IS it Possible to display bmp image read from SDRAM

This is my coding .. i am not able to get the exact ouput .whats wrong with these..anybody can tel us....

int main()

{

unsigned char byte_r,byte_g,byte_b;

int x,i,j;

alt_up_sd_card_dev *sd_card_dev = alt_up_sd_card_open_dev("/dev/SDCARD");

sw=IORD_ALTERA_AVALON_PIO_DATA(SWITCH_BASE);

if(sw==1)

if(sd_card_dev != 0)

{

if(alt_up_sd_card_is_Present())

{

if(alt_up_sd_card_is_FAT16())

printf("Card is FAT16\n");

else

printf("Card is not FAT16\n");

sd_fileh= alt_up_sd_card_fopen("Mire.bmp", 0);

if(sd_fileh< 0)

printf("Problem creating file. Error %i", sd_fileh);

else{

printf("\nReading Bmp file");

for(x=0;x<54;x++){

header=(unsigned char)(alt_up_sd_card_read(sd_fileh));

}

//printf("%ld",image_size);

for(i=0;i<280;i++){for(j=40;j<320;j++)

{

byte_b=(unsigned char)(alt_up_sd_card_read(sd_fileh));

byte_g=(unsigned char)(alt_up_sd_card_read(sd_fileh));

byte_r=(unsigned char)(alt_up_sd_card_read(sd_fileh));

pixel=((byte_r>>3)<<11)|((byte_g>>2)<<5)|((byte_b>>3)<<0);

IOWR_16DIRECT(SDRAM_BASE,(((i+80)*640+(j))-40),pixel);

}

}

}

printf("out of loop");

alt_up_sd_card_fclose(sd);

}

else

printf("Card is not available");

}

return 0;

}