fiv/tools/benchmark-io.c

//
// benchmark-io.c: measure and compare image loading times
//
// Copyright (c) 2021 - 2023, Přemysl Eric Janouch <p@janouch.name>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//

#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk/gdk.h>
#include <time.h>

#include "fiv-io.h"

static double
timestamp(void)
{
	struct timespec ts;
	clock_gettime(CLOCK_MONOTONIC, &ts);
	return ts.tv_sec + ts.tv_nsec / 1.e9;
}

static void
one_file(const char *filename)
{
	GFile *file = g_file_new_for_commandline_arg(filename);
	double since_us = timestamp(), us = 0;
	FivIoOpenContext ctx = {
		.uri = g_file_get_uri(file),
		.screen_dpi = 96,
		// Only using this array as a redirect.
		.warnings = g_ptr_array_new_with_free_func(g_free),
	};

	FivIoImage *loaded_by_us = fiv_io_open(&ctx, NULL);
	g_clear_object(&file);
	g_free((char *) ctx.uri);
	g_ptr_array_free(ctx.warnings, TRUE);
	if (!loaded_by_us)
		return;

	fiv_io_image_unref(loaded_by_us);
	us = timestamp() - since_us;

	double since_pixbuf = timestamp(), pixbuf = 0;
	GdkPixbuf *gdk_pixbuf = gdk_pixbuf_new_from_file(filename, NULL);
	if (gdk_pixbuf) {
		cairo_surface_t *loaded_by_pixbuf =
			gdk_cairo_surface_create_from_pixbuf(gdk_pixbuf, 1, NULL);
		g_object_unref(gdk_pixbuf);
		cairo_surface_destroy(loaded_by_pixbuf);
		pixbuf = timestamp() - since_pixbuf;
	}

	printf("%.3f\t%.3f\t%.0f%%\t%s\n", us, pixbuf, us / pixbuf * 100, filename);
}

int
main(int argc, char *argv[])
{
	// Needed for gdk_cairo_surface_create_from_pixbuf().
	gdk_init(&argc, &argv);

	for (int i = 1; i < argc; i++)
		one_file(argv[i]);
	return 0;
}