add vips_sum()
sum an array of images
This commit is contained in:
John Cupitt
parent
58239a4583
commit
4c31c77d80
@ -13,6 +13,7 @@
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- removed embedded thumbnail reader from vipsthumbnail: embedded thumbnails
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are too unlike the main image
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- fix to vipsthumbnail --crop, thanks Alessandro
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- add vips_sum()
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6/3/14 started 7.38.6
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- grey ramp minimum was wrong
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@ -1,6 +1,7 @@
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noinst_LTLIBRARIES = libarithmetic.la
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libarithmetic_la_SOURCES = \
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sum.c \
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abs.c \
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complex.c \
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deviate.c \
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@ -29,6 +30,8 @@ libarithmetic_la_SOURCES = \
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binary.h \
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unary.c \
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unary.h \
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nary.c \
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nary.h \
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unaryconst.c \
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unaryconst.h \
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relational.c \
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@ -690,6 +690,7 @@ void
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vips_arithmetic_operation_init( void )
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{
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extern GType vips_add_get_type( void );
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extern GType vips_sum_get_type( void );
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extern GType vips_subtract_get_type( void );
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extern GType vips_multiply_get_type( void );
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extern GType vips_divide_get_type( void );
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@ -725,6 +726,7 @@ vips_arithmetic_operation_init( void )
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extern GType vips_complexform_get_type( void );
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vips_add_get_type();
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vips_sum_get_type();
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vips_subtract_get_type();
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vips_multiply_get_type();
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vips_divide_get_type();
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364
libvips/arithmetic/hough.c
Normal file
364
libvips/arithmetic/hough.c
Normal file
@ -0,0 +1,364 @@
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/* hough transform
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*
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* 7/3/14
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* - from hough.c
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <string.h>
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#include <vips/vips.h>
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#include "statistic.h"
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typedef struct _VipsHough {
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VipsStatistic parent_instance;
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/* Lock writes to the output image with this. We can't have a separate
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* output for each thread, memory use would be crazy.
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*/
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GMutex *lock;
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/* Accumulate the transform in this large memory image.
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*/
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VipsImage *out;
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} VipsHough;
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typedef VipsStatisticClass VipsHoughClass;
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G_DEFINE_TYPE( VipsHough, vips_hough, VIPS_TYPE_STATISTIC );
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static void
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vips_hough_dispose( GObject *gobject )
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{
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VipsHough *hough = (VipsHough *) gobject;
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VIPS_FREEF( vips_g_mutex_free, hough->lock );
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G_OBJECT_CLASS( vips_hough_parent_class )->dispose( gobject );
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}
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static int
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vips_hough_build( VipsObject *object )
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{
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VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
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VipsStatistic *statistic = VIPS_STATISTIC( object );
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VipsHough *hough = (VipsHough *) object;
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unsigned int *obuffer;
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unsigned int *q;
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int i, j;
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g_object_set( object,
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"out", vips_image_new_buffer(),
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NULL );
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if( VIPS_OBJECT_CLASS( vips_hough_parent_class )->build( object ) )
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return( -1 );
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/* Make the output image.
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*/
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if( vips_image_pipelinev( hough->out,
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VIPS_DEMAND_STYLE_ANY, statistic->ready, NULL ) )
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return( -1 );
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vips_image_init_fields( hough->out,
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hough->hist->mx + 1, 1, hough->hist->bands,
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VIPS_FORMAT_UINT,
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VIPS_CODING_NONE, VIPS_INTERPRETATION_HISTOGRAM, 1.0, 1.0 );
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if( vips_image_write_prepare( hough->out ) )
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return( -1 );
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return( 0 );
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}
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/* Build a sub-hist, based on the main hist.
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*/
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static void *
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vips_hough_start( VipsStatistic *statistic )
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{
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VipsHough *hough = (VipsHough *) statistic;
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/* Make the main hist, if necessary.
