2007-07-08 Mario Torre <neugens@limasoftware.net>

	* gnu/javax/sound/sampled/gstreamer: new package hierarchy.
	* gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java: new file.
	* gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReaderNativePeer.java:
	likewise.
	* gnu/javax/sound/sampled/gstreamer/lines/GstDataLine.java: likewise.
	* gnu/javax/sound/sampled/gstreamer/GStreamerMixer.java: likewise.
	* gnu/javax/sound/sampled/gstreamer/GStreamerMixerProvider.java: likewise.
	* gnu/javax/sound/AudioSecurityManager.java: likewise.
	* gnu/javax/sound/sampled/gstreamer/lines/GstNativeDataLine.java: likewise.
	* gnu/javax/sound/sampled/gstreamer/lines/GstSourceDataLine.java: likewise.
	* gnu/javax/sound/sampled/gstreamer/lines/GstPipeline.java: likewise.
	* gnu/javax/sound/sampled/gstreamer/io/GstAudioFileWriter.java: likewise.
	* resource/META-INF/services/javax.sound.sampled.spi.AudioFileReader.in:
	likewise.
	* resource/META-INF/services/javax.sound.sampled.spi.MixerProvider.in:
	likewise.
	* resource/META-INF/services/javax.sound.sampled.spi.MixerProvider:
	likewise.
	* native/jni/gstreamer-peer/gstclasspathsrc.c: likewise.
	* native/jni/gstreamer-peer/gstclasspathsrc.h: likewise.
	* native/jni/gstreamer-peer/gstinputstream.c: likewise.
	* native/jni/gstreamer-peer/gstinputstream.h: likewise.
	* native/jni/gstreamer-peer/GStreamerIOPeer.c: likewise.
	* native/jni/gstreamer-peer/Makefile.am: likewise.
	* native/jni/gstreamer-peer/.cvsignore: likewise.
	* include/gnu_javax_sound_sampled_gstreamer_io_GstAudioFileReaderNativePeer.h:
	likewise.
	* include/Makefile.am: add gstreamer generated headers.
	* configure.ac: add gstreamer sound backend configuration.
	The backend is currently disabled by default.
	* native/jni/Makefile.am: code to allow compilation of the gstreamer
	sound backend.
	* javax/sound/sampled/spi/MixerProvider.java (isMixerSupported):
	indentation fixes.
	* javax/sound/sampled/AudioFormat.java (toString): fix method to display
	informations only when available.
	* javax/sound/sampled/DataLine.java:
	(Info.isFormatSupported):  indentation fixes.
	(Info):  indentation fixes.
	(Info.toString):  indentation fixes.
	(Info.matches):  indentation fixes.

10 files changed, 1261 insertions, 0 deletions

diff --git a/gnu/javax/sound/AudioSecurityManager.java b/gnu/javax/sound/AudioSecurityManager.java
new file mode 100644
index 000000000..cd10e5106
--- /dev/null
+++ b/gnu/javax/sound/AudioSecurityManager.java
@@ -0,0 +1,41 @@
+package gnu.javax.sound;
+
+import javax.sound.sampled.AudioPermission;
+
+public class AudioSecurityManager
+{
+  public static enum Permission
+  {
+    PLAY, RECORD, ALL
+  }
+  
+  public static final void checkPermissions()
+  {
+    checkPermissions(Permission.ALL);
+  }
+  
+  public static final void checkPermissions(Permission permission)
+  {
+    SecurityManager sm = System.getSecurityManager();
+    if (sm != null)
+      {
+        String perm = null;
+        switch (permission)
+          {
+          case PLAY:
+            perm = "play";
+            break;
+            
+          case RECORD:
+            perm = "record";
+            break;
+            
+          case ALL: default:
+            perm = "*";
+            break;
+          }
+        
+        sm.checkPermission(new AudioPermission(perm));
+      }
+  }
+}
diff --git a/gnu/javax/sound/sampled/gstreamer/GStreamerMixer.java b/gnu/javax/sound/sampled/gstreamer/GStreamerMixer.java
new file mode 100644
index 000000000..b32db0f35
--- /dev/null
+++ b/gnu/javax/sound/sampled/gstreamer/GStreamerMixer.java
@@ -0,0 +1,270 @@
+/* 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 java.awt.AWTPermission;
+
+import gnu.javax.sound.sampled.gstreamer.lines.GstSourceDataLine;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioPermission;
