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-rw-r--r--plug-ins/common/depth-merge.c1050
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diff --git a/plug-ins/common/depth-merge.c b/plug-ins/common/depth-merge.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * Depth Merge -- Combine two image layers via corresponding depth maps
+ * Copyright (C) 1997, 1998 Sean Cier (scier@PostHorizon.com)
+ *
+ * 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.
+ */
+
+/* Version 1.0.0: (14 August 1998)
+ * Math optimizations, miscellaneous speedups
+ *
+ * Version 0.1: (6 July 1997)
+ * Initial Release
+ */
+
+#include "config.h"
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+
+#define DEBUG
+
+#ifndef LERP
+#define LERP(frac,a,b) ((frac)*(b) + (1-(frac))*(a))
+#endif
+
+#define MUL255(i) ((i)*256 - (i))
+#define DIV255(i) (((i) + (i)/256 + 1) / 256)
+
+#define PLUG_IN_PROC "plug-in-depth-merge"
+#define PLUG_IN_VERSION "August 1998"
+#define PLUG_IN_BINARY "depth-merge"
+#define PLUG_IN_ROLE "gimp-depth-merge"
+
+#define PREVIEW_SIZE 256
+
+/* ----- DepthMerge ----- */
+
+struct _DepthMerge;
+
+typedef struct _DepthMergeInterface
+{
+ gboolean active;
+
+ GtkWidget *dialog;
+
+ GtkWidget *preview;
+ gint previewWidth;
+ gint previewHeight;
+
+ guchar *previewSource1;
+ guchar *previewSource2;
+ guchar *previewDepthMap1;
+ guchar *previewDepthMap2;
+} DepthMergeInterface;
+
+typedef struct _DepthMergeParams
+{
+ gint32 result;
+ gint32 source1;
+ gint32 source2;
+ gint32 depthMap1;
+ gint32 depthMap2;
+ gfloat overlap;
+ gfloat offset;
+ gfloat scale1;
+ gfloat scale2;
+} DepthMergeParams;
+
+typedef struct _DepthMerge
+{
+ DepthMergeInterface *interface;
+ DepthMergeParams params;
+
+ gint32 resultDrawable_id;
+ gint32 source1Drawable_id;
+ gint32 source2Drawable_id;
+ gint32 depthMap1Drawable_id;
+ gint32 depthMap2Drawable_id;
+ gint selectionX;
+ gint selectionY;
+ gint selectionWidth;
+ gint selectionHeight;
+ gint resultHasAlpha;
+} DepthMerge;
+
+static void DepthMerge_initParams (DepthMerge *dm);
+static gboolean DepthMerge_construct (DepthMerge *dm);
+static void DepthMerge_destroy (DepthMerge *dm);
+static gint32 DepthMerge_execute (DepthMerge *dm);
+static void DepthMerge_executeRegion (DepthMerge *dm,
+ guchar *source1Row,
+ guchar *source2Row,
+ guchar *depthMap1Row,
+ guchar *depthMap2Row,
+ guchar *resultRow,
+ gint length);
+static gboolean DepthMerge_dialog (DepthMerge *dm);
+static void DepthMerge_buildPreviewSourceImage (DepthMerge *dm);
+static void DepthMerge_updatePreview (DepthMerge *dm);
+
+
+static gboolean dm_constraint (gint32 imageId,
+ gint32 drawableId,
+ gpointer data);
+
+static void dialogSource1ChangedCallback (GtkWidget *widget, DepthMerge *dm);
+static void dialogSource2ChangedCallback (GtkWidget *widget, DepthMerge *dm);
+static void dialogDepthMap1ChangedCallback (GtkWidget *widget, DepthMerge *dm);
+static void dialogDepthMap2ChangedCallback (GtkWidget *widget, DepthMerge *dm);
+
+static void dialogValueScaleUpdateCallback (GtkAdjustment *adjustment,
+ gpointer data);
+
+static void util_fillReducedBuffer (guchar *dest,
+ const Babl *dest_format,
+ gint destWidth,
+ gint destHeight,
+ gint32 sourceDrawable_id,
+ gint x0,
+ gint y0,
+ gint sourceWidth,
+ gint sourceHeight);
+
+
+/* ----- plug-in entry points ----- */
+