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*/
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if( !hough->hist )
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hough->hist = histogram_new( hough,
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hough->which == -1 ?
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statistic->ready->Bands : 1,
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hough->which,
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statistic->ready->BandFmt == VIPS_FORMAT_UCHAR ?
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256 : 65536 );
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return( (void *) histogram_new( hough,
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hough->hist->bands,
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hough->hist->which,
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hough->hist->size ) );
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}
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/* Join a sub-hist onto the main hist.
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*/
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static int
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vips_hough_stop( VipsStatistic *statistic, void *seq )
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{
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Histogram *sub_hist = (Histogram *) seq;
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VipsHough *hough = (VipsHough *) statistic;
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Histogram *hist = hough->hist;
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int i, j;
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g_assert( sub_hist->bands == hist->bands &&
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sub_hist->size == hist->size );
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/* Add on sub-data.
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*/
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hist->mx = VIPS_MAX( hist->mx, sub_hist->mx );
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for( i = 0; i < hist->bands; i++ )
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for( j = 0; j < hist->size; j++ )
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hist->bins[i][j] += sub_hist->bins[i][j];
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/* Blank out sub-hist to make sure we can't add it again.
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*/
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sub_hist->mx = 0;
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for( i = 0; i < sub_hist->bands; i++ )
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sub_hist->bins[i] = NULL;
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return( 0 );
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}
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/* Hist of all bands of uchar.
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*/
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static int
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vips_hough_uchar_scan( VipsStatistic *statistic,
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void *seq, int x, int y, void *in, int n )
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{
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Histogram *hist = (Histogram *) seq;
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int nb = statistic->ready->Bands;
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VipsPel *p = (VipsPel *) in;
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int i, j, z;
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/* Tried swapping these loops, no meaningful speedup.
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*/
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for( i = 0, j = 0; j < n; j++ )
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for( z = 0; z < nb; z++, i++ )
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hist->bins[z][p[i]] += 1;
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/* Note the maximum.
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*/
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hist->mx = 255;
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return( 0 );
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}
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/* Histogram of a selected band of a uchar image.
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*/
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static int
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vips_hough_uchar_extract_scan( VipsStatistic *statistic,
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void *seq, int x, int y, void *in, int n )
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{
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Histogram *hist = (Histogram *) seq;
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int nb = statistic->ready->Bands;
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int max = n * nb;
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unsigned int *bins = hist->bins[0];
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VipsPel *p = (VipsPel *) in;
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int i;
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for( i = hist->which; i < max; i += nb )
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bins[p[i]] += 1;
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/* Note the maximum.
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*/
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hist->mx = 255;
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return( 0 );
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}
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/* Histogram of all bands of a ushort image.
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*/
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static int
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vips_hough_ushort_scan( VipsStatistic *statistic,
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void *seq, int x, int y, void *in, int n )
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{
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Histogram *hist = (Histogram *) seq;
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int mx = hist->mx;
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int nb = statistic->ready->Bands;
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unsigned short *p = (unsigned short *) in;
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int i, j, z;
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for( i = 0, j = 0; j < n; j++ )
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for( z = 0; z < nb; z++, i++ ) {
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int v = p[i];
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/* Adjust maximum.
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*/
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if( v > mx )
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mx = v;
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hist->bins[z][v] += 1;
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}
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/* Note the maximum.
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*/
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hist->mx = mx;
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return( 0 );
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}
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/* Histogram of one band of a ushort image.
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*/
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static int
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vips_hough_ushort_extract_scan( VipsStatistic *statistic,
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void *seq, int x, int y, void *in, int n )
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{
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Histogram *hist = (Histogram *) seq;
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int mx = hist->mx;
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unsigned int *bins = hist->bins[0];
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unsigned short *p = (unsigned short *) in;
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int nb = statistic->ready->Bands;
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int max = nb * n;
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int i;
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for( i = hist->which; i < max; i += nb ) {
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int v = p[i];
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/* Adjust maximum.