+import javax.sound.sampled.AudioSystem;
+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;
+import javax.sound.sampled.Line.Info;
+
+/**
+ * @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";
+  
+  private static AudioFormat[] BASIC_FORMATS =
+  {
+     new AudioFormat(AudioFormat.Encoding.PCM_UNSIGNED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     true),
+
+     new AudioFormat(AudioFormat.Encoding.PCM_UNSIGNED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     AudioSystem.NOT_SPECIFIED,
+                     false),
+  };
+  
+  /** 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/gnu/javax/sound/sampled/gstreamer/GStreamerMixerProvider.java b/gnu/javax/sound/sampled/gstreamer/GStreamerMixerProvider.java
new file mode 100644
index 000000000..61a8940e2
--- /dev/null
+++ b/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/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java b/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java
new file mode 100644
index 000000000..53b2155d8
--- /dev/null
+++ b/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java
@@ -0,0 +1,139 @@
+/*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 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
+  {
+    throw new UnsupportedAudioFileException("Unsupported encoding.");
+  }
+
+  @Override
+  public AudioFileFormat getAudioFileFormat(InputStream is)
+      throws UnsupportedAudioFileException, IOException
+  {
+    throw new UnsupportedAudioFileException("Unsupported encoding.");
+  }
+
+  @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)
+      {
+        // TODO Auto-generated catch block
+        e.printStackTrace();
+      }
+    
+    // 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/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReaderNativePeer.java b/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReaderNativePeer.java
new file mode 100644
index 000000000..45ae4ff85
--- /dev/null
+++ b/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReaderNativePeer.java
@@ -0,0 +1,276 @@
+/*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.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
+  {
+    GstHeader header = new GstHeader();
+    
+    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, stream))
+      return null;
+    
+    return getAudioFormat(header);
+  }
+  
+  public static AudioFormat getAudioFormat(URL url) throws Exception
+  {
+    GstHeader header = new GstHeader();
+    header.file = url.toExternalForm();
+    
+    BufferedInputStream stream = new BufferedInputStream(url.openStream());
+    if(!stream.markSupported()) 
+      throw new IOException("Stream must support marking."); 
+    
+    stream.mark(0);
+    
+    if (!gstreamer_get_audio_format_stream(header, stream))
+      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;
+      }
+    
+    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") ||
+        lowerCase.contains("x-au"))
+      {
+        frameSize = (sampleSizeInBits >> 3) * channels;
+        frameRate = sampleRate;
+      }
+    else if (lowerCase.contains("wav"))
+      {
+        frameSize = ((sampleSizeInBits + 7) / 8) * channels;
+        frameRate = sampleRate;
+      }
+    else if (lowerCase.contains("iff"))
+      {
+        frameSize = (sampleSizeInBits * channels) / 8;
+        frameRate = sampleRate;
+      }
+    
+    // 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);
+    
+    /* 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 file being played.
+   * 
+   * @param info
+   * @return
+   */
+  native static final
+  protected boolean gstreamer_get_audio_format_stream(GstHeader info,
+                                               BufferedInputStream istream);
+  
+  /**
+   * Retrieve header information about the file being played.
