From 3ef33f5a5d8814860ffe3d2934da180730e2237c Mon Sep 17 00:00:00 2001
From: go38coz <go38coz@mytum.de>
Date: Fri, 26 Jun 2026 19:03:39 +0200
Subject: [PATCH] Added: Using only 1 Byte per pixel for grascale images to
 save_bmp

---
 Implementierung/main.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/Implementierung/main.c b/Implementierung/main.c
index b71bea2..f9a848e 100644
--- a/Implementierung/main.c
+++ b/Implementierung/main.c
@@ -7,7 +7,7 @@
 #include <string.h> // for strcpy
 #include "tricorn.h"
 
-void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t height);
+void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t height,_Bool color);
 
 unsigned tests(void) {
     return 0;
@@ -202,14 +202,14 @@ int main(int argc, char** argv)
     printf("yashar\n");
     tricorn(complexA,width,height,resolution,n,colored,tempArr);
     printf("yashar\n");
-    save_bmp(output_data,tempArr,width,height);
+    save_bmp(output_data,tempArr,width,height,colored);
     
     free(output_data); // 
     return 0;
 }
 
 
-void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t height) {
+void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t height,_Bool color) {
     // Open a file at the filepath given as a stream in the program
     FILE *fptr = fopen(filename,"wb");
 
@@ -218,7 +218,6 @@ void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t he
         exit(EXIT_FAILURE);
     }
 
-
     int actual_height = (height < 0) ? -height : height; // Calculate absolute height for iteration and calculation purposes
     size_t row_padding = (4 - (width) * 3 % 4) % 4; // Calculate padding for each row as .bmp is 4 bytes aligned
     size_t row_width = width * 3 + row_padding; // Calculate row width with padding
@@ -226,6 +225,8 @@ void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t he
     size_t image_size = actual_height * row_width;
     size_t file_size = image_size + 54; // File size = Image Size + Headers
 
+    size_t bytesPerColor = color ? 3 : 1;
+
     // File header - contains information about the file
     unsigned char file_header[14] = { 
         'B', 'M',           // BM - identifies file as a .bmp file
@@ -246,7 +247,7 @@ void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t he
         0, 0, 0, 0,         // Width in pixels - set later
         0, 0, 0, 0,         // Height in pixels - set later
         1, 0,               // Number of color planes - always 1
-        24, 0,              // Number of bits per pixel or color depth
+        bytesPerColor * 8, 0,              // Number of bits per pixel or color depth
         0, 0, 0, 0,         // Compression method - 0 for no compression
         0, 0, 0, 0,         // Image size - set later
         0x13, 0x0B, 0, 0,   // Horizontal resolution in pixels per metre - Set to standart 72 pixels per inch
@@ -281,11 +282,11 @@ void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t he
 
     // Save padding bytes as array so we can write from it easily to the file later
     unsigned char padding_bytes[3] = {0, 0, 0}; 
-
+    
     for(int i = 0; i < actual_height; i++) {
         // Write whole row of pixels - img + (i * width * 3) is the position of the row in the image array
         // size = 3 as we are interpreting every pixel as an object
-        fwrite(img + (i * width * 3), 3, width, fptr); 
+        fwrite(img + (i * width * bytesPerColor), bytesPerColor, width, fptr); 
         if(row_padding > 0) {
             fwrite(padding_bytes,1,row_padding,fptr); // Write row_padding number of padding bytes to the file stream
         }