gstreamer/tests/examples/test3.c

102 lines
3.2 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <bilboed@bilboed.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <ges/ges.h>
int
main (int argc, gchar ** argv)
{
GESTimelinePipeline *pipeline;
GESTimeline *timeline;
GESTrack *tracka;
GESTimelineLayer *layer;
GList *sources = NULL;
GMainLoop *mainloop;
guint i;
if (argc < 2) {
g_print ("Usage: %s <list of audio files>\n", argv[0]);
return -1;
}
/* Initialize GStreamer (this will parse environment variables and commandline
* arguments. */
gst_init (&argc, &argv);
/* Initialize the GStreamer Editing Services */
ges_init ();
/* Setup of an audio timeline */
/* This is our main GESTimeline */
timeline = ges_timeline_new ();
tracka = ges_track_audio_raw_new ();
/* We are only going to be doing one layer of timeline objects */
layer = (GESTimelineLayer *) ges_simple_timeline_layer_new ();
/* Add the tracks and the layer to the timeline */
if (!ges_timeline_add_layer (timeline, layer))
return -1;
if (!ges_timeline_add_track (timeline, tracka))
return -1;
/* Here we've finished initializing our timeline, we're
* ready to start using it... by solely working with the layer !*/
for (i = 1; i < argc; i++) {
gchar *uri = g_strdup_printf ("file://%s", argv[i]);
GESTimelineFileSource *src = ges_timeline_filesource_new (uri);
g_assert (src);
g_free (uri);
g_object_set (src, "duration", GST_SECOND, NULL);
/* Since we're using a GESSimpleTimelineLayer, objects will be automatically
* appended to the end of the layer */
ges_timeline_layer_add_object (layer, (GESTimelineObject *) src);
sources = g_list_append (sources, src);
}
/* In order to view our timeline, let's grab a convenience pipeline to put
* our timeline in. */
pipeline = ges_timeline_pipeline_new ();
/* Add the timeline to that pipeline */
if (!ges_timeline_pipeline_add_timeline (pipeline, timeline))
return -1;
/* The following is standard usage of a GStreamer pipeline (note how you haven't
* had to care about GStreamer so far ?).
*
* We set the pipeline to playing ... */
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
/* .. and we start a GMainLoop. GES **REQUIRES** a GMainLoop to be running in
* order to function properly ! */
mainloop = g_main_loop_new (NULL, FALSE);
/* Simple code to have the mainloop shutdown after 4s */
g_timeout_add_seconds (argc, (GSourceFunc) g_main_loop_quit, mainloop);
g_main_loop_run (mainloop);
return 0;
}