static gpointer
gegl_tile_backend_file_set_tile (GeglTileSource *self,
GeglTile *tile,
gint x,
gint y,
gint z)
{
GeglTileBackend *backend;
GeglTileBackendFile *tile_backend_file;
GeglBufferTile *entry;
backend = GEGL_TILE_BACKEND (self);
tile_backend_file = GEGL_TILE_BACKEND_FILE (backend);
entry = gegl_tile_backend_file_lookup_entry (tile_backend_file, x, y, z);
if (entry == NULL)
{
entry = gegl_tile_backend_file_file_entry_new (tile_backend_file);
entry->x = x;
entry->y = y;
entry->z = z;
g_hash_table_insert (tile_backend_file->index, entry, entry);
}
entry->rev = gegl_tile_get_rev (tile);
gegl_tile_backend_file_file_entry_write (tile_backend_file, entry, gegl_tile_get_data (tile));
gegl_tile_mark_as_stored (tile);
return NULL;
}
/* this is the only place that actually should
* instantiate tiles, when the cache is large enough
* that should make sure we don't hit this function
* too often.
*/
static GeglTile *
gegl_tile_backend_file_get_tile (GeglTileSource *self,
gint x,
gint y,
gint z)
{
GeglTileBackend *backend;
GeglTileBackendFile *tile_backend_file;
GeglBufferTile *entry;
GeglTile *tile = NULL;
gint tile_size;
backend = GEGL_TILE_BACKEND (self);
tile_backend_file = GEGL_TILE_BACKEND_FILE (backend);
entry = gegl_tile_backend_file_lookup_entry (tile_backend_file, x, y, z);
if (!entry)
return NULL;
tile_size = gegl_tile_backend_get_tile_size (GEGL_TILE_BACKEND (self));
tile = gegl_tile_new (tile_size);
gegl_tile_set_rev (tile, entry->rev);
gegl_tile_mark_as_stored (tile);
gegl_tile_backend_file_file_entry_read (tile_backend_file, entry, gegl_tile_get_data (tile));
return tile;
}
static gpointer
gegl_tile_backend_file_flush (GeglTileSource *source,
GeglTile *tile,
gint x,
gint y,
gint z)
{
GeglTileBackend *backend;
GeglTileBackendFile *self;
GList *tiles;
backend = GEGL_TILE_BACKEND (source);
self = GEGL_TILE_BACKEND_FILE (backend);
gegl_tile_backend_file_ensure_exist (self);
GEGL_NOTE (GEGL_DEBUG_TILE_BACKEND, "flushing %s", self->path);
self->header.rev ++;
self->header.next = self->next_pre_alloc; /* this is the offset
we start handing
out headers from*/
tiles = g_hash_table_get_keys (self->index);
if (tiles == NULL)
self->header.next = 0;
else
{
GList *iter;
for (iter = tiles; iter; iter = iter->next)
{
GeglBufferItem *item = iter->data;
gegl_tile_backend_file_write_block (self, &item->block);
}
gegl_tile_backend_file_write_block (self, NULL); /* terminate the index */
g_list_free (tiles);
}
gegl_tile_backend_file_write_header (self);
#if HAVE_GIO
g_output_stream_flush (self->o, NULL, NULL);
#else
fsync (self->o);
#endif
GEGL_NOTE (GEGL_DEBUG_TILE_BACKEND, "flushed %s", self->path);
return (gpointer)0xf0f;
}
static gpointer
gegl_tile_backend_file_exist_tile (GeglTileSource *self,
GeglTile *tile,
gint x,
gint y,
gint z)
{
GeglTileBackend *backend;
GeglTileBackendFile *tile_backend_file;
GeglBufferTile *entry;
backend = GEGL_TILE_BACKEND (self);
tile_backend_file = GEGL_TILE_BACKEND_FILE (backend);
entry = gegl_tile_backend_file_lookup_entry (tile_backend_file, x, y, z);
return entry!=NULL?((gpointer)0x1):NULL;
}
static void
gegl_tile_backend_file_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GeglTileBackendFile *self = GEGL_TILE_BACKEND_FILE (object);
switch (property_id)
{
case PROP_PATH:
g_value_set_string (value, self->path);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gpointer
gegl_tile_backend_file_void_tile (GeglTileSource *self,
GeglTile *tile,
gint x,
gint y,
gint z)
{
GeglTileBackend *backend;
GeglTileBackendFile *tile_backend_file;
GeglBufferTile *entry;
backend = GEGL_TILE_BACKEND (self);
tile_backend_file = GEGL_TILE_BACKEND_FILE (backend);
entry = gegl_tile_backend_file_lookup_entry (tile_backend_file, x, y, z);
if (entry != NULL)
{
gegl_tile_backend_file_file_entry_destroy (entry, tile_backend_file);
}
return NULL;
}
static GObject *
gegl_tile_backend_file_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GeglTileBackendFile *self;
GeglTileBackend *backend;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
self = GEGL_TILE_BACKEND_FILE (object);
backend = GEGL_TILE_BACKEND (object);
GEGL_NOTE (GEGL_DEBUG_TILE_BACKEND, "constructing file backend: %s", self->path);
self->file = g_file_new_for_commandline_arg (self->path);
self->i = self->o = -1;
self->index = g_hash_table_new (gegl_tile_backend_file_hashfunc, gegl_tile_backend_file_equalfunc);
/* If the file already exists open it, assuming it is a GeglBuffer. */
if (g_access (self->path, F_OK) != -1)
{
goffset offset = 0;
/* Install a monitor for changes to the file in case other applications
* might be writing to the buffer
*/
self->monitor = g_file_monitor_file (self->file, G_FILE_MONITOR_NONE,
NULL, NULL);
g_signal_connect (self->monitor, "changed",
G_CALLBACK (gegl_tile_backend_file_file_changed),
self);
self->o = g_open (self->path, O_RDWR|O_CREAT, 0770);
if (self->o == -1)
{
/* Try again but this time with only read access. This is
* a quick-fix for make distcheck, where img_cmp fails
* when it opens a GeglBuffer file in the source tree
* (which is read-only).
