Added fully functional jackaudiosink.

Original commit message from CVS:
* configure.ac:
* ext/Makefile.am:
* ext/jack/Makefile.am:
* ext/jack/gstjack.c: (plugin_init):
* ext/jack/gstjack.h:
* ext/jack/gstjackaudiosink.c: (gst_jack_ring_buffer_get_type),
(gst_jack_ring_buffer_class_init), (jack_process_cb),
(jack_sample_rate_cb), (jack_buffer_size_cb), (jack_shutdown_cb),
(gst_jack_ring_buffer_init), (gst_jack_ring_buffer_dispose),
(gst_jack_ring_buffer_finalize),
(gst_jack_ring_buffer_open_device),
(gst_jack_ring_buffer_close_device),
(gst_jack_ring_buffer_acquire), (gst_jack_ring_buffer_release),
(gst_jack_ring_buffer_start), (gst_jack_ring_buffer_pause),
(gst_jack_ring_buffer_stop), (gst_jack_ring_buffer_delay),
(gst_jack_connect_get_type), (gst_jack_audio_sink_base_init),
(gst_jack_audio_sink_class_init), (gst_jack_audio_sink_init),
(gst_jack_audio_sink_set_property),
(gst_jack_audio_sink_get_property), (gst_jack_audio_sink_getcaps),
(gst_jack_audio_sink_create_ringbuffer):
* ext/jack/gstjackaudiosink.h:
Added fully functional jackaudiosink.

5 files changed, 954 insertions, 651 deletions

diff --git a/ext/jack/Makefile.am b/ext/jack/Makefile.am
index a97a2ad7..0a237dd6 100644
--- a/ext/jack/Makefile.am
+++ b/ext/jack/Makefile.am
@@ -1,11 +1,11 @@
 
 plugin_LTLIBRARIES = libgstjack.la
 
-libgstjack_la_SOURCES = gstjack.c gstjackbin.c
-libgstjack_la_CFLAGS = $(GST_CFLAGS) $(JACK_CFLAGS)
-libgstjack_la_LIBADD = $(JACK_LIBS)
+libgstjack_la_SOURCES = gstjack.c gstjackaudiosink.c
+libgstjack_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(JACK_CFLAGS)
+libgstjack_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstaudio-$(GST_MAJORMINOR) $(JACK_LIBS)
 libgstjack_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 
-noinst_HEADERS = gstjack.h
+noinst_HEADERS = gstjackaudiosink.h
 
 EXTRA_DIST = README
diff --git a/ext/jack/gstjack.c b/ext/jack/gstjack.c
index 2f6affcc..52b4b245 100644
--- a/ext/jack/gstjack.c
+++ b/ext/jack/gstjack.c
@@ -1,528 +1,33 @@
-/* -*- Mode: C; c-basic-offset: 4 -*- */
-/*
-    Copyright (C) 2002, 2003 Andy Wingo <wingo@pobox.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU 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
-    General Public License for more details.
-
-    You should have received a copy of the GNU General Public
-    License along with this library; if not, write to the Free
-    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+/* GStreamer Jack plugins
+ * Copyright (C) 2006 Wim Taymans <wim@fluendo.com>
+ *
+ * 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.
+ */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
-#include <stdlib.h>
-#include <string.h>
-#include "gstjack.h"
-#include <gst/audio/audio.h>
-
-/* TODO:
-
-   - work out the src side (caps setting, etc)
-
-   future core TODO:
-   - make a jack clock provider
-   - add GST_ELEMENT_FIXED_DATA_RATE, GST_ELEMENT_QOS,
-     GST_ELEMENT_CHANGES_DATA_RATE element flags, and make the scheduler
-     sensitive to them
-*/
-
-/* elementfactory information */
-static GstElementDetails gst_jack_bin_details = {
-  "Jack Bin",
-  "Generic/Bin",
-  "Jack processing bin",
-  "Andy Wingo <wingo@pobox.com>",
-};
-
-static GstElementDetails gst_jack_sink_details = {
-  "Jack Sink",
-  "Sink/Audio",
-  "Output to a Jack processing network",
-  "Andy Wingo <wingo@pobox.com>",
-};
-
-static GstElementDetails gst_jack_src_details = {
-  "Jack Src",
-  "Source/Audio",
-  "Input from a Jack processing network",
-  "Andy Wingo <wingo@pobox.com>",
-};
-
-
-static GHashTable *port_name_counts = NULL;
-static GstElementClass *parent_class = NULL;
-
-static void gst_jack_base_init (gpointer g_class);
-static void gst_jack_src_base_init (gpointer g_class);
-static void gst_jack_sink_base_init (gpointer g_class);
-static void gst_jack_init (GstJack * this);
-static void gst_jack_class_init (GstJackClass * klass);
-static void gst_jack_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_jack_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-
-static GstPadTemplate *gst_jack_src_request_pad_factory ();
-static GstPadTemplate *gst_jack_sink_request_pad_factory ();
-static GstPad *gst_jack_request_new_pad (GstElement * element,
-    GstPadTemplate * templ, const gchar * name);
-static GstStateChangeReturn gst_jack_change_state (GstElement * element,
-    GstStateChange transition);
-static GstPadLinkReturn gst_jack_link (GstPad * pad, const GstCaps * caps);
-
-static void gst_jack_loop (GstElement * element);
-
-
-enum
-{
-  ARG_0,
-  ARG_PORT_NAME_PREFIX
-};
-
-
-GType
-gst_jack_get_type (void)
-{
-  static GType jack_type = 0;
-
-  if (!jack_type) {
-    static const GTypeInfo jack_info = {
-      sizeof (GstJackClass),
-      gst_jack_base_init,
-      NULL,
-      NULL,
-      NULL,
-      NULL,
-      sizeof (GstJack),
-      0,
-      NULL,
-    };
-
-    jack_type =
-        g_type_register_static (GST_TYPE_ELEMENT, "GstJack", &jack_info, 0);
-  }
-  return jack_type;
-}
-
-GType
-gst_jack_sink_get_type (void)
-{
-  static GType jack_type = 0;
-
-  if (!jack_type) {
-    static const GTypeInfo jack_info = {
-      sizeof (GstJackClass),
-      gst_jack_sink_base_init,
-      NULL,
-      (GClassInitFunc) gst_jack_class_init,
-      NULL,
-      NULL,
-      sizeof (GstJack),
-      0,
-      (GInstanceInitFunc) gst_jack_init,
-    };
-
-    jack_type =
-        g_type_register_static (GST_TYPE_JACK, "GstJackSink", &jack_info, 0);
-  }
-  return jack_type;
-}
-
-GType
-gst_jack_src_get_type (void)
-{
-  static GType jack_type = 0;
-
-  if (!jack_type) {
-    static const GTypeInfo jack_info = {
-      sizeof (GstJackClass),
-      gst_jack_src_base_init,
-      NULL,
-      (GClassInitFunc) gst_jack_class_init,
-      NULL,
