Refactoring

Signed-off-by: Mario Danic <mario@lovelyhq.com>

app/src/main/java/com/nextcloud/talk/activities/CallActivity.java

@@ -33,7 +33,6 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.res.Configuration;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.support.annotation.NonNull;
@@ -81,7 +80,6 @@ import com.nextcloud.talk.utils.database.user.UserUtils;
 import com.nextcloud.talk.webrtc.MagicAudioManager;
 import com.nextcloud.talk.webrtc.MagicPeerConnectionWrapper;
 import com.nextcloud.talk.webrtc.MagicWebRTCUtils;
-import com.nextcloud.talk.webrtc.MagicWebRTCLists;
 
 import org.apache.commons.lang3.StringEscapeUtils;
 import org.greenrobot.eventbus.EventBus;
@@ -487,9 +485,7 @@ public class CallActivity extends AppCompatActivity {
         if (camera2EnumeratorIsSupported) {
             cameraEnumerator = new Camera2Enumerator(this);
         } else {
-            cameraEnumerator = new Camera1Enumerator(!MagicWebRTCLists.HARDWARE_ACCELERATION_VENDOR_BLACKLIST.contains(Build
+            cameraEnumerator = new Camera1Enumerator(MagicWebRTCUtils.shouldEnableVideoHardwareAcceleration());
-                    .MANUFACTURER.toLowerCase()) && !MagicWebRTCLists.HARDWARE_ACCELERATION_DEVICE_BLACKLIST.contains
-                    (Build.MODEL));
         }
     }
 

app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.java

@@ -20,12 +20,10 @@
  */
 package com.nextcloud.talk.application;
 
-import android.annotation.SuppressLint;
 import android.content.Context;
 import android.os.Build;
 import android.support.multidex.MultiDex;
 import android.support.multidex.MultiDexApplication;
-import android.support.v7.widget.AppCompatDrawableManager;
 import android.util.Log;
 
 import com.evernote.android.job.JobManager;
@@ -39,8 +37,9 @@ import com.nextcloud.talk.dagger.modules.RestModule;
 import com.nextcloud.talk.jobs.AccountRemovalJob;
 import com.nextcloud.talk.jobs.PushRegistrationJob;
 import com.nextcloud.talk.jobs.creator.MagicJobCreator;
+import com.nextcloud.talk.utils.DisplayUtils;
 import com.nextcloud.talk.utils.database.user.UserModule;
-import com.nextcloud.talk.webrtc.MagicWebRTCLists;
+import com.nextcloud.talk.webrtc.MagicWebRTCUtils;
 import com.squareup.leakcanary.LeakCanary;
 import com.squareup.leakcanary.RefWatcher;
 
@@ -48,9 +47,6 @@ import org.webrtc.PeerConnectionFactory;
 import org.webrtc.voiceengine.WebRtcAudioManager;
 import org.webrtc.voiceengine.WebRtcAudioUtils;
 
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
 import java.security.GeneralSecurityException;
 
 import javax.inject.Singleton;
@@ -89,43 +85,18 @@ public class NextcloudTalkApplication extends MultiDexApplication {
     //endregion
 
     //region private methods
-    // Solution inspired by https://stackoverflow.com/questions/34936590/why-isnt-my-vector-drawable-scaling-as-expected
-    private void useCompatVectorIfNeeded() {
-        if (Build.VERSION.SDK_INT < 23) {
-            try {
-                @SuppressLint("RestrictedApi") AppCompatDrawableManager drawableManager = AppCompatDrawableManager.get();
-                Class<?> inflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$InflateDelegate");
-                Class<?> vdcInflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$VdcInflateDelegate");
-
-                Constructor<?> constructor = vdcInflateDelegateClass.getDeclaredConstructor();
-                constructor.setAccessible(true);
-                Object vdcInflateDelegate = constructor.newInstance();
-
-                Class<?> args[] = {String.class, inflateDelegateClass};
-                Method addDelegate = AppCompatDrawableManager.class.getDeclaredMethod("addDelegate", args);
-                addDelegate.setAccessible(true);
-                addDelegate.invoke(drawableManager, "vector", vdcInflateDelegate);
-            } catch (ClassNotFoundException | NoSuchMethodException | InstantiationException |
-                    InvocationTargetException | IllegalAccessException e) {
-                Log.e(TAG, "Failed to use reflection to enable proper vector scaling");
-            }
-        }
-    }
-
     private void initializeWebRtc() {
         try {
-            if (MagicWebRTCLists.HARDWARE_AEC_BLACKLIST.contains(Build.MODEL)) {
+            if (MagicWebRTCUtils.HARDWARE_AEC_BLACKLIST.contains(Build.MODEL)) {
                 WebRtcAudioUtils.setWebRtcBasedAcousticEchoCanceler(true);
             }
 
