add tests to gst-plugins-base add a volume element test clean up volume a little more for basetransform

Original commit message from CVS:
add tests to gst-plugins-base
add a volume element test
clean up volume a little more for basetransform

12 files changed, 845 insertions, 114 deletions

diff --git a/Makefile.am b/Makefile.am
index a2e937841..67b3ddf6b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -28,6 +28,7 @@ SUBDIRS = 			\
 	$(SUBDIRS_EXAMPLES) 	\
 	tools 			\
 	$(SUBDIRS_GCONF) 	\
+	check			\
 	docs			\
 	po 			\
 	common 			\
@@ -35,6 +36,7 @@ SUBDIRS = 			\
 	pkgconfig
 
 DIST_SUBDIRS = 			\
+	check			\
 	docs			\
 	gst-libs		\
 	gst sys ext		\
diff --git a/check/.gitignore b/check/.gitignore
new file mode 100644
index 000000000..5d45c6c3f
--- /dev/null
+++ b/check/.gitignore
@@ -0,0 +1 @@
+test-registry.xml
diff --git a/check/Makefile.am b/check/Makefile.am
new file mode 100644
index 000000000..52c17ba3c
--- /dev/null
+++ b/check/Makefile.am
@@ -0,0 +1,31 @@
+include $(top_srcdir)/common/check.mak
+
+CHECK_REGISTRY=$(top_builddir)/check/test-registry.xml
+
+TESTS_ENVIRONMENT=\
+	GST_REGISTRY=$(CHECK_REGISTRY)
+
+# ths core dumps of some machines have PIDs appended
+CLEANFILES = core.* test-registry.xml
+
+clean-local: clean-local-check
+
+$(CHECK_REGISTRY):
+	$(TESTS_ENVIRONMENT)					\
+	GST_PLUGIN_PATH_ONLY=yes				\
+	GST_PLUGIN_PATH=$(top_builddir)/gst			\
+	$(GST_TOOLS_DIR)/gst-register-@GST_MAJORMINOR@
+
+TESTS = $(GST_TOOLS_DIR)/gst-register-@GST_MAJORMINOR@		\
+	$(check_PROGRAMS)
+
+check_PROGRAMS = elements/volume
+
+AM_CFLAGS = $(GST_OBJ_CFLAGS) $(GST_CHECK_CFLAGS)
+LDADD = $(GST_OBJ_LIBS) $(GST_CHECK_LIBS)
+
+# valgrind testing
+VALGRIND_TESTS_DISABLE = 			\
+	$(GST_TOOLS_DIR)/gst-register-@GST_MAJORMINOR@
+
+SUPPRESSIONS = $(top_srcdir)/common/gst.supp
diff --git a/check/elements/.gitignore b/check/elements/.gitignore
new file mode 100644
index 000000000..b638b06eb
--- /dev/null
+++ b/check/elements/.gitignore
@@ -0,0 +1,2 @@
+.dirstamp
+volume
diff --git a/check/elements/volume.c b/check/elements/volume.c
new file mode 100644
index 000000000..b2fcc2dac
--- /dev/null
+++ b/check/elements/volume.c
@@ -0,0 +1,319 @@
+/* GStreamer
+ *
+ * unit test for volume
+ *
+ * Copyright (C) <2005> 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.
+ */
+
+#include <unistd.h>
+
+#include <gst/check/gstcheck.h>
+
+GList *buffers = NULL;
+gboolean have_eos = FALSE;
+
+/* For ease of programming we use globals to keep refs for our floating
+ * src and sink pads we create; otherwise we always have to do get_pad,
+ * get_peer, and then remove references in every test function */
+GstPad *mysrcpad, *mysinkpad;
+
+
+#define VOLUME_CAPS_TEMPLATE_STRING	\
+    "audio/x-raw-int, "			\
+    "channels = (int) [ 1, MAX ], "	\
+    "rate = (int) [ 1,  MAX ], "	\
+    "endianness = (int) BYTE_ORDER, "	\
+    "width = (int) 16, "		\
+    "depth = (int) 16, "		\
+    "signed = (bool) TRUE"
+
+#define VOLUME_CAPS_STRING		\
+    "audio/x-raw-int, "			\
+    "channels = (int) 1, "		\
+    "rate = (int) 44100, "		\
+    "endianness = (int) BYTE_ORDER, "	\
+    "width = (int) 16, "		\
+    "depth = (int) 16, "		\
+    "signed = (bool) TRUE"
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VOLUME_CAPS_TEMPLATE_STRING)
+    );
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VOLUME_CAPS_TEMPLATE_STRING)
+    );
+
+GstFlowReturn
+chain_func (GstPad * pad, GstBuffer * buffer)
+{
+  GST_DEBUG ("chain_func: received buffer %p", buffer);
+  buffers = g_list_append (buffers, buffer);
+
+  return GST_FLOW_OK;
+}
+
+gboolean
+event_func (GstPad * pad, GstEvent * event)
+{
+  if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
+    /* we take the lock here because it's good practice to so, even though
+     * no buffers will be pushed anymore anyway */
+    GST_STREAM_LOCK (pad);
+    have_eos = TRUE;
+    GST_STREAM_UNLOCK (pad);
+    gst_event_unref (event);
+    return TRUE;
+  }
+
+  gst_event_unref (event);
+  return FALSE;
+}
+
+GstElement *
+setup_volume ()
+{
+  GstElement *volume;
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG ("setup_volume");
+
+  volume = gst_element_factory_make ("volume", "volume");
+  fail_if (volume == NULL, "Could not create a volume");
+
+  /* sending pad */
+  mysrcpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (&srctemplate),
+      "src");
+  fail_if (mysrcpad == NULL, "Could not create a mysrcpad");
+  ASSERT_OBJECT_REFCOUNT (mysrcpad, "mysrcpad", 1);
+
+  sinkpad = gst_element_get_pad (volume, "sink");
+  fail_if (sinkpad == NULL, "Could not get source pad from volume");
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_pad_set_caps (mysrcpad, NULL);
+  fail_unless (gst_pad_link (mysrcpad, sinkpad) == GST_PAD_LINK_OK,
+      "Could not link source and volume sink pads");
+  gst_object_unref (sinkpad);   /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 1);
+
+  /* receiving pad */
+  mysinkpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (&sinktemplate),
+      "sink");
+  fail_if (mysinkpad == NULL, "Could not create a mysinkpad");
+
+  srcpad = gst_element_get_pad (volume, "src");
+  fail_if (srcpad == NULL, "Could not get source pad from volume");
+  gst_pad_set_caps (mysinkpad, NULL);
+  gst_pad_set_chain_function (mysinkpad, chain_func);
+  gst_pad_set_event_function (mysinkpad, event_func);
