Initial check-in of gst-sdr-j-fm boilerplate code

16 files changed, 1052 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..4004732
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Original SDR-J software by Jan van Katwijk <j.vankatwijk@gmail.com>
+GST element by Bob Ham <bob.ham@collabora.com> 
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d511905
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+
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+library.  If this is what you want to do, use the GNU Lesser General
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diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/ChangeLog
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..bb736fc
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src tests
+
+EXTRA_DIST = autogen.sh
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..3e966ab
--- /dev/null
+++ b/NEWS
@@ -0,0 +1 @@
+Initial release - working FM radio
diff --git a/README b/README
new file mode 100644
index 0000000..546c7b5
--- /dev/null
+++ b/README
@@ -0,0 +1,23 @@
+gst-sdr-j-fm is a GStreamer wrapper/fork around the SDR-J FM receiver.
+It provides ability to playback FM radio from signal acquires from devices
+supported by the RTL SDR projects. Demodulation is done in software re-using
+code initially found in the SDR-J software.
+
+To use it, you need GStreamer 1.0.
+
+Install the GStreamer 1.0 dev packages, then just build and install this module.
+
+For example, again on Raspbian:
+
+./autogen --prefix=/usr
+make
+sudo make install
+
+Then, you can try out the playing fm radio:
+
+gst-launch-1.0 playbin uri=fm:///99.9
+
+gst-inspect-1.0 sdrjfmsrc to get an idea of the properties that have been
+implemented.
+
+See the REQUIREMENTS file for the full list of build requirements.
diff --git a/REQUIREMENTS b/REQUIREMENTS
new file mode 100644
index 0000000..4ddfa52
--- /dev/null
+++ b/REQUIREMENTS
@@ -0,0 +1,10 @@
+gst-sdr-j-fm requires:
+
+	- autoconf
+	- automake
+	- libtool
+	- libgstreamer1.0-dev
+	- libgstreamer-plugins-base1.0-dev
+	- librtlsdr-dev
+
+Packge names may vary between distros.
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..9df38d3
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+# you can either set the environment variables AUTOCONF, AUTOHEADER, AUTOMAKE,
+# ACLOCAL, AUTOPOINT and/or LIBTOOLIZE to the right versions, or leave them
+# unset and get the defaults
+
+autoreconf --verbose --force --install --make || {
+ echo 'autogen.sh failed';
+ exit 1;
+}
+
+./configure || {
+ echo 'configure failed';
+ exit 1;
+}
+
+echo
+echo "Now type 'make' to compile this module."
+echo
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..6ab1546
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,93 @@
+dnl required version of autoconf
+AC_PREREQ([2.53])
+
+AC_INIT([gstsdrjfm],[1.0.0])
+
+dnl required versions of gstreamer and plugins-base
+GST_REQUIRED=1.0.0
+GSTPB_REQUIRED=1.0.0
+
+AC_CONFIG_SRCDIR([src/gstsdrjfm.c])
+AC_CONFIG_HEADERS([config.h])
+
+dnl required version of automake
+AM_INIT_AUTOMAKE([-Wno-portability 1.11 no-dist-gzip dist-xz tar-ustar subdir-objects])
+
+dnl enable mainainer mode by default
+AM_MAINTAINER_MODE([enable])
+
+dnl Pretty Printing
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],
+  [AM_DEFAULT_VERBOSITY=1
+   AC_SUBST(AM_DEFAULT_VERBOSITY)])
+
+dnl check for tools (compiler etc.)
+AC_PROG_CC
+AC_PROG_CXX
+
+dnl required version of libtool
+LT_PREREQ([2.2.6])
+LT_INIT
+
+dnl give error and exit if we don't have pkgconfig
+AC_CHECK_PROG(HAVE_PKGCONFIG, pkg-config, [ ], [
+  AC_MSG_ERROR([You need to have pkg-config installed!])
+])
+AC_PATH_PROG(GLIB_MKENUMS, glib-mkenums)
+
+dnl gstreamer deps
+PKG_CHECK_MODULES(GST, [
+  gstreamer-1.0 >= $GST_REQUIRED
+  gstreamer-base-1.0 >= $GST_REQUIRED
+  gstreamer-audio-1.0 >= $GSTPB_REQUIRED
+], [
+  AC_SUBST(GST_CFLAGS)
+  AC_SUBST(GST_LIBS)
+], [
+  AC_MSG_ERROR([
+      You need to install or upgrade the GStreamer development
+      packages on your system. On debian-based systems these are
+      libgstreamer1.0-dev and libgstreamer-plugins-base1.0-dev.
