Trying to correct the GST_CHECK_CONFIGPROG macro. It works perfectly for

Original commit message from CVS:
* Trying to correct the GST_CHECK_CONFIGPROG macro. It works perfectly for
I hope i dont break anything.

* Shifting the MAS plugin back from gst-rotten.

common

@@ -1 +1 @@
-Subproject commit 14f44a56213628dcfdf8ca77159ba0f9622f6102
+Subproject commit e258b347aa811ca7aa49e102ca3d576a91e4fb62

configure.ac

@@ -1208,6 +1208,14 @@ int main (int argc, char *argv[])
 AC_SUBST(LAME_CFLAGS)
 AC_SUBST(LAME_LIBS)
 
+dnl *** MAS (TODO) ***
+translit(dnm, m, l) AM_CONDITIONAL(USE_MAS, true)
+GST_CHECK_FEATURE(MAS, [mas], mas, [
+   GST_CHECK_CONFIGPROG(MAS, mas-config)
+   AC_SUBST(MAS_CFLAGS)
+   AC_SUBST(MAS_LIBS)
+])
+
 dnl *** libcaca ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_LIBCACA, true)
 GST_CHECK_FEATURE(LIBCACA, [libcaca], libcaca, [
@@ -1954,6 +1962,7 @@ ext/libpng/Makefile
 ext/librfb/Makefile
 ext/libvisual/Makefile
 ext/mad/Makefile
+ext/mas/Makefile
 ext/mikmod/Makefile
 ext/mpeg2dec/Makefile
 ext/mpeg2enc/Makefile

ext/Makefile.am

@@ -226,6 +226,12 @@ else
 MPLEX_DIR=
 endif
 
+if USE_MAS
+MAS_DIR=mas
+else
+MAS_DIR=
+endif
+
 if USE_MUSICBRAINZ
 MUSICBRAINZ_DIR=musicbrainz
 else
@@ -381,6 +387,7 @@ SUBDIRS=\
 	$(LIBRFB_DIR) \
 	$(LIBVISUAL_DIR) \
 	$(MAD_DIR) \
+	$(MAS_DIR) \
 	$(MIKMOD_DIR) \
 	$(MPEG2DEC_DIR) \
 	$(MPEG2ENC_DIR) \
@@ -444,6 +451,7 @@ DIST_SUBDIRS=\
 	mpeg2dec \
 	mpeg2enc \
 	mplex \
+	mas \
 	musicbrainz \
 	nas \
 	ogg \

ext/mas/Makefile.am

@@ -0,0 +1,8 @@
+
+plugin_LTLIBRARIES = libgstmassink.la
+
+libgstmassink_la_SOURCES = gstmassink.c
+libgstmassink_la_CFLAGS = $(GST_CFLAGS) $(MAS_CFLAGS)
+libgstmassink_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(MAS_LIBS)
+
+noinst_HEADERS = gstmassink.h