+
+  fail_unless (gst_pad_link (srcpad, mysinkpad) == GST_PAD_LINK_OK,
+      "Could not link volume source and mysink pads");
+  gst_object_unref (srcpad);    /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 1);
+
+  return volume;
+}
+
+void
+cleanup_volume (GstElement * volume)
+{
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG ("cleanup_volume");
+
+  fail_unless (gst_element_set_state (volume, GST_STATE_NULL) ==
+      GST_STATE_SUCCESS, "could not set to null");
+  ASSERT_OBJECT_REFCOUNT (volume, "volume", 1);
+
+  /* clean up floating src pad */
+  sinkpad = gst_element_get_pad (volume, "sink");
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+
+  gst_pad_unlink (mysrcpad, sinkpad);
+
+  /* pad refs held by both creator and this function (through _get) */
+  ASSERT_OBJECT_REFCOUNT (mysrcpad, "srcpad", 1);
+  gst_object_unref (mysrcpad);
+  mysrcpad = NULL;
+
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_object_unref (sinkpad);
+  /* one more ref is held by volume itself */
+
+  /* clean up floating sink pad */
+  srcpad = gst_element_get_pad (volume, "src");
+  gst_pad_unlink (srcpad, mysinkpad);
+
+  /* pad refs held by both creator and this function (through _get) */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 2);
+  gst_object_unref (srcpad);
+  /* one more ref is held by volume itself */
+
+  ASSERT_OBJECT_REFCOUNT (mysinkpad, "mysinkpad", 1);
+  gst_object_unref (mysinkpad);
+  mysinkpad = NULL;
+
+  ASSERT_OBJECT_REFCOUNT (volume, "volume", 1);
+  gst_object_unref (volume);
+}
+
+GST_START_TEST (test_unity)
+{
+  GstElement *volume;
+  GstBuffer *inbuffer, *outbuffer;
+  gint16 in[2] = { 16384, -256 };
+
+  volume = setup_volume ();
+  fail_unless (gst_element_set_state (volume,
+          GST_STATE_PLAYING) == GST_STATE_SUCCESS, "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  gst_buffer_set_caps (inbuffer, gst_caps_from_string (VOLUME_CAPS_STRING));
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  /* pushing gives away my reference ... */
+  gst_pad_push (mysrcpad, inbuffer);
+  /* ... but it ends up being collected on the global buffer list */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless (g_list_length (buffers) == 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 4) == 0);
+
+  /* cleanup */
+  cleanup_volume (volume);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_half)
+{
+  GstElement *volume;
+  GstBuffer *inbuffer;
+  GstBuffer *outbuffer;
+  gint16 in[2] = { 16384, -256 };
+  gint16 out[2] = { 8192, -128 };
+
+  volume = setup_volume ();
+  g_object_set (G_OBJECT (volume), "volume", 0.5, NULL);
+  fail_unless (gst_element_set_state (volume,
+          GST_STATE_PLAYING) == GST_STATE_SUCCESS, "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 4) == 0);
+  gst_buffer_set_caps (inbuffer, gst_caps_from_string (VOLUME_CAPS_STRING));
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  /* FIXME: reffing the inbuffer should make the transformation not be
+   * inplace
+   gst_buffer_ref (inbuffer);
+   */
+
+  /* pushing gives away my reference ... */
+  gst_pad_push (mysrcpad, inbuffer);
+  /* ... but it ends up being modified inplace and
+   * collected on the global buffer list */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless (g_list_length (buffers) == 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 4) == 0);
+
+  /* cleanup */
+  cleanup_volume (volume);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_double)
+{
+  GstElement *volume;
+  GstBuffer *inbuffer;
+  GstBuffer *outbuffer;
+  gint16 in[2] = { 16384, -256 };
+  gint16 out[2] = { 32767, -512 };      /* notice the clamped sample */
+
+  volume = setup_volume ();
+  g_object_set (G_OBJECT (volume), "volume", 2.0, NULL);
+  fail_unless (gst_element_set_state (volume,
+          GST_STATE_PLAYING) == GST_STATE_SUCCESS, "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 4) == 0);
+  gst_buffer_set_caps (inbuffer, gst_caps_from_string (VOLUME_CAPS_STRING));
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  /* FIXME: reffing the inbuffer should make the transformation not be
+   * inplace
+   gst_buffer_ref (inbuffer);
+   */
+
+  /* pushing gives away my reference ... */
+  gst_pad_push (mysrcpad, inbuffer);
+  /* ... but it ends up being modified inplace and
+   * collected on the global buffer list */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless (g_list_length (buffers) == 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 4) == 0);
+
+  /* cleanup */
+  cleanup_volume (volume);
+}
+
+GST_END_TEST;
+
+
+Suite *
+volume_suite (void)
+{
+  Suite *s = suite_create ("volume");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_unity);
+  tcase_add_test (tc_chain, test_half);
+  tcase_add_test (tc_chain, test_double);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = volume_suite ();
+  SRunner *sr = srunner_create (s);
+
+  gst_check_init (&argc, &argv);
+
+  srunner_run_all (sr, CK_NORMAL);
+  nf = srunner_ntests_failed (sr);
+  srunner_free (sr);
+
+  return nf;
+}
diff --git a/common b/common
-Subproject 8ff526a316f9b576e727b8e32cba0a53cdec07a
+Subproject 4cc6f465857331531a09aff0a23dc0b133e7f66
diff --git a/configure.ac b/configure.ac
index eacaee216..0cf63a275 100644
--- a/configure.ac
+++ b/configure.ac
@@ -238,6 +238,12 @@ fi
 
