libvips/libsrc/other/im_benchmark.c

288 lines
7.3 KiB
C

/* @(#) Do a complicated compound operation for benchmarking the threading
* @(#) system. Input should be a large LABQ image, output is a large sRGB
* @(#) image.
* @(#)
* @(#) Usage:
* @(#)
* @(#) int im_benchmark( IMAGE *in, IMAGE *out )
* @(#)
* @(#) Returns 0 on sucess and -1 on error.
* @(#)
*
* 6/10/06
* - hacked in
* 27/11/06
* - added im_benchmarkn()
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <vips/vips.h>
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif /*WITH_DMALLOC*/
/*
VIPS SMP benchmark
------------------
This is adapted from the system used to generate images for POD:
http://cima.ng-london.org.uk/~john/POD
Images from a 10k by 10k studio digital camera are colour processed, resized,
cropped and sharpened.
The original POD script was written in nip (see below). This operation is a
reimplementation in vanilla C to make it easier to run (and less fragile!).
This thing was originally processing images off a remote server over a 100mbit
network. No attempt was made to make it quick (there was no point): you
could make it a lot faster very easily.
------ benchmark in nip2 -----------
#!/home/john/vips/bin/nip2 -s
// get command-line arguments
image_path = argv?1;
crop_id = parse_pint argv?2;
crop_left = parse_pint argv?3;
crop_top = parse_pint argv?4;
crop_width = parse_pint argv?5;
crop_height = parse_pint argv?6;
width = parse_pint argv?7;
height = parse_pint argv?8;
sharp = parse_pint argv?9;
// scale down by this much to undo photographic's relativisation
darken = Vector [1.18, 1, 1];
// fudge factor in XYZ to get a match under NGC lights on uv-durable paper
white_point_adjust = Vector [1.06, 1, 1.01];
// brighten by this in XYZ to get relative colorimetry
brighten = 1.5;
// blacks down by this much in LAB
blacks_down = Vector [-2, 0, 0];
// sharpen params for 400, 300, 200 and 150 dpi
// just change the size of the area we search
sharpen_params_table = [
[ 11, 2.5, 40, 20, 0.5, 1.5 ],
[ 7, 2.5, 40, 20, 0.5, 1.5 ],
[ 5, 2.5, 40, 20, 0.5, 1.5 ],
[ 3, 2.5, 40, 20, 0.5, 1.5 ]
];
// convert D65 XYZ to D50 XYZ
D652D50 = recomb D652D50_direct;
stage_crop in
= extract_area crop_left crop_top crop_width crop_height in,
crop_id != 0
= in;
// fit within a width / height
stage_shrink image
= image, factor > 1; // never upscale
= resize factor factor Interpolate.BILINEAR image
{
hfactor = width / get_width image;
vfactor = height / get_height image;
factor = min_pair hfactor vfactor;
}
// unphotoize, go to xyz, convert to D50, adjust white point, back to lab
stage_colour in
= if in?0 > 99 then Vector [100, 0, 0] else in'''
{
// back to absolute
in' = in / darken;
xyz = colour_transform_to Image_type.XYZ in';
xyz' = D652D50 xyz * white_point_adjust * brighten;
in'' = colour_transform_to Image_type.LAB xyz';
// shadows down
in''' = in'' + blacks_down;
}
stage_sharp in
= (sharpen params?0 params?1 params?2 params?3 params?4 params?5 @
colour_transform_to Image_type.LABQ) in
{
params = sharpen_params_table?sharp;
}
// This was:
//
// stage_srgb in
// = (icc_export 8 "$VIPSHOME/share/nip2/data/sRGB.icm" 1 @
// colour_transform_to Image_type.LABQ) in;
//
// but that uses lcms which is single-threaded. So for this benchmark, we use
// VIPS's own ->sRGB converter, which is less accurate but does thread.
stage_srgb in
= colour_transform_to Image_type.sRGB in;
main = (get_image @ stage_srgb @
stage_sharp @ stage_colour @ stage_shrink @ stage_crop @
colour_transform_to Image_type.LAB @ Image_file) image_path;
------ benchmark in nip2 -----------
*/
/* The main part of the benchmark ... transform labq to labq. Chain several of
* these together to get a CPU-bound operation.