+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 args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+ { GIMP_PDB_IMAGE, "image", "Input image (unused)" },
+ { GIMP_PDB_DRAWABLE, "result", "Result" },
+ { GIMP_PDB_DRAWABLE, "source1", "Source 1" },
+ { GIMP_PDB_DRAWABLE, "source2", "Source 2" },
+ { GIMP_PDB_DRAWABLE, "depthMap1", "Depth map 1" },
+ { GIMP_PDB_DRAWABLE, "depthMap2", "Depth map 2" },
+ { GIMP_PDB_FLOAT, "overlap", "Overlap" },
+ { GIMP_PDB_FLOAT, "offset", "Depth relative offset" },
+ { GIMP_PDB_FLOAT, "scale1", "Depth relative scale 1" },
+ { GIMP_PDB_FLOAT, "scale2", "Depth relative scale 2" }
+ };
+
+ gimp_install_procedure (PLUG_IN_PROC,
+ N_("Combine two images using depth maps (z-buffers)"),
+ "Taking as input two full-color, full-alpha "
+ "images and two corresponding grayscale depth "
+ "maps, this plug-in combines the images based "
+ "on which is closer (has a lower depth map value) "
+ "at each point.",
+ "Sean Cier",
+ "Sean Cier",
+ PLUG_IN_VERSION,
+ N_("_Depth Merge..."),
+ "RGB*, GRAY*",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (args), 0,
+ args, NULL);
+
+ gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Combine");
+}
+
+static void
+run (const gchar *name,
+ gint numParams,
+ const GimpParam *param,
+ gint *numReturnVals,
+ GimpParam **returnVals)
+{
+ static GimpParam values[1];
+ GimpRunMode runMode;
+ GimpPDBStatusType status = GIMP_PDB_SUCCESS;
+ DepthMerge dm;
+
+ INIT_I18N ();
+ gegl_init (NULL, NULL);
+
+ runMode = param[0].data.d_int32;
+
+ *numReturnVals = 1;
+ *returnVals = values;
+
+ switch (runMode)
+ {
+ case GIMP_RUN_INTERACTIVE:
+ DepthMerge_initParams (&dm);
+ gimp_get_data (PLUG_IN_PROC, &(dm.params));
+ dm.params.result = param[2].data.d_drawable;
+ if (!DepthMerge_construct (&dm))
+ return;
+
+ if (!DepthMerge_dialog (&dm))
+ {
+ values[0].type = GIMP_PDB_STATUS;
+ values[0].data.d_status = GIMP_PDB_SUCCESS;
+ return;
+ }
+ break;
+
+ case GIMP_RUN_NONINTERACTIVE:
+ DepthMerge_initParams (&dm);
+ if (numParams != 11)
+ status = GIMP_PDB_CALLING_ERROR;
+ else
+ {
+ dm.params.result = param[ 2].data.d_drawable;
+ dm.params.source1 = param[ 3].data.d_drawable;
+ dm.params.source2 = param[ 4].data.d_drawable;
+ dm.params.depthMap1 = param[ 5].data.d_drawable;
+ dm.params.depthMap2 = param[ 6].data.d_drawable;
+ dm.params.overlap = param[ 7].data.d_float;
+ dm.params.offset = param[ 8].data.d_float;
+ dm.params.scale1 = param[ 9].data.d_float;
+ dm.params.scale2 = param[10].data.d_float;
+ }
+ if (!DepthMerge_construct (&dm))
+ return;
+ break;
+
+ case GIMP_RUN_WITH_LAST_VALS:
+ DepthMerge_initParams (&dm);
+ gimp_get_data (PLUG_IN_PROC, &(dm.params));
+ if (!DepthMerge_construct (&dm))
+ return;
+ break;
+
+ default:
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ if (!DepthMerge_execute (&dm))
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ else
+ {
+ if (runMode != GIMP_RUN_NONINTERACTIVE)
+ gimp_displays_flush ();
+
+ if (runMode == GIMP_RUN_INTERACTIVE)
+ gimp_set_data (PLUG_IN_PROC,
+ &(dm.params), sizeof (DepthMergeParams));
+ }
+ }
+
+ DepthMerge_destroy (&dm);
+
+ values[0].data.d_status = status;
+}
+
+/* ----- DepthMerge ----- */
+
+static void
+DepthMerge_initParams (DepthMerge *dm)
+{
+ dm->params.result = -1;
+ dm->params.source1 = -1;
+ dm->params.source2 = -1;
