gst/audiofx/: Add new audiofx element "audioinvert". This element swaps the upper and lower half of samples and can b...

Original commit message from CVS:
reviewed by: Stefan Kost  <ensonic@users.sf.net>
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioinvert.c: (gst_audio_invert_base_init),
(gst_audio_invert_class_init), (gst_audio_invert_init),
(gst_audio_invert_set_property), (gst_audio_invert_get_property),
(gst_audio_invert_set_caps), (gst_audio_invert_transform_int),
(gst_audio_invert_transform_float),
(gst_audio_invert_transform_ip):
* gst/audiofx/audioinvert.h:
Add new audiofx element "audioinvert". This element swaps the upper
and lower half of samples and can be used for example for a
wide-stereo effect. Fixes #396057
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/inspect/plugin-audiofx.xml:
Add docs for the audioinvert element and add them to the build system.
* tests/check/Makefile.am:
* tests/check/elements/audioinvert.c: (setup_invert),
(cleanup_invert), (GST_START_TEST), (invert_suite), (main):
Add unit test suite for the audioinvert element.

2 files changed, 287 insertions, 0 deletions

diff --git a/tests/check/Makefile.am b/tests/check/Makefile.am
index 55198e38..9b6fac23 100644
--- a/tests/check/Makefile.am
+++ b/tests/check/Makefile.am
@@ -34,6 +34,7 @@ endif
 check_PROGRAMS = \
 	$(check_annodex) \
 	elements/audiopanorama \
+	elements/audioinvert \
 	elements/avimux \
 	elements/level \
 	elements/matroskamux \
diff --git a/tests/check/elements/audioinvert.c b/tests/check/elements/audioinvert.c
new file mode 100644
index 00000000..ae40ea93
--- /dev/null
+++ b/tests/check/elements/audioinvert.c
@@ -0,0 +1,286 @@
+/* GStreamer
+ *
+ * unit test for audioinvert
+ *
+ * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
+ *
+ * Greatly based on the audiopanorama unit test
+ * Copyright (C) 2006 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/base/gstbasetransform.h>
+#include <gst/check/gstcheck.h>
+
+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 INVERT_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 ("audio/x-raw-int, "
+        "channels = (int) 1, "
+        "rate = (int) [ 1,  MAX ], "
+        "endianness = (int) BYTE_ORDER, "
+        "width = (int) 16, " "depth = (int) 16, " "signed = (bool) TRUE")
+    );
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-raw-int, "
+        "channels = (int) 1, "
+        "rate = (int) [ 1,  MAX ], "
+        "endianness = (int) BYTE_ORDER, "
+        "width = (int) 16, " "depth = (int) 16, " "signed = (bool) TRUE")
+    );
+
+GstElement *
+setup_invert ()
+{
+  GstElement *invert;
+
+  GST_DEBUG ("setup_invert");
+  invert = gst_check_setup_element ("audioinvert");
+  mysrcpad = gst_check_setup_src_pad (invert, &srctemplate, NULL);
+  mysinkpad = gst_check_setup_sink_pad (invert, &sinktemplate, NULL);
+  gst_pad_set_active (mysrcpad, TRUE);
+  gst_pad_set_active (mysinkpad, TRUE);
+
+  return invert;
+}
+
+void
+cleanup_invert (GstElement * invert)
+{
+  GST_DEBUG ("cleanup_invert");
+
+  g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
+  g_list_free (buffers);
+  buffers = NULL;
+
+  gst_pad_set_active (mysrcpad, FALSE);
+  gst_pad_set_active (mysinkpad, FALSE);
+  gst_check_teardown_src_pad (invert);
+  gst_check_teardown_sink_pad (invert);
+  gst_check_teardown_element (invert);
+}
+
+GST_START_TEST (test_passthrough)
+{
+  GstElement *invert;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[4] = { 16384, -256, 128, -512 };
+  gint16 *res;
+
+  invert = setup_invert ();
+  fail_unless (gst_element_set_state (invert,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (8);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 8);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 8) == 0);
+  caps = gst_caps_from_string (INVERT_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  /* 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 */
+  fail_unless_equals_int (g_list_length (buffers), 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+
+  res = (gint16 *) GST_BUFFER_DATA (outbuffer);
+  GST_INFO ("expected %+5ld %+5ld %+5ld %+5ld real %+5ld %+5ld %+5ld %+5ld",
