ed2054dbbc
there's a problem with out of bounds values, for example: vips relational_const k2.jpg x.v equal 1000 actually finds pixels == 255, since 1000 is saturated converted to 255 before the test starts. This patch reworks arithmetic against const values to fix this.
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* base class for all unaryconst arithmetic operations
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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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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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#ifndef VIPS_UNARY_CONST_H
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#define VIPS_UNARY_CONST_H
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#ifdef __cplusplus
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extern "C" {
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#endif /*__cplusplus*/
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#include "unary.h"
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#define VIPS_TYPE_UNARY_CONST (vips_unary_const_get_type())
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#define VIPS_UNARY_CONST( obj ) \
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(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
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VIPS_TYPE_UNARY_CONST, VipsUnaryConst ))
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#define VIPS_UNARY_CONST_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_CAST( (klass), \
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VIPS_TYPE_UNARY_CONST, VipsUnaryConstClass))
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#define VIPS_IS_UNARY_CONST( obj ) \
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(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_UNARY_CONST ))
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#define VIPS_IS_UNARY_CONST_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_UNARY_CONST ))
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#define VIPS_UNARY_CONST_GET_CLASS( obj ) \
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(G_TYPE_INSTANCE_GET_CLASS( (obj), \
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VIPS_TYPE_UNARY_CONST, VipsUnaryConstClass ))
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typedef struct _VipsUnaryConst {
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VipsUnary parent_instance;
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/* Our constants.
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*/
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VipsArea *c;
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/* Our constant expanded to match arith->ready in size. We need int
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* and double versions.
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*
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* is_int is TRUE if the two arrays are equal for every element.
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*/
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int n;
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int *c_int;
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double *c_double;
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gboolean is_int;
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} VipsUnaryConst;
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typedef struct _VipsUnaryConstClass {
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VipsUnaryClass parent_class;
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} VipsUnaryConstClass;
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GType vips_unary_const_get_type( void );
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#ifdef __cplusplus
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}
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#endif /*__cplusplus*/
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#endif /*VIPS_UNARY_CONST_H*/
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