+ dm->params.depthMap1 = -1;
+ dm->params.depthMap2 = -1;
+ dm->params.overlap = 0;
+ dm->params.offset = 0;
+ dm->params.scale1 = 1;
+ dm->params.scale2 = 1;
+}
+
+static gboolean
+DepthMerge_construct (DepthMerge *dm)
+{
+ dm->interface = NULL;
+
+ dm->resultDrawable_id = dm->params.result;
+
+ if (! gimp_drawable_mask_intersect (dm->resultDrawable_id,
+ &(dm->selectionX), &(dm->selectionY),
+ &(dm->selectionWidth),
+ &(dm->selectionHeight)))
+ {
+ return FALSE;
+ }
+
+ dm->resultHasAlpha = gimp_drawable_has_alpha (dm->resultDrawable_id);
+
+ dm->source1Drawable_id = dm->params.source1;
+ dm->source2Drawable_id = dm->params.source2;
+ dm->depthMap1Drawable_id = dm->params.depthMap1;
+ dm->depthMap2Drawable_id = dm->params.depthMap2;
+
+ dm->params.overlap = CLAMP (dm->params.overlap, 0, 2);
+ dm->params.offset = CLAMP (dm->params.offset, -1, 1);
+ dm->params.scale1 = CLAMP (dm->params.scale1, -1, 1);
+ dm->params.scale2 = CLAMP (dm->params.scale2, -1, 1);
+
+ return TRUE;
+}
+
+static void
+DepthMerge_destroy (DepthMerge *dm)
+{
+ if (dm->interface != NULL)
+ {
+ g_free (dm->interface->previewSource1);
+ g_free (dm->interface->previewSource2);
+ g_free (dm->interface->previewDepthMap1);
+ g_free (dm->interface->previewDepthMap2);
+ g_free (dm->interface);
+ }
+}
+
+static gint32
+DepthMerge_execute (DepthMerge *dm)
+{
+ int x, y;
+ GeglBuffer *source1_buffer = NULL;
+ GeglBuffer *source2_buffer = NULL;
+ GeglBuffer *depthMap1_buffer = NULL;
+ GeglBuffer *depthMap2_buffer = NULL;
+ GeglBuffer *result_buffer;
+ guchar *source1Row, *source2Row;
+ guchar *depthMap1Row, *depthMap2Row;
+ guchar *resultRow;
+ guchar *tempRow;
+
+ gimp_progress_init (_("Depth-merging"));
+
+ resultRow = g_new (guchar, dm->selectionWidth * 4);
+ source1Row = g_new (guchar, dm->selectionWidth * 4);
+ source2Row = g_new (guchar, dm->selectionWidth * 4);
+ depthMap1Row = g_new (guchar, dm->selectionWidth );
+ depthMap2Row = g_new (guchar, dm->selectionWidth );
+ tempRow = g_new (guchar, dm->selectionWidth * 4);
+
+ if (dm->source1Drawable_id > 0)
+ {
+ source1_buffer = gimp_drawable_get_buffer (dm->source1Drawable_id);
+ }
+ else
+ {
+ for (x = 0; x < dm->selectionWidth; x++)
+ {
+ source1Row[4 * x ] = 0;
+ source1Row[4 * x + 1] = 0;
+ source1Row[4 * x + 2] = 0;
+ source1Row[4 * x + 3] = 255;
+ }
+ }
+
+ if (dm->source2Drawable_id > 0)
+ {
+ source2_buffer = gimp_drawable_get_buffer (dm->source2Drawable_id);
+ }
+ else
+ {
+ for (x = 0; x < dm->selectionWidth; x++)
+ {
+ source2Row[4 * x ] = 0;
+ source2Row[4 * x + 1] = 0;
+ source2Row[4 * x + 2] = 0;
+ source2Row[4 * x + 3] = 255;
+ }
+ }
+
+ if (dm->depthMap1Drawable_id > 0)
+ {
+ depthMap1_buffer = gimp_drawable_get_buffer (dm->depthMap1Drawable_id);
+ }
+ else
+ {
+ for (x = 0; x < dm->selectionWidth; x++)
+ {
+ depthMap1Row[x] = 0;
+ }
+ }
+
+ if (dm->depthMap2Drawable_id > 0)
+ {
+ depthMap2_buffer = gimp_drawable_get_buffer (dm->depthMap2Drawable_id);
+ }
+ else
+ {
+ for (x = 0; x < dm->selectionWidth; x++)
+ {
+ depthMap2Row[x] = 0;
+ }
+ }
+
+ result_buffer = gimp_drawable_get_shadow_buffer (dm->resultDrawable_id);
+
+ for (y = dm->selectionY; y < (dm->selectionY + dm->selectionHeight); y++)
+ {
+ if (dm->source1Drawable_id > 0)
+ {
+ gegl_buffer_get (source1_buffer,
+ GEGL_RECTANGLE (dm->selectionX, y,
+ dm->selectionWidth, 1), 1.0,
