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!).

ChangeLog

@@ -1,3 +1,21 @@
+2006-06-14  Tim-Philipp Müller  <tim at centricular dot net>
+
+	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!).
+
 2006-06-14  Tim-Philipp Müller  <tim at centricular dot net>
 
 	Patch by: Sebastian Dröge  <slomo at circular-chaos org>

configure.ac

@@ -42,7 +42,7 @@ dnl AS_LIBTOOL_TAGS([CXX])
 AM_PROG_LIBTOOL
 
 dnl *** required versions of GStreamer stuff ***
-GST_REQ=0.10.6.1
+GST_REQ=0.10.8.1
 GSTPB_REQ=0.10.3
 
 dnl *** autotools stuff ****
@@ -158,8 +158,8 @@ GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ])
 GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ])
 GST_CHECK_GST_GDP($GST_MAJORMINOR, [$GST_REQ])
 GST_CHECK_GST_CHECK($GST_MAJORMINOR, [$GST_REQ], no)
+GST_CHECK_GST_CONTROLLER($GST_MAJORMINOR, [$GST_REQ])
 GST_CHECK_GST_PLUGINS_BASE($GST_MAJORMINOR, [$GSTPB_REQ], no)
-
 GSTPB_PLUGINS_DIR=`$PKG_CONFIG gstreamer-plugins-base-$GST_MAJORMINOR --variable pluginsdir`
 AC_SUBST(GSTPB_PLUGINS_DIR)
 AC_MSG_NOTICE(Using GStreamer Base Plugins in $GSTPB_PLUGINS_DIR)

ext/soundtouch/Makefile.am

@@ -2,8 +2,8 @@ plugin_LTLIBRARIES = libgstpitch.la
 
 libgstpitch_la_SOURCES = gstpitch.cc
 
-libgstpitch_la_CXXFLAGS = @GST_CFLAGS@ @GST_BASE_CFLAGS@ @SOUNDTOUCH_CFLAGS@
+libgstpitch_la_CXXFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(SOUNDTOUCH_CFLAGS) $(GST_CONTROLLER_CFLAGS)
-libgstpitch_la_LIBADD = @GST_LIBS@ @GST_BASE_LIBS@ @SOUNDTOUCH_LIBS@
+libgstpitch_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS) $(SOUNDTOUCH_LIBS) $(GST_CONTROLLER_LIBS)
-libgstpitch_la_LDFLAGS = @GST_PLUGIN_LDFLAGS@
+libgstpitch_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 
 noinst_HEADERS = gstpitch.hh

ext/soundtouch/gstpitch.cc

@@ -22,6 +22,7 @@
 #endif
 
 #include <gst/gst.h>
+#include <gst/controller/gstcontroller.h>
 #include "gstpitch.hh"
 #include <math.h>
 
@@ -136,17 +137,17 @@ gst_pitch_class_init (GstPitchClass * klass)
   g_object_class_install_property (gobject_class, ARG_PITCH,
       g_param_spec_float ("pitch", "Pitch",
           "Audio stream pitch", 0.1, 10.0, 1.0,
-          (GParamFlags) G_PARAM_READWRITE));
+          (GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE)));
 
   g_object_class_install_property (gobject_class, ARG_TEMPO,
       g_param_spec_float ("tempo", "Tempo",
           "Audio stream tempo", 0.1, 10.0, 1.0,
-          (GParamFlags) G_PARAM_READWRITE));
+          (GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE)));
 
   g_object_class_install_property (gobject_class, ARG_RATE,
       g_param_spec_float ("rate", "Rate",
           "Audio stream rate", 0.1, 10.0, 1.0,
-          (GParamFlags) G_PARAM_READWRITE));
+          (GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE)));
 
   g_type_class_add_private (gobject_class, sizeof (GstPitchPrivate));
 }
@@ -640,6 +641,8 @@ gst_pitch_chain (GstPad * pad, GstBuffer * buffer)
   pitch = GST_PITCH (GST_PAD_PARENT (pad));
   priv = GST_PITCH_GET_PRIVATE (pitch);
 
+  gst_object_sync_values (G_OBJECT (pitch), pitch->next_buffer_time);
+
   /* push the received samples on the soundtouch buffer */
   GST_LOG_OBJECT (pitch, "incoming buffer (%d samples)",
       (gint) (GST_BUFFER_SIZE (buffer) / pitch->sample_size));
@@ -696,6 +699,8 @@ gst_pitch_change_state (GstElement * element, GstStateChange transition)
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
+  gst_controller_init (NULL, NULL);
+
   GST_DEBUG_CATEGORY_INIT (pitch_debug, "pitch", 0,
       "audio pitch control element");
 

tests/icles/Makefile.am

@@ -12,5 +12,18 @@ else
 GST_V4L2_TESTS =
 endif
 
-noinst_PROGRAMS = $(GST_V4L2_TESTS)
 
+if USE_SOUNDTOUCH
+
+GST_SOUNDTOUCH_TESTS = pitch-test
+
+pitch_test_SOURCES = pitch-test.c
+pitch_test_CFLAGS  = $(GST_CONTROLLER_CFLAGS)
+pitch_test_LDADD   = $(GST_CONTROLLER_LIBS)
+pitch_test_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+else
+GST_SOUNDTOUCH_TESTS = 
+endif
+
+noinst_PROGRAMS = $(GST_V4L2_TESTS) $(GST_SOUNDTOUCH_TESTS)

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;
+}