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179 lines
5.7 KiB
C
179 lines
5.7 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <bilboed@bilboed.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <ges/ges.h>
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#include <gst/pbutils/encoding-profile.h>
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GstEncodingProfile *make_encoding_profile (gchar * audio, gchar * container);
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/* This example will take a series of files and create a audio-only timeline
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* containing the first second of each file and render it to the output uri
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* using ogg/vorbis */
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/* make_encoding_profile
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* simple method creating an encoding profile. This is here in
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* order not to clutter the main function. */
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GstEncodingProfile *
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make_encoding_profile (gchar * audio, gchar * container)
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{
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GstEncodingContainerProfile *profile;
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GstEncodingProfile *stream;
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GstCaps *caps;
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caps = gst_caps_from_string (container);
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profile =
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gst_encoding_container_profile_new ((gchar *) "ges-test4", NULL, caps,
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NULL);
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gst_caps_unref (caps);
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caps = gst_caps_from_string (audio);
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stream = (GstEncodingProfile *)
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gst_encoding_audio_profile_new (caps, NULL, NULL, 0);
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gst_encoding_container_profile_add_profile (profile, stream);
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gst_caps_unref (caps);
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return (GstEncodingProfile *) profile;
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}
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int
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main (int argc, gchar ** argv)
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{
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GESPipeline *pipeline;
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GESTimeline *timeline;
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GESTrack *tracka;
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GESLayer *layer;
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GMainLoop *mainloop;
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GstEncodingProfile *profile;
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gchar *container = (gchar *) "application/ogg";
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gchar *audio = (gchar *) "audio/x-vorbis";
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gchar *output_uri;
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guint i;
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GError *err = NULL;
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GOptionEntry options[] = {
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{"format", 'f', 0, G_OPTION_ARG_STRING, &container,
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"Container format", "<GstCaps>"},
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{"aformat", 'a', 0, G_OPTION_ARG_STRING, &audio,
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"Audio format", "<GstCaps>"},
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{NULL}
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};
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GOptionContext *ctx;
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ctx = g_option_context_new ("- renders a sequence of audio files.");
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g_option_context_add_main_entries (ctx, options, NULL);
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g_option_context_add_group (ctx, gst_init_get_option_group ());
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if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
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gst_printerr ("Error initializing: %s\n", err->message);
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g_option_context_free (ctx);
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g_clear_error (&err);
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return -1;
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}
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g_option_context_free (ctx);
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if (argc < 3) {
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gst_print ("Usage: %s <output uri> <list of audio files>\n", argv[0]);
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return -1;
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}
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/* Initialize GStreamer (this will parse environment variables and commandline
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* arguments. */
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gst_init (&argc, &argv);
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/* Initialize the GStreamer Editing Services */
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ges_init ();
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/* Setup of an audio timeline */
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/* This is our main GESTimeline */
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timeline = ges_timeline_new ();
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tracka = GES_TRACK (ges_audio_track_new ());
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/* We are only going to be doing one layer of clips */
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layer = ges_layer_new ();
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/* Add the tracks and the layer to the timeline */
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if (!ges_timeline_add_layer (timeline, layer))
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return -1;
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if (!ges_timeline_add_track (timeline, tracka))
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return -1;
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/* Here we've finished initializing our timeline, we're
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* ready to start using it... by solely working with the layer ! */
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for (i = 2; i < argc; i++) {
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gchar *uri = gst_filename_to_uri (argv[i], NULL);
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GESUriClip *src = ges_uri_clip_new (uri);
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g_assert (src);
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g_free (uri);
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g_object_set (src, "start", ges_layer_get_duration (layer),
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"duration", GST_SECOND, NULL);
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/* Since we're using a GESSimpleLayer, objects will be automatically
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* appended to the end of the layer */
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ges_layer_add_clip (layer, (GESClip *) src);
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}
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/* In order to view our timeline, let's grab a convenience pipeline to put
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* our timeline in. */
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pipeline = ges_pipeline_new ();
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/* Add the timeline to that pipeline */
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if (!ges_pipeline_set_timeline (pipeline, timeline))
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return -1;
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/* RENDER SETTINGS ! */
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/* We set our output URI and rendering setting on the pipeline */
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if (gst_uri_is_valid (argv[1])) {
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output_uri = g_strdup (argv[1]);
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} else if (g_file_test (argv[1], G_FILE_TEST_EXISTS)) {
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output_uri = gst_filename_to_uri (argv[1], NULL);
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} else {
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gst_printerr ("Unrecognised command line argument '%s'.\n"
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"Please pass an URI or file as argument!\n", argv[1]);
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return -1;
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}
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profile = make_encoding_profile (audio, container);
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if (!ges_pipeline_set_render_settings (pipeline, output_uri, profile))
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return -1;
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/* We want the pipeline to render (without any preview) */
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if (!ges_pipeline_set_mode (pipeline, GES_PIPELINE_MODE_SMART_RENDER))
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return -1;
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/* The following is standard usage of a GStreamer pipeline (note how you haven't
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* had to care about GStreamer so far ?).
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*
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* We set the pipeline to playing ... */
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
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/* ... and we start a GMainLoop. GES **REQUIRES** a GMainLoop to be running in
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* order to function properly ! */
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mainloop = g_main_loop_new (NULL, FALSE);
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/* Simple code to have the mainloop shutdown after 4s */
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/* FIXME : We should wait for EOS ! */
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g_timeout_add_seconds (argc - 1, (GSourceFunc) g_main_loop_quit, mainloop);
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g_main_loop_run (mainloop);
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return 0;
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}
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