 AC_SUBST(GST_BASE_LIBS)
 
+PKG_CHECK_MODULES(GST_CHECK, gstreamer-check-$GST_MAJORMINOR >= $GST_REQ,
+  HAVE_GST_CHECK="yes", HAVE_GST_CHECK="no")
+
+AC_PATH_PROG(VALGRIND_PATH, valgrind, no)
+AM_CONDITIONAL(HAVE_VALGRIND, test ! "x$VALGRIND_PATH" = "xno")
+
 dnl Determine endianness
 AC_C_BIGENDIAN
 
@@ -927,6 +933,7 @@ gconf/gstreamer.schemas
 pkgconfig/Makefile
 pkgconfig/gstreamer-plugins-base.pc
 pkgconfig/gstreamer-plugins-base-uninstalled.pc
+check/Makefile
 docs/Makefile
 docs/libs/Makefile
 docs/plugins/Makefile
diff --git a/gst/volume/gstvolume.c b/gst/volume/gstvolume.c
index 8c70d43d3..e41fe563f 100644
--- a/gst/volume/gstvolume.c
+++ b/gst/volume/gstvolume.c
@@ -1,6 +1,7 @@
 /* -*- c-basic-offset: 2 -*-
  * GStreamer
  * Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) 2005 Andy Wingo <wingo@pobox.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -101,28 +102,27 @@ static GstStaticPadTemplate volume_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
 static void gst_volume_interface_init (GstImplementsInterfaceClass * klass);
 static void gst_volume_mixer_init (GstMixerClass * iface);
 
-#define _init_interfaces(type) 							\
-  {                                                                             \
-    static const GInterfaceInfo voliface_info = {                               \
-      (GInterfaceInitFunc) gst_volume_interface_init,                           \
-      NULL,                                                                     \
-      NULL                                                                      \
-    };                                                                          \
-    static const GInterfaceInfo volmixer_info = {                               \
-      (GInterfaceInitFunc) gst_volume_mixer_init,                               \
-      NULL,                                                                     \
-      NULL                                                                      \
-    };                                                                          \
-                                                                                \
-    g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,           \
-        &voliface_info);                                                        \
-    g_type_add_interface_static (type, GST_TYPE_MIXER, &volmixer_info);         \
+#define _init_interfaces(type)						\
+  {                                                                     \
+    static const GInterfaceInfo voliface_info = {                       \
+      (GInterfaceInitFunc) gst_volume_interface_init,                   \
+      NULL,                                                             \
+      NULL                                                              \
+    };                                                                  \
+    static const GInterfaceInfo volmixer_info = {                       \
+      (GInterfaceInitFunc) gst_volume_mixer_init,                       \
+      NULL,                                                             \
+      NULL                                                              \
+    };                                                                  \
+                                                                        \
+    g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,   \
+        &voliface_info);                                                \
+    g_type_add_interface_static (type, GST_TYPE_MIXER, &volmixer_info); \
   }
 
 GST_BOILERPLATE_FULL (GstVolume, gst_volume, GstBaseTransform,
     GST_TYPE_BASE_TRANSFORM, _init_interfaces);
 
