static GstPad *
gst_gl_mixer_bin_request_new_pad (GstElement * element, GstPadTemplate * templ,
const gchar * req_name, const GstCaps * caps)
{
GstGLMixerBin *self = GST_GL_MIXER_BIN (element);
GstPadTemplate *mixer_templ;
struct input_chain *chain;
GstPad *mixer_pad;
chain = g_new0 (struct input_chain, 1);
mixer_templ = _find_element_pad_template (self->mixer,
GST_PAD_TEMPLATE_DIRECTION (templ), GST_PAD_TEMPLATE_PRESENCE (templ));
g_return_val_if_fail (mixer_templ, NULL);
mixer_pad =
gst_element_request_pad (self->mixer, mixer_templ, req_name, NULL);
g_return_val_if_fail (mixer_pad, NULL);
if (!_create_input_chain (self, chain, mixer_pad)) {
gst_element_release_request_pad (self->mixer, mixer_pad);
_free_input_chain (chain);
return NULL;
}
GST_OBJECT_LOCK (element);
self->priv->input_chains = g_list_prepend (self->priv->input_chains, chain);
GST_OBJECT_UNLOCK (element);
gst_child_proxy_child_added (GST_CHILD_PROXY (self),
G_OBJECT (chain->ghost_pad), GST_OBJECT_NAME (chain->ghost_pad));
return GST_PAD (chain->ghost_pad);
}
static void
gst_gl_mixer_bin_release_pad (GstElement * element, GstPad * pad)
{
GstGLMixerBin *self = GST_GL_MIXER_BIN (element);
GList *l = self->priv->input_chains;
gboolean released = FALSE;
GST_OBJECT_LOCK (element);
while (l) {
struct input_chain *chain = l->data;
if (GST_PAD (chain->ghost_pad) == pad) {
self->priv->input_chains =
g_list_delete_link (self->priv->input_chains, l);
GST_OBJECT_UNLOCK (element);
_free_input_chain (chain);
gst_element_remove_pad (element, pad);
released = TRUE;
break;
}
l = l->next;
}
if (!released)
GST_OBJECT_UNLOCK (element);
}
static void
gst_gl_mixer_bin_release_pad (GstElement * element, GstPad * pad)
{
GstGLMixerBin *self = GST_GL_MIXER_BIN (element);
GList *l = self->priv->input_chains;
GST_OBJECT_LOCK (element);
while (l) {
struct input_chain *chain = l->data;
if (chain->mixer_pad == pad) {
_free_input_chain (chain);
self->priv->input_chains =
g_list_remove_link (self->priv->input_chains, l);
break;
}
l = l->next;
}
GST_OBJECT_UNLOCK (element);
gst_element_remove_pad (element, pad);
}