ext/mas/gstmassink.c

@@ -0,0 +1,710 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+/*
+ * Portions derived from maswavplay.c (distributed under the X11
+ * license):
+ *
+ * Copyright (c) 2001-2003 Shiman Associates Inc. All Rights Reserved.
+ * Copyright (c) 2000, 2001 by Shiman Associates Inc. and Sun
+ * Microsystems, Inc. All Rights Reserved.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "gstmassink.h"
+
+
+/* Signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  ARG_0,
+  ARG_MUTE,
+};
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-raw-int, " "endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", " "signed = (boolean) TRUE, "      /* We dont deal with unsigned creatures */
+        "width = (int) 16, "
+        "depth = (int) 16, "
+        "rate = [ 8000, 96000 ], "
+        "channels = [ 1, 2 ]; "
+        "audio/x-raw-int, "
+        "signed = (boolean) TRUE, "
+        "width = (int) 8, "
+        "depth = (int) 8, " "rate = [ 8000, 96000 ], " "channels = [ 1, 2 ]"));
+
+static void gst_massink_base_init (gpointer g_class);
+static void gst_massink_class_init (GstMassinkClass * klass);
+static void gst_massink_init (GstMassink * massink);
+static void gst_massink_set_clock (GstElement * element, GstClock * clock);
+static gboolean gst_massink_open_audio (GstMassink * sink);
+static void gst_massink_close_audio (GstMassink * sink);
+static GstElementStateReturn gst_massink_change_state (GstElement * element);
+static gboolean gst_massink_sync_parms (GstMassink * massink);
+static GstPadLinkReturn gst_massink_sinkconnect (GstPad * pad,
+    const GstCaps * caps);
+
+static void gst_massink_chain (GstPad * pad, GstData * _data);
+
+static void gst_massink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_massink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static GstElementClass *parent_class = NULL;
+
+/*static guint gst_massink_signals[LAST_SIGNAL] = { 0 }; */
+
+GType
+gst_massink_get_type (void)
+{
+  static GType massink_type = 0;
+
+  if (!massink_type) {
+    static const GTypeInfo massink_info = {
+      sizeof (GstMassinkClass),
+      gst_massink_base_init,
+      NULL,
+      (GClassInitFunc) gst_massink_class_init,
+      NULL,
+      NULL,
+      sizeof (GstMassink),
+      0,
+      (GInstanceInitFunc) gst_massink_init,
+    };
+
+    massink_type =
+        g_type_register_static (GST_TYPE_ELEMENT, "GstMassink", &massink_info,
+        0);
+  }
+  return massink_type;
+}
+
+static void
+gst_massink_base_init (gpointer g_class)
+{
+  static GstElementDetails massink_details =
+      GST_ELEMENT_DETAILS ("MAS audio sink",
+      "Sink/Audio",
+      "Plays audio to a MAS server",
+      "Zeeshan Ali <zeenix@gmail.com>");
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+  gst_element_class_set_details (element_class, &massink_details);
+}
+
+static void
+gst_massink_class_init (GstMassinkClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MUTE, g_param_spec_boolean ("mute", "mute", "mute", FALSE, G_PARAM_READWRITE));  /* CHECKME */
+
+  gobject_class->set_property = gst_massink_set_property;
+  gobject_class->get_property = gst_massink_get_property;
+
+  gstelement_class->change_state = gst_massink_change_state;
+  gstelement_class->set_clock = gst_massink_set_clock;
+}
+
+static void
+gst_massink_set_clock (GstElement * element, GstClock * clock)
+{
+  GstMassink *massink;
+
+  massink = GST_MASSINK (element);
+
+  massink->clock = clock;
+}
+
+static void
+gst_massink_init (GstMassink * massink)
+{
+  gint32 err;
+  guint32 from, to;
+
+  massink->sinkpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (&sink_factory),
+      "sink");
+  gst_element_add_pad (GST_ELEMENT (massink), massink->sinkpad);
+  gst_pad_set_chain_function (massink->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_massink_chain));
+  gst_pad_set_link_function (massink->sinkpad, gst_massink_sinkconnect);
+
+  massink->mute = FALSE;
+  massink->depth = MASSINK_DEFAULT_DEPTH;
+  massink->channels = MASSINK_DEFAULT_CHANNELS;
+  massink->frequency = MASSINK_DEFAULT_FREQUENCY;
+
+  /* MAS API connects to the MAS server on library initialization and
+   * there is no way of connecting/disconnecting with the server
+   * after the library initialization. So there is no point
+   * in having this code in gst_massink_open_audio
+   */
+  GST_DEBUG ("Connecting to MAS server..\n");
+  masc_log_verbosity (MAS_VERBLVL_DEBUG);
+  err = mas_init ();
+
+  if (err < 0) {
+    GST_DEBUG ("Connection with MAS server failed.");
+    /* What else should/can I do to signal an error from an instance init 
+     * function?
+     */
+    exit (1);
+  }
+
+  /* Inititialize everything to 0 */