-
 static void volume_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
 static void volume_get_property (GObject * object, guint prop_id,
@@ -132,9 +132,13 @@ static void volume_update_mute (const GValue * value, gpointer data);
 
 static GstFlowReturn volume_transform (GstBaseTransform * base,
     GstBuffer * inbuf, GstBuffer * outbuf);
-static void volume_process_float (GstVolume * filter, GstClockTime tstamp,
+gboolean volume_set_caps (GstBaseTransform * base, GstCaps * incaps,
+    GstCaps * outcaps);
+
+
+static void volume_process_float (GstVolume * this, GstClockTime tstamp,
     gpointer bytes, gint n_bytes);
-static void volume_process_int16 (GstVolume * filter, GstClockTime tstamp,
+static void volume_process_int16 (GstVolume * this, GstClockTime tstamp,
     gpointer bytes, gint n_bytes);
 
 static gboolean
@@ -153,61 +157,61 @@ gst_volume_interface_init (GstImplementsInterfaceClass * klass)
 static const GList *
 gst_volume_list_tracks (GstMixer * mixer)
 {
-  GstVolume *filter = GST_VOLUME (mixer);
+  GstVolume *this = GST_VOLUME (mixer);
 
-  g_return_val_if_fail (filter != NULL, NULL);
-  g_return_val_if_fail (GST_IS_VOLUME (filter), NULL);
+  g_return_val_if_fail (this != NULL, NULL);
+  g_return_val_if_fail (GST_IS_VOLUME (this), NULL);
 
-  return filter->tracklist;
+  return this->tracklist;
 }
 
 static void
 gst_volume_set_volume (GstMixer * mixer, GstMixerTrack * track, gint * volumes)
 {
-  GstVolume *filter = GST_VOLUME (mixer);
+  GstVolume *this = GST_VOLUME (mixer);
 
-  g_return_if_fail (filter != NULL);
-  g_return_if_fail (GST_IS_VOLUME (filter));
+  g_return_if_fail (this != NULL);
+  g_return_if_fail (GST_IS_VOLUME (this));
 
-  filter->volume_f = (gfloat) volumes[0] / VOLUME_STEPS;
-  filter->volume_i = filter->volume_f * VOLUME_UNITY_INT;
+  this->volume_f = (gfloat) volumes[0] / VOLUME_STEPS;
+  this->volume_i = this->volume_f * VOLUME_UNITY_INT;
 
-  if (filter->mute) {
-    filter->real_vol_f = 0.0;
-    filter->real_vol_i = 0;
+  if (this->mute) {
+    this->real_vol_f = 0.0;
+    this->real_vol_i = 0;
   } else {
-    filter->real_vol_f = filter->volume_f;
-    filter->real_vol_i = filter->volume_i;
+    this->real_vol_f = this->volume_f;
+    this->real_vol_i = this->volume_i;
   }
 }
 
 static void
 gst_volume_get_volume (GstMixer * mixer, GstMixerTrack * track, gint * volumes)
 {
-  GstVolume *filter = GST_VOLUME (mixer);
+  GstVolume *this = GST_VOLUME (mixer);
 
-  g_return_if_fail (filter != NULL);
-  g_return_if_fail (GST_IS_VOLUME (filter));
+  g_return_if_fail (this != NULL);
+  g_return_if_fail (GST_IS_VOLUME (this));
 
-  volumes[0] = (gint) filter->volume_f * VOLUME_STEPS;
+  volumes[0] = (gint) this->volume_f * VOLUME_STEPS;
 }
 
 static void
 gst_volume_set_mute (GstMixer * mixer, GstMixerTrack * track, gboolean mute)
 {
-  GstVolume *filter = GST_VOLUME (mixer);
+  GstVolume *this = GST_VOLUME (mixer);
 
-  g_return_if_fail (filter != NULL);
-  g_return_if_fail (GST_IS_VOLUME (filter));
+  g_return_if_fail (this != NULL);
+  g_return_if_fail (GST_IS_VOLUME (this));
 
-  filter->mute = mute;
+  this->mute = mute;
 
-  if (filter->mute) {
-    filter->real_vol_f = 0.0;
-    filter->real_vol_i = 0;
+  if (this->mute) {
+    this->real_vol_f = 0.0;
+    this->real_vol_i = 0;
   } else {
-    filter->real_vol_f = filter->volume_f;
-    filter->real_vol_i = filter->volume_i;
+    this->real_vol_f = this->volume_f;
+    this->real_vol_i = this->volume_i;
   }
 }
 
@@ -269,19 +273,21 @@ gst_volume_class_init (GstVolumeClass * klass)
 
   GST_BASE_TRANSFORM_CLASS (klass)->transform =
       GST_DEBUG_FUNCPTR (volume_transform);
+  GST_BASE_TRANSFORM_CLASS (klass)->set_caps =
+      GST_DEBUG_FUNCPTR (volume_set_caps);
 }
 
 static void
-gst_volume_init (GstVolume * filter)
+gst_volume_init (GstVolume * this)
 {
   GstMixerTrack *track = NULL;
 
