gimp/plug-ins/file-bmp/bmp.c

/* bmp.c                                          */
/* Version 0.52                                   */
/* This is a File input and output filter for the */
/* Gimp. It loads and saves images in windows(TM) */
/* bitmap format.                                 */
/* Some Parts that deal with the interaction with */
/* GIMP are taken from the GIF plugin by          */
/* Peter Mattis & Spencer Kimball and from the    */
/* PCX plugin by Francisco Bustamante.            */
/*                                                */
/* Alexander.Schulz@stud.uni-karlsruhe.de         */

/* Changes:   28.11.1997 Noninteractive operation */
/*            16.03.1998 Endian-independent!!     */
/*            21.03.1998 Little Bug-fix           */
/*            06.04.1998 Bugfix in Padding        */
/*            11.04.1998 Arch. cleanup (-Wall)    */
/*                       Parses gtkrc             */
/*            14.04.1998 Another Bug in Padding   */
/*            28.04.1998 RLE-Encoding rewritten   */
/*            29.10.1998 Changes by Tor Lillqvist */
/*                       <tml@iki.fi> to support  */
/*                       16 and 32 bit images     */
/*            28.11.1998 Bug in RLE-read-padding  */
/*                       fixed.                   */
/*            19.12.1999 Resolution support added */
/*            06.05.2000 Overhaul for 16&24-bit   */
/*                       plus better OS/2 code    */
/*                       by njl195@zepler.org.uk  */
/*            29.06.2006 Full support for 16/32   */
/*                       bits bitmaps and support */
/*                       for alpha channel        */
/*                       by p.filiciak@zax.pl     */

/*
 * GIMP - The GNU Image Manipulation Program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * ----------------------------------------------------------------------------
 */

#include "config.h"

#include <stdlib.h>
#include <string.h>

#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>

#include "bmp.h"
#include "bmp-load.h"
#include "bmp-save.h"

#include "libgimp/stdplugins-intl.h"


/* Declare some local functions.
 */
static void   query (void);
static void   run   (const gchar      *name,
                     gint              nparams,
                     const GimpParam  *param,
                     gint             *nreturn_vals,
                     GimpParam       **return_vals);


const GimpPlugInInfo PLUG_IN_INFO =
{
  NULL,  /* init_proc  */
  NULL,  /* quit_proc  */
  query, /* query_proc */
  run,   /* run_proc   */
};


MAIN ()


static void
query (void)
{
  static const GimpParamDef load_args[] =
  {
    { GIMP_PDB_INT32,    "run-mode",     "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
    { GIMP_PDB_STRING,   "filename",     "The name of the file to load" },
    { GIMP_PDB_STRING,   "raw-filename", "The name entered" },
  };
  static const GimpParamDef load_return_vals[] =
  {
    { GIMP_PDB_IMAGE, "image", "Output image" },
  };

  static const GimpParamDef save_args[] =
  {
    { GIMP_PDB_INT32,    "run-mode",     "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
    { GIMP_PDB_IMAGE,    "image",        "Input image" },
    { GIMP_PDB_DRAWABLE, "drawable",     "Drawable to save" },
    { GIMP_PDB_STRING,   "filename",     "The name of the file to save the image in" },
    { GIMP_PDB_STRING,   "raw-filename", "The name entered" },
  };

  gimp_install_procedure (LOAD_PROC,
                          "Loads files of Windows BMP file format",
                          "Loads files of Windows BMP file format",
                          "Alexander Schulz",
                          "Alexander Schulz",
                          "1997",
                          N_("Windows BMP image"),
                          NULL,
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (load_args),
                          G_N_ELEMENTS (load_return_vals),
                          load_args, load_return_vals);

  gimp_register_file_handler_mime (LOAD_PROC, "image/bmp");
  gimp_register_magic_load_handler (LOAD_PROC,
                                    "bmp",
                                    "",
                                    "0,string,BM");

  gimp_install_procedure (SAVE_PROC,
                          "Saves files in Windows BMP file format",
                          "Saves files in Windows BMP file format",
                          "Alexander Schulz",
                          "Alexander Schulz",
                          "1997",
                          N_("Windows BMP image"),
                          "INDEXED, GRAY, RGB*",
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (save_args), 0,
                          save_args, NULL);

  gimp_register_file_handler_mime (SAVE_PROC, "image/bmp");
  gimp_register_save_handler (SAVE_PROC, "bmp", "");
}

static void
run (const gchar      *name,
     gint              nparams,
     const GimpParam  *param,
     gint             *nreturn_vals,
     GimpParam       **return_vals)
{
  static GimpParam   values[2];
  GimpRunMode        run_mode;
  GimpPDBStatusType  status = GIMP_PDB_SUCCESS;
  GError            *error  = NULL;

  INIT_I18N ();
  gegl_init (NULL, NULL);

  run_mode = param[0].data.d_int32;

  *nreturn_vals = 1;
  *return_vals  = values;

  values[0].type          = GIMP_PDB_STATUS;
  values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;

  if (strcmp (name, LOAD_PROC) == 0)
    {
      switch (run_mode)
        {
        case GIMP_RUN_INTERACTIVE:
          break;

        case GIMP_RUN_NONINTERACTIVE:
          /*  Make sure all the arguments are there!  */
          if (nparams != 3)
            status = GIMP_PDB_CALLING_ERROR;
          break;

        default:
          break;
        }

      if (status == GIMP_PDB_SUCCESS)
        {
          gint32 image_ID = load_image (param[1].data.d_string,
                                        &error);

          if (image_ID != -1)
            {
              *nreturn_vals = 2;
              values[1].type         = GIMP_PDB_IMAGE;
              values[1].data.d_image = image_ID;
            }
          else
            {
              status = GIMP_PDB_EXECUTION_ERROR;
            }
        }
    }
  else if (strcmp (name, SAVE_PROC) == 0)
    {
      gint32           image_ID    = param[1].data.d_int32;
      gint32           drawable_ID = param[2].data.d_int32;
      GimpExportReturn export      = GIMP_EXPORT_CANCEL;

      /*  eventually export the image */
      switch (run_mode)
        {
        case GIMP_RUN_INTERACTIVE:
        case GIMP_RUN_WITH_LAST_VALS:
          gimp_ui_init (PLUG_IN_BINARY, FALSE);

          export = gimp_export_image (&image_ID, &drawable_ID, "BMP",
                                      GIMP_EXPORT_CAN_HANDLE_RGB   |
                                      GIMP_EXPORT_CAN_HANDLE_GRAY  |
                                      GIMP_EXPORT_CAN_HANDLE_ALPHA |
                                      GIMP_EXPORT_CAN_HANDLE_INDEXED);

          if (export == GIMP_EXPORT_CANCEL)
            {
              values[0].data.d_status = GIMP_PDB_CANCEL;
              return;
            }
          break;

        case GIMP_RUN_NONINTERACTIVE:
          /*  Make sure all the arguments are there!  */
          if (nparams != 5)
            status = GIMP_PDB_CALLING_ERROR;
          break;

        default:
          break;
        }

      if (status == GIMP_PDB_SUCCESS)
        status = save_image (param[3].data.d_string,
                             image_ID, drawable_ID,
                             run_mode,
                             &error);

      if (export == GIMP_EXPORT_EXPORT)
        gimp_image_delete (image_ID);
    }
  else
    {
      status = GIMP_PDB_CALLING_ERROR;
    }

  if (status != GIMP_PDB_SUCCESS && error)
    {
      *nreturn_vals = 2;
      values[1].type          = GIMP_PDB_STRING;
      values[1].data.d_string = error->message;
    }

  values[0].data.d_status = status;
}