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*/
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if( v > mx )
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mx = v;
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bins[v] += 1;
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}
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/* Note the maximum.
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*/
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hist->mx = mx;
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return( 0 );
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}
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static int
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vips_hough_scan( VipsStatistic *statistic, void *seq,
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int x, int y, void *in, int n )
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{
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VipsHough *hough = (VipsHough *) statistic;
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VipsStatisticScanFn scan;
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if( hough->which < 0 ) {
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if( statistic->in->BandFmt == VIPS_FORMAT_UCHAR )
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scan = vips_hough_uchar_scan;
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else
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scan = vips_hough_ushort_scan;
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}
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else {
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if( statistic->in->BandFmt == VIPS_FORMAT_UCHAR )
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scan = vips_hough_uchar_extract_scan;
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else
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scan = vips_hough_ushort_extract_scan;
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}
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return( scan( statistic, seq, x, y, in, n ) );
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}
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/* Save a bit of typing.
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*/
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#define UC VIPS_FORMAT_UCHAR
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#define US VIPS_FORMAT_USHORT
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/* Type mapping: go to uchar or ushort.
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*/
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static const VipsBandFormat vips_histgr_format_table[10] = {
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/* UC C US S UI I F X D DX */
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UC, UC, US, US, US, US, US, US, US, US
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};
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static void
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vips_hough_class_init( VipsHoughClass *class )
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{
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GObjectClass *gobject_class = (GObjectClass *) class;
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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VipsStatisticClass *sclass = VIPS_STATISTIC_CLASS( class );
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gobject_class->dispose = vips_hough_dispose;
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gobject_class->set_property = vips_object_set_property;
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gobject_class->get_property = vips_object_get_property;
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object_class->nickname = "hough";
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object_class->description = _( "find image histogram" );
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object_class->build = vips_hough_build;
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sclass->start = vips_hough_start;
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sclass->scan = vips_hough_scan;
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sclass->stop = vips_hough_stop;
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sclass->format_table = vips_histgr_format_table;
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VIPS_ARG_IMAGE( class, "out", 100,
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_( "Output" ),
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_( "Output histogram" ),
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VIPS_ARGUMENT_REQUIRED_OUTPUT,
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G_STRUCT_OFFSET( VipsHough, out ) );
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}
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static void
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vips_hough_init( VipsHough *hough )
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{
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hough->lock = vips_g_mutex_new();
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}
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/**
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* vips_hough:
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* @in: input image
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* @out: output image
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* @...: %NULL-terminated list of optional named arguments
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*
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* See also:
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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vips_hough( VipsImage *in, VipsImage **out, ... )
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{
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va_list ap;
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int result;
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va_start( ap, out );
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result = vips_call_split( "hough", ap, in, out );
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va_end( ap );
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return( result );
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}
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100
libvips/arithmetic/nary.c
Normal file
100
libvips/arithmetic/nary.c
Normal file
@ -0,0 +1,100 @@
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/* base class for all nary operations
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*
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* 18/3/14
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* - from binary.c
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*/
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/*
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Copyright (C) 1991-2005 The National Gallery
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
|
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|
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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/*
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#define DEBUG
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <vips/vips.h>
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#include "nary.h"
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G_DEFINE_ABSTRACT_TYPE( VipsNary, vips_nary, VIPS_TYPE_ARITHMETIC );
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static int
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vips_nary_build( VipsObject *object )
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{
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VipsArithmetic *arithmetic = VIPS_ARITHMETIC( object );
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VipsNary *nary = VIPS_NARY( object );
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if( nary->in ) {
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arithmetic->in = nary->in->data;
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arithmetic->n = nary->in->n;
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}
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if( VIPS_OBJECT_CLASS( vips_nary_parent_class )->build( object ) )
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return( -1 );
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return( 0 );
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}
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static void
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vips_nary_class_init( VipsNaryClass *class )
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
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gobject_class->set_property = vips_object_set_property;
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gobject_class->get_property = vips_object_get_property;
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vobject_class->nickname = "nary";
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vobject_class->description = _( "nary operations" );
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vobject_class->build = vips_nary_build;
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/* Create properties.
