diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 191 |
1 files changed, 140 insertions, 51 deletions
@@ -13,23 +13,6 @@ #define DEBUG_PRINTF(...) { } #endif -#define _HEADER_SIZE 54 //Fileheader + infoheader -#define IDENTIFIER 0x424d //BM BitMap identifier - -//Address Definitions -#define BF_TYPE 0x00 -#define BF_SIZE 0x02 -#define BF_OFF_BITS 0x0a - -#define BI_SIZE 0x0e -#define BI_WIDTH 0x12 -#define BI_HEIGHT 0x16 -#define BI_BIT_COUNT 0x1c -#define BI_COMPRESSION 0x1e -#define BI_SIZE_IMAGE 0x22 -#define BI_CLR_USED 0x2e -#define BI_CLR_IMPORTANT 0x32 - #define CHAR_SIZE_X 2 //How many pixels should form one ASCII char? #define CHAR_SIZE_Y (2 * CHAR_SIZE_X) @@ -38,21 +21,49 @@ struct prog_param char *filename; unsigned int charsize_x; unsigned int charsize_y; + uint8_t color; }; -struct prog_param parse_args(int argc, char *argv[]); +struct console_color +{ + uint8_t R; + uint8_t G; + uint8_t B; -void print_help( void ); + unsigned int no; +}; +struct console_color colors[] = { //Insert the console's config here + {0,0,0,30}, //Black + {178,24,24,31}, //red + {24,178,24,32}, //Green + {178,104,24,33}, //Brown + {24,24,178,34}, //blue + {178,24,178,35}, //Magenta + {24,178,178,36}, //Cyan + {255,255,255,37} //White +}; + +//Both maps produce very different results const char map[] = {' ', ' ', '.', ',', '`', '-', '~', '"', '*', ':', ';', '<', '!', '/', '?', '%', '&', '=', '$', '#'}; //const char map[] = {' ', '`', '.', ',', ':', ';', '\"', '+', '#', '@'}; +struct prog_param parse_args(int argc, char *argv[]); + +void print_help( void ); + //Calculate average -char avg(int argc, char *argv); +uint8_t avg(int argc, uint8_t *argv); + +//Distance of 2 3d vectors +float distance(uint8_t _1[3], uint8_t _2[3]); -//Calculate luminance from rgb_avg +//Calculate luminance //Order LSB first: BGR -char rgb_avg(uint8_t R, uint8_t G, uint8_t B); +uint8_t rgb_avg(uint8_t R, uint8_t G, uint8_t B); + +//Get nearest printable color in console +unsigned int calc_col(uint8_t R, uint8_t G, uint8_t B); //Select Char based on 1B brightness Value char calc_char(uint8_t _c, uint8_t _min, uint8_t _max); @@ -61,18 +72,17 @@ int main(int argc, char *argv[]) { struct prog_param args = parse_args(argc, argv); - char **ascii_buff; + uint8_t **ascii_buff; + unsigned int **col_buff; uint8_t b_max = 0x00; uint8_t b_min = 0xff; struct bitmap_pixel_data bitmap; - bitmap = bitmap_read(args.filename); - if(bitmap.error) - { + if(bitmap.error) { printf("Error reading file\n"); return 1; } @@ -82,34 +92,62 @@ int main(int argc, char *argv[]) size_x = bitmap.x / args.charsize_x; size_y = bitmap.y / args.charsize_y; - DEBUG_PRINTF("Creating ASCII File %u x %u\n", size_x, size_y); + DEBUG_PRINTF("Output size: %u x %u\n", size_x, size_y); + //Where the chars are stored ascii_buff = malloc(sizeof(*ascii_buff) * size_x); - for (int i = 0; i < size_x; i++) - { + for (int i = 0; i < size_x; i++) { ascii_buff[i] = malloc(sizeof(ascii_buff[i]) * size_y); } + //Where the color is stored, if activated + if(args.color) { + col_buff = malloc(sizeof(*col_buff) * size_x); + for (int i = 0; i < size_x; i++) + { + col_buff[i] = malloc(sizeof(col_buff[i]) * size_y); + } + } + //Nest thine Lööps - for(int x = 0; x < size_x; x++) - { - for(int y = 0; y < size_y; y++) - { - char b[args.charsize_x][args.charsize_y]; + //Very not optimal Variable names!!!!!!!!!!!!! + // + //For every Pixel-char: calculate average values of pixel blocks + for(unsigned int x = 0; x < size_x; x++) { + for(unsigned int y = 0; y < size_y; y++) { + uint8_t brightness [ args.charsize_x ][ args.charsize_y ]; //Average brightness of every pixels + uint8_t cc[ 3 ][ args.charsize_x * args.charsize_y ]; //RGB Values of block + unsigned int cc_counter = 0; + + //Iterate through Pixel block + for(unsigned int row_c = 0; row_c < args.charsize_y; row_c++) { + unsigned int row = y * args.charsize_y + row_c; //Actual position in Bitmap + + for(unsigned int col_c = 0; col_c < args.charsize_x; col_c++) { + unsigned int col = x * args.charsize_x + col_c; //Actual position in bitmap + + brightness[col_c][row_c] = rgb_avg( bitmap.R[col][row], + bitmap.G[col][row], + bitmap.B[col][row] ); + + if(args.color) { + cc[0][cc_counter] = bitmap.R[col][row]; + cc[1][cc_counter] = bitmap.G[col][row]; + cc[2][cc_counter] = bitmap.B[col][row]; + cc_counter++; + } + } + } - for(int r = 0; r < args.charsize_y; r++) + ascii_buff[x][y] = avg(args.charsize_x * args.charsize_y, *brightness); + if(args.color) { - int row = y * args.charsize_y + r; - for(int c = 0; c < args.charsize_x; c++) - { - int col = x * args.charsize_x + c; - //b[c][r] = avg(3, (char*)&bitmap_buff[row][col]); - b[c][r] = rgb_avg(bitmap.R[col][row],bitmap.G[col][row],bitmap.B[col][row]); - } + col_buff[x][y] = calc_col( + (uint8_t)avg(args.charsize_x * args.charsize_y, cc[0]), + (uint8_t)avg(args.charsize_x * args.charsize_y, cc[1]), + (uint8_t)avg(args.charsize_x * args.charsize_y, cc[2]) ); } - ascii_buff[x][y] = avg(args.charsize_x * args.charsize_y, (char*)&b); - if((uint8_t)ascii_buff[x][y] < b_min) b_min = ascii_buff[x][y]; if((uint8_t)ascii_buff[x][y] > b_max) @@ -118,13 +156,16 @@ int main(int argc, char *argv[]) } DEBUG_PRINTF("Brightness Values: Min: %u Max: %u\n", b_min, b_max); - + if(args.color) + printf("\e[0m");//Default colors for(int y = 0; y<size_y; y++) { for(int x = 0; x < size_x; x++) { - printf("%c", calc_char(ascii_buff[x][y], b_min, b_max)); + if(args.color) + printf("\e[%um", col_buff[x][y]); + printf("%c", calc_char(ascii_buff[x][y], 0,255));//b_min, b_max)); } printf("\n"); } @@ -150,9 +191,9 @@ int main(int argc, char *argv[]) }//main -char avg(int argc, char *argv) +uint8_t avg(int argc, uint8_t *argv) { - char ret = 0; + uint8_t ret = 0; uint64_t sum = 0; for(int i = 0; i < argc; i++) @@ -169,9 +210,9 @@ char calc_char(uint8_t _c , uint8_t _min, uint8_t _max) return map [(int)((sizeof(map)-1) * (c))]; } -char rgb_avg(uint8_t R, uint8_t G, uint8_t B) +uint8_t rgb_avg(uint8_t R, uint8_t G, uint8_t B) { - char ret; + uint8_t ret; ret = sqrt( 0.299*pow(R,2) + 0.587*pow(G,2) + 0.114*pow(B,2) ); //(char)(R+R+B+G+G+G)/6; @@ -185,6 +226,7 @@ struct prog_param parse_args(int argc, char *argv[]) ret.filename = NULL; ret.charsize_x = CHAR_SIZE_X; ret.charsize_y = 0; + ret.color = 0; for (int i = 1; i < argc; i++) { @@ -209,6 +251,9 @@ struct prog_param parse_args(int argc, char *argv[]) i++; ret.charsize_y = atoi(argv[i]); break; + case 'c': + ret.color = 1; + break; default: printf("Unrecognized Option\n"); print_help(); @@ -247,5 +292,49 @@ 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\n"); + printf(" -y VAL: set the height of block wich makes up one character. Default: 2*x\n -c: Print in color mode. Default: OFF\n"); +} + +unsigned int calc_col(uint8_t R, uint8_t G, uint8_t B) +{ + DEBUG_PRINTF("%u %u %u\n", R, G, B); + + unsigned int nearest_num = 0; + uint8_t a2[3]; + a2[0] = colors[0].R; + a2[1] = colors[0].G; + a2[2] = colors[0].B; + + uint8_t a1[] = {R,G,B}; + + //Normalize the color + /*while(a1[0] < 255 && a1[1] < 255 && a1[2] < 255) + { + a1[0]++; + a1[1]++; + a1[2]++; + }*/ + + float nearest_val = distance( a1, a2 ); + + for( unsigned int i = 1; i < sizeof(colors) / sizeof(struct console_color); i++) + { + a2[0] = colors[i].R; + a2[1] = colors[i].G; + a2[2] = colors[i].B; + + float dist = distance(a1, a2); + if(dist < nearest_val){ + nearest_num = i; + nearest_val = dist; + } + } + DEBUG_PRINTF("Nearest: %u %f\n", nearest_num, nearest_val); + return colors[nearest_num].no; +} + +float distance(uint8_t _1[3], uint8_t _2[3]) +{ + return fabs(sqrt( pow((double)_1[0], 2) + pow((double)_1[1],2) + pow((double)_1[2],2) ) + - sqrt( pow((double)_2[0], 2) + pow((double)_2[1],2) + pow((double)_2[2],2) ) ); } |