File: invert.cpp

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/*
 * compile with:
 *
 *      g++ -g -Wall invert.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);

	printf("these should match if VImage is compile-time-only\n");
	printf("sizeof(VipsImage *) = %zd\n", sizeof(VipsImage *));
	printf("sizeof(VImage) = %zd\n", sizeof(VImage));

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

	VImage out;

	out = in.invert();

	out.write_to_file(argv[2]);

	vips_shutdown();

	return 0;
}