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Diffstat (limited to 'songdbj/org/tritonus/file/AiffAudioFileReader.java')
-rw-r--r--songdbj/org/tritonus/file/AiffAudioFileReader.java244
1 files changed, 0 insertions, 244 deletions
diff --git a/songdbj/org/tritonus/file/AiffAudioFileReader.java b/songdbj/org/tritonus/file/AiffAudioFileReader.java
deleted file mode 100644
index 139ba05425..0000000000
--- a/songdbj/org/tritonus/file/AiffAudioFileReader.java
+++ /dev/null
@@ -1,244 +0,0 @@
-/*
- * AiffAudioFileReader.java
- *
- * This file is part of Tritonus: http://www.tritonus.org/
- */
-
-/*
- * Copyright (c) 2000 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 org.tritonus.share.sampled.file.TAudioFileFormat;
-import org.tritonus.share.sampled.file.TAudioFileReader;
-import org.tritonus.share.TDebug;
-
-
-/** Class for reading AIFF and AIFF-C files.
- *
- * @author Florian Bomers
- * @author Matthias Pfisterer
- */
-public class AiffAudioFileReader extends TAudioFileReader
-{
- private static final int READ_LIMIT = 1000;
-
-
-
- public AiffAudioFileReader()
- {
- super(READ_LIMIT);
- }
-
-
-
- private void skipChunk(DataInputStream dataInputStream, int chunkLength, int chunkRead)
- throws IOException {
- chunkLength-=chunkRead;
- if (chunkLength>0) {
- dataInputStream.skip(chunkLength + (chunkLength % 2));
- }
- }
-
- private AudioFormat readCommChunk(DataInputStream dataInputStream, int chunkLength)
- throws IOException, UnsupportedAudioFileException {
-
- int nNumChannels = dataInputStream.readShort();
- if (nNumChannels <= 0) {
- throw new UnsupportedAudioFileException(
- "not an AIFF file: number of channels must be positive");
- }
- if (TDebug.TraceAudioFileReader) {
- TDebug.out("Found "+nNumChannels+" channels.");
- }
- // ignored: frame count
- dataInputStream.readInt();
- int nSampleSize = dataInputStream.readShort();
- float fSampleRate = (float) readIeeeExtended(dataInputStream);
- if (fSampleRate <= 0.0) {
- throw new UnsupportedAudioFileException(
- "not an AIFF file: sample rate must be positive");
- }
- if (TDebug.TraceAudioFileReader) {
- TDebug.out("Found framerate "+fSampleRate);
- }
- AudioFormat.Encoding encoding = AudioFormat.Encoding.PCM_SIGNED;
- int nRead=18;
- if (chunkLength>nRead) {
- int nEncoding=dataInputStream.readInt();
- nRead+=4;
- if (nEncoding==AiffTool.AIFF_COMM_PCM) {
- // PCM - nothing to do
- }
- else if (nEncoding==AiffTool.AIFF_COMM_ULAW) {
- // ULAW
- encoding=AudioFormat.Encoding.ULAW;
- nSampleSize=8;
- }
- else if (nEncoding==AiffTool.AIFF_COMM_IMA_ADPCM) {
- encoding = new AudioFormat.Encoding("IMA_ADPCM");
- nSampleSize=4;
- }
- else {
- throw new UnsupportedAudioFileException(
- "Encoding 0x"+Integer.toHexString(nEncoding)
- +" of AIFF file not supported");
- }
- }
- /* In case of IMA ADPCM, frame size is 0.5 bytes (since it is
- always mono). A value of 1 as frame size would be wrong.
- Handling of frame size 0 in defined nowhere. So the best
- solution is to set the frame size to unspecified (-1).
- */
- int nFrameSize = (nSampleSize == 4) ?
