/**
* Program that converts an image to black and white
* Usage: ./bw infile outfile
* @author Alex Cole
*/
int main(int argc, char*argv[])
{
simp_t image;
if(argc != 3)
{
fprintf(stderr, "Usage: ./bw infile outfile\n");
return 1;
}
/*reads simp file info and then converts the image to black and white*/
if(read_simp_file(argv[1], &image) != 0) return 1;
simp2bw(&image);
write_simp_file(argv[2], &image);
free_pixels(&image);
return 0;
}
/* Program used to overlay pic2 over pic1 with transparency correlating to both
* pictures alpha values and save it into out.simp
* @param pic1.simp: base simp file
* @param pic2.simp: overlaid simp file
* @param out.simp: simp file to write overlaid image to
* @param int x: x coordinate to start overlay
* @param int y: y coordinate to start overlay
* @ret int: 0 = operation success, -1 = error (accompanied by print statement)
* @author Adam Sunderman
* @modified 02/07/2014 */
int main(int argc, char** argv)
{
/*integers to store loop and error values*/
int i, j, err;
/*file pointer that references base simp file*/
FILE * base_fp;
/*file pointer that references overlay simp file*/
FILE * overlay_fp;
/*file pointer that references simp file to output overlaid image to*/
FILE * out_fp;
/*integers to store overlay coordinates*/
int x, y;
/*simp_file structure to hold base simp data*/
struct simp_file * base_simp_data = (struct simp_file *) malloc(
sizeof(struct simp_file));
/*simp_file structure to hold overlay simp data*/
struct simp_file * overlay_simp_data = (struct simp_file *) malloc(
sizeof(struct simp_file));
/*check for correct number of arguments*/
if(argc != NUM_ARGUMENTS)
{
fprintf(stderr, "error (overlay): incorrect # of command line "
"arguments\n");
fprintf(stderr, "overlay: expected format: ");
fprintf(stderr, ARGUMENT_FORMAT);
fprintf(stderr, "\noverlay: exiting program\n");
return -1;
}
/*parse arguments*/
base_fp = fopen(argv[1], "r+b");
overlay_fp = fopen(argv[2], "r+b");
out_fp = fopen(argv[3], "wb");
x = atoi(argv[4]);
y = atoi(argv[5]);
/*use simp_util read_simp_file to read data from base .simp file
* into base simp_file structure*/
err = read_simp_file(base_fp, base_simp_data);
if(err)
{
fprintf(stderr, "error (overlay): error encountered "
"(read_simp_file)\n");
fprintf(stderr, "overlay: exiting program\n");
return -1;
}
/*use simp_util read_simp_file to read data from overlay .simp file
* into overlay simp_file structure*/
err = read_simp_file(overlay_fp, overlay_simp_data);
if(err)
{
fprintf(stderr, "error (overlay): error encountered "
"(read_simp_file)\n");
fprintf(stderr, "overlay: exiting program\n");
return -1;
}
/*use simp_util overlay method to modify base simp_data structure*/
err = overlay(base_simp_data, overlay_simp_data, x, y);
if(err)
{
fprintf(stderr, "error (overlay): error encountered "
"(simp_util overlay)\n");
fprintf(stderr, "overlay: exiting program\n");
return -1;
}
/*use simp_util write simp_file to write data to provided
* .simp file from base_simp_file structure*/
err = write_simp_file(out_fp, base_simp_data);
if(err)
{
fprintf(stderr, "error (overlay): error encountered "
"(write_simp_file)\n");
fprintf(stderr, "overlay: exiting program\n");
return -1;
}
/*cleanup (free memory)*/
fclose(base_fp);
fclose(overlay_fp);
fclose(out_fp);
simp_data_clear(base_simp_data);
simp_data_clear(overlay_simp_data);
/*return successfully*/
return 0;
}
