Oracle Video Server 3.0.3.1/OracleVideoClient3.0.3.iso/java/ctntlist.java

Java Source | 1998-01-28 | 5.6 KB | 220 lines

// Copyright (c) Oracle Corporation 1997.  All Rights Reserved.
//
// Package oracle.ovc - Oracle Video Client for Java
//
// CtntList.java - This example demonstrates the ContentQuery feature.
//

// Sun JDK Imports
import java.awt.*;
import java.awt.event.*;


// Oracle Video Client Imports
import oracle.ovc.*;

public class CtntList extends WindowAdapter
                      implements PlayerListener, ItemListener
{
  Player      player            = null;
  Component   playerUI          = null;
  Frame       playerframe       = null;
  StmOpts     m_opts            = null;
  String      m_MediaFile       = null;
  boolean     m_Loop            = true;
  boolean     m_AutoStart       = false;
  String      m_PlayTo          = "end";
  String      m_PlayFrom        = "beginning";
  String      m_oldState        = null;
  Choice      choice;

  public static void main (String args[])
  {
    CtntList app = new CtntList ();
    app.playerframe = new Frame ("CtntList");

    app.playerframe.setBackground(Color.lightGray);
    app.playerframe.setSize(360, 340);
    app.playerframe.addWindowListener(app);

    app.addPlayer();

    try
    {
      app.player.addListener (app);
    }
    catch (PlayerException e)
    {
      System.out.println("addListener() failed: " + e);
    }

    app.addContentList();

    app.m_MediaFile = app.choice.getSelectedItem();
    if (app.m_MediaFile != null)
    {
      System.out.println(" loading: " + app.m_MediaFile);
      app.loadMediaFile();
    }
  }

  public void addContentList()
  {
    int i;
    StmInfo[] contentList;
    ContentIter iter;

    choice = new Choice();
    choice.addItemListener(this);
    playerframe.add("South",choice);
    playerframe.show();

    iter = new ContentIter(0, 10);

    try
    {
      while (iter.m_pos!=-1)
      {
        System.out.println("calling query() with iter = { " +
                           iter.m_pos + " , " + iter.m_num + " }");
        contentList = Content.query(null,"*",iter);
        System.out.println("query() returned with iter = { " +
                           iter.m_pos + " , " + iter.m_num + " }");

        for(i=0; i<iter.m_num;i++)
          choice.addItem(contentList[i].m_url);
      }
    }
    catch ( ContentException e )
    {
      System.out.println("ContentException raised: " + e);
    }


  }

  // addPlayer() - create playback player and add to frame
  public void addPlayer()
  {
    // create player
    try
    {
      player = PlayerFactory.getPlayer ();
    }
    catch ( UnsatisfiedLinkError e )
    {
      System.out.println(e.getMessage());
    }
    catch ( PlayerException e )
    {
      System.out.println("Unable to create a Player object. " + e);
    }

    // init player UI
    try
    {
      playerUI = player.getPlayerUI ();
    }
    catch ( PlayerException e )
    {
      System.out.println("getPlayerUI failed: " + e);
    }

    //  Add the visual component of the player object to the frame
    playerframe.add (playerUI);
  }

  // itemStateChanged() - callback from Choice list
  public void itemStateChanged(ItemEvent event)
  {
    // note: only listening for choice box
    m_MediaFile = choice.getSelectedItem();

    System.out.println("loading: " + m_MediaFile);
    loadMediaFile();
  }

  // loadMediaFile() - routine to actual load stream for playback
  public void loadMediaFile()
  {
    m_opts             = new StmOpts();
    m_opts.m_loop      = m_Loop;
    m_opts.m_autoStart = m_AutoStart;
    m_opts.m_playFrom  = StmPos.fromString(m_PlayFrom);
    m_opts.m_playTo    = StmPos.fromString(m_PlayTo);

    //  Load and prepare the default video for playback
    //  with given stream options.
    try
    {
    if (player.getState() != Player.ST_INIT)
          player.unload();
        player.load (m_MediaFile, m_opts);
    }
    catch ( PlayerException e )
    {
      System.out.println("Could not load content: " + e);
    }
  }

  //
  // PlayerListener Routines
  //

  public void stateChange(int newState)
  {
    String st;

    switch (newState)
    {
    case Player.ST_UNINIT:    st = "uninitialized";                break;
    case Player.ST_INIT:      st = "initialized";                  break;
    case Player.ST_PREPARED:  st = "prepared";                     break;
    case Player.ST_REALIZED:  st = "realized";                     break;
    case Player.ST_PLAYING:   st = "playing";                      break;
    case Player.ST_PAUSED:    st = "paused";                       break;
    case Player.ST_EOS:       st = "end of stream";                break;
    case Player.ST_ERROR:     st = "error";                        break;
    default:                  st = "unknown (" + newState + ")" ;  break;
    }

    System.out.println("state change: " + m_oldState + " -> " + st);
    m_oldState = st;
  }

  public void error(int code, String msg)
  {
    System.out.println("OVC-" + code + ": " + msg);
  }

  public void endOfStream()
  {
    System.out.println("end of stream reached");
  }

  //
  // WindowAdapter routines
  //

  public void windowClosing(WindowEvent event)
  {
    System.out.println("Shutting down the java client ...");

    if (CtntList.player != null)
    {
      try
      {
        System.out.println("Player state before exiting: " +
               CtntList.player.getState());
        CtntList.player.term ();
      }
      catch (PlayerException e)
      {
        System.out.println("Error while terminating player: " + e);
      }
    }
    System.exit(0);
  }
}