obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
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10 files changed, 1783 insertions, 0 deletions

diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/GStreamerMixer.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/GStreamerMixer.java
new file mode 100644
index 000000000..1910ea655
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/GStreamerMixer.java
@@ -0,0 +1,248 @@
+/* GStreamerMixer.java -- Mixer implementation.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer;
+
+import gnu.javax.sound.sampled.gstreamer.lines.GstSourceDataLine;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.Control;
+import javax.sound.sampled.DataLine;
+import javax.sound.sampled.Line;
+import javax.sound.sampled.LineListener;
+import javax.sound.sampled.LineUnavailableException;
+import javax.sound.sampled.Mixer;
+import javax.sound.sampled.SourceDataLine;
+import javax.sound.sampled.Control.Type;
+
+/**
+ * @author Mario Torre <neugens@limasoftware.net>
+ */
+public class GStreamerMixer
+    implements Mixer
+{
+  public static class GstInfo extends Info
+  {
+    /* Mixer Properties */
+
+    /** Name */
+    private static final String name = "Classpath GStreamer Sound Audio Engine";
+
+    /** Vendor */
+    private static final String vendor = "GNU Classpath";
+
+    /** Description */
+    private static final String desc = "GStreamer-based software mixer";
+
+    /** Version */
+    private static final String vers = "0.0.1";
+
+    protected GstInfo()
+    {
+      super(name, vendor, desc, vers);
+    }
+  }
+
+  public static final String GST_BACKEND = GstInfo.name;
+  public static final String GST_DECODER = "decoder";
+  public static final String GST_TYPE_NAME = "type";
+  public static final String GST_FILE_EXTENSION = "ext";
+
+  /** Mixer Info */
+  private static final Mixer.Info INFO = new GStreamerMixer.GstInfo();
+
+  public Line getLine(Line.Info info)
+      throws LineUnavailableException
+  {
+    // get all the lines formats supported by this mixer and
+    // and see if there is one matching the given line
+    // if the format comes from the gstreamer backend
+    // gstreamer will be able to deal with it
+    Class clazz = info.getLineClass();
+    DataLine.Info _info = (DataLine.Info) info;
+
+    if (clazz == SourceDataLine.class)
+      {
+        for (AudioFormat format : _info.getFormats())
+          {
+            // see if we are a gstreamer child :)
+            if (format.properties().containsKey(GST_BACKEND));
+              {
+                // we got it
+                return new GstSourceDataLine(format);
+              }
+          }
+      }
+
+    // TODO: we also support basic PCM
+
+    throw new LineUnavailableException("Cannot open a line");
+  }
+
+  public int getMaxLines(Line.Info info)
+  {
+    // TODO
+    return 1;
+  }
+
+  public Info getMixerInfo()
+  {
+    return INFO;
+  }
+
+  public javax.sound.sampled.Line.Info[] getSourceLineInfo()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public Line.Info[] getSourceLineInfo(Line.Info info)
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public Line[] getSourceLines()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public javax.sound.sampled.Line.Info[] getTargetLineInfo()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public Line.Info[] getTargetLineInfo(Line.Info info)
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public Line[] getTargetLines()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public boolean isLineSupported(Line.Info info)
+  {
+    // We support any kind of mixer that comes
+    // from our gstreamer backend.
+    // In addition, we support PCM based audio streams for
+    // direct playback.
+    if (info instanceof DataLine.Info)
+      {
+        DataLine.Info _dinfo = (DataLine.Info) info;
+        _dinfo.getFormats();
+      }
+
+    return true;
+  }
+
+  public boolean isSynchronizationSupported(Line[] lines, boolean sync)
+  {
+    // TODO Auto-generated method stub
+    return false;
+  }
+
+  public void synchronize(Line[] lines, boolean sync)
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  public void unsynchronize(Line[] lines)
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  public void addLineListener(LineListener listener)
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  public void close()
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  public Control getControl(Type what)
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public Control[] getControls()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public javax.sound.sampled.Line.Info getLineInfo()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public boolean isControlSupported(Type what)
+  {
+    // TODO Auto-generated method stub
+    return false;
+  }
+
+  public boolean isOpen()
+  {
+    // TODO Auto-generated method stub
+    return false;
+  }
+
+  public void open() throws LineUnavailableException
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  public void removeLineListener(LineListener listener)
+  {
+    // TODO Auto-generated method stub
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/GStreamerMixerProvider.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/GStreamerMixerProvider.java
new file mode 100644
index 000000000..6a0d7faa7
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/GStreamerMixerProvider.java
@@ -0,0 +1,71 @@
+/*GStreamerMixerProvider -- GNU Classpath GStreamer Mixer provider.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer;
+
+import javax.sound.sampled.Mixer;
+import javax.sound.sampled.Mixer.Info;
+import javax.sound.sampled.spi.MixerProvider;
+
+/**
+ * Concrete provider class for GStreamerMixer.