-      NULL,
-      sizeof (GstJack),
-      0,
-      (GInstanceInitFunc) gst_jack_init,
-    };
-
-    jack_type =
-        g_type_register_static (GST_TYPE_JACK, "GstJackSrc", &jack_info, 0);
-  }
-  return jack_type;
-}
-
-static void
-gst_jack_base_init (gpointer g_class)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_set_details (element_class, &gst_jack_bin_details);
-}
-
-static void
-gst_jack_src_base_init (gpointer g_class)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_add_pad_template (element_class,
-      gst_jack_src_request_pad_factory ());
-  gst_element_class_set_details (element_class, &gst_jack_src_details);
-}
-
-static void
-gst_jack_sink_base_init (gpointer g_class)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_add_pad_template (element_class,
-      gst_jack_sink_request_pad_factory ());
-  gst_element_class_set_details (element_class, &gst_jack_sink_details);
-}
-
-static void
-gst_jack_class_init (GstJackClass * klass)
-{
-  GObjectClass *object_class;
-  GstElementClass *element_class;
-  GParamSpec *pspec;
-  gchar *prefix;
-
-  object_class = (GObjectClass *) klass;
-  element_class = (GstElementClass *) klass;
 
-  if (parent_class == NULL)
-    parent_class = g_type_class_peek_parent (klass);
-
-  object_class->get_property = gst_jack_get_property;
-  object_class->set_property = gst_jack_set_property;
-
-  if (GST_IS_JACK_SINK_CLASS (klass))
-    prefix = "gst-out-";
-  else
-    prefix = "gst-in-";
-
-  pspec = g_param_spec_string ("port-name-prefix", "Port name prefix",
-      "String to prepend to jack port names",
-      prefix, G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
-  g_object_class_install_property (object_class, ARG_PORT_NAME_PREFIX, pspec);
-
-  element_class->change_state = gst_jack_change_state;
-
-  element_class->request_new_pad = gst_jack_request_new_pad;
-}
-
-static void
-gst_jack_init (GstJack * this)
-{
-  if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SRC)
-    this->direction = GST_PAD_SRC;
-  else if (G_OBJECT_TYPE (this) == GST_TYPE_JACK_SINK)
-    this->direction = GST_PAD_SINK;
-  else
-    g_assert_not_reached ();
-
-  gst_element_set_loop_function (GST_ELEMENT (this), gst_jack_loop);
-}
-
-static void
-gst_jack_set_property (GObject * object, guint prop_id, const GValue * value,
-    GParamSpec * pspec)
-{
-  GstJack *this = (GstJack *) object;
-
-  switch (prop_id) {
-    case ARG_PORT_NAME_PREFIX:
-      if (this->port_name_prefix)
-        g_free (this->port_name_prefix);
-      this->port_name_prefix = g_strdup (g_value_get_string (value));
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      return;
-  }
-}
-
-static void
-gst_jack_get_property (GObject * object, guint prop_id, GValue * value,
-    GParamSpec * pspec)
-{
-  GstJack *this = (GstJack *) object;
-
-  switch (prop_id) {
-    case ARG_PORT_NAME_PREFIX:
-      g_value_set_string (value, this->port_name_prefix);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-static GstPadTemplate *
-gst_jack_src_request_pad_factory (void)
-{
-  static GstPadTemplate *template = NULL;
-
-  if (!template) {
-    GstCaps *caps;
-
-    caps = gst_caps_from_string (GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS);
-    template = gst_pad_template_new ("%s", GST_PAD_SRC, GST_PAD_REQUEST, caps);
-  }
-
-  return template;
-}
-
-static GstPadTemplate *
-gst_jack_sink_request_pad_factory (void)
-{
-  static GstPadTemplate *template = NULL;
-
-  if (!template) {
-    GstCaps *caps;
-
-    caps = gst_caps_from_string (GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS);
-    template = gst_pad_template_new ("%s", GST_PAD_SINK, GST_PAD_REQUEST, caps);
-  }
-
-  return template;
-}
-
-static GstPad *
-gst_jack_request_new_pad (GstElement * element, GstPadTemplate * templ,
-    const gchar * name)
-{
-  GstJack *this;
-  gchar *newname;
-  GList *l, **pad_list;
-  GstJackPad *pad;
-  gint count;
-
-  g_return_val_if_fail (GST_IS_JACK (element), NULL);
-  this = GST_JACK (element);
-
-  if (!this->bin)
-    pad_list = &this->pads;
-  else if (this->direction == GST_PAD_SRC)
-    pad_list = &this->bin->src_pads;
-  else
-    pad_list = &this->bin->sink_pads;
-
-  if (name) {
-    l = *pad_list;
-    while (l) {
-      if (strcmp (GST_JACK_PAD (l)->name, name) == 0) {
-        g_warning ("requested port name %s already in use.", name);
-        return NULL;
-      }
-      l = l->next;
-    }
-    newname = g_strdup (name);
-  } else {
-    if (this->direction == GST_PAD_SINK)
-      newname = g_strdup ("alsa_pcm:playback_1");
-    else
-      newname = g_strdup ("alsa_pcm:capture_1");
-  }
-
-  pad = g_new0 (GstJackPad, 1);
-
-  if (!port_name_counts)
-    port_name_counts = g_hash_table_new (g_str_hash, g_str_equal);
-
-  count =
-      GPOINTER_TO_INT (g_hash_table_lookup (port_name_counts,
-          this->port_name_prefix));
-  g_hash_table_insert (port_name_counts, g_strdup (this->port_name_prefix),
-      GINT_TO_POINTER (count + 1));
-
-  pad->name = g_strdup_printf ("%s%d", this->port_name_prefix, count);
-
-  pad->peer_name = newname;
-  pad->pad = gst_pad_new_from_template (templ, newname);
-  gst_element_add_pad (GST_ELEMENT (this), pad->pad);
-  gst_pad_set_link_function (pad->pad, gst_jack_link);
-
-  this->pads = g_list_append (this->pads, pad);
-
-  g_print ("returning from request_new_pad, pad %s created, to connect to %s\n",
-      pad->name, pad->peer_name);
-  return pad->pad;
-}
-
-static GstStateChangeReturn
-gst_jack_change_state (GstElement * element, GstStateChange transition)
-{
-  GstJack *this;
-  GList *l = NULL, **pads;
-  GstJackPad *pad;
-  GstCaps *caps;
-
-  g_return_val_if_fail (element != NULL, FALSE);
-  this = GST_JACK (element);
-
