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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java | |
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Diffstat (limited to 'libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java')
-rw-r--r-- | libjava/classpath/gnu/javax/sound/sampled/gstreamer/io/GstAudioFileReader.java | 185 |
1 files changed, 185 insertions, 0 deletions
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())); + } +} |