linphone-LinphoneService.java文件分析

说明

主要是处理接听电话的逻辑，监听linphone拨打电话的状态逻辑。

官方注释

/**
 * 
 * Linphone service, reacting to Incoming calls, ...<br />
 * 
 * Roles include:<ul>
 * <li>Initializing LinphoneManager</li>
 * <li>Starting C libLinphone through LinphoneManager</li>
 * <li>Reacting to LinphoneManager state changes</li>
 * <li>Delegating GUI state change actions to GUI listener</li>
 * 
 * 
 * @author Guillaume Beraudo
 *
 */

翻译：
1. 这个类专门用于处理接听电话的。
2. 初始化LinphoneManager
3. 加载C库
4. 反应LinphoneManager的转台变化
5. 授权GUI的状态变化

功能

• 显示不同的通知栏，以及在不同状态下显示不同的图片状态等。
• 判断LinphoneService是否准备好， 主要是判断LinphoneService是否实例化， 第二个参数mTestDelayElapsed主要是用于测试的，它的参数是true， 故不测试。

public static boolean isReady() {
        return instance != null && instance.mTestDelayElapsed;
    }

• 几个显示当前状态的通知栏。其中很有意思的是，这里用到了反射：目的是将这个Service放在最前边， 注释写了， 是为了确保audio通话的质量。

// Retrieve methods to publish notification and keep Android
// from killing us and keep the audio quality high.                                    
if (Version.sdkStrictlyBelow(Version.API05_ECLAIR_20)) {
    try {
        mSetForeground = getClass().getMethod("setForeground", mSetFgSign);
    } catch (NoSuchMethodException e) {
        Log.e(e, "Couldn't find foreground method");
    }
} else {
     try {
         mStartForeground = getClass().getMethod("startForeground", mStartFgSign);
         mStopForeground = getClass().getMethod("stopForeground", mStopFgSign);
     } catch (NoSuchMethodException e) {
        Log.e(e, "Couldn't find startForeground or stopForeground");
    }
}

• 其中还有一个非常有意思的是：保活代码

//make sure the application will at least wakes up every 10mn                                                       Intent intent = new Intent(this, KeepAliveHandler.class);
mkeepAlivePendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);

((AlarmManager)this.getSystemService(Context.ALARM_SERVICE)).setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,SystemClock.elapsedRealtime()+600000, 600000 , mkeepAlivePendingIntent);

其中

/**
* @param type One of {@link #ELAPSED_REALTIME}, {@link #ELAPSED_REALTIME_WAKEUP}, {@link #RTC} or {@link #RTC_WAKEUP)}
* @param triggerAtMillis time in milliseconds that the alarm should first go off, using the appropriate clock (depending on the alarm type).
* @param intervalMillis interval in milliseconds between subsequent repeats of the alarm.
* opeation Action to perform when the alarm goes off;typecally comes from {@link PendingIntent#getBroadcast IntentSender.getBroadcast()}
*/
public void setRepeating(int type, long triggerAtMillis,
            long intervalMillis, PendingIntent operation) {
setImpl(type, triggerAtMillis, legacyExactLength(),             
            intervalMillis, operation, null);
    }

• 以及当有电话进入时跳转到相应处理的Activity

protected void onIncomingReceived() {
//wakeup linphone                
startActivity(new Intent() .setClass(this, incomingReceivedActivity)          .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
}

LinphoneService.java

public final class LinphoneService extends Service {
    /* Listener needs to be implemented in the Service as it calls
     * setLatestEventInfo and startActivity() which needs a context.
     */
    public static final String START_LINPHONE_LOGS = " ==== Phone information dump ====";
    public static final int IC_LEVEL_ORANGE=0;
    /*private static final int IC_LEVEL_GREEN=1;
      private static final int IC_LEVEL_RED=2;*/
    //public static final int IC_LEVEL_OFFLINE=3;

    private static LinphoneService instance;

    private final static int NOTIF_ID=1;
    private final static int INCALL_NOTIF_ID=2;
    private final static int MESSAGE_NOTIF_ID=3;
    private final static int CUSTOM_NOTIF_ID=4;

    public static boolean isReady() {
    return instance != null && instance.mTestDelayElapsed;
    }

