gimp/app/gegl/gimpoperationtilesource.c

241 lines
8.3 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpoperationtilesource.c
* Copyright (C) 2007 Øyvind Kolås <pippin@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 <string.h>
#include <gegl.h>
#include <gegl-buffer.h>
#include "gimp-gegl-types.h"
#include "base/tile-manager.h"
#include "base/pixel-region.h"
#include "gimp-gegl-utils.h"
#include "gimpoperationtilesource.h"
enum
{
PROP_0,
PROP_TILE_MANAGER,
PROP_LINEAR
};
static void gimp_operation_tile_source_finalize (GObject *object);
static void gimp_operation_tile_source_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_operation_tile_source_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_operation_tile_source_prepare (GeglOperation *operation);
static GeglRectangle
gimp_operation_tile_source_get_bounding_box (GeglOperation *operation);
static gboolean gimp_operation_tile_source_process (GeglOperation *operation,
GeglBuffer *output,
const GeglRectangle *result);
G_DEFINE_TYPE (GimpOperationTileSource, gimp_operation_tile_source,
GEGL_TYPE_OPERATION_SOURCE)
#define parent_class gimp_operation_tile_source_parent_class
static void
gimp_operation_tile_source_class_init (GimpOperationTileSourceClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
GeglOperationSourceClass *source_class = GEGL_OPERATION_SOURCE_CLASS (klass);
object_class->finalize = gimp_operation_tile_source_finalize;
object_class->set_property = gimp_operation_tile_source_set_property;
object_class->get_property = gimp_operation_tile_source_get_property;
operation_class->name = "gimp:tilemanager-source";
operation_class->categories = "input";
operation_class->description = "GIMP TileManager source";
operation_class->prepare = gimp_operation_tile_source_prepare;
operation_class->get_bounding_box = gimp_operation_tile_source_get_bounding_box;
operation_class->get_cached_region = NULL; /* the default source is
expanding to agressivly
make use of available caching,
this behavior is at least a
little unexpected. */
source_class->process = gimp_operation_tile_source_process;
g_object_class_install_property (object_class, PROP_TILE_MANAGER,
g_param_spec_boxed ("tile-manager",
"Tile Manager",
"The tile manager to use as source",
GIMP_TYPE_TILE_MANAGER,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_LINEAR,
g_param_spec_boolean ("linear",
"Linear data",
"Should the data read from the tile-manager assumed to be linear or gamma-corrected?",
FALSE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
gimp_operation_tile_source_init (GimpOperationTileSource *self)
{
}
static void
gimp_operation_tile_source_finalize (GObject *object)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (object);
if (self->tile_manager)
{
tile_manager_unref (self->tile_manager);
self->tile_manager = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_operation_tile_source_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (object);
switch (property_id)
{
case PROP_TILE_MANAGER:
g_value_set_boxed (value, self->tile_manager);
break;
case PROP_LINEAR:
g_value_set_boolean (value, self->linear);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_operation_tile_source_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (object);
switch (property_id)
{
case PROP_TILE_MANAGER:
if (self->tile_manager)
tile_manager_unref (self->tile_manager);
self->tile_manager = g_value_dup_boxed (value);
break;
case PROP_LINEAR:
self->linear = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_operation_tile_source_prepare (GeglOperation *operation)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (operation);
if (self->tile_manager)
{
gegl_operation_set_format (operation, "output",
babl_format ("RaGaBaA float"));
}
}
static GeglRectangle
gimp_operation_tile_source_get_bounding_box (GeglOperation *operation)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (operation);
GeglRectangle result = { 0, };
if (self->tile_manager)
{
result.x = 0;
result.y = 0;
result.width = tile_manager_width (self->tile_manager);
result.height = tile_manager_height (self->tile_manager);
}
return result;
}
static gboolean
gimp_operation_tile_source_process (GeglOperation *operation,
GeglBuffer *output,
const GeglRectangle *result)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (operation);
const Babl *format;
PixelRegion srcPR;
gpointer pr;
if (! self->tile_manager)
return FALSE;
format = gimp_bpp_to_babl_format (tile_manager_bpp (self->tile_manager),
self->linear);
pixel_region_init (&srcPR, self->tile_manager,
result->x, result->y,
result->width, result->height,
FALSE);
for (pr = pixel_regions_register (1, &srcPR);
pr;
pr = pixel_regions_process (pr))
{
GeglRectangle rect = { srcPR.x, srcPR.y, srcPR.w, srcPR.h };
gegl_buffer_set (output, &rect, format, srcPR.data, srcPR.rowstride);
}
return TRUE;
}