*/
static int
benchmark( IMAGE *in, IMAGE *out )
{
IMAGE *t[18];
double one[3] = { 1.0, 1.0, 1.0 };
double zero[3] = { 0.0, 0.0, 0.0 };
double darken[3] = { 1.0 / 1.18, 1.0, 1.0 };
double whitepoint[3] = { 1.06, 1.0, 1.01 };
double shadow[3] = { -2, 0, 0 };
double white[3] = { 100, 0, 0 };
DOUBLEMASK *d652d50 = im_create_dmaskv( "d652d50", 3, 3,
1.13529, -0.0604663, -0.0606321,
0.0975399, 0.935024, -0.0256156,
-0.0336428, 0.0414702, 0.994135 );
im_add_close_callback( out,
(im_callback_fn) im_free_dmask, d652d50, NULL );
return(
/* Set of descriptors for this operation.
*/
im_open_local_array( out, t, 18, "im_benchmark", "p" ) ||
/* Unpack to float.
*/
im_LabQ2Lab( in, t[0] ) ||
/* Crop 100 pixels off all edges.
*/
im_extract_area( t[0], t[1],
100, 100, t[0]->Xsize - 200, t[0]->Ysize - 200 ) ||
/* Shrink by 10%, bilinear interp.
*/
im_affine( t[1], t[2],
0.9, 0, 0, 0.9, 0, 0,
0, 0, t[1]->Xsize * 0.9, t[1]->Ysize * 0.9 ) ||
/* Find L ~= 100 areas (white surround).
*/
im_extract_band( t[2], t[3], 0 ) ||
im_moreconst( t[3], t[4], 99 ) ||
/* Adjust white point and shadows.
*/
im_lintra_vec( 3, darken, t[2], zero, t[5] ) ||
im_Lab2XYZ( t[5], t[6] ) ||
im_recomb( t[6], t[7], d652d50 ) ||
im_lintra_vec( 3, whitepoint, t[7], zero, t[8] ) ||
im_lintra( 1.5, t[8], 0.0, t[9] ) ||
im_XYZ2Lab( t[9], t[10] ) ||
im_lintra_vec( 3, one, t[10], shadow, t[11] ) ||
/* Make a solid white image.
*/
im_black( t[12], t[4]->Xsize, t[4]->Ysize, 3 ) ||
im_lintra_vec( 3, zero, t[12], white, t[13] ) ||
/* Reattach border.
*/
im_ifthenelse( t[4], t[13], t[11], t[14] ) ||
/* Sharpen.
*/
im_Lab2LabQ( t[14], t[15] ) ||
im_sharpen( t[15], out, 11, 2.5, 40, 20, 0.5, 1.5 )
);
}
/* Chain n benchmarks together to get a CPU-bound operation.
*/
int
im_benchmarkn( IMAGE *in, IMAGE *out, int n )
{
IMAGE *t[2];
if( n == 0 )
/* To sRGB.
*/
return( im_LabQ2disp( in, out, im_col_displays( 7 ) ) );
else
return( im_open_local_array( out, t, 2, "benchmarkn", "p" ) ||
benchmark( in, t[0] ) ||
/* Expand back to the original size again ...
* benchmark does a 200 pixel crop plus a 10% shrink,
* so if we chain many of them together the image gets
* too small.
*/
im_affine( t[0], t[1],
(double) in->Xsize / t[0]->Xsize, 0, 0,
(double) in->Ysize / t[0]->Ysize,
0, 0,
0, 0, in->Xsize, in->Ysize ) ||
im_benchmarkn( t[1], out, n - 1 ) );
}
int
im_benchmark2( IMAGE *in, double *out )
{
IMAGE *t;
return(
!(t = im_open_local( in, "benchmarkn", "p" )) ||
im_benchmarkn( in, t, 1 ) ||
im_avg( t, out )
);
}