+  from = G_STRUCT_OFFSET (GstMassink, audio_channel);
+  to = G_STRUCT_OFFSET (GstMassink, data) + sizeof (massink->data);
+  memset ((gchar *) massink + from, 0, to - from);
+}
+
+static gboolean
+gst_massink_sync_parms (GstMassink * massink)
+{
+  g_return_val_if_fail (massink != NULL, FALSE);
+  g_return_val_if_fail (GST_IS_MASSINK (massink), FALSE);
+
+  if (GST_FLAG_IS_SET (GST_ELEMENT (massink), GST_MASSINK_OPEN)) {
+    gst_massink_close_audio (massink);
+    return gst_massink_open_audio (massink);
+  }
+
+  else {
+    return TRUE;
+  }
+}
+
+static GstPadLinkReturn
+gst_massink_sinkconnect (GstPad * pad, const GstCaps * caps)
+{
+  GstMassink *massink;
+  GstStructure *structure;
+
+  massink = GST_MASSINK (gst_pad_get_parent (pad));
+
+  structure = gst_caps_get_structure (caps, 0);
+
+  gst_structure_get_int (structure, "depth", &massink->depth);
+
+  gst_structure_get_int (structure, "endianness", &massink->endianness);
+  //gst_structure_get_boolean (structure, "signed", &massink->sign);
+
+  gst_structure_get_int (structure, "channels", &massink->channels);
+  gst_structure_get_int (structure, "rate", &massink->frequency);
+
+  if (gst_massink_sync_parms (massink)) {
+    return GST_PAD_LINK_OK;
+  }
+
+  return GST_PAD_LINK_REFUSED;
+}
+
+static void
+gst_massink_chain (GstPad * pad, GstData * _data)
+{
+  GstBuffer *buf = GST_BUFFER (_data);
+  gint32 err;
+
+  g_return_if_fail (pad != NULL);
+  g_return_if_fail (GST_IS_PAD (pad));
+  g_return_if_fail (buf != NULL);
+
+  GstMassink *massink = GST_MASSINK (gst_pad_get_parent (pad));
+
+  if (massink->clock && GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+    GST_DEBUG ("massink: clock wait: %llu\n", GST_BUFFER_TIMESTAMP (buf));
+    gst_element_wait (GST_ELEMENT (massink), GST_BUFFER_TIMESTAMP (buf));
+  }
+
+  if (GST_BUFFER_DATA (buf) != NULL) {
+    if (!massink->mute) {
+      GST_DEBUG ("massink: data=%p size=%d", GST_BUFFER_DATA (buf),
+          GST_BUFFER_SIZE (buf));
+      if (GST_BUFFER_SIZE (buf) > MASSINK_BUFFER_SIZE) {
+        gst_buffer_unref (buf);
+        return;
+      }
+
+      massink->data.length = GST_BUFFER_SIZE (buf);
+
+      memcpy (massink->data.segment, GST_BUFFER_DATA (buf),
+          GST_BUFFER_SIZE (buf));
+
+      err = mas_send (massink->audio_channel, &massink->data);
+
+      if (err < 0) {
+        GST_DEBUG ("Error sending data to MAS server\n");
+        gst_buffer_unref (buf);
+        return;
+      }
+
+      /* FIXME: Please correct the Timestamping if its wrong */
+      massink->data.header.media_timestamp += massink->data.length / 4;
+      massink->data.header.sequence++;
+    }
+  }
+
+  gst_buffer_unref (buf);
+}
+
+static void
+gst_massink_set_property (GObject * object, guint prop_id, const GValue * value,
+    GParamSpec * pspec)
+{
+  GstMassink *massink;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail (GST_IS_MASSINK (object));
+  massink = GST_MASSINK (object);
+
+  switch (prop_id) {
+    case ARG_MUTE:
+      massink->mute = g_value_get_boolean (value);
+      break;
+    default:
+      break;
+  }
+}
+
+static void
+gst_massink_get_property (GObject * object, guint prop_id, GValue * value,
+    GParamSpec * pspec)
+{
+  GstMassink *massink;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail (GST_IS_MASSINK (object));
+  massink = GST_MASSINK (object);
+
+  switch (prop_id) {
+    case ARG_MUTE:
+      g_value_set_boolean (value, massink->mute);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  if (!gst_element_register (plugin, "massink", GST_RANK_NONE,
+          GST_TYPE_MASSINK)) {
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "massink",
+    "uses MAS for audio output",
+    plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN);
+
+static gboolean
+gst_massink_open_audio (GstMassink * massink)
+{
+  gint32 err;
+  struct mas_data_characteristic *dc;
+
+  GST_DEBUG ("Establishing audio output channel.");
+  err =
+      mas_make_data_channel ("Gstreamer", &massink->audio_channel,
+      &massink->audio_source, &massink->audio_sink);
+  if (err < 0) {
+    massink->audio_channel = 0;
+    massink->audio_source = massink->audio_sink = 0;
+    GST_DEBUG ("Failed to create data channel");
+    return FALSE;
+  }
+
+  err = mas_asm_get_port_by_name (0, "default_mix_sink", &massink->mix_sink);
+  if (err < 0) {
+    GST_DEBUG ("Failed to get default_mix_sink");
+    massink->mix_sink = 0;
+    return FALSE;
+  }
+
+  GST_DEBUG ("Instantiating endian device.");
+  err = mas_asm_instantiate_device ("endian", 0, 0, &massink->endian);
+  if (err < 0) {
+    GST_DEBUG ("Failed to instantiate endian device");
+    massink->endian = 0;
+    return FALSE;
+  }
+
+  err =
