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operations: cleanup in gegl:buffer-source
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@mitchfoo
mitchfoo committed Feb 14, 2016
1 parent 1b365c8 commit a6de8d5
Showing 1 changed file with 82 additions and 73 deletions.
155 changes: 82 additions & 73 deletions operations/common/buffer-source.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,8 +22,8 @@

#ifdef GEGL_PROPERTIES

property_object(buffer, _("Input buffer"), GEGL_TYPE_BUFFER)
description (_("The GeglBuffer to load into the pipeline"))
property_object (buffer, _("Input buffer"), GEGL_TYPE_BUFFER)
description (_("The GeglBuffer to load into the pipeline"))

#else

Expand All @@ -40,29 +40,30 @@ typedef struct
static Priv *
get_priv (GeglProperties *o)
{
Priv *priv = (Priv*)o->user_data;
if (priv == NULL) {
priv = g_new0 (Priv, 1);
o->user_data = (void*) priv;
Priv *priv = o->user_data;

if (! priv)
{
priv = g_new0 (Priv, 1);
o->user_data = priv;
}

priv->buffer_changed_handler = 0;
}
return priv;
}

static void buffer_changed (GeglBuffer *buffer,
const GeglRectangle *rect,
gpointer userdata)
static void
buffer_changed (GeglBuffer *buffer,
const GeglRectangle *rect,
gpointer data)
{
gegl_operation_invalidate (GEGL_OPERATION (userdata), rect, FALSE);
gegl_operation_invalidate (data, rect, FALSE);
}


static void
gegl_buffer_source_prepare (GeglOperation *operation)
{
const Babl *format = NULL;
GeglProperties *o = GEGL_PROPERTIES (operation);
GeglProperties *o = GEGL_PROPERTIES (operation);
const Babl *format = NULL;

if (o->buffer)
format = gegl_buffer_get_format (GEGL_BUFFER (o->buffer));
Expand All @@ -73,49 +74,56 @@ gegl_buffer_source_prepare (GeglOperation *operation)
static GeglRectangle
get_bounding_box (GeglOperation *operation)
{
GeglRectangle result = {0,0,0,0};
GeglProperties *o = GEGL_PROPERTIES (operation);
GeglProperties *o = GEGL_PROPERTIES (operation);
GeglRectangle result = { 0, 0, 0, 0 };

if (o->buffer)
result = *gegl_buffer_get_extent (GEGL_BUFFER (o->buffer));

if (!o->buffer)
{
return result;
}
result = *gegl_buffer_get_extent (GEGL_BUFFER (o->buffer));
return result;
}

static void
my_set_property (GObject *gobject,
guint property_id,
const GValue *value,
GParamSpec *pspec)
my_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GeglOperation *operation = GEGL_OPERATION (gobject);
GeglProperties *o = GEGL_PROPERTIES (operation);
Priv *p = get_priv(o);
GObject *buffer = NULL;
GeglOperation *operation = GEGL_OPERATION (object);
GeglProperties *o = GEGL_PROPERTIES (operation);
Priv *p = get_priv (o);
GeglBuffer *buffer = NULL;

switch (property_id)
{
{
case PROP_buffer:
if (o->buffer) {
// Invariant: valid buffer should always have valid signal handler
g_assert(p->buffer_changed_handler > 0);
g_signal_handler_disconnect (o->buffer, p->buffer_changed_handler);
/* XXX: should decrement signal connected count */
}
buffer = G_OBJECT (g_value_get_object (value));
if (buffer) {
p->buffer_changed_handler = gegl_buffer_signal_connect (GEGL_BUFFER(buffer), "changed", G_CALLBACK(buffer_changed), operation);
}
if (o->buffer)
{
/* Invariant: valid buffer should always have valid signal handler */
g_assert (p->buffer_changed_handler > 0);
g_signal_handler_disconnect (o->buffer, p->buffer_changed_handler);
/* XXX: should decrement signal connected count */
}

buffer = g_value_get_object (value);

if (buffer)
{
p->buffer_changed_handler =
gegl_buffer_signal_connect (buffer, "changed",
G_CALLBACK (buffer_changed),
operation);
}
break;

default:
break;
}

/* The set_property provided by the chant system does the
* storing and reffing/unreffing of the input properties */
set_property(gobject, property_id, value, pspec);
/* The set_property provided by the chant system does the storing
* and reffing/unreffing of the input properties
*/
set_property (object, property_id, value, pspec);
}

static gboolean
Expand All @@ -129,70 +137,71 @@ process (GeglOperation *operation,

if (o->buffer)
{
g_object_ref (o->buffer); /* Add an extra reference, since
* gegl_operation_set_data is
* stealing one.
*/

/* override core behaviour, by resetting the buffer in the operation_context */
/* Override core behaviour, by resetting the buffer in the
* operation_context.
*
* Also add an extra reference, since take_object() is consuming
* one.
*/
gegl_operation_context_take_object (context, "output",
G_OBJECT (o->buffer));
/* mark that this buffer should not be used for in-place
* processing.
g_object_ref (o->buffer));

/* Mark that this buffer should not be used for in-place
* processing
*/
gegl_object_set_has_forked (G_OBJECT (o->buffer));
}

return TRUE;
}

static void
dispose (GObject *object)
{
GeglProperties *o = GEGL_PROPERTIES (object);
Priv *p = get_priv(o);
Priv *p = get_priv (o);

if (o->buffer)
{
// Invariant: valid buffer should always have valid signal handler
g_assert(p->buffer_changed_handler > 0);
/* Invariant: valid buffer should always have valid signal handler */
g_assert (p->buffer_changed_handler > 0);
g_signal_handler_disconnect (o->buffer, p->buffer_changed_handler);
/* XXX: should decrement signal connected count */
/* XXX: should decrement signal connected count */

g_object_unref (o->buffer);
o->buffer = NULL;
}

if (p) {
g_free(p);
o->user_data = NULL;
}
if (p)
{
g_free (p);
o->user_data = NULL;
}

G_OBJECT_CLASS (gegl_op_parent_class)->dispose (object);
}


static void
gegl_op_class_init (GeglOpClass *klass)
{
GeglOperationClass *operation_class;
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);

operation_class = GEGL_OPERATION_CLASS (klass);
object_class->set_property = my_set_property;
object_class->dispose = dispose;

operation_class->prepare = gegl_buffer_source_prepare;
operation_class->process = process;
operation_class->prepare = gegl_buffer_source_prepare;
operation_class->process = process;
operation_class->get_bounding_box = get_bounding_box;

G_OBJECT_CLASS (klass)->set_property = my_set_property;
G_OBJECT_CLASS (klass)->dispose = dispose;

gegl_operation_class_set_keys (operation_class,
"name", "gegl:buffer-source",
"title", _("Buffer Source"),
"categories", "programming:input",
"name", "gegl:buffer-source",
"title", _("Buffer Source"),
"categories", "programming:input",
"description", _("Use an existing in-memory GeglBuffer as image source."),
NULL);

operation_class->no_cache = TRUE;
}

#endif

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