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1 files changed, 179 insertions, 0 deletions

diff --git a/libjava/classpath/javax/sound/sampled/spi/FormatConversionProvider.java b/libjava/classpath/javax/sound/sampled/spi/FormatConversionProvider.java
new file mode 100644
index 000000000..b9d3e9d10
--- /dev/null
+++ b/libjava/classpath/javax/sound/sampled/spi/FormatConversionProvider.java
@@ -0,0 +1,179 @@
+/* Format conversion API
+   Copyright (C) 2005 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 javax.sound.sampled.spi;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioInputStream;
+
+/**
+ * A format conversion provider supplies methods for converting between
+ * different audio formats.  This abstract class defines the interface
+ * to this functionality; concrete subclasses will implement the methods
+ * declared here.
+ * @since 1.3
+ */
+public abstract class FormatConversionProvider
+{
+  /**
+   * Create a new format conversion provider.
+   */
+  public FormatConversionProvider()
+  {
+  }
+
+  /**
+   * Return an audio input stream given the desired target encoding and
+   * another audio input stream.  The data in the given stream will be
+   * converted to the desired encoding.
+   * @param encoding the encoding
+   * @param source the source audio input stream
+   * @return a new audio input stream
+   * @throws IllegalArgumentException if the conversion is not supported
+   */
+  public abstract AudioInputStream getAudioInputStream(AudioFormat.Encoding encoding,
+                                                       AudioInputStream source);
+
+  /**
+   * Return an audio input stream given the desired target format and
+   * another audio input stream.  The data in the given stream will be
+   * converted to the desired format.
+   * @param format the format
+   * @param source the source audio input stream
+   * @return a new audio input stream
+   * @throws IllegalArgumentException if the conversion is not supported
+   */
+  public abstract AudioInputStream getAudioInputStream(AudioFormat format,
+                                                       AudioInputStream source);
+
+  /**
+   * Return an array of all the source encodings supported by this conversion
+   * provider.
+   */
+  public abstract AudioFormat.Encoding[] getSourceEncodings();
+
+  /**
+   * Return an array of all the target encodings supported by this conversion
+   * provider.
+   */
+  public abstract AudioFormat.Encoding[] getTargetEncodings();
+
+  /**
+   * Return an array of all the target encodings that are available for a given
+   * source format.
+   * @param fmt the source format
+   * @return an array of supported target encodings
+   */
+  public abstract AudioFormat.Encoding[] getTargetEncodings(AudioFormat fmt);
+
+  /**
+   * Return a array of all the target formats that match given target encoding,
+   * and to which this provider can convert the source format.
+   * @param targ the target encoding to match
+   * @param src the source format
+   * @return an array of supported target formats
+   */
+  public abstract AudioFormat[] getTargetFormats(AudioFormat.Encoding targ,
+                                                 AudioFormat src);
+
+  /**
+   * Return true if this provider supports conversion from the given
+   * source format to the given target encoding.
+   * @param targ the target encoding
+   * @param src the source format
+   * @return true if the conversion is supported
+   */
+  public boolean isConversionSupported(AudioFormat.Encoding targ,
+                                       AudioFormat src)
+  {
+    AudioFormat.Encoding[] encodings = getTargetEncodings(src);
+    for (int i = 0; i < encodings.length; ++i)
+      {
+        if (targ.equals(encodings[i]))
+          return true;
+      }
+    return false;
+  }
+
+  /**
+   * Return true if this provider supports conversions from the given
+   * source format to the given target format.
+   * @param targ the source format
+   * @param src the target format
+   * @return true if the conversion is supported
+   */
+  public boolean isConversionSupported(AudioFormat targ, AudioFormat src)
+  {
+    AudioFormat[] encodings = getTargetFormats(targ.getEncoding(), src);
+    return encodings.length > 0;
+  }
+
+  /**
+   * Return true if an encoding matching the argument is supported as a
+   * source encoding by this provider.
+   * @param src the source encoding
+   * @return true if it is supported
+   */
+  public boolean isSourceEncodingSupported(AudioFormat.Encoding src)
+  {
+    AudioFormat.Encoding[] srcs = getSourceEncodings();
+    for (int i = 0; i < srcs.length; ++i)
+      {
+        if (src.equals(srcs[i]))
+          return true;
+      }
+    return false;
+  }
+
+  /**
+   * Return true if an encoding matching the argument is supported as a
+   * target encoding by this provider.
+   * @param targ the target encoding
+   * @return true if it is supported
+   */
+  public boolean isTargetEncodingSupported(AudioFormat.Encoding targ)
+  {
+    AudioFormat.Encoding[] encodings = getTargetEncodings();
+    for (int i = 0; i < encodings.length; ++i)
+      {
+        if (targ.equals(encodings[i]))
+          return true;
+      }
+    return false;
+  }
+}