-  switch (GST_STATE_PENDING (element)) {
-    case GST_STATE_NULL:
-      JACK_DEBUG ("%s: NULL", GST_OBJECT_NAME (GST_OBJECT (this)));
-
-      break;
-
-    case GST_STATE_READY:
-      JACK_DEBUG ("%s: READY", GST_OBJECT_NAME (GST_OBJECT (this)));
-
-      if (!this->bin) {
-        if (!(this->bin = (GstJackBin *) gst_element_get_managing_bin (element))
-            || !GST_IS_JACK_BIN (this->bin)) {
-          this->bin = NULL;
-          g_warning ("jack element %s needs to be contained in a jack bin.",
-              GST_OBJECT_NAME (element));
-          return GST_STATE_CHANGE_FAILURE;
-        }
-
-        /* fixme: verify that all names are unique */
-        l = this->pads;
-        pads =
-            (this->direction ==
-            GST_PAD_SRC) ? &this->bin->src_pads : &this->bin->sink_pads;
-        while (l) {
-          pad = GST_JACK_PAD (l);
-          JACK_DEBUG ("%s: appending pad %s:%s to list", GST_OBJECT_NAME (this),
-              pad->name, pad->peer_name);
-          *pads = g_list_append (*pads, pad);
-          l = g_list_next (l);
-        }
-      }
-      break;
-
-    case GST_STATE_PAUSED:
-      JACK_DEBUG ("%s: PAUSED", GST_OBJECT_NAME (GST_OBJECT (this)));
-
-      if (GST_STATE (element) == GST_STATE_READY) {
-        /* we're in READY->PAUSED */
-        l = this->pads;
-        while (l) {
-          pad = GST_JACK_PAD (l);
-          caps = gst_caps_copy (gst_pad_get_negotiated_caps (pad->pad));
-          gst_caps_set_simple (caps,
-              "rate", G_TYPE_INT, (int) this->bin->rate,
-              "buffer-frames", G_TYPE_INT, (gint) this->bin->nframes, NULL);
-          if (gst_pad_try_set_caps (pad->pad, caps) <= 0)
-            return GST_STATE_CHANGE_FAILURE;
-          l = g_list_next (l);
-        }
-      }
-      break;
-    case GST_STATE_PLAYING:
-      JACK_DEBUG ("%s: PLAYING", GST_OBJECT_NAME (GST_OBJECT (this)));
-      break;
-  }
-
-  JACK_DEBUG ("%s: state change finished", GST_OBJECT_NAME (this));
-
-  if (GST_ELEMENT_CLASS (parent_class)->change_state)
-    return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
-  return GST_STATE_CHANGE_SUCCESS;
-}
-
-static GstPadLinkReturn
-gst_jack_link (GstPad * pad, const GstCaps * caps)
-{
-  GstJack *this;
-  gint rate, buffer_frames;
-  GstStructure *structure;
-
-  this = GST_JACK (GST_OBJECT_PARENT (pad));
-
-  structure = gst_caps_get_structure (caps, 0);
-  gst_structure_get_int (structure, "rate", &rate);
-  gst_structure_get_int (structure, "buffer-frames", &buffer_frames);
-  if (this->bin && (rate != this->bin->rate ||
-          buffer_frames != this->bin->nframes))
-    return GST_PAD_LINK_REFUSED;
-
-  return GST_PAD_LINK_OK;
-}
-
-static void
-gst_jack_loop (GstElement * element)
-{
-  GstJack *this;
-  GList *pads;
-  gint len;
-  GstJackPad *pad;
-  GstBuffer *buffer;
-
-  this = GST_JACK (element);
-
-  len = this->bin->nframes * sizeof (sample_t);
-
-  pads = this->pads;
-  while (pads) {
-    pad = GST_JACK_PAD (pads);
-
-    if (this->direction == GST_PAD_SINK) {
-      buffer = GST_BUFFER (gst_pad_pull (pad->pad));
-
-      if (GST_IS_EVENT (buffer)) {
-        GstEvent *event = GST_EVENT (buffer);
-
-        switch (GST_EVENT_TYPE (buffer)) {
-          case GST_EVENT_EOS:
-            gst_element_set_eos (element);
-            gst_event_unref (event);
-            return;
-          default:
-            gst_pad_event_default (pad->pad, event);
-            return;
-        }
-      }
-
-      /* if the other plugins only give out buffer-frames or less (as
-         they should), if the length of the GstBuffer is different
-         from nframes then the buffer is short and we will get EOS
-         next */
-      memcpy (pad->data, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
-      if (len != GST_BUFFER_SIZE (buffer))
-        memset (pad->data + GST_BUFFER_SIZE (buffer), 0,
-            len - GST_BUFFER_SIZE (buffer));
-
-      gst_buffer_unref (buffer);
-    } else {
-      buffer = gst_buffer_new ();
-      gst_buffer_set_data (buffer, pad->data, len);
-      GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_DONTFREE);
-
-      gst_pad_push (pad->pad, GST_DATA (buffer));
-    }
-    pads = g_list_next (pads);
-  }
-}
+#include "gstjackaudiosink.h"
 
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
-  if (!gst_element_register (plugin, "jackbin", GST_RANK_NONE,
-          GST_TYPE_JACK_BIN))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "jacksrc", GST_RANK_NONE,
-          GST_TYPE_JACK_SRC))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "jacksink", GST_RANK_NONE,
-          GST_TYPE_JACK_SINK))
+  if (!gst_element_register (plugin, "jackaudiosink", GST_RANK_PRIMARY,
+          GST_TYPE_JACK_AUDIO_SINK))
     return FALSE;
 
   return TRUE;
@@ -531,5 +36,6 @@ plugin_init (GstPlugin * plugin)
 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
     GST_VERSION_MINOR,
     "jack",
-    "Jack Plugin Library", plugin_init, VERSION, "GPL", GST_PACKAGE_NAME,
-    GST_PACKAGE_ORIGIN)
+    "Jack elements",
+    plugin_init,
+    VERSION, "LGPL", "Gstreamer", "http://gstreamer.freedesktop.org")
diff --git a/ext/jack/gstjack.h b/ext/jack/gstjack.h
deleted file mode 100644
index 738168ca..00000000
--- a/ext/jack/gstjack.h
+++ /dev/null
@@ -1,129 +0,0 @@
-/* -*- Mode: C; c-basic-offset: 4 -*- */
-/*
-    Copyright (C) 2002 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
-    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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#ifndef __GST_JACK_H__
-#define __GST_JACK_H__
-
-#include <jack/jack.h>
-#include <gst/gst.h>
-#include <gst/bytestream/bytestream.h>
-
-//#define JACK_DEBUG(str, a...) g_message (str, ##a)
-#define JACK_DEBUG(str, a...)