+ *
+ * @author Mario Torre
+ */
+public class GStreamerMixerProvider
+    extends MixerProvider
+{
+  private static final GStreamerMixer mixer = new GStreamerMixer();
+
+  @Override
+  public Mixer getMixer(Info info)
+  {
+    if (info.equals(mixer.getMixerInfo()))
+      return mixer;
+
+    throw new
+      IllegalArgumentException("This provider cannot handle a mixer or type: "
+                               + info.getName());
+  }
+
+  @Override
+  public Info[] getMixerInfo()
+  {
+    Info[] info = { mixer.getMixerInfo() };
+    return info;
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java
new file mode 100644
index 000000000..26fb12b09
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java
@@ -0,0 +1,185 @@
+/*GstAudioFileReader -- GNU Classpath GStreamer AudioFileReader.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer.io;
+
+import gnu.java.lang.CPStringBuilder;
+
+import gnu.javax.sound.sampled.gstreamer.GStreamerMixer;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import javax.sound.sampled.AudioFileFormat;
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.UnsupportedAudioFileException;
+import javax.sound.sampled.spi.AudioFileReader;
+
+/**
+ * An implementation of a general AudioFileReader. Uses GStreamer to
+ * parse and retrieve informations about the file passed as input.
+ *
+ * @author Mario Torre <neugens@limasoftware.net>
+ */
+public class GstAudioFileReader
+    extends AudioFileReader
+{
+  @Override
+  public AudioFileFormat getAudioFileFormat(File file)
+      throws UnsupportedAudioFileException, IOException
+  {
+    CPStringBuilder name = new CPStringBuilder(file.getName());
+    String _name = name.substring(name.lastIndexOf(".") + 1);
+
+    return getAudioFileFormat(
+               new BufferedInputStream(new FileInputStream(file)), _name);
+  }
+
+  @Override
+  public AudioFileFormat getAudioFileFormat(InputStream is)
+      throws UnsupportedAudioFileException, IOException
+  {
+    return getAudioFileFormat(is, null);
+  }
+
+  private AudioFileFormat getAudioFileFormat(InputStream is, String extension)
+    throws UnsupportedAudioFileException
+    {
+      AudioFormat format = null;
+      try
+        {
+          format = GstAudioFileReaderNativePeer.getAudioFormat(is);
+        }
+      catch (Exception e)
+        {
+          UnsupportedAudioFileException ex =
+            new UnsupportedAudioFileException("Unsupported encoding.");
+
+          ex.initCause(ex.getCause());
+          throw ex;
+        }
+
+      if (format == null)
+        throw new UnsupportedAudioFileException("Unsupported encoding.");
+
+      String name = format.getProperty(GStreamerMixer.GST_DECODER).toString();
+
+      if (extension == null)
+        {
+          extension =
+            format.getProperty(GStreamerMixer.GST_FILE_EXTENSION).toString();
+        }
+
+      AudioFileFormat.Type type =
+        new AudioFileFormat.Type(name, extension);
+
+      // TODO: we should calculate this in some way. We don't need it, but
+      // application may want to use this data.
