249 lines
8.8 KiB
C
249 lines
8.8 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikaoperationhistogramsink.c
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* Copyright (C) 2012 Øyvind Kolås
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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 <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include "operations-types.h"
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#include "core/pikahistogram.h"
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#include "pikaoperationhistogramsink.h"
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enum
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{
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PROP_0,
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PROP_AUX,
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PROP_HISTOGRAM
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};
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static void pika_operation_histogram_sink_finalize (GObject *object);
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static void pika_operation_histogram_sink_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void pika_operation_histogram_sink_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_operation_histogram_sink_attach (GeglOperation *operation);
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static void pika_operation_histogram_sink_prepare (GeglOperation *operation);
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static GeglRectangle
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pika_operation_histogram_sink_get_required_for_output (GeglOperation *self,
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const gchar *input_pad,
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const GeglRectangle *roi);
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static gboolean pika_operation_histogram_sink_process (GeglOperation *operation,
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GeglOperationContext *context,
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const gchar *output_prop,
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const GeglRectangle *result,
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gint level);
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G_DEFINE_TYPE (PikaOperationHistogramSink, pika_operation_histogram_sink,
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GEGL_TYPE_OPERATION_SINK)
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#define parent_class pika_operation_histogram_sink_parent_class
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static void
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pika_operation_histogram_sink_class_init (PikaOperationHistogramSinkClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
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object_class->finalize = pika_operation_histogram_sink_finalize;
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object_class->set_property = pika_operation_histogram_sink_set_property;
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object_class->get_property = pika_operation_histogram_sink_get_property;
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gegl_operation_class_set_keys (operation_class,
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"name" , "pika:histogram-sink",
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"categories" , "color",
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"description", "PIKA Histogram sink operation",
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NULL);
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operation_class->attach = pika_operation_histogram_sink_attach;
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operation_class->prepare = pika_operation_histogram_sink_prepare;
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operation_class->get_required_for_output = pika_operation_histogram_sink_get_required_for_output;
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operation_class->process = pika_operation_histogram_sink_process;
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g_object_class_install_property (object_class, PROP_AUX,
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g_param_spec_object ("aux",
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"Aux",
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"Auxiliary image buffer input pad.",
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GEGL_TYPE_BUFFER,
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G_PARAM_READWRITE |
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GEGL_PARAM_PAD_INPUT));
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g_object_class_install_property (object_class, PROP_HISTOGRAM,
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g_param_spec_object ("histogram",
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"Histogram",
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"The result histogram",
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PIKA_TYPE_HISTOGRAM,
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G_PARAM_READWRITE));
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}
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static void
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pika_operation_histogram_sink_init (PikaOperationHistogramSink *self)
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{
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}
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static void
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pika_operation_histogram_sink_finalize (GObject *object)
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{
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PikaOperationHistogramSink *sink = PIKA_OPERATION_HISTOGRAM_SINK (object);
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g_clear_object (&sink->histogram);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_operation_histogram_sink_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaOperationHistogramSink *sink = PIKA_OPERATION_HISTOGRAM_SINK (object);
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switch (prop_id)
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{
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case PROP_AUX:
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break;
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case PROP_HISTOGRAM:
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g_value_set_pointer (value, sink->histogram);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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pika_operation_histogram_sink_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaOperationHistogramSink *sink = PIKA_OPERATION_HISTOGRAM_SINK (object);
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switch (prop_id)
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{
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case PROP_AUX:
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break;
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case PROP_HISTOGRAM:
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if (sink->histogram)
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g_object_unref (sink->histogram);
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sink->histogram = g_value_dup_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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pika_operation_histogram_sink_attach (GeglOperation *self)
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{
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GeglOperation *operation = GEGL_OPERATION (self);
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GObjectClass *object_class = G_OBJECT_GET_CLASS (self);
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GEGL_OPERATION_CLASS (parent_class)->attach (self);
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gegl_operation_create_pad (operation,
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g_object_class_find_property (object_class,
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"aux"));
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}
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static void
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pika_operation_histogram_sink_prepare (GeglOperation *operation)
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{
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/* XXX gegl_operation_set_format (operation, "input", babl_format ("Y u8")); */
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gegl_operation_set_format (operation, "aux", babl_format ("Y float"));
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}
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static GeglRectangle
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pika_operation_histogram_sink_get_required_for_output (GeglOperation *self,
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const gchar *input_pad,
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const GeglRectangle *roi)
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{
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/* dunno what to do here, make a wild guess */
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return *roi;
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}
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static gboolean
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pika_operation_histogram_sink_process (GeglOperation *operation,
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GeglOperationContext *context,
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const gchar *output_prop,
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const GeglRectangle *result,
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gint level)
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{
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GeglBuffer *input;
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GeglBuffer *aux;
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if (strcmp (output_prop, "output"))
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{
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g_warning ("requested processing of %s pad on a sink", output_prop);
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return FALSE;
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}
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input = (GeglBuffer*) gegl_operation_context_dup_object (context, "input");
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aux = (GeglBuffer*) gegl_operation_context_dup_object (context, "aux");
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if (! input)
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{
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g_warning ("received NULL input");
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return FALSE;
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}
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if (aux)
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{
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/* do hist with mask */
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g_printerr ("aux format: %s\n",
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babl_get_name (gegl_buffer_get_format (aux)));
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g_object_unref (aux);
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}
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else
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{
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/* without */
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}
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g_printerr ("input format: %s\n",
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babl_get_name (gegl_buffer_get_format (input)));
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g_object_unref (input);
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return TRUE;
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}
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