static void
ges_track_video_transition_duration_changed (GESTrackObject * object,
guint64 duration)
{
GstElement *gnlobj = ges_track_object_get_gnlobject (object);
GESTrackVideoTransition *self = GES_TRACK_VIDEO_TRANSITION (object);
GESTrackVideoTransitionPrivate *priv = self->priv;
GstTimedValueControlSource *ts;
GST_LOG ("updating controller");
if (G_UNLIKELY (!gnlobj || !priv->control_source))
return;
ts = GST_TIMED_VALUE_CONTROL_SOURCE (priv->control_source);
GST_INFO ("duration: %" G_GUINT64_FORMAT, duration);
GST_LOG ("setting values on controller");
gst_timed_value_control_source_unset_all (ts);
gst_timed_value_control_source_set (ts, 0, priv->start_value);
gst_timed_value_control_source_set (ts, duration, priv->end_value);
priv->dur = duration;
GST_LOG ("done updating controller");
}
static void
set_program (GstObject * elem, GstStructure * prog)
{
const GstStructure *s;
GstControlSource *cs;
GstClockTime ts, dur;
gdouble v;
const GValue *frame;
GHashTable *css;
gint i, j;
const gchar *name;
css = g_hash_table_new (g_str_hash, g_str_equal);
ts = 0;
dur = gst_util_uint64_scale_int (GST_SECOND, 1, 15);
/* loop over each image in prog */
for (i = 0; i < gst_structure_n_fields (prog); i++) {
GST_DEBUG ("ctrl on %" GST_TIME_FORMAT, GST_TIME_ARGS (ts));
frame =
gst_structure_get_value (prog, gst_structure_nth_field_name (prog, i));
s = gst_value_get_structure (frame);
for (j = 0; j < gst_structure_n_fields (s); j++) {
name = gst_structure_nth_field_name (s, j);
cs = g_hash_table_lookup (css, name);
if (!cs) {
cs = gst_interpolation_control_source_new ();
gst_object_add_control_binding (elem,
gst_direct_control_binding_new (elem, name, cs));
g_object_set (cs, "mode", GST_INTERPOLATION_MODE_NONE, NULL);
g_hash_table_insert (css, (gpointer) name, cs);
gst_object_unref (cs);
}
gst_structure_get_double (s, name, &v);
gst_timed_value_control_source_set ((GstTimedValueControlSource *) cs, ts,
v);
GST_DEBUG (" %s = %lf", name, v);
}
ts += dur;
}
g_hash_table_unref (css);
}
int
main (int argc, char **argv)
{
GMainLoop *loop;
gint i;
GstElement *audiotestsrc;
GstElement *audioconvert1, *audioconvert2;
GstElement *pitch;
GstElement *sink;
GstElement *pipeline;
GstControlSource *cs;
GstTimedValueControlSource *tvcs;
if (argc != 2) {
g_printerr ("Usage: %s <audiosink>\n", argv[0]);
return 1;
}
/* initialize GStreamer */
gst_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
pipeline = gst_pipeline_new ("audio-player");
audiotestsrc = gst_element_factory_make ("audiotestsrc", "audiotestsrc");
g_assert (audiotestsrc != NULL);
audioconvert1 = gst_element_factory_make ("audioconvert", "audioconvert1");
g_assert (audioconvert1 != NULL);
audioconvert2 = gst_element_factory_make ("audioconvert", "audioconvert2");
g_assert (audioconvert2 != NULL);
pitch = gst_element_factory_make ("pitch", "pitch");
g_assert (pitch != NULL);
sink = gst_element_factory_make (argv[1], "sink");
g_assert (sink != NULL);
gst_bin_add_many (GST_BIN (pipeline),
audiotestsrc, audioconvert1, pitch, audioconvert2, sink, NULL);
gst_element_link_many (audiotestsrc, audioconvert1, pitch, audioconvert2,
sink, NULL);
/* set up a controller */
cs = gst_interpolation_control_source_new ();
g_object_set (cs, "mode", GST_INTERPOLATION_MODE_LINEAR, NULL);
gst_object_add_control_binding (pitch,
gst_direct_control_binding_new (pitch, "pitch", cs));
tvcs = (GstTimedValueControlSource *) cs;
for (i = 0; i < 100; ++i) {
if (i % 2)
gst_timed_value_control_source_set (tvcs, i * GST_SECOND, 0.5);
else
gst_timed_value_control_source_set (tvcs, i * GST_SECOND, 1.5);
}
gst_element_set_state (pipeline, GST_STATE_PLAYING);
g_print ("Running\n");
g_main_loop_run (loop);
/* clean up nicely */
gst_object_unref (cs);
g_print ("Returned, stopping playback\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
g_print ("Deleting pipeline\n");
gst_object_unref (GST_OBJECT (pipeline));
return 0;
}
static void
_update_control_bindings (GESTimelineElement * element, GstClockTime inpoint,
GstClockTime duration)
{
GParamSpec **specs;
guint n, n_specs;
GstControlBinding *binding;
GstTimedValueControlSource *source;
GESTrackElement *self = GES_TRACK_ELEMENT (element);
specs = ges_track_element_list_children_properties (self, &n_specs);
for (n = 0; n < n_specs; ++n) {
GList *values, *tmp;
GstTimedValue *last, *first, *prev = NULL, *next = NULL;
gfloat value_at_pos;
binding = ges_track_element_get_control_binding (self, specs[n]->name);
if (!binding)
continue;
g_object_get (binding, "control_source", &source, NULL);
if (duration == 0) {
gst_timed_value_control_source_unset_all (GST_TIMED_VALUE_CONTROL_SOURCE
(source));
continue;
}
values =
gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
(source));
if (g_list_length (values) == 0)
continue;
first = values->data;
for (tmp = values->next; tmp; tmp = tmp->next) {
next = tmp->data;
if (next->timestamp > inpoint)
break;
}
value_at_pos = interpolate_values_for_position (first, next, inpoint);
gst_timed_value_control_source_unset (source, first->timestamp);
gst_timed_value_control_source_set (source, inpoint, value_at_pos);
values =
gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
(source));
if (duration != GST_CLOCK_TIME_NONE) {
last = g_list_last (values)->data;
for (tmp = g_list_last (values)->prev; tmp; tmp = tmp->prev) {
prev = tmp->data;
if (prev->timestamp < duration + inpoint)
break;
}
value_at_pos =
interpolate_values_for_position (prev, last, duration + inpoint);
gst_timed_value_control_source_unset (source, last->timestamp);
gst_timed_value_control_source_set (source, duration + inpoint,
value_at_pos);
values =
gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
(source));
}
for (tmp = values; tmp; tmp = tmp->next) {
GstTimedValue *value = tmp->data;
if (value->timestamp < inpoint)
gst_timed_value_control_source_unset (source, value->timestamp);
else if (duration != GST_CLOCK_TIME_NONE
&& value->timestamp > duration + inpoint)
gst_timed_value_control_source_unset (source, value->timestamp);
}
}
g_free (specs);
}
