Index: configure.ac
===================================================================
RCS file: /cvs/gstreamer/gst-plugins-good/configure.ac,v
retrieving revision 1.670
diff -u -r1.670 configure.ac
--- configure.ac	24 Jul 2006 11:48:03 -0000	1.670
+++ configure.ac	5 Aug 2006 15:28:20 -0000
@@ -80,6 +80,7 @@
 		videofilter \
 		alpha \
 		apetag \
+		audiopanorama \
 		auparse \
 		autodetect \
 		avi \
@@ -760,6 +761,7 @@
 gst/Makefile
 gst/alpha/Makefile
 gst/apetag/Makefile
+gst/audiopanorama/Makefile
 gst/auparse/Makefile
 gst/autodetect/Makefile
 gst/avi/Makefile
Index: docs/plugins/gst-plugins-good-plugins-docs.sgml
===================================================================
RCS file: /cvs/gstreamer/gst-plugins-good/docs/plugins/gst-plugins-good-plugins-docs.sgml,v
retrieving revision 1.29
diff -u -r1.29 gst-plugins-good-plugins-docs.sgml
--- docs/plugins/gst-plugins-good-plugins-docs.sgml	24 Jul 2006 15:25:49 -0000	1.29
+++ docs/plugins/gst-plugins-good-plugins-docs.sgml	5 Aug 2006 15:28:20 -0000
@@ -14,6 +14,7 @@
     <title>gst-plugins-good Elements</title>
     <xi:include href="xml/element-apedemux.xml" />
     <xi:include href="xml/element-apev2mux.xml" />
+    <xi:include href="xml/element-audiopanorama.xml" />
     <xi:include href="xml/element-autoaudiosink.xml" />
     <xi:include href="xml/element-autovideosink.xml" />
     <xi:include href="xml/element-avidemux.xml" />
@@ -59,6 +60,7 @@
     <xi:include href="xml/plugin-alphacolor.xml" />
     <xi:include href="xml/plugin-annodex.xml" />
     <xi:include href="xml/plugin-apetag.xml" />
+    <xi:include href="xml/plugin-audiopanorama.xml" />
     <xi:include href="xml/plugin-autodetect.xml" />
     <xi:include href="xml/plugin-avi.xml" />
     <xi:include href="xml/plugin-cacasink.xml" />
Index: docs/plugins/gst-plugins-good-plugins-sections.txt
===================================================================
RCS file: /cvs/gstreamer/gst-plugins-good/docs/plugins/gst-plugins-good-plugins-sections.txt,v
retrieving revision 1.27
diff -u -r1.27 gst-plugins-good-plugins-sections.txt
--- docs/plugins/gst-plugins-good-plugins-sections.txt	24 Jul 2006 15:25:49 -0000	1.27
+++ docs/plugins/gst-plugins-good-plugins-sections.txt	5 Aug 2006 15:28:21 -0000
@@ -28,6 +28,16 @@
 </SECTION>
 
 <SECTION>
+<FILE>element-audiopanorama</FILE>
+GstAudioPanorama
+<TITLE>audiopanorama</TITLE>
+<SUBSECTION Standard>
+GstAudioPanoramaClass
+GST_AUDIO_PANORAMA
+GST_AUDIO_PANORAMA_CLASS
+</SECTION>
+
+<SECTION>
 <FILE>element-autoaudiosink</FILE>
 GstAutoAudioSink
 <TITLE>autoaudiosink</TITLE>
Index: gst/audiopanorama/.cvsignore
===================================================================
RCS file: gst/audiopanorama/.cvsignore
diff -N gst/audiopanorama/.cvsignore
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gst/audiopanorama/.cvsignore	5 Aug 2006 15:28:21 -0000
@@ -0,0 +1,6 @@
+.deps
+.libs
+*.lo
+*.la
+Makefile
+Makefile.in
Index: gst/audiopanorama/Makefile.am
===================================================================
RCS file: gst/audiopanorama/Makefile.am
diff -N gst/audiopanorama/Makefile.am
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gst/audiopanorama/Makefile.am	5 Aug 2006 15:28:21 -0000
@@ -0,0 +1,14 @@
+# plugindir is set in configure
+
+plugin_LTLIBRARIES = libgstaudiopanorama.la
+
+# sources used to compile this plug-in
+libgstaudiopanorama_la_SOURCES = audiopanorama.c
+
+# flags used to compile this plugin
+libgstaudiopanorama_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS)
+libgstaudiopanorama_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
+libgstaudiopanorama_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+# headers we need but don't want installed
+noinst_HEADERS = audiopanorama.h
Index: gst/audiopanorama/audiopanorama.c
===================================================================
RCS file: gst/audiopanorama/audiopanorama.c
diff -N gst/audiopanorama/audiopanorama.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gst/audiopanorama/audiopanorama.c	5 Aug 2006 15:28:21 -0000
@@ -0,0 +1,397 @@
+/*
+ * GStreamer
+ * 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.
