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  1. JDK
  2. JDK-4635286

MidiSystem.getMidiFileFormat() returns format having invalid length

    Details

    • Subcomponent:
    • Resolved In Build:
      hopper
    • CPU:
      generic
    • OS:
      generic

      Description



      Name: vtR10009 Date: 02/08/2002


        API spec for the method getByteLength() of the class
      javax.sound.midi.MidiFileFormat reads:
        "Obtains the length of the MIDI file, expressed in 8-bit bytes."
        
        But MidiSystem.getMidiFileFormat() creates MidiFileFormat instance that
      contains wrong length and method getByteLength() returns -1.

      This bug causes failure of new JCK test:
       api/javax_sound/midi/MidiSystem/index.html#getFile

      To reproduce the bug put the file "metatest.mid" in current dir and run the
      following test with JDK 1.4.0-rc-b90 build:
      ------------------------------- test.java --------------------------------
      import javax.sound.midi.*;
      import java.io.*;

      public class test{
          public static void main(String args[])
          {
              String fName = "metatest.mid";
              boolean failed = false;

              try {
                  File file = new File(args[0], fName);
                  MidiFileFormat mff = MidiSystem.getMidiFileFormat(file);
                  if (mff.getByteLength() != file.length()) {
                      System.err.println("Wrong length in format: " +
      mff.getByteLength());
                      System.err.println("Actual length, in bytes: " + file.length());
                      failed = true;
                  }
                  if (mff.getResolution() != 0xF0) {
                      System.err.println("Wrong Resolution in format: " +
      mff.getResolution());
                      failed = true;
                  }
                  if (mff.getType() != 1) {
                      System.err.println("Wrong format type: " + mff.getType());
                      failed = true;
                  }
              } catch (InvalidMidiDataException invMidiEx) {
                  System.err.println("Caught InvalidMidiDataException: " + invMidiEx);
                  invMidiEx.printStackTrace();
                  failed = true;
              } catch (IOException ioEx) {
                  System.err.println("Unexpected IOException was caught!");
                  System.err.println(ioEx.getMessage());
                  ioEx.printStackTrace();
                  failed = true;
              }
              
              if( failed ) {
                  System.err.println("Test failed!");
              } else {
                  System.out.println("OKAY");
              }
              System.exit(0);
          }
      }
      ---------------------------Logs-------------------------------------------
      $ javac test.java
      $ java -showversion test .
      java version "1.4.0-rc"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-rc-b90)
      Java HotSpot(TM) Client VM (build 1.4.0-rc-b90, mixed mode)

      Wrong length in format: -1
      Actual length, in bytes: 4252
      Test failed!
      --------------------------------------------------------------------------
      ======================================================================

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              • Assignee:
                fbomerssunw Florian Bomers (Inactive)
                Reporter:
                vitcsunw Vitc Vitc (Inactive)
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