[FIX]- BMP-JPEG conversion

In the following Code there was an issue that the converted image's colour was changed and the original format of the image was refused applying a blue filter on it.

Which was due to the BMP colour pallet being different to the one of JPEG, which requires the use of a converter.  Which was inproper.

Author: VerzatileDev

src/assets/images/testjpg.jpg

@@ -81,21 +81,35 @@ int bmp_to_jpeg(const char *input_filename, const char *output_filename)
     jpeg_stdio_dest(&cinfo, output_file);
     // start JPEG compressor
     jpeg_start_compress(&cinfo, TRUE);
+    
     // write JPEG image data
     while (cinfo.next_scanline < cinfo.image_height)
     {
-        JSAMPROW row_pointer = &bmp_data[(cinfo.image_height - cinfo.next_scanline - 1) * (width * 3 + padding)];
+        // Get a pointer to the current row of BMP data
+        unsigned char *bmp_row = &bmp_data[(cinfo.image_height - cinfo.next_scanline - 1) * (width * 3 + padding)];
+        
+        // Allocate an array to hold a row of RGB data in the correct order (RGB)
+        unsigned char *rgb_row = (unsigned char *)malloc(width * 3);
+
+        // Extract RGB data from BGR order and store it in rgb_row
+        for (int i = 0; i < width; i++)
+        {
+            rgb_row[i * 3 + 0] = bmp_row[i * 3 + 2]; // Blue
+            rgb_row[i * 3 + 1] = bmp_row[i * 3 + 1]; // Green
+            rgb_row[i * 3 + 2] = bmp_row[i * 3 + 0]; // Red
+        }
+        
+        // Write the corrected RGB row to the JPEG compressor
+        JSAMPROW row_pointer = rgb_row;
         jpeg_write_scanlines(&cinfo, &row_pointer, 1);
+        
+        // Free the allocated memory for the RGB row
+        free(rgb_row);
     }
-    // finish JPEG compressor
     jpeg_finish_compress(&cinfo);
-    // get size of JPEG image data
     jpeg_size = ftell(output_file);
-    // close output file
     fclose(output_file);
-    // destroy JPEG compressor object
     jpeg_destroy_compress(&cinfo);
-    // free BMP image data
     free(bmp_data);
     printf("Converted %s to %s (%lu bytes)\n", input_filename, output_filename, jpeg_size);