Source for gnu.javax.sound.sampled.gstreamer.lines.GstNativeDataLine

   1: /* GstNativeDataLine.java -- SourceDataLine implementation.
   2:  Copyright (C) 2007 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: package gnu.javax.sound.sampled.gstreamer.lines;
  39: 
  40: import gnu.classpath.Pointer;
  41: 
  42: import javax.sound.sampled.LineUnavailableException;
  43: 
  44: public class GstNativeDataLine
  45: {
  46:   public static final GstPipeline createSourcePipeline(int bufferSize)
  47:     throws LineUnavailableException
  48:   {
  49:     GstPipeline pipeline = new GstPipeline(bufferSize);
  50: 
  51:     pipeline.createForWrite();
  52: 
  53:     if (!setup_sink_pipeline(pipeline.getNativeClass()))
  54:       throw new LineUnavailableException("Line unavailable");
  55: 
  56:     return pipeline;
  57:   }
  58: 
  59:   /* native methods */
  60: 
  61:   /**
  62:    * Initialize the native peer and enables the object cache.
  63:    * It is meant to be used by the static initializer.
  64:    */
  65:   native static final private void init_id_cache();
  66: 
  67:   /**
  68:    * Setup a new GStreamer Pipeline
  69:    */
  70:   native static final private boolean setup_sink_pipeline(Pointer pipeline);
  71: 
  72:   static
  73:   {
  74:     System.loadLibrary("gstreamerpeer"); //$NON-NLS-1$
  75:     init_id_cache();
  76:   }
  77: }