    /**
     * @throws RuntimeException service not instantiated
     */
    public static LinphoneService instance()  {
    if (isReady()) return instance;

    throw new RuntimeException("LinphoneService not instantiated yet");
    }

    public Handler mHandler = new Handler();

    //  private boolean mTestDelayElapsed; // add a timer for testing
    private boolean mTestDelayElapsed = true; // no timer
    private NotificationManager mNM;

    private Notification mNotif;
    private Notification mIncallNotif;
    private Notification mMsgNotif;
    private Notification mCustomNotif;
    private int mMsgNotifCount;
    private PendingIntent mNotifContentIntent;
    private PendingIntent mkeepAlivePendingIntent;
    private String mNotificationTitle;
    private boolean mDisableRegistrationStatus;
    private LinphoneCoreListenerBase mListener;
    public static int notifcationsPriority = (Version.sdkAboveOrEqual(Version.API16_JELLY_BEAN_41) ? Notification.PRIORITY_MIN : 0);

    public int getMessageNotifCount() {
    return mMsgNotifCount;
    }

    public void resetMessageNotifCount() {
    mMsgNotifCount = 0;
    }

    @Override
    public void onCreate() {
    super.onCreate();

    // In case restart after a crash. Main in LinphoneActivity
    mNotificationTitle = getString(R.string.service_name);

    // Needed in order for the two next calls to succeed, libraries must have been loaded first
    LinphoneCoreFactory.instance().setLogCollectionPath(getFilesDir().getAbsolutePath());
    LinphoneCoreFactory.instance().enableLogCollection(!(getResources().getBoolean(R.bool.disable_every_log)));

    // Dump some debugging information to the logs
    Log.i(START_LINPHONE_LOGS);
    dumpDeviceInformation();
    dumpInstalledLinphoneInformation();

    mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    mNM.cancel(INCALL_NOTIF_ID); // in case of crash the icon is not removed

    Intent notifIntent = new Intent(this, incomingReceivedActivity);
    notifIntent.putExtra("Notification", true);
    mNotifContentIntent = PendingIntent.getActivity(this, 0, notifIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    Bitmap bm = null;
    try {
        bm = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
    } catch (Exception e) {
    }
    mNotif = Compatibility.createNotification(this, mNotificationTitle, "", R.drawable.linphone_notification_icon, R.mipmap.ic_launcher, bm, mNotifContentIntent, true,notifcationsPriority);

    LinphoneManager.createAndStart(LinphoneService.this);

    instance = this; // instance is ready once linphone manager has been created
    LinphoneManager.getLc().addListener(mListener = new LinphoneCoreListenerBase(){

        @Override
        public void callState(LinphoneCore lc, LinphoneCall call, LinphoneCall.State state, String message) {
            if (instance == null) {
            Log.i("Service not ready, discarding call state change to ",state.toString());
            return;
            }

            if (state == LinphoneCall.State.IncomingReceived) {
            onIncomingReceived();
            }

            if (state == State.CallUpdatedByRemote) {
            // If the correspondent proposes video while audio call
            boolean remoteVideo = call.getRemoteParams().getVideoEnabled();
            boolean localVideo = call.getCurrentParamsCopy().getVideoEnabled();
            boolean autoAcceptCameraPolicy = LinphonePreferences.instance().shouldAutomaticallyAcceptVideoRequests();
            if (remoteVideo && !localVideo && !autoAcceptCameraPolicy && !LinphoneManager.getLc().isInConference()) {
                try {
                LinphoneManager.getLc().deferCallUpdate(call);
                } catch (LinphoneCoreException e) {
                e.printStackTrace();
                }
            }
            }

            if (state == State.StreamsRunning) {
            // Workaround bug current call seems to be updated after state changed to streams running
            if (getResources().getBoolean(R.bool.enable_call_notification))
                refreshIncallIcon(call);
            } else {
            if (getResources().getBoolean(R.bool.enable_call_notification))
                refreshIncallIcon(LinphoneManager.getLc().getCurrentCall());
            }
        }

