Semen Reshetov · @rsp243
--- a/solution/include/internal_format/image.h
+++ b/solution/include/internal_format/image.h
+#include <stdint.h>
+
--- a/solution/src/external_format_types/read_write_bmp.c
+++ b/solution/src/external_format_types/read_write_bmp.c
+    uint8_t row_padding = (4 - (width * sizeof(struct pixel)) % 4) % 4;
+    return row_padding;
+}
+
+uint64_t get_row_width(uint64_t width)
+{
+    uint64_t row_width = sizeof(struct pixel) * width + get_row_padding(width); // compute row_width with paddings
+    return row_width;
+}
+
+struct bmp_header create_bmp_header(uint64_t image_width, uint64_t image_height)
+{
+    uint64_t imageSize = (image_width * sizeof(struct pixel) + get_row_padding(image_width)) * image_height;
+    printf("filesize - %ld\n", sizeof(struct bmp_header) + imageSize);
+    return (struct bmp_header){
+        .bfType = 0x4d42,                                   // 0x4d42 | 0x4349 | 0x5450
--- a/solution/src/external_format_types/read_write_bmp.c
+++ b/solution/src/external_format_types/read_write_bmp.c
+        .biYPelsPerMeter = 2834,                            // vertical resolution
+        .biClrUsed = 0,                                     // color table
+        .biClrImportant = 0};                               // important color table, usually 0
+}
+
+enum read_status from_bmp(FILE *in, struct image *img)
+{
+    struct bmp_header bmp_header_obj = {0};
+    uint64_t res = fread(&bmp_header_obj, 1, sizeof(bmp_header_obj), in);
+
+    // check header is valid
+    if (res != sizeof(bmp_header_obj))
+        return READ_INVALID_HEADER;
+
+    // check signature is valid
+    if (bmp_header_obj.bfType != 0x4D42 &&
--- a/solution/src/utils/open_close_file.c
+++ b/solution/src/utils/open_close_file.c
+#include "utils/open_close_file.h"
--- a/solution/include/utils/error_handler.h
+++ b/solution/include/utils/error_handler.h
+#include "external_format_types/read_write_bmp.h"
+#include "utils/open_close_file.h"
+#include <stdint.h>
+
--- a/solution/include/transformations/rotate.h
+++ b/solution/include/transformations/rotate.h
+#include "internal_format/image.h"
+#include <stdint.h>
+
--- a/solution/src/transformations/rotate.c
+++ b/solution/src/transformations/rotate.c
+        {
+            rotated_image_data[jindex * image_height + image_height - index - 1] = source->data[index * image_width + jindex];
+        }
+    }
+
+    free(source->data);
+    source->data = rotated_image_data;
+    source->width = image_height;
+    source->height = image_width;
+}
+
+void rotate(struct image *source, const int32_t rotation_angle)
+{
+    int count = ((360 - rotation_angle) % 360) / 90;
+
+    while (count)
--- a/solution/include/external_format_types/read_write_bmp.h
+++ b/solution/include/external_format_types/read_write_bmp.h
+#include "transformations/rotate.h"
+#include <stdio.h>
+