File content as of revision 0:5bd441b8ab2d:

/*
 * decoder.c
 *
 *  Created on: 5/7/2016
 *      Author: Miguel Ruiz García
        Company: University of Cantabria
        e-mail:mrg47@alumnos.unican.es
 */


#include <SDL.h>
#include <stdio.h>
#include "mbed.h"
#include "functions_dec.h"
#include "lora.h"
#define BPS 128000
#define BITS 8
#define STOP_BITS 1
 


int main(int argc, char *argv[]){
    Serial pc(USBTX, USBRX);
    pc.baud(BPS);
    pc.format (BITS,SerialBase::None, STOP_BITS) ;

    int i=0,j=0,p_x=0,p_y=0,k=0;

    short int m[HEIGHT][WIDTH][3];
    short int *matriz=(short int *)malloc(sizeof(short int)*WIDTH*HEIGHT*3);
    
    short int acumulador[3]={0,0,0};
    short int *temp1,*temp2,*temp3;//these are vectors. Memory allocations are done at lora function.
    lora(temp1,acumulador[0],temp2,acumulador[1],temp3,acumulador[2]);//acumulador tells the length of the respective vector(acumulador[0] -> temp1,...)
    int indice=0;
    
    //We must "unroll" the vectors after being processed with the RLC (in the encoder)
    for(i=0;i<acumulador[0]>>1;i++){
        for(j=k;j<*(temp1+indice)+k;j++){
            *(matriz+j*3)=*(temp1+indice+1);
        }
        k=j;
        indice+=2;
    }
    indice=0;
    k=0;
    for(i=0;i<acumulador[1]>>1;i++){
        for(j=k;j<*(temp2+indice)+k;j++){
            *(matriz+j*3+1)=*(temp2+indice+1);
        }
        k=j;
        indice+=2;
    }
    
    indice=0;
    k=0;
    for(i=0;i<acumulador[2]>>1;i++){
        for(j=k;j<*(temp3+indice)+k;j++){
            *(matriz+j*3+2)=*(temp3+indice+1);
        }
        k=j;
        indice+=2;
    }
    
    
    
    zig_zag_dec(m,matriz);

    cuantizador_dec(m);


    int matrix[8][8][3];
    for(i=0;i<HEIGHT;i+=8){
        for(j=0;j<WIDTH;j+=8){

            int k=0,l=0;

            for(k=i;k<i+8;k++){
                for(l=j;l<j+8;l++){


                    matrix[k-i][l-j][0]=m[k][l][0];
                    matrix[k-i][l-j][1]=m[k][l][1];
                    matrix[k-i][l-j][2]=m[k][l][2];
                }

            }

            IDCT(matrix,m,i,j);// i j índices de los pixeles en x e y del macrobloque

        }

    }


    int bpp=3;

    for(i=0;i<HEIGHT;i++){
        for(j=0;j<WIDTH;j++){
               
                if(m[i][j][0]>235) m[i][j][0]=235;
                if(m[i][j][1]>235) m[i][j][1]=235;
                if(m[i][j][2]>240) m[i][j][2]=240;

                if(m[i][j][0]<16) m[i][j][0]=16;
                if(m[i][j][1]<16) m[i][j][1]=16;
                if(m[i][j][2]<16) m[i][j][2]=16;
        }
    }

    yuv_to_rgb(m);

    for(i=0;i<8;i++){
       for(j=0;j<320;j++){
                
                while(!pc.writeable());
                pc.printf("%u",(unsigned char)m[i][j][0]);
                    
                while(!pc.writeable());
                pc.printf("%u",(unsigned char)m[i][j][1]);
                while(!pc.writeable());
                pc.printf("%u",(unsigned char)m[i][j][2]);
        
        }
    }
return 0;
}