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*/
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VIPS_ARG_BOXED( class, "in", 0,
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_( "Input" ),
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_( "Array of input images" ),
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VIPS_ARGUMENT_REQUIRED_INPUT,
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G_STRUCT_OFFSET( VipsNary, in ),
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VIPS_TYPE_ARRAY_IMAGE );
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}
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static void
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vips_nary_init( VipsNary *nary )
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{
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/* Init our instance fields.
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*/
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}
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73
libvips/arithmetic/nary.h
Normal file
73
libvips/arithmetic/nary.h
Normal file
@ -0,0 +1,73 @@
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/* base class for all nary arithmetic operations
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*/
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/*
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||||
|
||||
Copyright (C) 1991-2005 The National Gallery
|
||||
|
||||
This library 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 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
This library 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 library; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
02110-1301 USA
|
||||
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
||||
|
||||
*/
|
||||
|
||||
#ifndef VIPS_NARY_H
|
||||
#define VIPS_NARY_H
|
||||
|
||||
#include <vips/vips.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif /*__cplusplus*/
|
||||
|
||||
#include "parithmetic.h"
|
||||
|
||||
#define VIPS_TYPE_NARY (vips_nary_get_type())
|
||||
#define VIPS_NARY( obj ) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST( (obj), VIPS_TYPE_NARY, VipsNary ))
|
||||
#define VIPS_NARY_CLASS( klass ) \
|
||||
(G_TYPE_CHECK_CLASS_CAST( (klass), VIPS_TYPE_NARY, VipsNaryClass))
|
||||
#define VIPS_IS_NARY( obj ) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_NARY ))
|
||||
#define VIPS_IS_NARY_CLASS( klass ) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_NARY ))
|
||||
#define VIPS_NARY_GET_CLASS( obj ) \
|
||||
(G_TYPE_INSTANCE_GET_CLASS( (obj), VIPS_TYPE_NARY, VipsNaryClass ))
|
||||
|
||||
typedef struct _VipsNary {
|
||||
VipsArithmetic parent_instance;
|
||||
|
||||
/* The input images.
|
||||
*/
|
||||
VipsArea *in;
|
||||
|
||||
} VipsNary;
|
||||
|
||||
typedef VipsArithmeticClass VipsNaryClass;
|
||||
|
||||
GType vips_nary_get_type( void );
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif /*__cplusplus*/
|
||||
|
||||
#endif /*VIPS_NARY_H*/
|
||||
|
||||
|
||||
269
libvips/arithmetic/sum.c
Normal file
269
libvips/arithmetic/sum.c
Normal file
@ -0,0 +1,269 @@
|
||||
/* sum an array of images
|
||||
*
|
||||
* 18/3/14
|
||||
* - from add.c
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
Copyright (C) 1991-2005 The National Gallery
|
||||
|
||||
This library 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 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
This library 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 library; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
02110-1301 USA
|
||||
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
||||
|
||||
*/
|
||||
|
||||
/*
|
||||
#define DEBUG
|
||||
*/
|
||||
|
||||
#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>
|
||||
|
||||
#include "nary.h"
|
||||
|
||||
typedef VipsNary VipsSum;
|
||||
typedef VipsNaryClass VipsSumClass;
|
||||
|
||||
G_DEFINE_TYPE( VipsSum, vips_sum, VIPS_TYPE_NARY );
|
||||
|
||||
#define LOOP( IN, OUT ) { \
|
||||
IN ** restrict p = (IN **) in; \
|
||||
OUT * restrict q = (OUT *) out; \
|
||||
\
|
||||
for( x = 0; x < sz; x++ ) { \
|
||||
OUT sum; \
|
||||
\
|
||||
sum = p[0][x]; \
|
||||
for( i = 1; i < n; i++ ) \
|
||||
sum += p[i][x]; \
|
||||
q[x] = sum; \
|
||||
} \
|
||||
}
|
||||
|
||||
static void
|
||||
sum_buffer( VipsArithmetic *arithmetic, VipsPel *out, VipsPel **in, int width )
|
||||
{
|
||||
VipsImage *im = arithmetic->ready[0];
|
||||
int n = arithmetic->n;
|
||||
|
||||
/* Complex just doubles the size.