+      in[0], in[1], in[2], in[3], res[0], res[1], res[2], res[3]);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), in, 8) == 0);
+
+  /* cleanup */
+  cleanup_invert (invert);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_zero)
+{
+  GstElement *invert;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[4] = { 16384, -256, 128, -512 };
+  gint16 out[4] = { 0, 0, 0, 0 };
+  gint16 *res;
+
+  invert = setup_invert ();
+  g_object_set (G_OBJECT (invert), "degree", 0.5, NULL);
+  fail_unless (gst_element_set_state (invert,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (8);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 8);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 8) == 0);
+  caps = gst_caps_from_string (INVERT_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  /* pushing gives away my reference ... */
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  /* ... and puts a new buffer on the global list */
+  fail_unless_equals_int (g_list_length (buffers), 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+
+  res = (gint16 *) GST_BUFFER_DATA (outbuffer);
+  GST_INFO ("expected %+5ld %+5ld %+5ld %+5ld real %+5ld %+5ld %+5ld %+5ld",
+      out[0], out[1], out[2], out[3], res[0], res[1], res[2], res[3]);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 8) == 0);
+
+  /* cleanup */
+  cleanup_invert (invert);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_full_inverse)
+{
+  GstElement *invert;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[4] = { 16384, -256, 128, -512 };
+  gint16 out[4] = { -16385, 255, -129, 511 };
+  gint16 *res;
+
+  invert = setup_invert ();
+  g_object_set (G_OBJECT (invert), "degree", 1.0, NULL);
+  fail_unless (gst_element_set_state (invert,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (8);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 8);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 8) == 0);
+  caps = gst_caps_from_string (INVERT_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  /* pushing gives away my reference ... */
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  /* ... and puts a new buffer on the global list */
+  fail_unless_equals_int (g_list_length (buffers), 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+
+  res = (gint16 *) GST_BUFFER_DATA (outbuffer);
+  GST_INFO ("expected %+5ld %+5ld %+5ld %+5ld real %+5ld %+5ld %+5ld %+5ld",
+      out[0], out[1], out[2], out[3], res[0], res[1], res[2], res[3]);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 8) == 0);
+
+  /* cleanup */
+  cleanup_invert (invert);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_25_inverse)
+{
+  GstElement *invert;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[4] = { 16384, -256, 128, -512 };
+  gint16 out[4] = { 8191, -128, 63, -256 };
+  gint16 *res;
+
+  invert = setup_invert ();
+  g_object_set (G_OBJECT (invert), "degree", 0.25, NULL);
+  fail_unless (gst_element_set_state (invert,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (8);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 8);
+  fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 8) == 0);
+  caps = gst_caps_from_string (INVERT_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  /* pushing gives away my reference ... */
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  /* ... and puts a new buffer on the global list */
+  fail_unless_equals_int (g_list_length (buffers), 1);
+  fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+
+  res = (gint16 *) GST_BUFFER_DATA (outbuffer);
+  GST_INFO ("expected %+5ld %+5ld %+5ld %+5ld real %+5ld %+5ld %+5ld %+5ld",
+      out[0], out[1], out[2], out[3], res[0], res[1], res[2], res[3]);
+  fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 8) == 0);
+
+  /* cleanup */
+  cleanup_invert (invert);
+}
+
+GST_END_TEST;
+
+Suite *
+invert_suite (void)
+{
+  Suite *s = suite_create ("invert");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_passthrough);
+  tcase_add_test (tc_chain, test_zero);
+  tcase_add_test (tc_chain, test_full_inverse);
+  tcase_add_test (tc_chain, test_25_inverse);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = invert_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;
+}