+ babl_format ("R'G'B'A u8"), source1Row,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+ }
+
+ if (dm->source2Drawable_id > 0)
+ {
+ gegl_buffer_get (source2_buffer,
+ GEGL_RECTANGLE (dm->selectionX, y,
+ dm->selectionWidth, 1), 1.0,
+ babl_format ("R'G'B'A u8"), source2Row,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+ }
+
+ if (dm->depthMap1Drawable_id > 0)
+ {
+ gegl_buffer_get (depthMap1_buffer,
+ GEGL_RECTANGLE (dm->selectionX, y,
+ dm->selectionWidth, 1), 1.0,
+ babl_format ("Y' u8"), depthMap1Row,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+ }
+
+ if (dm->depthMap2Drawable_id > 0)
+ {
+ gegl_buffer_get (depthMap2_buffer,
+ GEGL_RECTANGLE (dm->selectionX, y,
+ dm->selectionWidth, 1), 1.0,
+ babl_format ("Y' u8"), depthMap2Row,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+ }
+
+ DepthMerge_executeRegion (dm,
+ source1Row, source2Row, depthMap1Row, depthMap2Row,
+ resultRow,
+ dm->selectionWidth);
+
+ gegl_buffer_set (result_buffer,
+ GEGL_RECTANGLE (dm->selectionX, y,
+ dm->selectionWidth, 1), 0,
+ babl_format ("R'G'B'A u8"), resultRow,
+ GEGL_AUTO_ROWSTRIDE);
+
+ gimp_progress_update ((double)(y-dm->selectionY) /
+ (double)(dm->selectionHeight - 1));
+ }
+
+ g_free (resultRow);
+ g_free (source1Row);
+ g_free (source2Row);
+ g_free (depthMap1Row);
+ g_free (depthMap2Row);
+ g_free (tempRow);
+
+ gimp_progress_update (1.0);
+
+ if (source1_buffer)
+ g_object_unref (source1_buffer);
+
+ if (source2_buffer)
+ g_object_unref (source2_buffer);
+
+ if (depthMap1_buffer)
+ g_object_unref (depthMap1_buffer);
+
+ if (depthMap2_buffer)
+ g_object_unref (depthMap2_buffer);
+
+ g_object_unref (result_buffer);
+
+ gimp_drawable_merge_shadow (dm->resultDrawable_id, TRUE);
+ gimp_drawable_update (dm->resultDrawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ return TRUE;
+}
+
+static void
+DepthMerge_executeRegion (DepthMerge *dm,
+ guchar *source1Row,
+ guchar *source2Row,
+ guchar *depthMap1Row,
+ guchar *depthMap2Row,
+ guchar *resultRow,
+ gint length)
+{
+ gfloat scale1, scale2, offset255, invOverlap255;
+ gfloat frac, depth1, depth2;
+ gushort c1[4], c2[4];
+ gushort cR1[4] = { 0, 0, 0, 0 }, cR2[4] = { 0, 0, 0, 0 };
+ gushort cR[4], temp;
+ gint i, tempInt;
+
+ invOverlap255 = 1.0 / (MAX (dm->params.overlap, 0.001) * 255);
+ offset255 = dm->params.offset * 255;
+ scale1 = dm->params.scale1;
+ scale2 = dm->params.scale2;
+
+ for (i = 0; i < length; i++)
+ {
+ depth1 = (gfloat) depthMap1Row[i];
+ depth2 = (gfloat) depthMap2Row[i];
+
+ frac = (depth2 * scale2 - (depth1 * scale1 + offset255)) * invOverlap255;
+ frac = 0.5 * (frac + 1.0);
+ frac = CLAMP(frac, 0.0, 1.0);
+
+ /* c1 -> color corresponding to source1 */
+ c1[0] = source1Row[4 * i ];
+ c1[1] = source1Row[4 * i + 1];
+ c1[2] = source1Row[4 * i + 2];
+ c1[3] = source1Row[4 * i + 3];
+
+ /* c2 -> color corresponding to source2 */
+ c2[0] = source2Row[4 * i ];
+ c2[1] = source2Row[4 * i + 1];
+ c2[2] = source2Row[4 * i + 2];
+ c2[3] = source2Row[4 * i + 3];
+
+ if (frac != 0)
+ {
+ /* cR1 -> result if c1 is completely on top */
+ cR1[0] = c1[3] * c1[0] + (255 - c1[3]) * c2[0];
+ cR1[1] = c1[3] * c1[1] + (255 - c1[3]) * c2[1];
+ cR1[2] = c1[3] * c1[2] + (255 - c1[3]) * c2[2];
+ cR1[3] = MUL255 (c1[3]) + (255 - c1[3]) * c2[3];
+ }
+
+ if (frac != 1)
+ {
+ /* cR2 -> result if c2 is completely on top */
