200行Java代码实现Android下的视频通话

最近学习Android平台下跨平台音视频通信开发，虽然网上有很多开源项目供我们参考学习，但音视频效果很一般，还有很多不稳定的因素，毕竟是开源嘛。在国内我找到了一个比较好音视频通信解决方案（点击下载官方demo），该案例提供了纯Java语言接口供我们调用，随后我参照官方android demo程序和开发文档并结合自己的见解写了一个android音频通信软件，200行以内代码就搞定了（难以相信吧）。其实我只是调用其相关API即可实现。以下是我自己写的Java代码，以备大家互相学习：

/** 
 * Android视频聊天  
 * 1、初始化SDK 2、连接服务器、 3、用户登录；4、进入房间；5、打开本地视频；6、请求对方视频 
 */ 
public class VideoChatActivity extends Activity implements AnyChatBaseEvent 
{ 
    private AnyChatCoreSDK anychat;         // 核心SDK 
    private SurfaceView remoteSurfaceView;  // 对方视频 
    private SurfaceView localSurfaceView;   // 本地视频 
    private ConfigEntity configEntity; 
    private boolean bSelfVideoOpened = false;   // 本地视频是否已打开 
    private boolean bOtherVideoOpened = false;  // 对方视频是否已打开 
    private TimerTask mTimerTask;               // 定时器 
    private Timer mTimer = new Timer(true); 
    private Handler handler;                    // 用Handler来不间断刷新即时视频 
    private List<String> userlist = new ArrayList<String>();//保存在线用户列表 
    private int userid;                         // 用户ID 
    @Override 
    public void onCreate(Bundle savedInstanceState) 
    { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_video_chat); 
        remoteSurfaceView = (SurfaceView) findViewById(R.id.surface_remote); 
        localSurfaceView = (SurfaceView) findViewById(R.id.surface_local); 
        configEntity = ConfigService.LoadConfig(this);//加载视频通话设置 
        loginSystem();// 初始化SDK 连接服务器 
        mTimerTask = new TimerTask(){ 
            public void run(){ 
                Message mesasge = new Message(); 
                handler.sendMessage(mesasge); 
            } 
        }; 
        mTimer.schedule(mTimerTask, 1000, 100); 
        handler = new Handler(){ 
            @Override 
            public void handleMessage(Message msg){ 
                VideoChat();// 不间断显示即时视频通话画面 
                super.handleMessage(msg); 
            } 
        }; 
    } 
    // 初始化SDK 连接服务器 
    private void loginSystem(){ 
        if (anychat == null){ 
            anychat = new AnyChatCoreSDK(); 
            anychat.SetBaseEvent(this);         // 设置基本事件回调函数 
            if (configEntity.useARMv6Lib != 0)  // 使用ARMv6指令集 
                anychat.SetSDKOptionInt(AnyChatDefine. 
                        BRAC_SO_CORESDK_USEARMV6LIB, 1); 
            anychat.InitSDK(android.os.Build.VERSION.SDK_INT, 0); // 初始化SDK 
        } 
        anychat.Connect("demo.anychat.cn", 8906);// 连接服务器 
    } 
    // 显示即时视频通话画面 
    public void VideoChat(){ 
        if (!bOtherVideoOpened){ 
            if (anychat.GetCameraState(userid) == 2 
                    && anychat.GetUserVideoWidth(userid) != 0){ 
                SurfaceHolder holder = remoteSurfaceView.getHolder(); 
                holder.setFormat(PixelFormat.RGB_565); 
                holder.setFixedSize(anychat.GetUserVideoWidth(userid), 
                        anychat.GetUserVideoHeight(userid)); 
                Surface s = holder.getSurface();            // 获得视频画面 
                anychat.SetVideoPos(userid, s, 0, 0, 0, 0); // 调用API显示视频画面 
                bOtherVideoOpened = true; 
            } 
        } 
        if (!bSelfVideoOpened){ 
            if (anychat.GetCameraState(-1) == 2 
                    && anychat.GetUserVideoWidth(-1) != 0){ 
                SurfaceHolder holder = localSurfaceView.getHolder(); 
                holder.setFormat(PixelFormat.RGB_565); 
                holder.setFixedSize(anychat.GetUserVideoWidth(-1), 
                        anychat.GetUserVideoHeight(-1)); 
                Surface s = holder.getSurface(); 
                anychat.SetVideoPos(-1, s, 0, 0, 0, 0); 
                bSelfVideoOpened = true; 
            } 
        } 
    } 
    public void OnAnyChatConnectMessage(boolean bSuccess){ 
        if (!bSuccess){ 
            Toast.makeText(VideoChatActivity.this, "连接服务器失败，自动重连，请稍后...", Toast.LENGTH_SHORT).show(); 
        } 
        anychat.Login("android", "");               // 服务器连接成功 用户登录 
    } 
    public void OnAnyChatLoginMessage(int dwUserId, int dwErrorCode){ 
        if (dwErrorCode == 0) { 
            Toast.makeText(this, "登录成功！", Toast.LENGTH_SHORT).show(); 
            anychat.EnterRoom(1, "");               // 用户登录成功 进入房间 
            ApplyVideoConfig(); 
        } else { 
            Toast.makeText(this, "登录失败，错误代码：" + dwErrorCode, Toast.LENGTH_SHORT).show(); 
        } 
    } 
    public void OnAnyChatEnterRoomMessage(int dwRoomId, int dwErrorCode){ 
        if (dwErrorCode == 0) {                     // 进入房间成功  打开本地音视频 
            Toast.makeText(this, "进入房间成功", Toast.LENGTH_SHORT).show(); 
            anychat.UserCameraControl(-1, 1);       // 打开本地视频 