-  filter->mute = FALSE;
-  filter->volume_i = VOLUME_UNITY_INT;
-  filter->volume_f = 1.0;
-  filter->real_vol_i = VOLUME_UNITY_INT;
-  filter->real_vol_f = 1.0;
-  filter->tracklist = NULL;
+  this->mute = FALSE;
+  this->volume_i = VOLUME_UNITY_INT;
+  this->volume_f = 1.0;
+  this->real_vol_i = VOLUME_UNITY_INT;
+  this->real_vol_f = 1.0;
+  this->tracklist = NULL;
 
   track = g_object_new (GST_TYPE_MIXER_TRACK, NULL);
 
@@ -291,50 +297,26 @@ gst_volume_init (GstVolume * filter)
     track->min_volume = 0;
     track->max_volume = VOLUME_STEPS;
     track->flags = GST_MIXER_TRACK_SOFTWARE;
-    filter->tracklist = g_list_append (filter->tracklist, track);
+    this->tracklist = g_list_append (this->tracklist, track);
   }
 }
 
+/* based on the caps' structure, install the correct volume_process method */
 static void
-volume_typefind (GstVolume * filter, const GstStructure * structure)
+volume_funcfind (GstVolume * this, const GstStructure * structure)
 {
   const gchar *mimetype;
 
   mimetype = gst_structure_get_name (structure);
 
   if (strcmp (mimetype, "audio/x-raw-int") == 0)
-    filter->process = volume_process_int16;
+    this->process = volume_process_int16;
   else if (strcmp (mimetype, "audio/x-raw-float") == 0)
-    filter->process = volume_process_float;
-}
-
-static GstFlowReturn
-volume_transform (GstBaseTransform * base, GstBuffer * inbuf,
-    GstBuffer * outbuf)
-{
-  GstVolume *filter = GST_VOLUME (base);
-
-  if (G_UNLIKELY (!filter->process)) {
-    GstCaps *caps = GST_BUFFER_CAPS (inbuf);
-
-    if (gst_caps_get_size (caps) == 1)
-      volume_typefind (filter, gst_caps_get_structure (caps, 0));
-
-    if (!filter->process) {
-      GST_ELEMENT_ERROR (filter, CORE, NEGOTIATION,
-          ("Invalid caps on first buffer"), NULL);
-      return GST_FLOW_UNEXPECTED;
-    }
-  }
-
-  filter->process (filter, GST_BUFFER_TIMESTAMP (outbuf),
-      GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
-
-  return GST_FLOW_OK;
+    this->process = volume_process_float;
 }
 
 static void
-volume_process_float (GstVolume * filter, GstClockTime tstamp,
+volume_process_float (GstVolume * this, GstClockTime tstamp,
     gpointer bytes, gint n_bytes)
 {
   gfloat *data;
@@ -344,12 +326,12 @@ volume_process_float (GstVolume * filter, GstClockTime tstamp,
   num_samples = n_bytes / sizeof (gfloat);
 
   for (i = 0; i < num_samples; i++) {
-    *data++ *= filter->real_vol_f;
+    *data++ *= this->real_vol_f;
   }
 }
 
 static void
-volume_process_int16 (GstVolume * filter, GstClockTime tstamp,
+volume_process_int16 (GstVolume * this, GstClockTime tstamp,
     gpointer bytes, gint n_bytes)
 {
   gint16 *data;
@@ -358,14 +340,14 @@ volume_process_int16 (GstVolume * filter, GstClockTime tstamp,
   data = (gint16 *) bytes;
   num_samples = n_bytes / sizeof (gint16);
 
-  /* need... liboil... */
+  /* FIXME: need... liboil... */
   /* only clamp if the gain is greater than 1.0 */
-  if (filter->real_vol_i > VOLUME_UNITY_INT) {
+  if (this->real_vol_i > VOLUME_UNITY_INT) {
     for (i = 0; i < num_samples; i++) {
       /* we use bitshifting instead of dividing by UNITY_INT for speed */
       val = (gint) * data;
       *data++ =
-          (gint16) CLAMP ((filter->real_vol_i *
+          (gint16) CLAMP ((this->real_vol_i *
               val) >> VOLUME_UNITY_BIT_SHIFT, VOLUME_MIN_INT16,
           VOLUME_MAX_INT16);
     }
@@ -373,48 +355,82 @@ volume_process_int16 (GstVolume * filter, GstClockTime tstamp,
     for (i = 0; i < num_samples; i++) {
       /* we use bitshifting instead of dividing by UNITY_INT for speed */
       val = (gint) * data;
-      *data++ = (gint16) ((filter->real_vol_i * val) >> VOLUME_UNITY_BIT_SHIFT);
+      *data++ = (gint16) ((this->real_vol_i * val) >> VOLUME_UNITY_BIT_SHIFT);
     }
   }
 }
 