+ */
+
+/**
+ * SECTION:gstaudiopanorama
+ * @short_description: audio strereo pan effect
+ *
+ * <refsect2>
+ * Echo effect with controllable effect-ratio, delay-time and feedback.
+ * <title>Example launch line</title>
+ * <para>
+ * <programlisting>
+ * gst-launch audiotestsrc wave=saw ! audiopanorama panorama=-100 ! alsasink
+ * gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiopanorama panorama=-100 ! alsasink
+ * </programlisting>
+ * In the latter example the echo is applied to the input signal of the
+ * soundcard (like a microphone).
+ * </para>
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+#include <gst/controller/gstcontroller.h>
+
+#include "audiopanorama.h"
+
+#define GST_CAT_DEFAULT gst_audio_panorama_debug
+GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
+
+static const GstElementDetails element_details =
+GST_ELEMENT_DETAILS ("AudioPanorama",
+  "Filter/Effect/Audio",
+  "Positions audio streams in the stereo panorama",
+  "Stefan Kost <ensonic@users.sf.net>");
+
+/* Filter signals and args */
+enum {
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum {
+  PROP_0,
+  PROP_PANORAMA
+};
+
+static GstStaticPadTemplate sink_template =
+GST_STATIC_PAD_TEMPLATE (
+  "sink",
+  GST_PAD_SINK,
+  GST_PAD_ALWAYS,
+  GST_STATIC_CAPS ("audio/x-raw-int, "
+        "rate = (int) [ 1, MAX ], " 
+        "channels = (int) [ 1, 2 ], "      
+        "endianness = (int) BYTE_ORDER, "   
+        "width = (int) 16, "        
+        "depth = (int) 16, "        
+        "signed = (boolean) true")
+);
+
+static GstStaticPadTemplate src_template =
+GST_STATIC_PAD_TEMPLATE (
+  "src",
+  GST_PAD_SRC,
+  GST_PAD_ALWAYS,
+  GST_STATIC_CAPS ("audio/x-raw-int, "
+        "rate = (int) [ 1, MAX ], " 
+        "channels = (int) 2, "      
+        "endianness = (int) BYTE_ORDER, "   
+        "width = (int) 16, "        
+        "depth = (int) 16, "        
+        "signed = (boolean) true")
+);
+
+#define DEBUG_INIT(bla) \
+  GST_DEBUG_CATEGORY_INIT (gst_audio_panorama_debug, "audiopanorama", 0, "audiopanorama plugin");
+
+GST_BOILERPLATE_FULL (GstAudioPanorama, gst_audio_panorama, GstBaseTransform,
+    GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
+
+static void gst_audio_panorama_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_audio_panorama_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static gboolean gst_audio_panorama_get_unit_size (GstBaseTransform * base,
+    GstCaps * caps, guint * size);
+static GstCaps * gst_audio_panorama_transform_caps (GstBaseTransform * base,
+    GstPadDirection direction, GstCaps * caps);
+static gboolean gst_audio_panorama_set_caps (GstBaseTransform * base,
+    GstCaps * incaps, GstCaps * outcaps);
+
+static void gst_audio_panorama_transform_m2s (GstAudioPanorama *filter,
+    gint16 *idata, gint16 *odata, guint num_samples);
+static void gst_audio_panorama_transform_s2s (GstAudioPanorama *filter,
+    gint16 *idata, gint16 *odata, guint num_samples);
+
+static GstFlowReturn gst_audio_panorama_transform (GstBaseTransform * base,
+    GstBuffer * inbuf, GstBuffer * outbuf);
+
+/* GObject vmethod implementations */
+
+static void
+gst_audio_panorama_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_template));
+  gst_element_class_set_details (element_class, &element_details);
+}
+
+static void
+gst_audio_panorama_class_init (GstAudioPanoramaClass * klass)
+{
+  GObjectClass *gobject_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gobject_class->set_property = gst_audio_panorama_set_property;