+ cR2[0] = c2[3] * c2[0] + (255 - c2[3]) * c1[0];
+ cR2[1] = c2[3] * c2[1] + (255 - c2[3]) * c1[1];
+ cR2[2] = c2[3] * c2[2] + (255 - c2[3]) * c1[2];
+ cR2[3] = MUL255 (c2[3]) + (255 - c2[3]) * c1[3];
+ }
+
+ if (frac == 1)
+ {
+ cR[0] = cR1[0];
+ cR[1] = cR1[1];
+ cR[2] = cR1[2];
+ cR[3] = cR1[3];
+ }
+ else if (frac == 0)
+ {
+ cR[0] = cR2[0];
+ cR[1] = cR2[1];
+ cR[2] = cR2[2];
+ cR[3] = cR2[3];
+ }
+ else
+ {
+ tempInt = LERP (frac, cR2[0], cR1[0]);
+ cR[0] = CLAMP (tempInt,0,255 * 255);
+ tempInt = LERP (frac, cR2[1], cR1[1]);
+ cR[1] = CLAMP (tempInt,0,255 * 255);
+ tempInt = LERP (frac, cR2[2], cR1[2]);
+ cR[2] = CLAMP (tempInt,0,255 * 255);
+ tempInt = LERP (frac, cR2[3], cR1[3]);
+ cR[3] = CLAMP (tempInt,0,255 * 255);
+ }
+
+ temp = DIV255 (cR[0]); resultRow[4 * i ] = MIN (temp, 255);
+ temp = DIV255 (cR[1]); resultRow[4 * i + 1] = MIN (temp, 255);
+ temp = DIV255 (cR[2]); resultRow[4 * i + 2] = MIN (temp, 255);
+ temp = DIV255 (cR[3]); resultRow[4 * i + 3] = MIN (temp, 255);
+ }
+}
+
+static gboolean
+DepthMerge_dialog (DepthMerge *dm)
+{
+ GtkWidget *dialog;
+ GtkWidget *vbox;
+ GtkWidget *frame;
+ GtkWidget *table;
+ GtkWidget *hbox;
+ GtkWidget *label;
+ GtkWidget *combo;
+ GtkObject *adj;
+ gboolean run;
+
+ dm->interface = g_new0 (DepthMergeInterface, 1);
+
+ gimp_ui_init (PLUG_IN_BINARY, TRUE);
+
+ dm->interface->dialog =
+ dialog = gimp_dialog_new (_("Depth Merge"), PLUG_IN_ROLE,
+ NULL, 0,
+ gimp_standard_help_func, PLUG_IN_PROC,
+
+ _("_Cancel"), GTK_RESPONSE_CANCEL,
+ _("_OK"), GTK_RESPONSE_OK,
+
+ NULL);
+
+ gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
+ GTK_RESPONSE_OK,
+ GTK_RESPONSE_CANCEL,
+ -1);
+
+ gimp_window_set_transient (GTK_WINDOW (dialog));
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+ gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
+ vbox, FALSE, FALSE, 0);
+ gtk_widget_show (vbox);
+
+ /* Preview */
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+ gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+ gtk_widget_show (hbox);
+
+ frame = gtk_frame_new (NULL);
+ gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+ gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ dm->interface->previewWidth = MIN (dm->selectionWidth, PREVIEW_SIZE);
+ dm->interface->previewHeight = MIN (dm->selectionHeight, PREVIEW_SIZE);
+ dm->interface->preview = gimp_preview_area_new ();
+ gtk_widget_set_size_request (dm->interface->preview,
+ dm->interface->previewWidth,
+ dm->interface->previewHeight);
+ gtk_container_add (GTK_CONTAINER (frame), dm->interface->preview);
+ gtk_widget_show (dm->interface->preview);
+
+ DepthMerge_buildPreviewSourceImage (dm);
+
+ /* Source and Depth Map selection */
+ table = gtk_table_new (8, 3, FALSE);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_row_spacing (GTK_TABLE (table), 1, 12);
+ gtk_table_set_row_spacing (GTK_TABLE (table), 3, 12);
+ gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
+ gtk_widget_show (table);
+
+ label = gtk_label_new (_("Source 1:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
+ GTK_FILL, GTK_FILL, 0, 0);
+ gtk_widget_show (label);
+
+ combo = gimp_drawable_combo_box_new (dm_constraint, dm);
+ gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), dm->params.source1,
+ G_CALLBACK (dialogSource1ChangedCallback),
+ dm);
+
