src/org/sigrok/androidutils/SigrokApplication.java

   1 /*
   2  * This file is part of the sigrok-androidutils project.
   3  *
   4  * Copyright (C) 2016 Marcus Comstedt <marcus@mc.pp.se>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package org.sigrok.androidutils;
  21
  22 import android.app.Application;
  23 import android.content.Context;
  24 import android.content.pm.ApplicationInfo;
  25 import android.content.pm.PackageManager;
  26 import android.util.Log;
  27
  28 public class SigrokApplication extends Application {
  29
  30         private static final String JNI_LIBS_RESOURCE_ID_META =
  31             "org.sigrok.androidutils.jni_libs_resource_id";
  32         private static final String DEVICE_FILTER_RESOURCE_ID_META =
  33             "org.sigrok.androidutils.device_filter_resource_id";
  34
  35         public SigrokApplication()
  36         {
  37         }
  38
  39         public static void initSigrok(Context context)
  40         {
  41                 ApplicationInfo appInfo = context.getApplicationInfo();
  42                 Environment.initEnvironment(appInfo.sourceDir);
  43                 UsbHelper.setContext(context);
  44                 try {
  45                         appInfo = context.getPackageManager().
  46                                 getApplicationInfo(context.getPackageName(),
  47                                 PackageManager.GET_META_DATA);
  48                 } catch (PackageManager.NameNotFoundException exc) {
  49                 }
  50                 if (appInfo.metaData != null &&
  51                                 appInfo.metaData.containsKey(JNI_LIBS_RESOURCE_ID_META)) {
  52                         int resId = appInfo.metaData.getInt(JNI_LIBS_RESOURCE_ID_META);
  53                         String[] libs = context.getResources().getStringArray(resId);
  54                         int numLibs = libs.length;
  55                         for (int i = 0; i < numLibs; i++) {
  56                                 String libName = libs[i];
  57                                 System.loadLibrary(libName);
  58                         }
  59                 }
  60         }
  61
  62         public static UsbSupplicant createUsbSupplicant(Context context)
  63         {
  64                 ApplicationInfo appInfo = context.getApplicationInfo();
  65                 try {
  66                         appInfo = context.getPackageManager().
  67                                 getApplicationInfo(context.getPackageName(),
  68                                 PackageManager.GET_META_DATA);
  69                 } catch (PackageManager.NameNotFoundException exc) {
  70                 }
  71                 if (appInfo.metaData != null &&
  72                                 appInfo.metaData.containsKey(DEVICE_FILTER_RESOURCE_ID_META)) {
  73                         int resId = appInfo.metaData.getInt(DEVICE_FILTER_RESOURCE_ID_META);
  74                         return new UsbSupplicant(context, resId);
  75                 }
  76                 Log.e("SigrokApplication", "Can't create UsbSupplicant (resource ID missing)");
  77                 return null;
  78         }
  79
  80         @Override
  81         public void onCreate()
  82         {
  83                 super.onCreate();
  84                 initSigrok(getApplicationContext());
  85         }
  86 }