-
-#define GST_JACK(obj) G_TYPE_CHECK_INSTANCE_CAST(obj, GST_TYPE_JACK, GstJack)
-#define GST_JACK_CLASS(klass) G_TYPE_CHECK_CLASS_CAST(klass, GST_TYPE_JACK, GstJackClass)
-#define GST_IS_JACK(obj) G_TYPE_CHECK_INSTANCE_TYPE(obj, GST_TYPE_JACK)
-#define GST_IS_JACK_CLASS(klass) G_TYPE_CHECK_CLASS_TYPE(klass, GST_TYPE_JACK)
-#define GST_TYPE_JACK gst_jack_get_type()
-
-#define GST_JACK_SINK(obj) G_TYPE_CHECK_INSTANCE_CAST(obj, GST_TYPE_JACK_SINK, GstJack)
-#define GST_JACK_SINK_CLASS(klass) G_TYPE_CHECK_CLASS_CAST(klass, GST_TYPE_JACK_SINK, GstJackClass)
-#define GST_IS_JACK_SINK(obj) G_TYPE_CHECK_INSTANCE_TYPE(obj, GST_TYPE_JACK_SINK)
-#define GST_IS_JACK_SINK_CLASS(klass) G_TYPE_CHECK_CLASS_TYPE(klass, GST_TYPE_JACK_SINK)
-#define GST_TYPE_JACK_SINK gst_jack_sink_get_type()
-
-#define GST_JACK_SRC(obj) G_TYPE_CHECK_INSTANCE_CAST(obj, GST_TYPE_JACK_SRC, GstJack)
-#define GST_JACK_SRC_CLASS(klass) G_TYPE_CHECK_CLASS_CAST(klass, GST_TYPE_JACK_SRC, GstJackClass)
-#define GST_IS_JACK_SRC(obj) G_TYPE_CHECK_INSTANCE_TYPE(obj, GST_TYPE_JACK_SRC)
-#define GST_IS_JACK_SRC_CLASS(klass) G_TYPE_CHECK_CLASS_TYPE(klass, GST_TYPE_JACK_SRC)
-#define GST_TYPE_JACK_SRC gst_jack_src_get_type()
-
-#define GST_JACK_BIN(obj) G_TYPE_CHECK_INSTANCE_CAST(obj, GST_TYPE_JACK_BIN, GstJackBin)
-#define GST_JACK_BIN_CLASS(klass) G_TYPE_CHECK_CLASS_CAST(klass, GST_TYPE_JACK_BIN, GstJackClass)
-#define GST_IS_JACK_BIN(obj) G_TYPE_CHECK_INSTANCE_TYPE(obj, GST_TYPE_JACK_BIN)
-#define GST_IS_JACK_BIN_CLASS(klass) G_TYPE_CHECK_CLASS_TYPE(klass, GST_TYPE_JACK_BIN)
-#define GST_TYPE_JACK_BIN gst_jack_bin_get_type()
-
-#define GST_JACK_PAD(l) ((GstJackPad*)l->data) /* l is a GList */
-
-
-typedef struct _GstJack GstJack;
-typedef struct _GstJackClass GstJackClass;
-typedef struct _GstJackBin GstJackBin;
-typedef struct _GstJackBinClass GstJackBinClass;
-typedef GstJack GstJackSink;
-typedef GstJackClass GstJackSinkClass;
-typedef GstJack GstJackSrc;
-typedef GstJackClass GstJackSrcClass;
-
-
-enum {
-    GST_JACK_OPEN       = (GST_BIN_FLAG_LAST << 0),
-    GST_JACK_ACTIVE     = (GST_BIN_FLAG_LAST << 1),
-    GST_JACK_FLAG_LAST  = (GST_BIN_FLAG_LAST << 3)
-};
-
-
-typedef jack_default_audio_sample_t sample_t;
-
-typedef struct {
-    GstPad *pad;
-    void *data;
-    const gchar *name;
-    const gchar *peer_name;
-    jack_port_t *port;
-} GstJackPad;
-
-struct _GstJack {
-    GstElement element;
-
-    /* list of GstJackPads */
-    GList *pads;
-
-    /* for convenience */
-    GstPadDirection direction;
-
-    gchar *port_name_prefix;
-
-    GstJackBin *bin;
-};
-
-struct _GstJackClass {
-    GstElementClass parent_class;
-};
-
-struct _GstJackBin {
-    GstBin bin;
-
-    jack_client_t *client;
-    gint default_new_port_number;
-
-    /* lists of GstJackPads */
-    GList *sink_pads;
-    GList *src_pads;
-
-    gchar *client_name;
-
-    guint rate;
-    jack_nframes_t nframes;
-};
-
-struct _GstJackBinClass {
-    GstBinClass parent_class;
-};
-
-
-GType gst_jack_get_type (void);
-GType gst_jack_bin_get_type (void);
-GType gst_jack_sink_get_type (void);
-GType gst_jack_src_get_type (void);
-
-
-#endif /* __GST_JACK_H__ */
diff --git a/ext/jack/gstjackaudiosink.c b/ext/jack/gstjackaudiosink.c
new file mode 100644
index 00000000..5a0cadf8
--- /dev/null
+++ b/ext/jack/gstjackaudiosink.c
@@ -0,0 +1,846 @@
+/* GStreamer
+ * Copyright (C) 2006 Wim Taymans <wim@fluendo.com>
+ *
+ * gstjackaudiosink.c: jack audio sink implementation
+ *
+ * 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:gstjacksink
+ * @short_description: JACK audio sink
+ * @see_also: #GstBaseAudioSink, #GstRingBuffer
+ *
+ * A Sink that outputs data to Jack ports. 
+ *
+ * It will create N Jack ports named out_<num> where <num> is starting from 1.
+ * Each port corresponds to a gstreamer channel.
+ *
+ * The samplerate as exposed on the caps is always the same as the samplerate of
+ * the jack server.
+ *
+ * When the ::connect property is set to auto, this element will try to connect
+ * each output port to a random physical jack input pin. In this mode, the sink
+ * will expose the number of physical channels on its pad caps. 
+ *
+ * When the ::connect property is set to none, the element will accept any
+ * number of input channels and will create (but not connect) an output port for
+ * each channel.
+ *
+ * The element will generate an error when the Jack server is shut down when it
+ * was PAUSED or PLAYING. This element does not support dynamic rate and buffer
+ * size changes at runtime.