+ gtk_table_attach (GTK_TABLE (table), combo, 1, 3, 0, 1,
+ GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
+ gtk_widget_show (combo);
+
+ label = gtk_label_new(_("Depth map:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
+ GTK_FILL, GTK_FILL, 0, 0);
+ gtk_widget_show (label);
+
+ combo = gimp_drawable_combo_box_new (dm_constraint, dm);
+ gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), dm->params.depthMap1,
+ G_CALLBACK (dialogDepthMap1ChangedCallback),
+ dm);
+
+ gtk_table_attach (GTK_TABLE (table), combo, 1, 3, 1, 2,
+ GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
+ gtk_widget_show (combo);
+
+ label = gtk_label_new (_("Source 2:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, 2, 3,
+ GTK_FILL, GTK_FILL, 0, 0);
+ gtk_widget_show (label);
+
+ combo = gimp_drawable_combo_box_new (dm_constraint, dm);
+ gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), dm->params.source2,
+ G_CALLBACK (dialogSource2ChangedCallback),
+ dm);
+
+ gtk_table_attach (GTK_TABLE (table), combo, 1, 3, 2, 3,
+ GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
+ gtk_widget_show (combo);
+
+ label = gtk_label_new (_("Depth map:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, 3, 4,
+ GTK_FILL, GTK_FILL, 0, 0);
+ gtk_widget_show (label);
+
+ combo = gimp_drawable_combo_box_new (dm_constraint, dm);
+ gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), dm->params.depthMap2,
+ G_CALLBACK (dialogDepthMap2ChangedCallback),
+ dm);
+
+ gtk_table_attach (GTK_TABLE (table), combo, 1, 3, 3, 4,
+ GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
+ gtk_widget_show (combo);
+
+ /* Numeric parameters */
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 4,
+ _("O_verlap:"), 0, 6,
+ dm->params.overlap, 0, 2, 0.001, 0.01, 3,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dialogValueScaleUpdateCallback),
+ &(dm->params.overlap));
+ g_object_set_data (G_OBJECT (adj), "dm", dm);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 5,
+ _("O_ffset:"), 0, 6,
+ dm->params.offset, -1, 1, 0.001, 0.01, 3,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dialogValueScaleUpdateCallback),
+ &(dm->params.offset));
+ g_object_set_data (G_OBJECT (adj), "dm", dm);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 6,
+ _("Sc_ale 1:"), 0, 6,
+ dm->params.scale1, -1, 1, 0.001, 0.01, 3,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dialogValueScaleUpdateCallback),
+ &(dm->params.scale1));
+ g_object_set_data (G_OBJECT (adj), "dm", dm);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 7,
+ _("Sca_le 2:"), 0, 6,
+ dm->params.scale2, -1, 1, 0.001, 0.01, 3,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dialogValueScaleUpdateCallback),
+ &(dm->params.scale2));
+ g_object_set_data (G_OBJECT (adj), "dm", dm);
+
+ dm->interface->active = TRUE;
+
+ gtk_widget_show (dm->interface->dialog);
+ DepthMerge_updatePreview (dm);
+
+ run = (gimp_dialog_run (GIMP_DIALOG (dm->interface->dialog)) == GTK_RESPONSE_OK);
+
+ gtk_widget_destroy (dm->interface->dialog);
+ dm->interface->dialog = NULL;
+
+ return run;
+}
+
+static void
+DepthMerge_buildPreviewSourceImage (DepthMerge *dm)
+{
+ dm->interface->previewSource1 =
+ g_new (guchar, dm->interface->previewWidth *
+ dm->interface->previewHeight * 4);
+ util_fillReducedBuffer (dm->interface->previewSource1,
