android DLNA之dmp开发详细介绍

 DLNA详细情况可详见百度

DMP数字媒体播放器，能从DMS/M-DMS上查找并获取媒体内容并播放和渲染显示

废话不多说。。关于dmp代码wireme已经很详细了，今天记录一下这几天的理解。

public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {Log.v(TAG, "CreateView");mMainView = inflater.inflate(R.layout.fragment_device, container, false);getActivity().bindService(new Intent(context, WireUpnpService.class),serviceConnection, Context.BIND_AUTO_CREATE);init();return mMainView;}

多余的代码不用管，可以看到在oncreate的时候我们绑定了一个服务， WireUpnpService.class这里面没有东西，主要注意一下serviceConnection，让我们看下serviceConnection的代码.

private ServiceConnection serviceConnection = new ServiceConnection() {public void onServiceConnected(ComponentName className, IBinder service) {// 初始化upnpService = (AndroidUpnpService) service;// 绑定数据之前先解除绑定，移除本地设备信息，移除远程设备信息upnpService.getRegistry().removeAllLocalDevices();upnpService.getRegistry().removeAllRemoteDevices();if (mediaServer == null) {// try {// mediaServer = new MediaServer(getLocalIpAddress());// } catch (Exception e) {// Log.v(TAG, e.getMessage());// e.printStackTrace();// }mediaServer = WireUpnpService.mediaServer;}// 添加本地手机信息prepareMediaServer();deviceItems.clear();// 注册服务添加设备upnpService.getRegistry().addDevice(mediaServer.getDevice());// 添加本机设备信息至DeviceItemfor (Device device : upnpService.getRegistry().getDevices()) {deviceListRegistryListener.deviceAdded(new DeviceItem(device));}// 添加监听upnpService.getRegistry().addListener(deviceListRegistryListener);// 搜索周边设备upnpService.getControlPoint().search();}public void onServiceDisconnected(ComponentName className) {upnpService = null;}};

注释一下怕自己忘记。。可以注意到关键的服务MediaServer，和关键的监听器DeviceListRegistryListener，接下来让我们看看MediaServer的代码

public class MediaServer {private UDN udn = UDN.uniqueSystemIdentifier("GNaP-MediaServer");private LocalDevice localDevice;private final static String deviceType = "MediaServer";private final static int version = 1;private final static String LOGTAG = "GNaP-MediaServer";private final static int port = 8192;private static InetAddress localAddress;private static final UnsignedIntegerFourBytes sInstanceId = new UnsignedIntegerFourBytes(0);private AVTransportService avTransportService = null;private AVTransport avTransport = null;private Context context;public MediaServer(InetAddress localAddress) throws ValidationException {DeviceType type = new UDADeviceType(deviceType, version);// MODEL 手机型号 MANUFACTURER 手机厂商DeviceDetails details = new DeviceDetails(android.os.Build.MODEL,new ManufacturerDetails(android.os.Build.MANUFACTURER),new ModelDetails("GNaP", "GNaP MediaServer for Android", "v1"));// 读取LocalService元数据注释LocalService service = new AnnotationLocalServiceBinder().read(ContentDirectoryService.class);// 绑定服务service.setManager(new DefaultServiceManager<ContentDirectoryService>(service, ContentDirectoryService.class));// 本地设备localDevice = new LocalDevice(new DeviceIdentity(udn), type, details,service);this.localAddress = localAddress;this.context = context;Log.v(LOGTAG, "MediaServer device created: ");Log.v(LOGTAG, "friendly name: " + details.getFriendlyName());Log.v(LOGTAG, "manufacturer: "+ details.getManufacturerDetails().getManufacturer());Log.v(LOGTAG, "model: " + details.getModelDetails().getModelName());// start http servertry {new HttpServer(port);} catch (IOException ioe) {System.err.println("Couldn't start server:\n" + ioe);System.exit(-1);}Log.v(LOGTAG, "Started Http Server on port " + port);}public LocalDevice getDevice() {return localDevice;}public String getAddress() {Log.v(LOGTAG, "test:" + localAddress.getHostAddress() + ":" + port);return localAddress.getHostAddress() + ":" + port;}}

DeviceDetails details = new DeviceDetails(android.os.Build.MODEL,new ManufacturerDetails(android.os.Build.MANUFACTURER),new ModelDetails("GNaP", "GNaP MediaServer for Android", "v1"));

这句代码定义了本地设备的详细信息

LocalService service = new AnnotationLocalServiceBinder().read(ContentDirectoryService.class);// 绑定服务service.setManager(new DefaultServiceManager<ContentDirectoryService>(service, ContentDirectoryService.class));

这俩句话就是绑定了MediaServer服务

// 本地设备localDevice = new LocalDevice(new DeviceIdentity(udn), type, details,service);

这句话就等于把本地的信息绑定起来，也就让别的dlna设备可以搜索到

接下来我们看下关键的DeviceListRegistryListener代码:

class DeviceListRegistryListener extends DefaultRegistryListener {/* Discovery performance optimization for very slow Android devices! */@Overridepublic void remoteDeviceDiscoveryStarted(Registry registry,RemoteDevice device) {}@Overridepublic void remoteDeviceDiscoveryFailed(Registry registry,final RemoteDevice device, final Exception ex) {// deviceRemoved(device);}/* * End of optimization, you can remove the whole block if your Android * handset is fast (>= 600 Mhz) */@Overridepublic void remoteDeviceAdded(Registry registry, RemoteDevice device) {// 搜索附近符合的设备if (device.getType().getNamespace().equals("schemas-upnp-org")&& device.getType().getType().equals("MediaServer")) {final DeviceItem display = new DeviceItem(device, device.getDetails().getFriendlyName(),device.getDisplayString(), "(REMOTE) "+ device.getType().getDisplayString());deviceAdded(display);}}@Overridepublic void remoteDeviceRemoved(Registry registry, RemoteDevice device) {final DeviceItem display = new DeviceItem(device,device.getDisplayString());deviceRemoved(display);}@Overridepublic void localDeviceAdded(Registry registry, LocalDevice device) {final DeviceItem display = new DeviceItem(device, device.getDetails().getFriendlyName(), device.getDisplayString(),"(REMOTE) " + device.getType().getDisplayString());Log.v("DeviceDisplay", display + "");//添加本地设备deviceAdded(display);}@Overridepublic void localDeviceRemoved(Registry registry, LocalDevice device) {final DeviceItem display = new DeviceItem(device,device.getDisplayString());//移除设备deviceRemoved(display);}public void deviceAdded(final DeviceItem di) {if (getActivity() != null) {getActivity().runOnUiThread(new Runnable() {public void run() {// System.out.println(di);int position = deviceListAdapter.getPosition(di);if (position >= 0) {// Device already in the list, re-set new value// at// same// positiondeviceItems.remove(di);deviceItems.add(position, di);} else {deviceItems.add(di);}deviceListAdapter.notifyDataSetChanged();handler.sendEmptyMessage(0);// Sort it?// listAdapter.sort(DISPLAY_COMPARATOR);// listAdapter.notifyDataSetChanged();}});}}public void deviceRemoved(final DeviceItem di) {getActivity().runOnUiThread(new Runnable() {public void run() {deviceItems.remove(di);deviceListAdapter.notifyDataSetChanged();}});}}

。。。目前的理解就是这样了,dmr,dmc就看情况写

记录一下