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Diffstat (limited to 'app/operations/gimpoperationhistogramsink.c')
| -rw-r--r-- | app/operations/gimpoperationhistogramsink.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/app/operations/gimpoperationhistogramsink.c b/app/operations/gimpoperationhistogramsink.c new file mode 100644 index 0000000..cb0a7ac --- /dev/null +++ b/app/operations/gimpoperationhistogramsink.c @@ -0,0 +1,244 @@ +/* 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; +} |