-            if (!MagicWebRTCLists.OPEN_SL_ES_WHITELIST.contains(Build.MODEL)) {
+            if (!MagicWebRTCUtils.OPEN_SL_ES_WHITELIST.contains(Build.MODEL)) {
                 WebRtcAudioManager.setBlacklistDeviceForOpenSLESUsage(true);
             }
 
             PeerConnectionFactory.initialize(PeerConnectionFactory.InitializationOptions.builder(this)
-                    .setEnableVideoHwAcceleration(!MagicWebRTCLists.HARDWARE_ACCELERATION_VENDOR_BLACKLIST.contains(Build
+                    .setEnableVideoHwAcceleration(MagicWebRTCUtils.shouldEnableVideoHardwareAcceleration())
-                            .MANUFACTURER.toLowerCase()) && !MagicWebRTCLists.HARDWARE_ACCELERATION_DEVICE_BLACKLIST
-                            .contains(Build.MODEL))
                     .createInitializationOptions());
         } catch (UnsatisfiedLinkError e) {
             Log.w(TAG, e);
@@ -144,7 +115,7 @@ public class NextcloudTalkApplication extends MultiDexApplication {
         sharedApplication = this;
 
         initializeWebRtc();
-        useCompatVectorIfNeeded();
+        DisplayUtils.useCompatVectorIfNeeded();
 
 
         try {

app/src/main/java/com/nextcloud/talk/controllers/AccountVerificationController.java

@@ -40,7 +40,7 @@ import com.nextcloud.talk.api.helpers.api.ApiHelper;
 import com.nextcloud.talk.application.NextcloudTalkApplication;
 import com.nextcloud.talk.controllers.base.BaseController;
 import com.nextcloud.talk.jobs.PushRegistrationJob;
-import com.nextcloud.talk.utils.ErrorMessageHolder;
+import com.nextcloud.talk.utils.ApplicationWideMessageHolder;
 import com.nextcloud.talk.utils.bundle.BundleKeys;
 import com.nextcloud.talk.utils.database.user.UserUtils;
 
@@ -218,8 +218,8 @@ public class AccountVerificationController extends BaseController {
                                                                     .popChangeHandler(new HorizontalChangeHandler()));
                                                         } else {
                                                             if (isAccountImport) {
-                                                                ErrorMessageHolder.getInstance().setMessageType(
+                                                                ApplicationWideMessageHolder.getInstance().setMessageType(
-                                                                        ErrorMessageHolder.ErrorMessageType.ACCOUNT_WAS_IMPORTED);
+                                                                        ApplicationWideMessageHolder.MessageType.ACCOUNT_WAS_IMPORTED);
                                                             }
                                                             getRouter().popToRoot();
                                                         }
@@ -247,8 +247,8 @@ public class AccountVerificationController extends BaseController {
                 }, throwable -> {
                     progressText.setText(String.format(getResources().getString(
                             R.string.nc_nextcloud_talk_app_not_installed), getResources().getString(R.string.nc_app_name)));
-                    ErrorMessageHolder.getInstance().setMessageType(
+                    ApplicationWideMessageHolder.getInstance().setMessageType(
-                            ErrorMessageHolder.ErrorMessageType.SERVER_WITHOUT_TALK);
+                            ApplicationWideMessageHolder.MessageType.SERVER_WITHOUT_TALK);
 
                     abortVerification();
                 }, () -> dispose(roomsQueryDisposable));
@@ -317,8 +317,8 @@ public class AccountVerificationController extends BaseController {
                 }
             });
         } else {
-            ErrorMessageHolder.getInstance().setMessageType(
+            ApplicationWideMessageHolder.getInstance().setMessageType(
-                    ErrorMessageHolder.ErrorMessageType.FAILED_TO_IMPORT_ACCOUNT);
+                    ApplicationWideMessageHolder.MessageType.FAILED_TO_IMPORT_ACCOUNT);
             new Handler().postDelayed(new Runnable() {
                 @Override
                 public void run() {

