Adding upstream version 2.10.34.upstream/2.10.34upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 313 insertions, 0 deletions

diff --git a/libgimp/gimptilebackendplugin.c b/libgimp/gimptilebackendplugin.c
new file mode 100644
index 0000000..d1767fa
--- /dev/null
+++ b/libgimp/gimptilebackendplugin.c
@@ -0,0 +1,313 @@
+/* gimptilebackendtilemanager.c
+ * Copyright (C) 2012 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <gegl.h>
+
+#define GIMP_DISABLE_DEPRECATION_WARNINGS
+
+#include "gimp.h"
+#include "gimptilebackendplugin.h"
+
+
+#define TILE_WIDTH  gimp_tile_width()
+#define TILE_HEIGHT gimp_tile_height()
+
+
+struct _GimpTileBackendPluginPrivate
+{
+  GimpDrawable *drawable;
+  gboolean      shadow;
+  gint          mul;
+};
+
+
+static gint
+gimp_gegl_tile_mul (void)
+{
+  static gint     mul    = 1;
+  static gboolean inited = FALSE;
+
+  if (G_LIKELY (inited))
+    return mul;
+
+  inited = TRUE;
+
+  if (g_getenv ("GIMP_GEGL_TILE_MUL"))
+    mul = atoi (g_getenv ("GIMP_GEGL_TILE_MUL"));
+
+  if (mul < 1)
+    mul = 1;
+
+  return mul;
+}
+
+static void     gimp_tile_backend_plugin_finalize (GObject         *object);
+static gpointer gimp_tile_backend_plugin_command  (GeglTileSource  *tile_store,
+                                                   GeglTileCommand  command,
+                                                   gint             x,
+                                                   gint             y,
+                                                   gint             z,
+                                                   gpointer         data);
+
+static void       gimp_tile_write_mul (GimpTileBackendPlugin *backend_plugin,
+                                       gint                   x,
+                                       gint                   y,
+                                       guchar                *source);
+
+static GeglTile * gimp_tile_read_mul (GimpTileBackendPlugin *backend_plugin,
+                                      gint                   x,
+                                      gint                   y);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpTileBackendPlugin, _gimp_tile_backend_plugin,
+                            GEGL_TYPE_TILE_BACKEND)
+
+#define parent_class _gimp_tile_backend_plugin_parent_class
+
+
+static GMutex backend_plugin_mutex;
+
+
+static void
+_gimp_tile_backend_plugin_class_init (GimpTileBackendPluginClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gimp_tile_backend_plugin_finalize;
+}
+
+static void
+_gimp_tile_backend_plugin_init (GimpTileBackendPlugin *backend)
+{
+  GeglTileSource *source = GEGL_TILE_SOURCE (backend);
+
+  backend->priv = _gimp_tile_backend_plugin_get_instance_private (backend);
+
+  source->command = gimp_tile_backend_plugin_command;
+}
+
+static void
+gimp_tile_backend_plugin_finalize (GObject *object)
+{
+  GimpTileBackendPlugin *backend = GIMP_TILE_BACKEND_PLUGIN (object);
+
+  if (backend->priv->drawable) /* This also causes a flush */
+    gimp_drawable_detach (backend->priv->drawable);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gpointer
+gimp_tile_backend_plugin_command (GeglTileSource  *tile_store,
+                                  GeglTileCommand  command,
+                                  gint             x,
+                                  gint             y,
+                                  gint             z,
+                                  gpointer         data)
+{
+  GimpTileBackendPlugin *backend_plugin = GIMP_TILE_BACKEND_PLUGIN (tile_store);
+  gpointer               result         = NULL;
+
+  switch (command)
+    {
+    case GEGL_TILE_GET:
+      /* TODO: fetch mipmapped tiles directly from gimp, instead of returning
+       * NULL to render them locally
+       */
+      if (z == 0)
+        {
+          g_mutex_lock (&backend_plugin_mutex);
+
+          result = gimp_tile_read_mul (backend_plugin, x, y);
+
+          g_mutex_unlock (&backend_plugin_mutex);
+        }
+      break;
+
+    case GEGL_TILE_SET:
+      /* TODO: actually store mipmapped tiles */
+      if (z == 0)
+        {
+          g_mutex_lock (&backend_plugin_mutex);
+
+          gimp_tile_write_mul (backend_plugin, x, y, gegl_tile_get_data (data));
+
+          g_mutex_unlock (&backend_plugin_mutex);
+        }
+
+      gegl_tile_mark_as_stored (data);
+      break;
+
+    case GEGL_TILE_FLUSH:
+      g_mutex_lock (&backend_plugin_mutex);
+
+      gimp_drawable_flush (backend_plugin->priv->drawable);
+
+      g_mutex_unlock (&backend_plugin_mutex);
+      break;
+
+    default:
+      result = gegl_tile_backend_command (GEGL_TILE_BACKEND (tile_store),
+                                          command, x, y, z, data);