+  gobject_class->get_property = gst_audio_panorama_get_property;
+
+  g_object_class_install_property (gobject_class, PROP_PANORAMA,
+    g_param_spec_int ("panorama", "Panorama", "Position in stereo panorama (-100 left -> 100 right)",
+          -100, 100, 0,
+          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
+
+  GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size =
+      GST_DEBUG_FUNCPTR (gst_audio_panorama_get_unit_size);
+  GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
+      GST_DEBUG_FUNCPTR (gst_audio_panorama_transform_caps);
+  GST_BASE_TRANSFORM_CLASS (klass)->set_caps =
+      GST_DEBUG_FUNCPTR (gst_audio_panorama_set_caps);
+  GST_BASE_TRANSFORM_CLASS (klass)->transform =
+      GST_DEBUG_FUNCPTR (gst_audio_panorama_transform);
+}
+
+static void
+gst_audio_panorama_init (GstAudioPanorama *filter, GstAudioPanoramaClass * klass)
+{
+  filter->panorama = 0;
+}
+
+static void
+gst_audio_panorama_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
+
+  switch (prop_id) {
+    case PROP_PANORAMA:
+      filter->panorama = g_value_get_int (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_audio_panorama_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
+
+  switch (prop_id) {
+    case PROP_PANORAMA:
+      g_value_set_int (value, filter->panorama);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+/* GstBaseTransform vmethod implementations */
+
+static gboolean
+gst_audio_panorama_get_unit_size (GstBaseTransform * base, GstCaps * caps, guint * size)
+{
+  gint width, channels;
+  GstStructure *structure;
+  gboolean ret;
+
+  g_return_val_if_fail (size, FALSE);
+
+  /* this works for both float and int */
+  structure = gst_caps_get_structure (caps, 0);
+  ret = gst_structure_get_int (structure, "width", &width);
+  ret &= gst_structure_get_int (structure, "channels", &channels);
+  g_return_val_if_fail (ret, FALSE);
+
+  *size = width * channels / 8;
+
+  return TRUE;
+}
+
+static GstCaps *
+gst_audio_panorama_transform_caps (GstBaseTransform * base,
+    GstPadDirection direction, GstCaps * caps)
+{
+  GstCaps *res;
+  GstStructure *structure;
+
+  /* transform caps gives one single caps so we can just replace
+   * the channel property with our range. */
+  res = gst_caps_copy (caps);
+  structure = gst_caps_get_structure (res, 0);
+  if (direction == GST_PAD_SRC) {
+    GST_INFO("allow 1-2 channels");
+    gst_structure_set (structure, "channels", GST_TYPE_INT_RANGE, 1, 2, NULL);
+  }
+  else {
+    GST_INFO("allow 2 channels");
+    gst_structure_set (structure, "channels", G_TYPE_INT, 2, NULL);
+  }
+
+  return res;
+}
+
+static gboolean
+gst_audio_panorama_set_caps (GstBaseTransform * base, GstCaps * incaps, GstCaps * outcaps)
+{
+  GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
+  const GstStructure *structure;
+  gboolean ret;
+  gint channels;
+  
+  /*GST_INFO ("incaps are %" GST_PTR_FORMAT, incaps);*/
+
+  structure = gst_caps_get_structure (incaps, 0);
+  ret = gst_structure_get_int (structure, "channels", &channels);
+  if (!ret) goto Error;
+
+  GST_DEBUG("try to process input with %d channels", channels);
+  
+  /* set processing function */
+  switch(channels) {
+    case 1:
+      filter->process = gst_audio_panorama_transform_m2s;
+      ret = TRUE;
+      break;
+    case 2:
+      filter->process = gst_audio_panorama_transform_s2s;
+      ret = TRUE;
+      break;
+    default:
+      filter->process = NULL;
+      ret = FALSE;
+      GST_WARNING("can't process input with %d channels", channels);
+  }
+
+Error:
+  return ret;
+}
+ 
+static void
+gst_audio_panorama_transform_m2s (GstAudioPanorama *filter, gint16 *idata, gint16 *odata, guint num_samples)
+{
+  guint i;
+  gdouble val;
+  glong lval,rval;
+  gdouble rpan, lpan;
+
+  /* pan:  -100   0   100
+   * lpan:  1.0  0.5  0.0  
+   * rpan:  0.0  0.5  1.0
+   */
+  rpan = (gdouble) (filter->panorama + 100) / 200.0;
+  lpan = 1.0 - rpan;
+
+  for (i = 0; i < num_samples; i++) {
+    val = (gdouble)*idata++;
+    
+    lval=(glong)(val * lpan);
+    rval=(glong)(val * rpan);
+
+    *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
+    *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
+  }
+}
+
+static void
+gst_audio_panorama_transform_s2s (GstAudioPanorama *filter, gint16 *idata, gint16 *odata, guint num_samples)
+{
+  guint i;
+  glong lval,rval;
+  gdouble lival, rival;
+  gdouble lrpan, llpan, rrpan, rlpan;
+
+  /* pan:  -100   0   100
+   * llpan: 1.0  1.0  0.0
+   * lrpan: 1.0  0.0  0.0
+   * rrpan: 0.0  1.0  1.0
+   * rlpan: 0.0  0.0  1.0
+   */
+  if (filter->panorama>0) {
+    rlpan = (gdouble)filter->panorama / 100.0;
+    llpan = 1.0 - rlpan;
+    lrpan = 0.0;
+    rrpan = 1.0;
+  }
+  else {
+    rrpan = (gdouble)(100 + filter->panorama) / 100.0;
+    lrpan = 1.0 - rrpan;
+    rlpan = 0.0;
+    llpan = 1.0;    
+  }
+
+  for (i = 0; i < num_samples; i++) {
+    lival = (gdouble)*idata++;
+    rival = (gdouble)*idata++;
+    
+    lval = lival*llpan + rival*lrpan;
+    rval = lival*rlpan + rival*rrpan;
+
+    *odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
+    *odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
+  }
+}
+
+/* this function does the actual processing
+ */
+static GstFlowReturn
+gst_audio_panorama_transform (GstBaseTransform * base, GstBuffer * inbuf, GstBuffer * outbuf)
+{
+  GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
+  guint num_samples = GST_BUFFER_SIZE (outbuf) / (2 * sizeof (gint16));
+  
+  if (!gst_buffer_is_writable (outbuf)) return GST_FLOW_OK;
+
+  if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (outbuf)))
+    gst_object_sync_values (G_OBJECT (filter), GST_BUFFER_TIMESTAMP (outbuf));
+          
+  filter->process (filter, (gint16 *) GST_BUFFER_DATA (inbuf),
+    (gint16 *) GST_BUFFER_DATA (outbuf), num_samples);
+  
+  return GST_FLOW_OK;
+}
+
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and pad templates
+ * register the features
+ *
+ * exchange the string 'plugin' with your elemnt name
+ */
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  /* initialize gst controller library */
+  gst_controller_init(NULL, NULL);
+
+  return gst_element_register (plugin, "audiopanorama", GST_RANK_NONE,
+      GST_TYPE_AUDIO_PANORAMA);
+}
+
+/* this is the structure that gstreamer looks for to register plugins
+ *
+ * exchange the strings 'plugin' and 'Template plugin' with you plugin name and
+ * description
+ */
+GST_PLUGIN_DEFINE (
+    GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "audiopanorama",
+    "Audio stereo pan plugin",
+    plugin_init,
+    VERSION,
+    "LGPL",
+    "GStreamer",
+    "http://gstreamer.net/"
+)
Index: gst/audiopanorama/audiopanorama.h
===================================================================
RCS file: gst/audiopanorama/audiopanorama.h
diff -N gst/audiopanorama/audiopanorama.h
