505 lines
11 KiB
C++
505 lines
11 KiB
C++
// Object part of VImage class
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/*
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Copyright (C) 1991-2001 The National Gallery
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This program 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <cstdlib>
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#include <cstring>
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#include <cstdio>
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#include <vips/vips.h>
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#include <vips/internal.h>
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#include <vips/debug.h>
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#include <vipsCC/vipscpp.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/*
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#define DEBUG
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*/
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VIPS_NAMESPACE_START
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void VImage::refblock::debug_print()
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{
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std::list<refblock *>::iterator i;
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printf( "refblock %p:\n", this );
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printf( " im = %p", im );
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if( im && im->filename )
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printf( " (im->filename = \"%s\")", im->filename );
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printf( "\n" );
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printf( " close_on_delete = %d\n", close_on_delete );
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printf( " nrefs (refs to us) = %d\n", nrefs );
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printf( " orefs (refs we make) = refblocks " );
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for( i = orefs.begin(); i != orefs.end(); i++ )
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printf( "%p ", *i );
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printf( "\n" );
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}
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// dump all refblocks for debugging
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void VImage::print_all()
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{
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#ifdef DEBUG
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std::list<VImage::refblock *>::iterator i;
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printf( "*** VImage::refblock::print_all() start\n" );
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for( i = all_refblock.begin(); i != all_refblock.end(); i++ )
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(*i)->debug_print();
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printf( "*** VImage::refblock::print_all() end\n" );
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#endif /*DEBUG*/
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}
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// easy call from C version
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void im__ccp_print_all()
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{
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VImage::print_all();
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}
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// constructor
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VImage::refblock::refblock()
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{
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im = 0;
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close_on_delete = 1;
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nrefs = 1;
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#ifdef DEBUG
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all_refblock.push_front( this );
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#endif /*DEBUG*/
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}
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// Add a ref - this (output image) depends upon VipsImage in
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void VImage::refblock::addref( refblock *in ) throw( VError )
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{
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if( this == in )
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verror( "sanity failure" );
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in->nrefs++;
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orefs.push_front( in );
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}
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VImage::refblock::~refblock() throw( VError )
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{
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#ifdef DEBUG
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printf( "VImage::refblock::removeref(): death!\n" );
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debug_print();
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#endif /*DEBUG*/
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std::list<refblock *>::iterator i;
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if( close_on_delete && im ) {
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if( im_close( im ) )
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verror();
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im = 0;
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}
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// remove any refs we have ... may trigger other destructs in turn
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for( i = orefs.begin(); i != orefs.end(); i++ )
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(*i)->removeref();
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#ifdef DEBUG
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all_refblock.remove( this );
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#endif /*DEBUG*/
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}
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// Remove a ref
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void VImage::refblock::removeref() throw( VError )
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{
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nrefs--;
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if( nrefs < 0 )
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verror( "too many closes!" );
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if( nrefs == 0 )
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delete this;
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}
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// Init with name ... mode defaults to "r"
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VImage::VImage( const char *name, const char *mode ) throw( VError )
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{
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_ref = new refblock;
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if( !(_ref->im = im_open( name, mode )) )
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verror();
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_ref->close_on_delete = 1;
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#ifdef DEBUG
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printf( "VImage::VImage( \"%s\", \"%s\" )\n", name, mode );
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_ref->debug_print();
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#endif /*DEBUG*/
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}
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// Build a VImage from an VipsImage structure
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VImage::VImage( _VipsImage *in )
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{
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_ref = new refblock;
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_ref->im = in;
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_ref->close_on_delete = 0;
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#ifdef DEBUG
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printf( "VImage::VImage( VipsImage* %p )\n", in );
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_ref->debug_print();
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#endif /*DEBUG*/
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}
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// Build from memory buffer
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VImage::VImage( void *buffer, int width, int height,
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int bands, TBandFmt format ) throw( VError )
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{
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_ref = new refblock;
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if( !(_ref->im = im_image( buffer, width, height,
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bands, VipsBandFmt( format ) )) )
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verror();
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_ref->close_on_delete = 1;
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#ifdef DEBUG
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printf( "VImage::VImage( void* %p, %d, %d )\n",
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buffer, width, height );
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_ref->debug_print();
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#endif /*DEBUG*/
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}
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// Empty init ... means open intermediate
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VImage::VImage() throw( VError )
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{
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static int id = 0;
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char filename[256];
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_ref = new refblock;
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/* This is not 100% safe if VIPS threading is not implemented on this
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* platform ... but it doesn't really matter.
