/* * Copyright (c) 1999, 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.media.sound; import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.PipedInputStream;import java.io.PipedOutputStream;import java.io.ByteArrayOutputStream;import java.io.ByteArrayInputStream;import java.io.SequenceInputStream;import java.io.File;import java.io.FileOutputStream;import java.io.BufferedOutputStream;import java.io.InputStream;import java.io.IOException;import java.lang.IllegalArgumentException;import java.io.OutputStream;import java.util.Vector; import javax.sound.midi.MidiFileFormat;import javax.sound.midi.InvalidMidiDataException;import javax.sound.midi.MidiEvent;import javax.sound.midi.MetaMessage;import javax.sound.midi.MidiMessage;import javax.sound.midi.Sequence;import javax.sound.midi.ShortMessage;import javax.sound.midi.SysexMessage;import javax.sound.midi.Track;import javax.sound.midi.spi.MidiFileWriter; /** * MIDI file writer. * * @author Kara Kytle * @author Jan Borgersen */public class StandardMidiFileWriter extends MidiFileWriter { private static final int MThd_MAGIC = 0x4d546864; // 'MThd' private static final int MTrk_MAGIC = 0x4d54726b; // 'MTrk' private static final int ONE_BYTE = 1; private static final int TWO_BYTE = 2; private static final int SYSEX = 3; private static final int META = 4; private static final int ERROR = 5; private static final int IGNORE = 6; private static final int MIDI_TYPE_0 = 0; private static final int MIDI_TYPE_1 = 1; private static final int bufferSize = 16384; // buffersize for write private DataOutputStream tddos; // data output stream for track writing /** * MIDI parser types */ private static final int types[] = { MIDI_TYPE_0, MIDI_TYPE_1 }; /** * new */ public int[] getMidiFileTypes() { int[] localArray = new int[types.length]; System.arraycopy(types, 0, localArray, 0, types.length); return localArray; } /** * Obtains the file types that this provider can write from the * sequence specified. * @param sequence the sequence for which midi file type support * is queried * @return array of file types. If no file types are supported, * returns an array of length 0. */ public int[] getMidiFileTypes(Sequence sequence){ int typesArray[]; Track tracks[] = sequence.getTracks(); if( tracks.length==1 ) { typesArray = new int[2]; typesArray[0] = MIDI_TYPE_0; typesArray[1] = MIDI_TYPE_1; } else { typesArray = new int[1]; typesArray[0] = MIDI_TYPE_1; } return typesArray; } public boolean isFileTypeSupported(int type) { for(int i=0; i<types.length; i++) { if( type == types[i] ) { return true; } } return false; } public int write(Sequence in, int type, OutputStream out) throws IOException { byte [] buffer = null; int bytesRead = 0; long bytesWritten = 0; if( !isFileTypeSupported(type,in) ) { throw new IllegalArgumentException("Could not write MIDI file"); } // First get the fileStream from this sequence InputStream fileStream = getFileStream(type,in); if (fileStream == null) { throw new IllegalArgumentException("Could not write MIDI file"); } buffer = new byte[bufferSize]; while( (bytesRead = fileStream.read( buffer )) >= 0 ) { out.write( buffer, 0, (int)bytesRead ); bytesWritten += bytesRead; } // Done....return bytesWritten return (int) bytesWritten; } public int write(Sequence in, int type, File out) throws IOException { FileOutputStream fos = new FileOutputStream(out); // throws IOException int bytesWritten = write( in, type, fos ); fos.close(); return bytesWritten; } //================================================================================= private InputStream getFileStream(int type, Sequence sequence) throws IOException { Track tracks[] = sequence.getTracks(); int bytesBuilt = 0; int headerLength = 14; int length = 0; int timeFormat; float divtype; PipedOutputStream hpos = null; DataOutputStream hdos = null; PipedInputStream headerStream = null; InputStream trackStreams [] = null; InputStream trackStream = null; InputStream fStream = null; // Determine the filetype to