mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 18:21:04 +00:00
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
|
#include <gst/gst.h>
|
||
|
|
|
||
|
|
/* playbin2 flags */
|
||
|
|
typedef enum {
|
||
|
|
GST_PLAY_FLAG_VIS = (1 << 3) /* Enable rendering of visualizations when there is no video stream. */
|
||
|
|
} GstPlayFlags;
|
||
|
|
|
||
|
|
/* Return TRUE if this is a Visualization element */
|
||
|
|
static gboolean filter_vis_features (GstPluginFeature *feature, gpointer data) {
|
||
|
|
GstElementFactory *factory;
|
||
|
|
|
||
|
|
if (!GST_IS_ELEMENT_FACTORY (feature))
|
||
|
|
return FALSE;
|
||
|
|
factory = GST_ELEMENT_FACTORY (feature);
|
||
|
|
if (!g_strrstr (gst_element_factory_get_klass (factory), "Visualization"))
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char *argv[]) {
|
||
|
|
GstElement *pipeline, *vis_plugin;
|
||
|
|
GstBus *bus;
|
||
|
|
GstMessage *msg;
|
||
|
|
GList *list, *walk;
|
||
|
|
GstElementFactory *selected_factory = NULL;
|
||
|
|
guint flags;
|
||
|
|
|
||
|
|
/* Initialize GStreamer */
|
||
|
|
gst_init (&argc, &argv);
|
||
|
|
|
||
|
|
/* Get a list of all visualization plugins */
|
||
|
|
list = gst_registry_feature_filter (gst_registry_get_default (), filter_vis_features, FALSE, NULL);
|
||
|
|
|
||
|
|
/* Print their names */
|
||
|
|
g_print("Available visualization plugins:\n");
|
||
|
|
for (walk = list; walk != NULL; walk = g_list_next (walk)) {
|
||
|
|
const gchar *name;
|
||
|
|
GstElementFactory *factory;
|
||
|
|
|
||
|
|
factory = GST_ELEMENT_FACTORY (walk->data);
|
||
|
|
name = gst_element_factory_get_longname (factory);
|
||
|
|
g_print(" %s\n", name);
|
||
|
|
|
||
|
|
if (selected_factory == NULL || g_str_has_prefix (name, "GOOM")) {
|
||
|
|
selected_factory = factory;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Don't use the factory if it's still empty */
|
||
|
|
/* e.g. no visualization plugins found */
|
||
|
|
if (!selected_factory) {
|
||
|
|
g_print ("No visualization plugins found!\n");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* We have now selected a factory for the visualization element */
|
||
|
|
g_print ("Selected '%s'\n", gst_element_factory_get_longname (selected_factory));
|
||
|
|
vis_plugin = gst_element_factory_create (selected_factory, NULL);
|
||
|
|
if (!vis_plugin)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
/* Build the pipeline */
|
||
|
|
pipeline = gst_parse_launch ("playbin2 uri=http://radio.hbr1.com:19800/ambient.ogg", NULL);
|
||
|
|
|
||
|
|
/* Set the visualization flag */
|
||
|
|
g_object_get (pipeline, "flags", &flags, NULL);
|
||
|
|
flags |= GST_PLAY_FLAG_VIS;
|
||
|
|
g_object_set (pipeline, "flags", flags, NULL);
|
||
|
|
|
||
|
|
/* set vis plugin for playbin2 */
|
||
|
|
g_object_set (pipeline, "vis-plugin", vis_plugin, NULL);
|
||
|
|
|
||
|
|
/* Start playing */
|
||
|
|
gst_element_set_state (pipeline, GST_STATE_PLAYING);
|
||
|
|
|
||
|
|
/* Wait until error or EOS */
|
||
|
|
bus = gst_element_get_bus (pipeline);
|
||
|
|
msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
|
||
|
|
|
||
|
|
/* Free resources */
|
||
|
|
if (msg != NULL)
|
||
|
|
gst_message_unref (msg);
|
||
|
|
gst_plugin_feature_list_free (list);
|
||
|
|
gst_object_unref (bus);
|
||
|
|
gst_element_set_state (pipeline, GST_STATE_NULL);
|
||
|
|
gst_object_unref (pipeline);
|
||
|
|
return 0;
|
||
|
|
}
|