Songdb java version, source. only 1.5 compatible

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7101 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 185 insertions, 0 deletions

diff --git a/songdbj/org/tritonus/file/AuAudioFileReader.java b/songdbj/org/tritonus/file/AuAudioFileReader.java
new file mode 100644
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+++ b/songdbj/org/tritonus/file/AuAudioFileReader.java
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+/*
+ *      AuAudioFileReader.java
+ *
+ *      This file is part of Tritonus: http://www.tritonus.org/
+ */
+
+/*
+ *  Copyright (c) 1999,2000,2001 by Florian Bomers <http://www.bomers.de>
+ *  Copyright (c) 1999 by Matthias Pfisterer
+ *
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Library General Public License as published
+ *   by the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program 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 Library General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Library General Public
+ *   License along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/*
+|<---            this code is formatted to fit into 80 columns             --->|
+*/
+
+package org.tritonus.sampled.file;
+
+import java.io.DataInputStream;
+import java.io.File;
+import java.io.InputStream;
+import java.io.IOException;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioFileFormat;
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.UnsupportedAudioFileException;
+import javax.sound.sampled.spi.AudioFileReader;
+
+import org.tritonus.share.TDebug;
+import org.tritonus.share.sampled.file.TAudioFileFormat;
+import org.tritonus.share.sampled.file.TAudioFileReader;
+
+
+/** Class for reading Sun/Next AU files.
+ *
+ * @author Florian Bomers
+ * @author Matthias Pfisterer
+ */
+public class AuAudioFileReader extends TAudioFileReader
+{
+        private static final int        READ_LIMIT = 1000;
+
+
+
+        public AuAudioFileReader()
+        {
+                super(READ_LIMIT);
+        }
+
+
+
+        private static String readDescription(DataInputStream dis, int len) throws IOException {
+                byte c=-1;
+                String ret="";
+                while (len>0 && (c=dis.readByte())!=0) {
+                        ret=ret+(char) c;
+                        len--;
+                }
+                if (len>1 && c==0) {
+                        dis.skip(len-1);
+                }
+                return ret;
+        }
+
+
+
+        protected AudioFileFormat getAudioFileFormat(InputStream inputStream, long lFileSizeInBytes)
+                throws UnsupportedAudioFileException, IOException
+        {
+                if (TDebug.TraceAudioFileReader) {TDebug.out("AuAudioFileReader.getAudioFileFormat(InputStream, long): begin"); }
+                DataInputStream dataInputStream = new DataInputStream(inputStream);
+                int     nMagic = dataInputStream.readInt();
+                if (nMagic != AuTool.AU_HEADER_MAGIC) {
+                        throw new UnsupportedAudioFileException(
+                            "not an AU file: wrong header magic");
+                }
+                int nDataOffset = dataInputStream.readInt();
+                if (TDebug.TraceAudioFileReader) {
+                        TDebug.out("AuAudioFileReader.getAudioFileFormat(): data offset: " + nDataOffset);
+                }
+                if (nDataOffset < AuTool.DATA_OFFSET) {
+                        throw new UnsupportedAudioFileException(
+                            "not an AU file: data offset must be 24 or greater");
+                }
+                int nDataLength = dataInputStream.readInt();
+                if (TDebug.TraceAudioFileReader) {
+                        TDebug.out("AuAudioFileReader.getAudioFileFormat(): data length: " + nDataLength);
+                }
+                if (nDataLength < 0 && nDataLength!=AuTool.AUDIO_UNKNOWN_SIZE) {
+                        throw new UnsupportedAudioFileException(
+                            "not an AU file: data length must be positive, 0 or -1 for unknown");
+                }
+                AudioFormat.Encoding encoding = null;
+                int nSampleSize = 0;
+                int nEncoding = dataInputStream.readInt();
+                switch (nEncoding) {
+                case AuTool.SND_FORMAT_MULAW_8:         // 8-bit uLaw G.711
+                        encoding = AudioFormat.Encoding.ULAW;
+                        nSampleSize = 8;
+                        break;
+
+                case AuTool.SND_FORMAT_LINEAR_8:
+                        encoding = AudioFormat.Encoding.PCM_SIGNED;
+                        nSampleSize = 8;
+                        break;
+
+                case AuTool.SND_FORMAT_LINEAR_16:
+                        encoding = AudioFormat.Encoding.PCM_SIGNED;
+                        nSampleSize = 16;
+                        break;
+
+                case AuTool.SND_FORMAT_LINEAR_24:
+                        encoding = AudioFormat.Encoding.PCM_SIGNED;
+                        nSampleSize = 24;
+                        break;
+
+                case AuTool.SND_FORMAT_LINEAR_32:
+                        encoding = AudioFormat.Encoding.PCM_SIGNED;
+                        nSampleSize = 32;
+                        break;
+
+                case AuTool.SND_FORMAT_ALAW_8:  // 8-bit aLaw G.711
+                        encoding = AudioFormat.Encoding.ALAW;
+                        nSampleSize = 8;
+                        break;
+                }
+                if (nSampleSize == 0) {
+                        throw new UnsupportedAudioFileException(
+                            "unsupported AU file: unknown encoding " + nEncoding);
+                }
+                int nSampleRate = dataInputStream.readInt();
+                if (nSampleRate <= 0) {
+                        throw new UnsupportedAudioFileException(
+                            "corrupt AU file: sample rate must be positive");
+                }
+                int nNumChannels = dataInputStream.readInt();
+                if (nNumChannels <= 0) {
+                        throw new UnsupportedAudioFileException(
+                            "corrupt AU file: number of channels must be positive");
+                }
+                // skip header information field
+                inputStream.skip(nDataOffset - AuTool.DATA_OFFSET);
+                // read header info field
+                //String desc=readDescription(dataInputStream, nDataOffset - AuTool.DATA_OFFSET);
+
+                AudioFormat format = new AudioFormat(encoding,
+                                                     (float) nSampleRate,
+                                                     nSampleSize,
+                                                     nNumChannels,
+                                                     calculateFrameSize(nSampleSize, nNumChannels),
+                                                     (float) nSampleRate,
+                                                     true);
+                AudioFileFormat audioFileFormat = new TAudioFileFormat(
+                        AudioFileFormat.Type.AU,
+                        format,
+                        (nDataLength==AuTool.AUDIO_UNKNOWN_SIZE)?
+                        AudioSystem.NOT_SPECIFIED:(nDataLength / format.getFrameSize()),
+                        (nDataLength==AuTool.AUDIO_UNKNOWN_SIZE)?
+                        AudioSystem.NOT_SPECIFIED:(nDataLength + nDataOffset));
+                if (TDebug.TraceAudioFileReader) { TDebug.out("AuAudioFileReader.getAudioFileFormat(InputStream, long): begin"); }
+                return audioFileFormat;
+        }
+}
+
+
+
+/*** AuAudioFileReader.java ***/
+