write if( type==MIDI_TYPE_0 ) { if (tracks.length != 1) { return null; } } else if( type==MIDI_TYPE_1 ) { if (tracks.length < 1) { // $$jb: 05.31.99: we _can_ write TYPE_1 if tracks.length==1 return null; } } else { if(tracks.length==1) { type = MIDI_TYPE_0; } else if(tracks.length>1) { type = MIDI_TYPE_1; } else { return null; } } // Now build the file one track at a time // Note that above we made sure that MIDI_TYPE_0 only happens // if tracks.length==1 trackStreams = new InputStream[tracks.length]; int trackCount = 0; for(int i=0; i<tracks.length; i++) { try { trackStreams[trackCount] = writeTrack( tracks[i], type ); trackCount++; } catch (InvalidMidiDataException e) { if(Printer.err) Printer.err("Exception in write: " + e.getMessage()); } //bytesBuilt += trackStreams[i].getLength(); } // Now seqence the track streams if( trackCount == 1 ) { trackStream = trackStreams[0]; } else if( trackCount > 1 ){ trackStream = trackStreams[0]; for(int i=1; i<tracks.length; i++) { // fix for 5048381: NullPointerException when saving a MIDI sequence // don't include failed track streams if (trackStreams[i] != null) { trackStream = new SequenceInputStream( trackStream, trackStreams[i]); } } } else { throw new IllegalArgumentException("invalid MIDI data in sequence"); } // Now build the header... hpos = new PipedOutputStream(); hdos = new DataOutputStream(hpos); headerStream = new PipedInputStream(hpos); // Write the magic number hdos.writeInt( MThd_MAGIC ); // Write the header length hdos.writeInt( headerLength - 8 ); // Write the filetype if(type==MIDI_TYPE_0) { hdos.writeShort( 0 ); } else { // MIDI_TYPE_1 hdos.writeShort( 1 ); } // Write the number of tracks hdos.writeShort( (short) trackCount ); // Determine and write the timing format divtype = sequence.getDivisionType(); if( divtype == Sequence.PPQ ) { timeFormat = sequence.getResolution(); } else if( divtype == Sequence.SMPTE_24) { timeFormat = (24<<8) * -1; timeFormat += (sequence.getResolution() & 0xFF); } else if( divtype == Sequence.SMPTE_25) { timeFormat = (25<<8) * -1; timeFormat += (sequence.getResolution() & 0xFF); } else if( divtype == Sequence.SMPTE_30DROP) { timeFormat = (29<<8) * -1; timeFormat += (sequence.getResolution() & 0xFF); } else if( divtype == Sequence.SMPTE_30) { timeFormat = (30<<8) * -1; timeFormat += (sequence.getResolution() & 0xFF); } else { // $$jb: 04.08.99: What to really do here? return null; } hdos.writeShort( timeFormat ); // now construct an InputStream to become the FileStream fStream = new SequenceInputStream(headerStream, trackStream); hdos.close(); length = bytesBuilt + headerLength; return fStream; } /** * Returns ONE_BYTE, TWO_BYTE, SYSEX, META, * ERROR, or IGNORE (i.e. invalid for a MIDI file) */ private int getType(int byteValue) { if ((byteValue & 0xF0) == 0xF0) { switch(byteValue) { case 0xF0: case 0xF7: return SYSEX; case 0xFF: return META; } return IGNORE; } switch(byteValue & 0xF0) { case 0x80: case 0x90: case 0xA0: case 0xB0: case 0xE0: return TWO_BYTE; case 0xC0: case 0xD0: return ONE_BYTE; } return ERROR; } private final static long mask = 0x7F; private int writeVarInt(long value) throws IOException { int len = 1; int shift=63; // number of bitwise left-shifts of mask // first screen out leading zeros while ((shift > 0) && ((value & (mask << shift)) == 0)) shift-=7; // then write actual values while (shift > 0) { tddos.writeByte((int) (((value & (mask << shift)) >> shift) | 0x80)); shift-=7; len++; } tddos.writeByte((int) (value & mask)); return len; } private InputStream writeTrack( Track track, int type ) throws IOException, InvalidMidiDataException { int bytesWritten = 0; int lastBytesWritten = 0; int size = track.size(); PipedOutputStream thpos = new PipedOutputStream(); DataOutputStream thdos = new DataOutputStream(thpos); PipedInputStream thpis = new PipedInputStream(thpos); ByteArrayOutputStream tdbos = new ByteArrayOutputStream(); tddos = new DataOutputStream(tdbos); ByteArrayInputStream tdbis = null; SequenceInputStream