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gst/audiopanorama/audiopanorama.h	5 Aug 2006 15:28:21 -0000
@@ -0,0 +1,56 @@
+/* 
+ * GStreamer
+ * 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.
+ */
+ 
+#ifndef __GST_AUDIO_PANORAMA_H__
+#define __GST_AUDIO_PANORAMA_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUDIO_PANORAMA            (gst_audio_panorama_get_type())
+#define GST_AUDIO_PANORAMA(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_PANORAMA,GstAudioPanorama))
+#define GST_IS_AUDIO_PANORAMA(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_PANORAMA))
+#define GST_AUDIO_PANORAMA_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
+#define GST_IS_AUDIO_PANORAMA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_PANORAMA))
+#define GST_AUDIO_PANORAMA_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
+
+typedef struct _GstAudioPanorama      GstAudioPanorama;
+typedef struct _GstAudioPanoramaClass GstAudioPanoramaClass;
+
+struct _GstAudioPanorama {
+  GstBaseTransform element;
+
+  gint panorama;
+  
+  /* < private > */
+  void (*process)(GstAudioPanorama*, gint16*, gint16*, guint);
+};
+
+struct _GstAudioPanoramaClass {
+  GstBaseTransformClass parent_class;
+};
+
+GType gst_audio_panorama_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUDIO_PANORAMA_H__ */
Index: tests/check/Makefile.am
===================================================================
RCS file: /cvs/gstreamer/gst-plugins-good/tests/check/Makefile.am,v
retrieving revision 1.15
diff -u -r1.15 Makefile.am
--- tests/check/Makefile.am	30 May 2006 14:35:17 -0000	1.15
+++ tests/check/Makefile.am	5 Aug 2006 15:28:22 -0000
@@ -24,6 +24,7 @@
 endif
 
 check_PROGRAMS = \
+	elements/audiopanorama \
 	elements/avimux \
 	elements/level \
 	elements/matroskamux \
@@ -45,5 +46,13 @@
 
 SUPPRESSIONS = $(top_srcdir)/common/gst.supp
 
+elements_audiopanorama_LDADD = \
+	$(GST_BASE_LIBS) $(GST_CONTROLLER_LIBS) \
+	$(LDADD)
+
+elements_audiopanorama_CFLAGS = \
+	$(GST_BASE_CFLAGS) $(GST_CONTROLLER_CFLAGS) \
+	$(CFLAGS) $(AM_CFLAGS)
+
 elements_cmmldec_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS)
 elements_cmmlenc_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS)
Index: tests/check/elements/audiopanorama.c
===================================================================
RCS file: tests/check/elements/audiopanorama.c
diff -N tests/check/elements/audiopanorama.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ tests/check/elements/audiopanorama.c	5 Aug 2006 15:28:22 -0000
@@ -0,0 +1,458 @@
+/* GStreamer
+ *
+ * unit test for audiopanorama
+ *
+ * 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 PANORAMA_MONO_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"
+
+#define PANORAMA_STEREO_CAPS_STRING  \
+    "audio/x-raw-int, "                 \
+    "channels = (int) 2, "              \
+    "rate = (int) 44100, "              \
+    "endianness = (int) BYTE_ORDER, "   \
+    "width = (int) 16, "                \
+    "depth = (int) 16, "                \
+    "signed = (bool) TRUE"
+
+#define PANORAMA_WRONG_CAPS_STRING  \
+    "audio/x-raw-int, "                 \
+    "channels = (int) 5, "              \
+    "rate = (int) 44100, "              \
+    "endianness = (int) BYTE_ORDER, "   \
+    "width = (int) 16, "                \
+    "depth = (int) 16, "                \
+    "signed = (bool) FALSE"
+
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-raw-int, "
+    "channels = (int) 2, "
+    "rate = (int) [ 1,  MAX ], "
+    "endianness = (int) BYTE_ORDER, "
