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)
{
GstElement *pipeline;
GstElement *shapewipe;
GstControlSource *cs;
GMainLoop *loop;
GstBus *bus;
gchar *pipeline_string;
gfloat border = 0.05;
if (argc < 2) {
g_print ("Usage: shapewipe mask.png <border>\n");
return -1;
}
gst_init (&argc, &argv);
if (argc > 2) {
border = atof (argv[2]);
}
pipeline_string =
g_strdup_printf
("videotestsrc ! video/x-raw,format=(string)AYUV,width=640,height=480 ! shapewipe name=shape border=%f ! videomixer name=mixer ! videoconvert ! autovideosink filesrc location=%s ! typefind ! decodebin2 ! videoconvert ! videoscale ! queue ! shape.mask_sink videotestsrc pattern=snow ! video/x-raw,format=(string)AYUV,width=640,height=480 ! queue ! mixer.",
border, argv[1]);
pipeline = gst_parse_launch (pipeline_string, NULL);
g_free (pipeline_string);
if (pipeline == NULL) {
g_print ("Failed to create pipeline\n");
return -2;
}
shapewipe = gst_bin_get_by_name (GST_BIN (pipeline), "shape");
cs = gst_lfo_control_source_new ();
gst_object_add_control_binding (GST_OBJECT_CAST (shapewipe),
gst_direct_control_binding_new (GST_OBJECT_CAST (shapewipe), "position",
cs));
g_object_set (cs,
"amplitude", 0.5,
"offset", 0.5, "frequency", 0.25, "timeshift", 500 * GST_MSECOND, NULL);
g_object_unref (cs);
loop = g_main_loop_new (NULL, FALSE);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_signal_watch (bus);
g_signal_connect (G_OBJECT (bus), "message", G_CALLBACK (on_message), loop);
gst_object_unref (GST_OBJECT (bus));
if (gst_element_set_state (pipeline,
GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
g_error ("Failed to go into PLAYING state");
return -4;
}
g_main_loop_run (loop);
gst_element_set_state (pipeline, GST_STATE_NULL);
g_main_loop_unref (loop);
gst_object_unref (G_OBJECT (pipeline));
return 0;
}