+      return new AudioFileFormat(type, format, AudioSystem.NOT_SPECIFIED);
+    }
+
+  @Override
+  public AudioFileFormat getAudioFileFormat(URL url)
+      throws UnsupportedAudioFileException, IOException
+  {
+    return getAudioFileFormat(new BufferedInputStream(url.openStream()));
+  }
+
+  @Override
+  public AudioInputStream getAudioInputStream(File file)
+      throws UnsupportedAudioFileException, IOException
+  {
+    InputStream stream = new FileInputStream(file);
+    long length = file.length();
+
+    AudioFormat format = null;
+
+    try
+      {
+        format = GstAudioFileReaderNativePeer.getAudioFormat(file);
+      }
+    catch (Exception e)
+      {
+        UnsupportedAudioFileException ex =
+          new UnsupportedAudioFileException("Unsupported encoding.");
+
+        ex.initCause(ex.getCause());
+        throw ex;
+      }
+
+    // get the header size
+    if (format == null)
+      throw new UnsupportedAudioFileException("Unsupported encoding.");
+
+    return new AudioInputStream(stream, format, length);
+  }
+
+  @Override
+  public AudioInputStream getAudioInputStream(InputStream is)
+      throws UnsupportedAudioFileException, IOException
+  {
+    AudioFormat format = null;
+
+    try
+      {
+        format = GstAudioFileReaderNativePeer.getAudioFormat(is);
+      }
+    catch (Exception e)
+      {
+        // TODO Auto-generated catch block
+        e.printStackTrace();
+      }
+
+    // get the header size
+    if (format == null)
+      throw new UnsupportedAudioFileException("Unsupported encoding.");
+
+    return new AudioInputStream(is, format, AudioSystem.NOT_SPECIFIED);
+  }
+
+  @Override
+  public AudioInputStream getAudioInputStream(URL url)
+      throws UnsupportedAudioFileException, IOException
+  {
+    return getAudioInputStream(new BufferedInputStream(url.openStream()));
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReaderNativePeer.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReaderNativePeer.java
new file mode 100644
index 000000000..6345d7654
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReaderNativePeer.java
@@ -0,0 +1,284 @@
+/*GstAudioFileReaderNativePeer -- GNU Classpath GStreamer AudioFileReader
+  native peer class.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer.io;
+
+import gnu.classpath.Pointer;
+import gnu.javax.sound.sampled.gstreamer.GStreamerMixer;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.AudioFormat.Encoding;
+
+/**
+ * GStreamer native peer for GstAudioFileReader.
+ *
+ * @author Mario Torre <neugens@limasoftware.net>
+ */
+final class GstAudioFileReaderNativePeer
+{
+  private static final String GST_ENCODING = "GStreamer Generic Audio Reader";
+
+  private static class GstHeader
+  {
+    /*
+     * NOTE: these properties are accessed by the native code, be careful
+     * if you change them.
+     * Not all the fields are necessarily set.
+     *
+     */
+    public String file = null;
+
+    public String suffix = null;
+
+    public String name = null;
+
+    public String mimetype = null;
+
+    public String endianness = null;
+
+    public String channels = null;
+
+    public String rate = null;
+
+    public String width = null;
+
+    public String depth = null;
+
+    public String isSigned = null;
+
+    public String layer = null;
+
+    public String bitrate = null;
+
+    public String framed = null;
+
+    public String type = null;
+  }
+
+  public static AudioFormat getAudioFormat(File file) throws Exception
+  {
+    GstHeader header = new GstHeader();
+    header.file = file.getAbsolutePath();
+
+    if (!gstreamer_get_audio_format_file(header))
+      return null;
+
+    return getAudioFormat(header);
+  }
+
+  public static AudioFormat getAudioFormat(InputStream is) throws Exception
+  {
+    return getAudioFormat(is, new GstHeader());
+  }
+
+  public static AudioFormat getAudioFormat(URL url) throws Exception
+  {
+    GstHeader header = new GstHeader();
+    header.file = url.toExternalForm();
+
+    return getAudioFormat(url.openStream(), header);
+  }
+
+  private static AudioFormat getAudioFormat(InputStream is, GstHeader header)
+      throws Exception
+  {
+    BufferedInputStream stream = new BufferedInputStream(is);
+    if(!stream.markSupported())
+      throw new IOException("Stream must support marking.");
+
+    stream.mark(0);
+
+    if (!gstreamer_get_audio_format_stream(header, new GstInputStream(stream).
+                                           getNativeClass()))
+      return null;
+
+    return getAudioFormat(header);
+  }
+
+  private static Encoding getEncoding(GstHeader header)
+  {
+    StringBuilder buffer = new StringBuilder();
+
+    if (header.name == null)
+      {
+        buffer.append(GST_ENCODING);
+        if (header.mimetype != null)
+          {
+            buffer.append(" ");
+            buffer.append(header.mimetype);
+          }
+
+        header.name = buffer.toString();
+      }
+    else
+      {
+        // strip the "decoder" word from the name, if any
+        // this is a bit ugly, the alternative would be to still output the
+        // full name of the decoder/demuxer
+        String lowerCase = header.name.toLowerCase();
+        int index = lowerCase.indexOf("decoder");
+        if (index == -1)
+          {
+            index = lowerCase.indexOf("demuxer");
+          }
+
+        if (index == -1)
+          index = lowerCase.length();
+
+        buffer.append(header.name.substring(0, index));
+
+      }
+
+    return new Encoding(buffer.toString().trim());
+  }
+
+  private static AudioFormat getAudioFormat(GstHeader header)
+    throws Exception
+  {
+    int na = AudioSystem.NOT_SPECIFIED;
+
+    /* we use mimetype as an header, but this could have some side effects */
+    Encoding encoding = getEncoding(header);
+
+    float sampleRate = ((header.rate != null) ?
