GimpTile

typedef struct {
  guint         ewidth;     /* the effective width of the tile */
  guint         eheight;    /* the effective height of the tile */
  guint         bpp;        /* the bytes per pixel (1, 2, 3 or 4 ) */
  guint         tile_num;   /* the number of this tile within the drawable */
  guint16       ref_count;  /* reference count for the tile */
  guint         dirty : 1;  /* is the tile dirty? has it been modified? */
  guint         shadow: 1;  /* is this a shadow tile */
  guchar       *data;       /* the pixel data for the tile */
  GimpDrawable *drawable;   /* the drawable this tile came from */
} GimpTile;

gimp_tile_ref ()

void        gimp_tile_ref                   (GimpTile *tile);

gimp_tile_ref_zero ()

void        gimp_tile_ref_zero              (GimpTile *tile);

gimp_tile_unref ()

void        gimp_tile_unref                 (GimpTile *tile,
                                             gboolean dirty);

gimp_tile_flush ()

void        gimp_tile_flush                 (GimpTile *tile);

gimp_tile_cache_size ()

void        gimp_tile_cache_size            (gulong kilobytes);

Sets the size of the tile cache on the plug-in side. The tile cache is used to reduce the number of tiles exchanged between the GIMP core and the plug-in. See also gimp_tile_cache_ntiles().

gimp_tile_cache_ntiles ()

void        gimp_tile_cache_ntiles          (gulong ntiles);

Sets the size of the tile cache on the plug-in side. This function is similar to gimp_tile_cache_size() but allows to specify the number of tiles directly.

If your plug-in access pixels tile-by-tile, it doesn't need a tile cache at all. If however the plug-in accesses drawable pixel data row-by-row, it should set the tile cache large enough to hold the number of tiles per row. Double this size if your plug-in uses shadow tiles.