic_range ) {
brightness_min = monochrome_bitmap.monochrome_minimum_brightness;
brightness_max = monochrome_bitmap.monochrome_maximum_brightness;
DEBUG_PRINTF("Dynamic Range: Brightness Values: Min: %u Max: %u\n", brightness_min, brightness_max);
}
/* Apply Default Colors */
if(args.color)
printf("\e[0m");
/* Print the buffer */
uint8_t color_mode = args.use_whitespace ? COLOR_BG : COLOR_FG;
for(int y = 0; y < monochrome_bitmap.y; y++) {
for(int x = 0; x < monochrome_bitmap.x; x++) {
char c = args.use_whitespace ? ' ' : calc_char(monochrome_bitmap.R[x][y], brightness_min, brightness_max, args.character_map);
if(args.color)
printf("%s", calc_col_ansi(
shrunk_bitmap.R[x][y],
shrunk_bitmap.G[x][y],
shrunk_bitmap.B[x][y],
color_mode ) );
printf("%c", c);
}
printf("\e[0m\n");
}
/* Apply Default Colors */
if(args.color)
printf("\e[0m");
DEBUG_PRINTF("Finished!\n");
return 0;
}//main
struct prog_param parse_args(int argc, char *argv[])
{
struct prog_param ret;
memset(&ret, 0, sizeof ret);
ret.charsize_x = CHAR_SIZE_X;
for (int i = 1; i < argc; i++) {
if(argv[i][0] == '-') {
int icpy = i;
for(int o = 1; o < strlen(argv[icpy]); o++) {
switch(argv[icpy][o]) {
case 'h':
print_help();
exit(0);
break;
case 'x':
ret.charsize_x = atoi(argv[++i]);
break;
case 'y':
ret.charsize_y = atoi(argv[++i]);
break;
case 'c':
ret.color = 1;
break;
case 'i':
ret.use_stdin = 1;
break;
case 'w':
ret.use_whitespace = 1;
break;
case 's':
ret.fit_width = atoi(argv[++i]);
break;
case 'd':
ret.dynamic_range = 1;
break;
case 'm':
ret.character_map = argv[++i];
break;
default:
printf("Unrecognized Option '%c'\n", argv[icpy][o]);
print_help();
exit(1);
};//switch
}//for o
}//if
else if(ret.filename == NULL && !ret.use_stdin ) {
ret.filename = argv[i];
} else {
printf("Wrong number of arguments\n");
print_help();
exit(1);
}
}//for i
if(ret.filename == NULL && !ret.use_stdin )
{
printf("No input file. Use -i to read from stdin\n");
print_help();
exit(1);
}
if(ret.use_whitespace && !ret.color) {
printf("use -w only with -c\n");
print_help();
exit(1);
}
if(!ret.charsize_y)
ret.charsize_y = 2 * ret.charsize_x;
return ret;
}
void print_help( void )
{
printf("ASCIIMap\n(c) 2019 Jonas Gunz, github.com/kompetenzbolzen/AsciiMap\n");
printf("ASCIIMap prints a ASCII representation of a bitmap image\n\nUsage: [OPTIONS] FILENAME\n");
printf("Options:\n -h: Print this help message\n -x VAL: set the width of block wich makes up one character. Default: %i\n", CHAR_SIZE_X);
printf(" -y VAL: set the height of block wich makes up one character. Default: 2*x\n -c: Print in ANSI color mode. Default: OFF\n");
printf(" -i: Read from STDIN instead of file.\n -w: print only whitespaces with background color\n");
printf(" -d: Dynamic brightness range\n -m PALETTE: specify custom character palette from darkest to brightest\n");
}
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