mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-27 18:50:48 +00:00
e1fcd42a19
+ Add some markdown files to link between languages + Add a simple 'play timeline with one clip" example in C and python
98 lines
3 KiB
C
98 lines
3 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <ges/ges.h>
|
|
|
|
int
|
|
main (int argc, gchar ** argv)
|
|
{
|
|
GESPipeline *pipeline;
|
|
GESTimeline *timeline;
|
|
GESTrack *tracka;
|
|
GESLayer *layer;
|
|
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 (ges_audio_track_new ());
|
|
|
|
/* We are only going to be doing one layer of clips */
|
|
layer = ges_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 = gst_filename_to_uri (argv[i], NULL);
|
|
GESUriClip *src = ges_uri_clip_new (uri);
|
|
|
|
g_assert (src);
|
|
g_free (uri);
|
|
|
|
g_object_set (src, "start", ges_layer_get_duration (layer),
|
|
"duration", GST_SECOND, NULL);
|
|
ges_layer_add_clip (layer, (GESClip *) src);
|
|
}
|
|
|
|
/* In order to view our timeline, let's grab a convenience pipeline to put
|
|
* our timeline in. */
|
|
pipeline = ges_pipeline_new ();
|
|
|
|
/* Add the timeline to that pipeline */
|
|
if (!ges_pipeline_set_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 - 1, (GSourceFunc) g_main_loop_quit, mainloop);
|
|
g_main_loop_run (mainloop);
|
|
|
|
return 0;
|
|
}
|