fStream = null; long currentTick = 0; long deltaTick = 0; long eventTick = 0; int runningStatus = -1; // ----------------------------- // Write each event in the track // ----------------------------- for(int i=0; i<size; i++) { MidiEvent event = track.get(i); int status; int eventtype; int metatype; int data1, data2; int length; byte data[] = null; ShortMessage shortMessage = null; MetaMessage metaMessage = null; SysexMessage sysexMessage = null; // get the tick // $$jb: this gets easier if we change all system-wide time to delta ticks eventTick = event.getTick(); deltaTick = event.getTick() - currentTick; currentTick = event.getTick(); // get the status byte status = event.getMessage().getStatus(); eventtype = getType( status ); switch( eventtype ) { case ONE_BYTE: shortMessage = (ShortMessage) event.getMessage(); data1 = shortMessage.getData1(); bytesWritten += writeVarInt( deltaTick ); if(status!=runningStatus) { runningStatus=status; tddos.writeByte(status); bytesWritten += 1; } tddos.writeByte(data1); bytesWritten += 1; break; case TWO_BYTE: shortMessage = (ShortMessage) event.getMessage(); data1 = shortMessage.getData1(); data2 = shortMessage.getData2(); bytesWritten += writeVarInt( deltaTick ); if(status!=runningStatus) { runningStatus=status; tddos.writeByte(status); bytesWritten += 1; } tddos.writeByte(data1); bytesWritten += 1; tddos.writeByte(data2); bytesWritten += 1; break; case SYSEX: sysexMessage = (SysexMessage) event.getMessage(); length = sysexMessage.getLength(); data = sysexMessage.getMessage(); bytesWritten += writeVarInt( deltaTick ); // $$jb: 04.08.99: always write status for sysex runningStatus=status; tddos.writeByte( data[0] ); bytesWritten += 1; // $$jb: 10.18.99: we don't maintain length in // the message data for SysEx (it is not transmitted // over the line), so write the calculated length // minus the status byte bytesWritten += writeVarInt( (data.length-1) ); // $$jb: 10.18.99: now write the rest of the // message tddos.write(data, 1, (data.length-1)); bytesWritten += (data.length-1); break; case META: metaMessage = (MetaMessage) event.getMessage(); length = metaMessage.getLength(); data = metaMessage.getMessage(); bytesWritten += writeVarInt( deltaTick ); // $$jb: 10.18.99: getMessage() returns the // entire valid midi message for a file, // including the status byte and the var-length-int // length value, so we can just write the data // here. note that we must _always_ write the // status byte, regardless of runningStatus. runningStatus=status; tddos.write( data, 0, data.length ); bytesWritten += data.length; break; case IGNORE: // ignore this event break; case ERROR: // ignore this event break; default: throw new InvalidMidiDataException("internal file writer error"); } } // --------------------------------- // End write each event in the track // --------------------------------- // Build Track header now that we know length thdos.writeInt(MTrk_MAGIC); thdos.writeInt(bytesWritten); bytesWritten += 8; // Now sequence them tdbis = new ByteArrayInputStream( tdbos.toByteArray() ); fStream = new SequenceInputStream(thpis,tdbis); thdos.close(); tddos.close(); return fStream; }}
/*
* Copyright (c) 1999, 2009, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.media.sound;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.ByteArrayInputStream;
import java.io.SequenceInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.BufferedOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.lang.IllegalArgumentException;
import java.io.OutputStream;
import java.util.Vector;
import javax.sound.midi.MidiFileFormat;
import javax.sound.midi.InvalidMidiDataException;
import javax.sound.midi.MidiEvent;
import javax.sound.midi.MetaMessage;
import javax.sound.midi.MidiMessage;
import javax.sound.midi.Sequence;
import javax.sound.midi.ShortMessage;
import javax.sound.midi.SysexMessage;
import javax.sound.midi.Track;
import javax.sound.midi.spi.MidiFileWriter;
/**
* MIDI file writer.