+ *
+ * Last reviewed on 2006-11-30 (0.10.4)
+ */
+#include <string.h>
+
+#include "gstjackaudiosink.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_jack_audio_sink_debug);
+#define GST_CAT_DEFAULT gst_jack_audio_sink_debug
+
+typedef jack_default_audio_sample_t sample_t;
+
+#define GST_TYPE_JACK_RING_BUFFER        \
+        (gst_jack_ring_buffer_get_type())
+#define GST_JACK_RING_BUFFER(obj)        \
+        (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JACK_RING_BUFFER,GstJackRingBuffer))
+#define GST_JACK_RING_BUFFER_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JACK_RING_BUFFER,GstJackRingBufferClass))
+#define GST_JACK_RING_BUFFER_GET_CLASS(obj) \
+        (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_JACK_RING_BUFFER, GstJackRingBufferClass))
+#define GST_JACK_RING_BUFFER_CAST(obj)        \
+        ((GstJackRingBuffer *)obj)
+#define GST_IS_JACK_RING_BUFFER(obj)     \
+        (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JACK_RING_BUFFER))
+#define GST_IS_JACK_RING_BUFFER_CLASS(klass)\
+        (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JACK_RING_BUFFER))
+
+typedef struct _GstJackRingBuffer GstJackRingBuffer;
+typedef struct _GstJackRingBufferClass GstJackRingBufferClass;
+
+struct _GstJackRingBuffer
+{
+  GstRingBuffer object;
+
+  gint sample_rate;
+  gint buffer_size;
+  gint channels;
+
+  jack_port_t **outport;
+};
+
+struct _GstJackRingBufferClass
+{
+  GstRingBufferClass parent_class;
+};
+
+static void gst_jack_ring_buffer_class_init (GstJackRingBufferClass * klass);
+static void gst_jack_ring_buffer_init (GstJackRingBuffer * ringbuffer,
+    GstJackRingBufferClass * klass);
+static void gst_jack_ring_buffer_dispose (GObject * object);
+static void gst_jack_ring_buffer_finalize (GObject * object);
+
+static GstRingBufferClass *ring_parent_class = NULL;
+
+static gboolean gst_jack_ring_buffer_open_device (GstRingBuffer * buf);
+static gboolean gst_jack_ring_buffer_close_device (GstRingBuffer * buf);
+static gboolean gst_jack_ring_buffer_acquire (GstRingBuffer * buf,
+    GstRingBufferSpec * spec);
+static gboolean gst_jack_ring_buffer_release (GstRingBuffer * buf);
+static gboolean gst_jack_ring_buffer_start (GstRingBuffer * buf);
+static gboolean gst_jack_ring_buffer_pause (GstRingBuffer * buf);
+static gboolean gst_jack_ring_buffer_stop (GstRingBuffer * buf);
+static guint gst_jack_ring_buffer_delay (GstRingBuffer * buf);
+
+/* ringbuffer abstract base class */
+static GType
+gst_jack_ring_buffer_get_type (void)
+{
+  static GType ringbuffer_type = 0;
+
+  if (!ringbuffer_type) {
+    static const GTypeInfo ringbuffer_info = {
+      sizeof (GstJackRingBufferClass),
+      NULL,
+      NULL,
+      (GClassInitFunc) gst_jack_ring_buffer_class_init,
+      NULL,
+      NULL,
+      sizeof (GstJackRingBuffer),
+      0,
+      (GInstanceInitFunc) gst_jack_ring_buffer_init,
+      NULL
+    };
+
+    ringbuffer_type =
+        g_type_register_static (GST_TYPE_RING_BUFFER,
+        "GstJackAudioSinkRingBuffer", &ringbuffer_info, 0);
+  }
+  return ringbuffer_type;
+}
+
+static void
+gst_jack_ring_buffer_class_init (GstJackRingBufferClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstObjectClass *gstobject_class;
+  GstRingBufferClass *gstringbuffer_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstobject_class = (GstObjectClass *) klass;
+  gstringbuffer_class = (GstRingBufferClass *) klass;
+
+  ring_parent_class = g_type_class_peek_parent (klass);
+
+  gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_dispose);
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_finalize);
+
+  gstringbuffer_class->open_device =
+      GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_open_device);
+  gstringbuffer_class->close_device =
+      GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_close_device);
+  gstringbuffer_class->acquire =
+      GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_acquire);
+  gstringbuffer_class->release =
+      GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_release);
+  gstringbuffer_class->start = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_start);
+  gstringbuffer_class->pause = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_pause);
+  gstringbuffer_class->resume = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_start);
+  gstringbuffer_class->stop = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_stop);
+
+  gstringbuffer_class->delay = GST_DEBUG_FUNCPTR (gst_jack_ring_buffer_delay);
+}
+
+/* this is the callback of jack. This should RT-safe.
+ */
+static int
+jack_process_cb (jack_nframes_t nframes, void *arg)
+{
+  GstJackAudioSink *sink;
+  GstRingBuffer *buf;
+  GstJackRingBuffer *abuf;
+  gint readseg, len;
+  guint8 *readptr;
+  gint i, j, flen, channels;
+  sample_t **buffers, *data;
+
+  buf = GST_RING_BUFFER_CAST (arg);
+  abuf = GST_JACK_RING_BUFFER_CAST (arg);
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  channels = buf->spec.channels;
+
+  /* alloc pointers to samples */
+  buffers = g_alloca (sizeof (sample_t *) * channels);
+
+  /* get target buffers */
+  for (i = 0; i < channels; i++) {
+    buffers[i] = (sample_t *) jack_port_get_buffer (abuf->outport[i], nframes);
+  }
+
+  if (gst_ring_buffer_prepare_read (buf, &readseg, &readptr, &len)) {
+    flen = len / channels;
+
+    if (nframes * sizeof (sample_t) != flen)
+      goto wrong_size;
+
+    /* copy samples */
+    GST_DEBUG ("copy %d frames: %p, %d bytes, %d channels", nframes, readptr,
+        flen, channels);
+    data = (sample_t *) readptr;
+
+    /* copy and interleave into target buffers */
+    for (i = 0; i < nframes; i++) {
+      for (j = 0; j < channels; j++) {
+        buffers[j][i] = *data++;
+      }
+    }
+
+    /* clear written samples */
+    gst_ring_buffer_clear (buf, readseg);
+
+    /* we wrote one segment */
+    gst_ring_buffer_advance (buf, 1);
+  } else {
+    /* write silence to all buffers */
+    for (i = 0; i < channels; i++) {
+      memset (buffers[i], 0, nframes * sizeof (sample_t));
+    }
+  }
+  return 0;
+
+  /* ERRORS */
+wrong_size:
+  {
+    GST_ERROR_OBJECT (sink, "nbytes (%d) != flen (%d)",
+        nframes * sizeof (sample_t), flen);
+    return 1;
+  }
