mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/* GStreamer
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* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gst/gst.h>
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#include <gst/controller/gstcontroller.h>
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#include <gst/controller/gstlfocontrolsource.h>
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static gboolean
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on_message (GstBus * bus, GstMessage * message, gpointer user_data)
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{
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GMainLoop *loop = (GMainLoop *) user_data;
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switch (GST_MESSAGE_TYPE (message)) {
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case GST_MESSAGE_ERROR:
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g_warning ("Got ERROR");
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g_main_loop_quit (loop);
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break;
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case GST_MESSAGE_WARNING:
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g_warning ("Got WARNING");
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g_main_loop_quit (loop);
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break;
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case GST_MESSAGE_EOS:
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g_main_loop_quit (loop);
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break;
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default:
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break;
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}
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return TRUE;
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}
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gint
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main (gint argc, gchar ** argv)
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{
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GstElement *pipeline;
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GstElement *shapewipe;
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GstController *ctrl;
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GstLFOControlSource *csource;
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GValue val = { 0, };
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GMainLoop *loop;
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GstBus *bus;
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gchar *pipeline_string;
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if (argc != 2) {
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g_print ("Usage: shapewipe mask.png\n");
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return -1;
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}
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gst_init (&argc, &argv);
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gst_controller_init (&argc, &argv);
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pipeline_string =
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g_strdup_printf
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("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.",
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argv[1]);
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pipeline = gst_parse_launch (pipeline_string, NULL);
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g_free (pipeline_string);
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if (pipeline == NULL) {
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g_print ("Failed to create pipeline\n");
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return -2;
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}
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shapewipe = gst_bin_get_by_name (GST_BIN (pipeline), "shape");
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if (!(ctrl = gst_controller_new (G_OBJECT (shapewipe), "position", NULL))) {
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g_print ("can't control shapewipe element\n");
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return -3;
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}
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csource = gst_lfo_control_source_new ();
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gst_controller_set_control_source (ctrl, "position",
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GST_CONTROL_SOURCE (csource));
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g_value_init (&val, G_TYPE_FLOAT);
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g_value_set_float (&val, 0.5);
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g_object_set (G_OBJECT (csource), "amplitude", &val, NULL);
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g_value_set_float (&val, 0.5);
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g_object_set (G_OBJECT (csource), "offset", &val, NULL);
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g_value_unset (&val);
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g_object_set (G_OBJECT (csource), "frequency", 0.5, NULL);
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g_object_set (G_OBJECT (csource), "timeshift", 500 * GST_MSECOND, NULL);
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g_object_unref (csource);
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loop = g_main_loop_new (NULL, FALSE);
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bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
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gst_bus_add_signal_watch (bus);
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g_signal_connect (G_OBJECT (bus), "message", G_CALLBACK (on_message), loop);
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gst_object_unref (GST_OBJECT (bus));
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if (gst_element_set_state (pipeline,
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GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
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g_error ("Failed to go into PLAYING state");
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return -4;
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}
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g_main_loop_run (loop);
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gst_element_set_state (pipeline, GST_STATE_NULL);
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g_main_loop_unref (loop);
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g_object_unref (G_OBJECT (ctrl));
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gst_object_unref (G_OBJECT (pipeline));
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return 0;
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}
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