+      mas_asm_get_port_by_name (massink->endian, "sink", &massink->endian_sink);
+  if (err < 0) {
+    GST_DEBUG ("Failed to get sink port from endian device");
+    massink->endian_sink = 0;
+    return FALSE;
+  }
+
+  err =
+      mas_asm_get_port_by_name (massink->endian, "source",
+      &massink->endian_source);
+  if (err < 0) {
+    GST_DEBUG ("Failed to get source port from endian device");
+    massink->endian_source = 0;
+    return FALSE;
+  }
+
+  GST_DEBUG ("Connecting net -> endian.");
+
+  dc = masc_make_audio_basic_dc (
+      (massink->depth == 8) ? MAS_ULINEAR_FMT : MAS_LINEAR_FMT,
+      massink->frequency,
+      massink->depth,
+      massink->channels,
+      (massink->endianness == G_LITTLE_ENDIAN) ? MAS_LITTLE_ENDIAN_FMT :
+      MAS_BIG_ENDIAN_FMT);
+  mas_assert (dc != 0, "Memory allocation error");
+
+  err =
+      mas_asm_connect_source_sink (massink->audio_source, massink->endian_sink,
+      dc);
+
+  masc_strike_dc (dc);
+  masc_rtfree (dc);
+
+  if (err < 0) {
+    GST_DEBUG ("Failed to connect Channel Converter output to endian");
+    return FALSE;
+  }
+
+  /* The next device is 'if needed' only. After the following if()
+     statement, open_source will contain the current unconnected
+     source in the path (will be either endian_source or
+     squant_source in this case)
+   */
+
+  massink->open_source = massink->endian_source;
+
+  if (massink->channels != 2) {
+    GST_DEBUG ("Instantiating Channel Converter device.");
+    err =
+        mas_asm_instantiate_device ("channelconv", 0, 0, &massink->channelconv);
+    if (err < 0) {
+      GST_DEBUG ("Failed to instantiate Channel Converter device");
+      massink->channelconv = 0;
+      return FALSE;
+    }
+
+    err =
+        mas_asm_get_port_by_name (massink->channelconv, "sink",
+        &massink->channelconv_sink);
+    if (err < 0) {
+      GST_DEBUG ("Failed to get sink port from Channel Converter device");
+      massink->channelconv_sink = 0;
+      return FALSE;
+    }
+
+    err =
+        mas_asm_get_port_by_name (massink->channelconv, "source",
+        &massink->channelconv_source);
+    if (err < 0) {
+      GST_DEBUG ("Failed to get source port from Channel Converter device");
+      massink->channelconv_source = 0;
+      return FALSE;
+    }
+
+    GST_DEBUG ("Connecting audio -> channelconv.");
+
+    dc = masc_make_audio_basic_dc (
+        (massink->depth == 8) ? MAS_ULINEAR_FMT : MAS_LINEAR_FMT,
+        massink->frequency,
+        massink->depth, massink->channels, MAS_HOST_ENDIAN_FMT);
+    mas_assert (dc != 0, "Memory allocation error");
+
+    err =
+        mas_asm_connect_source_sink (massink->open_source,
+        massink->channelconv_sink, dc);
+
+    masc_strike_dc (dc);
+    masc_rtfree (dc);
+
+    if (err < 0) {
+      GST_DEBUG ("Failed to connect endian device to Channel converter");
+      return FALSE;
+    }
+
+    massink->open_source = massink->channelconv_source;
+  }
+
+  if (massink->depth != 16) {
+    GST_DEBUG
+        ("Sample resolution is not 16 bit/sample, instantiating squant device.");
+    err = mas_asm_instantiate_device ("squant", 0, 0, &massink->squant);
+    if (err < 0) {
+      massink->squant = 0;
+      GST_DEBUG ("Failed to instantiate squant device");
+      return FALSE;
+    }
+
+    err =
+        mas_asm_get_port_by_name (massink->squant, "sink",
+        &massink->squant_sink);
+    if (err < 0) {
+      massink->squant_sink = 0;
+      GST_DEBUG ("Failed to get sink port from squant device");
+      return FALSE;
+    }
+
+    err =
+        mas_asm_get_port_by_name (massink->squant, "source",
+        &massink->squant_source);
+    if (err < 0) {
+      massink->squant_source = 0;
+      GST_DEBUG ("Failed to get source port from squant device");
+      return FALSE;
+    }
+
+    GST_DEBUG ("Connecting endian -> squant.");
+
+    dc = masc_make_audio_basic_dc (
+        (massink->depth == 8) ? MAS_ULINEAR_FMT : MAS_LINEAR_FMT,
+        massink->frequency, massink->depth, 2, MAS_HOST_ENDIAN_FMT);
+    mas_assert (dc != 0, "Memory allocation error");
+
+    err =
+        mas_asm_connect_source_sink (massink->open_source, massink->squant_sink,
+        dc);
+
+    masc_strike_dc (dc);
+    masc_rtfree (dc);
+
+    if (err < 0) {
+      GST_DEBUG ("Failed to connect endian output to squant");
+      return FALSE;
+    }
+
+    /* sneaky: the squant device is optional -> pretend it isn't there */
+    massink->open_source = massink->squant_source;
+  }
+
+  /* Another 'if necessary' device, as above */
+  if (massink->frequency != 44100) {
+    GST_DEBUG ("Sample rate is not 44100, instantiating srate device.");
+    err = mas_asm_instantiate_device ("srate", 0, 0, &massink->srate);