+}
+
+/* we error out */
+static int
+jack_sample_rate_cb (jack_nframes_t nframes, void *arg)
+{
+  GstJackAudioSink *sink;
+  GstJackRingBuffer *abuf;
+
+  abuf = GST_JACK_RING_BUFFER_CAST (arg);
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (arg));
+
+  if (abuf->sample_rate != -1 && abuf->sample_rate != nframes)
+    goto not_supported;
+
+  return 0;
+
+  /* ERRORS */
+not_supported:
+  {
+    GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS,
+        (NULL), ("Jack changed the sample rate, which is not supported"));
+    return 1;
+  }
+}
+
+/* we error out */
+static int
+jack_buffer_size_cb (jack_nframes_t nframes, void *arg)
+{
+  GstJackAudioSink *sink;
+  GstJackRingBuffer *abuf;
+
+  abuf = GST_JACK_RING_BUFFER_CAST (arg);
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (arg));
+
+  if (abuf->buffer_size != -1 && abuf->buffer_size != nframes)
+    goto not_supported;
+
+  return 0;
+
+  /* ERRORS */
+not_supported:
+  {
+    GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS,
+        (NULL), ("Jack changed the buffer size, which is not supported"));
+    return 1;
+  }
+}
+
+static void
+jack_shutdown_cb (void *arg)
+{
+  GstJackAudioSink *sink;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (arg));
+
+  GST_DEBUG_OBJECT (sink, "shutdown");
+
+  GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND,
+      (NULL), ("Jack server shutdown"));
+}
+
+static void
+gst_jack_ring_buffer_init (GstJackRingBuffer * buf,
+    GstJackRingBufferClass * g_class)
+{
+  buf->channels = -1;
+  buf->buffer_size = -1;
+  buf->sample_rate = -1;
+}
+
+static void
+gst_jack_ring_buffer_dispose (GObject * object)
+{
+  G_OBJECT_CLASS (ring_parent_class)->dispose (object);
+}
+
+static void
+gst_jack_ring_buffer_finalize (GObject * object)
+{
+  GstJackRingBuffer *ringbuffer;
+
+  ringbuffer = GST_JACK_RING_BUFFER_CAST (object);
+
+  G_OBJECT_CLASS (ring_parent_class)->finalize (object);
+}
+
+/* the _open_device method should make a connection with the server
+ */
+static gboolean
+gst_jack_ring_buffer_open_device (GstRingBuffer * buf)
+{
+  GstJackAudioSink *sink;
+  jack_options_t options;
+  jack_status_t status = 0;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  GST_DEBUG_OBJECT (sink, "open");
+
+  /* never start a server */
+  options = JackNoStartServer;
+  /* if we have a servername, use it */
+  if (sink->server != NULL)
+    options |= JackServerName;
+  /* open the client */
+  sink->client = jack_client_open ("GStreamer", options, &status, sink->server);
+  if (sink->client == NULL)
+    goto could_not_open;
+
+  /* set our callbacks  */
+  jack_set_process_callback (sink->client, jack_process_cb, buf);
+  /* these callbacks cause us to error */
+  jack_set_buffer_size_callback (sink->client, jack_buffer_size_cb, buf);
+  jack_set_sample_rate_callback (sink->client, jack_sample_rate_cb, buf);
+  jack_on_shutdown (sink->client, jack_shutdown_cb, buf);
+
+  GST_DEBUG_OBJECT (sink, "opened");
+
+  return TRUE;
+
+  /* ERRORS */
+could_not_open:
+  {
+    if (status & JackServerFailed) {
+      GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND,
+          (NULL), ("Cannot connect to the Jack server (status %d)", status));
+    } else {
+      GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
+          (NULL), ("Jack client open error (status %d)", status));
+    }
+    return FALSE;
+  }
+}
+
+/* close the connection with the server
+ */
+static gboolean
+gst_jack_ring_buffer_close_device (GstRingBuffer * buf)
+{
+  GstJackAudioSink *sink;
+  gint res;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  GST_DEBUG_OBJECT (sink, "close");
+
+  if ((res = jack_client_close (sink->client))) {
+    /* just a warning, we assume the client is gone. */
+    GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE,
+        (NULL), ("Jack client close error (%d)", res));
+  }
+  sink->client = NULL;
+
+  return TRUE;
+}
+
+/* allocate a buffer and setup resources to process the audio samples of
+ * the format as specified in @spec.
+ *
+ * We allocate N jack ports for each channel. If we are asked to automatically
+ * make a connection with physical ports, we connect as many ports as there are
+ * physical ports, leaving leftover ports unconnected.
+ *
+ * It is assumed that samplerate and number of channels are acceptable since our
+ * getcaps method will always provide correct values. If unacceptable caps are
+ * received for some reason, we fail here.
+ */
+static gboolean
+gst_jack_ring_buffer_acquire (GstRingBuffer * buf, GstRingBufferSpec * spec)
+{
+  GstJackAudioSink *sink;
+  GstJackRingBuffer *abuf;
+  const char **ports;
+  gint sample_rate, buffer_size;
+  gint i, channels, res;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+  abuf = GST_JACK_RING_BUFFER_CAST (buf);
+
+  GST_DEBUG_OBJECT (sink, "acquire");
+
+  /* sample rate must be that of the server */
+  sample_rate = jack_get_sample_rate (sink->client);
+  if (sample_rate != spec->rate)
+    goto wrong_samplerate;
+
+  channels = spec->channels;
+
+  /* alloc enough output ports */
+  abuf->outport = g_new (jack_port_t *, channels);
+
+  /* create an output port for each channel */
+  for (i = 0; i < channels; i++) {
+    gchar *name;
+
+    /* port names start from 1 */
+    name = g_strdup_printf ("out_%d", i + 1);
+    abuf->outport[i] = jack_port_register (sink->client, name,
+        JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
+    if (abuf->outport[i] == NULL)
+      goto out_of_ports;
+
+    g_free (name);
+  }
+
+  buffer_size = jack_get_buffer_size (sink->client);
+
+  /* the segment size in bytes, this is large enough to hold a buffer of 32bit floats
+   * for all channels  */
+  spec->segsize = buffer_size * sizeof (gfloat) * channels;
+  spec->latency_time = gst_util_uint64_scale (spec->segsize,
+      (GST_SECOND / GST_USECOND), spec->rate * spec->bytes_per_sample);
+  /* segtotal based on buffer-time latency */
+  spec->segtotal = spec->buffer_time / spec->latency_time;
+
+  GST_DEBUG_OBJECT (sink, "segsize %d, segtotal %d", spec->segsize,
+      spec->segtotal);
+
+  /* allocate the ringbuffer memory now */
+  buf->data = gst_buffer_new_and_alloc (spec->segtotal * spec->segsize);
