mirror of https://github.com/GNOME/gimp.git
434 lines
12 KiB
C
434 lines
12 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <libgimp/gimp.h>
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#include <libgimp/gimpui.h>
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#include "libgimp/stdplugins-intl.h"
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#define SAVE_PROC "file-header-save"
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#define PLUG_IN_BINARY "file-header"
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#define PLUG_IN_ROLE "gimp-file-header"
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/* Declare some local functions.
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*/
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static void query (void);
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static void run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals);
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static gboolean save_image (GFile *file,
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gint32 image_ID,
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gint32 drawable_ID,
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GError **error);
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static gboolean print (GOutputStream *output,
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GError **error,
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const gchar *format,
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...) G_GNUC_PRINTF (3, 4);
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const GimpPlugInInfo PLUG_IN_INFO =
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{
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NULL, /* init_proc */
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NULL, /* quit_proc */
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query, /* query_proc */
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run, /* run_proc */
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};
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MAIN ()
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static void
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query (void)
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{
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static const GimpParamDef save_args[] =
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{
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{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
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{ GIMP_PDB_IMAGE, "image", "Input image" },
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{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to save" },
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{ GIMP_PDB_STRING, "filename", "The name of the file to save the image in" },
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{ GIMP_PDB_STRING, "raw-filename", "The name of the file to save the image in" }
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};
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gimp_install_procedure (SAVE_PROC,
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"saves files as C unsigned character array",
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"FIXME: write help",
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"Spencer Kimball & Peter Mattis",
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"Spencer Kimball & Peter Mattis",
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"1997",
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N_("C source code header"),
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"INDEXED, RGB",
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GIMP_PLUGIN,
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G_N_ELEMENTS (save_args), 0,
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save_args, NULL);
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gimp_register_file_handler_mime (SAVE_PROC, "text/x-chdr");
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gimp_register_file_handler_uri (SAVE_PROC);
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gimp_register_save_handler (SAVE_PROC, "h", "");
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}
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static void
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run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals)
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{
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static GimpParam values[2];
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GimpRunMode run_mode;
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GimpPDBStatusType status = GIMP_PDB_SUCCESS;
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GError *error = NULL;
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INIT_I18N ();
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gegl_init (NULL, NULL);
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run_mode = param[0].data.d_int32;
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*nreturn_vals = 1;
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*return_vals = values;
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values[0].type = GIMP_PDB_STATUS;
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values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
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if (strcmp (name, SAVE_PROC) == 0)
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{
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gint32 image_ID;
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gint32 drawable_ID;
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GimpExportReturn export = GIMP_EXPORT_CANCEL;
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image_ID = param[1].data.d_int32;
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drawable_ID = param[2].data.d_int32;
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/* eventually export the image */
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switch (run_mode)
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{
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case GIMP_RUN_INTERACTIVE:
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case GIMP_RUN_WITH_LAST_VALS:
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gimp_ui_init (PLUG_IN_BINARY, FALSE);
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export = gimp_export_image (&image_ID, &drawable_ID, "Header",
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GIMP_EXPORT_CAN_HANDLE_RGB |
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GIMP_EXPORT_CAN_HANDLE_INDEXED);
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if (export == GIMP_EXPORT_CANCEL)
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{
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values[0].data.d_status = GIMP_PDB_CANCEL;
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return;
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}
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break;
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default:
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break;
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}
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if (! save_image (g_file_new_for_uri (param[3].data.d_string),
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image_ID, drawable_ID, &error))
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{
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status = GIMP_PDB_EXECUTION_ERROR;
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}
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if (export == GIMP_EXPORT_EXPORT)
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gimp_image_delete (image_ID);
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}
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else
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{
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status = GIMP_PDB_CALLING_ERROR;
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}
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if (status != GIMP_PDB_SUCCESS && error)
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{
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*nreturn_vals = 2;
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values[1].type = GIMP_PDB_STRING;
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values[1].data.d_string = error->message;
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}
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values[0].data.d_status = status;
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}
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static gboolean
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save_image (GFile *file,
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gint32 image_ID,
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gint32 drawable_ID,
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GError **error)
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{
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GeglBuffer *buffer;
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const Babl *format;
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GimpImageType drawable_type;
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GOutputStream *output;
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gint x, y, b, c;
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const gchar *backslash = "\\\\";
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const gchar *quote = "\\\"";
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const gchar *newline = "\"\n\t\"";
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gchar buf[4];
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guchar *d = NULL;
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guchar *data = NULL;
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guchar *cmap;
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gint colors;
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gint width;
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gint height;
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output = G_OUTPUT_STREAM (g_file_replace (file,
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NULL, FALSE, G_FILE_CREATE_NONE,
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NULL, error));
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if (output)
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{
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GOutputStream *buffered;
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buffered = g_buffered_output_stream_new (output);
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g_object_unref (output);
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output = buffered;
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}
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else
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{
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return FALSE;
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}
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buffer = gimp_drawable_get_buffer (drawable_ID);
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width = gegl_buffer_get_width (buffer);
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height = gegl_buffer_get_height (buffer);
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drawable_type = gimp_drawable_type (drawable_ID);
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if (! print (output, error,
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"/* GIMP header image file format (%s): %s */\n\n",
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GIMP_RGB_IMAGE == drawable_type ? "RGB" : "INDEXED",
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gimp_file_get_utf8_name (file)) ||
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! print (output, error,
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"static unsigned int width = %d;\n", width) ||
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! print (output, error,
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"static unsigned int height = %d;\n\n", height) ||
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! print (output, error,
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"/* Call this macro repeatedly. After each use, the pixel data can be extracted */\n\n"))