*
* @author Kara Kytle
* @author Jan Borgersen
*/
public class StandardMidiFileWriter extends MidiFileWriter {
private static final int MThd_MAGIC = 0x4d546864; // 'MThd'
private static final int MTrk_MAGIC = 0x4d54726b; // 'MTrk'
private static final int ONE_BYTE = 1;
private static final int TWO_BYTE = 2;
private static final int SYSEX = 3;
private static final int META = 4;
private static final int ERROR = 5;
private static final int IGNORE = 6;
private static final int MIDI_TYPE_0 = 0;
private static final int MIDI_TYPE_1 = 1;
private static final int bufferSize = 16384; // buffersize for write
private DataOutputStream tddos; // data output stream for track writing
/**
* MIDI parser types
*/
private static final int types[] = {
MIDI_TYPE_0,
MIDI_TYPE_1
};
/**
* new
*/
public int[] getMidiFileTypes() {
int[] localArray = new int[types.length];
System.arraycopy(types, 0, localArray, 0, types.length);
return localArray;
}
/**
* Obtains the file types that this provider can write from the
* sequence specified.
* @param sequence the sequence for which midi file type support
* is queried
* @return array of file types. If no file types are supported,
* returns an array of length 0.
*/
public int[] getMidiFileTypes(Sequence sequence){
int typesArray[];
Track tracks[] = sequence.getTracks();
if( tracks.length==1 ) {
typesArray = new int[2];
typesArray[0] = MIDI_TYPE_0;
typesArray[1] = MIDI_TYPE_1;
} else {
typesArray = new int[1];
typesArray[0] = MIDI_TYPE_1;
}
return typesArray;
}
public boolean isFileTypeSupported(int type) {
for(int i=0; i<types.length; i++) {
if( type == types[i] ) {
return true;
}
}
return false;
}
public int write(Sequence in, int type, OutputStream out) throws IOException {
byte [] buffer = null;
int bytesRead = 0;
long bytesWritten = 0;
if( !isFileTypeSupported(type,in) ) {
throw new IllegalArgumentException("Could not write MIDI file");
}
// First get the fileStream from this sequence
InputStream fileStream = getFileStream(type,in);
if (fileStream == null) {
throw new IllegalArgumentException("Could not write MIDI file");
}
buffer = new byte[bufferSize];
while( (bytesRead = fileStream.read( buffer )) >= 0 ) {
out.write( buffer, 0, (int)bytesRead );
bytesWritten += bytesRead;
}
// Done....return bytesWritten
return (int) bytesWritten;
}
public int write(Sequence in, int type, File out) throws IOException {
FileOutputStream fos = new FileOutputStream(out); // throws IOException
int bytesWritten = write( in, type, fos );
fos.close();
return bytesWritten;
}
//=================================================================================
private InputStream getFileStream(int type, Sequence sequence) throws IOException {
Track tracks[] = sequence.getTracks();
int bytesBuilt = 0;
int headerLength = 14;
int length = 0;
int timeFormat;
float divtype;
PipedOutputStream hpos = null;
DataOutputStream hdos = null;
PipedInputStream headerStream = null;
InputStream trackStreams [] = null;
InputStream trackStream = null;
InputStream fStream = null;
// Determine the filetype to write
if( type==MIDI_TYPE_0 ) {
if (tracks.length != 1) {
return null;
}
} else if( type==MIDI_TYPE_1 ) {
if (tracks.length < 1) { // $$jb: 05.31.99: we _can_ write TYPE_1 if tracks.length==1
return null;
}
} else {
if(tracks.length==1) {
type = MIDI_TYPE_0;
} else if(tracks.length>1) {
type = MIDI_TYPE_1;
} else {
return null;
}
}
// Now build the file one track at a time
