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/* GStreamer
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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 <gst/gst.h>
#include <gst/controller/gstcontroller.h>
#include <gst/controller/gstlfocontrolsource.h>
static gboolean
on_message (GstBus * bus, GstMessage * message, gpointer user_data)
{
GMainLoop *loop = (GMainLoop *) user_data;
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_warning ("Got ERROR");
g_main_loop_quit (loop);
break;
case GST_MESSAGE_WARNING:
g_warning ("Got WARNING");
g_main_loop_quit (loop);
break;
case GST_MESSAGE_EOS:
g_main_loop_quit (loop);
break;
default:
break;
}
return TRUE;
}
gint
main (gint argc, gchar ** argv)
{
GstElement *pipeline;
GstElement *shapewipe;
GstController *ctrl;
GstLFOControlSource *csource;
GValue val = { 0, };
GMainLoop *loop;
GstBus *bus;
gchar *pipeline_string;
if (argc != 2) {
g_print ("Usage: shapewipe mask.png\n");
return -1;
}
gst_init (&argc, &argv);
gst_controller_init (&argc, &argv);
pipeline_string =
g_strdup_printf
("videotestsrc ! video/x-raw-yuv,width=640,height=480 ! shapewipe name=shape ! videomixer name=mixer ! ffmpegcolorspace ! autovideosink filesrc location=%s ! typefind ! decodebin2 ! ffmpegcolorspace ! videoscale ! queue ! shape.mask_sink videotestsrc pattern=snow ! video/x-raw-yuv,width=640,height=480 ! queue ! mixer.",
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");
if (!(ctrl = gst_controller_new (G_OBJECT (shapewipe), "position", NULL))) {
g_print ("can't control shapewipe element\n");
return -3;
}
csource = gst_lfo_control_source_new ();
gst_controller_set_control_source (ctrl, "position",
GST_CONTROL_SOURCE (csource));
g_value_init (&val, G_TYPE_FLOAT);
g_value_set_float (&val, 0.5);
g_object_set (G_OBJECT (csource), "amplitude", &val, NULL);
g_value_set_float (&val, 0.5);
g_object_set (G_OBJECT (csource), "offset", &val, NULL);
g_value_unset (&val);
g_object_set (G_OBJECT (csource), "frequency", 0.5, NULL);
g_object_set (G_OBJECT (csource), "timeshift", 500 * GST_MSECOND, NULL);
g_object_unref (csource);
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);
g_object_unref (G_OBJECT (ctrl));
gst_object_unref (G_OBJECT (pipeline));
return 0;
}
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