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#ifndef _PARAMS_H_
#define _PARAMS_H_

#include "common.h"

typedef struct Params {
	unsigned int input_size;
	unsigned int bins;
	int n_warmup;
	int n_reps;
	const char *file_name;
	int exp;
	int dpu_s;
} Params;

static void usage()
{
	fprintf(stderr,
		"\nUsage:  ./program [options]"
		"\n"
		"\nGeneral options:"
		"\n    -h        help"
		"\n    -w <W>    # of untimed warmup iterations (default=1)"
		"\n    -e <E>    # of timed repetition iterations (default=3)"
		"\n    -x <X>    Weak (0) or strong (1, 2) scaling (default=0)"
		"\n"
		"\nBenchmark-specific options:"
		"\n    -i <I>    input size (default=1536*1024 elements)"
		"\n    -b <B>    histogram size (default=256 bins)"
		"\n    -f <F>    input image file (default=../input/image_VanHateren.iml)"
		"\n");
}

struct Params input_params(int argc, char **argv)
{
	struct Params p;
	p.input_size = 1536 * 1024;
	p.bins = 256;
	p.n_warmup = 1;
	p.n_reps = 3;
	p.exp = 0;
	p.file_name = "./input/image_VanHateren.iml";
	p.dpu_s = 64;

	int opt;
	while ((opt = getopt(argc, argv, "hi:b:w:e:f:x:z:")) >= 0) {
		switch (opt) {
		case 'h':
			usage();
			exit(0);
			break;
		case 'i':
			p.input_size = atoi(optarg);
			break;
		case 'b':
			p.bins = atoi(optarg);
			break;
		case 'w':
			p.n_warmup = atoi(optarg);
			break;
		case 'e':
			p.n_reps = atoi(optarg);
			break;
		case 'f':
			p.file_name = optarg;
			break;
		case 'x':
			p.exp = atoi(optarg);
			break;
		case 'z':
			p.dpu_s = atoi(optarg);
			break;
		default:
			fprintf(stderr, "\nUnrecognized option!\n");
			usage();
			exit(0);
		}
	}
	assert(NR_DPUS > 0 && "Invalid # of dpus!");

	return p;
}
#endif