// Note that above we made sure that MIDI_TYPE_0 only happens
// if tracks.length==1
trackStreams = new InputStream[tracks.length];
int trackCount = 0;
for(int i=0; i<tracks.length; i++) {
try {
trackStreams[trackCount] = writeTrack( tracks[i], type );
trackCount++;
} catch (InvalidMidiDataException e) {
if(Printer.err) Printer.err("Exception in write: " + e.getMessage());
}
//bytesBuilt += trackStreams[i].getLength();
}
// Now seqence the track streams
if( trackCount == 1 ) {
trackStream = trackStreams[0];
} else if( trackCount > 1 ){
trackStream = trackStreams[0];
for(int i=1; i<tracks.length; i++) {
// fix for 5048381: NullPointerException when saving a MIDI sequence
// don't include failed track streams
if (trackStreams[i] != null) {
trackStream = new SequenceInputStream( trackStream, trackStreams[i]);
}
}
} else {
throw new IllegalArgumentException("invalid MIDI data in sequence");
}
// Now build the header...
hpos = new PipedOutputStream();
hdos = new DataOutputStream(hpos);
headerStream = new PipedInputStream(hpos);
// Write the magic number
hdos.writeInt( MThd_MAGIC );
// Write the header length
hdos.writeInt( headerLength - 8 );
// Write the filetype
if(type==MIDI_TYPE_0) {
hdos.writeShort( 0 );
} else {
// MIDI_TYPE_1
hdos.writeShort( 1 );
}
// Write the number of tracks
hdos.writeShort( (short) trackCount );
// Determine and write the timing format
divtype = sequence.getDivisionType();
if( divtype == Sequence.PPQ ) {
timeFormat = sequence.getResolution();
} else if( divtype == Sequence.SMPTE_24) {
timeFormat = (24<<8) * -1;
timeFormat += (sequence.getResolution() & 0xFF);
} else if( divtype == Sequence.SMPTE_25) {
timeFormat = (25<<8) * -1;
timeFormat += (sequence.getResolution() & 0xFF);
} else if( divtype == Sequence.SMPTE_30DROP) {
timeFormat = (29<<8) * -1;
timeFormat += (sequence.getResolution() & 0xFF);
} else if( divtype == Sequence.SMPTE_30) {
timeFormat = (30<<8) * -1;
timeFormat += (sequence.getResolution() & 0xFF);
} else {
// $$jb: 04.08.99: What to really do here?
return null;
}
hdos.writeShort( timeFormat );
// now construct an InputStream to become the FileStream
fStream = new SequenceInputStream(headerStream, trackStream);
hdos.close();
length = bytesBuilt + headerLength;
return fStream;
}
/**
* Returns ONE_BYTE, TWO_BYTE, SYSEX, META,
* ERROR, or IGNORE (i.e. invalid for a MIDI file)
*/
private int getType(int byteValue) {
if ((byteValue & 0xF0) == 0xF0) {
switch(byteValue) {
case 0xF0:
case 0xF7:
return SYSEX;
case 0xFF:
return META;
}
return IGNORE;
}
switch(byteValue & 0xF0) {
case 0x80:
case 0x90:
case 0xA0:
case 0xB0:
case 0xE0:
return TWO_BYTE;
case 0xC0:
case 0xD0:
return ONE_BYTE;
}
return ERROR;
}
private final static long mask = 0x7F;
private int writeVarInt(long value) throws IOException {
int len = 1;
int shift=63; // number of bitwise left-shifts of mask
// first screen out leading zeros
while ((shift > 0) && ((value & (mask << shift)) == 0)) shift-=7;
// then write actual values
while (shift > 0) {
tddos.writeByte((int) (((value & (mask << shift)) >> shift) | 0x80));
shift-=7;
len++;
}
tddos.writeByte((int) (value & mask));
return len;
}
private InputStream writeTrack( Track track, int type ) throws IOException, InvalidMidiDataException {
int bytesWritten = 0;
int lastBytesWritten = 0;
int size = track.size();
PipedOutputStream thpos = new PipedOutputStream();