+ babl_format ("R'G'B'A u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->source1Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ dm->interface->previewSource2 =
+ g_new (guchar, dm->interface->previewWidth *
+ dm->interface->previewHeight * 4);
+ util_fillReducedBuffer (dm->interface->previewSource2,
+ babl_format ("R'G'B'A u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->source2Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ dm->interface->previewDepthMap1 =
+ g_new (guchar, dm->interface->previewWidth *
+ dm->interface->previewHeight * 1);
+ util_fillReducedBuffer (dm->interface->previewDepthMap1,
+ babl_format ("Y' u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->depthMap1Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ dm->interface->previewDepthMap2 =
+ g_new (guchar, dm->interface->previewWidth *
+ dm->interface->previewHeight * 1);
+ util_fillReducedBuffer (dm->interface->previewDepthMap2,
+ babl_format ("Y' u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->depthMap2Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+}
+
+static void
+DepthMerge_updatePreview (DepthMerge *dm)
+{
+ gint y;
+ guchar *source1Row, *source2Row;
+ guchar *depthMap1Row, *depthMap2Row;
+ guchar *resultRGBA;
+
+ if (!dm->interface->active)
+ return;
+
+ resultRGBA = g_new (guchar, 4 * dm->interface->previewWidth *
+ dm->interface->previewHeight);
+
+ for (y = 0; y < dm->interface->previewHeight; y++)
+ {
+ source1Row =
+ &(dm->interface->previewSource1[ y * dm->interface->previewWidth * 4]);
+ source2Row =
+ &(dm->interface->previewSource2[ y * dm->interface->previewWidth * 4]);
+ depthMap1Row =
+ &(dm->interface->previewDepthMap1[y * dm->interface->previewWidth ]);
+ depthMap2Row =
+ &(dm->interface->previewDepthMap2[y * dm->interface->previewWidth ]);
+
+ DepthMerge_executeRegion(dm,
+ source1Row, source2Row, depthMap1Row, depthMap2Row,
+ resultRGBA + 4 * y * dm->interface->previewWidth,
+ dm->interface->previewWidth);
+ }
+
+ gimp_preview_area_draw (GIMP_PREVIEW_AREA (dm->interface->preview),
+ 0, 0,
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ GIMP_RGBA_IMAGE,
+ resultRGBA,
+ dm->interface->previewWidth * 4);
+ g_free(resultRGBA);
+}
+
+/* ----- Callbacks ----- */
+
+static gboolean
+dm_constraint (gint32 imageId,
+ gint32 drawableId,
+ gpointer data)
+{
+ DepthMerge *dm = (DepthMerge *)data;
+
+ return ((drawableId == -1) ||
+ ((gimp_drawable_width (drawableId) ==
+ gimp_drawable_width (dm->params.result)) &&
+ (gimp_drawable_height (drawableId) ==
+ gimp_drawable_height (dm->params.result)) &&
+ ((gimp_drawable_is_rgb (drawableId) &&
+ (gimp_drawable_is_rgb (dm->params.result))) ||
+ gimp_drawable_is_gray (drawableId))));
+}
+
+static void
+dialogSource1ChangedCallback (GtkWidget *widget,
+ DepthMerge *dm)
+{
+ gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
+ &dm->params.source1);
+
+ dm->source1Drawable_id = dm->params.source1;
+
+ util_fillReducedBuffer (dm->interface->previewSource1,
+ babl_format ("R'G'B'A u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->source1Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ DepthMerge_updatePreview (dm);
+}
+
+static void
+dialogSource2ChangedCallback (GtkWidget *widget,
+ DepthMerge *dm)
+{
+ gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
+ &dm->params.source2);
+
+ dm->source2Drawable_id = dm->params.source2;