+      break;
+    }
+
+  return result;
+}
+
+static GeglTile *
+gimp_tile_read_mul (GimpTileBackendPlugin *backend_plugin,
+                    gint                   x,
+                    gint                   y)
+{
+  GimpTileBackendPluginPrivate *priv    = backend_plugin->priv;
+  GeglTileBackend              *backend = GEGL_TILE_BACKEND (backend_plugin);
+  GeglTile                     *tile;
+  gint                          tile_size;
+  gint                          u, v;
+  gint                          mul = priv->mul;
+  guchar                       *tile_data;
+
+  x *= mul;
+  y *= mul;
+
+  tile_size  = gegl_tile_backend_get_tile_size (backend);
+  tile       = gegl_tile_new (tile_size);
+  tile_data  = gegl_tile_get_data (tile);
+
+  for (u = 0; u < mul; u++)
+    {
+      for (v = 0; v < mul; v++)
+        {
+          GimpTile *gimp_tile;
+
+          if (x + u >= priv->drawable->ntile_cols ||
+              y + v >= priv->drawable->ntile_rows)
+            continue;
+
+          gimp_tile = gimp_drawable_get_tile (priv->drawable,
+                                              priv->shadow,
+                                              y + v, x + u);
+          _gimp_tile_ref_nocache (gimp_tile, TRUE);
+
+          {
+            gint ewidth           = gimp_tile->ewidth;
+            gint eheight          = gimp_tile->eheight;
+            gint bpp              = gimp_tile->bpp;
+            gint tile_stride      = mul * TILE_WIDTH * bpp;
+            gint gimp_tile_stride = ewidth * bpp;
+            gint row;
+
+            for (row = 0; row < eheight; row++)
+              {
+                memcpy (tile_data + (row + TILE_HEIGHT * v) *
+                        tile_stride + u * TILE_WIDTH * bpp,
+                        ((gchar *) gimp_tile->data) + row * gimp_tile_stride,
+                        gimp_tile_stride);
+              }
+          }
+
+          gimp_tile_unref (gimp_tile, FALSE);
+        }
+    }
+
+  return tile;
+}
+
+static void
+gimp_tile_write_mul (GimpTileBackendPlugin *backend_plugin,
+                     gint                   x,
+                     gint                   y,
+                     guchar                *source)
+{
+  GimpTileBackendPluginPrivate *priv = backend_plugin->priv;
+  gint                          u, v;
+  gint                          mul = priv->mul;
+
+  x *= mul;
+  y *= mul;
+
+  for (v = 0; v < mul; v++)
+    {
+      for (u = 0; u < mul; u++)
+        {
+          GimpTile *gimp_tile;
+
+          if (x + u >= priv->drawable->ntile_cols ||
+              y + v >= priv->drawable->ntile_rows)
+            continue;
+
+          gimp_tile = gimp_drawable_get_tile (priv->drawable,
+                                              priv->shadow,
+                                              y+v, x+u);
+          _gimp_tile_ref_nocache (gimp_tile, FALSE);
+
+          {
+            gint ewidth           = gimp_tile->ewidth;
+            gint eheight          = gimp_tile->eheight;
+            gint bpp              = gimp_tile->bpp;
+            gint tile_stride      = mul * TILE_WIDTH * bpp;
+            gint gimp_tile_stride = ewidth * bpp;
+            gint row;
+
+            for (row = 0; row < eheight; row++)
+              memcpy (((gchar *)gimp_tile->data) + row * gimp_tile_stride,
+                      source + (row + v * TILE_HEIGHT) *
+                      tile_stride + u * TILE_WIDTH * bpp,
+                      gimp_tile_stride);
+          }
+
+          gimp_tile_unref (gimp_tile, TRUE);
+        }
+    }
+}
+
+GeglTileBackend *
+_gimp_tile_backend_plugin_new (GimpDrawable *drawable,
+                               gint          shadow)
+{
+  GeglTileBackend       *backend;
+  GimpTileBackendPlugin *backend_plugin;
+  const Babl            *format;
+  gint                   width  = gimp_drawable_width (drawable->drawable_id);
+  gint                   height = gimp_drawable_height (drawable->drawable_id);
+  gint                   mul    = gimp_gegl_tile_mul ();
+
+  format = gimp_drawable_get_format (drawable->drawable_id);
+
+  backend = g_object_new (GIMP_TYPE_TILE_BACKEND_PLUGIN,
+                          "tile-width",  TILE_WIDTH  * mul,
+                          "tile-height", TILE_HEIGHT * mul,
+                          "format",      format,
+                          NULL);
+
+  backend_plugin = GIMP_TILE_BACKEND_PLUGIN (backend);
+
+  backend_plugin->priv->drawable = drawable;
+  backend_plugin->priv->mul      = mul;
+  backend_plugin->priv->shadow   = shadow;
+
+  gegl_tile_backend_set_extent (backend,
+                                GEGL_RECTANGLE (0, 0, width, height));
+
+  return backend;
+}