mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-22 17:51:16 +00:00
109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
#include <glib.h>
|
|
#include <gst/gst.h>
|
|
|
|
void added_child(GstObject *object,GstObject *child) {
|
|
g_print("added_child(): added child '%s' to '%s'\n",
|
|
gst_object_get_name(child),
|
|
gst_object_get_name(object));
|
|
}
|
|
|
|
void added_parent(GstObject *object,GstObject *parent) {
|
|
g_print("added_parent(): object '%s' has new parent '%s'\n",
|
|
gst_object_get_name(object),
|
|
gst_object_get_name(parent));
|
|
}
|
|
|
|
void list_pads(GstElement *element) {
|
|
GList *padlist;
|
|
|
|
padlist = gst_element_get_pad_list(element);
|
|
if (padlist == NULL)
|
|
g_print("%s has no pads...\n",gst_object_get_name(element));
|
|
else {
|
|
while (padlist) {
|
|
GstPad *pad = GST_PAD(padlist->data);
|
|
if (gst_pad_get_ghost_parent(pad) == GST_OBJECT(element))
|
|
g_print("'%s' had %s ghost pad '%s'\n",gst_object_get_name(element),
|
|
(gst_pad_get_direction(pad) == GST_PAD_SRC) ? "SRC" : "SINK",
|
|
gst_pad_get_name(pad));
|
|
else
|
|
g_print("'%s' had %s pad '%s'\n",gst_object_get_name(element),
|
|
(gst_pad_get_direction(pad) == GST_PAD_SRC) ? "SRC" : "SINK",
|
|
gst_pad_get_name(pad));
|
|
padlist = g_list_next(padlist);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc,char *argv[]) {
|
|
GstElement *bin, *src, *binf, *filter1, *filter2, *sink;
|
|
GList *padlist;
|
|
|
|
gtk_init(&argc,&argv);
|
|
|
|
bin = gst_bin_new("bin");
|
|
|
|
src = gst_disksrc_new("fakesrc");
|
|
gst_disksrc_set_filename(src,"demo.mp3");
|
|
list_pads(src);
|
|
|
|
binf = gst_bin_new("binf");
|
|
|
|
filter1 = gst_fakefilter_new("filter1");
|
|
list_pads(filter1);
|
|
|
|
filter2 = gst_fakefilter_new("filter2");
|
|
list_pads(filter2);
|
|
|
|
sink = gst_fakesink_new("fakesink");
|
|
list_pads(sink);
|
|
|
|
gtk_signal_connect(GTK_OBJECT(bin),"object_added",
|
|
GTK_SIGNAL_FUNC(added_child),NULL);
|
|
gtk_signal_connect(GTK_OBJECT(binf),"object_added",
|
|
GTK_SIGNAL_FUNC(added_child),NULL);
|
|
|
|
gtk_signal_connect(GTK_OBJECT(binf),"parent_set",
|
|
GTK_SIGNAL_FUNC(added_parent),NULL);
|
|
gtk_signal_connect(GTK_OBJECT(src),"parent_set",
|
|
GTK_SIGNAL_FUNC(added_parent),NULL);
|
|
gtk_signal_connect(GTK_OBJECT(filter1),"parent_set",
|
|
GTK_SIGNAL_FUNC(added_parent),NULL);
|
|
gtk_signal_connect(GTK_OBJECT(filter2),"parent_set",
|
|
GTK_SIGNAL_FUNC(added_parent),NULL);
|
|
gtk_signal_connect(GTK_OBJECT(sink),"parent_set",
|
|
GTK_SIGNAL_FUNC(added_parent),NULL);
|
|
|
|
/* add filter1 to the subbin */
|
|
gst_bin_add(GST_BIN(binf),GST_ELEMENT(filter1));
|
|
gst_bin_add(GST_BIN(binf),GST_ELEMENT(filter2));
|
|
/* connect the two together */
|
|
gst_pad_connect(gst_element_get_pad(filter1,"src"),
|
|
gst_element_get_pad(filter2,"sink"));
|
|
/* export the pads */
|
|
gst_element_add_ghost_pad(binf,gst_element_get_pad(filter1,"sink"));
|
|
gst_element_add_ghost_pad(binf,gst_element_get_pad(filter2,"src"));
|
|
list_pads(binf);
|
|
|
|
/* add objects to the main pipeline */
|
|
gst_bin_add(GST_BIN(bin),GST_OBJECT(src));
|
|
gst_bin_add(GST_BIN(bin),GST_OBJECT(binf));
|
|
gst_bin_add(GST_BIN(bin),GST_OBJECT(sink));
|
|
|
|
/* connect src to binf */
|
|
gst_pad_connect(gst_element_get_pad(src,"src"),
|
|
gst_element_get_pad(binf,"sink"));
|
|
/* connect binf to sink */
|
|
gst_pad_connect(gst_element_get_pad(binf,"src"),
|
|
gst_element_get_pad(sink,"sink"));
|
|
|
|
gst_disksrc_push(GST_SRC(src));
|
|
|
|
gst_object_destroy(GST_OBJECT(src));
|
|
gst_object_destroy(GST_OBJECT(filter1));
|
|
gst_object_destroy(GST_OBJECT(filter2));
|
|
gst_object_destroy(GST_OBJECT(binf));
|
|
gst_object_destroy(GST_OBJECT(sink));
|
|
gst_object_destroy(GST_OBJECT(bin));
|
|
}
|
|
|