        @Override
        public void globalState(LinphoneCore lc,LinphoneCore.GlobalState state, String message) {
            if (state == GlobalState.GlobalOn) {
            sendNotification(IC_LEVEL_ORANGE, R.string.notification_started);
            }
        }

        @Override
        public void registrationState(LinphoneCore lc, LinphoneProxyConfig cfg, LinphoneCore.RegistrationState state, String smessage) {
            //              if (instance == null) {
            //                  Log.i("Service not ready, discarding registration state change to ",state.toString());
            //                  return;
            //              }
            if (!mDisableRegistrationStatus) {
            if (state == RegistrationState.RegistrationOk && LinphoneManager.getLc().getDefaultProxyConfig() != null && LinphoneManager.getLc().getDefaultProxyConfig().isRegistered()) {
                sendNotification(IC_LEVEL_ORANGE, R.string.notification_registered);
            }

            if ((state == RegistrationState.RegistrationFailed || state == RegistrationState.RegistrationCleared) && (LinphoneManager.getLc().getDefaultProxyConfig() == null || !LinphoneManager.getLc().getDefaultProxyConfig().isRegistered())) {
                sendNotification(IC_LEVEL_ORANGE, R.string.notification_register_failure);
            }

            if (state == RegistrationState.RegistrationNone) {
                sendNotification(IC_LEVEL_ORANGE, R.string.notification_started);
            }
            }
        }
        });

    // Retrieve methods to publish notification and keep Android
    // from killing us and keep the audio quality high.
    if (Version.sdkStrictlyBelow(Version.API05_ECLAIR_20)) {
        try {
        mSetForeground = getClass().getMethod("setForeground", mSetFgSign);
        } catch (NoSuchMethodException e) {
        Log.e(e, "Couldn't find foreground method");
        }
    } else {
        try {
        mStartForeground = getClass().getMethod("startForeground", mStartFgSign);
        mStopForeground = getClass().getMethod("stopForeground", mStopFgSign);
        } catch (NoSuchMethodException e) {
        Log.e(e, "Couldn't find startForeground or stopForeground");
        }
    }

    this.getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true, mObserver);

    startForegroundCompat(NOTIF_ID, mNotif);

    if (!mTestDelayElapsed) {
        // Only used when testing. Simulates a 5 seconds delay for launching service
        mHandler.postDelayed(new Runnable() {
            @Override public void run() {
            mTestDelayElapsed = true;
            }
        }, 5000);
    }

    //make sure the application will at least wakes up every 10 mn
    Intent intent = new Intent(this, KeepAliveHandler.class);
    mkeepAlivePendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
    ((AlarmManager) this.getSystemService(Context.ALARM_SERVICE)).setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP
                                           , SystemClock.elapsedRealtime()+600000
                                           , 600000
                                           , mkeepAlivePendingIntent);
    }

    private ContentObserver mObserver = new ContentObserver(new Handler()) {

        @Override
        public void onChange(boolean selfChange) {
        super.onChange(selfChange);
        }

    };


    private enum IncallIconState {INCALL, PAUSE, VIDEO, IDLE}
    private IncallIconState mCurrentIncallIconState = IncallIconState.IDLE;
    // 设置当前状态的icon显示
    private synchronized void setIncallIcon(IncallIconState state) {
    if (state == mCurrentIncallIconState) return;
    mCurrentIncallIconState = state;

    int notificationTextId = 0;
    int inconId = 0;

    switch (state) {
    case IDLE:
        mNM.cancel(INCALL_NOTIF_ID);
        return;
    case INCALL:
        inconId = R.drawable.topbar_call_notification;
        notificationTextId = R.string.incall_notif_active;
        break;
    case PAUSE:
        inconId = R.drawable.topbar_call_notification;
        notificationTextId = R.string.incall_notif_paused;
        break;
    case VIDEO:
        inconId = R.drawable.topbar_videocall_notification;
        notificationTextId = R.string.incall_notif_video;
        break;  
    default:
        throw new IllegalArgumentException("Unknown state " + state);
    }

    if (LinphoneManager.getLc().getCallsNb() == 0) {
        return;
    }

    LinphoneCall call = LinphoneManager.getLc().getCalls()[0];
    String userName = call.getRemoteAddress().getUserName();
    String domain = call.getRemoteAddress().getDomain();
    String displayName = call.getRemoteAddress().getDisplayName();
    LinphoneAddress address = LinphoneCoreFactory.instance().createLinphoneAddress(userName,domain,null);
    address.setDisplayName(displayName);

