Gstreamer 1.2.4.1 windows build. Gstreamer Editing Services Examples on Windows Visual Studio 2012 - c

Question

I have dowloaded and installed http://gstreamer.freedesktop.org/data/pkg/windows/1.2.4.1/ gstreamer. Then I set up Visual Studio 2012 C++ project, add all *.props files. I want to try out Gstreamer Editing Services (GES) example project test4.c:
#include <ges/ges.h>
#include <gst/pbutils/encoding-profile.h>
GstEncodingProfile *make_encoding_profile (gchar * audio, gchar * container);
/* 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_encoding_profile
* simple method creating an encoding profile. This is here in
* order not to clutter the main function. */
GstEncodingProfile *
make_encoding_profile (gchar * audio, gchar * container)
{
GstEncodingContainerProfile *profile;
GstEncodingProfile *stream;
GstCaps *caps;
caps = gst_caps_from_string (container);
profile =
gst_encoding_container_profile_new ((gchar *) "ges-test4", NULL, caps,
NULL);
gst_caps_unref (caps);
caps = gst_caps_from_string (audio);
stream = (GstEncodingProfile *)
gst_encoding_audio_profile_new (caps, NULL, NULL, 0);
gst_encoding_container_profile_add_profile (profile, stream);
gst_caps_unref (caps);
return (GstEncodingProfile *) profile;
}
int
main (int argc, gchar ** argv)
{
GESPipeline *pipeline;
GESTimeline *timeline;
GESTrack *tracka;
GESLayer *layer;
GMainLoop *mainloop;
GstEncodingProfile *profile;
gchar *container = (gchar *) "application/ogg";
gchar *audio = (gchar *) "audio/x-vorbis";
gchar *output_uri;
guint i;
GError *err = NULL;
GOptionEntry options[] = {
{"format", 'f', 0, G_OPTION_ARG_STRING, &container,
"Container format", "<GstCaps>"},
{"aformat", 'a', 0, G_OPTION_ARG_STRING, &audio,
"Audio format", "<GstCaps>"},
{NULL}
};
GOptionContext *ctx;
ctx = g_option_context_new ("- renders a sequence of audio files.");
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_printerr ("Error initializing: %s\n", err->message);
g_option_context_free (ctx);
return -1;
}
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 (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 = 2; 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);
/* Since we're using a GESSimpleLayer, objects will be automatically
* appended to the end of the layer */
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;
/* RENDER SETTINGS ! */
/* We set our output URI and rendering setting on the pipeline */
if (gst_uri_is_valid (argv[1])) {
output_uri = g_strdup (argv[1]);
} else {
output_uri = gst_filename_to_uri (argv[1], NULL);
}
profile = make_encoding_profile (audio, container);
if (!ges_pipeline_set_render_settings (pipeline, output_uri, profile))
return -1;
/* We want the pipeline to render (without any preview) */
if (!ges_pipeline_set_mode (pipeline, GES_PIPELINE_MODE_SMART_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 - 1, (GSourceFunc) g_main_loop_quit, mainloop);
g_main_loop_run (mainloop);
return 0;
}
The program runs from the begining to the end without any errors, however
I can't get the music files playing. I think the problem lurks in this piece of code:
if (gst_uri_is_valid (argv[1])) {
output_uri = g_strdup (argv[1]);
} else {
output_uri = gst_filename_to_uri (argv[1], NULL);
}
I don't really know what to type as the first command line argument (the output dir is expected). When I provide any directory and launch program, it waits for a few seconds and then prints out "Press any key to continue...", however I can't hear the music playing neither I find any files in the provided output directory. What is more I was unable to hear any sounds then trying out test1.c, test2.c and test3.c test examples too. Maybe there is special way to provide arguments? My arguments looked like this: D:/output D:/mp3/1.mp3 D:/mp3/2.mp3 .