examples: New playlist examples

Allows giving lists of file/start/duration triplets and testing the
various timeline-pipeline modes (preview, render, smart-render)

diff --git a/tests/examples/Makefile.am b/tests/examples/Makefile.am
index f0c6b3c..d5bac25 100644 (file)
--- a/tests/examples/Makefile.am
+++ b/tests/examples/Makefile.am
@@ -1,4 +1,5 @@
 noinst_PROGRAMS =      \
+       playlist        \
        simple1         \
        test1           \
        test2           \

diff --git a/tests/examples/playlist.c b/tests/examples/playlist.c
new file mode 100644 (file)
index 0000000..b95b150
--- /dev/null
+++ b/tests/examples/playlist.c
@@ -0,0 +1,210 @@
+/* GStreamer Editing Services
+ * Copyright (C) 2010 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <glib.h>
+#include <ges/ges.h>
+#include <gst/profile/gstprofile.h>
+
+static GstEncodingProfile *
+make_encoding_profile (gchar * audio, gchar * video, gchar * container)
+{
+  GstEncodingProfile *profile;
+  GstStreamEncodingProfile *stream;
+
+  profile = gst_encoding_profile_new ("ges-test4",
+      gst_caps_new_simple (container, NULL), NULL, FALSE);
+  stream = gst_stream_encoding_profile_new (GST_ENCODING_PROFILE_AUDIO,
+      gst_caps_from_string (audio), NULL, NULL, 0);
+  gst_encoding_profile_add_stream (profile, stream);
+  stream = gst_stream_encoding_profile_new (GST_ENCODING_PROFILE_VIDEO,
+      gst_caps_from_string (video), NULL, NULL, 0);
+  gst_encoding_profile_add_stream (profile, stream);
+  return profile;
+}
+
+static GESTimelinePipeline *
+create_timeline (int nbargs, gchar ** argv)
+{
+  GESTimelinePipeline *pipeline;
+  GESTimelineLayer *layer;
+  GESTrack *tracka, *trackv;
+  GESTimeline *timeline;
+  guint i;
+
+  timeline = ges_timeline_new ();
+
+  tracka = ges_track_audio_raw_new ();
+  trackv = ges_track_video_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) ||
+      !ges_timeline_add_track (timeline, tracka) ||
+      !ges_timeline_add_track (timeline, trackv))
+    return NULL;
+
+  /* Here we've finished initializing our timeline, we're 
+   * ready to start using it... by solely working with the layer !*/
+
+  for (i = 0; i < nbargs / 3; i++) {
+    gchar *uri = g_strdup_printf ("file://%s", argv[i * 3]);
+    GESTimelineFileSource *src = ges_timeline_filesource_new (uri);
+
+    g_assert (src);
+    g_free (uri);
+
+    g_object_set (src,
+        "in-point", atoi (argv[i * 3 + 1]) * GST_SECOND,
+        "duration", atoi (argv[i * 3 + 2]) * 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);
+  }
+
+  /* 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 NULL;
+
+  return pipeline;
+}
+
+static void
+bus_message_cb (GstBus * bus, GstMessage * message, GMainLoop * mainloop)
+{
+  switch (GST_MESSAGE_TYPE (message)) {
+    case GST_MESSAGE_ERROR:
+      g_print ("ERROR\n");
+      g_main_loop_quit (mainloop);
+      break;
+    case GST_MESSAGE_EOS:
+      g_print ("Done\n");
+      g_main_loop_quit (mainloop);
+      break;
+    default:
+      break;
+  }
+}
+
+int
+main (int argc, gchar ** argv)
+{
+  GError *err = NULL;
+  gchar *outputuri = NULL;
+  gchar *container = "application/ogg";
+  gchar *audio = "audio/x-vorbis";
+  gchar *video = "video/x-theora";
+  static gboolean render = FALSE;
+  static gboolean smartrender = FALSE;
+  GOptionEntry options[] = {
+    {"render", 'r', 0, G_OPTION_ARG_NONE, &render,
+        "Render to outputuri", NULL},
+    {"smartrender", 's', 0, G_OPTION_ARG_NONE, &smartrender,
+        "Render to outputuri, and avoid decoding/reencoding", NULL},
+    {"outputuri", 'o', 0, G_OPTION_ARG_STRING, &outputuri,
+        "URI to encode to", "URI (<protocol>://<location>)"},
+    {"format", 'f', 0, G_OPTION_ARG_STRING, &container,
+        "Container format", "<GstCaps>"},
+    {"vformat", 'v', 0, G_OPTION_ARG_STRING, &video,
+        "Video format", "<GstCaps>"},
+    {"aformat", 'a', 0, G_OPTION_ARG_STRING, &audio,
+        "Audio format", "<GstCaps>"},
+    {NULL}
+  };
+  GOptionContext *ctx;
+  GESTimelinePipeline *pipeline;
+  GMainLoop *mainloop;
+  GstBus *bus;
+
+  if (!g_thread_supported ())
+    g_thread_init (NULL);
+
+  ctx = g_option_context_new ("- plays/render a list of files");
+  g_option_context_set_summary (ctx,
+      "If not specified, this example will playback the files\n" "\n"
+      "The files should be layed out in triplets of:\n" " * filename\n"
+      " * inpoint (in seconds)\n" " * duration (in seconds)");
+  g_option_context_add_main_entries (ctx, options, NULL);
+  g_option_context_add_group (ctx, gst_init_get_option_group ());
+
+  if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
+    g_print ("Error initializing: %s\n", err->message);
+    g_option_context_free (ctx);
+    exit (1);
+  }
+
+  if ((argc < 4) || (outputuri && (!render && !smartrender))) {
+    g_print ("outputuri:%s, render:%d, smartrender:%d, argc:%d\n",
+        outputuri, render, smartrender, argc);
+    g_print ("%s", g_option_context_get_help (ctx, TRUE, NULL));
+    g_option_context_free (ctx);
+    exit (-1);
+  }
+
+  g_option_context_free (ctx);
+  /* Initialize the GStreamer Editing Services */
+  ges_init ();
+
+  /* Create the pipeline */
+  pipeline = create_timeline (argc - 1, argv + 1);
+  if (!pipeline)
+    exit (-1);
+
+  /* Setup profile/encoding if needed */
+  if (render || smartrender) {
+    GstEncodingProfile *prof;
+    prof = make_encoding_profile (audio, video, container);
+
+    if (!prof ||
+        !ges_timeline_pipeline_set_render_settings (pipeline, outputuri, prof)
+        || !ges_timeline_pipeline_set_mode (pipeline,
+            smartrender ? TIMELINE_MODE_SMART_RENDER : TIMELINE_MODE_RENDER))
+      exit (-1);
+  } else {
+    ges_timeline_pipeline_set_mode (pipeline, TIMELINE_MODE_PREVIEW);
+  }
+
+  /* Play the pipeline */
+  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);
+
+  if (gst_element_set_state (GST_ELEMENT (pipeline),
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
+    g_print ("Failed to start the encoding\n");
+    return 1;
+  }
+  g_main_loop_run (mainloop);
+
+  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
+
+  return 0;
+}