+
+ util_fillReducedBuffer (dm->interface->previewSource2,
+ babl_format ("R'G'B'A u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->source2Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ DepthMerge_updatePreview (dm);
+}
+
+static void
+dialogDepthMap1ChangedCallback (GtkWidget *widget,
+ DepthMerge *dm)
+{
+ gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
+ &dm->params.depthMap1);
+
+ dm->depthMap1Drawable_id = dm->params.depthMap1;
+
+ util_fillReducedBuffer (dm->interface->previewDepthMap1,
+ babl_format ("Y' u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->depthMap1Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ DepthMerge_updatePreview (dm);
+}
+
+static void
+dialogDepthMap2ChangedCallback (GtkWidget *widget,
+ DepthMerge *dm)
+{
+ gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
+ &dm->params.depthMap2);
+
+ dm->depthMap2Drawable_id = dm->params.depthMap2;;
+
+ util_fillReducedBuffer (dm->interface->previewDepthMap2,
+ babl_format ("Y' u8"),
+ dm->interface->previewWidth,
+ dm->interface->previewHeight,
+ dm->depthMap2Drawable_id,
+ dm->selectionX, dm->selectionY,
+ dm->selectionWidth, dm->selectionHeight);
+
+ DepthMerge_updatePreview (dm);
+}
+
+static void
+dialogValueScaleUpdateCallback (GtkAdjustment *adjustment,
+ gpointer data)
+{
+ DepthMerge *dm = g_object_get_data (G_OBJECT (adjustment), "dm");
+
+ gimp_float_adjustment_update (adjustment, data);
+
+ DepthMerge_updatePreview (dm);
+}
+
+/* ----- Utility routines ----- */
+
+static void
+util_fillReducedBuffer (guchar *dest,
+ const Babl *dest_format,
+ gint destWidth,
+ gint destHeight,
+ gint32 sourceDrawable_id,
+ gint x0,
+ gint y0,
+ gint sourceWidth,
+ gint sourceHeight)
+{
+ GeglBuffer *buffer;
+ guchar *sourceBuffer, *reducedRowBuffer;
+ guchar *sourceBufferPos, *reducedRowBufferPos;
+ guchar *sourceBufferRow;
+ gint x, y, i, yPrime;
+ gint destBPP;
+ gint *sourceRowOffsetLookup;
+
+ destBPP = babl_format_get_bytes_per_pixel (dest_format);
+
+ if ((sourceDrawable_id < 1) || (sourceWidth == 0) || (sourceHeight == 0))
+ {
+ for (x = 0; x < destWidth * destHeight * destBPP; x++)
+ dest[x] = 0;
+
+ return;
+ }
+
+ sourceBuffer = g_new (guchar, sourceWidth * sourceHeight * destBPP);
+ reducedRowBuffer = g_new (guchar, destWidth * destBPP);
+ sourceRowOffsetLookup = g_new (int, destWidth);
+
+ buffer = gimp_drawable_get_buffer (sourceDrawable_id);
+
+ for (x = 0; x < destWidth; x++)
+ sourceRowOffsetLookup[x] = (x * (sourceWidth - 1) / (destWidth - 1)) * destBPP;
+
+ gegl_buffer_get (buffer,
+ GEGL_RECTANGLE (x0, y0, sourceWidth, sourceHeight), 1.0,
+ dest_format, sourceBuffer,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+
+ for (y = 0; y < destHeight; y++)
+ {
+ yPrime = y * (sourceHeight - 1) / (destHeight - 1);
+ sourceBufferRow = &(sourceBuffer[yPrime * sourceWidth * destBPP]);
+ reducedRowBufferPos = reducedRowBuffer;
+
+ for (x = 0; x < destWidth; x++)
+ {
+ sourceBufferPos = sourceBufferRow + sourceRowOffsetLookup[x];
+ for (i = 0; i < destBPP; i++)
+ reducedRowBufferPos[i] = sourceBufferPos[i];
+ reducedRowBufferPos += destBPP;
+ }
+
+ memcpy (&(dest[y * destWidth * destBPP]), reducedRowBuffer,
+ destWidth * destBPP);
+ }
+
+ g_object_unref (buffer);
+
+ g_free (sourceBuffer);
+ g_free (reducedRowBuffer);
+ g_free (sourceRowOffsetLookup);
+}