gstreamer/examples/c/gessrc.c

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C
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#include <ges/ges.h>
static void
bus_message_cb (GstBus * bus, GstMessage * message, GMainLoop * mainloop)
{
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_printerr ("Got error message on the bus\n");
g_main_loop_quit (mainloop);
break;
case GST_MESSAGE_EOS:
g_print ("Done\n");
g_main_loop_quit (mainloop);
break;
default:
break;
}
}
static void
source_setup_cb (GstElement * playbin, GstElement * source,
GESTimeline * timeline)
{
g_object_set (source, "timeline", timeline, NULL);
}
int
main (int argc, char **argv)
{
GMainLoop *mainloop = NULL;
GstElement *pipeline = NULL;
GESTimeline *timeline;
GESLayer *layer = NULL;
GstBus *bus = NULL;
guint i, ret = 0;
gchar *uri = NULL;
GstClockTime start = 0;
if (argc < 2) {
g_print ("Usage: %s <list of files>\n", argv[0]);
return -1;
}
gst_init (&argc, &argv);
ges_init ();
timeline = ges_timeline_new_audio_video ();
layer = (GESLayer *) ges_layer_new ();
if (!ges_timeline_add_layer (timeline, layer))
return -1;
/* Build the timeline */
for (i = 1; i < argc; i++) {
GESClip *clip;
uri = g_strdup (argv[i]);
if (!gst_uri_is_valid (uri)) {
g_free (uri);
uri = gst_filename_to_uri (argv[i], NULL);
}
clip = GES_CLIP (ges_uri_clip_new (uri));
if (!clip) {
g_printerr ("Could not create clip for file: %s\n", argv[i]);
g_free (uri);
goto err;
}
g_object_set (clip, "start", start, NULL);
ges_layer_add_clip (layer, clip);
start += ges_timeline_element_get_duration (GES_TIMELINE_ELEMENT (clip));
g_free (uri);
}
/* Use a usual playbin pipeline */
pipeline = gst_element_factory_make ("playbin", NULL);
g_object_set (pipeline, "uri", "ges://", NULL);
g_signal_connect (pipeline, "source-setup", G_CALLBACK (source_setup_cb),
timeline);
mainloop = g_main_loop_new (NULL, FALSE);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_signal_watch (bus);
g_signal_connect (bus, "message", G_CALLBACK (bus_message_cb), mainloop);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
g_main_loop_run (mainloop);
gst_element_set_state (pipeline, GST_STATE_NULL);
done:
gst_clear_object (&pipeline);
if (mainloop)
g_main_loop_unref (mainloop);
return ret;
err:
goto done;
}