/* This file is part of GEGL.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 3 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.

 *

 * Copyright 2006, 2007 Øyvind Kolås <pippin@gimp.org>

 */

#include "config.h"

#include <glib.h>

#include <glib-object.h>

#include <string.h>

#include <babl/babl.h>

#include "gegl-buffer-types.h"

#include "gegl-buffer-private.h"

#include "gegl-tile-source.h"

#include "gegl-tile-backend.h"

G_DEFINE_TYPE (GeglTileBackend, gegl_tile_backend, GEGL_TYPE_TILE_SOURCE)

static GObjectClass * parent_class = NULL;

enum

{

  PROP_0,

  PROP_TILE_WIDTH,

  PROP_TILE_HEIGHT,

  PROP_PX_SIZE,

  PROP_TILE_SIZE,

  PROP_FORMAT

};

static void

get_property (GObject    *gobject,

              guint       property_id,

              GValue     *value,

              GParamSpec *pspec)

{

  GeglTileBackend *backend = GEGL_TILE_BACKEND (gobject);

  switch (property_id)

    {

      case PROP_TILE_WIDTH:

        g_value_set_int (value, backend->priv->tile_width);

        break;

      case PROP_TILE_HEIGHT:

        g_value_set_int (value, backend->priv->tile_height);

        break;

      case PROP_TILE_SIZE:

        g_value_set_int (value, backend->priv->tile_size);

        break;

      case PROP_PX_SIZE:

        g_value_set_int (value, backend->priv->px_size);

        break;

      case PROP_FORMAT:

        g_value_set_pointer (value, (void*)backend->priv->format);

        break;

      default:

        G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);

        break;

    }

}

static void

set_property (GObject      *gobject,

              guint         property_id,

              const GValue *value,

              GParamSpec   *pspec)

{

  GeglTileBackend *backend = GEGL_TILE_BACKEND (gobject);

  switch (property_id)

    {

      case PROP_TILE_WIDTH:

        backend->priv->tile_width = g_value_get_int (value);

        return;

      case PROP_TILE_HEIGHT:

        backend->priv->tile_height = g_value_get_int (value);

        return;

      case PROP_FORMAT:

        backend->priv->format = g_value_get_pointer (value);

        break;

      default:

        G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);

        break;

    }

}

static GObject *

constructor (GType                  type,

             guint                  n_params,

             GObjectConstructParam *params)

{

  GObject         *object;

  GeglTileBackend *backend;

  object  = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);

  backend = GEGL_TILE_BACKEND (object);

  g_assert (backend->priv->tile_width > 0 && backend->priv->tile_height > 0);

  g_assert (backend->priv->format);

  backend->priv->px_size = babl_format_get_bytes_per_pixel (backend->priv->format);

  backend->priv->tile_size = backend->priv->tile_width * backend->priv->tile_height * backend->priv->px_size;

  return object;

}

static void

gegl_tile_backend_class_init (GeglTileBackendClass *klass)

{

  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

  parent_class  = g_type_class_peek_parent (klass);

  gobject_class->set_property = set_property;

  gobject_class->get_property = get_property;

  gobject_class->constructor  = constructor;

  g_object_class_install_property (gobject_class, PROP_TILE_WIDTH,

                                   g_param_spec_int ("tile-width", "tile-width", "Tile width in pixels",

                                                     0, G_MAXINT, 0,

                                                     G_PARAM_READWRITE |

                                                     G_PARAM_CONSTRUCT_ONLY));

  g_object_class_install_property (gobject_class, PROP_TILE_HEIGHT,

                                   g_param_spec_int ("tile-height", "tile-height", "Tile height in pixels",

                                                     0, G_MAXINT, 0,

                                                     G_PARAM_READWRITE |

                                                     G_PARAM_CONSTRUCT_ONLY));

  g_object_class_install_property (gobject_class, PROP_TILE_SIZE,

                                   g_param_spec_int ("tile-size", "tile-size", "Size of the tiles linear buffer in bytes",

                                                     0, G_MAXINT, 0,

                                                     G_PARAM_READABLE));

  g_object_class_install_property (gobject_class, PROP_PX_SIZE,

                                   g_param_spec_int ("px-size", "px-size", "Size of a single pixel in bytes",

                                                     0, G_MAXINT, 0,

                                                     G_PARAM_READABLE));

  g_object_class_install_property (gobject_class, PROP_FORMAT,

                                   g_param_spec_pointer ("format", "format", "babl format",

                                                         G_PARAM_READWRITE |

                                                         G_PARAM_CONSTRUCT_ONLY));

  g_type_class_add_private (gobject_class, sizeof (GeglTileBackendPrivate));

}

#define GEGL_TILE_BACKEND_GET_PRIVATE(obj) \

    (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GEGL_TYPE_TILE_BACKEND, GeglTileBackendPrivate))

static void

gegl_tile_backend_init (GeglTileBackend *self)

{

  self->priv = GEGL_TILE_BACKEND_GET_PRIVATE (self);

  self->priv->shared = FALSE;

}

gint gegl_tile_backend_get_tile_size (GeglTileBackend *tile_backend)

{

  return tile_backend->priv->tile_size;

}

const Babl *gegl_tile_backend_get_format (GeglTileBackend *tile_backend)

{

  return tile_backend->priv->format;

}

void  gegl_tile_backend_set_extent    (GeglTileBackend *tile_backend,

                                       GeglRectangle   *rectangle)

{

  tile_backend->priv->extent = *rectangle;

}

GeglRectangle gegl_tile_backend_get_extent (GeglTileBackend *tile_backend)

{

  return tile_backend->priv->extent;

}

GeglTileSource *gegl_tile_backend_peek_storage (GeglTileBackend *backend)

{

  return backend->priv->storage;

}