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gimp/plug-ins/common/file-header.c

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/* 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 <string.h>
#include <glib/gstdio.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define SAVE_PROC "file-header-save"
#define PLUG_IN_BINARY "file-header"
#define PLUG_IN_ROLE "gimp-file-header"
/* 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 gboolean save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID);
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 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 of the file to save the image in" }
};
gimp_install_procedure (SAVE_PROC,
"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 (SAVE_PROC, "text/x-chdr");
gimp_register_save_handler (SAVE_PROC, "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;
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, SAVE_PROC) == 0)
{
gint32 image_ID;
gint32 drawable_ID;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
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 (PLUG_IN_BINARY, 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 gboolean
save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID)
{
GeglBuffer *buffer;
const Babl *format;
GimpImageType drawable_type;
FILE *fp;
gint x, y, b, c;
const gchar *backslash = "\\\\";
const gchar *quote = "\\\"";
const gchar *newline = "\"\n\t\"";
gchar buf[4];
guchar *d = NULL;
guchar *data = NULL;
guchar *cmap;
gint colors;
gint width;
gint height;
if ((fp = g_fopen (filename, "w")) == NULL)
return FALSE;
buffer = gimp_drawable_get_buffer (drawable_ID);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
drawable_type = gimp_drawable_type (drawable_ID);
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", width);
fprintf (fp, "static unsigned int height = %d;\n\n", 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\"");
format = babl_format ("R'G'B' u8");
data = g_new (guchar, width * babl_format_get_bytes_per_pixel (format));
c = 0;
for (y = 0; y < height; y++)
{
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, y, width, 1), 1.0,
format, data,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (x = 0; x < width; x++)
{
d = data + x * babl_format_get_bytes_per_pixel (format);
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, width * 1);
c = 0;
for (y = 0; y < height; y++)
{
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, y, width, 1), 1.0,
NULL, data,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (x = 0; x < width -1; x++)
{
d = data + x * 1;
fprintf (fp, "%d,", (int)d[0]);
c++;
if (c >= 16)
{
fprintf (fp, "\n\t");
c = 0;
}
}
if (y != 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);
fclose (fp);
g_free (data);
return FALSE;
}
fclose (fp);
g_free (data);
g_object_unref (buffer);
return TRUE;
}
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