001/* MidiFileFormat.java -- Information about a MIDI file 002 Copyright (C) 2005 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package javax.sound.midi; 040 041/** 042 * Describe a MIDI file, including specifics about its type, length and timing. 043 * 044 * @author Anthony Green (green@redhat.com) 045 * @since 1.3 046 * 047 */ 048public class MidiFileFormat 049{ 050 /** 051 * The MIDI file type. This is either 0, 1 or 2. 052 * 053 * Type 0 files contain a single track and represents a single song 054 * performance. 055 * Type 1 may contain multiple tracks for a single song performance. 056 * Type 2 may contain multiple tracks, each representing a 057 * separate song performance. 058 * 059 * See http://en.wikipedia.org/wiki/MIDI#MIDI_file_formats for more 060 * information. 061 */ 062 protected int type; 063 064 /** 065 * The division type of the MIDI file. 066 */ 067 protected float divisionType; 068 069 /** 070 * The timing resolution of the MIDI file. 071 */ 072 protected int resolution; 073 074 /** 075 * The size of the MIDI file in bytes. 076 */ 077 protected int byteLength = UNKNOWN_LENGTH; 078 079 /** 080 * The length of the MIDI file in microseconds. 081 */ 082 protected long microsecondLength = UNKNOWN_LENGTH; 083 084 /** 085 * A special value indicating an unknown quantity. 086 */ 087 public static final int UNKNOWN_LENGTH = -1; // FIXME is this really -1? 088 089 /** 090 * Create a MidiFileFormat object from the given parameters. 091 * 092 * @param type the MIDI file type (0, 1, or 2) 093 * @param divisionType the MIDI file division type 094 * @param resolution the MIDI file timing resolution 095 * @param bytes the MIDI file size in bytes 096 * @param microseconds the MIDI file length in microseconds 097 */ 098 public MidiFileFormat(int type, float divisionType, 099 int resolution, int bytes, long microseconds) 100 { 101 this.type = type; 102 this.divisionType = divisionType; 103 this.resolution = resolution; 104 this.byteLength = bytes; 105 this.microsecondLength = microseconds; 106 } 107 108 /** 109 * Get the MIDI file type (0, 1, or 2). 110 * 111 * @return the MIDI file type (0, 1, or 2) 112 */ 113 public int getType() 114 { 115 return type; 116 } 117 118 /** 119 * Get the file division type. 120 * 121 * @return the file divison type 122 */ 123 public float getDivisionType() 124 { 125 return divisionType; 126 } 127 128 /** 129 * Get the file timing resolution. If the division type is PPQ, then this 130 * is value represents ticks per beat, otherwise it's ticks per frame (SMPTE). 131 * 132 * @return the timing resolution in ticks per beat or ticks per frame 133 */ 134 public int getResolution() 135 { 136 return resolution; 137 } 138 139 /** 140 * Get the file length in bytes. 141 * 142 * @return the file length in bytes or UNKNOWN_LENGTH 143 */ 144 public int getByteLength() 145 { 146 return byteLength; 147 } 148 149 /** 150 * Get the file length in microseconds. 151 * 152 * @return the file length in microseconds or UNKNOWN_LENGTH 153 */ 154 public long getMicrosecondLength() 155 { 156 return microsecondLength; 157 } 158}