app/src/main/java/com/nextcloud/talk/controllers/ServerSelectionController.java

@@ -43,7 +43,7 @@ import com.nextcloud.talk.api.helpers.api.ApiHelper;
 import com.nextcloud.talk.application.NextcloudTalkApplication;
 import com.nextcloud.talk.controllers.base.BaseController;
 import com.nextcloud.talk.utils.AccountUtils;
-import com.nextcloud.talk.utils.ErrorMessageHolder;
+import com.nextcloud.talk.utils.ApplicationWideMessageHolder;
 import com.nextcloud.talk.utils.bundle.BundleKeys;
 import com.nextcloud.talk.utils.database.user.UserUtils;
 
@@ -298,22 +298,22 @@ public class ServerSelectionController extends BaseController {
     @Override
     protected void onAttach(@NonNull View view) {
         super.onAttach(view);
-        if (ErrorMessageHolder.getInstance().getMessageType() != null) {
+        if (ApplicationWideMessageHolder.getInstance().getMessageType() != null) {
-            if (ErrorMessageHolder.getInstance().getMessageType()
+            if (ApplicationWideMessageHolder.getInstance().getMessageType()
-                    .equals(ErrorMessageHolder.ErrorMessageType.ACCOUNT_SCHEDULED_FOR_DELETION)) {
+                    .equals(ApplicationWideMessageHolder.MessageType.ACCOUNT_SCHEDULED_FOR_DELETION)) {
                 textFieldBoxes.setError(getResources().getString(R.string.nc_account_scheduled_for_deletion),
                         false);
-                ErrorMessageHolder.getInstance().setMessageType(null);
+                ApplicationWideMessageHolder.getInstance().setMessageType(null);
-            } else if (ErrorMessageHolder.getInstance().getMessageType()
+            } else if (ApplicationWideMessageHolder.getInstance().getMessageType()
-                    .equals(ErrorMessageHolder.ErrorMessageType.SERVER_WITHOUT_TALK)) {
+                    .equals(ApplicationWideMessageHolder.MessageType.SERVER_WITHOUT_TALK)) {
                 textFieldBoxes.setError(getResources().getString(R.string.nc_settings_no_talk_installed),
                         false);
-            } else if (ErrorMessageHolder.getInstance().getMessageType()
+            } else if (ApplicationWideMessageHolder.getInstance().getMessageType()
-                    .equals(ErrorMessageHolder.ErrorMessageType.FAILED_TO_IMPORT_ACCOUNT)) {
+                    .equals(ApplicationWideMessageHolder.MessageType.FAILED_TO_IMPORT_ACCOUNT)) {
                 textFieldBoxes.setError(getResources().getString(R.string.nc_server_failed_to_import_account),
                         false);
             }
-            ErrorMessageHolder.getInstance().setMessageType(null);
+            ApplicationWideMessageHolder.getInstance().setMessageType(null);
         }
     }
 

app/src/main/java/com/nextcloud/talk/controllers/SettingsController.java

@@ -48,7 +48,7 @@ import com.nextcloud.talk.application.NextcloudTalkApplication;
 import com.nextcloud.talk.controllers.base.BaseController;
 import com.nextcloud.talk.jobs.AccountRemovalJob;
 import com.nextcloud.talk.persistence.entities.UserEntity;
-import com.nextcloud.talk.utils.ErrorMessageHolder;
+import com.nextcloud.talk.utils.ApplicationWideMessageHolder;
 import com.nextcloud.talk.utils.database.user.UserUtils;
 import com.nextcloud.talk.utils.glide.GlideApp;
 import com.nextcloud.talk.utils.preferences.AppPreferences;
@@ -356,8 +356,8 @@ public class SettingsController extends BaseController {
 
         addAccountButton.setEnabled(true);
 