+
+    if (err < 0) {
+      massink->srate = 0;
+      GST_DEBUG ("Failed to instantiate srate device");
+      return FALSE;
+    }
+
+    mas_asm_get_port_by_name (massink->srate, "sink", &massink->srate_sink);
+    if (err < 0) {
+      massink->srate_sink = 0;
+      GST_DEBUG ("Failed to get sink port from srate device");
+      return FALSE;
+    }
+
+    mas_asm_get_port_by_name (massink->srate, "source", &massink->srate_source);
+    if (err < 0) {
+      massink->srate_source = 0;
+      GST_DEBUG ("Failed to get source port from srate device");
+      return FALSE;
+    }
+
+    GST_DEBUG ("Connecting to srate.");
+
+    dc = masc_make_audio_basic_dc (MAS_LINEAR_FMT,
+        massink->frequency, 16, 2, MAS_HOST_ENDIAN_FMT);
+    mas_assert (dc != 0, "Memory allocation error");
+
+    err =
+        mas_asm_connect_source_sink (massink->open_source, massink->srate_sink,
+        dc);
+    masc_strike_dc (dc);
+    masc_rtfree (dc);
+
+    if (err < 0) {
+      GST_DEBUG ("Failed to connect to srate");
+      return FALSE;
+    }
+
+
+    massink->open_source = massink->srate_source;
+  }
+
+  GST_DEBUG ("Connecting to mix.");
+
+  dc = masc_make_audio_basic_dc (MAS_LINEAR_FMT,
+      44100, 16, 2, MAS_HOST_ENDIAN_FMT);
+  mas_assert (dc != 0, "Memory allocation error");
+  err =
+      mas_asm_connect_source_sink (massink->open_source, massink->mix_sink, dc);
+  masc_strike_dc (dc);
+  masc_rtfree (dc);
+
+  if (err < 0) {
+    GST_DEBUG ("Failed to connect to mixer");
+    return FALSE;
+  }
+
+  massink->data.segment = masc_rtalloc (MASSINK_BUFFER_SIZE);
+  massink->data.length = MASSINK_BUFFER_SIZE;
+  massink->data.allocated_length = MASSINK_BUFFER_SIZE;
+
+  massink->data.header.type = 10;
+
+  massink->data.header.media_timestamp = 0;
+  massink->data.header.sequence = 0;
+
+  GST_FLAG_SET (massink, GST_MASSINK_OPEN);
+
+  return TRUE;
+}
+
+static void
+gst_massink_close_audio (GstMassink * massink)
+{
+  if (massink->mix_sink) {
+    mas_free_port (massink->mix_sink);
+    massink->mix_sink = 0;
+  }
+
+  if (massink->channelconv_source) {
+    mas_free_port (massink->channelconv_source);
+    massink->channelconv_source = 0;
+  }
+
+  if (massink->channelconv_sink) {
+    mas_free_port (massink->channelconv_sink);
+    massink->channelconv_sink = 0;
+  }
+
+  if (massink->srate_source) {
+    mas_free_port (massink->srate_source);
+    massink->srate_source = 0;
+  }
+
+  if (massink->srate_sink) {
+    mas_free_port (massink->srate_sink);
+    massink->srate_sink = 0;
+  }
+
+  if (massink->audio_source) {
+    mas_free_port (massink->audio_source);
+    massink->audio_source = 0;
+  }
+
+  if (massink->audio_sink) {
+    mas_free_port (massink->audio_sink);
+    massink->audio_sink = 0;
+  }
+
+  if (massink->endian_source) {
+    mas_free_port (massink->endian_source);
+    massink->endian_source = 0;
+  }
+
+  if (massink->endian_sink) {
+    mas_free_port (massink->endian_sink);
+    massink->endian_sink = 0;
+  }
+
+  if (massink->squant_source) {
+    mas_free_port (massink->squant_source);
+    massink->squant_source = 0;
+  }
+
+  if (massink->squant_sink) {
+    mas_free_port (massink->squant_sink);
+    massink->squant_sink = 0;
+  }
+
+  if (massink->channelconv) {
+    mas_free_device (massink->channelconv);
+    massink->channelconv = 0;
+  }
+
+  if (massink->endian) {
+    mas_free_device (massink->endian);
+    massink->endian = 0;
+  }
+
+  if (massink->srate) {
+    mas_free_device (massink->srate);
+    massink->srate = 0;
+  }
+
+  if (massink->squant) {
+    mas_free_device (massink->squant);
+    massink->squant = 0;
+  }
+
+  if (massink->audio_channel) {
+    mas_free_channel (massink->audio_channel);
+    massink->audio_channel = 0;
+  }
+
+  if (massink->data.segment) {
+    masc_rtfree (massink->data.segment);
+    memset (&massink->data, 0, sizeof (massink->data));
+  }
+
+  GST_FLAG_UNSET (massink, GST_MASSINK_OPEN);
+
+  GST_DEBUG ("massink: closed sound channel");
+}
+
+static GstElementStateReturn
+gst_massink_change_state (GstElement * element)
+{
+  g_return_val_if_fail (GST_IS_MASSINK (element), FALSE);
+
+  if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
+    if (GST_FLAG_IS_SET (element, GST_MASSINK_OPEN))
+      gst_massink_close_audio (GST_MASSINK (element));
+  } else {
+    if (!GST_FLAG_IS_SET (element, GST_MASSINK_OPEN)) {
+      if (!gst_massink_open_audio (GST_MASSINK (element))) {
+        gst_massink_close_audio (GST_MASSINK (element));
+        return GST_STATE_FAILURE;
+      }
+    }
+  }
+
+  if (GST_ELEMENT_CLASS (parent_class)->change_state)
+    return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+  return GST_STATE_SUCCESS;
+}