+                         new Float(header.rate).floatValue() : na);
+
+    int sampleSizeInBits = ((header.depth != null) ?
+                             new Integer(header.depth).intValue() : na);
+
+    int channels = ((header.channels != null) ?
+                     new Integer(header.channels).intValue() : na);
+
+    boolean bigEndian = false;
+    if (header.endianness != null)
+      {
+        if (header.endianness.compareTo("4321") == 0)
+          bigEndian = true;
+      }
+
+    String ext = null;
+
+    int frameSize = na;
+    float frameRate = na;
+    String lowerCase = header.name.toLowerCase();
+
+    // FIXME: frameRate = sampleRate in these cases under all the tests so far
+    // but I'm not sure if this is always correct...
+    if (lowerCase.contains("law") || lowerCase.contains("au"))
+      {
+        frameSize = (sampleSizeInBits >> 3) * channels;
+        frameRate = sampleRate;
+        ext = "au";
+      }
+    else if (lowerCase.contains("wav"))
+      {
+        frameSize = ((sampleSizeInBits + 7) / 8) * channels;
+        frameRate = sampleRate;
+        ext = "wav";
+      }
+    else if (lowerCase.contains("iff"))
+      {
+        frameSize = (sampleSizeInBits * channels) / 8;
+        frameRate = sampleRate;
+        ext = "aiff";
+      }
+
+    // write all the additional properties we got to identify
+    // the gstreamer plugin actually used to deal with this stream
+    Map<String, Object> properties = new HashMap<String, Object>();
+    properties.put(GStreamerMixer.GST_BACKEND, true);
+    properties.put(GStreamerMixer.GST_DECODER, header.name);
+    properties.put(GStreamerMixer.GST_TYPE_NAME, encoding.toString());
+    if (ext != null)
+      properties.put(GStreamerMixer.GST_FILE_EXTENSION, ext);
+
+    /* now we put in some of the additional properties if we have them */
+    if (header.type != null) properties.put("type", header.type);
+    if (header.framed != null) properties.put("framed", header.framed);
+    if (header.bitrate != null) properties.put("bitrate", header.bitrate);
+    if (header.isSigned != null) properties.put("isSigned", header.isSigned);
+    if (header.depth != null) properties.put("depth", header.depth);
+    if (header.mimetype != null) properties.put("mimetype", header.mimetype);
+
+    AudioFormat format = new AudioFormat(encoding,
+                                         sampleRate,
+                                         sampleSizeInBits,
+                                         channels,
+                                         frameSize,
+                                         frameRate,
+                                         bigEndian,
+                                         properties);
+    return format;
+  }
+
+  /* ***** native methods ***** */
+
+  /**
+   * Retrieve header information about the stream being played.
+   */
+  native static final
+  protected boolean gstreamer_get_audio_format_stream(GstHeader info,
+                                                      Pointer pointer);
+
+  /**
+   * Retrieve header information about the file being played.
+   */
+  native static final
+  protected boolean gstreamer_get_audio_format_file(GstHeader info);
+
+  /**
+   * Initialize the native peer and enables the object cache.
+   * It is meant to be used by the static initializer.
+   */
+  native private static final void init_id_cache();
+
+  static
+  {
+    System.loadLibrary("gstreamerpeer"); //$NON-NLS-1$
+    init_id_cache();
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileWriter.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileWriter.java
new file mode 100644
index 000000000..9b395dca2
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileWriter.java
@@ -0,0 +1,80 @@
+/*GstAudioFileWriter -- GNU Classpath GStreamer AudioFileReader.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+package gnu.javax.sound.sampled.gstreamer.io;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioFileFormat.Type;
+import javax.sound.sampled.spi.AudioFileWriter;
+
+public class GstAudioFileWriter
+    extends AudioFileWriter
+{
+  @Override
+  public Type[] getAudioFileTypes()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  @Override
+  public Type[] getAudioFileTypes(AudioInputStream ais)
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  @Override
+  public int write(AudioInputStream ais, Type type, File out)
+      throws IOException
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+  @Override
+  public int write(AudioInputStream ais, Type type, OutputStream os)
+      throws IOException
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstInputStream.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstInputStream.java
new file mode 100644
index 000000000..56bddcaad
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstInputStream.java
@@ -0,0 +1,119 @@
+/* GstInputStream.java -- Trampoline class for an InputStream, mean to be used
+ by native code.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer.io;
+
+import gnu.classpath.Pointer;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Encapsulates the functionality of an InputStream Object.