-        if (ErrorMessageHolder.getInstance().getMessageType() != null) {
+        if (ApplicationWideMessageHolder.getInstance().getMessageType() != null) {
-            switch (ErrorMessageHolder.getInstance().getMessageType()) {
+            switch (ApplicationWideMessageHolder.getInstance().getMessageType()) {
                 case ACCOUNT_UPDATED_NOT_ADDED:
                     messageText.setTextColor(getResources().getColor(R.color.colorPrimary));
                     messageText.setText(getResources().getString(R.string.nc_settings_account_updated));
@@ -386,7 +386,7 @@ public class SettingsController extends BaseController {
                     messageView.setVisibility(View.GONE);
                     break;
             }
-            ErrorMessageHolder.getInstance().setMessageType(null);
+            ApplicationWideMessageHolder.getInstance().setMessageType(null);
 
             messageView.animate()
                     .translationY(0)

app/src/main/java/com/nextcloud/talk/controllers/WebViewLoginController.java

@@ -49,7 +49,7 @@ import com.nextcloud.talk.controllers.base.BaseController;
 import com.nextcloud.talk.events.CertificateEvent;
 import com.nextcloud.talk.models.LoginData;
 import com.nextcloud.talk.persistence.entities.UserEntity;
-import com.nextcloud.talk.utils.ErrorMessageHolder;
+import com.nextcloud.talk.utils.ApplicationWideMessageHolder;
 import com.nextcloud.talk.utils.bundle.BundleBuilder;
 import com.nextcloud.talk.utils.bundle.BundleKeys;
 import com.nextcloud.talk.utils.database.user.UserUtils;
@@ -268,28 +268,28 @@ public class WebViewLoginController extends BaseController {
 
             UserEntity currentUser = userUtils.getCurrentUser();
 
-            ErrorMessageHolder.ErrorMessageType errorMessageType = null;
+            ApplicationWideMessageHolder.MessageType messageType = null;
             if (currentUser != null && isPasswordUpdate &&
                     !currentUser.getUsername().equals(loginData.getUsername())) {
-                ErrorMessageHolder.getInstance().setMessageType(
+                ApplicationWideMessageHolder.getInstance().setMessageType(
-                        ErrorMessageHolder.ErrorMessageType.WRONG_ACCOUNT);
+                        ApplicationWideMessageHolder.MessageType.WRONG_ACCOUNT);
                 getRouter().popToRoot();
             } else {
 
                 if (!isPasswordUpdate && userUtils.getIfUserWithUsernameAndServer(loginData.getUsername(), baseUrl)) {
-                    errorMessageType = ErrorMessageHolder.ErrorMessageType.ACCOUNT_UPDATED_NOT_ADDED;
+                    messageType = ApplicationWideMessageHolder.MessageType.ACCOUNT_UPDATED_NOT_ADDED;
                 }
 
                 if (userUtils.checkIfUserIsScheduledForDeletion(loginData.getUsername(), baseUrl)) {
-                    ErrorMessageHolder.getInstance().setMessageType(
+                    ApplicationWideMessageHolder.getInstance().setMessageType(
-                            ErrorMessageHolder.ErrorMessageType.ACCOUNT_SCHEDULED_FOR_DELETION);
+                            ApplicationWideMessageHolder.MessageType.ACCOUNT_SCHEDULED_FOR_DELETION);
                     getRouter().popToRoot();
                 }
 
-                ErrorMessageHolder.ErrorMessageType finalErrorMessageType = errorMessageType;
+                ApplicationWideMessageHolder.MessageType finalMessageType = messageType;
                 cookieManager.getCookieStore().removeAll();
 
-                if (!isPasswordUpdate && finalErrorMessageType == null) {
+                if (!isPasswordUpdate && finalMessageType == null) {
                     BundleBuilder bundleBuilder = new BundleBuilder(new Bundle());
                     bundleBuilder.putString(BundleKeys.KEY_USERNAME, loginData.getUsername());
                     bundleBuilder.putString(BundleKeys.KEY_TOKEN, loginData.getToken());
@@ -315,16 +315,16 @@ public class WebViewLoginController extends BaseController {
                                     null, null, null, true,
                                     null, currentUser.getId()).
                                     subscribe(userEntity -> {
-                                                if (finalErrorMessageType != null) {
+                                                if (finalMessageType != null) {
-                                                    ErrorMessageHolder.getInstance().setMessageType(finalErrorMessageType);
+                                                    ApplicationWideMessageHolder.getInstance().setMessageType(finalMessageType);
                                                 }
                                                 getRouter().popToRoot();
                                             }, throwable -> dispose(),
                                             this::dispose);
                         }
                     } else {
-                        if (finalErrorMessageType != null) {
+                        if (finalMessageType != null) {
-                            ErrorMessageHolder.getInstance().setMessageType(finalErrorMessageType);
+                            ApplicationWideMessageHolder.getInstance().setMessageType(finalMessageType);
                         }
                         getRouter().popToRoot();
 

app/src/main/java/com/nextcloud/talk/controllers/bottomsheet/EntryMenuController.java

