void
ges_base_xml_formatter_add_control_binding (GESBaseXmlFormatter * self,
const gchar * binding_type, const gchar * source_type,
const gchar * property_name, gint mode, const gchar * track_id,
GSList * timed_values)
{
GESBaseXmlFormatterPrivate *priv = _GET_PRIV (self);
GESTrackElement *element = NULL;
if (track_id[0] != '-' && priv->current_clip)
element = _get_element_by_track_id (priv, track_id, priv->current_clip);
else if (track_id[0] != '-' && priv->current_pending_clip) {
PendingBinding *pbinding;
pbinding = g_slice_new0 (PendingBinding);
pbinding->source = gst_interpolation_control_source_new ();
g_object_set (pbinding->source, "mode", mode, NULL);
gst_timed_value_control_source_set_from_list (GST_TIMED_VALUE_CONTROL_SOURCE
(pbinding->source), timed_values);
pbinding->propname = g_strdup (property_name);
pbinding->binding_type = g_strdup (binding_type);
pbinding->track_id = g_strdup (track_id);
priv->current_pending_clip->pending_bindings =
g_list_append (priv->current_pending_clip->pending_bindings, pbinding);
return;
}
else {
element = priv->current_track_element;
}
if (element == NULL) {
GST_WARNING ("No current track element to which we can append a binding");
return;
}
if (!g_strcmp0 (source_type, "interpolation")) {
GstControlSource *source;
source = gst_interpolation_control_source_new ();
ges_track_element_set_control_source (element, source,
property_name, binding_type);
g_object_set (source, "mode", mode, NULL);
gst_timed_value_control_source_set_from_list (GST_TIMED_VALUE_CONTROL_SOURCE
(source), timed_values);
} else
GST_WARNING ("This interpolation type is not supported\n");
}
static void
gst_controlled_property_add_interpolation_control_source (GstControlledProperty
* self)
{
GstControlSource *csource =
GST_CONTROL_SOURCE (gst_interpolation_control_source_new ());
GST_INFO
("Adding a GstInterpolationControlSource because of backward compatibility");
g_return_if_fail (!self->csource);
gst_control_source_bind (GST_CONTROL_SOURCE (csource), self->pspec);
self->csource = csource;
}
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);
}
static void
set_interpolation (GstObject * element, GESTrackVideoTransitionPrivate * priv,
const gchar * propname)
{
GstTimedValueControlSource *ts;
if (priv->control_source) {
ts = GST_TIMED_VALUE_CONTROL_SOURCE (priv->control_source);
gst_timed_value_control_source_unset_all (ts);
gst_object_unref (priv->control_source);
}
g_object_set (element, propname, (gfloat) 0.0, NULL);
priv->control_source = gst_interpolation_control_source_new ();
gst_object_add_control_binding (GST_OBJECT (element),
gst_direct_control_binding_new (GST_OBJECT (element), propname,
priv->control_source));
g_object_set (priv->control_source, "mode", GST_INTERPOLATION_MODE_LINEAR,
NULL);
}
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;
}
gint
main (gint argc, gchar ** argv)
{
gint res = 1;
GstElement *src, *sink;
GstElement *bin;
GstController *ctrl;
GstInterpolationControlSource *csource1, *csource2;
GstClock *clock;
GstClockID clock_id;
GstClockReturn wait_ret;
GValue vol = { 0, };
gst_init (&argc, &argv);
gst_controller_init (&argc, &argv);
/* build pipeline */
bin = gst_pipeline_new ("pipeline");
clock = gst_pipeline_get_clock (GST_PIPELINE (bin));
src = gst_element_factory_make ("audiotestsrc", "gen_audio");
if (!src) {
GST_WARNING ("need audiotestsrc from gst-plugins-base");
goto Error;
}
sink = gst_element_factory_make ("autoaudiosink", "play_audio");
if (!sink) {
GST_WARNING ("need autoaudiosink from gst-plugins-base");
goto Error;
}
gst_bin_add_many (GST_BIN (bin), src, sink, NULL);
if (!gst_element_link (src, sink)) {
GST_WARNING ("can't link elements");
goto Error;
}
/* square wave
g_object_set (G_OBJECT(src), "wave", 1, NULL);
*/
/* add a controller to the source */
if (!(ctrl = gst_controller_new (G_OBJECT (src), "freq", "volume", NULL))) {
GST_WARNING ("can't control source element");
goto Error;
}
csource1 = gst_interpolation_control_source_new ();
csource2 = gst_interpolation_control_source_new ();
gst_controller_set_control_source (ctrl, "volume",
GST_CONTROL_SOURCE (csource1));
gst_controller_set_control_source (ctrl, "freq",
GST_CONTROL_SOURCE (csource2));
/* Set interpolation mode */
