149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
/* load vips from a file
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*
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* 24/11/11
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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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/*
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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 <vips/vips.h>
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#include <vips/internal.h>
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typedef struct _VipsForeignLoadVips {
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VipsForeignLoad parent_object;
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char *filename;
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} VipsForeignLoadVips;
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typedef VipsForeignLoadClass VipsForeignLoadVipsClass;
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G_DEFINE_TYPE( VipsForeignLoadVips, vips_foreign_load_vips,
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VIPS_TYPE_FOREIGN_LOAD );
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static gboolean
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vips_foreign_load_vips_is_a( const char *filename )
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{
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return( vips__file_magic( filename ) );
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}
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static VipsForeignFlags
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vips_foreign_load_vips_get_flags_filename( const char *filename )
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{
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VipsForeignFlags flags;
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flags = VIPS_FOREIGN_PARTIAL;
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if( vips__file_magic( filename ) == VIPS_MAGIC_SPARC )
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flags |= VIPS_FOREIGN_BIGENDIAN;
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return( flags );
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}
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static VipsForeignFlags
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vips_foreign_load_vips_get_flags( VipsForeignLoad *load )
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{
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VipsForeignLoadVips *vips = (VipsForeignLoadVips *) load;
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return( vips_foreign_load_vips_get_flags_filename( vips->filename ) );
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}
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static int
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vips_foreign_load_vips_header( VipsForeignLoad *load )
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{
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VipsForeignLoadVips *vips = (VipsForeignLoadVips *) load;
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VipsImage *out;
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VipsImage *out2;
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if( !(out2 = vips_image_new_mode( vips->filename, "r" )) )
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return( -1 );
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/* Remove the @out that's there now.
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*/
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g_object_get( load, "out", &out, NULL );
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g_object_unref( out );
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g_object_unref( out );
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g_object_set( load, "out", out2, NULL );
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return( 0 );
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}
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const char *vips__suffs[] = { ".v", ".vips", NULL };
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static void
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vips_foreign_load_vips_class_init( VipsForeignLoadVipsClass *class )
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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VipsForeignClass *foreign_class = (VipsForeignClass *) class;
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VipsForeignLoadClass *load_class = (VipsForeignLoadClass *) 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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object_class->nickname = "vipsload";
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object_class->description = _( "load vips from file" );
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foreign_class->suffs = vips__suffs;
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/* We are fast at is_a(), so high priority.
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*/
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foreign_class->priority = 200;
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load_class->is_a = vips_foreign_load_vips_is_a;
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load_class->get_flags = vips_foreign_load_vips_get_flags;
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load_class->get_flags_filename =
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vips_foreign_load_vips_get_flags_filename;
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load_class->header = vips_foreign_load_vips_header;
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load_class->load = NULL;
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VIPS_ARG_STRING( class, "filename", 1,
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_( "Filename" ),
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_( "Filename to load from" ),
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VIPS_ARGUMENT_REQUIRED_INPUT,
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G_STRUCT_OFFSET( VipsForeignLoadVips, filename ),
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NULL );
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}
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static void
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vips_foreign_load_vips_init( VipsForeignLoadVips *vips )
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{
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}
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