@@ -40,7 +40,7 @@ import com.nextcloud.talk.application.NextcloudTalkApplication;
 import com.nextcloud.talk.controllers.base.BaseController;
 import com.nextcloud.talk.events.BottomSheetLockEvent;
 import com.nextcloud.talk.persistence.entities.UserEntity;
-import com.nextcloud.talk.utils.ErrorMessageHolder;
+import com.nextcloud.talk.utils.ApplicationWideMessageHolder;
 import com.nextcloud.talk.utils.ShareUtils;
 import com.nextcloud.talk.utils.bundle.BundleKeys;
 import com.nextcloud.talk.utils.database.user.UserUtils;
@@ -102,10 +102,10 @@ public class EntryMenuController extends BaseController {
     @Override
     protected void onAttach(@NonNull View view) {
         super.onAttach(view);
-        if (ErrorMessageHolder.getInstance().getMessageType() != null &&
+        if (ApplicationWideMessageHolder.getInstance().getMessageType() != null &&
-                ErrorMessageHolder.getInstance().getMessageType().equals(ErrorMessageHolder.ErrorMessageType.CALL_PASSWORD_WRONG)) {
+                ApplicationWideMessageHolder.getInstance().getMessageType().equals(ApplicationWideMessageHolder.MessageType.CALL_PASSWORD_WRONG)) {
             textFieldBoxes.setError(getResources().getString(R.string.nc_wrong_password), true);
-            ErrorMessageHolder.getInstance().setMessageType(null);
+            ApplicationWideMessageHolder.getInstance().setMessageType(null);
             if (proceedButton.isEnabled()) {
                 proceedButton.setEnabled(false);
                 proceedButton.setAlpha(0.7f);

app/src/main/java/com/nextcloud/talk/controllers/bottomsheet/OperationsMenuController.java

@@ -43,7 +43,7 @@ import com.nextcloud.talk.controllers.base.BaseController;
 import com.nextcloud.talk.events.BottomSheetLockEvent;
 import com.nextcloud.talk.persistence.entities.UserEntity;
 import com.nextcloud.talk.utils.ColorUtils;
-import com.nextcloud.talk.utils.ErrorMessageHolder;
+import com.nextcloud.talk.utils.ApplicationWideMessageHolder;
 import com.nextcloud.talk.utils.bundle.BundleBuilder;
 import com.nextcloud.talk.utils.bundle.BundleKeys;
 import com.nextcloud.talk.utils.database.user.UserUtils;
@@ -276,7 +276,7 @@ public class OperationsMenuController extends BaseController {
                     if (((HttpException) e).response().code() == 403) {
                         eventBus.post(new BottomSheetLockEvent(true, 0, false,
                                 false));
-                        ErrorMessageHolder.getInstance().setMessageType(ErrorMessageHolder.ErrorMessageType.CALL_PASSWORD_WRONG);
+                        ApplicationWideMessageHolder.getInstance().setMessageType(ApplicationWideMessageHolder.MessageType.CALL_PASSWORD_WRONG);
                         getRouter().popCurrentController();
                     } else {
                         showResultImage(false);

app/src/main/java/com/nextcloud/talk/utils/ApplicationWideMessageHolder.java

@@ -22,23 +22,23 @@ package com.nextcloud.talk.utils;
 
 import android.support.annotation.Nullable;
 
-public class ErrorMessageHolder {
+public class ApplicationWideMessageHolder {
-    private static final ErrorMessageHolder holder = new ErrorMessageHolder();
+    private static final ApplicationWideMessageHolder holder = new ApplicationWideMessageHolder();
-    private ErrorMessageType errorMessageType;
+    private MessageType messageType;
 
-    public static ErrorMessageHolder getInstance() {
+    public static ApplicationWideMessageHolder getInstance() {
         return holder;
     }
 
-    public ErrorMessageType getMessageType() {
+    public MessageType getMessageType() {
-        return errorMessageType;
+        return messageType;
     }
 
-    public void setMessageType(@Nullable ErrorMessageType errorMessageType) {
+    public void setMessageType(@Nullable MessageType messageType) {
-        this.errorMessageType = errorMessageType;
+        this.messageType = messageType;
     }
 
