Карина Валеева · @kartusx · 2b9bd0d9 · Andrey Andropov (Busy)
--- a/solution/src/image_formats/bmp.c
+++ b/solution/src/image_formats/bmp.c
+
+#include "../../include/image.h"
+#include "../../include/bmp.h"
+
+#define BMP_SIGNATURE 0x4D42
+#define BMP_HEADER_SIZE 40
+#define BMP_BIT_COUNT 24
+#define BMP_PLANES 1
+#define PADDING 4
+
+
+uint8_t get_padding(uint64_t image_width) {
+    return (PADDING - ((image_width * sizeof(struct pixel)) % PADDING)) % PADDING;
+}
+
+enum read_status from_bmp(FILE *in, struct image *img) {
--- a/solution/src/image_formats/bmp.c
+++ b/solution/src/image_formats/bmp.c
+
+    uint8_t padding = get_padding(img->width);
+
+
+    for (uint64_t i = 0; i < img->height; ++i) {
+        size_t bytes = fread(img->data + i * img->width, sizeof(struct pixel), img->width, in);
+        if (bytes != img->width || fseek(in, padding, SEEK_CUR)) {
+            free_image(img);
+            return READ_INVALID_BITS;
+        }
+    }
+
+    return READ_OK;
+}
+
+enum write_status to_bmp(FILE *out, struct image *img) {
--- a/solution/src/image_formats/bmp.c
+++ b/solution/src/image_formats/bmp.c
+        if (bytes != img->width || fseek(in, padding, SEEK_CUR)) {
+            free_image(img);
+            return READ_INVALID_BITS;
+        }
+    }
+
+    return READ_OK;
+}
+
+enum write_status to_bmp(FILE *out, struct image *img) {
+    uint8_t padding = get_padding(img->width);
+
+    struct bmp_header header = {
+        .bfType = BMP_SIGNATURE,
+        .bfileSize = sizeof(struct bmp_header) + sizeof(struct pixel) * img->width * img->height,
+        .bfReserved = 0,
--- a/solution/src/image_formats/bmp.c
+++ b/solution/src/image_formats/bmp.c
+}
+
+enum write_status to_bmp(FILE *out, struct image *img) {
+    uint8_t padding = get_padding(img->width);
+
+    struct bmp_header header = {
+        .bfType = BMP_SIGNATURE,
+        .bfileSize = sizeof(struct bmp_header) + sizeof(struct pixel) * img->width * img->height,
+        .bfReserved = 0,
+        .bfOffBits = sizeof(struct bmp_header),
+        .biSize = BMP_HEADER_SIZE,
+        .biWidth = img->width,
+        .biHeight = img->height,
+        .biPlanes = BMP_PLANES,
+        .biBitCount = BMP_BIT_COUNT,
+        .biCompression = 0,
--- a/solution/src/image.c
+++ b/solution/src/image.c
+#include "../include/image.h"
+
+#include <stdlib.h>
+
+struct image allocate_image(uint64_t width, uint64_t height) {
+    struct image new_image = {.width = width, .height = height, .data = malloc(width * height * sizeof(struct pixel))};
--- a/solution/src/transformation.c
+++ b/solution/src/transformation.c
+#include "../include/image.h"
+
+
+struct image none(struct image image) {
+    struct image new_image = allocate_image(image.width, image.height);
+    for (uint64_t row = 0; row < image.height; row++) {
+        for (uint64_t column = 0; column < image.width; column++) {
+            new_image.data[row * image.width + column] = image.data[row * image.width + column];
--- a/solution/include/transformation.h
+++ b/solution/include/transformation.h
+#ifndef TRANSFORMATION_H
+#define TRANSFORMATION_H
+
+struct image none(struct image img);
+
+struct image cw90(struct image img);
+
+struct image ccw90(struct image img);
--- a/solution/include/image.h
+++ b/solution/include/image.h
+#ifndef IMAGE_H
+#define IMAGE_H
+
+#pragma once
+
+#include <stdint.h>
+
+struct pixel { uint8_t b, g, r; };
+
+struct image {
+    uint64_t width, height;
+    struct pixel* data;
+};
+
+struct image allocate_image(uint64_t width, uint64_t height);
--- a/solution/src/image.c
+++ b/solution/src/image.c
+#include "../include/image.h"
+
+#include <stdlib.h>
+
+struct image allocate_image(uint64_t width, uint64_t height) {
+    struct image new_image = {.width = width, .height = height, .data = malloc(width * height * sizeof(struct pixel))};
+    if (new_image.data == NULL) free(new_image.data);
--- a/solution/src/transformation.c
+++ b/solution/src/transformation.c
+#include "../include/image.h"
+
+
+struct image none(struct image image) {
+    struct image new_image = allocate_image(image.width, image.height);
+    for (uint64_t row = 0; row < image.height; row++) {
+        for (uint64_t column = 0; column < image.width; column++) {
--- a/solution/src/transformation.c
+++ b/solution/src/transformation.c
+
+struct image none(struct image image) {
+    struct image new_image = allocate_image(image.width, image.height);
+    for (uint64_t row = 0; row < image.height; row++) {
+        for (uint64_t column = 0; column < image.width; column++) {
+            new_image.data[row * image.width + column] = image.data[row * image.width + column];
+        }
+    }
+    return new_image;
+}
+
+struct image cw90(struct image image) {
+    struct image new_image = allocate_image(image.height, image.width);
+    for (uint32_t row = 0; row < image.height; ++row) {
+        for (uint32_t column = 0; column < image.width; ++column) {
+            new_image.data[row + (image.width - column - 1) * image.height] = image.data[row * image.width + column];
--- a/solution/src/main.c
+++ b/solution/src/main.c
+
+int main(int argc, char **argv) {
+    if (argc != 4) {
+        fprintf(stderr, "Incorrect input args.");
+        return EXIT_ERROR;
+    }
+
+    char *input_image = argv[1];
+    char *output_image = argv[2];
+    char *transformation = argv[3];
+
+    FILE *in = fopen(input_image, "rb");
+    if (!in) {
+        fprintf(stderr, "Error while opening input file\n");
+        return OPEN_FILE_ERROR;
+    }
--- a/solution/src/image.c
+++ b/solution/src/image.c
+#include <stdlib.h>
+
+struct image allocate_image(uint64_t width, uint64_t height) {
+    struct image new_image = {.width = width, .height = height, .data = malloc(width * height * sizeof(struct pixel))};
+    if (new_image.data == NULL) free(new_image.data);
+    return new_image;
+}
+
+void free_image(struct image *image) {
+    if (image != NULL) {
+        if (image->data != NULL) {
+            free(image->data);
+            image->data = NULL;
+        }
+    }
+}