gst/spectrum/gstspectrum.c: Fix leaking buffers.

Original commit message from CVS:
* gst/spectrum/gstspectrum.c: (gst_spectrum_event),
(gst_spectrum_transform_ip):
Fix leaking buffers.
* tests/check/Makefile.am:
* tests/check/elements/spectrum.c: (setup_spectrum),
(cleanup_spectrum), (GST_START_TEST), (spectrum_suite), (main):
Add simple test for spectrum element.

2 files changed, 219 insertions, 2 deletions

diff --git a/gst/spectrum/gstspectrum.c b/gst/spectrum/gstspectrum.c
index 3ca5a90a..75d3e2dd 100644
--- a/gst/spectrum/gstspectrum.c
+++ b/gst/spectrum/gstspectrum.c
@@ -396,7 +396,8 @@ gst_spectrum_transform_ip (GstBaseTransform * trans, GstBuffer * in)
 
   GST_LOG_OBJECT (spectrum, "input size: %d bytes", GST_BUFFER_SIZE (in));
 
-  gst_adapter_push (spectrum->adapter, gst_buffer_ref (in));
+  /* can we do this nicer? */
+  gst_adapter_push (spectrum->adapter, gst_buffer_copy (in));
   /* required number of bytes */
   wanted = spectrum->channels * SPECTRUM_WINDOW_LEN * sizeof (gint16);
   /* FIXME: 4.0 was 2.0 before, but that include the mirrored spectrum */
@@ -422,7 +423,7 @@ gst_spectrum_transform_ip (GstBaseTransform * trans, GstBuffer * in)
     gst_spectrum_fix_loud (spectrum->loud, spectrum->re, spectrum->im,
         SPECTRUM_WINDOW_LEN, 0);
 