-    public enum ErrorMessageType {
+    public enum MessageType {
         WRONG_ACCOUNT, ACCOUNT_UPDATED_NOT_ADDED, ACCOUNT_SCHEDULED_FOR_DELETION, SERVER_WITHOUT_TALK,
         FAILED_TO_IMPORT_ACCOUNT, ACCOUNT_WAS_IMPORTED, CALL_PASSWORD_WRONG
     }

app/src/main/java/com/nextcloud/talk/utils/DisplayHelper.java

@@ -1,37 +0,0 @@
-/*
- * Nextcloud Talk application
- *
- * @author Mario Danic
- * Copyright (C) 2017 Mario Danic <mario@lovelyhq.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.nextcloud.talk.utils;
-
-import android.content.Context;
-import android.content.res.Resources;
-import android.util.DisplayMetrics;
-
-public class DisplayHelper {
-
-    private static final String TAG = "DIsplayHelper";
-
-    public static float convertDpToPixel(float dp, Context context) {
-        Resources resources = context.getResources();
-        DisplayMetrics metrics = resources.getDisplayMetrics();
-        float px = dp * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT);
-        return px;
-    }
-}

app/src/main/java/com/nextcloud/talk/utils/DisplayUtils.java

@@ -0,0 +1,69 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Mario Danic
+ * Copyright (C) 2017 Mario Danic <mario@lovelyhq.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.utils;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.res.Resources;
+import android.os.Build;
+import android.support.v7.widget.AppCompatDrawableManager;
+import android.util.DisplayMetrics;
+import android.util.Log;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class DisplayUtils {
+
+    private static final String TAG = "DIsplayHelper";
+
+    public static float convertDpToPixel(float dp, Context context) {
+        Resources resources = context.getResources();
+        DisplayMetrics metrics = resources.getDisplayMetrics();
+        float px = dp * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT);
+        return px;
+    }
+
+    // Solution inspired by https://stackoverflow.com/questions/34936590/why-isnt-my-vector-drawable-scaling-as-expected
+    public static void useCompatVectorIfNeeded() {
+        if (Build.VERSION.SDK_INT < 23) {
+            try {
+                @SuppressLint("RestrictedApi") AppCompatDrawableManager drawableManager = AppCompatDrawableManager.get();
+                Class<?> inflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$InflateDelegate");
+                Class<?> vdcInflateDelegateClass = Class.forName("android.support.v7.widget.AppCompatDrawableManager$VdcInflateDelegate");
+
+                Constructor<?> constructor = vdcInflateDelegateClass.getDeclaredConstructor();
+                constructor.setAccessible(true);
+                Object vdcInflateDelegate = constructor.newInstance();
+
+                Class<?> args[] = {String.class, inflateDelegateClass};
+                Method addDelegate = AppCompatDrawableManager.class.getDeclaredMethod("addDelegate", args);
+                addDelegate.setAccessible(true);
+                addDelegate.invoke(drawableManager, "vector", vdcInflateDelegate);
+            } catch (ClassNotFoundException | NoSuchMethodException | InstantiationException |
+                    InvocationTargetException | IllegalAccessException e) {
+                Log.e(TAG, "Failed to use reflection to enable proper vector scaling");
+            }
+        }
+    }
+
+}

app/src/main/java/com/nextcloud/talk/webrtc/MagicWebRTCUtils.java

@@ -27,23 +27,69 @@
  * tree. An additional intellectual property rights grant can be found
  * in the file PATENTS.  All contributing project authors may
  * be found in the AUTHORS file in the root of the source tree.
- *
  */
 
 package com.nextcloud.talk.webrtc;
 
+import android.os.Build;
 import android.util.Log;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 public class MagicWebRTCUtils {
     private static final String TAG = "MagicWebRTCUtils";
 
