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- /* Deinterlace 1.00 - image processing plug-in for the Gimp 1.0 API
- *
- * Copyright (C) 1997 Andrew Kieschnick (andrewk@mail.utexas.edu)
- *
- * Original deinterlace for the Gimp 0.54 API by Federico Mena Quintero
- *
- * Copyright (C) 1996 Federico Mena Quintero
- *
- * Any bugs in this code are probably my (Andrew Kieschnick's) fault, as I
- * pretty much rewrote it from scratch.
- *
- * 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 <gtk/gtk.h>
-
- #include <libgimp/gimp.h>
- #include <libgimp/gimpui.h>
-
- #include "libgimp/stdplugins-intl.h"
-
-
- enum
- {
- ODD_FIELDS,
- EVEN_FIELDS
- };
-
- /* Declare local functions.
- */
- static void query (void);
- static void run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals);
-
- static void deinterlace (GimpDrawable *drawable);
-
- static gint deinterlace_dialog (void);
-
- GimpPlugInInfo PLUG_IN_INFO =
- {
- NULL, /* init_proc */
- NULL, /* quit_proc */
- query, /* query_proc */
- run, /* run_proc */
- };
-
- static gint DeinterlaceValue = EVEN_FIELDS;
-
- MAIN ()
-
- static void
- query (void)
- {
- static GimpParamDef args[] =
- {
- { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
- { GIMP_PDB_IMAGE, "image", "Input image (unused)" },
- { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
- { GIMP_PDB_INT32, "evenodd", "0 = keep odd, 1 = keep even" }
- };
- static gint nargs = sizeof (args) / sizeof (args[0]);
-
- gimp_install_procedure ("plug_in_deinterlace",
- "Deinterlace",
- "Deinterlace is useful for processing images from "
- "video capture cards. When only the odd or even "
- "fields get captured, deinterlace can be used to "
- "interpolate between the existing fields to correct "
- "this.",
- "Andrew Kieschnick",
- "Andrew Kieschnick",
- "1997",
- N_("<Image>/Filters/Enhance/Deinterlace..."),
- "RGB*, GRAY*",
- GIMP_PLUGIN,
- nargs, 0,
- args, NULL);
- }
-
- static void
- run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals)
- {
- static GimpParam values[1];
- GimpDrawable *drawable;
- GimpRunModeType run_mode;
- GimpPDBStatusType status = GIMP_PDB_SUCCESS;
-
- run_mode = param[0].data.d_int32;
-
- /* Get the specified drawable */
- drawable = gimp_drawable_get (param[2].data.d_drawable);
-
- switch (run_mode)
- {
- case GIMP_RUN_INTERACTIVE:
- INIT_I18N_UI();
- gimp_get_data ("plug_in_deinterlace", &DeinterlaceValue);
- if (! deinterlace_dialog ())
- status = GIMP_PDB_EXECUTION_ERROR;
- break;
-
- case GIMP_RUN_NONINTERACTIVE:
- INIT_I18N();
- if (nparams != 4)
- status = GIMP_PDB_CALLING_ERROR;
- if (status == GIMP_PDB_SUCCESS)
- DeinterlaceValue = param[3].data.d_int32;
- break;
-
- case GIMP_RUN_WITH_LAST_VALS:
- INIT_I18N();
- gimp_get_data ("plug_in_deinterlace", &DeinterlaceValue);
- break;
-
- default:
- break;
- }
-
- if (status == GIMP_PDB_SUCCESS)
- {
- /* Make sure that the drawable is gray or RGB color */
- if (gimp_drawable_is_rgb (drawable->id) ||
- gimp_drawable_is_gray (drawable->id))
- {
- gimp_progress_init (_("Deinterlace..."));
- gimp_tile_cache_ntiles (2 * (drawable->width /
- gimp_tile_width () + 1));
- deinterlace (drawable);
-
- if (run_mode != GIMP_RUN_NONINTERACTIVE)
- gimp_displays_flush ();
- if (run_mode == GIMP_RUN_INTERACTIVE)
- gimp_set_data ("plug_in_deinterlace",
- &DeinterlaceValue, sizeof (DeinterlaceValue));
- }
- else
- {
- /* gimp_message ("deinterlace: cannot operate on indexed color images"); */
- status = GIMP_PDB_EXECUTION_ERROR;
- }
- }
- *nreturn_vals = 1;
- *return_vals = values;
-
- values[0].type = GIMP_PDB_STATUS;
- values[0].data.d_status = status;
-
- gimp_drawable_detach (drawable);
- }
-
- static void
- deinterlace (GimpDrawable *drawable)
- {
- GimpPixelRgn srcPR, destPR;
- gint width, height;
- gint bytes;
- guchar *dest;
- guchar *upper;
- guchar *lower;
- gint row, col;
- gint x1, y1, x2, y2;
-
- /* Get the input area. This is the bounding box of the selection in
- * the image (or the entire image if there is no selection). Only
- * operating on the input area is simply an optimization. It doesn't
- * need to be done for correct operation. (It simply makes it go
- * faster, since fewer pixels need to be operated on).
