Benchmark code for vips_resize() function

vips_resize_benchmark.c

/* Benchmark example for vips_resize().
 */

#include <stdio.h>
#include <stdlib.h>

#include <vips/vips.h>

int
main( int argc, char **argv )
{
  VipsImage* image;
  VipsImage* blurred;
  VipsImage* scaled;
  GTimer *timer;
  gdouble elapsed;
  gulong micros;

	if( VIPS_INIT( argv[0] ) )
		vips_error_exit( "unable to start VIPS" );

  if( !(image = vips_image_new_from_file( argv[1], NULL )) ) {
    vips_error( "resize", "unable to load image" ); return 1;
  }

  blurred = image;
  if( vips_gaussblur(image, &blurred, 20, NULL) ) {
    vips_error( "resize", "vips_gaussblur() failed" ); return 1;
  }
  VIPS_UNREF(image);


  scaled = blurred;
  if( vips_resize( blurred, &scaled, 0.999, NULL ) ) {
    vips_error( "imagedisplay", "vips_shrink() failed" ); return 1;
  }
  VIPS_UNREF(blurred);


  /* Save the image to file
   */
  timer = g_timer_new ();
  vips_jpegsave( scaled, "test.jpg", "Q", 75, NULL );
  elapsed = g_timer_elapsed (timer, &micros);
  g_timer_destroy (timer);
  printf("Jpeg image saved in %f\n", elapsed);


  return 0;
}