- AudioSystem.NOT_SPECIFIED :
- calculateFrameSize(nSampleSize, nNumChannels);
- if (TDebug.TraceAudioFileReader) { TDebug.out("calculated frame size: " + nFrameSize); }
- skipChunk(dataInputStream, chunkLength, nRead);
- AudioFormat format = new AudioFormat(encoding,
- fSampleRate,
- nSampleSize,
- nNumChannels,
- nFrameSize,
- fSampleRate,
- true);
- return format;
- }
-
- private void readVerChunk(DataInputStream dataInputStream, int chunkLength)
- throws IOException, UnsupportedAudioFileException {
- if (chunkLength<4) {
- throw new UnsupportedAudioFileException(
- "Corrput AIFF file: FVER chunk too small.");
- }
- int nVer=dataInputStream.readInt();
- if (nVer!=AiffTool.AIFF_FVER_TIME_STAMP) {
- throw new UnsupportedAudioFileException(
- "Unsupported AIFF file: version not known.");
- }
- skipChunk(dataInputStream, chunkLength, 4);
- }
-
-
-
- protected AudioFileFormat getAudioFileFormat(InputStream inputStream, long lFileSizeInBytes)
- throws UnsupportedAudioFileException, IOException
- {
- if (TDebug.TraceAudioFileReader) {TDebug.out("AiffAudioFileReader.getAudioFileFormat(InputStream, long): begin"); }
- DataInputStream dataInputStream = new DataInputStream(inputStream);
- int nMagic = dataInputStream.readInt();
- if (nMagic != AiffTool.AIFF_FORM_MAGIC) {
- throw new UnsupportedAudioFileException(
- "not an AIFF file: header magic is not FORM");
- }
- int nTotalLength = dataInputStream.readInt();
- nMagic = dataInputStream.readInt();
- boolean bIsAifc;
- if (nMagic == AiffTool.AIFF_AIFF_MAGIC) {
- bIsAifc = false;
- } else if (nMagic == AiffTool.AIFF_AIFC_MAGIC) {
- bIsAifc = true;
- } else {
- throw new UnsupportedAudioFileException(
- "unsupported IFF file: header magic neither AIFF nor AIFC");
- }
- boolean bFVerFound=!bIsAifc;
- boolean bCommFound=false;
- boolean bSSndFound=false;
- AudioFormat format=null;
- int nDataChunkLength=0;
-
- // walk through the chunks
- // chunks may be in any order. However, in this implementation, SSND must be last
- while (!bFVerFound || !bCommFound || !bSSndFound) {
- nMagic = dataInputStream.readInt();
- int nChunkLength = dataInputStream.readInt();
- switch (nMagic) {
- case AiffTool.AIFF_COMM_MAGIC:
- format=readCommChunk(dataInputStream, nChunkLength);
- if (TDebug.TraceAudioFileReader) {
- TDebug.out("Read COMM chunk with length "+nChunkLength);
- }
- bCommFound=true;
- break;
- case AiffTool.AIFF_FVER_MAGIC:
- if (!bFVerFound) {
- readVerChunk(dataInputStream, nChunkLength);
- if (TDebug.TraceAudioFileReader) {
- TDebug.out("Read FVER chunk with length "+nChunkLength);
- }
- bFVerFound=true;
- } else {
- skipChunk(dataInputStream, nChunkLength, 0);
- }
- break;
- case AiffTool.AIFF_SSND_MAGIC:
- if (!bCommFound || !bFVerFound) {
- throw new UnsupportedAudioFileException(
- "cannot handle AIFF file: SSND not last chunk");
- }
- bSSndFound=true;
- nDataChunkLength=nChunkLength-8;
- // 8 information bytes of no interest
- dataInputStream.skip(8);
- if (TDebug.TraceAudioFileReader) {
- TDebug.out("Found SSND chunk with length "+nChunkLength);
- }
- break;
- default:
- if (TDebug.TraceAudioFileReader) {
- TDebug.out("Skipping unknown chunk: "
- +Integer.toHexString(nMagic));
- }
- skipChunk(dataInputStream, nChunkLength, 0);
- break;
- }
- }
-
- // TODO: length argument has to be in frames
- AudioFileFormat audioFileFormat = new TAudioFileFormat(
- bIsAifc ? AudioFileFormat.Type.AIFC : AudioFileFormat.Type.AIFF,
- format,
- nDataChunkLength / format.getFrameSize(),
- nTotalLength + 8);
- if (TDebug.TraceAudioFileReader) {TDebug.out("AiffAudioFileReader.getAudioFileFormat(InputStream, long): end"); }
- return audioFileFormat;
- }
-}
-
-
-
-/*** AiffAudioFileReader.java ***/
generated by cgit (git 2.34.1) at 2024-04-16 06:52:27 +0000