libgimp: add a GeglBuffer backend for plug-ins
Also added an API to get GeglBuffers for drawables, you choose whether you get.
This commit is contained in:
Øyvind Kolås
committed by
Michael Natterer
Michael Natterer
parent
153f56655a
commit
4bdbff08d7
293
libgimp/gimptilebackendplugin.c
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293
libgimp/gimptilebackendplugin.c
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/* gimptilebackendtilemanager.c
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* Copyright (C) 2012 Øyvind Kolås <pippin@gimp.org>
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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 <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <gegl.h>
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#include "gimp.h"
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#include "gimptilebackendplugin.h"
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#define TILE_WIDTH gimp_tile_width()
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#define TILE_HEIGHT gimp_tile_width()
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struct _GimpTileBackendPluginPrivate
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{
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GimpDrawable *drawable;
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gboolean shadow;
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int mul;
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};
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static int gimp_gegl_tile_mul (void)
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{
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static int mul = 2;
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static gboolean inited = 0;
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if (G_LIKELY (inited))
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return mul;
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inited = 1;
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if (g_getenv ("GIMP_GEGL_TILE_MUL"))
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mul = atoi (g_getenv ("GIMP_GEGL_TILE_MUL"));
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if (mul < 1)
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mul = 1;
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return mul;
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}
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static const Babl *get_format (gint32 drawable_ID);
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static const Babl *get_format (gint32 drawable_ID)
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{
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gint32 image_ID = gimp_item_get_image (drawable_ID);
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switch (gimp_drawable_type (drawable_ID))
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{
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case GIMP_RGB_IMAGE: return babl_format ("RGB u8");
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case GIMP_RGBA_IMAGE: return babl_format ("RGBA u8");
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case GIMP_GRAY_IMAGE: return babl_format ("Y u8");
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case GIMP_GRAYA_IMAGE: return babl_format ("YA u8");
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case GIMP_INDEXED_IMAGE:
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case GIMP_INDEXEDA_IMAGE:
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{
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const Babl *pala, *pal;
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gint ncols;
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guchar *cmap = gimp_image_get_colormap (image_ID, &ncols);
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babl_new_palette (NULL, &pal, &pala);
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babl_palette_set_palette (pal, babl_format ("RGB u8"),
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cmap, ncols);
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g_free (cmap);
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if (gimp_drawable_type (drawable_ID) == GIMP_INDEXEDA_IMAGE)
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return pala;
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return pal;
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}
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}
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return NULL;
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}
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static void gimp_tile_backend_plugin_finalize (GObject *object);
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static gpointer gimp_tile_backend_plugin_command (GeglTileSource *tile_store,
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GeglTileCommand command,
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gint x,
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gint y,
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gint z,
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gpointer data);
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static void gimp_tile_write_mul (GimpTileBackendPlugin *backend_plugin,
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gint x,
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gint y,
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guchar *source);
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static GeglTile * gimp_tile_read_mul (GimpTileBackendPlugin *backend_plugin,
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gint x,
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gint y);
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G_DEFINE_TYPE (GimpTileBackendPlugin, gimp_tile_backend_plugin,
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GEGL_TYPE_TILE_BACKEND)
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#define parent_class gimp_tile_backend_plugin_parent_class
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static void
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gimp_tile_backend_plugin_class_init (GimpTileBackendPluginClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gimp_tile_backend_plugin_finalize;
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g_type_class_add_private (klass, sizeof (GimpTileBackendPluginPrivate));
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gimp_tile_cache_size (1024);
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}
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static void
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gimp_tile_backend_plugin_init (GimpTileBackendPlugin *backend)
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{
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GeglTileSource *source = GEGL_TILE_SOURCE (backend);
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backend->priv = G_TYPE_INSTANCE_GET_PRIVATE (backend,
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GIMP_TYPE_TILE_BACKEND_PLUGIN,
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GimpTileBackendPluginPrivate);
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source->command = gimp_tile_backend_plugin_command;
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}
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static void
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gimp_tile_backend_plugin_finalize (GObject *object)
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{
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GimpTileBackendPlugin *backend = GIMP_TILE_BACKEND_PLUGIN (object);
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if (backend->priv->drawable) /* This also causes a flush */
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gimp_drawable_detach (backend->priv->drawable);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gpointer
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gimp_tile_backend_plugin_command (GeglTileSource *tile_store,
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GeglTileCommand command,
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gint x,
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gint y,
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gint z,
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gpointer data)
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{
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GimpTileBackendPlugin *backend_plugin;
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backend_plugin = GIMP_TILE_BACKEND_PLUGIN (tile_store);
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switch (command)
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{
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case GEGL_TILE_GET:
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return gimp_tile_read_mul (backend_plugin, x, y);
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case GEGL_TILE_SET:
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gimp_tile_write_mul (backend_plugin, x, y, gegl_tile_get_data (data));
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gegl_tile_mark_as_stored (data);