+  memset (GST_BUFFER_DATA (buf->data), 0, GST_BUFFER_SIZE (buf->data));
+
+  if ((res = jack_activate (sink->client)))
+    goto could_not_activate;
+
+  /* if we need to automatically connect the ports, do so now. We must do this
+   * after activating the client. */
+  if (sink->connect == GST_JACK_CONNECT_AUTO) {
+    /* find all the physical input ports. A physical input port is a port
+     * associated with a hardware device. Someone needs connect to a physical
+     * port in order to hear something. */
+    ports = jack_get_ports (sink->client, NULL, NULL,
+        JackPortIsPhysical | JackPortIsInput);
+    if (ports == NULL) {
+      /* no ports? fine then we don't do anything except for posting a warning
+       * message. */
+      GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
+          ("No physical input ports found, leaving ports unconnected"));
+      goto done;
+    }
+
+    for (i = 0; i < channels; i++) {
+      /* stop when all input ports are exhausted */
+      if (ports[i] == NULL) {
+        /* post a warning that we could not connect all ports */
+        GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
+            ("No more physical ports, leaving some ports unconnected"));
+        break;
+      }
+      /* connect the port to a physical port */
+      if ((res = jack_connect (sink->client, jack_port_name (abuf->outport[i]),
+                  ports[i])))
+        goto cannot_connect;
+    }
+    free (ports);
+  }
+done:
+
+  abuf->sample_rate = sample_rate;
+  abuf->buffer_size = buffer_size;
+  abuf->channels = spec->channels;
+
+  return TRUE;
+
+  /* ERRORS */
+wrong_samplerate:
+  {
+    GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
+        ("Wrong samplerate, server is running at %d and we received %d",
+            sample_rate, spec->rate));
+    return FALSE;
+  }
+out_of_ports:
+  {
+    GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
+        ("Cannot allocate more Jack ports"));
+    return FALSE;
+  }
+could_not_activate:
+  {
+    GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
+        ("Could not activate client (%d)", res));
+    return FALSE;
+  }
+cannot_connect:
+  {
+    GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
+        ("Could not connect output ports to physical ports (%d)", res));
+    free (ports);
+    return FALSE;
+  }
+}
+
+/* function is called with LOCK */
+static gboolean
+gst_jack_ring_buffer_release (GstRingBuffer * buf)
+{
+  GstJackAudioSink *sink;
+  GstJackRingBuffer *abuf;
+  gint i, res;
+
+  abuf = GST_JACK_RING_BUFFER_CAST (buf);
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  GST_DEBUG_OBJECT (sink, "release");
+
+  if ((res = jack_deactivate (sink->client))) {
+    /* we only warn, this means the server is probably shut down and the client
+     * is gone anyway. */
+    GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
+        ("Could not deactivate Jack client (%d)", res));
+  }
+
+  /* remove all ports */
+  for (i = 0; i < abuf->channels; i++) {
+    GST_LOG_OBJECT (sink, "unregister port %d", i);
+    if ((res = jack_port_unregister (sink->client, abuf->outport[i]))) {
+      GST_DEBUG_OBJECT (sink, "unregister of port failed (%d)", res);
+    }
+    abuf->outport[i] = NULL;
+  }
+  g_free (abuf->outport);
+  abuf->outport = NULL;
+  abuf->channels = -1;
+  abuf->buffer_size = -1;
+  abuf->sample_rate = -1;
+
+  /* free the buffer */
+  gst_buffer_unref (buf->data);
+  buf->data = NULL;
+
+  return TRUE;
+}
+
+static gboolean
+gst_jack_ring_buffer_start (GstRingBuffer * buf)
+{
+  GstJackAudioSink *sink;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  GST_DEBUG_OBJECT (sink, "start");
+
+  return TRUE;
+}
+
+static gboolean
+gst_jack_ring_buffer_pause (GstRingBuffer * buf)
+{
+  GstJackAudioSink *sink;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  GST_DEBUG_OBJECT (sink, "pause");
+
+  return TRUE;
+}
+
+static gboolean
+gst_jack_ring_buffer_stop (GstRingBuffer * buf)
+{
+  GstJackAudioSink *sink;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  GST_DEBUG_OBJECT (sink, "stop");
+
+  return TRUE;
+}
+
+static guint
+gst_jack_ring_buffer_delay (GstRingBuffer * buf)
+{
+  GstJackAudioSink *sink;
+  guint res = 0;
+
+  sink = GST_JACK_AUDIO_SINK (GST_OBJECT_PARENT (buf));
+
+  GST_DEBUG_OBJECT (sink, "delay %u", res);
+
+  return res;
+}
+
+/* elementfactory information */
+static const GstElementDetails gst_jack_audio_sink_details =
+GST_ELEMENT_DETAILS ("Audio Sink (Jack)",
+    "Sink/Audio",
+    "Output to Jack",
+    "Wim Taymans <wim@fluendo.com>");
+
+static GstStaticPadTemplate jackaudiosink_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-raw-float, "
+        "endianness = (int) { " G_STRINGIFY (G_BYTE_ORDER) " }, "
+        "width = (int) 32, "
+        "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, MAX ]")
+    );
+
+/* AudioSink signals and args */
+enum
+{
+  /* FILL ME */
+  SIGNAL_LAST
+};
+
+#define DEFAULT_PROP_CONNECT 	GST_JACK_CONNECT_AUTO
+#define DEFAULT_PROP_SERVER 	NULL
+
+enum
+{
+  PROP_0,
+  PROP_CONNECT,
+  PROP_SERVER,
+  PROP_LAST
+};
+
+#define GST_TYPE_JACK_CONNECT (gst_jack_connect_get_type())
+static GType
+gst_jack_connect_get_type (void)
+{
+  static GType jack_connect_type = 0;
+  static const GEnumValue jack_connect[] = {
+    {GST_JACK_CONNECT_NONE,
+        "Don't automatically connect ports to physical ports", "none"},
+    {GST_JACK_CONNECT_AUTO,
+        "Automatically connect ports to physical ports", "auto"},
+    {0, NULL, NULL},
+  };
+
+  if (!jack_connect_type) {
+    jack_connect_type = g_enum_register_static ("GstJackConnect", jack_connect);
+  }
+  return jack_connect_type;
+}
+
+#define _do_init(bla) \
+    GST_DEBUG_CATEGORY_INIT (gst_jack_audio_sink_debug, "jacksink", 0, "jacksink element");
+
+GST_BOILERPLATE_FULL (GstJackAudioSink, gst_jack_audio_sink, GstBaseAudioSink,
+    GST_TYPE_BASE_AUDIO_SINK, _do_init);
+
+static void gst_jack_audio_sink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_jack_audio_sink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static GstCaps *gst_jack_audio_sink_getcaps (GstBaseSink * bsink);
+static GstRingBuffer *gst_jack_audio_sink_create_ringbuffer (GstBaseAudioSink *
