static void
make_dynamic_link (GstEditorLink * link)
{
GstElement *srce, *sinke;
GstPadTemplate *src = NULL, *sink = NULL;
if (GST_IS_EDITOR_PAD_SOMETIMES (link->srcpad))
src = GST_PAD_TEMPLATE (link->srcpad->object);
if (GST_IS_EDITOR_PAD_SOMETIMES (link->sinkpad))
sink = GST_PAD_TEMPLATE (link->sinkpad->object);
srce =
GST_ELEMENT (GST_EDITOR_ITEM (goo_canvas_item_get_parent (GOO_CANVAS_ITEM
(link->srcpad)))->object);
sinke =
GST_ELEMENT (GST_EDITOR_ITEM (goo_canvas_item_get_parent (GOO_CANVAS_ITEM
(link->sinkpad)))->object);
g_return_if_fail (src || sink);
if (src)
g_signal_connect_after (srce, "pad-added", G_CALLBACK (on_new_pad), link);
if (sink)
g_signal_connect_after (sinke, "pad-added", G_CALLBACK (on_new_pad), link);
g_print ("dynamic link\n");
}
static int
add_templates (gpointer gclass, PyObject * templates)
{
if (PyTuple_Check (templates)) {
gint i, len;
PyGObject *templ;
len = PyTuple_Size (templates);
if (len == 0)
return 0;
for (i = 0; i < len; i++) {
templ = (PyGObject *) PyTuple_GetItem (templates, i);
if (!pygobject_check (templ, &PyGObject_Type)) {
PyObject *repr = PyObject_Repr ((PyObject *) templ);
#if PY_VERSION_HEX < 0x03000000
PyErr_Format (PyExc_TypeError, "expected GObject but got %s",
PyString_AsString (repr));
#else
PyErr_Format (PyExc_TypeError, "expected GObject but got %s",
_PyUnicode_AsString (repr));
#endif
Py_DECREF (repr);
return -1;
} else if (!GST_IS_PAD_TEMPLATE (pygobject_get (templ))) {
gchar *error =
g_strdup_printf
("entries for __gsttemplates__ must be of type GstPadTemplate (%s)",
G_OBJECT_TYPE_NAME (pygobject_get (templ)));
PyErr_SetString (PyExc_TypeError, error);
g_free (error);
return -1;
}
}
for (i = 0; i < len; i++) {
templ = (PyGObject *) PyTuple_GetItem (templates, i);
gst_element_class_add_pad_template (gclass,
GST_PAD_TEMPLATE (templ->obj));
}
return 0;
} else if (!pygobject_check (templates, &PyGObject_Type) ||
GST_IS_PAD_TEMPLATE (pygobject_get (templates)) == FALSE) {
PyErr_SetString (PyExc_TypeError,
"entry for __gsttemplates__ must be of type GstPadTemplate");
return -1;
}
gst_element_class_add_pad_template (gclass,
GST_PAD_TEMPLATE (pygobject_get (templates)));
return 0;
}
static void
gst_pad_template_dispose (GObject * object)
{
GstPadTemplate *templ = GST_PAD_TEMPLATE (object);
g_free (GST_PAD_TEMPLATE_NAME_TEMPLATE (templ));
if (GST_PAD_TEMPLATE_CAPS (templ)) {
gst_caps_unref (GST_PAD_TEMPLATE_CAPS (templ));
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
/* this function is only linked for dynamic links */
static void
on_new_pad (GstElement * element, GstPad * pad, GstEditorLink * link)
{
GstPadTemplate *src = NULL, *sink = NULL;
if (GST_IS_EDITOR_PAD_SOMETIMES (link->srcpad))
src = GST_PAD_TEMPLATE (link->srcpad->object);
if (GST_IS_EDITOR_PAD_SOMETIMES (link->sinkpad))
sink = GST_PAD_TEMPLATE (link->sinkpad->object);
g_message ("new pad");
if (pad->padtemplate) {
g_message ("from a template");
/* can't do pointer comparison -- some templates appear to be from the
elementfactories, some from template factories... have to compare
names */
if (src &&
g_ascii_strcasecmp (
pad->padtemplate->name_template, src->name_template) == 0)
g_object_set (G_OBJECT (GOO_CANVAS_ITEM (link)), "src-pad",
gst_editor_item_get (GST_OBJECT (pad)), NULL);
else if (sink &&
g_ascii_strcasecmp (
pad->padtemplate->name_template, sink->name_template) == 0)
g_object_set (G_OBJECT (GOO_CANVAS_ITEM (link)), "sink-pad",
gst_editor_item_get (GST_OBJECT (pad)), NULL);
else
return;
g_message ("we made it, now let's link");
/*gst_element_set_state ((GstElement *)
gst_element_get_managing_bin (element), GST_STATE_PAUSED); */
gst_editor_link_link (link);