+ *
+ * This class is only meant to be used by the native code, to allow reading
+ * of the given InputStream as part of a the GStreamer InputStream Source
+ * Plugin.
+ *
+ * <strong>Note:</strong> this class will be not garbage collected as the
+ * native code contains strong references to internal fields.
+ * The native layer provides a method that can be called by the C code to
+ * free the resources and to let the garbage collected to handle this class
+ * when not needed anymore.
+ *
+ * @author Mario Torre <neugens@limasoftware.net>
+ */
+public class GstInputStream
+{
+  /** The real InputStream on which to perform reading operations. */
+  private InputStream istream;
+
+  /**
+   * Initialized in the native code, don't change without changes
+   * in the native layer.
+   */
+  private Pointer gstInputStream = null;
+
+  public GstInputStream(InputStream istream)
+  {
+    this.istream = istream;
+    init_instance();
+  }
+
+  public int read(byte[] buf, int off, int len) throws IOException
+  {
+    return this.istream.read(buf, off, len);
+  }
+
+  public int available() throws IOException
+  {
+    return this.istream.available();
+  }
+
+  /**
+   * Return a reference to the GstInputStream native class as a Pointer object.
+   * This method is intended as an helper accessor and the returned pointer
+   * needs to be casted and used in the native code only.
+   *
+   * @return Pointer to the native GstInputStream class.
+   */
+  public Pointer getNativeClass()
+  {
+    return this.gstInputStream;
+  }
+
+  /* native methods */
+
+  /**
+   * Initialize the native peer and enables the object cache.
+   * It is meant to be used by the class constructor.
+   */
+  native private final void init_instance();
+
+  /**
+   * Initialize the native peer and enables the object cache.
+   * It is meant to be used by the static initializer.
+   */
+  native private static final void init_id_cache();
+
+  static
+  {
+    System.loadLibrary("gstreamerpeer"); //$NON-NLS-1$
+    init_id_cache();
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstDataLine.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstDataLine.java
new file mode 100644
index 000000000..4e8cb1bb2
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstDataLine.java
@@ -0,0 +1,151 @@
+/* GstDataLine.java -- Abstract DataLine.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer.lines;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.Control;
+import javax.sound.sampled.DataLine;
+import javax.sound.sampled.LineListener;
+import javax.sound.sampled.Control.Type;
+
+public abstract class GstDataLine
+    implements DataLine
+{
+  public static final int DEFAULT_BUFFER_SIZE = 1024;
+
+  /** Represents if this Line is opened or not.  */
+  protected Boolean open = false;
+
+  private AudioFormat format = null;
+  private int bufferSize = 0;
+
+  public GstDataLine(AudioFormat format)
+  {
+    this.format = format;
+    this.bufferSize = DEFAULT_BUFFER_SIZE;
+  }
+
+  public GstDataLine(AudioFormat format, int bufferSize)
+  {
+    this.format = format;
+    this.bufferSize = bufferSize;
+  }
+
+  public int getBufferSize()
+  {
+    return this.bufferSize;
+  }
+
+  public AudioFormat getFormat()
+  {
+    return this.format;
+  }
+
+  public float getLevel()
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+  public void addLineListener(LineListener listener)
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  public Control getControl(Type what)
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public Control[] getControls()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public javax.sound.sampled.Line.Info getLineInfo()
+  {
+    // TODO Auto-generated method stub
+    return null;
+  }
+
+  public boolean isControlSupported(Type what)
+  {
+    return false;
+  }
+
+  public boolean isOpen()
+  {
+    // TODO Auto-generated method stub
+    return false;
+  }
+
+  public void removeLineListener(LineListener listener)
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  /* protected methods for subclasses */
+
+  /**
+   * @param open the open to set
+   */
+  protected void setOpen(Boolean open)
+  {
+    this.open = open;
+  }
+
+  /**
+   * @param bufferSize the bufferSize to set
+   */
+  protected void setBufferSize(int bufferSize)
+  {
+    this.bufferSize = bufferSize;
+  }
+
+  /**
+   * @param format the format to set
+   */
+  protected void setFormat(AudioFormat format)
+  {
+    this.format = format;
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstNativeDataLine.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstNativeDataLine.java
new file mode 100644
index 000000000..896f0cb85
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstNativeDataLine.java
@@ -0,0 +1,77 @@
+/* GstNativeDataLine.java -- SourceDataLine implementation.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer.lines;
+
+import gnu.classpath.Pointer;
+
+import javax.sound.sampled.LineUnavailableException;
+
+public class GstNativeDataLine
+{
+  public static final GstPipeline createSourcePipeline(int bufferSize)
+    throws LineUnavailableException
+  {
+    GstPipeline pipeline = new GstPipeline(bufferSize);
+
+    pipeline.createForWrite();
+
+    if (!setup_sink_pipeline(pipeline.getNativeClass()))
+      throw new LineUnavailableException("Line unavailable");
+
+    return pipeline;
+  }
+
+  /* native methods */
+
+  /**
+   * Initialize the native peer and enables the object cache.