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*/
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g_mutex_lock( im__global_lock );
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im_snprintf( filename, 256, "intermediate image #%d", id++ );
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g_mutex_unlock( im__global_lock );
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if( !(_ref->im = im_open( filename, "p" )) )
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verror();
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_ref->close_on_delete = 1;
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#ifdef DEBUG
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printf( "VImage::VImage()\n" );
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_ref->debug_print();
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#endif /*DEBUG*/
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}
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// Copy constructor
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VImage::VImage( const VImage &a )
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{
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_ref = a._ref;
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_ref->nrefs++;
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}
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// Assignment
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VImage &VImage::operator=( const VImage &a ) throw( VError )
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{
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_ref->removeref();
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_ref = a._ref;
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_ref->nrefs++;
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return( *this );
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}
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// Extract underlying data pointer
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void *VImage::data() const throw( VError )
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{
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if( im_incheck( _ref->im ) )
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verror();
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return( (void *) _ref->im->data );
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}
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void VImage::debug_print()
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{
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im_printdesc( image() );
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}
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// Like jpeg2vips, but convert to a disc file rather than to memory
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// We can handle huge files without running out of RAM
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VImage VImage::convert2disc( const char* convert,
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const char* in, const char* disc ) throw( VError )
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{
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VImage out( disc, "w" );
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Vargv _vec( convert );
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_vec.data(0) = (im_object) in;
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_vec.data(1) = out.image();
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_vec.call();
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return( out );
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}
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// Write this to a VImage
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VImage VImage::write( VImage out ) throw( VError )
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{
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if( im_copy( _ref->im, out._ref->im ) )
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verror();
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out._ref->addref( _ref );
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return( out );
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}
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VImage VImage::write( const char *name ) throw( VError )
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{
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VImage out( name, "w" );
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if( im_copy( _ref->im, out._ref->im ) )
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verror();
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out._ref->addref( _ref );
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return( out );
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}
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VImage VImage::write() throw( VError )
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{
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VImage out( "VImage:w1", "t" );
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if( im_copy( _ref->im, out._ref->im ) )
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verror();
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out._ref->addref( _ref );
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return( out );
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}
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// Projection functions to get header fields
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int VImage::Xsize() { return( _ref->im->Xsize ); }
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int VImage::Ysize() { return( _ref->im->Ysize ); }
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int VImage::Bands() { return( _ref->im->Bands ); }
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VImage::TBandFmt VImage::BandFmt()
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{ return( (TBandFmt) _ref->im->BandFmt ); }
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VImage::TCoding VImage::Coding()
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{ return( (TCoding) _ref->im->Coding ); }
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VImage::TType VImage::Type() { return( (TType) _ref->im->Type ); }
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float VImage::Xres() { return( _ref->im->Xres ); }
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float VImage::Yres() { return( _ref->im->Yres ); }
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int VImage::Length() { return( _ref->im->Length ); }
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VImage::TCompression VImage::Compression()
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{ return( (TCompression) _ref->im->Compression ); }
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short VImage::Level() { return( _ref->im->Level ); }
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int VImage::Xoffset() { return( _ref->im->Xoffset ); }
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int VImage::Yoffset() { return( _ref->im->Yoffset ); }
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// Derived fields
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const char *VImage::filename() { return( _ref->im->filename ); }
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const char *VImage::Hist() { return( im_history_get( _ref->im ) ); }
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// metadata
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// base functionality
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void VImage::meta_set( const char *field, GValue *value ) throw( VError )
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{
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if( im_meta_set( _ref->im, field, value ) )
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verror();
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}
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void VImage::meta_get( const char *field, GValue *value_copy ) throw( VError )
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{
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if( im_meta_get( _ref->im, field, value_copy ) )
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verror();
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}
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GType VImage::meta_get_typeof( const char *field ) throw( VError )
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{
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return( im_meta_get_typeof( _ref->im, field ) );
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}
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// convenience functions
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int VImage::meta_get_int( const char *field )
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throw( VError )
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{
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int result;
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if( im_meta_get_int( _ref->im, field, &result ) )
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verror();
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return( result );
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}
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double VImage::meta_get_double( const char *field )