+      on RPM-based systems gstreamer1.0-devel, libgstreamer1.0-devel
+      or similar. The minimum version required is $GST_REQUIRED.
+  ])
+])
+
+dnl need libstlsdr to capture
+PKG_CHECK_MODULES(RS, [
+  librtlsdr
+], [
+  AC_SUBST(RS_CFLAGS)
+  AC_SUBST(RS_LIBS)
+], [
+  AC_MSG_ERROR([
+      You need to install development package of RTL SDR library.
+  ])
+])
+
+dnl check if compiler understands -Wall (if yes, add -Wall to GST_CFLAGS)
+AC_MSG_CHECKING([to see if compiler understands -Wall])
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wall"
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ ], [ ])], [
+  GST_CFLAGS="$GST_CFLAGS -Wall"
+  AC_MSG_RESULT([yes])
+], [
+  AC_MSG_RESULT([no])
+])
+
+dnl set the plugindir where plugins should be installed (for src/Makefile.am)
+if test "x${prefix}" = "x$HOME"; then
+  plugindir="$HOME/.gstreamer-1.0/plugins"
+else
+  plugindir="`pkg-config gstreamer-1.0 --variable pluginsdir`"
+fi
+AC_SUBST(plugindir)
+
+dnl set proper LDFLAGS for plugins
+GST_PLUGIN_LDFLAGS='-module -avoid-version -export-symbols-regex [_]*\(gst_\|Gst\|GST_\).*'
+AC_SUBST(GST_PLUGIN_LDFLAGS)
+
+AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile])
+AC_OUTPUT
+
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..0d5d938
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,12 @@
+plugin_LTLIBRARIES = libgstsdrjfm.la
+
+libgstsdrjfm_la_SOURCES = gstsdrjfm.c \
+                         gstsdrjfmsrc.c
+
+libgstsdrjfm_la_CFLAGS = $(GST_CFLAGS) $(RS_CFLAGS)
+libgstsdrjfm_la_LIBADD = $(GST_LIBS) $(RS_LIBS)
+libgstsdrjfm_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+libgstsdrjfm_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
+
+noinst_HEADERS = gstsdrjfmsrc.h
+
diff --git a/src/gstsdrjfm.c b/src/gstsdrjfm.c
new file mode 100644
index 0000000..3fa6f3e
--- /dev/null
+++ b/src/gstsdrjfm.c
@@ -0,0 +1,44 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstsdrjfmsrc.h"
+
+GST_DEBUG_CATEGORY (sdrjfm_debug);
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  if (!gst_element_register (plugin, "sdrjfmsrc", GST_RANK_SECONDARY,
+          GST_TYPE_SDRJFM_SRC))
+    return FALSE;
+
+  GST_DEBUG_CATEGORY_INIT (sdrjfm_debug, "sdrjfm", 0, "SDR-J FM plugin");
+
+  return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    sdrjfm,
+    "SDR-J FM support for GStreamer",
+    plugin_init, VERSION, "GPL", "sdrjfm", "http://www.collabora.com");
diff --git a/src/gstsdrjfmsrc.c b/src/gstsdrjfmsrc.c
new file mode 100644
index 0000000..6a76b6d
--- /dev/null
+++ b/src/gstsdrjfmsrc.c
@@ -0,0 +1,235 @@
+ /* GStreamer
+ * Copyright (C) 2014, Collabora Ltd. <info@collabora.com>
+ *
+ * gstsdrjfmsrc.c:
+ *
+ * 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., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/* Note, the plugin code is left LPGLv2, so this code can be copy pasted to
+ * form other FM sources later if it makes sense. But the plugin will remain
+ * GPLv2 since the backend is from GPLv2 program.
+ */
+
+/**
+ * SECTION:element-sdrjfmsrc
+ *
+ * This element lets capture from RTL SDR supported radio card.
+ *
+ * <refsect2>
+ * <title>Example pipelines</title>
+ * |[
+ * gst-launch-1.0 -v sdrjfmsrc frequency=97700000 ! pulsesink
+ * ]| will playback live FM radio channel 97.7.
