[gimp/goat-invasion] app: add GimpOperationEqualize and port equalize to it
- From: Michael Natterer <mitch src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gimp/goat-invasion] app: add GimpOperationEqualize and port equalize to it
- Date: Sun, 25 Mar 2012 00:03:18 +0000 (UTC)
commit de4e4dca8231fb9b05f5185ab2a13b3aca6d1e86
Author: Michael Natterer <mitch gimp org>
Date: Sun Mar 25 00:12:15 2012 +0100
app: add GimpOperationEqualize and port equalize to it
app/base/Makefile.am | 2 -
app/base/lut-funcs.c | 101 -----------------
app/base/lut-funcs.h | 26 -----
app/core/gimpdrawable-equalize.c | 22 +++--
app/gegl/Makefile.am | 2 +
app/gegl/gimp-gegl-types.h | 1 +
app/gegl/gimp-gegl.c | 2 +
app/gegl/gimpoperationequalize.c | 223 ++++++++++++++++++++++++++++++++++++++
app/gegl/gimpoperationequalize.h | 55 ++++++++++
9 files changed, 296 insertions(+), 138 deletions(-)
---
diff --git a/app/base/Makefile.am b/app/base/Makefile.am
index ace8146..59d31f6 100644
--- a/app/base/Makefile.am
+++ b/app/base/Makefile.am
@@ -30,8 +30,6 @@ libappbase_a_SOURCES = \
gimplut.h \
hue-saturation.c \
hue-saturation.h \
- lut-funcs.c \
- lut-funcs.h \
pixel-processor.c \
pixel-processor.h \
pixel-region.c \
diff --git a/app/core/gimpdrawable-equalize.c b/app/core/gimpdrawable-equalize.c
index 5c473de..b2c05ea 100644
--- a/app/core/gimpdrawable-equalize.c
+++ b/app/core/gimpdrawable-equalize.c
@@ -21,13 +21,10 @@
#include "core-types.h"
-#include "base/gimplut.h"
-#include "base/lut-funcs.h"
-
#include "gimpdrawable.h"
#include "gimpdrawable-equalize.h"
#include "gimpdrawable-histogram.h"
-#include "gimpdrawable-process.h"
+#include "gimpdrawable-operation.h"
#include "gimphistogram.h"
#include "gimp-intl.h"
@@ -38,7 +35,7 @@ gimp_drawable_equalize (GimpDrawable *drawable,
gboolean mask_only)
{
GimpHistogram *hist;
- GimpLut *lut;
+ GeglNode *equalize;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
@@ -46,9 +43,16 @@ gimp_drawable_equalize (GimpDrawable *drawable,
hist = gimp_histogram_new ();
gimp_drawable_calculate_histogram (drawable, hist);
- lut = equalize_lut_new (hist, gimp_drawable_bytes (drawable));
- gimp_histogram_unref (hist);
+ equalize = gegl_node_new_child (NULL,
+ "operation", "gimp:equalize",
+ "histogram", hist,
+ NULL);
+
+ gimp_drawable_apply_operation (drawable, NULL,
+ C_("undo-type", "Equalize"),
+ equalize, TRUE);
- gimp_drawable_process_lut (drawable, NULL, C_("undo-type", "Equalize"), lut);
- gimp_lut_free (lut);
+ g_object_unref (equalize);
+
+ gimp_histogram_unref (hist);
}
diff --git a/app/gegl/Makefile.am b/app/gegl/Makefile.am
index f26b8ca..afe483c 100644
--- a/app/gegl/Makefile.am
+++ b/app/gegl/Makefile.am
@@ -67,6 +67,8 @@ libappgegl_a_sources = \
gimpoperationcurves.h \
gimpoperationdesaturate.c \
gimpoperationdesaturate.h \
+ gimpoperationequalize.c \
+ gimpoperationequalize.h \
gimpoperationhuesaturation.c \
gimpoperationhuesaturation.h \
gimpoperationlevels.c \
diff --git a/app/gegl/gimp-gegl-types.h b/app/gegl/gimp-gegl-types.h
index a2e9100..99eda62 100644
--- a/app/gegl/gimp-gegl-types.h
+++ b/app/gegl/gimp-gegl-types.h
@@ -40,6 +40,7 @@ typedef struct _GimpOperationColorBalance GimpOperationColorBalance;
typedef struct _GimpOperationColorize GimpOperationColorize;
typedef struct _GimpOperationCurves GimpOperationCurves;
typedef struct _GimpOperationDesaturate GimpOperationDesaturate;
+typedef struct _GimpOperationEqualize GimpOperationEqualize;
typedef struct _GimpOperationHueSaturation GimpOperationHueSaturation;
