LSP_lab2

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
//#include "stdafx.h"

#pragma pack(push, 2)
typedef struct {
    char signature[2];
    int size;
    short emptyField1;
    short emptyField2;
    int data;
    int lengthHead;
    int width;
    int heidth;
    short countColorPlace;
    short bit;
    char methodArch[4];
    int lengthRastrMas;
    int gorisResolution;
    int vertResolution;
    int countColorPic;
    int countMainColor;
} head_bmp;
#pragma pack(pop)

char nameFile[] = "1.bmp";

int saveImg(char *buf, head_bmp head, int width, int heigth, int comp)
{
    FILE *f;
    f = fopen("1_1_1.bmp", "wb");

    fwrite(&head.signature, sizeof(char), 2, f);

    fwrite(&head.size, sizeof(int), 1, f);
    fseek(f, sizeof(char)* 2 + sizeof(int)+4, SEEK_SET);
    fwrite(&head.data, sizeof(int), 1, f);

        fwrite(&head.lengthHead, sizeof(int), 1, f);
        fwrite(&head.width, sizeof(int), 1, f);
        fwrite(&head.heidth, sizeof(int), 1, f);
        fwrite(&head.countColorPlace, sizeof(short), 1, f);
        fwrite(&head.bit, sizeof(short), 1, f);
        fwrite(&head.methodArch, sizeof(char), 4, f);
        fwrite(&head.lengthRastrMas, sizeof(int), 1, f);
        fwrite(&head.gorisResolution, sizeof(int), 1, f);
        fwrite(&head.vertResolution, sizeof(int), 1, f);
        fwrite(&head.countColorPic, sizeof(int), 1, f);
        fwrite(&head.countMainColor, sizeof(int), 1, f);
        fseek(f, head.data, SEEK_SET);
        fwrite(buf, sizeof(char)* ((3 * width*heigth) + (comp*heigth)), 1, f);
        fclose(f);

    return 0;
}

int main()
{
    head_bmp imgHead;
    FILE* f;
    char *buffer;
    char *temp;
    int comp;
    fpos_t *posData;
    int i, j = 0;
    char t,p;
    int index,w;


    if ((f = fopen("1.bmp", "rb")) == NULL)
    {
        printf("Ошибочка вышла: файла не существует");
        return -1;
    }

    fread(&imgHead, sizeof(char)*54, 1, f);
    /*if (imgHead.signature[0] == 66 && imgHead.signature[1] == 77)
    {

        fread(&imgHead.size, sizeof(int), 1, f);
        fseek(f, sizeof(char) * 2 + sizeof(int) + 4, SEEK_SET);
        fread(&imgHead.data, sizeof(int), 1, f);

        fread(&imgHead.lengthHead, sizeof(int), 1, f);
        fread(&imgHead.width, sizeof(int), 1, f);
        fread(&imgHead.heidth, sizeof(int), 1, f);
        fread(&imgHead.countColorPlace, sizeof(short), 1, f);
        fread(&imgHead.bit, sizeof(short), 1, f);
        fread(&imgHead.methodArch, sizeof(char), 4, f);
        fread(&imgHead.lengthRastrMas, sizeof(int), 1, f);
        fread(&imgHead.gorisResolution, sizeof(int), 1, f);
        fread(&imgHead.vertResolution, sizeof(int), 1, f);
        fread(&imgHead.countColorPic, sizeof(int), 1, f);
        fread(&imgHead.countMainColor, sizeof(int), 1, f);

    }
    else
    {
        printf("Ошибочка вышла: файла не формата BMP");
        fclose(f);
    }*/

    if (imgHead.bit == 24)
    {
        comp = (4 - (3*imgHead.width) % 4);
        buffer = (char*)malloc(sizeof(char) * ((3 * imgHead.width*imgHead.heidth) + (comp*imgHead.heidth)));

        fseek(f, imgHead.data, SEEK_SET);
        fread(buffer, sizeof(char)* ((3 * imgHead.width*imgHead.heidth) + (comp*imgHead.heidth)), 1, f);

        for (i = 1; i <= imgHead.heidth; i = i + 1)
        {
            index = 3 * (i - 1)*imgHead.width + (i - 1)*comp;
            w = (int)3 * floor(imgHead.width / 2);
            for (j = 0; j <= w; j = j + 3)
            {

                t = buffer[index + j];
                buffer[index + j] = buffer[3 * i*imgHead.width - j - 3 + (i-1)*comp];
                buffer[3 * i*imgHead.width - j - 3 + (i-1)*comp] = t;

                t = buffer[index + j + 1];
                buffer[index + j + 1] = buffer[3 * i*imgHead.width - j - 2 + (i-1)*comp];
                buffer[3 * i*imgHead.width - j -2 + (i-1)*comp] = t;

                t = buffer[index + j + 2];
                buffer[index + j + 2] = buffer[3 * i*imgHead.width - j-1 + (i-1)*comp];
                buffer[3 * i*imgHead.width - j-1 + (i-1)*comp] = t;
            }
        }

        saveImg(buffer, imgHead, imgHead.width, imgHead.heidth, comp);


    }
    else
    {
        printf("Ошибочка вышла: глубина цвета должна быть равна 24");
        fclose(f);
    }

    printf("Hello World");


    return 0;
}