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstsdrjfmsrc.h"
+
+GST_DEBUG_CATEGORY_EXTERN (sdrjfm_debug);
+#define GST_CAT_DEFAULT sdrjfm_debug
+
+#define DEFAULT_FREQUENCY  96700
+
+enum
+{
+  PROP_0,
+  PROP_FREQUENCY
+};
+
+/* signals and args */
+enum
+{
+};
+
+#define gst_sdrjfm_src_parent_class parent_class
+G_DEFINE_TYPE (GstSdrjfmSrc, gst_sdrjfm_src, GST_TYPE_AUDIO_SRC);
+
+static GstStaticPadTemplate sdrjfmsrc_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-raw, "
+        "format = (string) " GST_AUDIO_NE(S16) ", "
+        "layout = (string) interleaved, "
+        "rate = (int) 44100, "
+        "channels = (int) 2; ")
+    );
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+static void
+gst_sdrjfm_src_set_frequency (GstSdrjfmSrc *self, gint frequency)
+{
+}
+
+static gint
+gst_sdrjfm_src_get_frequency (GstSdrjfmSrc *self)
+{
+}
+
+static void
+ gst_sdrjfm_src_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstSdrjfmSrc *self = GST_SDRJFM_SRC (object);
+
+  GST_OBJECT_LOCK (self);
+
+  switch (prop_id) {
+    case PROP_FREQUENCY:
+      gst_sdrjfm_src_set_frequency (self, g_value_get_int (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+
+  GST_OBJECT_UNLOCK (self);
+}
+
+static void
+gst_sdrjfm_src_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstSdrjfmSrc *self = GST_SDRJFM_SRC (object);
+
+  GST_OBJECT_LOCK (self);
+
+  switch (prop_id) {
+    case PROP_FREQUENCY:
+      g_value_set_int (value, gst_sdrjfm_src_get_frequency (self));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+
+  GST_OBJECT_UNLOCK (self);
+}
+
+static gboolean
+gst_sdrjfm_src_open (GstAudioSrc * asrc)
+{
+  GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static gboolean
+gst_sdrjfm_src_close (GstAudioSrc * asrc)
+{
+  GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static gboolean
+gst_sdrjfm_src_prepare (GstAudioSrc * asrc, GstAudioRingBufferSpec * spec)
+{
+  GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static gboolean
+gst_sdrjfm_src_unprepare (GstAudioSrc * asrc)
+{
+  GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static guint
+gst_sdrjfm_src_read (GstAudioSrc * asrc, gpointer data, guint length,
+    GstClockTime * timestamp)
+{
+  GstSdrjfmSrc *self =  GST_SDRJFM_SRC (asrc);
+}
+
+static guint
+gst_sdrjfm_src_delay (GstAudioSrc * asrc)
+{
+  GstSdrjfmSrc *self =  GST_SDRJFM_SRC (asrc);
+}
+
+static void
+gst_sdrjfm_src_reset (GstAudioSrc * asrc)
+{
+  GST_FIXME_OBJECT (asrc, "not implemented");
+}
+
+static void
+gst_sdrjfm_src_dispose (GObject * object)
+{
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_sdrjfm_src_finalize (GstSdrjfmSrc * self)
+{
+  G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (self));
+}
+
+static void
+gst_sdrjfm_src_init (GstSdrjfmSrc * self)
+{
+  GstAudioBaseSrc *basrc = GST_AUDIO_BASE_SRC (self);
+
+  self->frequency = DEFAULT_FREQUENCY;
+
+  basrc->latency_time = 132000; /* base on buffer size */
+  basrc->buffer_time = 8 * basrc->latency_time;
+
+  gst_audio_base_src_set_provide_clock (basrc, FALSE);
+}
+
+static void
+gst_sdrjfm_src_class_init (GstSdrjfmSrcClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstAudioSrcClass *gstaudiosrc_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstaudiosrc_class = (GstAudioSrcClass *) klass;
+
+  gobject_class->dispose = gst_sdrjfm_src_dispose;
+  gobject_class->finalize = (GObjectFinalizeFunc) gst_sdrjfm_src_finalize;
+  gobject_class->get_property = gst_sdrjfm_src_get_property;
+  gobject_class->set_property = gst_sdrjfm_src_set_property;
+
+
+  gstaudiosrc_class->open = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_open);
+  gstaudiosrc_class->prepare = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_prepare);
+  gstaudiosrc_class->unprepare = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_unprepare);
+  gstaudiosrc_class->close = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_close);