+   * It is meant to be used by the static initializer.
+   */
+  native static final private void init_id_cache();
+
+  /**
+   * Setup a new GStreamer Pipeline
+   */
+  native static final private boolean setup_sink_pipeline(Pointer pipeline);
+
+  static
+  {
+    System.loadLibrary("gstreamerpeer"); //$NON-NLS-1$
+    init_id_cache();
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstPipeline.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstPipeline.java
new file mode 100644
index 000000000..9280e9f15
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstPipeline.java
@@ -0,0 +1,415 @@
+/* GstPipeline.java -- Represents a Gstreamer Pipeline.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer.lines;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.prefs.Preferences;
+
+import javax.sound.sampled.LineUnavailableException;
+
+import gnu.classpath.Pointer;
+
+/**
+ * This class represent a GStreamer pipeline and is resposible to handle the
+ * flow of data to and from the GStreamer native backend.
+ *
+ * @author Mario Torre <neugens@limasoftware.net>
+ */
+public class GstPipeline
+{
+  /*
+   * Implementation note:
+   * This class is at first a bit confusing as it serves as a gateway
+   * to a real filesystem named pipe.
+   * The pipelines is shared by the gstreamer backend and by the java code.
+   * If the operation we are performing is to play a given stream of bytes,
+   * we need to open the java side of the pipeline for writing, which is done
+   * in the prepareWrite method. At the same time, the native side of the code
+   * need to open the pipeline in read mode, to get access to the data,
+   * and hence, act as a source element. This is why you will see terms
+   * like "read" or "source" in methods that are used to write in the pipeline,
+   * in other words, each the native operation is the opposite of the java
+   * side operation.
+   * Opening the pipe to record audio data from the sound card works the same
+   * except that all the operation are inverted.
+   */
+
+  // These enums are used in the native code also, changes here must reflect
+  // changes in the native code.
+  public static enum State
+  {
+    PLAY, PAUSE, STOP, CLOSE
+  }
+
+  private static final int READ = 0;
+  private static final int WRITE = 1;
+  private static final int QUEUED = 1;
+
+  private static final String CAPACITY_KEY = "Capacity";
+
+  private static final Object [] lock = new Object[0];
+
+  /*
+   * Preference subsystem. We use this to store some system specific settings.
+   */
+  protected Preferences prefs =
+    Preferences.userNodeForPackage(GstPipeline.class).node("GStreamer");
+
+  // used by the native code, stores the size of the named pipeline
+  // created by the operating system.
+  private long capacity = -1;
+
+  /** Represents the playing state of this Line. */
+  private State state = State.STOP;
+
+  /** The name of the named pipe. */
+  // Will be setup and filled in the native code. See the native library
+  // for details.
+  private String name = null;
+
+  /** This is the named pipe that will be read by the gstreamer backend. */
+  private FileOutputStream output = null;
+
+  /**
+   * Defines if we are getting data from a sink pipe
+   * or writing to a source pipe.
+   */
+  private boolean source = true;
+
+  /** Indicate that we are ready to process audio data to/from the pipe. */
+  private boolean ready = false;
+
+  /**
+   * This is the native GStreamer Pipeline.
+   */
+  // This field is used by the native code, so any change to it must be
+  // followed by similar changes in the native peer.
+  private Pointer pipeline = null;
+
+  /**
+   * Creates a new GstPipeline with a capacity of
+   * {@link GstDataLine#DEFAULT_BUFFER_SIZE}.
+   *
+   * @see GstDataLine#DEFAULT_BUFFER_SIZE
+   */
+  public GstPipeline()
+  {
+    this(GstDataLine.DEFAULT_BUFFER_SIZE);
+  }
+
+  /**
+   * Creates a new GstPipeline with a capacity of bufferSize.
+   * @see GstDataLine#DEFAULT_BUFFER_SIZE
+   */
+  public GstPipeline(int bufferSize)
+  {
+    // see if we need to detect the size of the named pipe or we can use
+    // an already computet default for this system.
+    // Note that this is very different from the bufferSize parameter,
+    // see below.
+    capacity = prefs.getLong(CAPACITY_KEY, -1);
+    if (capacity == -1)
+      {
+        synchronized (lock)
+          {
+            capacity = detect_pipe_size();
+          }
+
+        prefs.putLong(CAPACITY_KEY, capacity);
+      }
+
+    // FIXME: bufferSize actually not used nor needed by the backend.