|
||||
*/
|
||||
const int sz = width * vips_image_get_bands( im ) *
|
||||
(vips_band_format_iscomplex( vips_image_get_format( im ) ) ?
|
||||
2 : 1);
|
||||
|
||||
int x;
|
||||
int i;
|
||||
|
||||
/* Sum all input types. Keep types here in sync with
|
||||
* vips_sum_format_table[] below.
|
||||
*/
|
||||
switch( vips_image_get_format( im ) ) {
|
||||
case VIPS_FORMAT_UCHAR:
|
||||
LOOP( unsigned char, unsigned int ); break;
|
||||
case VIPS_FORMAT_CHAR:
|
||||
LOOP( signed char, signed int ); break;
|
||||
case VIPS_FORMAT_USHORT:
|
||||
LOOP( unsigned short, unsigned int ); break;
|
||||
case VIPS_FORMAT_SHORT:
|
||||
LOOP( signed short, signed int ); break;
|
||||
case VIPS_FORMAT_UINT:
|
||||
LOOP( unsigned int, unsigned int ); break;
|
||||
case VIPS_FORMAT_INT:
|
||||
LOOP( signed int, signed int ); break;
|
||||
|
||||
case VIPS_FORMAT_FLOAT:
|
||||
case VIPS_FORMAT_COMPLEX:
|
||||
LOOP( float, float ); break;
|
||||
|
||||
case VIPS_FORMAT_DOUBLE:
|
||||
case VIPS_FORMAT_DPCOMPLEX:
|
||||
LOOP( double, double ); break;
|
||||
|
||||
default:
|
||||
g_assert( 0 );
|
||||
}
|
||||
}
|
||||
|
||||
#define UC VIPS_FORMAT_UCHAR
|
||||
#define C VIPS_FORMAT_CHAR
|
||||
#define US VIPS_FORMAT_USHORT
|
||||
#define S VIPS_FORMAT_SHORT
|
||||
#define UI VIPS_FORMAT_UINT
|
||||
#define I VIPS_FORMAT_INT
|
||||
#define F VIPS_FORMAT_FLOAT
|
||||
#define X VIPS_FORMAT_COMPLEX
|
||||
#define D VIPS_FORMAT_DOUBLE
|
||||
#define DX VIPS_FORMAT_DPCOMPLEX
|
||||
|
||||
/* Type promotion for addition. Sign and value preserving. Make sure these
|
||||
* match the case statement in sum_buffer() above.
