115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
/* VIPS display class.
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*
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* Hide details of im_col_display API.
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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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#ifndef IM_VDISPLAY_H
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#define IM_VDISPLAY_H
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/* SWIG includes this file directly rather than going through vipscpp.h ... so
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* we have to define these macros here as well.
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*/
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#ifdef SWIG
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#define VIPS_NAMESPACE_START namespace vips {
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#define VIPS_NAMESPACE_END }
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#endif /*SWIG*/
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/* Wrap pointers to these, but we don't want to import all the old C API. Just
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* declare them.
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*/
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extern "C" {
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struct im_col_display;
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struct im_col_tab_disp;
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}
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VIPS_NAMESPACE_START
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// Wrapper over im_col_display with ref counting
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class VDisplay {
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struct refblock {
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im_col_display *disp; // im_col_display struct
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im_col_tab_disp *luts; // luts built from this display
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int priv; // disp is ours, or system
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int nrefs; // Refs to us
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// Invalidate lut
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void cleanlut();
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// Break attached stuff
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void cleanref();
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// Get ready to write
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void wready() throw( VError );
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// Check that luts are up-to-date
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void cluts() throw( VError );
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refblock() : disp(0), luts(0), priv(0), nrefs(1) {}
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~refblock() { cleanref(); }
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};
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refblock *ref;
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public:
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enum VDisplayType {
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BARCO, // Does many corrections for us
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DUMB // Needs many corrections
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};
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// Get named display
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VDisplay( const char *name ) throw( VError );
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// Get default display
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VDisplay();
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// Copy constructor
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VDisplay( const VDisplay &a ) { ref = a.ref; ref->nrefs++; }
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// Assignment
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VDisplay &operator=( const VDisplay &a );
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// Destructor
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virtual ~VDisplay();
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// The matrix type we use
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typedef float matrix[3][3];
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// Extract display pointer
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void *disp() const { return( ref->disp ); }
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// Extract luts pointer, rebuilding luts if necessary
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im_col_tab_disp *luts() const throw( VError )
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{ ref->cluts(); return( ref->luts ); }
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};
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VIPS_NAMESPACE_END
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#endif /*IM_VDISPLAY_H*/
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