#include<stdio.h>
#include<stdlib.h>

#define MAX 1119756
#define latime 748
#define inaltime 499
unsigned char buffer[MAX];
unsigned char buff[inaltime][3*latime];
unsigned char aux;

void inversare_img(int i, int j){
        //printf("%d %d\n",buffer[0],buffer[1]);
    for(i=0;i<MAX/2;i+=3){
        for(int j=0;j<3;j++){
        aux=buffer[i+j];
        buffer[i+j]= buffer[MAX - i+j];
        buffer[MAX-i+j]=aux;
        }
    }
        //printf("%d %d\n",buffer[MAX-1],buffer[MAX]);

}

void color_swap(int i){
    for(i=0;i<MAX;i++){
        if( (i+1)%3 == 0 || (i+2)%3 == 0)
        buffer[i]=255-buffer[i];
    }
}

void negativ(int i){
    for(i=0;i<MAX;i++){
        buffer[i]=255-buffer[i];
    }
}

void negativ_sc(int i){
    for(i=0;i<MAX;i+=3){
        buffer[i]=255-buffer[i];
    }
}


void old(int i){
	for(i=0;i<MAX;i++){
		if((i+1) % 3 == 0 || (i+2) % 3 == 0)
		buffer[i]=128;
	}
}


void blur_slab(int i){
	for(i=3*(latime+1);i<MAX - (3*(latime+1)); i+=3){
		buffer[i]=((int)(buffer[i+3]+buffer[i-3]))/2;
	}
}
void blur_puternic(int i){
	for(i=3*(latime+1);i<MAX - (3*(latime+1)); i+=3){
		buffer[i]=((int)(buffer[i+3]+buffer[i-3]))/2;
		buffer[i]=((int)(buffer[i-3]+buffer[i+3]+buffer[i+3*latime]+buffer[i-3*latime]+buffer[i+3*latime+3]+buffer[i+3*latime-3]+buffer[i-3*latime+3]+buffer[i-3*latime-3]))/8;
	}
}

void mut_in_matr(int m, int n, int j){
    j=0;
    for(m=0;m<inaltime;m++){
	for(n=0;n<(3*latime);n++){
		buff[m][n]=buffer[j++];
	}
    }
	printf("%d %d %d %d",buff[0][0],buffer[0],buff[inaltime-1][3*latime-1],buffer[MAX-1]);
}

void mut_in_vec(int m,int n,int j){
	j=0;
	for(m=0;m<inaltime;m++)
		for(n=0;n<3*latime;n++)
			buffer[j++]=buff[m][n];
}

void blur_ponderat(int i, int j){
	for(i=1;i<inaltime-1;i++){
		for(j=3;j<(3*latime)-3;j+=3){

			buff[i][j]=((int)(5*buff[i-1][j]+5*buff[i+1][j]+5*buff[i][j+3]+5*buff[i][j-3]+3*buff[i-1][j-3]+3*buff[i-1][j+3]+3*buff[i+1][j-3]+3*buff[i+1][j+3]))/32;

		}
	}
}



int main(){
    FILE *f,*g;
    int i,j,m=0,n=0,opt,c=0;
    f=fopen("/home/mihai/Desktop/Test.yuv","rb");
    g=fopen("/home/mihai/Desktop/Test2.yuv","wb");

    do{

	fread(buffer,sizeof(buffer),1,f);
	printf("\n\n1.Inversare imagine\n2.Schimbare culoare\n3.Negativ_1\n4.Negativ_2\n5.Basic Blur\n6.Blur Aritmetic\n7.Blur ponderat\n8.Reset Img\n0.Iesire\nAlege:");
	scanf("%d",&opt);
	switch(opt){
		case 1:{
			inversare_img(i,j);
			break;
		}
		case 2:{
			color_swap(i);
			break;
		}
		case 3:{
			negativ(i);
			break;
		}
		case 4:{
			negativ_sc(i);
			break;
		}
		case 5:{
			blur_slab(i);
			break;
		}
		case 6:{
			blur_puternic(i);
			break;
		}
		case 7:{
			mut_in_matr(m,n,j);
   			blur_ponderat(i,j);
    			mut_in_vec(m,n,j);
			break;
		}
		case 8:{
			fread(buffer,sizeof(buffer),1,f);
			break;
		}
		default:{
			printf("Comanda gresita\n");
			break;
		}
		case 0:{
			printf("Ai iesit");
			break;
		}


	}
	fwrite(buffer,sizeof(buffer),1,g);
    }while(opt!=0);
    return 0;
}