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throw( VError )
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{
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double result;
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if( im_meta_get_double( _ref->im, field, &result ) )
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verror();
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return( result );
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}
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const char *VImage::meta_get_string( const char *field )
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throw( VError )
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{
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char *result;
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if( im_meta_get_string( _ref->im, field, &result ) )
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verror();
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return( result );
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}
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void *VImage::meta_get_area( const char *field ) throw( VError )
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{
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void *result;
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if( im_meta_get_area( _ref->im, field, &result ) )
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verror();
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return( result );
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}
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void *VImage::meta_get_blob( const char *field, size_t *length ) throw( VError )
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{
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void *result;
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if( im_meta_get_blob( _ref->im, field, &result, length ) )
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verror();
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return( result );
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}
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void VImage::meta_set( const char *field, int value )
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throw( VError )
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{
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if( im_meta_set_int( _ref->im, field, value ) )
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verror();
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}
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void VImage::meta_set( const char *field, double value )
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throw( VError )
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{
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if( im_meta_set_double( _ref->im, field, value ) )
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verror();
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}
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void VImage::meta_set( const char *field, const char *value )
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throw( VError )
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{
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if( im_meta_set_string( _ref->im, field, value ) )
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verror();
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}
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void VImage::meta_set( const char *field,
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VCallback free_fn, void *value )
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throw( VError )
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{
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if( im_meta_set_area( _ref->im, field, free_fn, value ) )
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verror();
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}
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void VImage::meta_set( const char *field,
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VCallback free_fn, void *value, size_t length )
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throw( VError )
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{
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if( im_meta_set_blob( _ref->im, field, free_fn, value, length ) )
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verror();
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}
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// Set header fields and setbuf() in one go.
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void VImage::initdesc( int x, int y, int b,
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TBandFmt f, TCoding c, TType t, float xr, float yr, int xo, int yo )
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throw( VError )
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{
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im_initdesc( _ref->im, x, y, b, 0,
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VipsBandFmt( f ), VipsCoding( c ), VipsType( t ),
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xr, yr, xo, yo );
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if( im_setupout( _ref->im ) )
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verror();
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}
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// Create a Vargv from a name
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Vargv::Vargv( const char *name )
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{
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im_function *f = im_find_function( (char *) name );
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if( !f )
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verror();
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fn = (im__function *) f;
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base = new im_object[f->argc];
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if( im_allocate_vargv( f, base ) ) {
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delete[] base;
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verror();
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}
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}
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// Destroy a Vargv
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Vargv::~Vargv()
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{
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im_function *f = (im_function *) fn;
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// free any memory allocated for input vectors
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// this is the stuff allocated in each function during _object* build,
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// see vipsc++.cc
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for( int i = 0; i < f->argc; i++ ) {
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im_type_desc *ty = f->argv[i].desc;
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if( !(ty->flags & IM_TYPE_OUTPUT) ) {
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if( strcmp( ty->type, IM_TYPE_IMAGEVEC ) == 0 ||
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strcmp( ty->type, IM_TYPE_DOUBLEVEC ) == 0 ||
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strcmp( ty->type, IM_TYPE_INTVEC ) == 0 ) {
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// will work for doublevec and intvec too
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im_imagevec_object *io =
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(im_imagevec_object *) base[i];
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if( io->vec ) {
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delete[] io->vec;
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io->vec = NULL;
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}
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}
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}
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}
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im_free_vargv( f, base );
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delete[] base;
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}
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// Call the function
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void
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Vargv::call()
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{
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im_function *f = (im_function *) fn;
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if( f->disp( base ) )
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verror();
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}
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/* Insert automatically generated wrappers for VIPS image processing
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* functions.
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*/
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#include "vipsc++.cc"
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VIPS_NAMESPACE_END
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