sound_player.he

维信SDK文档。源码要求为至少5个C或Java源码

class
{
  //Thanks and Copyrights goes to LoopMasters
  const String URL = "http://www.loopmasters.com/WAV-Downloads.asp";
  
  const int    CMD_BACK        = 1;
  const int    CMD_PLAY        = 2;
  const int    CMD_STOP        = 3;
  const int    CMD_VOLUME_MENU = 4;
  const int    CMD_VOL         = 100;
  
  MenuItem     BACK    = new MenuItem(CMD_BACK, "Back");
  MenuItem     PLAY    = new MenuItem(CMD_PLAY, "Play");
  MenuItem     STOP    = new MenuItem(CMD_STOP, "Stop");
  MenuItem     VOLUME  = new MenuItem(CMD_VOLUME_MENU, "Volume");

  Menu MENU = new Menu()
    .add(CMD_VOL+100, "100%")
    .add(CMD_VOL+80, "80%")
    .add(CMD_VOL+60, "60%")
    .add(CMD_VOL+40, "40%")
    .add(CMD_VOL+20, "20%")
    .add(CMD_VOL+10, "10%")
    .add(CMD_VOL+5, "5%");

  Flow flow = null;
  Shell shell = null;
  Player player = null;
  
  int thumbX = 50;
  int thumbY = 50;
  int volume = 100;

  
  // --- Widget callbacks ---


  void startWidget()
  {
    thumbX, thumbY = getScreenSize();
    thumbX = thumbX / 2;
    thumbY = thumbY / 2;
    
    setMinimizedView(createMinimizedView("viewMini", getStyle("default")));
  }


  Shell openWidget()
  {
    flow = createFlow();
    
    loadCdList();
    
    shell = new Shell(flow);
    
    return shell;
  }
  
  
  void closeWidget()
  {
    stopPlayer();
  }
  
  
  MenuItem getSoftKey(Shell shell, Component focused, int key)
  {
    if (key == SOFTKEY_BACK) {
      return BACK;
    
    } else if (key == SOFTKEY_MIDDLE) {
      return (player != null)? STOP : PLAY;
    
    } else if (key == SOFTKEY_OK) {
      return VOLUME;
    }
    return null;
  }


  void actionPerformed(Shell shell, Component source, int action)
  {
    if (action == CMD_BACK) {
      popShell(shell);
    
    } else if (action == CMD_STOP) {
      stopPlayer();
    
    } else if (action == CMD_PLAY) {
      stopPlayer();
      loadSound(String(source.getData()));
    
    } else if (action == CMD_VOLUME_MENU) {
      MENU.open(shell);
    
    } else if (action > CMD_VOL) {
      //volume % is the action id minus CMD_VOL
      volume = action-CMD_VOL;
      setBubble(null, "Volume "+volume+"%");
    }
  }
  
  
  // --- UI functions ---

  void showCds(final Value cds)
  {
    flow.clear();
    int i = 0;
    foreach (Value cd : cds) {
      flow.add(createCdTable(cd));
      if (++i > 5) break; //lets show only few
    }
  }
  
  
  Flow createCdTable(final Value value)
  {
    Flow flow = createFlow();
    flow.add(createHeader(cleanCdName(String(value.name))));
    
    String pictUrl = normalizeUrl(URL, String(value.image).trim());
    Picture pict = getPicture(pictUrl, thumbX, thumbY, "jpeg");
    pict.setStyle(getStyle("image"));
    pict.setPreferredWidth(-100);
    pict.setFlags(VISIBLE|LINEFEED);
    flow.add(pict);
    
    foreach (Value sound : value.sounds) {
      String path = String(sound);
      String url = normalizeUrl(URL, encodeURL(path.trim()));
      url = url.replace(' ', '+');
      String file = getFilename(path);
      if (file.length() > 0) {
        flow.add(createLink(url, file));
      }
    }
    
    return flow;
  }
  
  
  Flow createFlow()
  {
    Flow flow = new Flow(getStyle("flow"));
    flow.setPreferredWidth(-100);
    flow.setFlags(VISIBLE|LINEFEED);
    return flow;
  }


  Label createHeader(final String text)
  {
    Label label = new Label(getStyle("header"), text);
    label.setPreferredWidth(-100);
    label.setFlags(VISIBLE|LINEFEED);
    return label;
  }

  
  Label createLink(final String url, final String name)
  {
    Label label = new Label(getStyle("link"), name);
    label.setPreferredWidth(-100);
    label.setFlags(VISIBLE|WRAP|FOCUSABLE);
    label.setAction(CMD_PLAY);
    label.setData(url);
    return label;
  }


  // --- Loading and playing sounds ---
  
  
  void loadCdList()
  {
    if (getStore().has("list")) {
      printf("using cached list");
      showCds(getStore().getValue("list"));
      return;
    }

    call(null, "sounds" , "get", ["url" => URL], ok, nok);
    Prompt prompt = new Prompt(null, "Loading sounds...", null, null);
    prompt.push();

    void ok(Object state, Value ret)
    {
      if (prompt != null) {
        prompt.pop();
        prompt = null;
      }

      if (ret.size() > 0) {
        getStore().put("list", ret);
        showCds(ret);
        
      } else {
        setBubble(null, "No Cds found ;(");
      }
    }
    
    void nok(Object state, String error)
    {
      printf("There was a problem: "+error);
      if (prompt != null) {
        prompt.pop();
        prompt = null;
      }
    }
  }


  void loadSound(final String url)
  {
    if (getStore().has(url)) {
      printf("using cached: "+url);
      play(ByteArray(getStore().getValue(url)));
      return;
    }
    printf("loading: "+url);

    call(null, "http" , "get", ["url" => url], ok, nok);
    Prompt prompt = new Prompt(null, "Loading sound...", null, null);
    prompt.push();

    void ok(Object state, Value ret)
    {
      if (prompt != null) {
        prompt.pop();
        prompt = null;
      }
      
      getStore().put(url, ret);
      play(ByteArray(ret));
    }
    
    void nok(Object state, String error)
    {
      setBubble(null, "Loading failed");
      if (prompt != null) {
        prompt.pop();
        prompt = null;
      }
    }

    void play(ByteArray soundData)
    {
      player = getPlayer(ByteArray(soundData), "audio/mpeg", volume);
      player.start();
      shell.updateMenu();
    }
  }


  void stopPlayer()
  {
    if (player != null) {
      player.stop();
      player.close();
      player = null;
    }
    shell.updateMenu();
  }


  // --- Helper functions ---

  
  String normalizeUrl(final String base, final String url)
  {
    if (url.startsWith("http")) {
      return url;
    }
    
    final int i = base.lastIndexOf('/', base.length());
    if (i == -1) return null;
    final String baseDir = base.substring(0, i+1);
    
    if (url.startsWith("/")) {
      return baseDir + url.substring(1, url.length());
    
    } else {
      return baseDir + url;
    }
  }


  String getFilename(String file)
  {
    final int i = file.lastIndexOf('/', file.length());
    if (i == -1) return file;
    
    file = file.substring(i+1, file.length());
    
    if (file.toLowerCase().endsWith(".mp3")) {
      return file.substring(0, file.length()-4);
    }
    return file;
  }
  

  String cleanCdName(final String name)
  {
    int i = name.indexOf("-", 0);
    if (i < 0) {
      i = name.indexOf("Free", 0);
    }
    if (i < 0) {
      i = name.indexOf("Preview", 0);
    }
    
    if (i > 0) {
      return name.substring(0, i).trim();
    }
    return name;
  }

  
} //class