/*gst_element_set_state ((GstElement *)
gst_element_get_managing_bin (element), GST_STATE_PLAYING); */
}
}
static int
add_templates (gpointer gclass, PyObject * templates)
{
if (PyTuple_Check (templates)) {
gint i, len;
PyGObject *templ;
len = PyTuple_Size (templates);
if (len == 0)
return 0;
for (i = 0; i < len; i++) {
templ = (PyGObject *) PyTuple_GetItem (templates, i);
if (GST_IS_PAD_TEMPLATE (pygobject_get (templ)) == FALSE) {
PyErr_SetString (PyExc_TypeError,
"entries for __gsttemplates__ must be of type GstPadTemplate");
return -1;
}
}
for (i = 0; i < len; i++) {
templ = (PyGObject *) PyTuple_GetItem (templates, i);
gst_element_class_add_pad_template (gclass,
GST_PAD_TEMPLATE (templ->obj));
}
return 0;
}
if (GST_IS_PAD_TEMPLATE (pygobject_get (templates)) == FALSE) {
PyErr_SetString (PyExc_TypeError,
"entry for __gsttemplates__ must be of type GstPadTemplate");
return -1;
}
gst_element_class_add_pad_template (gclass,
GST_PAD_TEMPLATE (pygobject_get (templates)));
return 0;
}
static gboolean
has_sometimes_template (GstElement * element)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GList *l;
for (l = klass->padtemplates; l != NULL; l = l->next) {
if (GST_PAD_TEMPLATE (l->data)->presence == GST_PAD_SOMETIMES)
return TRUE;
}
return FALSE;
}
gboolean
gst_editor_link_link (GstEditorLink * link)
{
GObject * src, *sink;
GstPad * srcpad = NULL, * sinkpad = NULL;
GooCanvasItem * item;
GooCanvasLineDash * dash;
g_return_val_if_fail (GST_IS_EDITOR_LINK (link), FALSE);
if (!link->srcpad || !link->sinkpad)
goto error;
src = (GObject *)GST_EDITOR_ITEM (link->srcpad)->object;
sink = (GObject *)GST_EDITOR_ITEM (link->sinkpad)->object;
if (!GST_EDITOR_PAD (link->srcpad)->istemplate) {
if (!GST_EDITOR_PAD (link->sinkpad)->istemplate) {
if (GST_PAD_PEER (src) || GST_PAD_PEER (sink)) {
/*if (GST_PAD_PEER (src) != (GstPad *) sink)
{
g_warning ("The src pad is linked, but not to the sink pad");
goto error;
}
if (GST_PAD_PEER (sink) != (GstPad *) src)
{
g_warning ("The sink pad is linked, but not to the src pad");
goto error;
} */
srcpad = GST_PAD (src);
sinkpad = GST_PAD (sink);
goto linked;
/* yay goto */
}
}
else if (GST_PAD_PEER (src)) {
/* the to pad is a template */
g_warning ("The src pad is linked, but not to the sink pad");
goto error;
}
}
else if (!GST_EDITOR_PAD (link->sinkpad)->istemplate && GST_PAD_PEER (sink)) {
/* from pad is a template */
g_warning ("The sink pad is linked, but not to the src pad");
goto error;
}
if (link->ghost) {
g_object_set (
G_OBJECT (GOO_CANVAS_ITEM (link)), "fill-color", "grey70", NULL);
goto linked;
}
else if (GST_IS_EDITOR_PAD_SOMETIMES (link->srcpad) ||
GST_IS_EDITOR_PAD_SOMETIMES (link->sinkpad)) {
make_dynamic_link (link);
g_object_set (
G_OBJECT (GOO_CANVAS_ITEM (link)), "fill-color", "grey50", NULL);
goto linked;
}
else {
if (!GST_EDITOR_PAD (link->srcpad)->istemplate) {
srcpad = GST_PAD (src);
}
else if (GST_IS_EDITOR_PAD_REQUEST (link->srcpad)) {
srcpad = gst_element_get_request_pad (
(GstElement *)GST_EDITOR_ITEM (
goo_canvas_item_get_parent (GOO_CANVAS_ITEM (link->srcpad)))
->object,
GST_PAD_TEMPLATE (src)->name_template);
/* the new_pad signal will cause a new pad to made automagically in the
element */
g_object_set (G_OBJECT (GOO_CANVAS_ITEM (link)), "src-pad",
gst_editor_item_get ((GstObject *)srcpad), NULL);
}
else {
goto error;
}
if (!srcpad)
goto error;
if (!GST_EDITOR_PAD (link->sinkpad)->istemplate) {
sinkpad = GST_PAD (sink);
} else if (GST_IS_EDITOR_PAD_REQUEST (link->sinkpad)) {
sinkpad = gst_element_get_request_pad (
(GstElement *)GST_EDITOR_ITEM (
goo_canvas_item_get_parent (GOO_CANVAS_ITEM (link->sinkpad)))