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{
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goto fail;
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}
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switch (drawable_type)
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{
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case GIMP_RGB_IMAGE:
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if (! print (output, error,
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"#define HEADER_PIXEL(data,pixel) {\\\n"
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"pixel[0] = (((data[0] - 33) << 2) | ((data[1] - 33) >> 4)); \\\n"
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"pixel[1] = ((((data[1] - 33) & 0xF) << 4) | ((data[2] - 33) >> 2)); \\\n"
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"pixel[2] = ((((data[2] - 33) & 0x3) << 6) | ((data[3] - 33))); \\\n"
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"data += 4; \\\n}\n") ||
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! print (output, error,
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"static char *header_data =\n\t\""))
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{
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goto fail;
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}
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format = babl_format ("R'G'B' u8");
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data = g_new (guchar, width * babl_format_get_bytes_per_pixel (format));
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c = 0;
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for (y = 0; y < height; y++)
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{
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gegl_buffer_get (buffer, GEGL_RECTANGLE (0, y, width, 1), 1.0,
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format, data,
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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for (x = 0; x < width; x++)
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{
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d = data + x * babl_format_get_bytes_per_pixel (format);
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buf[0] = ((d[0] >> 2) & 0x3F) + 33;
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buf[1] = ((((d[0] & 0x3) << 4) | (d[1] >> 4)) & 0x3F) + 33;
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buf[2] = ((((d[1] & 0xF) << 2) | (d[2] >> 6)) & 0x3F) + 33;
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buf[3] = (d[2] & 0x3F) + 33;
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for (b = 0; b < 4; b++)
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{
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if (buf[b] == '"')
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{
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if (! print (output, error, "%s", quote))
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goto fail;
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}
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else if (buf[b] == '\\')
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{
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if (! print (output, error, "%s", backslash))
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goto fail;
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}
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else
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{
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if (! print (output, error, "%c", buf[b]))
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goto fail;
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}
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}
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c++;
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if (c >= 16)
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{
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if (! print (output, error, "%s", newline))
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goto fail;
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c = 0;
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}
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}
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}
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if (! print (output, error, "\";\n"))
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goto fail;
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break;
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case GIMP_INDEXED_IMAGE:
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if (! print (output, error,
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"#define HEADER_PIXEL(data,pixel) {\\\n"
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"pixel[0] = header_data_cmap[(unsigned char)data[0]][0]; \\\n"
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"pixel[1] = header_data_cmap[(unsigned char)data[0]][1]; \\\n"
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"pixel[2] = header_data_cmap[(unsigned char)data[0]][2]; \\\n"
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"data ++; }\n\n"))
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{
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goto fail;
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}
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/* save colormap */
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cmap = gimp_image_get_colormap (image_ID, &colors);
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if (! print (output, error,
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"static char header_data_cmap[256][3] = {") ||
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! print (output, error,
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"\n\t{%3d,%3d,%3d}",
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(gint) cmap[0], (gint) cmap[1], (gint) cmap[2]))
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{
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goto fail;
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}
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for (c = 1; c < colors; c++)
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{
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if (! print (output, error,
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",\n\t{%3d,%3d,%3d}",
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(gint) cmap[3 * c],
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(gint) cmap[3 * c + 1],
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(gint) cmap[3 * c + 2]))
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{
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goto fail;
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}
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}
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/* fill the rest */
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for ( ; c < 256; c++)
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{
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if (! print (output, error, ",\n\t{255,255,255}"))
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goto fail;
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}
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/* close bracket */
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if (! print (output, error, "\n\t};\n"))
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goto fail;
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g_free (cmap);
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/* save image */
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if (! print (output, error, "static char header_data[] = {\n\t"))
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goto fail;
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data = g_new (guchar, width * 1);
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c = 0;
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for (y = 0; y < height; y++)
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{
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gegl_buffer_get (buffer, GEGL_RECTANGLE (0, y, width, 1), 1.0,
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NULL, data,
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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for (x = 0; x < width -1; x++)
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{
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d = data + x * 1;
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if (! print (output, error, "%d,", (gint) d[0]))
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goto fail;
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c++;
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if (c >= 16)
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{
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if (! print (output, error, "\n\t"))
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goto fail;
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c = 0;
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}
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}
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if (y != height - 1)
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{
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if (! print (output, error, "%d,\n\t", (gint) d[1]))
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goto fail;
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}
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else
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{
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if (! print (output, error, "%d\n\t", (gint) d[1]))
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goto fail;
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}
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c = 0; /* reset line counter */
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}
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if (! print (output, error, "};\n"))
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goto fail;
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break;
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default:
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g_warning ("unhandled drawable type (%d)", drawable_type);
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goto fail;
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}
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if (! g_output_stream_close (output, NULL, error))
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goto fail;
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g_free (data);
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g_object_unref (output);
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g_object_unref (buffer);
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return TRUE;
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fail:
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g_free (data);
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g_object_unref (output);
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g_object_unref (buffer);
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return FALSE;
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}
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static gboolean
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print (GOutputStream *output,
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GError **error,
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const gchar *format,
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...)
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{
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va_list args;
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gboolean success;
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va_start (args, format);
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success = g_output_stream_vprintf (output, NULL, NULL,
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error, format, args);
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va_end (args);
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return success;
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}
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