    Contact contact = ContactsManager.getInstance().findContactWithAddress(getContentResolver(), address);
    Uri pictureUri = contact != null ? contact.getPhotoUri() : null;
    Bitmap bm = null;
    try {
        bm = MediaStore.Images.Media.getBitmap(getContentResolver(), pictureUri);
    } catch (Exception e) {
        bm = BitmapFactory.decodeResource(getResources(), R.drawable.avatar);
    }
    String name = address.getDisplayName() == null ? address.getUserName() : address.getDisplayName();
    mIncallNotif = Compatibility.createInCallNotification(getApplicationContext(), mNotificationTitle, getString(notificationTextId), inconId, bm, name, mNotifContentIntent);

    notifyWrapper(INCALL_NOTIF_ID, mIncallNotif);
    }

    public void refreshIncallIcon(LinphoneCall currentCall) {
    LinphoneCore lc = LinphoneManager.getLc();
    if (currentCall != null) {
        if (currentCall.getCurrentParamsCopy().getVideoEnabled() && currentCall.cameraEnabled()) {
        // checking first current params is mandatory
        setIncallIcon(IncallIconState.VIDEO);
        } else {
        setIncallIcon(IncallIconState.INCALL);
        }
    } else if (lc.getCallsNb() == 0) {
        setIncallIcon(IncallIconState.IDLE);
    }  else if (lc.isInConference()) {
        setIncallIcon(IncallIconState.INCALL);
    } else {
        setIncallIcon(IncallIconState.PAUSE);
    }
    }

    @Deprecated 
    public void addNotification(Intent onClickIntent, int iconResourceID, String title, String message) {
    addCustomNotification(onClickIntent, iconResourceID, title, message, true);
    }

    public void addCustomNotification(Intent onClickIntent, int iconResourceID, String title, String message, boolean isOngoingEvent) {
    PendingIntent notifContentIntent = PendingIntent.getActivity(this, 0, onClickIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    Bitmap bm = null;
    try {
        bm = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
    } catch (Exception e) {
    }
    mCustomNotif = Compatibility.createNotification(this, title, message, iconResourceID, 0, bm, notifContentIntent, isOngoingEvent,notifcationsPriority);

    mCustomNotif.defaults |= Notification.DEFAULT_VIBRATE;
    mCustomNotif.defaults |= Notification.DEFAULT_SOUND;
    mCustomNotif.defaults |= Notification.DEFAULT_LIGHTS;

    notifyWrapper(CUSTOM_NOTIF_ID, mCustomNotif);
    }

    public void removeCustomNotification() {
    mNM.cancel(CUSTOM_NOTIF_ID);
    resetIntentLaunchedOnNotificationClick();
    }

    public void displayMessageNotification(String fromSipUri, String fromName, String message) {
    Intent notifIntent = new Intent(this, LinphoneActivity.class);
    notifIntent.putExtra("GoToChat", true);
    notifIntent.putExtra("ChatContactSipUri", fromSipUri);

    PendingIntent notifContentIntent = PendingIntent.getActivity(this, 0, notifIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    if (fromName == null) {
        fromName = fromSipUri;
    }

    if (mMsgNotif == null) {
        mMsgNotifCount = 1;
    } else {
        mMsgNotifCount++;
    }

    Uri pictureUri = null;
    try {
        Contact contact = ContactsManager.getInstance().findContactWithAddress(getContentResolver(), LinphoneCoreFactory.instance().createLinphoneAddress(fromSipUri));
        if (contact != null)
        pictureUri = contact.getThumbnailUri();
    } catch (LinphoneCoreException e1) {
        Log.e("Cannot parse from address ", e1);
    }

