text: /* save to rad
   *
   * 2/12/11
   * 	- wrap a class around the rad writer
   */
  
  /*
  
      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., 51 Franklin Street, Fifth Floor, Boston, MA
      02110-1301  USA
  
   */
  
  /*
  
      These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
  
   */
  
  /*
  #define DEBUG_VERBOSE
  #define 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 "radiance.h"
  
  typedef struct _VipsForeignSaveRad {
  	VipsForeignSave parent_object;
  
  	char *filename; 
  } VipsForeignSaveRad;
  
  typedef VipsForeignSaveClass VipsForeignSaveRadClass;
  
  G_DEFINE_TYPE( VipsForeignSaveRad, vips_foreign_save_rad, 
  	VIPS_TYPE_FOREIGN_SAVE );
  
  static int
  vips_foreign_save_rad_build( VipsObject *object )
  {
  	VipsForeignSave *save = (VipsForeignSave *) object;
  	VipsForeignSaveRad *rad = (VipsForeignSaveRad *) object;
  
  	if( VIPS_OBJECT_CLASS( vips_foreign_save_rad_parent_class )->
  		build( object ) )
  		return( -1 );
  
  	if( vips__rad_save( save->ready, rad->filename ) )
  		return( -1 );
  
  	return( 0 );
  }
  
  /* Save a bit of typing.
   */
  #define UC VIPS_FORMAT_UCHAR
  #define C VIPS_FORMAT_CHAR
  #define US VIPS_FORMAT_USHORT
  #define S VIPS_FORMAT_SHORT
  #define UI VIPS_FORMAT_UINT
  #define I VIPS_FORMAT_INT
  #define F VIPS_FORMAT_FLOAT
  #define X VIPS_FORMAT_COMPLEX
  #define D VIPS_FORMAT_DOUBLE
  #define DX VIPS_FORMAT_DPCOMPLEX
  
  static int vips_foreign_save_rad_format_table[10] = {
  /* UC  C   US  S   UI  I   F   X   D   DX */
     F,  F,  F,  F,  F,  F,  F,  F,  F,  F
  };
  
  static void
  vips_foreign_save_rad_class_init( VipsForeignSaveRadClass *class )
  {
  	GObjectClass *gobject_class = G_OBJECT_CLASS( class );
  	VipsObjectClass *object_class = (VipsObjectClass *) class;
  	VipsForeignClass *foreign_class = (VipsForeignClass *) class;
  	VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;
  
  	gobject_class->set_property = vips_object_set_property;
  	gobject_class->get_property = vips_object_get_property;
  
  	object_class->nickname = "radsave";
  	object_class->description = _( "save image to Radiance file" );
  	object_class->build = vips_foreign_save_rad_build;
  
  	foreign_class->suffs = vips__rad_suffs;
  
  	save_class->saveable = VIPS_SAVEABLE_RGB;
  	save_class->format_table = vips_foreign_save_rad_format_table;
  	save_class->coding[VIPS_CODING_NONE] = FALSE;
  	save_class->coding[VIPS_CODING_RAD] = TRUE;
  
  	VIPS_ARG_STRING( class, "filename", 1, 
  		_( "Filename" ),
  		_( "Filename to save to" ),
  		VIPS_ARGUMENT_REQUIRED_INPUT, 
  		G_STRUCT_OFFSET( VipsForeignSaveRad, filename ),
  		NULL );
  }
  
  static void
  vips_foreign_save_rad_init( VipsForeignSaveRad *rad )
  {
  }
  
  /**
   * vips_radsave:
   * @in: image to save 
   * @filename: file to write to
   * @...: %NULL-terminated list of optional named arguments
   *
   * Write a VIPS image in Radiance (HDR) format.
   *
   * Sections of this reader from Greg Ward and Radiance with kind permission. 
   *
   * See also: vips_image_write_to_file().
   *
   * Returns: 0 on success, -1 on error.
   */
  int
  vips_radsave( VipsImage *in, const char *filename, ... )
  {
  	va_list ap;
  	int result;
  
  	va_start( ap, filename );
  	result = vips_call_split( "radsave", ap, in, filename );
  	va_end( ap );
  
  	return( result );
  }
  