212 lines
5.6 KiB
C
212 lines
5.6 KiB
C
/* load openslide from a file
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*
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* 5/12/11
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* - from openslideload.c
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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., 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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/*
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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 <string.h>
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#include <vips/vips.h>
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#include <vips/buf.h>
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#include <vips/internal.h>
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#include "openslide2vips.h"
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typedef struct _VipsForeignLoadOpenslide {
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VipsForeignLoad parent_object;
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/* Filename for load.
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*/
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char *filename;
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/* Load this layer.
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*/
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int layer;
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/* Load this associated image.
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*/
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char *associated;
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} VipsForeignLoadOpenslide;
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typedef VipsForeignLoadClass VipsForeignLoadOpenslideClass;
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G_DEFINE_TYPE( VipsForeignLoadOpenslide, vips_foreign_load_openslide,
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VIPS_TYPE_FOREIGN_LOAD );
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static VipsForeignFlags
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vips_foreign_load_openslide_get_flags( VipsForeignLoad *load )
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{
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VipsForeignLoadOpenslide *openslide = (VipsForeignLoadOpenslide *) load;
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VipsForeignFlags flags;
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flags = 0;
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if( !openslide->associated )
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flags |= VIPS_FOREIGN_PARTIAL;
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return( flags );
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}
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static int
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vips_foreign_load_openslide_header( VipsForeignLoad *load )
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{
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VipsForeignLoadOpenslide *openslide = (VipsForeignLoadOpenslide *) load;
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if( vips__openslide_read_header( openslide->filename, load->out,
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openslide->layer, openslide->associated ) )
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return( -1 );
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return( 0 );
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}
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static int
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vips_foreign_load_openslide_load( VipsForeignLoad *load )
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{
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VipsForeignLoadOpenslide *openslide = (VipsForeignLoadOpenslide *) load;
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if( !openslide->associated ) {
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if( vips__openslide_read( openslide->filename, load->real,
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openslide->layer ) )
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return( -1 );
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}
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else {
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if( vips__openslide_read_associated(
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openslide->filename, load->real,
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openslide->associated ) )
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return( -1 );
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}
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return( 0 );
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}
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static void
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vips_foreign_load_openslide_class_init( VipsForeignLoadOpenslideClass *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 = "openslideload";
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object_class->description = _( "load file with OpenSlide" );
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/* We need to be ahead of the tiff sniffer since many OpenSlide
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* formats are tiff derivatives. If we see a tiff which would be
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* better handled by the vips tiff loader we are careful to say no.
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*/
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foreign_class->priority = 100;
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load_class->is_a = vips__openslide_isslide;
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load_class->get_flags = vips_foreign_load_openslide_get_flags;
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load_class->header = vips_foreign_load_openslide_header;
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load_class->load = vips_foreign_load_openslide_load;
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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( VipsForeignLoadOpenslide, filename ),
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NULL );
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VIPS_ARG_INT( class, "layer", 10,
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_( "Layer" ),
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_( "Load this layer from the file" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignLoadOpenslide, layer ),
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0, 100000, 0 );
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VIPS_ARG_STRING( class, "associated", 11,
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_( "Associated" ),
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_( "Load this associated image" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignLoadOpenslide, associated ),
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NULL );
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}
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static void
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vips_foreign_load_openslide_init( VipsForeignLoadOpenslide *openslide )
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{
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}
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/**
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* vips_openslideload:
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* @filename: file to load
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* @out: decompressed image
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* @layer: load this layer
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* @associated: load this associated image
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* @...: %NULL-terminated list of optional named arguments
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*
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* Read a virtual slide supported by the OpenSlide library into a VIPS image.
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* OpenSlide supports images in Aperio, Hamamatsu VMS, Hamamatsu VMU, MIRAX,
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* and Trestle formats.
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*
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* To facilitate zooming, virtual slide formats include multiple scaled-down
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* versions of the high-resolution image. These are typically called
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* "levels", though OpenSlide and im_openslide2vips() call them "layers".
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* By default, vips_openslideload() reads the highest-resolution layer
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* (layer 0). Set @layer to the layer number you want.
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*
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* In addition to the slide image itself, virtual slide formats sometimes
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* include additional images, such as a scan of the slide's barcode.
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* OpenSlide calls these "associated images". To read an associated image,
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* set @associated to the image's.
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* A slide's associated images are listed in the
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* "slide-associated-images" metadata item.
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*
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* See also: vips_image_new_from_file().
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*
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* Returns: 0 on success, -1 on error.
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*/
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int
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vips_openslideload( const char *filename, VipsImage **out, ... )
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{
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va_list ap;
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int result;
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va_start( ap, out );
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result = vips_call_split( "openslideload", ap, filename, out );
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va_end( ap );
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return( result );
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}
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