1    package sound; 
2     
3    import javax.sound.midi.MidiFileFormat; 
4    import javax.sound.midi.Sequence; 
5    import java.awt.*; 
6     
7    // to get this to import on a mac, 
8    // add to the class path: 
9    // /System/Library/Frameworks/JavaVM.framework/Versions/1.3.1/Classes/ui.jar 
10    
11   public class MidiFileInfo { 
12       private static final int LOAD_METHOD_STREAM = 1; 
13       private static final int LOAD_METHOD_FILE = 2; 
14       private static final int LOAD_METHOD_URL = 3; 
15    
16       public static String getReadFile() { 
17           FileDialog fd = new FileDialog(new Frame(), "select a midifile"); 
18           fd.show(); 
19           fd.hide(); 
20           return fd.getDirectory() + fd.getFile(); 
21       } 
22    
23    
24       public static void main(String[] args) { 
25           int nLoadMethod = LOAD_METHOD_FILE; 
26           boolean bCheckSequence = false; 
27           int nCurrentArg = 0; 
28           String strSource = getReadFile(); 
29           String strFilename = strSource; 
30           MidiFileFormat fileFormat = null; 
31           Sequence sequence = null; 
32    
33           /* 
34            *  And now, we output the data. 
35            */ 
36           if (fileFormat == null) { 
37               System.out.println("Cannot determine format"); 
38           } else { 
39               System.out.println("---------------------------------------------------------------------------"); 
40               System.out.println("Source: " + strFilename); 
41               System.out.println("Midi File Type: " + fileFormat.getType()); 
42    
43               float fDivisionType = fileFormat.getDivisionType(); 
44               String strDivisionType = null; 
45               if (fDivisionType == Sequence.PPQ) { 
46                   strDivisionType = "PPQ"; 
47               } else if (fDivisionType == Sequence.SMPTE_24) { 
48                   strDivisionType = "SMPTE, 24 frames per second"; 
49               } else if (fDivisionType == Sequence.SMPTE_25) { 
50                   strDivisionType = "SMPTE, 25 frames per second"; 
51               } else if (fDivisionType == Sequence.SMPTE_30DROP) { 
52                   strDivisionType = "SMPTE, 29.97 frames per second"; 
53               } else if (fDivisionType == Sequence.SMPTE_30) { 
54                   strDivisionType = "SMPTE, 30 frames per second"; 
55               } 
56    
57               System.out.println("DivisionType: " + strDivisionType); 
58    
59               String strResolutionType = null; 
60               if (fileFormat.getDivisionType() == Sequence.PPQ) { 
61                   strResolutionType = " ticks per beat"; 
62               } else { 
63                   strResolutionType = " ticks per frame"; 
64               } 
65               System.out.println("Resolution: " + fileFormat.getResolution() + strResolutionType); 
66    
67               String strFileLength = null; 
68               if (fileFormat.getByteLength() != MidiFileFormat.UNKNOWN_LENGTH) { 
69                   strFileLength = "" + fileFormat.getByteLength() + " bytes"; 
70               } else { 
71                   strFileLength = "unknown"; 
72               } 
73               System.out.println("Length: " + strFileLength); 
74    
75               String strDuration = null; 
76               if (fileFormat.getMicrosecondLength() != MidiFileFormat.UNKNOWN_LENGTH) { 
77                   strDuration = "" + fileFormat.getMicrosecondLength() + " microseconds)"; 
78               } else { 
79                   strDuration = "unknown"; 
80               } 
81               System.out.println("Duration: " + strDuration); 
82    
83               if (bCheckSequence) { 
84                   System.out.println("[Sequence says:] Length: " + sequence.getTickLength() + " ticks (= " + sequence.getMicrosecondLength() + " us)"); 
85               } 
86               System.out.println("---------------------------------------------------------------------------"); 
87           } 
88       } 
89    
90   } 
91    
92    
93   /*** MidiFileInfo.java ***/ 
94