+    "width = (int) 16, "
+    "depth = (int) 16, "
+    "signed = (bool) TRUE")
+    );
+static GstStaticPadTemplate msrctemplate = 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")
+    );
+static GstStaticPadTemplate ssrctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-raw-int, "
+    "channels = (int) 2, "
+    "rate = (int) [ 1,  MAX ], "
+    "endianness = (int) BYTE_ORDER, "
+    "width = (int) 16, "
+    "depth = (int) 16, "
+    "signed = (bool) TRUE")
+    );
+
+GstElement *
+setup_panorama_m ()
+{
+  GstElement *panorama;
+
+  GST_DEBUG ("setup_panorama");
+  panorama = gst_check_setup_element ("audiopanorama");
+  mysrcpad = gst_check_setup_src_pad (panorama, &msrctemplate, NULL);
+  mysinkpad = gst_check_setup_sink_pad (panorama, &sinktemplate, NULL);
+  gst_pad_set_active (mysrcpad, TRUE);
+  gst_pad_set_active (mysinkpad, TRUE);
+
+  return panorama;
+}
+
+GstElement *
+setup_panorama_s ()
+{
+  GstElement *panorama;
+
+  GST_DEBUG ("setup_panorama");
+  panorama = gst_check_setup_element ("audiopanorama");
+  mysrcpad = gst_check_setup_src_pad (panorama, &ssrctemplate, NULL);
+  mysinkpad = gst_check_setup_sink_pad (panorama, &sinktemplate, NULL);
+  gst_pad_set_active (mysrcpad, TRUE);
+  gst_pad_set_active (mysinkpad, TRUE);
+
+  return panorama;
+}
+
+void
+cleanup_panorama (GstElement * panorama)
+{
+  GST_DEBUG ("cleanup_panorama");
+
+  g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
+  g_list_free (buffers);
+  buffers = NULL;
+
+  gst_check_teardown_src_pad (panorama);
+  gst_check_teardown_sink_pad (panorama);
+  gst_check_teardown_element (panorama);
+}
+
+GST_START_TEST (test_mono_middle)
+{
+  GstElement *panorama;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[2] = { 16384, -256 };
+  gint16 out[4] = { 8192, 8192, -128, -128 };
+  gint16 *res;
+
+  panorama = setup_panorama_m ();
+  fail_unless (gst_element_set_state (panorama,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  caps = gst_caps_from_string (PANORAMA_MONO_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",
+      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_panorama (panorama);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_mono_left)
+{
+  GstElement *panorama;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[2] = { 16384, -256 };
+  gint16 out[4] = { 16384, 0, -256, 0 };
+  gint16 *res;
+
+  panorama = setup_panorama_m ();
+  g_object_set (G_OBJECT (panorama), "panorama", -100, NULL);
+  fail_unless (gst_element_set_state (panorama,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_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);
+  caps = gst_caps_from_string (PANORAMA_MONO_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_panorama (panorama);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_mono_right)
+{
+  GstElement *panorama;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[2] = { 16384, -256 };
+  gint16 out[4] = { 0, 16384, 0, -256 };
+  gint16 *res;
+
+  panorama = setup_panorama_m ();
+  g_object_set (G_OBJECT (panorama), "panorama", 100, NULL);
+  fail_unless (gst_element_set_state (panorama,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_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);
+  caps = gst_caps_from_string (PANORAMA_MONO_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_panorama (panorama);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_stereo_middle)
+{