+  gstaudiosrc_class->read = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_read);
+  gstaudiosrc_class->delay = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_delay);
+  gstaudiosrc_class->reset = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_reset);
+
+  g_object_class_install_property (gobject_class, PROP_FREQUENCY,
+      g_param_spec_int ("frequency", "Frequency",
+          "Frequency to receive", 0, G_MAXINT, DEFAULT_FREQUENCY,
+          G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_set_static_metadata (gstelement_class, "FM Radio Source (SDR-J)",
+      "Source/Audio",
+      "Capture and demodulate FM radio",
+      "Collabora <info@collabora.com>");
+
+  gst_element_class_add_pad_template (gstelement_class,
+      gst_static_pad_template_get (&sdrjfmsrc_src_factory));
+}
+
diff --git a/src/gstsdrjfmsrc.h b/src/gstsdrjfmsrc.h
new file mode 100644
index 0000000..83340ad
--- /dev/null
+++ b/src/gstsdrjfmsrc.h
@@ -0,0 +1,55 @@
+/* GStreamer
+ * Copyright (C) Collabora Ltd. <info@collabora.com>
+ *
+ * gstsdrjfmsrc.h:
+ *
+ * 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., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_SDRJFM_SRC_H__
+#define __GST_SDRJFM_SRC_H__
+
+#include <gst/gst.h>
+#include <gst/audio/gstaudiosrc.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_SDRJFM_SRC           (gst_sdrjfm_src_get_type())
+#define GST_SDRJFM_SRC(obj)           (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SDRJFM_SRC,GstSdrjfmSrc))
+#define GST_SDRJFM_SRC_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SDRJFM_SRC,GstSdrjfmSrcClass))
+#define GST_IS_SDRJFM_SRC(obj)        (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SDRJFM_SRC))
+#define GST_IS_SDRJFM_SRC_CLASS(klas) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SDRJFM_SRC))
+
+typedef struct _GstSdrjfmSrc GstSdrjfmSrc;
+typedef struct _GstSdrjfmSrcClass GstSdrjfmSrcClass;
+
+struct _GstSdrjfmSrc {
+  GstAudioSrc    src;
+
+};
+
+struct _GstSdrjfmSrcClass {
+  GstAudioSrcClass parent_class;
+
+  gint frequency;
+
+};
+
+GType gst_sdrjfm_src_get_type(void);
+
+G_END_DECLS
+
+#endif /* __GST_SDRJFM_SRC_H__ */
diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 0000000..c6fca44
--- /dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1,9 @@
+TESTS = tune.sh
+TESTS_ENVIRONMENT = GST_PLUGIN_PATH="$(top_builddir)/src/.libs"
+
+noinst_PROGRAMS = tune
+
+tune_SOURCES = tune.c
+tune_CFLAGS= $(GST_CFLAGS)
+tune_LDADD= $(GST_LIBS)
+
diff --git a/tests/tune.c b/tests/tune.c
new file mode 100644
index 0000000..93b8687
--- /dev/null
+++ b/tests/tune.c
@@ -0,0 +1,204 @@
+#include <glib.h>
+#include <gst/gst.h>
+
+GST_DEBUG_CATEGORY (srdjrm_debug);
+#define GST_CAT_DEFAULT srdjrm_debug
+
+#define MIN_FREQ  88100000
+#define MAX_FREQ 108100000
+
+typedef struct _TestData TestData;
+struct _TestData
+{
+  GstElement *pipeline;
+  GstElement *fmsrc;
+  void (*playing_cb) (TestData*);
+  void (*freq_changed_cb) (TestData*,gint);
+  gint timeout;
+  GMainLoop *loop;
+  gint freqs[10];
+  gint idx;
+  gint target_freq;
+};
+
+static gboolean
+bus_cb (GstBus *bus, GstMessage *message, gpointer user_data)
+{
+  TestData *data = user_data;
+  GError *error = NULL;
+
+  switch (message->type) {
+    case GST_MESSAGE_STATE_CHANGED:
+      if (GST_MESSAGE_SRC (message) == GST_OBJECT (data->pipeline)) {
+        GstState state;
+        gst_message_parse_state_changed (message, NULL, &state, NULL);
+        if (state == GST_STATE_PLAYING && data->playing_cb)
+          data->playing_cb (data);
+      }
+      break;
+
+    case GST_MESSAGE_ELEMENT:
+      if (GST_MESSAGE_SRC (message) == GST_OBJECT (data->fmsrc)) {
+        const GstStructure *s = gst_message_get_structure (message);
+
+        g_assert (gst_structure_has_name (s, "srdjrmsrc-frequency-changed"));
+        g_assert (gst_structure_has_field_typed (s, "frequency", G_TYPE_INT));
+
+        if (data->freq_changed_cb) {
