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// Object part of VDisplay class
/*
Copyright (C) 1991-2001 The National Gallery
This program 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 <cstdlib>
#include <cstring>
#include <vips/vips.h>
#include <vips/internal.h>
#include <vips/vipscpp.h>
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif /*WITH_DMALLOC*/
VIPS_NAMESPACE_START
/* Refcounting stuff first.
*/
// Free an im_col_display
static void
free_display( im_col_display *d )
{
if( d->d_name )
im_free( d->d_name );
im_free( d );
}
// Dupe an im_col_display
static im_col_display *
dup_display( im_col_display *in ) throw( VError )
{
im_col_display *out;
if( !(out = IM_NEW( NULL, im_col_display )) )
verror();
*out = *in;
if( in->d_name )
if( !(out->d_name = strdup( in->d_name )) ) {
free_display( out );
verror( "out of memory" );
}
return( out );
}
// Remove lut
void VDisplay::refblock::cleanlut()
{
if( luts ) {
im_free( luts );
luts = 0;
}
}
// Remove attached things
void VDisplay::refblock::cleanref()
{
if( disp && priv ) {
free_display( disp );
disp = 0;
priv = 0;
}
cleanlut();
}
// Get ready to write to disp
void VDisplay::refblock::wready() throw( VError )
{
cleanlut();
if( !priv ) {
disp = dup_display( disp );
priv = 1;
}
}
// Check that luts are up-to-date
void VDisplay::refblock::cluts() throw( VError )
{
if( !luts )
if( !(luts = im_col_make_tables_RGB( NULL, disp )) )
verror();
}
VDisplay::~VDisplay()
{
ref->nrefs--;
if( !ref->nrefs )
delete ref;
}
VDisplay &VDisplay::operator=( const VDisplay &a )
{
ref->nrefs--;
if( ref->nrefs > 0 )
// Need fresh
ref = new refblock;
else
// Recycle old
ref->cleanref();
ref = a.ref;
ref->nrefs++;
return( *this );
}
VDisplay::VDisplay( const char *name ) throw( VError )
{
// Search for a matching name in the VIPS colour list
im_col_display *scr = im_col_display_name( name );
if( !scr ) {
VError err;
err.app( "VDisplay error: " );
err.app( "unknown display type \"" ).app( name ).app( "\"\n" );
err.app( "display should be one of:" );
for( int i = 0; (scr = im_col_displays( i )); i++ ) {
err.app( " \"" );
err.app( im_col_displays( i )->d_name );
err.app( "\"" );
}
err.app( "\n" );
throw( err );
}
// Install display
ref = new refblock;
ref->disp = scr;
}
VDisplay::VDisplay()
{
// Just use sRGB
ref = new refblock;
ref->disp = im_col_displays( 7 );
}
/*
Setters and getters. We used to have a lot of code of the form:
float &VDisplay::YCW()
{ ref->wready(); return( ((im_col_display*)ref->disp)->d_YCW ); }
This should be split to separate setters/getters so we can exploit const. Too
annoying to do this on such a useless class (I'm certain no one used these
functions anyway), fix in vips8.
*/
VIPS_NAMESPACE_END
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