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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpoperationhistogramsink.c
* Copyright (C) 2012 Øyvind Kolås
*
* 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include "operations-types.h"
#include "core/gimphistogram.h"
#include "gimpoperationhistogramsink.h"
enum
{
PROP_0,
PROP_AUX,
PROP_HISTOGRAM
};
static void gimp_operation_histogram_sink_finalize (GObject *object);
static void gimp_operation_histogram_sink_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gimp_operation_histogram_sink_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_operation_histogram_sink_attach (GeglOperation *operation);
static void gimp_operation_histogram_sink_prepare (GeglOperation *operation);
static GeglRectangle
gimp_operation_histogram_sink_get_required_for_output (GeglOperation *self,
const gchar *input_pad,
const GeglRectangle *roi);
static gboolean gimp_operation_histogram_sink_process (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_prop,
const GeglRectangle *result,
gint level);
G_DEFINE_TYPE (GimpOperationHistogramSink, gimp_operation_histogram_sink,
GEGL_TYPE_OPERATION_SINK)
#define parent_class gimp_operation_histogram_sink_parent_class
static void
gimp_operation_histogram_sink_class_init (GimpOperationHistogramSinkClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
object_class->finalize = gimp_operation_histogram_sink_finalize;
object_class->set_property = gimp_operation_histogram_sink_set_property;
object_class->get_property = gimp_operation_histogram_sink_get_property;
gegl_operation_class_set_keys (operation_class,
"name" , "gimp:histogram-sink",
"categories" , "color",
"description", "GIMP Histogram sink operation",
NULL);
operation_class->attach = gimp_operation_histogram_sink_attach;
operation_class->prepare = gimp_operation_histogram_sink_prepare;
operation_class->get_required_for_output = gimp_operation_histogram_sink_get_required_for_output;
operation_class->process = gimp_operation_histogram_sink_process;
g_object_class_install_property (object_class, PROP_AUX,
g_param_spec_object ("aux",
"Aux",
"Auxiliary image buffer input pad.",
GEGL_TYPE_BUFFER,
G_PARAM_READWRITE |
GEGL_PARAM_PAD_INPUT));
g_object_class_install_property (object_class, PROP_HISTOGRAM,
g_param_spec_object ("histogram",
"Histogram",
"The result histogram",
GIMP_TYPE_HISTOGRAM,
G_PARAM_READWRITE));
}
static void
gimp_operation_histogram_sink_init (GimpOperationHistogramSink *self)
{
}
static void
gimp_operation_histogram_sink_finalize (GObject *object)
{
GimpOperationHistogramSink *sink = GIMP_OPERATION_HISTOGRAM_SINK (object);
g_clear_object (&sink->histogram);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_operation_histogram_sink_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GimpOperationHistogramSink *sink = GIMP_OPERATION_HISTOGRAM_SINK (object);
switch (prop_id)
{
case PROP_AUX:
break;
case PROP_HISTOGRAM:
g_value_set_pointer (value, sink->histogram);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gimp_operation_histogram_sink_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GimpOperationHistogramSink *sink = GIMP_OPERATION_HISTOGRAM_SINK (object);
switch (prop_id)
{
case PROP_AUX:
break;
case PROP_HISTOGRAM:
if (sink->histogram)
g_object_unref (sink->histogram);
sink->histogram = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gimp_operation_histogram_sink_attach (GeglOperation *self)
{
GeglOperation *operation = GEGL_OPERATION (self);
GObjectClass *object_class = G_OBJECT_GET_CLASS (self);
GEGL_OPERATION_CLASS (parent_class)->attach (self);
gegl_operation_create_pad (operation,
g_object_class_find_property (object_class,
"aux"));
}
static void
gimp_operation_histogram_sink_prepare (GeglOperation *operation)
{
/* XXX gegl_operation_set_format (operation, "input", babl_format ("Y u8")); */
gegl_operation_set_format (operation, "aux", babl_format ("Y float"));
}
static GeglRectangle
gimp_operation_histogram_sink_get_required_for_output (GeglOperation *self,
const gchar *input_pad,
const GeglRectangle *roi)
{
/* dunno what to do here, make a wild guess */
return *roi;
}
static gboolean
gimp_operation_histogram_sink_process (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_prop,
const GeglRectangle *result,
gint level)
{
GeglBuffer *input;
GeglBuffer *aux;
if (strcmp (output_prop, "output"))
{
g_warning ("requested processing of %s pad on a sink", output_prop);
return FALSE;
}
input = (GeglBuffer*) gegl_operation_context_dup_object (context, "input");
aux = (GeglBuffer*) gegl_operation_context_dup_object (context, "aux");
if (! input)
{
g_warning ("received NULL input");
return FALSE;
}
if (aux)
{
/* do hist with mask */
g_printerr ("aux format: %s\n",
babl_get_name (gegl_buffer_get_format (aux)));
g_object_unref (aux);
}
else
{
/* without */
}
g_printerr ("input format: %s\n",
babl_get_name (gegl_buffer_get_format (input)));
g_object_unref (input);
return TRUE;
}
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