-    /* resample to requested number of bands */
+    /* resample to requested number of bands and offset by threshold */
     for (i = 0, pos = 0.0; i < spectrum->bands; i++, pos += step) {
       if (spectrum->loud[(gint) pos] > spectrum->threshold) {
         spect[i] = spectrum->loud[(gint) pos] - spectrum->threshold;
diff --git a/tests/check/elements/spectrum.c b/tests/check/elements/spectrum.c
new file mode 100644
index 00000000..7e3d1e10
--- /dev/null
+++ b/tests/check/elements/spectrum.c
@@ -0,0 +1,216 @@
+/* GStreamer
+ *
+ * unit test for spectrum
+ *
+ * Copyright (C) <2007> Stefan Kost <ensonic@users.sf.net>
+ *
+ * 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 SPECT_CAPS_TEMPLATE_STRING \
+  "audio/x-raw-int, " \
+    "rate = (int) [ 1, MAX ], " \
+    "channels = (int) [ 1, 8 ], " \
+    "endianness = (int) BYTE_ORDER, " \
+    "width = (int) {8, 16}, " \
+    "depth = (int) {8, 16}, " \
+    "signed = (boolean) true"
+
+#define SPECT_CAPS_STRING \
+  "audio/x-raw-int, " \
+    "rate = (int) 44100, " \
+    "channels = (int) 1, " \
+    "endianness = (int) BYTE_ORDER, " \
+    "width = (int) 16, " \
+    "depth = (int) 16, " \
+    "signed = (boolean) true"
+
+#define SPECT_BANDS 64
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (SPECT_CAPS_TEMPLATE_STRING)
+    );
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (SPECT_CAPS_TEMPLATE_STRING)
+    );
+
+/* takes over reference for outcaps */
+GstElement *
+setup_spectrum ()
+{
+  GstElement *spectrum;
+
+  GST_DEBUG ("setup_spectrum");
+  spectrum = gst_check_setup_element ("spectrum");
+  mysrcpad = gst_check_setup_src_pad (spectrum, &srctemplate, NULL);
+  mysinkpad = gst_check_setup_sink_pad (spectrum, &sinktemplate, NULL);
+  gst_pad_set_active (mysrcpad, TRUE);
+  gst_pad_set_active (mysinkpad, TRUE);
+
+  return spectrum;
+}
+
+void
+cleanup_spectrum (GstElement * spectrum)
+{
+  GST_DEBUG ("cleanup_spectrum");
+
+  gst_pad_set_active (mysrcpad, FALSE);
+  gst_pad_set_active (mysinkpad, FALSE);
+  gst_check_teardown_src_pad (spectrum);
+  gst_check_teardown_sink_pad (spectrum);
+  gst_check_teardown_element (spectrum);
+}
+
+
+GST_START_TEST (test_int16)
+{
+  GstElement *spectrum;
+  GstBuffer *inbuffer, *outbuffer;
+  GstBus *bus;
+  GstCaps *caps;
+  GstMessage *message;
+  const GstStructure *structure;
+  int i, j;
+  gint16 *data;
+  const GValue *list, *value;
+  GstClockTime endtime;
+  guchar level;
+
+  spectrum = setup_spectrum ();
+  g_object_set (spectrum, "message", TRUE, "interval", GST_SECOND / 10,
+      "bands", SPECT_BANDS, "threshold", -80, NULL);
+
+  fail_unless (gst_element_set_state (spectrum,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  /* create a fake 1 sec buffer with a half-amplitude block signal */
+  inbuffer = gst_buffer_new_and_alloc (44100 * sizeof (gint16));
+  data = (gint16 *) GST_BUFFER_DATA (inbuffer);
+  for (j = 0; j < 44100; ++j) {
+    *data = 16536;
+    ++data;
+  }
+  caps = gst_caps_from_string (SPECT_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  /* create a bus to get the spectrum message on */
+  bus = gst_bus_new ();
+  ASSERT_OBJECT_REFCOUNT (bus, "bus", 1);
+  gst_element_set_bus (spectrum, bus);
+  ASSERT_OBJECT_REFCOUNT (bus, "bus", 2);
+
+  /* pushing gives away my reference ... */
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  /* ... but it ends up being collected on the global buffer list */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless_equals_int (g_list_length (buffers), 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+
+  message = gst_bus_poll (bus, GST_MESSAGE_ELEMENT, -1);
+  ASSERT_OBJECT_REFCOUNT (message, "message", 1);
+
+  fail_unless (message != NULL);
+  fail_unless (GST_MESSAGE_SRC (message) == GST_OBJECT (spectrum));
+  fail_unless (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT);
+  structure = gst_message_get_structure (message);
+  fail_if (structure == NULL);
+  fail_unless_equals_string ((char *) gst_structure_get_name (structure),
+      "spectrum");
+  fail_unless (gst_structure_get_clock_time (structure, "endtime", &endtime));
+
+  /* block wave of half amplitude has -5.94 dB for rms, peak and decay */
+  list = gst_structure_get_value (structure, "spectrum");
+  for (i = 0; i < SPECT_BANDS; ++i) {
+    value = gst_value_list_get_value (list, i);
+    level = g_value_get_uchar (value);
+    GST_DEBUG ("band[%3d] is %3d", i, level);
+    fail_if (level == 0);
+  }
+  fail_unless_equals_int (g_list_length (buffers), 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+  fail_unless (inbuffer == outbuffer);
+
+  /* clean up */
+  /* flush current messages,and future state change messages */
+  gst_bus_set_flushing (bus, TRUE);
+
+  /* message has a ref to the element */
+  ASSERT_OBJECT_REFCOUNT (spectrum, "spectrum", 2);
+  gst_message_unref (message);
+  ASSERT_OBJECT_REFCOUNT (spectrum, "spectrum", 1);
+
+  gst_element_set_bus (spectrum, NULL);
+  ASSERT_OBJECT_REFCOUNT (bus, "bus", 1);
+  gst_object_unref (bus);
+  gst_buffer_unref (outbuffer);
+  fail_unless (gst_element_set_state (spectrum,
+          GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");
+  ASSERT_OBJECT_REFCOUNT (spectrum, "spectrum", 1);
+  cleanup_spectrum (spectrum);
+}
+
+GST_END_TEST;
+
+
+Suite *
+spectrum_suite (void)
+{
+  Suite *s = suite_create ("spectrum");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_int16);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = spectrum_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;
+}