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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java
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+/*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()));
+ }
+}