gstreamer/tests/examples/test4.c

142 lines
4.5 KiB
C
Raw Normal View History

/* 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>
#include <gst/profile/gstprofile.h>
/* This example will take a series of files and create a audio-only timeline
* containing the first second of each file and render it to the output uri
* using ogg/vorbis */
/* make_ogg_vorbis_profile:
* simple method creating a ogg/vorbis encoding profile. This is here in
* order not to clutter the main function. */
GstEncodingProfile *
make_ogg_vorbis_profile (void)
{
GstEncodingProfile *profile;
GstStreamEncodingProfile *audiostream;
profile = gst_encoding_profile_new ("ges-test4",
gst_caps_new_simple ("application/ogg", NULL), NULL, FALSE);
audiostream = gst_stream_encoding_profile_new (GST_ENCODING_PROFILE_AUDIO,
gst_caps_new_simple ("audio/x-vorbis", NULL), NULL, NULL, 1);
gst_encoding_profile_add_stream (profile, audiostream);
return profile;
}
int
main (int argc, gchar ** argv)
{
GESTimelinePipeline *pipeline;
GESTimeline *timeline;
GESTrack *tracka;
GESTimelineLayer *layer;
GList *sources = NULL;
GMainLoop *mainloop;
GstEncodingProfile *profile;
gchar *output_uri;
guint i;
if (argc < 3) {
g_print ("Usage: %s <output uri> <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 = 2; 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;
/* RENDER SETTINGS ! */
/* We set our output URI and rendering setting on the pipeline */
output_uri = argv[1];
profile = make_ogg_vorbis_profile ();
if (!ges_timeline_pipeline_set_render_settings (pipeline, output_uri,
profile))
return -1;
/* We want the pipeline to render (without any preview) */
if (!ges_timeline_pipeline_set_mode (pipeline, TIMELINE_MODE_RENDER))
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 */
/* FIXME : We should wait for EOS ! */
g_timeout_add_seconds (argc, (GSourceFunc) g_main_loop_quit, mainloop);
g_main_loop_run (mainloop);
return 0;
}