            anychat.UserSpeakControl(-1, 1);        // 打开本地音频 
        } else { 
            Toast.makeText(this, "进入房间失败，错误代码：" + dwErrorCode, Toast.LENGTH_SHORT).show(); 
        } 
    } 
    public void OnAnyChatOnlineUserMessage(int dwUserNum, int dwRoomId){ 
        if (dwRoomId == 1){ 
            int user[] = anychat.GetOnlineUser(); 
            if (user.length != 0){ 
                for (int i = 0; i < user.length; i++){ 
                    userlist.add(user[i]+""); 
                } 
                String temp =userlist.get(0); 
                userid = Integer.parseInt(temp); 
                anychat.UserCameraControl(userid, 1);// 请求用户视频 
                anychat.UserSpeakControl(userid, 1); // 请求用户音频 
            } 
            else { 
                Toast.makeText(VideoChatActivity.this, "当前没有在线用户", Toast.LENGTH_SHORT).show(); 
            } 
        } 
    } 
    public void OnAnyChatUserAtRoomMessage(int dwUserId, boolean bEnter){ 
        if (bEnter) {//新用户进入房间 
            userlist.add(dwUserId+""); 
        } 
        else {       //用户离开房间 
            if (dwUserId == userid) 
            { 
                Toast.makeText(VideoChatActivity.this, "视频用户已下线", Toast.LENGTH_SHORT).show(); 
                anychat.UserCameraControl(userid, 0);// 关闭用户视频 
                anychat.UserSpeakControl(userid, 0); // 关闭用户音频 
                userlist.remove(userid+"");          //移除该用户 
                if (userlist.size() != 0) 
                { 
                    String temp =userlist.get(0); 
                    userid = Integer.parseInt(temp); 
                    anychat.UserCameraControl(userid, 1);// 请求其他用户视频 
                    anychat.UserSpeakControl(userid, 1); // 请求其他用户音频 
                } 
            } 
            else { 
                userlist.remove(dwUserId+"");    //移除该用户 
            } 
        } 
    } 
    public void OnAnyChatLinkCloseMessage(int dwErrorCode){ 
        Toast.makeText(VideoChatActivity.this, "连接关闭，error：" + dwErrorCode, Toast.LENGTH_SHORT).show(); 
    } 
    @Override 
    protected void onDestroy(){ //程序退出  
        anychat.LeaveRoom(-1);  //离开房间  
        anychat.Logout();       //注销登录  
        anychat.Release();      //释放资源 
        mTimer.cancel(); 
        super.onDestroy(); 
    } 
    // 根据配置文件配置视频参数 
    private void ApplyVideoConfig(){ 
        if (configEntity.configMode == 1) // 自定义视频参数配置 
        { 
            // 设置本地视频编码的码率（如果码率为0，则表示使用质量优先模式） 
            anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_BITRATECTRL,configEntity.videoBitrate); 
            if (configEntity.videoBitrate == 0) 
            { 
                // 设置本地视频编码的质量 
                anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_QUALITYCTRL,configEntity.videoQuality); 
            } 
            // 设置本地视频编码的帧率 
            anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_FPSCTRL,configEntity.videoFps); 
            // 设置本地视频编码的关键帧间隔 
            anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_GOPCTRL,configEntity.videoFps * 4); 
            // 设置本地视频采集分辨率 
            anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_WIDTHCTRL,configEntity.resolution_width); 
            anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_HEIGHTCTRL,configEntity.resolution_height); 
            // 设置视频编码预设参数（值越大，编码质量越高，占用CPU资源也会越高） 
            anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_PRESETCTRL,configEntity.videoPreset); 
        } 
        // 让视频参数生效 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_APPLYPARAM,configEntity.configMode); 
        // P2P设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_NETWORK_P2PPOLITIC,configEntity.enableP2P); 
        // 本地视频Overlay模式设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_OVERLAY,configEntity.videoOverlay); 
        // 回音消除设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_AUDIO_ECHOCTRL,configEntity.enableAEC); 
        // 平台硬件编码设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_CORESDK_USEHWCODEC,configEntity.useHWCodec); 
        // 视频旋转模式设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_ROTATECTRL,configEntity.videorotatemode); 
        // 视频平滑播放模式设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_STREAM_SMOOTHPLAYMODE,configEntity.smoothPlayMode); 
        // 视频采集驱动设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_CAPDRIVER,configEntity.videoCapDriver); 
        // 本地视频采集偏色修正设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_FIXCOLORDEVIA,configEntity.fixcolordeviation); 
        // 视频显示驱动设置 
        anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_VIDEOSHOW_DRIVERCTRL,configEntity.videoShowDriver); 
    } 
}