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gimptilebackendtilemanager: add utility call to construct buffer

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For this utility call as well as the backend constructor itself pass a boolean
to indicate if write access to the buffer is desired.
This commit is contained in:
Øyvind Kolås
2012-03-13 12:48:10 +00:00
parent 5362448044
commit 5d6662ad00
2 changed files with 40 additions and 13 deletions
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47
app/gegl/gimptilebackendtilemanager.c
View File

@ -40,6 +40,7 @@
struct _GimpTileBackendTileManagerPrivate struct _GimpTileBackendTileManagerPrivate
{ {
TileManager *tile_manager; TileManager *tile_manager;
int write;
}; };
@ -140,7 +141,7 @@ gimp_tile_backend_tile_manager_command (GeglTileSource *tile_store,
int row; int row;
gimp_tile = tile_manager_get_at (backend_tm->priv->tile_manager, gimp_tile = tile_manager_get_at (backend_tm->priv->tile_manager,
x, y, TRUE, FALSE); x, y, TRUE, backend_tm->priv->write);
if (!gimp_tile) if (!gimp_tile)
return NULL; return NULL;
g_return_val_if_fail (gimp_tile != NULL, NULL); g_return_val_if_fail (gimp_tile != NULL, NULL);
@ -154,7 +155,7 @@ gimp_tile_backend_tile_manager_command (GeglTileSource *tile_store,
/* use the GimpTile directly as GEGL tile */ /* use the GimpTile directly as GEGL tile */
tile = gegl_tile_new_bare (); tile = gegl_tile_new_bare ();
gegl_tile_set_data_full (tile, tile_data_pointer (gimp_tile, 0, 0), gegl_tile_set_data_full (tile, tile_data_pointer (gimp_tile, 0, 0),
tile_size, tile_done, gimp_tile); tile_size, (void*)tile_done, gimp_tile);
} }
else else
{ {
@ -175,6 +176,8 @@ gimp_tile_backend_tile_manager_command (GeglTileSource *tile_store,
case GEGL_TILE_SET: case GEGL_TILE_SET:
{ {
GeglTile *tile = data; GeglTile *tile = data;
if (backend_tm->priv->write == FALSE)
return NULL;
gimp_tile_write (backend_tm, x, y, z, gegl_tile_get_data (tile)); gimp_tile_write (backend_tm, x, y, z, gegl_tile_get_data (tile));
gegl_tile_mark_as_stored (tile); gegl_tile_mark_as_stored (tile);
return NULL; return NULL;
@ -208,22 +211,29 @@ gimp_tile_write (GimpTileBackendTileManager *backend_tm,
if (!gimp_tile) if (!gimp_tile)
return; return;
tile_stride = TILE_WIDTH * tile_bpp (gimp_tile); if (source != tile_data_pointer (gimp_tile, 0, 0))
gimp_tile_stride = tile_ewidth (gimp_tile) * tile_bpp (gimp_tile);
for (row = 0; row < tile_eheight (gimp_tile); row++)
{ {
memcpy (tile_data_pointer (gimp_tile, 0, row), /* only copy when we are not 0 copy */
source + row * tile_stride, tile_stride = TILE_WIDTH * tile_bpp (gimp_tile);
gimp_tile_stride); gimp_tile_stride = tile_ewidth (gimp_tile) * tile_bpp (gimp_tile);
for (row = 0; row < tile_eheight (gimp_tile); row++)
{
memcpy (tile_data_pointer (gimp_tile, 0, row),
source + row * tile_stride,
gimp_tile_stride);
}
} }
tile_release (gimp_tile, FALSE); tile_release (gimp_tile, FALSE);
} }
GeglTileBackend * GeglTileBackend *
gimp_tile_backend_tile_manager_new (TileManager *tm) gimp_tile_backend_tile_manager_new (TileManager *tm,
gboolean write)
{ {
GeglTileBackend *ret; GeglTileBackend *ret;
GimpTileBackendTileManager *backend_tm;
gint width = tile_manager_width (tm); gint width = tile_manager_width (tm);
gint height = tile_manager_height (tm); gint height = tile_manager_height (tm);
gint bpp = tile_manager_bpp (tm); gint bpp = tile_manager_bpp (tm);
@ -234,10 +244,25 @@ gimp_tile_backend_tile_manager_new (TileManager *tm)
"tile-height", TILE_HEIGHT, "tile-height", TILE_HEIGHT,
"format", gimp_bpp_to_babl_format (bpp, FALSE), "format", gimp_bpp_to_babl_format (bpp, FALSE),
NULL); NULL);
backend_tm = GIMP_TILE_BACKEND_TILE_MANAGER (ret);
backend_tm->priv->write = write;
GIMP_TILE_BACKEND_TILE_MANAGER (ret)->priv->tile_manager = tile_manager_ref (tm); backend_tm->priv->tile_manager = tile_manager_ref (tm);
gegl_tile_backend_set_extent (ret, &rect); gegl_tile_backend_set_extent (ret, &rect);
return ret; return ret;
} }
GeglBuffer *
gimp_tile_manager_get_gegl_buffer (TileManager *tm,
gboolean write)
{
GeglTileBackend *backend;
GeglBuffer *buffer;
backend = gimp_tile_backend_tile_manager_new (tm, write);
buffer = gegl_buffer_new_for_backend (NULL, backend);
g_object_unref (backend);
return buffer;
}

6
app/gegl/gimptilebackendtilemanager.h
View File

@ -49,9 +49,11 @@ struct _GimpTileBackendTileManagerClass
GType gimp_tile_backend_tile_manager_get_type (void) G_GNUC_CONST; GType gimp_tile_backend_tile_manager_get_type (void) G_GNUC_CONST;
GeglTileBackend * gimp_tile_backend_tile_manager_new (TileManager *tm); GeglTileBackend * gimp_tile_backend_tile_manager_new (TileManager *tm,
gboolean write);
void gimp_tile_backend_tile_manager_stats (void); GeglBuffer * gimp_tile_manager_get_gegl_buffer (TileManager *tm,
gboolean write);
G_END_DECLS G_END_DECLS