[gnome-devel-docs] guitar-tuner: Cleaned up files and added source-code

[Johannes Schmid <jhs src gnome org>]

commit 3e5295e1624fb88b8eb5e41c82f47f1bc1c789a0
Author: Johannes Schmid <jhs gnome org>
Date:   Fri Dec 3 17:53:05 2010 +0100

    guitar-tuner: Cleaned up files and added source-code

 demos/{guitar_tuner => }/guitar-tuner.c.page       |    0
 .../{ => }/guitar_tuner/guitar-tuner.png           |  Bin 5677 -> 5677 bytes
 demos/guitar_tuner/main.c                          |  117 ++++++++++++++++++++
 3 files changed, 117 insertions(+), 0 deletions(-)
---
diff --git a/demos/guitar_tuner/guitar-tuner.c.page b/demos/guitar-tuner.c.page
similarity index 100%
rename from demos/guitar_tuner/guitar-tuner.c.page
rename to demos/guitar-tuner.c.page
diff --git a/demos/guitar_tuner/guitar_tuner/guitar-tuner.png b/demos/guitar_tuner/guitar-tuner.png
similarity index 100%
rename from demos/guitar_tuner/guitar_tuner/guitar-tuner.png
rename to demos/guitar_tuner/guitar-tuner.png
diff --git a/demos/guitar_tuner/main.c b/demos/guitar_tuner/main.c
new file mode 100644
index 0000000..4703cf4
--- /dev/null
+++ b/demos/guitar_tuner/main.c
@@ -0,0 +1,117 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
+/*
+ * main.c
+ * Copyright (C) Johannes Schmid 2010 <jhs gnome org>
+ * 
+ * guitar-tuner is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * guitar-tuner 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <glib/gi18n.h>
+
+/* For testing propose use the local (not installed) ui file */
+/* #define UI_FILE PACKAGE_DATA_DIR"/guitar_tuner/ui/guitar_tuner.ui" */
+#define UI_FILE "src/guitar_tuner.ui"
+
+/* Frequencies of the tones */
+#define NOTE_E 369.23
+#define NOTE_A 440
+#define NOTE_D 587.33
+#define NOTE_G 783.99
+#define NOTE_B 987.77
+#define NOTE_e 1318.5
+
+#define LENGTH 500
+
+#define WIDGET_WINDOW "window"
+
+static gboolean
+pipeline_stop (GstElement* pipeline)
+{
+	gst_element_set_state (pipeline, GST_STATE_PAUSED);
+	g_object_unref (pipeline);
+
+	/* disconnect handler */
+	return FALSE;
+}
+
+static void 
+play_sound (gdouble frequency)
+{
+	GstElement *source, *sink;
+	GstElement *pipeline;
+
+	pipeline = gst_pipeline_new ("note");
+	source   = gst_element_factory_make ("audiotestsrc",
+	                                     "source");
+	sink     = gst_element_factory_make ("autoaudiosink",
+	                                     "output");
+
+	/* set frequency */
+	g_object_set (source, "freq", frequency, NULL);
+	
+	gst_bin_add_many (GST_BIN (pipeline), source, sink, NULL);
+	gst_element_link (source, sink);
+
+	gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+	/* stop it after 200ms */
+	g_timeout_add (LENGTH, (GSourceFunc) pipeline_stop, pipeline);
+}
+
+/* Callback for the buttons */
+void on_button_clicked (GtkButton* button,
+                        gpointer user_data)
+{
+	GtkWidget* label = gtk_bin_get_child (GTK_BIN (button));
+	const gchar* text = gtk_label_get_label (GTK_LABEL (label));
+
+	if (g_str_equal (text, _("E")))
+	    play_sound (NOTE_E);
+	else if (g_str_equal (text, _("A")))
+	    play_sound (NOTE_A);
+	else if (g_str_equal (text, _("G")))
+	    play_sound (NOTE_G);
+	else if (g_str_equal (text, _("D")))
+	    play_sound (NOTE_D);
+	else if (g_str_equal (text, _("B")))
+	    play_sound (NOTE_B);
+	else if (g_str_equal (text, _("e")))
+	    play_sound (NOTE_e);
+}
+
+int
+main (int argc, char *argv[])
+{
+ 	GtkWidget *window;
+	GtkBuilder *builder;
+
+	
+	/* Initialize gtk+ and gstreamer */
+	gtk_init (&argc, &argv);
+	gst_init (&argc, &argv);
+
+	builder = gtk_builder_new ();
+	gtk_builder_add_from_file (builder, UI_FILE, NULL);
+
+	window = GTK_WIDGET (gtk_builder_get_object (builder, WIDGET_WINDOW));
+	gtk_builder_connect_signals (builder, NULL);
+	
+	gtk_widget_show (window);
+
+	gtk_main ();
+	return 0;
+}