+  GstElement *panorama;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[4] = { 16384, -256, 8192, 128 };
+  gint16 *res;
+
+  panorama = setup_panorama_s ();
+  fail_unless (gst_element_set_state (panorama,
+          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);
+  caps = gst_caps_from_string (PANORAMA_STEREO_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 (inbuffer);
+  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_panorama (panorama);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_stereo_left)
+{
+  GstElement *panorama;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[4] = { 16384, -256, 8192, 128 };
+  gint16 out[4] = { 16384-256, 0, 8192+128, 0 };
+  gint16 *res;
+
+  panorama = setup_panorama_s ();
+  g_object_set (G_OBJECT (panorama), "panorama", -100, NULL);
+  fail_unless (gst_element_set_state (panorama,
+          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 (PANORAMA_STEREO_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_panorama (panorama);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_stereo_right)
+{
+  GstElement *panorama;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  gint16 in[4] = { 16384, -256, 8192, 128 };
+  gint16 out[4] = { 0, -256+16384, 0, 128+8192 };
+  gint16 *res;
+
+  panorama = setup_panorama_s ();
+  g_object_set (G_OBJECT (panorama), "panorama", 100, NULL);
+  fail_unless (gst_element_set_state (panorama,
+          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 (PANORAMA_STEREO_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_panorama (panorama);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_wrong_caps)
+{
+  GstElement *panorama;
+  GstBuffer *inbuffer, *outbuffer;
+  gint16 in[2] = { 16384, -256 };
+  GstBus *bus;
+  GstMessage *message;
+  GstCaps *caps;
+
+  panorama = setup_panorama_m ();
+  bus = gst_bus_new ();
+
+  fail_unless (gst_element_set_state (panorama,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (4);
+  memcpy (GST_BUFFER_DATA (inbuffer), in, 4);
+  caps = gst_caps_from_string (PANORAMA_WRONG_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  gst_buffer_ref (inbuffer);
+
+  /* set a bus here so we avoid getting state change messages */
+  gst_element_set_bus (panorama, bus);
+
+  /* pushing gives an error because it can't negotiate with wrong caps */
+  fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer),
+      GST_FLOW_NOT_NEGOTIATED);
+  /* ... and the buffer would have been lost if we didn't ref it ourselves */
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  gst_buffer_unref (inbuffer);
+  fail_unless_equals_int (g_list_length (buffers), 0);
+
+  /* panorama_set_caps should not have been called since basetransform caught
+   * the negotiation problem */
+  fail_if ((message = gst_bus_pop (bus)) != NULL);
+
+  /* cleanup */
+  gst_element_set_bus (panorama, NULL);
+  gst_object_unref (GST_OBJECT (bus));
+  cleanup_panorama (panorama);
+}
+
+GST_END_TEST;
+
+
+Suite *
+panorama_suite (void)
+{
+  Suite *s = suite_create ("panorama");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_mono_middle);
+  tcase_add_test (tc_chain, test_mono_left);
+  tcase_add_test (tc_chain, test_mono_right);
+  tcase_add_test (tc_chain, test_stereo_middle);
+  tcase_add_test (tc_chain, test_stereo_left);
+  tcase_add_test (tc_chain, test_stereo_right);
+  tcase_add_test (tc_chain, test_wrong_caps);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = panorama_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;
+}