gst_interpolation_control_source_set_interpolation_mode (csource1,
GST_INTERPOLATE_LINEAR);
gst_interpolation_control_source_set_interpolation_mode (csource2,
GST_INTERPOLATE_LINEAR);
/* set control values */
g_value_init (&vol, G_TYPE_DOUBLE);
g_value_set_double (&vol, 0.0);
gst_interpolation_control_source_set (csource1, 0 * GST_SECOND, &vol);
g_value_set_double (&vol, 1.0);
gst_interpolation_control_source_set (csource1, 5 * GST_SECOND, &vol);
g_object_unref (csource1);
g_value_set_double (&vol, 220.0);
gst_interpolation_control_source_set (csource2, 0 * GST_SECOND, &vol);
g_value_set_double (&vol, 3520.0);
gst_interpolation_control_source_set (csource2, 3 * GST_SECOND, &vol);
g_value_set_double (&vol, 440.0);
gst_interpolation_control_source_set (csource2, 6 * GST_SECOND, &vol);
g_object_unref (csource2);
clock_id =
gst_clock_new_single_shot_id (clock,
gst_clock_get_time (clock) + (7 * GST_SECOND));
/* run for 7 seconds */
if (gst_element_set_state (bin, GST_STATE_PLAYING)) {
if ((wait_ret = gst_clock_id_wait (clock_id, NULL)) != GST_CLOCK_OK) {
GST_WARNING ("clock_id_wait returned: %d", wait_ret);
}
gst_element_set_state (bin, GST_STATE_NULL);
}
/* cleanup */
g_object_unref (G_OBJECT (ctrl));
gst_clock_id_unref (clock_id);
gst_object_unref (G_OBJECT (clock));
gst_object_unref (G_OBJECT (bin));
res = 0;
Error:
return (res);
}
static GstElement *
ges_track_video_transition_create_element (GESTrackObject * object)
{
GstElement *topbin, *iconva, *iconvb, *oconv;
GObject *target = NULL;
const gchar *propname = NULL;
GstElement *mixer = NULL;
GstPad *sinka_target, *sinkb_target, *src_target, *sinka, *sinkb, *src;
GstController *controller;
GstInterpolationControlSource *control_source;
GESTrackVideoTransition *self;
GESTrackVideoTransitionPrivate *priv;
self = GES_TRACK_VIDEO_TRANSITION (object);
priv = self->priv;
GST_LOG ("creating a video bin");
topbin = gst_bin_new ("transition-bin");
iconva = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-a");
iconvb = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-b");
oconv = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-output");
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, oconv, NULL);
/* Prefer videomixer2 to videomixer */
mixer = gst_element_factory_make ("videomixer2", NULL);
if (mixer == NULL)
mixer = gst_element_factory_make ("videomixer", NULL);
g_object_set (G_OBJECT (mixer), "background", 1, NULL);
gst_bin_add (GST_BIN (topbin), mixer);
if (priv->type != GES_VIDEO_STANDARD_TRANSITION_TYPE_CROSSFADE) {
priv->sinka =
(GstPad *) link_element_to_mixer_with_smpte (GST_BIN (topbin), iconva,
mixer, priv->type, NULL);
priv->sinkb =
(GstPad *) link_element_to_mixer_with_smpte (GST_BIN (topbin), iconvb,
mixer, priv->type, &priv->smpte);
target = (GObject *) priv->smpte;
propname = "position";
priv->start_value = 1.0;
priv->end_value = 0.0;
} else {
priv->sinka = (GstPad *) link_element_to_mixer (iconva, mixer);
priv->sinkb = (GstPad *) link_element_to_mixer (iconvb, mixer);
target = (GObject *) priv->sinkb;
propname = "alpha";
priv->start_value = 0.0;
priv->end_value = 1.0;
}
priv->mixer = gst_object_ref (mixer);
fast_element_link (mixer, oconv);
sinka_target = gst_element_get_static_pad (iconva, "sink");
sinkb_target = gst_element_get_static_pad (iconvb, "sink");
src_target = gst_element_get_static_pad (oconv, "src");
sinka = gst_ghost_pad_new ("sinka", sinka_target);
sinkb = gst_ghost_pad_new ("sinkb", sinkb_target);
src = gst_ghost_pad_new ("src", src_target);
gst_element_add_pad (topbin, src);
gst_element_add_pad (topbin, sinka);
gst_element_add_pad (topbin, sinkb);
gst_object_unref (sinka_target);
gst_object_unref (sinkb_target);
gst_object_unref (src_target);
/* set up interpolation */
g_object_set (target, propname, (gfloat) 0.0, NULL);
controller = gst_object_control_properties (target, propname, NULL);
control_source = gst_interpolation_control_source_new ();
gst_controller_set_control_source (controller,
propname, GST_CONTROL_SOURCE (control_source));
gst_interpolation_control_source_set_interpolation_mode (control_source,
GST_INTERPOLATE_LINEAR);
priv->controller = controller;
priv->control_source = control_source;
return topbin;
}
