gstreamer/tests/examples/transition.c
Brandon Lewis c9a2f73579 hacking
2010-06-09 11:28:07 +02:00

173 lines
4.8 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon@alum.berkeley.edu>
*
* 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>
typedef struct
{
int type;
char *name;
} transition_type;
transition_type transitions[] = {
{-1, "fade"},
{0, "wipe_ltr"},
{1, "wipe_ttb"},
};
#define N_TRANSITIONS 3
#define INVALID_TRANSITION -2
int
transition_for_name (char *name)
{
return -1;
}
void
notify_max_duration_cb (GObject * object)
{
g_print ("got here\n");
}
GESTimelineObject *
make_source (char *path, guint64 start, guint64 duration, gint priority)
{
char *uri = g_strdup_printf ("file://%s", path);
GESTimelineObject *ret =
GES_TIMELINE_OBJECT (ges_timeline_filesource_new (uri));
g_object_set (ret, "start", start, "duration", duration,
"priority", priority, "in-point", 0, NULL);
g_free (uri);
return ret;
}
gboolean
print_transition_data (GESTimelineObject * tr)
{
if (!tr)
return FALSE;
GESTrackObject *trackobj = GES_TRACK_OBJECT (tr->trackobjects->data);
GstElement *gnlobj = trackobj->gnlobject;
guint64 start, duration;
gint priority;
char *name;
g_object_get (gnlobj, "start", &start, "duration", &duration,
"priority", &priority, "name", &name, NULL);
g_print ("gnlobject for %s: %ld %ld %d\n", name, start, duration, priority);
return FALSE;
}
int
main (int argc, char **argv)
{
GError *err = NULL;
GOptionContext *ctx;
GESTimelinePipeline *pipeline;
GESTimeline *timeline;
GESTrack *trackv;
GESTimelineLayer *layer1;
GESTimelineObject *srca, *srcb;
GMainLoop *mainloop;
gint type;
gchar *uri = NULL;
gdouble transition_duration;
GOptionEntry options[] = {
{"type", 't', 0, G_OPTION_ARG_INT, &type,
"type of transition to create (smpte numeric)", "<smpte" "transition>"},
{"duration", 'd', 0.0, G_OPTION_ARG_DOUBLE, &transition_duration,
"duration of transition", "seconds"},
{NULL}
};
if (!g_thread_supported ())
g_thread_init (NULL);
ctx = g_option_context_new ("- transition between two media 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_print ("Error initializing %s\n", err->message);
exit (1);
}
if (argc < 4) {
g_print ("%s", g_option_context_get_help (ctx, TRUE, NULL));
exit (0);
}
guint64 tdur = (guint64) transition_duration * GST_SECOND;
g_option_context_free (ctx);
ges_init ();
pipeline = ges_timeline_pipeline_new ();
ges_timeline_pipeline_set_mode (pipeline, TIMELINE_MODE_PREVIEW_VIDEO);
timeline = ges_timeline_new ();
ges_timeline_pipeline_add_timeline (pipeline, timeline);
trackv = ges_track_video_raw_new ();
ges_timeline_add_track (timeline, trackv);
layer1 = GES_TIMELINE_LAYER (ges_timeline_layer_new ());
g_object_set (layer1, "priority", 0, NULL);
if (!ges_timeline_add_layer (timeline, layer1))
return -1;
guint64 aduration = (guint64) (atof (argv[2]) * GST_SECOND);
guint64 bduration = (guint64) (atof (argv[4]) * GST_SECOND);
guint64 tstart = aduration - tdur;
srca = make_source (argv[1], 0, aduration, 1);
srcb = make_source (argv[3], tstart, bduration, 2);
ges_timeline_layer_add_object (layer1, srca);
ges_timeline_layer_add_object (layer1, srcb);
g_timeout_add_seconds (1, (GSourceFunc) print_transition_data, srca);
g_timeout_add_seconds (1, (GSourceFunc) print_transition_data, srcb);
GESTimelineTransition *tr = NULL;
if (tdur != 0) {
g_print ("creating transition at %ld of %f duration (%ld ns)\n",
tstart, transition_duration, tdur);
tr = ges_timeline_transition_new ();
g_object_set (tr, "start", tstart, "duration", tdur, "in-point", 0, NULL);
ges_timeline_layer_add_object (layer1, GES_TIMELINE_OBJECT (tr));
g_timeout_add_seconds (1, (GSourceFunc) print_transition_data, tr);
}
mainloop = g_main_loop_new (NULL, FALSE);
g_timeout_add_seconds (((aduration + bduration) / GST_SECOND) + 1,
(GSourceFunc) g_main_loop_quit, mainloop);
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
g_main_loop_run (mainloop);
return 0;
}