+    /* AEC blacklist and SL_ES_WHITELIST are borrowed from Signal
+       https://github.com/WhisperSystems/Signal-Android/blob/551470123d006b76a68d705d131bb12513a5e683/src/org/thoughtcrime/securesms/ApplicationContext.java
+    */
+    public static Set<String> HARDWARE_AEC_BLACKLIST = new HashSet<String>() {{
+        add("D6503"); // Sony Xperia Z2 D6503
+        add("ONE A2005"); // OnePlus 2
+        add("MotoG3"); // Moto G (3rd Generation)
+        add("Nexus 6P"); // Nexus 6p
+        add("Pixel"); // Pixel
+        add("Pixel XL"); // Pixel XL
+        add("MI 4LTE"); // Xiami Mi4
+        add("Redmi Note 3"); // Redmi Note 3
+        add("Redmi Note 4"); // Redmi Note 4
+        add("SM-G900F"); // Samsung Galaxy S5
+        add("g3_kt_kr"); // LG G3
+        add("SM-G930F"); // Samsung Galaxy S7
+        add("Xperia SP"); // Sony Xperia SP
+        add("Nexus 6"); // Nexus 6
+        add("ONE E1003"); // OnePlus X
+        add("One"); // OnePlus One
+        add("Moto G5");
+    }};
+
+    public static Set<String> OPEN_SL_ES_WHITELIST = new HashSet<String>() {{
+        add("Pixel");
+        add("Pixel XL");
+    }};
+
+    private static Set<String> HARDWARE_ACCELERATION_DEVICE_BLACKLIST = new HashSet<String>() {{
+        add("GT-I9100"); // Samsung Galaxy S2
+        add("GT-N8013"); // Samsung Galaxy Note 10.1
+        add("SM-G930F"); // Samsung Galaxy S7
+        add("AGS-W09"); // Huawei MediaPad T3 10
+    }};
+
+    private static Set<String> HARDWARE_ACCELERATION_VENDOR_BLACKLIST = new HashSet<String>() {{
+        add("samsung");
+    }};
+
+    public static boolean shouldEnableVideoHardwareAcceleration() {
+        return (!HARDWARE_ACCELERATION_VENDOR_BLACKLIST.contains(Build.MANUFACTURER.toLowerCase())
+                && !HARDWARE_ACCELERATION_DEVICE_BLACKLIST.contains(Build.MODEL));
+    }
+
     public static String preferCodec(String sdpDescription, String codec, boolean isAudio) {
         final String[] lines = sdpDescription.split("\r\n");
         final int mLineIndex = findMediaDescriptionLine(isAudio, lines);

app/src/main/java/com/nextcloud/talk/webrtc/MagicWebRtcLists.java

@@ -1,66 +0,0 @@
-/*
- * Nextcloud Talk application
- *
- * @author Mario Danic
- * Copyright (C) 2017 Mario Danic <mario@lovelyhq.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.nextcloud.talk.webrtc;
-
-import java.util.HashSet;
-import java.util.Set;
-
-public class MagicWebRTCLists {
-    /*
-       AEC blacklist and SL_ES_WHITELIST are borrowed from Signal
-       https://github.com/WhisperSystems/Signal-Android/blob/551470123d006b76a68d705d131bb12513a5e683/src/org/thoughtcrime/securesms/ApplicationContext.java
-    */
-    public static Set<String> HARDWARE_AEC_BLACKLIST = new HashSet<String>() {{
-        add("D6503"); // Sony Xperia Z2 D6503
-        add("ONE A2005"); // OnePlus 2
-        add("MotoG3"); // Moto G (3rd Generation)
-        add("Nexus 6P"); // Nexus 6p
-        add("Pixel"); // Pixel
-        add("Pixel XL"); // Pixel XL
-        add("MI 4LTE"); // Xiami Mi4
-        add("Redmi Note 3"); // Redmi Note 3
-        add("Redmi Note 4"); // Redmi Note 4
-        add("SM-G900F"); // Samsung Galaxy S5
-        add("g3_kt_kr"); // LG G3
-        add("SM-G930F"); // Samsung Galaxy S7
-        add("Xperia SP"); // Sony Xperia SP
-        add("Nexus 6"); // Nexus 6
-        add("ONE E1003"); // OnePlus X
-        add("One"); // OnePlus One
-        add("Moto G5");
-    }};
-
-    public static Set<String> OPEN_SL_ES_WHITELIST = new HashSet<String>() {{
-        add("Pixel");
-        add("Pixel XL");
-    }};
-
-    public static Set<String> HARDWARE_ACCELERATION_DEVICE_BLACKLIST = new HashSet<String>() {{
-        add("GT-I9100"); // Samsung Galaxy S2
-        add("GT-N8013"); // Samsung Galaxy Note 10.1
-        add("SM-G930F"); // Samsung Galaxy S7
-        add("AGS-W09"); // Huawei MediaPad T3 10
-    }};
-
-    public static Set<String> HARDWARE_ACCELERATION_VENDOR_BLACKLIST = new HashSet<String>() {{
-        add("samsung");
-    }};
-}