// Copyright 2002 Nokia Corporation. // // THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER, // EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS // FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE // OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE // ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO // OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR // SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE // RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT // OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED // BY THIRD PARTIES // // Furthermore, information provided in this source code is preliminary, // and may be changed substantially prior to final release. Nokia Corporation // retains the right to make changes to this source code at // any time, without notice. This source code is provided for informational // purposes only. // // Nokia and Nokia Connecting People are registered trademarks of Nokia// Corporation.// Java and all Java-based marks are trademarks or registered trademarks of// Sun Microsystems, Inc.// Other product and company names mentioned herein may be trademarks or// trade names of their respective owners.// // A non-exclusive, non-transferable, worldwide, limited license is hereby // granted to the Licensee to download, print, reproduce and modify the // source code. The licensee has the right to market, sell, distribute and // make available the source code in original or modified form only when // incorporated into the programs developed by the Licensee. No other // license, express or implied, by estoppel or otherwise, to any other // intellectual property rights is granted herein.// unnamed packageimport javax.microedition.lcdui.*;import javax.microedition.media.*;import javax.microedition.media.control.*;import java.io.*;public class MediaList    extends List    implements CommandListener, PlayerListener{    private final MediaSamplerMIDlet midlet;    private final String wavFile;    private final String midiFile;    private final String amrFile;    private final Command playCommand;    private final Command stopCommand;    private final Command exitCommand;    private Player player;    private boolean playing = false;    MediaList(MediaSamplerMIDlet midlet,              String amrFile,              String wavFile,              String midiFile)    {        super("Media Sampler", IMPLICIT);        this.midlet = midlet;        this.amrFile = amrFile;        this.wavFile = wavFile;        this.midiFile = midiFile;        append("PlayTone", null);        append("ToneControl", null);        append("AMR", null);        append("WAV", null);        append("MIDI", null);        append("Video", null);        playCommand = new Command("Play", Command.ITEM, 2);        stopCommand = new Command("Stop", Command.ITEM, 2);        exitCommand = new Command("Exit", Command.EXIT, 1);        addCommand(playCommand);        addCommand(exitCommand);        setCommandListener(this);    }    public void commandAction(Command cmd, Displayable disp)    {        if ((cmd == playCommand) ||            ((cmd == List.SELECT_COMMAND) && !playing))        {            int index = getSelectedIndex();            if (index != -1)  // -1 means nothing selected            {                String selected = getString(index);                if (selected.equals("PlayTone"))                {                    playTone();                }                else if (selected.equals("ToneControl"))                {                    playToneControl();                }                else if (selected.equals("AMR"))                {                    play(amrFile, "audio/AMR");                }                else if (selected.equals("WAV"))                {                    play(wavFile, "audio/x-wav");                }                else if (selected.equals("MIDI"))                {                    play(midiFile, "audio/midi");                }                else if (selected.equals("Video"))                {                    midlet.listSelectVideo();                }            }        }        else if ((cmd == stopCommand) ||                 ((cmd == List.SELECT_COMMAND) && playing))        {            stop();        }        else if (cmd == exitCommand)        {            midlet.listExit();        }    }    void stop()    {        if (player != null)        {            player.close();        }    }    private void playTone()    {        try        {            Manager.playTone(ToneControl.C4, 500, 100);        }        catch (MediaException me)        {            midlet.alertError("MediaException: " + me.getMessage());        }    }    private void playToneControl()    {        byte[] sequence =        {            ToneControl.VERSION, 1,            ToneControl.TEMPO, 30,     // times 4 = 120 beats-per-minute            ToneControl.C4, 16,            ToneControl.C4 + 2, 16,    // D4            ToneControl.C4 + 4, 16,    // E4            ToneControl.C4 + 5, 16,    // F4   (note E# does not exist)            ToneControl.C4 + 7, 16,    // G4            ToneControl.C4 + 9, 16,    // A4            ToneControl.C4 + 11, 16,   // B4            ToneControl.C4 + 9, 8,     // A4            ToneControl.C4 + 7, 8,     // G4            ToneControl.C4 + 5, 8,     // F4   (note E# does not exist)            ToneControl.C4 + 4, 8,     // E4            ToneControl.C4 + 2, 8,     // D4            ToneControl.C4, 8,        };        try        {            player = Manager.createPlayer(Manager.TONE_DEVICE_LOCATOR);            player.addPlayerListener(this);            player.realize();            ToneControl tc = (ToneControl)(player.getControl("ToneControl"));            tc.setSequence(sequence);            player.start();            playingStarted();        }        catch (IOException ioe)        {            discardPlayer();            midlet.alertError("IOException: " + ioe.getMessage());        }        catch (MediaException me)        {            discardPlayer();            midlet.alertError("MediaException: " + me.getMessage());        }        catch (SecurityException se)        {            discardPlayer();            midlet.alertError("SecurityException: " + se.getMessage());        }    }    // Called in case of exception to make sure invalid players are closed    private void discardPlayer()    {        if (player != null)        {            player.close();            player = null;        }    }    private void play(String file, String type)    {        if (file == null)        {            midlet.alertError("No file specified for type " + type);        }        else        {            try            {                InputStream is = getClass().getResourceAsStream(file);                player = Manager.createPlayer(is, type);                player.addPlayerListener(this);                player.realize();                player.start();                playingStarted();            }            catch (IOException ioe)            {                discardPlayer();                midlet.alertError("IOException: " + ioe.getMessage());            }            catch (MediaException me)            {                discardPlayer();                midlet.alertError("MediaException: " + me.getMessage());            }            catch (SecurityException se)            {                discardPlayer();                midlet.alertError("SecurityException: " + se.getMessage());            }        }    }    public void playerUpdate(final Player p,                             final String event,                             final Object eventData)    {        // queue a call to updateEvent in the user interface event queue        Display display = midlet.getDisplay();        display.callSerially(new Runnable() {            public void run()            {                MediaList.this.updateEvent(p, event, eventData);            }        });    }    private void updateEvent(Player p, String event, Object eventData)    {        if (event == END_OF_MEDIA)        {            p.close();        }        else if (event == CLOSED)        {            player = null;            playingStopped();        }    }    private void playingStarted()    {        removeCommand(playCommand);        addCommand(stopCommand);        playing = true;    }    private void playingStopped()    {        removeCommand(stopCommand);        addCommand(playCommand);        playing = false;    }}