From 34f03fe525ac9c9e646ac77b9b0b655bd46d433b Mon Sep 17 00:00:00 2001
From: Wouter Paesen <wouter@kangaroot.net>
Date: Wed, 14 Jun 2006 18:07:51 +0000
Subject: ext/soundtouch/: Make pitch element controllable via GstController
 interface (#344821).

Original commit message from CVS:
Patch by: Wouter Paesen  <wouter at kangaroot net>
* ext/soundtouch/Makefile.am:
* ext/soundtouch/gstpitch.cc:
Make pitch element controllable via GstController interface
(#344821).
* configure.ac:
Up core requirements to 0.10.8.1/CVS because earlier
GstControllers can't handle float properties correctly.
Check for GstController CFLAGS and LIBS.
* tests/icles/Makefile.am:
* tests/icles/pitch-test.c: (main):
Add small test program for the above (welcome to the 80s!).
---
 tests/icles/pitch-test.c | 99 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 tests/icles/pitch-test.c

(limited to 'tests/icles/pitch-test.c')

diff --git a/tests/icles/pitch-test.c b/tests/icles/pitch-test.c
new file mode 100644
index 00000000..7fe2b94e
--- /dev/null
+++ b/tests/icles/pitch-test.c
@@ -0,0 +1,99 @@
+/* GStreamer
+ *
+ * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
+ *
+ * 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.
+ */
+
+/* compile with :
+ * gcc -Wall $(pkg-config --cflags --libs gstreamer-0.10 gstreamer-controller-0.10) pitch.c -o pitch
+ */
+
+#include <string.h>
+#include <unistd.h>
+#include <gst/gst.h>
+#include <gst/controller/gstcontroller.h>
+
+int
+main (int argc, char **argv)
+{
+  GMainLoop *loop;
+  gint i;
+
+  GstElement *audiotestsrc;
+  GstElement *audioconvert1, *audioconvert2;
+  GstElement *pitch;
+  GstElement *sink;
+  GstElement *pipeline;
+  GstController *ctl;
+  GValue val = { 0, };
+
+  if (argc != 2) {
+    g_printerr ("Usage: %s <audiosink>\n", argv[0]);
+    return 1;
+  }
+
+  /* initialize GStreamer */
+  gst_init (&argc, &argv);
+  gst_controller_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);
+
+  ctl = gst_object_control_properties (G_OBJECT (pitch), "pitch", NULL);
+  gst_controller_set_interpolation_mode (ctl, "pitch", GST_INTERPOLATE_LINEAR);
+
+  g_value_init (&val, G_TYPE_FLOAT);
+
+  for (i = 0; i < 100; ++i) {
+    if (i % 2)
+      g_value_set_float (&val, 0.5);
+    else
+      g_value_set_float (&val, 1.5);
+
+    gst_controller_set (ctl, "pitch", i * GST_SECOND, &val);
+  }
+
+  gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  g_print ("Running\n");
+  g_main_loop_run (loop);
+
+  /* set up a controller */
+
+  /* clean up nicely */
+  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;
+}
-- 
cgit v1.2.1