From febef56cf2c9553ece69cf0f5e7e8ed4e110d7f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege@collabora.co.uk>
Date: Fri, 29 May 2009 15:32:24 +0200
Subject: shapewipe: Add a simple shapewipe transition filter & example
 application

---
 tests/examples/shapewipe/shapewipe-example.c | 128 +++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 tests/examples/shapewipe/shapewipe-example.c

(limited to 'tests/examples/shapewipe/shapewipe-example.c')

diff --git a/tests/examples/shapewipe/shapewipe-example.c b/tests/examples/shapewipe/shapewipe-example.c
new file mode 100644
index 00000000..3b57bcc8
--- /dev/null
+++ b/tests/examples/shapewipe/shapewipe-example.c
@@ -0,0 +1,128 @@
+/* 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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