started a wrapper for vips7 functions

have a go at automatically wrapping up a vips7 im_function as a vips8 class
2011-07-12 17:21:45 +01:00 · 2011-07-12 17:21:45 +01:00 · 516b76da7b
parent 2ee4fefa46
commit 516b76da7b
1 changed files with 148 additions and 0 deletions
--- a/libvips/deprecated/wrapvips7.c
+++ b/libvips/deprecated/wrapvips7.c
@ -0,0 +1,148 @@
+/* wrap a vips7 operation as a vips8 class
+ * 
+ * 12/7/11
+ * 	- quick hack
+ */
+
+/*
+
+    This file is part of VIPS.
+    
+    VIPS 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
+
+ */
+
+/*
+#define VIPS_DEBUG
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /*HAVE_CONFIG_H*/
+#include <vips/intl.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <vips/vips.h>
+#include <vips/internal.h>
+#include <vips/debug.h>
+#include <vips/vector.h>
+
+#ifdef WITH_DMALLOC
+#include <dmalloc.h>
+#endif /*WITH_DMALLOC*/
+
+#define VIPS7_PREFIX "Vips7_"
+
+static GHashTable *vips7_types = NULL;
+
+typedef VipsOperation VipsVips7;
+typedef VipsOperationClass VipsVips7Class;
+
+static int
+vips_vips7_build( VipsObject *object )
+{
+	VipsVips7 *vips7 = VIPS_VIPS7( object );
+
+	if( VIPS_OBJECT_CLASS( parent_class )->build( object ) )
+		return( -1 );
+
+	return( 0 );
+}
+
+static void
+vips_vips7_class_init( VipsVips7Class *class )
+{
+	/* The name of the vips operation we wrap is hidden in our class name.
+	 */
+	const char *name = G_OBJECT_CLASS_NAME( class ) + 
+		strlen( VIPS7_PREFIX );
+
+	VipsObjectClass *object_class = (VipsObjectClass *) class;
+	VipsOperationClass *oclass = VIPS_OPERATION_CLASS( class );
+
+	im_function *fn = im_find_function( name );
+
+	int i;
+
+	g_assert( fn );
+
+	gobject_class->set_property = vips_object_set_property;
+	gobject_class->get_property = vips_object_get_property;
+
+	vobject_class->build = vips_vips7_build;
+
+	object_class->nickname = name;
+	object_class->description = fn->desc;
+
+	for( i = 0; i < fn->argc; i++ ) {
+		GParamSpec *pspec;
+
+		pspec = g_param_spec_object( "out", "Output", 
+			_( "Output image" ),
+			VIPS_TYPE_IMAGE,
+			G_PARAM_READWRITE );
+		g_object_class_install_property( gobject_class, 
+			PROP_OUTPUT, pspec );
+		vips_object_class_install_argument( vobject_class, pspec,
+			VIPS_ARGUMENT_REQUIRED_OUTPUT, 
+			G_STRUCT_OFFSET( VipsArithmetic, output ) );
+	}
+}
+
+static void
+vips_vips7_init( VipsVips7 *vips7 )
+{
+}
+
+static GType
+vips_get_type( im_function *fn )
+{
+	static const GTypeInfo info = {
+		sizeof( VipsVips7Class ),
+		NULL,           /* base_init */
+		NULL,           /* base_finalize */
+		(GClassInitFunc) vips_vips7_class_init,
+		NULL,           /* class_finalize */
+		NULL,           /* class_data */
+		sizeof( VipsVips7 ),
+		32,             /* n_preallocs */
+		(GInstanceInitFunc) vips_vips7_init,
+	};
+
+	char name[256];
+	GType type;
+
+	if( !vips7_types )
+		vips7_types = g_hash_table_new( g_direct_hash, g_direct_equal );
+
+	if( (type = g_hash_table_lookup( vips7_types, fn )) )
+		return( type );
+
+	im_snprintf( name, 256, VIPS7_PREFIX "%s", fn->name );
+	type = g_type_register_static( VIPS_OPERATION, name, &info, 0 );
+	g_hash_table_insert( vips7_types, fn, type );
+
+	return( type );
+}
+