DataOutputStream thdos = new DataOutputStream(thpos);
PipedInputStream thpis = new PipedInputStream(thpos);
ByteArrayOutputStream tdbos = new ByteArrayOutputStream();
tddos = new DataOutputStream(tdbos);
ByteArrayInputStream tdbis = null;
SequenceInputStream fStream = null;
long currentTick = 0;
long deltaTick = 0;
long eventTick = 0;
int runningStatus = -1;
// -----------------------------
// Write each event in the track
// -----------------------------
for(int i=0; i<size; i++) {
MidiEvent event = track.get(i);
int status;
int eventtype;
int metatype;
int data1, data2;
int length;
byte data[] = null;
ShortMessage shortMessage = null;
MetaMessage metaMessage = null;
SysexMessage sysexMessage = null;
// get the tick
// $$jb: this gets easier if we change all system-wide time to delta ticks
eventTick = event.getTick();
deltaTick = event.getTick() - currentTick;
currentTick = event.getTick();
// get the status byte
status = event.getMessage().getStatus();
eventtype = getType( status );
switch( eventtype ) {
case ONE_BYTE:
shortMessage = (ShortMessage) event.getMessage();
data1 = shortMessage.getData1();
bytesWritten += writeVarInt( deltaTick );
if(status!=runningStatus) {
runningStatus=status;
tddos.writeByte(status); bytesWritten += 1;
}
tddos.writeByte(data1); bytesWritten += 1;
break;
case TWO_BYTE:
shortMessage = (ShortMessage) event.getMessage();
data1 = shortMessage.getData1();
data2 = shortMessage.getData2();
bytesWritten += writeVarInt( deltaTick );
if(status!=runningStatus) {
runningStatus=status;
tddos.writeByte(status); bytesWritten += 1;
}
tddos.writeByte(data1); bytesWritten += 1;
tddos.writeByte(data2); bytesWritten += 1;
break;
case SYSEX:
sysexMessage = (SysexMessage) event.getMessage();
length = sysexMessage.getLength();
data = sysexMessage.getMessage();
bytesWritten += writeVarInt( deltaTick );
// $$jb: 04.08.99: always write status for sysex
runningStatus=status;
tddos.writeByte( data[0] ); bytesWritten += 1;
// $$jb: 10.18.99: we don't maintain length in
// the message data for SysEx (it is not transmitted
// over the line), so write the calculated length
// minus the status byte
bytesWritten += writeVarInt( (data.length-1) );
// $$jb: 10.18.99: now write the rest of the
// message
tddos.write(data, 1, (data.length-1));
bytesWritten += (data.length-1);
break;
case META:
metaMessage = (MetaMessage) event.getMessage();
length = metaMessage.getLength();
data = metaMessage.getMessage();
bytesWritten += writeVarInt( deltaTick );
// $$jb: 10.18.99: getMessage() returns the
// entire valid midi message for a file,
// including the status byte and the var-length-int
// length value, so we can just write the data
// here. note that we must _always_ write the
// status byte, regardless of runningStatus.
runningStatus=status;
tddos.write( data, 0, data.length );
bytesWritten += data.length;
break;
case IGNORE:
// ignore this event
break;
case ERROR:
// ignore this event
break;
default:
throw new InvalidMidiDataException("internal file writer error");
}
}
// ---------------------------------
// End write each event in the track
// ---------------------------------
// Build Track header now that we know length
thdos.writeInt(MTrk_MAGIC);
thdos.writeInt(bytesWritten);
bytesWritten += 8;
// Now sequence them
tdbis = new ByteArrayInputStream( tdbos.toByteArray() );
fStream = new SequenceInputStream(thpis,tdbis);
thdos.close();
tddos.close();
return fStream;
}
}