+    // Applications that expects a buffer of different size will be a
+    // bit disappointed by that..
+    init_instance();
+
+    // need to remove the named pipe in case of abnormal termination
+    Runtime.getRuntime().addShutdownHook(new CleanPipeline());
+  }
+
+  /**
+   * Creates a source pipeline. A source pipeline is a pipe you send data for
+   * processing using the write method.
+   */
+  public void createForWrite() throws LineUnavailableException
+  {
+    // create the named pipe
+    if (!create_named_pipe(this.pipeline))
+      throw new LineUnavailableException("Unable to create filesystem pipe");
+
+    open_native_pipe(this.pipeline, READ);
+    prepareWrite();
+
+    this.source = true;
+  }
+
+  /**
+   * @return the state
+   */
+  public State getState()
+  {
+    return this.state;
+  }
+
+  /**
+   * Closes this pipeline.
+   * Short hand for #setState(State.STOP).
+   */
+  public void close()
+  {
+    setState(State.STOP);
+  }
+
+  /**
+   * @param state the state to set
+   */
+  public void setState(final State state)
+  {
+    int _state = -1;
+    switch (state)
+      {
+        case PLAY:
+          _state = 0;
+          break;
+
+        case PAUSE:
+          _state = 1;
+          break;
+
+        case STOP: case CLOSE:
+          _state = 2;
+          closePipe();
+          break;
+      }
+
+    if (set_state(pipeline, _state))
+      GstPipeline.this.state = state;
+  }
+
+  /**
+   * Return a reference to the GstPipeline native class as a Pointer object.
+   * This method is intended as an helper accessor and the returned pointer
+   * needs to be casted and used in the native code only.
+   *
+   * @return Pointer to the native GstPipeline class.
+   */
+  public Pointer getNativeClass()
+  {
+    return this.pipeline;
+  }
+
+  /**
+   * Write length bytes from the given buffer into this pipeline,
+   * starting at offset.
+   * This method block if the pipeline can't accept more data.
+   *
+   * @param buffer
+   * @param offset
+   * @param length
+   * @return
+   */
+  public int write(byte[] buffer, int offset, int length)
+  {
+    if (this.state == State.STOP)
+      return -1;
+    else if (this.state == State.PAUSE)
+      return 0;
+    else if (!ready)
+      return -1;
+
+    try
+      {
+        if (output != null)
+          {
+            output.write(buffer, offset, length);
+            return length;
+          }
+        return 0;
+      }
+    catch (Exception e)
+      {
+        /* nothing to do */
+      }
+
+    return -1;
+  }
+
+  public int read(byte[] buffer, int offset, int length)
+  {
+    return 0;
+  }
+
+  public int available()
+  {
+    if (this.source)
+      return available(this.pipeline, READ);
+    else
+      return available(this.pipeline, WRITE);
+  }
+
+  /**
+   * Wait for remaining data to be enqueued in the pipeline.
+   */
+  public void drain()
+  {
+    if (this.state == State.STOP)
+      return;
+
+    try
+      {
+        // wait untill there is anymore data in the pipe
+        while (available(this.pipeline, QUEUED) > 0)
+          Thread.sleep(3000);
+
+        // plus a bit to allow data to be processed
+        Thread.sleep(1000);
+      }
+    catch (InterruptedException e)
+      {
+        /* nothing to do*/
+      }
+  }
+
+  /**
+   * Flush all the data currently waiting to be processed.
+   */
+  public void flush()
+  {
+    try
+      {
+        if (source)
+          this.output.flush();
+      }
+    catch (IOException e)
+      {
+        /* nothing */
+      }
+  }
+
+  private void closePipe()
+  {
+    try
+      {
+        GstPipeline.this.flush();
+        if (source)
+          GstPipeline.this.output.close();
+      }
+    catch (IOException e)
+      {
+        /* nothing to do */
+      }
+  }
+
+  private void prepareWrite()
+  {
+    try
+      {
+        // if this is not completed for some reason, we will catch
+        // in the write method. As this call can block, we assume we will
+        // succeed and that the dataline can get data.
+        GstPipeline.this.ready = true;
+        GstPipeline.this.output = new FileOutputStream(name);
+      }
+    catch (Exception e)
+      {
+        GstPipeline.this.ready = false;
+      }
+  }
+
+  /* ***** native ***** */
+
+  /**
+   * Initialize the native peer and enables the object cache.
+   * It is meant to be used by the static initializer.