    Bitmap bm = null;
    if (pictureUri != null) {
        try {
        bm = MediaStore.Images.Media.getBitmap(getContentResolver(), pictureUri);
        } catch (Exception e) {
        bm = BitmapFactory.decodeResource(getResources(), R.drawable.topbar_avatar);
        }
    } else {
        bm = BitmapFactory.decodeResource(getResources(), R.drawable.topbar_avatar);
    }
    mMsgNotif = Compatibility.createMessageNotification(getApplicationContext(), mMsgNotifCount, fromName, message, bm, notifContentIntent);

    notifyWrapper(MESSAGE_NOTIF_ID, mMsgNotif);
    }

    public void removeMessageNotification() {
    mNM.cancel(MESSAGE_NOTIF_ID);
    resetIntentLaunchedOnNotificationClick();
    }

    private static final Class<?>[] mSetFgSign = new Class[] {boolean.class};
    private static final Class<?>[] mStartFgSign = new Class[] {
    int.class, Notification.class};
    private static final Class<?>[] mStopFgSign = new Class[] {boolean.class};

    private Method mSetForeground;
    private Method mStartForeground;
    private Method mStopForeground;
    private Object[] mSetForegroundArgs = new Object[1];
    private Object[] mStartForegroundArgs = new Object[2];
    private Object[] mStopForegroundArgs = new Object[1];
    private Class<? extends Activity> incomingReceivedActivity = LinphoneActivity.class;

    void invokeMethod(Method method, Object[] args) {
    try {
        method.invoke(this, args);
    } catch (InvocationTargetException e) {
        // Should not happen.
        Log.w(e, "Unable to invoke method");
    } catch (IllegalAccessException e) {
        // Should not happen.
        Log.w(e, "Unable to invoke method");
    }
    }

    /**
     * This is a wrapper around the new startForeground method, using the older
     * APIs if it is not available.
     */
    void startForegroundCompat(int id, Notification notification) {
    // If we have the new startForeground API, then use it.
    if (mStartForeground != null) {
        mStartForegroundArgs[0] = Integer.valueOf(id);
        mStartForegroundArgs[1] = notification;
        invokeMethod(mStartForeground, mStartForegroundArgs);
        return;
    }

    // Fall back on the old API.
    if (mSetForeground != null) {
        mSetForegroundArgs[0] = Boolean.TRUE;
        invokeMethod(mSetForeground, mSetForegroundArgs);
        // continue
    }

    notifyWrapper(id, notification);
    }

    /**
     * This is a wrapper around the new stopForeground method, using the older
     * APIs if it is not available.
     */
    void stopForegroundCompat(int id) {
    // If we have the new stopForeground API, then use it.
    if (mStopForeground != null) {
        mStopForegroundArgs[0] = Boolean.TRUE;
        invokeMethod(mStopForeground, mStopForegroundArgs);
        return;
    }

    // Fall back on the old API.  Note to cancel BEFORE changing the
    // foreground state, since we could be killed at that point.
    mNM.cancel(id);
    if (mSetForeground != null) {
        mSetForegroundArgs[0] = Boolean.FALSE;
        invokeMethod(mSetForeground, mSetForegroundArgs);
    }
    }

    /**
     *设备等的信息DEVICE,MODEL,SDK,EABI
     */
    @SuppressWarnings("deprecation")
    private void dumpDeviceInformation() {
    StringBuilder sb = new StringBuilder();
    sb.append("DEVICE=").append(Build.DEVICE).append("\n");
    sb.append("MODEL=").append(Build.MODEL).append("\n");
    //MANUFACTURER doesn't exist in android 1.5.
    //sb.append("MANUFACTURER=").append(Build.MANUFACTURER).append("\n");
    sb.append("SDK=").append(Build.VERSION.SDK_INT).append("\n");
    sb.append("EABI=").append(Version.getCpuAbis().get(0)).append("\n");
    Log.i(sb.toString());
    }