+/* GstBaseTransform vmethod implementations */
+
+/* get notified of caps and plug in the correct process function */
+gboolean
+volume_set_caps (GstBaseTransform * base, GstCaps * incaps, GstCaps * outcaps)
+{
+  GstVolume *this = GST_VOLUME (base);
+
+  volume_funcfind (this, gst_caps_get_structure (incaps, 0));
+
+  if (!this->process) {
+    GST_ELEMENT_ERROR (this, CORE, NEGOTIATION,
+        ("Invalid incoming caps: %" GST_PTR_FORMAT, incaps), NULL);
+    return FALSE;
+  }
+  return TRUE;
+}
+
+/* call the plugged-in process function for this instance
+ * needs to be done with this indirection since volume_transform is
+ * a class-global method
+ */
+static GstFlowReturn
+volume_transform (GstBaseTransform * base, GstBuffer * inbuf,
+    GstBuffer * outbuf)
+{
+  GstVolume *this = GST_VOLUME (base);
+
+  this->process (this, GST_BUFFER_TIMESTAMP (outbuf),
+      GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
+
+  return GST_FLOW_OK;
+}
+
 static void
 volume_update_mute (const GValue * value, gpointer data)
 {
-  GstVolume *filter = (GstVolume *) data;
+  GstVolume *this = (GstVolume *) data;
 
-  g_return_if_fail (GST_IS_VOLUME (filter));
+  g_return_if_fail (GST_IS_VOLUME (this));
 
   if (G_VALUE_HOLDS_BOOLEAN (value)) {
-    filter->mute = g_value_get_boolean (value);
+    this->mute = g_value_get_boolean (value);
   } else if (G_VALUE_HOLDS_INT (value)) {
-    filter->mute = (g_value_get_int (value) == 1);
+    this->mute = (g_value_get_int (value) == 1);
   }
 
-  if (filter->mute) {
-    filter->real_vol_f = 0.0;
-    filter->real_vol_i = 0;
+  if (this->mute) {
+    this->real_vol_f = 0.0;
+    this->real_vol_i = 0;
   } else {
-    filter->real_vol_f = filter->volume_f;
-    filter->real_vol_i = filter->volume_i;
+    this->real_vol_f = this->volume_f;
+    this->real_vol_i = this->volume_i;
   }
 }
 
 static void
 volume_update_volume (const GValue * value, gpointer data)
 {
-  GstVolume *filter = (GstVolume *) data;
+  GstVolume *this = (GstVolume *) data;
 
-  g_return_if_fail (GST_IS_VOLUME (filter));
+  g_return_if_fail (GST_IS_VOLUME (this));
 
-  filter->volume_f = g_value_get_double (value);
-  filter->volume_i = filter->volume_f * VOLUME_UNITY_INT;
-  if (filter->mute) {
-    filter->real_vol_f = 0.0;
-    filter->real_vol_i = 0;
+  this->volume_f = g_value_get_double (value);
+  this->volume_i = this->volume_f * VOLUME_UNITY_INT;
+  if (this->mute) {
+    this->real_vol_f = 0.0;
+    this->real_vol_i = 0;
   } else {
-    filter->real_vol_f = filter->volume_f;
-    filter->real_vol_i = filter->volume_i;
+    this->real_vol_f = this->volume_f;
+    this->real_vol_i = this->volume_i;
   }
 }
 
@@ -422,14 +438,14 @@ static void
 volume_set_property (GObject * object, guint prop_id, const GValue * value,
     GParamSpec * pspec)
 {
-  GstVolume *filter = GST_VOLUME (object);
+  GstVolume *this = GST_VOLUME (object);
 
   switch (prop_id) {
     case PROP_MUTE:
-      volume_update_mute (value, filter);
+      volume_update_mute (value, this);
       break;
     case PROP_VOLUME:
-      volume_update_volume (value, filter);
+      volume_update_volume (value, this);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -441,14 +457,14 @@ static void
 volume_get_property (GObject * object, guint prop_id, GValue * value,
     GParamSpec * pspec)
 {
-  GstVolume *filter = GST_VOLUME (object);
+  GstVolume *this = GST_VOLUME (object);
 