+          gint freq;
+          gst_structure_get_int (s, "frequency", &freq);
+
+          g_assert_cmpint (freq, >=, MIN_FREQ);
+          g_assert_cmpint (freq, <=, MAX_FREQ);
+
+          data->freq_changed_cb (data, freq);
+        }
+      }
+      break;
+
+    case GST_MESSAGE_ERROR:
+      gst_message_parse_error (message, &error, NULL);
+      g_assert_no_error (error);
+      break;
+
+    case GST_MESSAGE_WARNING:
+      gst_message_parse_warning (message, &error, NULL);
+      g_assert_no_error (error);
+      break;
+
+    default:
+      break;
+  }
+
+  return TRUE;
+}
+
+static TestData *
+tearup (gint freq, void (*playing_cb) (TestData*),
+    void (*freq_changed_cb) (TestData*,gint))
+{
+  GError *error = NULL;
+  TestData *data = g_slice_new0 (TestData);
+  GstBus *bus;
+
+  data->pipeline =
+      gst_parse_launch ("srdjrmsrc name=fmsrc ! audioresample ! alsasink",
+      &error);
+  g_assert_no_error (error);
+  g_assert_nonnull (data->pipeline);
+
+  data->fmsrc = gst_bin_get_by_name (GST_BIN (data->pipeline), "fmsrc");
+  g_assert_nonnull (data->fmsrc);
+
+  g_object_set (data->fmsrc,
+      "frequency", freq,
+      NULL);
+
+  data->timeout = 20;
+  data->playing_cb = playing_cb;
+  data->freq_changed_cb = freq_changed_cb;
+
+  bus = gst_pipeline_get_bus (GST_PIPELINE (data->pipeline));
+  gst_bus_add_watch (bus, bus_cb, data);
+  g_object_unref (bus);
+
+  data->loop = g_main_loop_new (NULL, FALSE);
+
+  gst_element_set_state (data->pipeline, GST_STATE_PLAYING);
+
+  return data;
+}
+
+static void
+teardown (TestData *data)
+{
+  gst_element_set_state (data->pipeline, GST_STATE_NULL);
+  g_object_unref (data->fmsrc);
+  g_object_unref (data->pipeline);
+  g_main_loop_unref (data->loop);
+  g_slice_free (TestData, data);
+}
+
+static gboolean
+test_timed_out_cb (gpointer user_data)
+{
+  g_assert_false ("Test timed out");
+  return FALSE;
+}
+
+static void
+test_run (TestData *data)
+{
+  guint timeout;
+
+  timeout = g_timeout_add_seconds (data->timeout, test_timed_out_cb, data);
+  g_main_loop_run (data->loop);
+  g_source_remove (timeout);
+
+  teardown (data);
+}
+
+static void
+test_done (TestData *data)
+{
+  g_main_loop_quit (data->loop);
+}
+
+static void
+test_tune_playing_cb (TestData *data)
+{
+  data->freqs[0] =  96700000;
+  data->freqs[1] =  93300000;
+  data->freqs[2] = 105900000;
+  data->freqs[3] =  88900000;
+  data->freqs[4] = 0;
+  //data->freqs[1] = 107600000;
+  //data->freqs[5] = 107600000;
+  //data->freqs[6] = 0;
+
+  data->idx = 0;
+  data->target_freq = data->freqs[0];
+  g_object_set (data->fmsrc, "frequency", data->target_freq, NULL);
+
+  GST_DEBUG_OBJECT (data->fmsrc, "Set frequency to %d", data->target_freq);
+}
+
+static void
+test_tune_freq_changed_cb (TestData *data, gint frequency)
+{
+  g_assert_cmpint (frequency, ==, data->target_freq);
+
+  data->target_freq = data->freqs[++(data->idx)];
+
+  if (data->target_freq == 0)
+    {
+      GST_DEBUG_OBJECT (data->fmsrc, "Tune test completed");
+      test_done (data);
+    }
+  else
+    g_object_set (data->fmsrc, "frequency", data->target_freq, NULL);
+}
+
+static void
+test_tune ()
+{
+  GST_DEBUG ("Starting tune test");
+  TestData *data = tearup (96700000,
+      test_tune_playing_cb,
+      test_tune_freq_changed_cb);
+  test_run (data);
+}
+
+gint
+main (gint argc, gchar **argv)
+{
+  gst_init (&argc, &argv);
+
+  GST_DEBUG_CATEGORY_INIT (srdjrm_debug, "srdjrm", 0, "SDR-J FM plugin");
+  GST_DEBUG ("Running test");
+
+  g_test_init (&argc, &argv, NULL);
+  g_test_add_func ("/tune/live", test_tune);
+  g_test_run ();
+  return 0;
+}
diff --git a/tests/tune.sh b/tests/tune.sh
new file mode 100755
index 0000000..4f14315
--- /dev/null
+++ b/tests/tune.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+#exec ./tune --gst-debug=srdjrm:5 --gst-debug-level=5  --gst-debug-no-color
+exec ./tune --gst-debug=srdjrm:8 --gst-debug-no-color