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return NULL;
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default:
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g_assert (command < GEGL_TILE_LAST_COMMAND && command >= 0);
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}
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return NULL;
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}
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static GeglTile *
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gimp_tile_read_mul (GimpTileBackendPlugin *backend_plugin,
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gint x,
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gint y)
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{
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GimpTileBackendPluginPrivate *priv = backend_plugin->priv;
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GeglTileBackend *backend;
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GeglTile *tile;
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gint tile_size;
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int u, v;
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int mul = priv->mul;
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unsigned char *tile_data;
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x *= mul;
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y *= mul;
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backend = GEGL_TILE_BACKEND (backend_plugin);
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tile_size = gegl_tile_backend_get_tile_size (backend);
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tile = gegl_tile_new (tile_size);
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tile_data = gegl_tile_get_data (tile);
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for (u = 0; u < mul; u++)
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for (v = 0; v < mul; v++)
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{
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GimpTile *gimp_tile;
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if (x + u >= priv->drawable->ntile_cols ||
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y + v >= priv->drawable->ntile_rows)
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continue;
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gimp_tile = gimp_drawable_get_tile (priv->drawable,
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priv->shadow,
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y+v, x+u);
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gimp_tile_ref (gimp_tile);
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{
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gint ewidth = gimp_tile->ewidth;
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gint eheight = gimp_tile->eheight;
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gint bpp = gimp_tile->bpp;
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gint tile_stride = mul * TILE_WIDTH * bpp;
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gint gimp_tile_stride = ewidth * bpp;
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gint row;
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for (row = 0; row < eheight; row++)
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{
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memcpy (tile_data + (row + TILE_HEIGHT * v) *
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tile_stride + u * TILE_WIDTH * bpp,
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((char*)gimp_tile->data) + row * gimp_tile_stride,
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gimp_tile_stride);
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}
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}
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gimp_tile_unref (gimp_tile, FALSE);
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}
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return tile;
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}
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static void
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gimp_tile_write_mul (GimpTileBackendPlugin *backend_plugin,
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gint x,
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gint y,
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guchar *source)
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{
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GimpTileBackendPluginPrivate *priv = backend_plugin->priv;
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int u, v;
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int mul = priv->mul;
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if (!priv->shadow)
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return;
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x *= mul;
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y *= mul;
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for (v = 0; v < mul; v++)
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for (u = 0; u < mul; u++)
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{
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GimpTile *gimp_tile;
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if (x + u >= priv->drawable->ntile_cols ||
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y + v >= priv->drawable->ntile_rows)
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continue;
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gimp_tile = gimp_drawable_get_tile (priv->drawable,
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priv->shadow,
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y+v, x+u);
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gimp_tile_ref (gimp_tile);
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{
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gint ewidth = gimp_tile->ewidth;
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gint eheight = gimp_tile->eheight;
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gint bpp = gimp_tile->bpp;
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gint tile_stride = mul * TILE_WIDTH * bpp;
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gint gimp_tile_stride = ewidth * bpp;
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gint row;
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for (row = 0; row < eheight; row++)
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memcpy (((char*)gimp_tile->data) + row * gimp_tile_stride,
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source + (row + v * TILE_HEIGHT) *
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tile_stride + u * TILE_WIDTH * bpp,
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gimp_tile_stride);
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}
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gimp_tile_unref (gimp_tile, TRUE);
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}
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}
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GeglTileBackend *
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gimp_tile_backend_plugin_new (GimpDrawable *drawable,
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gint shadow)
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{
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const Babl *format;
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GeglTileBackend *ret;
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GimpTileBackendPlugin *backend_plugin;
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GimpTileBackendPluginPrivate *priv;
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gint width = drawable->width;
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gint height = drawable->height;
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gint mul = gimp_gegl_tile_mul ();
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GeglRectangle rect = { 0, 0, width, height};
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format = get_format (drawable->drawable_id);
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ret = g_object_new (GIMP_TYPE_TILE_BACKEND_PLUGIN,
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"tile-width", TILE_WIDTH * mul,
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"tile-height", TILE_HEIGHT * mul,
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"format", format,
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NULL);
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backend_plugin = GIMP_TILE_BACKEND_PLUGIN (ret);
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priv = backend_plugin->priv;
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priv->drawable = drawable;
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priv->mul = mul;
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priv->shadow = shadow;
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gegl_tile_backend_set_extent (ret, &rect);
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return ret;
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}
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