*/
self->o = g_open (self->path, O_RDONLY, 0770);
if (self->o == -1)
g_warning ("%s: Could not open '%s': %s", G_STRFUNC, self->path, g_strerror (errno));
}
self->i = dup (self->o);
self->header = gegl_buffer_read_header (self->i, &offset)->header;
self->header.rev = self->header.rev -1;
/* we are overriding all of the work of the actual constructor here,
* a really evil hack :d
*/
backend->priv->tile_width = self->header.tile_width;
backend->priv->tile_height = self->header.tile_height;
backend->priv->format = babl_format (self->header.description);
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;
/* insert each of the entries into the hash table */
gegl_tile_backend_file_load_index (self, TRUE);
self->exist = TRUE;
g_assert (self->i != -1);
g_assert (self->o != -1);
/* to autoflush gegl_buffer_set */
/* XXX: poking at internals, icky */
backend->priv->shared = TRUE;
}
else
{
self->exist = FALSE; /* this is also the default, the file will be created on demand */
}
g_assert (self->file);
backend->priv->header = &self->header;
return object;
}
static GObject *
gegl_tile_backend_file_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GeglTileBackendFile *self;
GeglTileBackend *backend;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
self = GEGL_TILE_BACKEND_FILE (object);
backend = GEGL_TILE_BACKEND (object);
GEGL_NOTE (GEGL_DEBUG_TILE_BACKEND, "constructing file backend: %s", self->path);
#if HAVE_GIO
self->file = g_file_new_for_commandline_arg (self->path);
#else
self->i = self->o = -1;
#endif
self->index = g_hash_table_new (gegl_tile_backend_file_hashfunc, gegl_tile_backend_file_equalfunc);
/* If the file already exists open it, assuming it is a GeglBuffer. */
#if HAVE_GIO
if (g_file_query_exists (self->file, NULL))
#else
if (access (self->path, F_OK) != -1)
#endif
{
goffset offset = 0;
#if HAVE_GIO
/* Install a monitor for changes to the file in case other applications
* might be writing to the buffer
*/
self->monitor = g_file_monitor_file (self->file, G_FILE_MONITOR_NONE,
NULL, NULL);
g_signal_connect (self->monitor, "changed",
G_CALLBACK (gegl_tile_backend_file_file_changed),
self);
{
GError *error = NULL;
self->io = G_IO_STREAM (g_file_open_readwrite (self->file, NULL, &error));
if (error)
{
/* Try again but this time with only read access. This is
* a quick-fix for make distcheck, where img_cmp fails
* when it opens a GeglBuffer file in the source tree
* (which is read-only).
*/
g_error_free (error);
error = NULL;
self->i = G_INPUT_STREAM (g_file_read (self->file, NULL, &error));
if (error)
{
g_warning ("%s: %s", G_STRLOC, error->message);
g_error_free (error);
error = NULL;
}
}
else
{
self->o = g_io_stream_get_output_stream (self->io);
self->i = g_io_stream_get_input_stream (self->io);
}
}
#else
self->o = open (self->path, O_RDWR|O_CREAT, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
self->i = dup (self->o);
#endif
/*self->i = G_INPUT_STREAM (g_file_read (self->file, NULL, NULL));*/
self->header = gegl_buffer_read_header (self->i, &offset)->header;
self->header.rev = self->header.rev -1;
/* we are overriding all of the work of the actual constructor here,
* a really evil hack :d
*/
backend->priv->tile_width = self->header.tile_width;
backend->priv->tile_height = self->header.tile_height;
backend->priv->format = babl_format (self->header.description);
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;
/* insert each of the entries into the hash table */
gegl_tile_backend_file_load_index (self, TRUE);
self->exist = TRUE;
#if HAVE_GIO
/* We can only assert input stream, we won't have an output
* stream on read-only files
*/
g_assert (self->i);
#else
g_assert (self->i != -1);
g_assert (self->o != -1);
#endif
/* to autoflush gegl_buffer_set */
/* XXX: poking at internals, icky */
backend->priv->shared = TRUE;
}
else
{
self->exist = FALSE; /* this is also the default, the file will be created on demand */
}
#if HAVE_GIO
g_assert (self->file);
#endif
backend->priv->header = &self->header;
return object;
}