->object,
GST_PAD_TEMPLATE (sink)->name_template);
g_object_set (G_OBJECT (GOO_CANVAS_ITEM (link)), "sink-pad",
gst_editor_item_get ((GstObject *)sinkpad), NULL);
} else {
goto error;
}
if (!sinkpad)
goto error;
if (gst_pad_link (srcpad, sinkpad) == GST_PAD_LINK_OK) {
GstEditorBin * srcbin, *sinkbin;
g_object_set (
G_OBJECT (GOO_CANVAS_ITEM (link)), "fill-color", "black", NULL);
linked:
srcbin = sinkbin = NULL;
dash = goo_canvas_line_dash_new (0, NULL);
g_object_set (G_OBJECT (GOO_CANVAS_ITEM (link)), "line-dash", dash, NULL);
goo_canvas_line_dash_unref (dash);
g_signal_connect (link->srcpad, "position-changed",
G_CALLBACK (on_editor_pad_position_changed), G_OBJECT (link));
g_signal_connect (link->sinkpad, "position-changed",
G_CALLBACK (on_editor_pad_position_changed), G_OBJECT (link));
/* don't connect a signal on a ghost or dynamic link */
g_print (
"adding unlinked signal for src: %p and sink %p", srcpad, sinkpad);
if (srcpad && sinkpad) {
GST_CAT_DEBUG (gste_debug_cat,
"link pad signal (%s:%s from %s:%s) with link %p",
GST_DEBUG_PAD_NAME (srcpad), GST_DEBUG_PAD_NAME (sinkpad), link);
g_signal_connect (srcpad, "unlinked", G_CALLBACK (on_pad_unlink), link);
g_signal_connect (
sinkpad, "unlinked", G_CALLBACK (on_pad_unlink), link);
}
item = goo_canvas_item_get_parent (
goo_canvas_item_get_parent (GOO_CANVAS_ITEM (link->srcpad)));
if (GST_IS_EDITOR_BIN (item))
srcbin = GST_EDITOR_BIN (item);
item = goo_canvas_item_get_parent (
goo_canvas_item_get_parent (GOO_CANVAS_ITEM (link->sinkpad)));
if (GST_IS_EDITOR_BIN (item))
sinkbin = GST_EDITOR_BIN (item);
if (sinkbin)
sinkbin->links = g_list_prepend (sinkbin->links, link);
if (srcbin && sinkbin != srcbin)
srcbin->links = g_list_prepend (srcbin->links, link);
return TRUE;
}
}
error:
g_message ("could not link");
if (link->srcpad)
GST_EDITOR_PAD (link->srcpad)->link = NULL;
if (link->sinkpad)
GST_EDITOR_PAD (link->sinkpad)->link = NULL;
return FALSE;
}
static gboolean
connect_element (InsanityTest * test, GstElement * demux)
{
GList *pads;
gboolean res = TRUE;
gboolean dynamic = FALSE;
GList *to_connect = NULL;
/* 1. Loop over pad templates, grabbing existing pads along the way */
for (pads = GST_ELEMENT_GET_CLASS (demux)->padtemplates; pads;
pads = g_list_next (pads)) {
GstPadTemplate *templ = GST_PAD_TEMPLATE (pads->data);
const gchar *templ_name;
/* we are only interested in source pads */
if (GST_PAD_TEMPLATE_DIRECTION (templ) != GST_PAD_SRC)
continue;
templ_name = GST_PAD_TEMPLATE_NAME_TEMPLATE (templ);
/* figure out what kind of pad this is */
switch (GST_PAD_TEMPLATE_PRESENCE (templ)) {
case GST_PAD_ALWAYS:
{
GstPad *pad = gst_element_get_static_pad (demux, templ_name);
/* We concider the demuxer is not broken, and thus always
* pads are always here */
to_connect = g_list_prepend (to_connect, pad);
break;
}
case GST_PAD_SOMETIMES:
{
/* try to get the pad to see if it is already created or
* not */
GstPad *pad = gst_element_get_static_pad (demux, templ_name);
if (pad) {
/* the pad is created, we need to try to link to it */
to_connect = g_list_prepend (to_connect, pad);
} else {
/* we have an element that will create dynamic pads */
dynamic = TRUE;
}
break;
}
case GST_PAD_REQUEST:
/* ignore request pads */
break;
}
}
/* 2. if there are more potential pads, connect to signal */
if (dynamic) {
g_signal_connect (glob_demuxer, "pad-added", G_CALLBACK (pad_added_cb),
test);
}
/* 3. for every available pad, check if we can connect it */
for (pads = to_connect; pads; pads = g_list_next (pads)) {
GstPad *pad = GST_PAD_CAST (pads->data);
pad_added_cb (demux, pad, test);
gst_object_unref (pad);
}
g_list_free (to_connect);
return res;
}