ext/mas/gstmassink.h

@@ -0,0 +1,101 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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_MASSINK_H__
+#define __GST_MASSINK_H__
+
+#include <gst/gst.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <mas/mas.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_MASSINK \
+  (gst_massink_get_type())
+#define GST_MASSINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MASSINK,GstMassink))
+#define GST_MASSINK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MASSINK,GstMassink))
+#define GST_IS_MASSINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MASSINK))
+#define GST_IS_MASSINK_CLASS(obj) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MASSINK))
+
+typedef enum {
+  GST_MASSINK_OPEN            = GST_ELEMENT_FLAG_LAST,
+  GST_MASSINK_FLAG_LAST       = GST_ELEMENT_FLAG_LAST+2,
+} GstMasSinkFlags;
+
+typedef struct _GstMassink GstMassink;
+typedef struct _GstMassinkClass GstMassinkClass;
+
+struct _GstMassink {
+  GstElement element;
+
+  GstPad *sinkpad;
+
+  gboolean mute;
+  gint depth;
+  gint channels;
+  gint frequency;
+  gint endianness;
+
+  /* MAS Data Structures */
+  mas_channel_t audio_channel;
+  mas_port_t    mix_sink;
+  mas_port_t  	channelconv_source, channelconv_sink;
+  mas_port_t    srate_source, srate_sink;
+  mas_port_t    audio_source, audio_sink;
+  mas_port_t    endian_sink, endian_source;
+  mas_port_t    squant_sink, squant_source;
+  mas_port_t    open_source; /* (!) */
+  mas_device_t  channelconv;
+  mas_device_t  endian;
+  mas_device_t  srate;
+  mas_device_t  squant;
+ 
+  struct mas_data data; 
+  GstClock *clock;
+};
+
+struct _GstMassinkClass {
+  GstElementClass parent_class;
+};
+
+GType gst_massink_get_type(void);
+
+
+#define MASSINK_DEFAULT_DEPTH 	  16
+#define MASSINK_DEFAULT_CHANNELS  2
+#define MASSINK_DEFAULT_FREQUENCY 44100
+#define MASSINK_BUFFER_SIZE  	  10240
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_MASSINK_H__ */