   switch (prop_id) {
     case PROP_MUTE:
-      g_value_set_boolean (value, filter->mute);
+      g_value_set_boolean (value, this->mute);
       break;
     case PROP_VOLUME:
-      g_value_set_double (value, filter->volume_f);
+      g_value_set_double (value, this->volume_f);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -467,4 +483,4 @@ GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
     GST_VERSION_MINOR,
     "volume",
     "element for controlling audio volume",
-    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)
+    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN);
diff --git a/tests/check/.gitignore b/tests/check/.gitignore
new file mode 100644
index 000000000..5d45c6c3f
--- /dev/null
+++ b/tests/check/.gitignore
@@ -0,0 +1 @@
+test-registry.xml
diff --git a/tests/check/Makefile.am b/tests/check/Makefile.am
new file mode 100644
index 000000000..52c17ba3c
--- /dev/null
+++ b/tests/check/Makefile.am
@@ -0,0 +1,31 @@
+include $(top_srcdir)/common/check.mak
+
+CHECK_REGISTRY=$(top_builddir)/check/test-registry.xml
+
+TESTS_ENVIRONMENT=\
+	GST_REGISTRY=$(CHECK_REGISTRY)
+
+# ths core dumps of some machines have PIDs appended
+CLEANFILES = core.* test-registry.xml
+
+clean-local: clean-local-check
+
+$(CHECK_REGISTRY):
+	$(TESTS_ENVIRONMENT)					\
+	GST_PLUGIN_PATH_ONLY=yes				\
+	GST_PLUGIN_PATH=$(top_builddir)/gst			\
+	$(GST_TOOLS_DIR)/gst-register-@GST_MAJORMINOR@
+
+TESTS = $(GST_TOOLS_DIR)/gst-register-@GST_MAJORMINOR@		\
+	$(check_PROGRAMS)
+
+check_PROGRAMS = elements/volume
+
+AM_CFLAGS = $(GST_OBJ_CFLAGS) $(GST_CHECK_CFLAGS)
+LDADD = $(GST_OBJ_LIBS) $(GST_CHECK_LIBS)
+
+# valgrind testing
+VALGRIND_TESTS_DISABLE = 			\
+	$(GST_TOOLS_DIR)/gst-register-@GST_MAJORMINOR@
+
+SUPPRESSIONS = $(top_srcdir)/common/gst.supp
diff --git a/tests/check/elements/.gitignore b/tests/check/elements/.gitignore
new file mode 100644
index 000000000..b638b06eb
--- /dev/null
+++ b/tests/check/elements/.gitignore
@@ -0,0 +1,2 @@
+.dirstamp
+volume
diff --git a/tests/check/elements/volume.c b/tests/check/elements/volume.c
new file mode 100644
index 000000000..b2fcc2dac
--- /dev/null
+++ b/tests/check/elements/volume.c
@@ -0,0 +1,319 @@
+/* GStreamer
+ *
+ * unit test for volume
+ *
+ * Copyright (C) <2005> 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.
+ */
+
+#include <unistd.h>
+
+#include <gst/check/gstcheck.h>
+
+GList *buffers = NULL;
+gboolean have_eos = FALSE;
+
+/* For ease of programming we use globals to keep refs for our floating
+ * src and sink pads we create; otherwise we always have to do get_pad,
+ * get_peer, and then remove references in every test function */
+GstPad *mysrcpad, *mysinkpad;
+
+
+#define VOLUME_CAPS_TEMPLATE_STRING	\
+    "audio/x-raw-int, "			\
+    "channels = (int) [ 1, MAX ], "	\
+    "rate = (int) [ 1,  MAX ], "	\
+    "endianness = (int) BYTE_ORDER, "	\
+    "width = (int) 16, "		\
+    "depth = (int) 16, "		\
+    "signed = (bool) TRUE"
+
+#define VOLUME_CAPS_STRING		\
+    "audio/x-raw-int, "			\
+    "channels = (int) 1, "		\
+    "rate = (int) 44100, "		\
+    "endianness = (int) BYTE_ORDER, "	\
+    "width = (int) 16, "		\
+    "depth = (int) 16, "		\
+    "signed = (bool) TRUE"
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VOLUME_CAPS_TEMPLATE_STRING)
+    );
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VOLUME_CAPS_TEMPLATE_STRING)
+    );
+
+GstFlowReturn
+chain_func (GstPad * pad, GstBuffer * buffer)
+{
+  GST_DEBUG ("chain_func: received buffer %p", buffer);
+  buffers = g_list_append (buffers, buffer);
+
+  return GST_FLOW_OK;
+}
+
+gboolean
+event_func (GstPad * pad, GstEvent * event)
+{
+  if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
+    /* we take the lock here because it's good practice to so, even though
+     * no buffers will be pushed anymore anyway */
+    GST_STREAM_LOCK (pad);
+    have_eos = TRUE;
+    GST_STREAM_UNLOCK (pad);
+    gst_event_unref (event);
+    return TRUE;
+  }
+
+  gst_event_unref (event);
+  return FALSE;
+}
+
+GstElement *
+setup_volume ()
+{
+  GstElement *volume;
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG ("setup_volume");
+
+  volume = gst_element_factory_make ("volume", "volume");
+  fail_if (volume == NULL, "Could not create a volume");
+
+  /* sending pad */
+  mysrcpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (&srctemplate),
+      "src");
+  fail_if (mysrcpad == NULL, "Could not create a mysrcpad");
+  ASSERT_OBJECT_REFCOUNT (mysrcpad, "mysrcpad", 1);
+
+  sinkpad = gst_element_get_pad (volume, "sink");
+  fail_if (sinkpad == NULL, "Could not get source pad from volume");
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_pad_set_caps (mysrcpad, NULL);
+  fail_unless (gst_pad_link (mysrcpad, sinkpad) == GST_PAD_LINK_OK,
+      "Could not link source and volume sink pads");
+  gst_object_unref (sinkpad);   /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 1);
+
+  /* receiving pad */
+  mysinkpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (&sinktemplate),
+      "sink");
+  fail_if (mysinkpad == NULL, "Could not create a mysinkpad");
+
+  srcpad = gst_element_get_pad (volume, "src");
+  fail_if (srcpad == NULL, "Could not get source pad from volume");