|
||||
*/
|
||||
static const VipsBandFormat vips_sum_format_table[10] = {
|
||||
/* UC C US S UI I F X D DX */
|
||||
UI, I, UI, I, UI, I, F, X, D, DX
|
||||
};
|
||||
|
||||
static void
|
||||
vips_sum_class_init( VipsSumClass *class )
|
||||
{
|
||||
VipsObjectClass *object_class = (VipsObjectClass *) class;
|
||||
VipsArithmeticClass *aclass = VIPS_ARITHMETIC_CLASS( class );
|
||||
|
||||
object_class->nickname = "sum";
|
||||
object_class->description = _( "sum an array of images" );
|
||||
|
||||
aclass->process_line = sum_buffer;
|
||||
|
||||
vips_arithmetic_set_format_table( aclass, vips_sum_format_table );
|
||||
}
|
||||
|
||||
static void
|
||||
vips_sum_init( VipsSum *sum )
|
||||
{
|
||||
}
|
||||
|
||||
static int
|
||||
vips_sumv( VipsImage **in, VipsImage **out, int n, va_list ap )
|
||||
{
|
||||
VipsArea *area;
|
||||
VipsImage **array;
|
||||
int i;
|
||||
int result;
|
||||
|
||||
area = vips_area_new_array_object( n );
|
||||
array = (VipsImage **) area->data;
|
||||
for( i = 0; i < n; i++ ) {
|
||||
array[i] = in[i];
|
||||
g_object_ref( array[i] );
|
||||
}
|
||||
|
||||
result = vips_call_split( "sum", ap, area, out );
|
||||
|
||||
vips_area_unref( area );
|
||||
|
||||
return( result );
|
||||
}
|
||||
|
||||
/**
|
||||
* vips_sum:
|
||||
* @in: array of input images
|
||||
* @out: output image
|
||||
* @n: number of input images
|
||||
* @...: %NULL-terminated list of optional named arguments
|
||||
*
|
||||
* This operation sums @in1 + @in2 and writes the result to @out.
|
||||
*
|
||||
* If the images differ in size, the smaller images are enlarged to match the
|
||||
* largest by adding zero pixels along the bottom and right.
|
||||
*
|
||||
* If the number of bands differs, all but one of the images
|
||||
* must have one band. In this case, n-band images are formed from the
|
||||
* one-band images by joining n copies of the one-band images together, and then
|
||||
* the n-band images are operated upon.
|
||||
*
|
||||
* The input images are cast up to the smallest common format (see table
|
||||
* Smallest common format in
|
||||
* <link linkend="VIPS-arithmetic">arithmetic</link>), then the
|
||||
* following table is used to determine the output type:
|
||||
*
|
||||
* <table>
|
||||
* <title>VipsSum type promotion</title>
|
||||
* <tgroup cols='2' align='left' colsep='1' rowsep='1'>
|
||||
* <thead>
|
||||
* <row>
|
||||
* <entry>input type</entry>
|
||||
* <entry>output type</entry>
|
||||
* </row>
|
||||
* </thead>
|
||||
* <tbody>
|
||||
* <row>
|
||||
* <entry>uchar</entry>
|
||||
* <entry>uint</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>char</entry>
|
||||
* <entry>int</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>ushort</entry>
|
||||
* <entry>uint</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>short</entry>
|
||||
* <entry>int</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>uint</entry>
|
||||
* <entry>uint</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>int</entry>
|
||||
* <entry>int</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>float</entry>
|
||||
* <entry>float</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>double</entry>
|
||||
* <entry>double</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>complex</entry>
|
||||
* <entry>complex</entry>
|
||||
* </row>
|
||||
* <row>
|
||||
* <entry>double complex</entry>
|
||||
* <entry>double complex</entry>
|
||||
* </row>
|
||||
* </tbody>
|
||||
* </tgroup>
|
||||
* </table>
|
||||
*
|
||||
* In other words, the output type is just large enough to hold the whole
|
||||
* range of possible values.
|
||||
*
|
||||
* See also: vips_add().
|
||||
*
|
||||
* Returns: 0 on success, -1 on error
|
||||
*/
|
||||
int
|
||||
vips_sum( VipsImage **in, VipsImage **out, int n, ... )
|
||||
{
|
||||
va_list ap;
|
||||
int result;
|
||||
|
||||
va_start( ap, n );
|
||||
result = vips_sumv( in, out, n, ap );
|
||||
va_end( ap );
|
||||
|
||||
return( result );
|
||||
}
|
||||
@ -174,6 +174,8 @@ typedef enum {
|
||||
|
||||
int vips_add( VipsImage *left, VipsImage *right, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_sum( VipsImage **in, VipsImage **out, int n, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_subtract( VipsImage *in1, VipsImage *in2, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_multiply( VipsImage *left, VipsImage *right, VipsImage **out, ... )
|
||||
|
||||
Loading…
Reference in New Issue
Block a user