app/src/main/java/ai/suanzi/rtmpclient/UsbMonitor.java

   1 package ai.suanzi.rtmpclient;
   2
   3 import android.hardware.usb.UsbManager;
   4 import android.content.Context;
   5 import android.hardware.usb.UsbDevice;
   6
   7 import java.util.ArrayList;
   8 import java.util.HashMap;
   9 import java.util.Iterator;
  10 import java.util.List;
  11 import org.apache.log4j.Logger;
  12 import android.app.PendingIntent;
  13 import android.content.Intent;
  14 import android.content.IntentFilter;
  15 import android.content.BroadcastReceiver;
  16
  17 public class UsbMonitor {
  18
  19     private UsbListener mListener;
  20     private Context mContext;
  21     private UsbManager mUsbManager;
  22     private List<UsbDevice> mUsbCameraList = new ArrayList<>();
  23
  24     private static Logger gLogger = Logger.getLogger("UsbMonitor");
  25
  26     public UsbMonitor(UsbListener listener, Context context){
  27         mListener = listener;
  28         mContext = context;
  29         mUsbManager = (UsbManager) mContext.getSystemService(Context.USB_SERVICE);
  30
  31         HashMap<String, UsbDevice> deviceList = mUsbManager.getDeviceList();
  32         gLogger.error("device list size : " + deviceList.size());
  33         Iterator<UsbDevice> deviceIterator = deviceList.values().iterator();
  34         //PendingIntent mPermissionIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(ACTION_USB_PERMISSION), 0);
  35         IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_DEVICE_DETACHED);
  36         mContext.registerReceiver(mUsbReceiver, filter);
  37         filter = new IntentFilter(UsbManager.ACTION_USB_DEVICE_ATTACHED);
  38         mContext.registerReceiver(mUsbReceiver, filter);
  39         filter = new IntentFilter(ACTION_USB_PERMISSION);
  40         mContext.registerReceiver(mUsbReceiver, filter);
  41
  42         while (deviceIterator.hasNext()) {
  43             UsbDevice device = deviceIterator.next();
  44             gLogger.error(device.toString());
  45             if(isUvcCamera(device))  mUsbCameraList.add(device);
  46         }
  47             //mUsbManager.requestPermission(device, mPermissionIntent);
  48     }
  49
  50     private boolean isUvcCamera(UsbDevice device){
  51         return (device.getDeviceProtocol() == 1 && device.getProductName().contains("Camera"));
  52     }
  53
  54     public boolean hasUsbCamera(){
  55         gLogger.error("hasUsbCamera - size: " + mUsbCameraList.size());
  56         return (mUsbCameraList.size() > 0 ? true : false);
  57     }
  58
  59     public int getUsbCameraCount(){
  60         return mUsbCameraList.size();
  61     }
  62
  63     private static final String ACTION_USB_PERMISSION =  "ai.suanzi.rtmpclient.UsbMonitor.USB_PERMISSION";
  64
  65     private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
  66
  67         public void onReceive(Context context, Intent intent) {
  68             gLogger.error("onReceive");
  69             String action = intent.getAction();
  70             if (ACTION_USB_PERMISSION.equals(action)) {
  71                 synchronized (this) {
  72                     UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
  73
  74                     if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, true)) {
  75                         if(device != null){
  76                             gLogger.error( "extra permission granted");
  77                             //call method to set up device communication
  78                         }
  79                     }
  80                     else {
  81                         gLogger.error("permission denied for device. " + device);
  82                     }
  83                 }
  84             } else if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)){
  85                 UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
  86                 if (device != null){
  87                     gLogger.error("Device plug out");
  88                     gLogger.error(device.toString());
  89                     if(isUvcCamera(device)) {
  90                         mUsbCameraList.remove(device);
  91                         mListener.onCameraConnected();
  92                     }
  93                 }
  94             } else if (UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(action)) {
  95                 UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
  96                 gLogger.error("Device plug in");
  97                 gLogger.error(device.toString());
  98                 if(isUvcCamera(device)) {
  99                     mUsbCameraList.add(device);
 100                     mListener.onCameraDisconnected();
 101                 }
 102             }
 103         }
 104     };
 105
 106     public interface UsbListener {
 107         void onCameraConnected();
 108         void onCameraDisconnected();
 109     }
 110 }