File: avg.cpp

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/*
 * compile with:
 *
 *      g++ -g -Wall avg.cpp `pkg-config vips-cpp --cflags --libs`
 *
 */

#define DEBUG

#include <vips/vips8>

using namespace vips;

int
main(int argc, char **argv)
{
	if (vips_init(argv[0]))
		vips_error_exit(NULL);

	VImage in = VImage::new_from_file(argv[1],
		VImage::option()->set("access", VIPS_ACCESS_SEQUENTIAL));
	double avg;

	avg = in.avg();

	printf("avg = %g\n", avg);

	vips_shutdown();

	return 0;
}