+  gst_pad_set_caps (mysinkpad, NULL);
+  gst_pad_set_chain_function (mysinkpad, chain_func);
+  gst_pad_set_event_function (mysinkpad, event_func);
+
+  fail_unless (gst_pad_link (srcpad, mysinkpad) == GST_PAD_LINK_OK,
+      "Could not link volume source and mysink pads");
+  gst_object_unref (srcpad);    /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 1);
+
+  return volume;
+}
+
+void
+cleanup_volume (GstElement * volume)
+{
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG ("cleanup_volume");
+
+  fail_unless (gst_element_set_state (volume, GST_STATE_NULL) ==
+      GST_STATE_SUCCESS, "could not set to null");
+  ASSERT_OBJECT_REFCOUNT (volume, "volume", 1);
+
+  /* clean up floating src pad */
+  sinkpad = gst_element_get_pad (volume, "sink");
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+
+  gst_pad_unlink (mysrcpad, sinkpad);
+
+  /* pad refs held by both creator and this function (through _get) */
+  ASSERT_OBJECT_REFCOUNT (mysrcpad, "srcpad", 1);
+  gst_object_unref (mysrcpad);
+  mysrcpad = NULL;
+
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_object_unref (sinkpad);
+  /* one more ref is held by volume itself */
+
+  /* clean up floating sink pad */
+  srcpad = gst_element_get_pad (volume, "src");
+  gst_pad_unlink (srcpad, mysinkpad);
+
+  /* pad refs held by both creator and this function (through _get) */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 2);
+  gst_object_unref (srcpad);
+  /* one more ref is held by volume itself */
+
+  ASSERT_OBJECT_REFCOUNT (mysinkpad, "mysinkpad", 1);
+  gst_object_unref (mysinkpad);
+  mysinkpad = NULL;
+
+  ASSERT_OBJECT_REFCOUNT (volume, "volume", 1);
+  gst_object_unref (volume);
+}
+
+GST_START_TEST (test_unity)
+{
+  GstElement *volume;
+  GstBuffer *inbuffer, *outbuffer;
+  gint16 in[2] = { 16384, -256 };
+
+  volume = setup_volume ();
+  fail_unless (gst_element_set_state (volume,
+          GST_STATE_PLAYING) == GST_STATE_SUCCESS, "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  gst_buffer_set_caps (inbuffer, gst_caps_from_string (VOLUME_CAPS_STRING));
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  /* pushing gives away my reference ... */
+  gst_pad_push (mysrcpad, inbuffer);
+  /* ... but it ends up being collected on the global buffer list */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless (g_list_length (buffers) == 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 4) == 0);
+
+  /* cleanup */
+  cleanup_volume (volume);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_half)
+{
+  GstElement *volume;
+  GstBuffer *inbuffer;
+  GstBuffer *outbuffer;
+  gint16 in[2] = { 16384, -256 };
+  gint16 out[2] = { 8192, -128 };
+
+  volume = setup_volume ();
+  g_object_set (G_OBJECT (volume), "volume", 0.5, NULL);
+  fail_unless (gst_element_set_state (volume,
+          GST_STATE_PLAYING) == GST_STATE_SUCCESS, "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 4) == 0);
+  gst_buffer_set_caps (inbuffer, gst_caps_from_string (VOLUME_CAPS_STRING));
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  /* FIXME: reffing the inbuffer should make the transformation not be
+   * inplace
+   gst_buffer_ref (inbuffer);
+   */
+
+  /* pushing gives away my reference ... */
+  gst_pad_push (mysrcpad, inbuffer);
+  /* ... but it ends up being modified inplace and
+   * collected on the global buffer list */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless (g_list_length (buffers) == 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 4) == 0);
+
+  /* cleanup */
+  cleanup_volume (volume);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_double)
+{
+  GstElement *volume;
+  GstBuffer *inbuffer;
+  GstBuffer *outbuffer;
+  gint16 in[2] = { 16384, -256 };
+  gint16 out[2] = { 32767, -512 };      /* notice the clamped sample */
+
+  volume = setup_volume ();
+  g_object_set (G_OBJECT (volume), "volume", 2.0, NULL);
+  fail_unless (gst_element_set_state (volume,
+          GST_STATE_PLAYING) == GST_STATE_SUCCESS, "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 4) == 0);
+  gst_buffer_set_caps (inbuffer, gst_caps_from_string (VOLUME_CAPS_STRING));
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  /* FIXME: reffing the inbuffer should make the transformation not be
+   * inplace
+   gst_buffer_ref (inbuffer);
+   */
+
+  /* pushing gives away my reference ... */
+  gst_pad_push (mysrcpad, inbuffer);
+  /* ... but it ends up being modified inplace and
+   * collected on the global buffer list */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless (g_list_length (buffers) == 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 4) == 0);
+
+  /* cleanup */
+  cleanup_volume (volume);
+}
+
+GST_END_TEST;
+
+
+Suite *
+volume_suite (void)
+{
+  Suite *s = suite_create ("volume");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_unity);
+  tcase_add_test (tc_chain, test_half);
+  tcase_add_test (tc_chain, test_double);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = volume_suite ();
+  SRunner *sr = srunner_create (s);
+
+  gst_check_init (&argc, &argv);
+
+  srunner_run_all (sr, CK_NORMAL);
+  nf = srunner_ntests_failed (sr);
+  srunner_free (sr);
+
+  return nf;
+}