    /**
     * 获取Linphone包的信息
     */
    private void dumpInstalledLinphoneInformation() {
    PackageInfo info = null;
    try {
        info = getPackageManager().getPackageInfo(getPackageName(),0);
    } catch (NameNotFoundException nnfe) {}

    if (info != null) {
        Log.i("Linphone version is ", info.versionName + " (" + info.versionCode + ")");
    } else {
        Log.i("Linphone version is unknown");
    }
    }

    public void disableNotificationsAutomaticRegistrationStatusContent() {
    mDisableRegistrationStatus = true;
    }

    public synchronized void sendNotification(int level, int textId) {
    String text = getString(textId);
    if (text.contains("%s") && LinphoneManager.getLc() != null) {
        // Test for null lc is to avoid a NPE when Android mess up badly with the String resources.
        LinphoneProxyConfig lpc = LinphoneManager.getLc().getDefaultProxyConfig();
        String id = lpc != null ? lpc.getIdentity() : "";
        text = String.format(text, id);
    }

    Bitmap bm = null;
    try {
        bm = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
    } catch (Exception e) {
    }
    mNotif = Compatibility.createNotification(this, mNotificationTitle, text, R.drawable.status_level, 0, bm, mNotifContentIntent, true,notifcationsPriority);
    notifyWrapper(NOTIF_ID, mNotif);
    }

    /**
     * Wrap notifier to avoid setting the linphone icons while the service
     * is stopping. When the (rare) bug is triggered, the linphone icon is
     * present despite the service is not running. To trigger it one could
     * stop linphone as soon as it is started. Transport configured with TLS.
     */
    private synchronized void notifyWrapper(int id, Notification notification) {
    if (instance != null && notification != null) {
        mNM.notify(id, notification);
    } else {
        Log.i("Service not ready, discarding notification");
    }
    }

    @Override
    public IBinder onBind(Intent intent) {
    return null;
    }

    @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
    @Override
    public void onTaskRemoved(Intent rootIntent) {
    if (getResources().getBoolean(R.bool.kill_service_with_task_manager)) {
        Log.d("Task removed, stop service");
        LinphoneManager.getLc().setNetworkReachable(false);
        stopSelf();
    }
    super.onTaskRemoved(rootIntent);
    }

    @Override
    public synchronized void onDestroy() {
    LinphoneCore lc = LinphoneManager.getLcIfManagerNotDestroyedOrNull();
    if (lc != null) {
        lc.removeListener(mListener);
    }

    instance = null;
    LinphoneManager.destroy();

    // Make sure our notification is gone.
    stopForegroundCompat(NOTIF_ID);
    mNM.cancel(INCALL_NOTIF_ID);
    mNM.cancel(MESSAGE_NOTIF_ID);

    ((AlarmManager) this.getSystemService(Context.ALARM_SERVICE)).cancel(mkeepAlivePendingIntent);
    getContentResolver().unregisterContentObserver(mObserver);
    super.onDestroy();
    }

    public void setActivityToLaunchOnIncomingReceived(Class<? extends Activity> activity) {
    incomingReceivedActivity = activity;
    resetIntentLaunchedOnNotificationClick();
    }

    private void resetIntentLaunchedOnNotificationClick() {
    Intent notifIntent = new Intent(this, incomingReceivedActivity);
    mNotifContentIntent = PendingIntent.getActivity(this, 0, notifIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    if (mNotif != null) {
        mNotif.contentIntent = mNotifContentIntent;
    }
    notifyWrapper(NOTIF_ID, mNotif);
    }

    protected void onIncomingReceived() {
    //wakeup linphone
    startActivity(new Intent()
              .setClass(this, incomingReceivedActivity)
              .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
    }


    public void tryingNewOutgoingCallButAlreadyInCall() {
    }

    public void tryingNewOutgoingCallButCannotGetCallParameters() {
    }

    public void tryingNewOutgoingCallButWrongDestinationAddress() {
    }

    public void onCallEncryptionChanged(final LinphoneCall call, final boolean encrypted,
                    final String authenticationToken) {
    }
}