typedef struct _GimpOperationLevels GimpOperationLevels;
typedef struct _GimpOperationPosterize GimpOperationPosterize;
diff --git a/app/gegl/gimp-gegl.c b/app/gegl/gimp-gegl.c
index a938198..61a6c94 100644
--- a/app/gegl/gimp-gegl.c
+++ b/app/gegl/gimp-gegl.c
@@ -41,6 +41,7 @@
#include "gimpoperationcolorize.h"
#include "gimpoperationcurves.h"
#include "gimpoperationdesaturate.h"
+#include "gimpoperationequalize.h"
#include "gimpoperationhuesaturation.h"
#include "gimpoperationlevels.h"
#include "gimpoperationposterize.h"
@@ -127,6 +128,7 @@ gimp_gegl_init (Gimp *gimp)
g_type_class_ref (GIMP_TYPE_OPERATION_COLORIZE);
g_type_class_ref (GIMP_TYPE_OPERATION_CURVES);
g_type_class_ref (GIMP_TYPE_OPERATION_DESATURATE);
+ g_type_class_ref (GIMP_TYPE_OPERATION_EQUALIZE);
g_type_class_ref (GIMP_TYPE_OPERATION_HUE_SATURATION);
g_type_class_ref (GIMP_TYPE_OPERATION_LEVELS);
g_type_class_ref (GIMP_TYPE_OPERATION_POSTERIZE);
diff --git a/app/gegl/gimpoperationequalize.c b/app/gegl/gimpoperationequalize.c
new file mode 100644
index 0000000..fc78cad
--- /dev/null
+++ b/app/gegl/gimpoperationequalize.c
@@ -0,0 +1,223 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationequalize.c
+ * Copyright (C) 2007 Michael Natterer <mitch gimp org>
+ *
+ * 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 <cairo.h>
+#include <gegl.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "gimp-gegl-types.h"
+
+#include "core/gimphistogram.h"
+
+#include "gimpoperationequalize.h"
+
+
+enum
+{
+ PROP_0,
+ PROP_HISTOGRAM
+};
+
+
+static void gimp_operation_equalize_finalize (GObject *object);
+static void gimp_operation_equalize_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gimp_operation_equalize_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+
+static gboolean gimp_operation_equalize_process (GeglOperation *operation,
+ void *in_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi);
+
+
+G_DEFINE_TYPE (GimpOperationEqualize, gimp_operation_equalize,
+ GIMP_TYPE_OPERATION_POINT_FILTER)
+
+#define parent_class gimp_operation_equalize_parent_class
+
+
+static void
+gimp_operation_equalize_class_init (GimpOperationEqualizeClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
+ GeglOperationPointFilterClass *point_class = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
+
+ object_class->finalize = gimp_operation_equalize_finalize;
+ object_class->set_property = gimp_operation_equalize_set_property;
+ object_class->get_property = gimp_operation_equalize_get_property;
+
+ operation_class->name = "gimp:equalize";
+ operation_class->categories = "color";
+ operation_class->description = "GIMP Equalize operation";
+
+ point_class->process = gimp_operation_equalize_process;
+
+ g_object_class_install_property (object_class, PROP_HISTOGRAM,
+ g_param_spec_pointer ("histogram",
+ "Histogram",
+ "The histogram",
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY));
+}
+
+static void
+gimp_operation_equalize_init (GimpOperationEqualize *self)
+{
+}
+
+static void
+gimp_operation_equalize_finalize (GObject *object)
+{
+ GimpOperationEqualize *self = GIMP_OPERATION_EQUALIZE (object);
+
+ if (self->histogram)
+ {
+ gimp_histogram_unref (self->histogram);
+ self->histogram = NULL;
+ }
+}
+
+static void
+gimp_operation_equalize_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpOperationEqualize *self = GIMP_OPERATION_EQUALIZE (object);
+
+ switch (property_id)
+ {
+ case PROP_HISTOGRAM:
+ g_value_set_pointer (value, self->histogram);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_operation_equalize_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpOperationEqualize *self = GIMP_OPERATION_EQUALIZE (object);
+
+ switch (property_id)
+ {
+ case PROP_HISTOGRAM:
+ if (self->histogram)
+ gimp_histogram_unref (self->histogram);
+ self->histogram = g_value_get_pointer (value);
+ if (self->histogram)
+ {
+ gdouble pixels;
+ gint max;
+ gint k;
+
+ gimp_histogram_ref (self->histogram);
+
+ pixels = gimp_histogram_get_count (self->histogram,
+ GIMP_HISTOGRAM_VALUE, 0, 255);
+
+ if (gimp_histogram_n_channels (self->histogram) == 1 ||
+ gimp_histogram_n_channels (self->histogram) == 2)
+ max = 1;
+ else
+ max = 3;
+
+ for (k = 0; k < 3; k++)
+ {
+ gdouble sum = 0;
+ gint i;
+
+ for (i = 0; i < 256; i++)
+ {
+ gdouble histi;
+
+ histi = gimp_histogram_get_channel (self->histogram, k, i);
+
+ sum += histi;
+
+ self->part[k][i] = sum / pixels;
+
+ if (max == 1)
+ {
+ self->part[1][i] = self->part[0][i];
+ self->part[2][i] = self->part[0][i];
+ }
+ }
+ }
+ }
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static inline float
+gimp_operation_equalize_map (GimpOperationEqualize *self,
+ gint component,
+ gfloat value)
+{
+ gint index = (gint) CLAMP (value * 255.0, 0, 255);
+
+ return self->part[component][index];
+}
+
+static gboolean
+gimp_operation_equalize_process (GeglOperation *operation,
+ void *in_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi)
+{
+ GimpOperationEqualize *self = GIMP_OPERATION_EQUALIZE (operation);
+ gfloat *src = in_buf;
+ gfloat *dest = out_buf;
+
+ while (samples--)
+ {
+ dest[RED] = gimp_operation_equalize_map (self, RED, src[RED]);
+ dest[GREEN] = gimp_operation_equalize_map (self, GREEN, src[GREEN]);
+ dest[BLUE] = gimp_operation_equalize_map (self, BLUE, src[BLUE]);
+ dest[ALPHA] = src[ALPHA];
+
+ src += 4;
+ dest += 4;
+ }
+
+ return TRUE;
+}
diff --git a/app/gegl/gimpoperationequalize.h b/app/gegl/gimpoperationequalize.h
new file mode 100644
index 0000000..38d120b
--- /dev/null
+++ b/app/gegl/gimpoperationequalize.h
@@ -0,0 +1,55 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationequalize.h
+ * Copyright (C) 2012 Michael Natterer <mitch gimp org>
+ *
+ * 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/>.
+ */
+
+#ifndef __GIMP_OPERATION_EQUALIZE_H__
+#define __GIMP_OPERATION_EQUALIZE_H__
+
+
+#include "gimpoperationpointfilter.h"
+
+
+#define GIMP_TYPE_OPERATION_EQUALIZE (gimp_operation_equalize_get_type ())
+#define GIMP_OPERATION_EQUALIZE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_OPERATION_EQUALIZE, GimpOperationEqualize))
+#define GIMP_OPERATION_EQUALIZE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_OPERATION_EQUALIZE, GimpOperationEqualizeClass))
+#define GIMP_IS_OPERATION_EQUALIZE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_OPERATION_EQUALIZE))
+#define GIMP_IS_OPERATION_EQUALIZE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_OPERATION_EQUALIZE))
+#define GIMP_OPERATION_EQUALIZE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_OPERATION_EQUALIZE, GimpOperationEqualizeClass))
+
+
+typedef struct _GimpOperationEqualizeClass GimpOperationEqualizeClass;
+
+struct _GimpOperationEqualize
+{
+ GimpOperationPointFilter parent_instance;
+
+ GimpHistogram *histogram;
+ gfloat part[5][256];
+};
+
+struct _GimpOperationEqualizeClass
+{
+ GimpOperationPointFilterClass parent_class;
+};
+
+
+GType gimp_operation_equalize_get_type (void) G_GNUC_CONST;
+
+
+#endif /* __GIMP_OPERATION_EQUALIZE_H__ */
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