commandresources.java

手机流媒体的实现

// Copyright (c) 2005 Sony Ericsson Mobile Communications AB
//
// This software is provided "AS IS," without a warranty of any kind. 
// ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, 
// INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A 
// PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. 
//
// THIS SOFTWARE IS COMPLEMENTARY OF JAYWAY AB (www.jayway.se)

/*///////////////////////////////////////////////////////////////////////////////
//文档生成日期：2005.11.8
//
//(1)概述：
//类名称：CommandResources
//类说明：
//	提供各种资源的统一入口，比如图片、字符串。
  
//所在子系统：GetDynamicIP
//
//系统总描述:
	    本工程。


	 子系统描述：
		.

//(2)历史记录:
//创建人: 郑昀(2005.11.8)
//联系我: Google Talk >> [e-mail]
//Blogs:    http://blog.csdn.net/zhengyun_ustc/以及http://www.cnblogs.com/zhengyun_ustc

//(3)版权声明:
//我这个版本的GetDynamicIP，
//j2me客户端代码仅仅允许您借鉴，但不得用于商业用途，除非得到郑昀本人的授权。本人保留所有权利。

////////////////////////////////////////////////////////////////////*/
package com.ultrapower.common;

import java.io.InputStream;
import java.util.Hashtable;

import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.lcdui.Image;

/**
 * Primitive resource mapper.
 * 
 * @author Peter Andersson & zhengyun
 */
public class CommandResources
{	
  // Image keys
  private static final int OFFSET_IMG          = 100;
  public static final int IMG_LOGO	  	      = 100;
  public static final int IMG_COMMAND	  	      = 101;
  

  // Resource (sound) keys
  private static final int OFFSET_SND	= 200;
  public static final int SND_MAIN_MIN			= 200;
  public static final int SND_SECONDARY_MIN		= 201;
  public static final int SND_MAIN_MAX			= 209;
  public static final int SND_SECONDARY_MAX		= 210;
  
  /** Image cache */
  protected static Hashtable m_images = new Hashtable();
  
  // Image resource names
  protected static final String[] IMGNAME_MAP ={
	  "logo.png",
	  "command.png",
  };
  
  
  // Resource (audio) names
  protected static final String[] RESOURCE_MAP = {
    "http://218.249.90.118/toodou/changjin.1..amr",
	"http://218.249.90.118/toodou/changjin.2..amr",
	"http://218.249.90.118/toodou/changjin.3..amr",
	"http://218.249.90.118/toodou/changjin.4..amr",
	"http://218.249.90.118/toodou/changjin.5..amr",
	"http://218.249.90.118/toodou/changjin.6..amr",
    "http://218.249.90.118/toodou/changjin.7..amr",
	"http://218.249.90.118/toodou/changjin.8..amr",
	"http://218.249.90.118/toodou/changjin.9..amr",
	"http://218.249.90.118/toodou/changjin.10..amr",
	"http://218.249.90.118/toodou/changjin.11..amr",
  };
  
	/*
	 * 这是中国移动的WAP网关代理地址
	 */
	private final static String CMCC_GATEWAY = "http://10.0.0.172";
	
	// 是否走CMWAP代理
	private static boolean m_bCMWAPProxy = true;
	
  /**
   * Returns specified resource as stream
   * @param resourceId  The id of the resource.
   * @return            An inputstream to the resource.
   */
  public static InputStream getMusicResource(int resourceId) throws Exception
  {
	  System.out.println("getMusicResource resourceId>>" + resourceId);
      resourceId = resourceId - OFFSET_SND;
	  String sResource = CommandResources.RESOURCE_MAP[resourceId];
	  
		/////////////////////////////////////////////
		/*
		 * 下面的代码经我修改是为了走cmwap代理连接互联网
		 * 
		 * 举个例子：
		 *  走cmwap代理:sRequestURL=http://10.0.0.172/toodou/changjin.11..amr
		 	走cmwap代理:X-Online-Host=http://218.249.90.118:80
		 */
		// zhengyun added 20060328
		int nPosIndex = -1;
		String sServerIp = "";
		String sSuffix = "";			   
		String sRequestURL = "";
		
		if(m_bCMWAPProxy == true)
		{
		    if(sResource.startsWith("http://"))
			{
				nPosIndex = sResource.substring(7, sResource.length()).indexOf('/') + 7;
				sServerIp = sResource.substring(7, nPosIndex); // -> www.j2medev.com
			}
			else
			{
				nPosIndex = sResource.indexOf('/');
				sServerIp = sResource.substring(0, nPosIndex); // -> www.j2medev.com
			}
		}
		else{
			sRequestURL = sResource;
			System.out.println("走cmnet!");
	    }
	    
	    sSuffix = sResource.substring(nPosIndex); // -> /bbs/post.asp...
		
		sRequestURL = CMCC_GATEWAY + sSuffix;
		System.out.println("走cmwap代理:sRequestURL=" + sRequestURL);
		
	    HttpConnection conn = 
			(HttpConnection)Connector.open(sRequestURL);
		conn.setRequestMethod(HttpConnection.GET);
		
		// 注意X-Online-Host
		if (m_bCMWAPProxy == true) 
		{
			conn.setRequestProperty("X-Online-Host", sServerIp);
			System.out.println("走cmwap代理:X-Online-Host=" + sServerIp);
        }
		
		System.out.println("getMusicResource>>远程资源链接:" +
				sResource);

      return (InputStream)conn.openInputStream();
  }
  
  /**
   * Returns specified image.
   * @param id  The id of the image.
   * @return    An image.
   */
  public static synchronized Image getImage(int id)
  {
    id -= OFFSET_IMG;
    Image img = (Image)m_images.get(new Integer(id));
    if (img == null)
    {
      try
      {
        img = Image.createImage("/res/icons/" + IMGNAME_MAP[id]);
		System.out.println("get image:/res/icons/" + IMGNAME_MAP[id]);
        m_images.put(new Integer(id), img);
      }
      catch (Exception e)
      {
        System.out.println("Error getting resource img " + IMGNAME_MAP[id]
           + ">>" + e.getMessage());
        e.printStackTrace();
      }
    }
    return img;
  }
}