+   * 
+   * @param info
+   * @return
+   */
+  native static final
+  protected boolean gstreamer_get_audio_format_file(GstHeader info);
+  
+  static
+  {
+    System.loadLibrary("gstreamerpeer"); //$NON-NLS-1$
+  }
+}
diff --git a/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileWriter.java b/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileWriter.java
new file mode 100644
index 000000000..9b395dca2
--- /dev/null
+++ b/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/gnu/javax/sound/sampled/gstreamer/lines/GstDataLine.java b/gnu/javax/sound/sampled/gstreamer/lines/GstDataLine.java
new file mode 100644
index 000000000..0467c9559
--- /dev/null
+++ b/gnu/javax/sound/sampled/gstreamer/lines/GstDataLine.java
@@ -0,0 +1,145 @@
+/* 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.LineUnavailableException;
+import javax.sound.sampled.Control.Type;
+
+public abstract class GstDataLine
+    implements DataLine
+{
+  public static enum State
+  {
+    PLAY, PAUSE, STOP
+  }
+  
+  public static final int DEFAULT_BUFFER_SIZE = 1024;
+  
+  /** Represents the playing state of this Line. */
+  protected State state = State.STOP;
+  
+  /** 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 boolean isRunning()
+  {
+    return (state == State.PLAY || state == State.PAUSE);
+  }
+
+  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 open() throws LineUnavailableException
+  {
+    // TODO Auto-generated method stub
+
+  }
+
+  public void removeLineListener(LineListener listener)
+  {
+    // TODO Auto-generated method stub
+
+  }
+}
diff --git a/gnu/javax/sound/sampled/gstreamer/lines/GstNativeDataLine.java b/gnu/javax/sound/sampled/gstreamer/lines/GstNativeDataLine.java
new file mode 100644
index 000000000..2b41a1186
--- /dev/null
+++ b/gnu/javax/sound/sampled/gstreamer/lines/GstNativeDataLine.java
@@ -0,0 +1,48 @@
+/* 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;
+
+public class GstNativeDataLine
+{
+  
+  
+  static
+  {
+    System.loadLibrary("gstreamerpeer"); //$NON-NLS-1$
+  }
+}
diff --git a/gnu/javax/sound/sampled/gstreamer/lines/GstPipeline.java b/gnu/javax/sound/sampled/gstreamer/lines/GstPipeline.java
new file mode 100644
index 000000000..d1460e509
--- /dev/null
+++ b/gnu/javax/sound/sampled/gstreamer/lines/GstPipeline.java
@@ -0,0 +1,57 @@
+/* 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 gnu.classpath.Pointer;
+
+/**
+ * 
+ * @author Mario Torre <neugens@limasoftware.net>
+ */
+public class GstPipeline
+{
+  /**
+   * 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;
+
+  native private void setState();
+  
+}
diff --git a/gnu/javax/sound/sampled/gstreamer/lines/GstSourceDataLine.java b/gnu/javax/sound/sampled/gstreamer/lines/GstSourceDataLine.java
new file mode 100644
index 000000000..d1a0262e5
--- /dev/null
+++ b/gnu/javax/sound/sampled/gstreamer/lines/GstSourceDataLine.java
@@ -0,0 +1,134 @@
+/* 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 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
+{
+  public GstSourceDataLine(AudioFormat format)
+  {
+    super(format);
+  }
+
+  public void open(AudioFormat fmt) throws LineUnavailableException
+  {
+    AudioSecurityManager.checkPermissions(Permission.PLAY);
+    throw new LineUnavailableException("Line unavailable");
+  }
+
+  public void open(AudioFormat fmt, int size) throws LineUnavailableException
+  {
+    AudioSecurityManager.checkPermissions(Permission.PLAY);
+    throw new LineUnavailableException("Line unavailable");
+  }
+
+  public int write(byte[] buf, int offset, int length)
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+  public int available()
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+  public void drain()
+  {
+    // TODO Auto-generated method stub
+    
+  }
+
+  public void flush()
+  {
+    // TODO Auto-generated method stub
+    
+  }
+
+  public int getFramePosition()
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+  public long getLongFramePosition()
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+  public long getMicrosecondPosition()
+  {
+    // TODO Auto-generated method stub
+    return 0;
+  }
+
+  public boolean isActive()
+  {
+    // TODO Auto-generated method stub
+    return false;
+  }
+
+  public void start()
+  {
+    // TODO Auto-generated method stub
+    
+  }
+
+  public void stop()
+  {
+    // TODO Auto-generated method stub
+    
+  }
+
+  public void close()
+  {
+    // TODO Auto-generated method stub
+    
+  }
+
+}