- */
-
- gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
-
- /* Get the size of the input image. (This will/must be the same
- * as the size of the output image.
- */
- width = drawable->width;
- height = drawable->height;
- bytes = drawable->bpp;
-
- /* allocate row buffers */
- dest = g_new (guchar, (x2 - x1) * bytes);
- upper = g_new (guchar, (x2 - x1) * bytes);
- lower = g_new (guchar, (x2 - x1) * bytes);
-
- /* initialize the pixel regions */
- gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
- gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
-
- /* loop through the rows, performing our magic*/
- for (row = y1; row < y2; row++)
- {
- gimp_pixel_rgn_get_row (&srcPR, dest, x1, row, (x2-x1));
-
- /* Only do interpolation if the row:
- (1) Isn't one we want to keep
- (2) Has both an upper and a lower row
- Otherwise, just duplicate the source row
- */
- if (!((row % 2 == DeinterlaceValue) ||
- (row - 1 < 0) ||
- (row + 1 >= height)))
- {
- gimp_pixel_rgn_get_row (&srcPR, upper, x1, row-1, (x2-x1));
- gimp_pixel_rgn_get_row (&srcPR, lower, x1, row+1, (x2-x1));
- for (col=0; col < ((x2-x1)*bytes); col++)
- dest[col]=(upper[col]+lower[col])>>1;
- }
- gimp_pixel_rgn_set_row (&destPR, dest, x1, row, (x2-x1));
-
- if ((row % 5) == 0)
- gimp_progress_update ((double) row / (double) (y2 - y1));
- }
-
- /* update the deinterlaced region */
- gimp_drawable_flush (drawable);
- gimp_drawable_merge_shadow (drawable->id, TRUE);
- gimp_drawable_update (drawable->id, x1, y1, (x2 - x1), (y2 - y1));
-
- g_free (lower);
- g_free (upper);
- g_free (dest);
- }
-
- gboolean run_flag = FALSE;
-
- static void
- deinterlace_ok_callback (GtkWidget *widget,
- gpointer data)
- {
- run_flag = TRUE;
-
- gtk_widget_destroy (GTK_WIDGET (data));
- }
-
- static gint
- deinterlace_dialog (void)
- {
- GtkWidget *dlg;
- GtkWidget *vbox;
- GtkWidget *frame;
-
- gimp_ui_init ("deinterlace", FALSE);
-
- dlg = gimp_dialog_new (_("Deinterlace"), "deinterlace",
- gimp_standard_help_func, "filters/deinterlace.html",
- GTK_WIN_POS_MOUSE,
- FALSE, TRUE, FALSE,
-
- _("OK"), deinterlace_ok_callback,
- NULL, NULL, NULL, TRUE, FALSE,
- _("Cancel"), gtk_widget_destroy,
- NULL, 1, NULL, FALSE, TRUE,
-
- NULL);
-
- gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
- GTK_SIGNAL_FUNC (gtk_main_quit),
- NULL);
-
- vbox = gtk_vbox_new (FALSE, 0);
- gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
- gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), vbox, TRUE, TRUE, 0);
- gtk_widget_show (vbox);
-
- frame =
- gimp_radio_group_new2 (TRUE, _("Mode"),
- gimp_radio_button_update,
- &DeinterlaceValue, (gpointer) DeinterlaceValue,
-
- _("Keep Odd Fields"), (gpointer) ODD_FIELDS, NULL,
- _("Keep Even Fields"), (gpointer) EVEN_FIELDS, NULL,
-
- NULL);
- gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
- gtk_widget_show (frame);
-
- gtk_widget_show (dlg);
-
- gtk_main ();
- gdk_flush ();
-
- return run_flag;
- }
-