#include "cam.h"#include "cmv.h"struct cam c;int skip = 6;void process(int argc, char *argv[]) {	int id = 0;	char filename[24] = "colors.txt";	for (;;) {		int t = getopt(argc, argv, "d:f:c:h");		if (t == -1) {			break;		}		switch (t) {			case 'd':				if (sscanf(optarg, "%d", &id) != 1) {					fprintf(stderr, "error optarg: %s\n", optarg);					exit(-1);				}				printf("using video%d\n", id);				break;			case 'f':				if (sscanf(optarg, "%d", &t) != 1) {					fprintf(stderr, "error optarg: %s\n", optarg);					exit(-1);				}				if (t <= 0 || t > 30) {					fprintf(stderr, "framerate should be (0, 30]\n");					exit(-1);				}				skip = (60 / t + 1) >> 1;				printf("using skip %d (framerate %f)\n", skip, 30.0 / skip);				break;			case 'c':				if (sscanf(optarg, "%s", filename) != 1) {					fprintf(stderr, "error optarg: %s\n", optarg);					exit(-1);				}				printf("using color file %s\n", filename);				break;			case 'h':				fprintf(stderr, "Usage: %s [option]\n"					"-d n\tset cam id n (default 0)\n"					"-f n\tset framerate n (default 5)\n"					"-c s\tset color file s (default colors.txt)\n"					"-h\tprint this help\n", argv[0]);				exit(0);			case '?':				break;			default:				fprintf(stderr, "error option: %d\n", t);				exit(-1);		}	}	cam_init(&c, id);	cmv_init(filename);}