+   */
+  native private static final void init_id_cache();
+
+  /**
+   * Set the playing state of this pipeline.
+   */
+  native private static final boolean set_state(Pointer pipeline, int state);
+
+  /**
+   * Get the number of bytes currently available for reading or writing
+   * from the pipeline.
+   */
+  native private static final int available(Pointer pipeline, int mode);
+
+  /**
+   * Open the native pipeline with the given mode.
+   */
+  native private static final void open_native_pipe(Pointer jpipeline,
+                                                    int mode);
+
+  /**
+   * Close the native pipeline.
+   */
+  native private static final void close_native_pipe(Pointer jpipeline);
+
+  /**
+   * Initialize the native peer and enables the object cache.
+   * It is meant to be used by the class constructor.
+   */
+  native private final void init_instance();
+
+  /**
+   * Crates the named pipe used to pass data between the application code
+   * and gstreamer.
+   */
+  native private final boolean create_named_pipe(Pointer jpipeline);
+
+  /**
+   * Detect and return the size of the filesystem named pipe.
+   */
+  native private final long detect_pipe_size();
+
+  private class CleanPipeline extends Thread
+  {
+    public void run()
+    {
+      GstPipeline.close_native_pipe(GstPipeline.this.pipeline);
+    }
+  }
+
+  static
+  {
+    System.loadLibrary("gstreamerpeer"); //$NON-NLS-1$
+    init_id_cache();
+  }
+}
diff --git a/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstSourceDataLine.java b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstSourceDataLine.java
new file mode 100644
index 000000000..2bc2de454
--- /dev/null
+++ b/libjava/classpath/gnu/javax/sound/sampled/gstreamer/lines/GstSourceDataLine.java
@@ -0,0 +1,153 @@
+/* GstSourceDataLine.java -- SourceDataLine implementation.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.sampled.gstreamer.lines;
+
+import gnu.javax.sound.AudioSecurityManager;
+import gnu.javax.sound.sampled.gstreamer.lines.GstPipeline.State;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.LineUnavailableException;
+import javax.sound.sampled.SourceDataLine;
+
+import static gnu.javax.sound.AudioSecurityManager.Permission;
+
+public class GstSourceDataLine
+    extends GstDataLine implements SourceDataLine
+{
+  private GstPipeline pipeline = null;
+  private boolean open = false;
+
+  public GstSourceDataLine(AudioFormat format)
+  {
+    super(format);
+  }
+
+  public void open() throws LineUnavailableException
+  {
+    AudioSecurityManager.checkPermissions(Permission.PLAY);
+
+    if (open)
+      throw new IllegalStateException("Line already opened");
+
+    // create the pipeline
+    pipeline = GstNativeDataLine.createSourcePipeline(getBufferSize());
+
+    this.open = true;
+  }
+
+  public void open(AudioFormat fmt) throws LineUnavailableException
+  {
+    AudioSecurityManager.checkPermissions(Permission.PLAY);
+
+    setFormat(fmt);
+    this.open();
+  }
+
+  public void open(AudioFormat fmt, int size) throws LineUnavailableException
+  {
+    AudioSecurityManager.checkPermissions(Permission.PLAY);
+
+    setBufferSize(size);
+    this.open(fmt);
+  }
+
+  public int write(byte[] buf, int offset, int length)
+  {
+    return this.pipeline.write(buf, offset, length);
+  }
+
+  public int available()
+  {
+    return this.pipeline.available();
+  }
+
+  public void drain()
+  {
+    this.pipeline.drain();
+  }
+
+  public void flush()
+  {
+    this.pipeline.flush();
+  }
+
+  public int getFramePosition()
+  {
+    System.out.println("getFramePosition -: IMPLEMENT ME!!");
+    return 0;
+  }
+
+  public long getLongFramePosition()
+  {
+    System.out.println("getLongFramePosition -: IMPLEMENT ME!!");
+    return 0;
+  }
+
+  public long getMicrosecondPosition()
+  {
+    System.out.println("getMicrosecondPosition -: IMPLEMENT ME!!");
+    return 0;
+  }
+
+  public boolean isActive()
+  {
+    State state = pipeline.getState();
+    return (state == State.PLAY || state == State.PAUSE);
+  }
+
+  public void start()
+  {
+    pipeline.setState(State.PLAY);
+  }
+
+  public void stop()
+  {
+    pipeline.setState(State.PAUSE);
+  }
+
+  public void close()
+  {
+    pipeline.close();
+    this.open = false;
+  }
+
+  public boolean isRunning()
+  {
+    return (pipeline.getState() == State.PLAY);
+  }
+}