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gimp/plug-ins/common/header.c

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C
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/* The GIMP -- an 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 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 General Public License for more details.
*
* You should have received a copy of the GNU 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.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.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);
static gint save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID);
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ 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 of the file to save the image in" }
};
gimp_install_procedure ("file_header_save",
"saves files as C unsigned character array",
"FIXME: write help",
"Spencer Kimball & Peter Mattis",
"Spencer Kimball & Peter Mattis",
"1997",
N_("C source code header"),
"INDEXED, RGB",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_register_file_handler_mime ("file_header_save", "text/x-chdr");
gimp_register_save_handler ("file_header_save", "h", "");
}
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;
gint32 image_ID;
gint32 drawable_ID;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
run_mode = param[0].data.d_int32;
INIT_I18N ();
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
if (strcmp (name, "file_header_save") == 0)
{
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
/* eventually export the image */
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init ("header", FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, "Header",
(GIMP_EXPORT_CAN_HANDLE_RGB |
GIMP_EXPORT_CAN_HANDLE_INDEXED));
if (export == GIMP_EXPORT_CANCEL)
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
break;
default:
break;
}
if (! save_image (param[3].data.d_string, image_ID, drawable_ID))
{
status = GIMP_PDB_EXECUTION_ERROR;
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
values[0].data.d_status = status;
}
static int
save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID)
{
GimpPixelRgn pixel_rgn;
GimpDrawable *drawable;
GimpImageType drawable_type;
FILE *fp;
gint x, y, b, c;
gchar *backslash = "\\\\";
gchar *quote = "\\\"";
gchar *newline = "\"\n\t\"";
gchar buf[4];
guchar *d = NULL;
guchar *data;
guchar *cmap;
gint colors;
if ((fp = fopen (filename, "w")) == NULL)
return FALSE;
drawable = gimp_drawable_get (drawable_ID);
drawable_type = gimp_drawable_type (drawable_ID);
gimp_pixel_rgn_init (&pixel_rgn, drawable,
0, 0, drawable->width, drawable->height, FALSE, FALSE);
fprintf (fp, "/* GIMP header image file format (%s): %s */\n\n",
GIMP_RGB_IMAGE == drawable_type ? "RGB" : "INDEXED", filename);
fprintf (fp, "static unsigned int width = %d;\n", drawable->width);
fprintf (fp, "static unsigned int height = %d;\n\n", drawable->height);
fprintf (fp, "/* Call this macro repeatedly. After each use, the pixel data can be extracted */\n\n");
switch (drawable_type)
{
case GIMP_RGB_IMAGE:
fprintf (fp, "#define HEADER_PIXEL(data,pixel) {\\\n pixel[0] = (((data[0] - 33) << 2) | ((data[1] - 33) >> 4)); \\\n pixel[1] = ((((data[1] - 33) & 0xF) << 4) | ((data[2] - 33) >> 2)); \\\n pixel[2] = ((((data[2] - 33) & 0x3) << 6) | ((data[3] - 33))); \\\n data += 4; \\\n}\n");
fprintf (fp, "static char *header_data =\n\t\"");
data = g_new (guchar, drawable->width * drawable->bpp);
c = 0;
for (y = 0; y < drawable->height; y++)
{
gimp_pixel_rgn_get_row (&pixel_rgn, data, 0, y, drawable->width);
for (x = 0; x < drawable->width; x++)
{
d = data + x * drawable->bpp;
buf[0] = ((d[0] >> 2) & 0x3F) + 33;
buf[1] = ((((d[0] & 0x3) << 4) | (d[1] >> 4)) & 0x3F) + 33;
buf[2] = ((((d[1] & 0xF) << 2) | (d[2] >> 6)) & 0x3F) + 33;
buf[3] = (d[2] & 0x3F) + 33;
for (b = 0; b < 4; b++)
if (buf[b] == '"')
fwrite (quote, 1, 2, fp);
else if (buf[b] == '\\')
fwrite (backslash, 1, 2, fp);
else
fwrite (buf + b, 1, 1, fp);
c++;
if (c >= 16)
{
fwrite (newline, 1, 4, fp);
c = 0;
}
}
}
fprintf (fp, "\";\n");
break;
case GIMP_INDEXED_IMAGE:
fprintf (fp, "#define HEADER_PIXEL(data,pixel) {\\\n pixel[0] = header_data_cmap[(unsigned char)data[0]][0]; \\\n pixel[1] = header_data_cmap[(unsigned char)data[0]][1]; \\\n pixel[2] = header_data_cmap[(unsigned char)data[0]][2]; \\\n data ++; }\n\n");
/* save colormap */
cmap = gimp_image_get_colormap (image_ID, &colors);
fprintf (fp, "static char header_data_cmap[256][3] = {");
fprintf(fp, "\n\t{%3d,%3d,%3d}", (int)cmap[0], (int)cmap[1], (int)cmap[2]);
for (c = 1; c < colors; c++)
fprintf(fp, ",\n\t{%3d,%3d,%3d}", (int)cmap[3*c], (int)cmap[3*c+1], (int)cmap[3*c+2]);
/* fill the rest */
for ( ; c < 256; c++)
fprintf(fp, ",\n\t{255,255,255}");
/* close bracket */
fprintf(fp, "\n\t};\n");
g_free(cmap);
/* save image */
fprintf (fp, "static char header_data[] = {\n\t");
data = g_new (guchar, drawable->width * drawable->bpp);
c = 0;
for (y = 0; y < drawable->height; y++)
{
gimp_pixel_rgn_get_row (&pixel_rgn, data, 0, y, drawable->width);
for (x = 0; x < drawable->width-1; x++)
{
d = data + x * drawable->bpp;
fprintf(fp, "%d,", (int)d[0]);
c++;
if (c >= 16)
{
fprintf (fp, "\n\t");
c = 0;
}
}
if (y != drawable->height - 1)
fprintf(fp, "%d,\n\t", (int)d[1]);
else
fprintf(fp, "%d\n\t", (int)d[1]);
c = 0; /* reset line counter */
}
fprintf (fp, "};\n");
break;
default:
g_warning ("unhandled drawable type (%d)", drawable_type);
return FALSE;
} /* switch (drawable_type) */
fclose (fp);
g_free (data);
gimp_drawable_detach (drawable);
return TRUE;
}
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