+    sink);
+
+static void
+gst_jack_audio_sink_base_init (gpointer g_class)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+  gst_element_class_set_details (element_class, &gst_jack_audio_sink_details);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&jackaudiosink_sink_factory));
+}
+
+static void
+gst_jack_audio_sink_class_init (GstJackAudioSinkClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseSinkClass *gstbasesink_class;
+  GstBaseAudioSinkClass *gstbaseaudiosink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasesink_class = (GstBaseSinkClass *) klass;
+  gstbaseaudiosink_class = (GstBaseAudioSinkClass *) klass;
+
+  gobject_class->get_property =
+      GST_DEBUG_FUNCPTR (gst_jack_audio_sink_get_property);
+  gobject_class->set_property =
+      GST_DEBUG_FUNCPTR (gst_jack_audio_sink_set_property);
+
+  g_object_class_install_property (gobject_class, PROP_CONNECT,
+      g_param_spec_enum ("connect", "Connect",
+          "Specify how the output ports will be connected",
+          GST_TYPE_JACK_CONNECT, DEFAULT_PROP_CONNECT, G_PARAM_READWRITE));
+
+  g_object_class_install_property (gobject_class, PROP_SERVER,
+      g_param_spec_string ("server", "Server",
+          "The Jack server to connect to (NULL = default)",
+          DEFAULT_PROP_SERVER, G_PARAM_READWRITE));
+
+  gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_jack_audio_sink_getcaps);
+
+  gstbaseaudiosink_class->create_ringbuffer =
+      GST_DEBUG_FUNCPTR (gst_jack_audio_sink_create_ringbuffer);
+}
+
+static void
+gst_jack_audio_sink_init (GstJackAudioSink * sink,
+    GstJackAudioSinkClass * g_class)
+{
+  sink->connect = DEFAULT_PROP_CONNECT;
+  sink->server = g_strdup (DEFAULT_PROP_SERVER);
+}
+
+static void
+gst_jack_audio_sink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstJackAudioSink *sink;
+
+  sink = GST_JACK_AUDIO_SINK (object);
+
+  switch (prop_id) {
+    case PROP_CONNECT:
+      sink->connect = g_value_get_enum (value);
+      break;
+    case PROP_SERVER:
+      g_free (sink->server);
+      sink->server = g_value_dup_string (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_jack_audio_sink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstJackAudioSink *sink;
+
+  sink = GST_JACK_AUDIO_SINK (object);
+
+  switch (prop_id) {
+    case PROP_CONNECT:
+      g_value_set_enum (value, sink->connect);
+      break;
+    case PROP_SERVER:
+      g_value_set_string (value, sink->server);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstCaps *
+gst_jack_audio_sink_getcaps (GstBaseSink * bsink)
+{
+  GstJackAudioSink *sink = GST_JACK_AUDIO_SINK (bsink);
+  const char **ports;
+  gint min, max;
+  gint rate;
+
+  if (sink->client == NULL)
+    goto no_client;
+
+  if (sink->connect == GST_JACK_CONNECT_AUTO) {
+    /* get a port count, this is the number of channels we can automatically
+     * connect. */
+    ports = jack_get_ports (sink->client, NULL, NULL,
+        JackPortIsPhysical | JackPortIsInput);
+    max = 0;
+    if (ports != NULL) {
+      for (; ports[max]; max++);
+      free (ports);
+    } else
+      max = 0;
+  } else {
+    /* we allow any number of pads, somoething else is going to connect the
+     * pads. */
+    max = G_MAXINT;
+  }
+  min = MIN (1, max);
+
+  rate = jack_get_sample_rate (sink->client);
+
+  GST_DEBUG_OBJECT (sink, "got %d-%d ports, samplerate: %d", min, max, rate);
+
+  if (!sink->caps) {
+    sink->caps = gst_caps_new_simple ("audio/x-raw-float",
+        "endianness", G_TYPE_INT, G_BYTE_ORDER,
+        "width", G_TYPE_INT, 32,
+        "rate", G_TYPE_INT, rate,
+        "channels", GST_TYPE_INT_RANGE, min, max, NULL);
+  }
+  GST_INFO_OBJECT (sink, "returning caps %" GST_PTR_FORMAT, sink->caps);
+
+  return gst_caps_ref (sink->caps);
+
+  /* ERRORS */
+no_client:
+  {
+    GST_DEBUG_OBJECT (sink, "device not open, using template caps");
+    /* base class will get template caps for us when we return NULL */
+    return NULL;
+  }
+}
+
+static GstRingBuffer *
+gst_jack_audio_sink_create_ringbuffer (GstBaseAudioSink * sink)
+{
+  GstRingBuffer *buffer;
+
+  buffer = g_object_new (GST_TYPE_JACK_RING_BUFFER, NULL);
+  GST_DEBUG_OBJECT (sink, "created ringbuffer @%p", buffer);
+
+  return buffer;
+}
diff --git a/ext/jack/gstjackaudiosink.h b/ext/jack/gstjackaudiosink.h
new file mode 100644
index 00000000..218e9de0
--- /dev/null
+++ b/ext/jack/gstjackaudiosink.h
@@ -0,0 +1,80 @@
+/* GStreamer
+ * Copyright (C) 2006 Wim Taymans <wim@fluendo.com>
+ *
+ * gstjacksink.h:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_JACK_AUDIO_SINK_H__
+#define __GST_JACK_AUDIO_SINK_H__
+
+#include <jack/jack.h>
+
+#include <gst/gst.h>
+#include <gst/audio/gstbaseaudiosink.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_JACK_AUDIO_SINK             (gst_jack_audio_sink_get_type())
+#define GST_JACK_AUDIO_SINK(obj)             (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JACK_AUDIO_SINK,GstJackAudioSink))
+#define GST_JACK_AUDIO_SINK_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JACK_AUDIO_SINK,GstJackAudioSinkClass))
+#define GST_JACK_AUDIO_SINK_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_JACK_AUDIO_SINK,GstJackAudioSinkClass))
+#define GST_IS_JACK_AUDIO_SINK(obj)          (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JACK_AUDIO_SINK))
+#define GST_IS_JACK_AUDIO_SINK_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JACK_AUDIO_SINK))
+
+typedef struct _GstJackAudioSink GstJackAudioSink;
+typedef struct _GstJackAudioSinkClass GstJackAudioSinkClass;
+
+typedef enum {
+  GST_JACK_CONNECT_NONE,
+  GST_JACK_CONNECT_AUTO
+} GstJackConnect;
+
+/**
+ * GstJackAudioSink:
+ * 
+ * Opaque #GstJackAudioSink.
+ */
+struct _GstJackAudioSink {
+  GstBaseAudioSink element;
+
+  /* cached caps */
+  GstCaps         *caps;
+
+  /* properties */
+  GstJackConnect   connect;
+  gchar           *server;
+
+  /* our client */
+  jack_client_t   *client;
+
+  /*< private >*/
+  gpointer _gst_reserved[GST_PADDING];
+};
+
+struct _GstJackAudioSinkClass {
+  GstBaseAudioSinkClass parent_class;
+
+  /*< private >*/
+  gpointer _gst_reserved[GST_PADDING];
+};
+
+GType gst_jack_audio_sink_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_JACK_AUDIO_SINK_H__ */