More tolerant socket timeout

Merge pull request #13 from fwiesel/normalize_relative_brightness
Normalize volume for brightness
2024-04-08 23:21:34 +02:00 · 2024-04-06 23:39:05 +02:00 · 2024-04-03 17:18:18 +02:00 · 2024-03-30 22:33:23 +01:00 · 2024-03-30 07:36:56 +01:00 · 2024-03-26 21:17:42 +01:00
143 changed files with 3379 additions and 1398 deletions
@@ -1,15 +1,9 @@
 *.iml
 .gradle
 /local.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
+/.idea
 .DS_Store
 /build
+/app/build
+/app/release
 /captures
-.externalNativeBuild
-.cxx
-local.properties
@@ -1,3 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="AndroidProjectSystem">
-    <option name="providerId" value="com.android.tools.idea.GradleProjectSystem" />
-  </component>
-</project>
@@ -1,123 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <code_scheme name="Project" version="173">
-    <JetCodeStyleSettings>
-      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
-    </JetCodeStyleSettings>
-    <codeStyleSettings language="XML">
-      <option name="FORCE_REARRANGE_MODE" value="1" />
-      <indentOptions>
-        <option name="CONTINUATION_INDENT_SIZE" value="4" />
-      </indentOptions>
-      <arrangement>
-        <rules>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>xmlns:android</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>^$</XML_NAMESPACE>
-                </AND>
-              </match>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>xmlns:.*</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>^$</XML_NAMESPACE>
-                </AND>
-              </match>
-              <order>BY_NAME</order>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>.*:id</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
-                </AND>
-              </match>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>.*:name</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
-                </AND>
-              </match>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>name</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>^$</XML_NAMESPACE>
-                </AND>
-              </match>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>style</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>^$</XML_NAMESPACE>
-                </AND>
-              </match>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>.*</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>^$</XML_NAMESPACE>
-                </AND>
-              </match>
-              <order>BY_NAME</order>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>.*</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
-                </AND>
-              </match>
-              <order>ANDROID_ATTRIBUTE_ORDER</order>
-            </rule>
-          </section>
-          <section>
-            <rule>
-              <match>
-                <AND>
-                  <NAME>.*</NAME>
-                  <XML_ATTRIBUTE />
-                  <XML_NAMESPACE>.*</XML_NAMESPACE>
-                </AND>
-              </match>
-              <order>BY_NAME</order>
-            </rule>
-          </section>
-        </rules>
-      </arrangement>
-    </codeStyleSettings>
-    <codeStyleSettings language="kotlin">
-      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
-    </codeStyleSettings>
-  </code_scheme>
-</component>
@@ -1,5 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <state>
-    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
-  </state>
-</component>
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="21" />
-  </component>
-</project>
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="deploymentTargetSelector">
-    <selectionStates>
-      <SelectionState runConfigName="app">
-        <option name="selectionMode" value="DROPDOWN" />
-      </SelectionState>
-    </selectionStates>
-  </component>
-</project>
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleMigrationSettings" migrationVersion="1" />
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="testRunner" value="CHOOSE_PER_TEST" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectMigrations">
-    <option name="MigrateToGradleLocalJavaHome">
-      <set>
-        <option value="$PROJECT_DIR$" />
-      </set>
-    </option>
-  </component>
-</project>
@@ -1,9 +0,0 @@
-<project version="4">
-  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>
@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.intellij.execution.junit.AbstractAllInDirectoryConfigurationProducer" />
-        <option value="com.intellij.execution.junit.AllInPackageConfigurationProducer" />
-        <option value="com.intellij.execution.junit.PatternConfigurationProducer" />
-        <option value="com.intellij.execution.junit.TestInClassConfigurationProducer" />
-        <option value="com.intellij.execution.junit.UniqueIdConfigurationProducer" />
-        <option value="com.intellij.execution.junit.testDiscovery.JUnitTestDiscoveryConfigurationProducer" />
-        <option value="org.jetbrains.kotlin.idea.junit.KotlinJUnitRunConfigurationProducer" />
-        <option value="org.jetbrains.kotlin.idea.junit.KotlinPatternConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
@@ -1,45 +0,0 @@
-kotlin version: 2.0.21
-error message: Failed connecting to the daemon in 4 retries
-
-error message: Daemon compilation failed: Could not connect to Kotlin compile daemon
-java.lang.RuntimeException: Could not connect to Kotlin compile daemon
-	at org.jetbrains.kotlin.compilerRunner.GradleKotlinCompilerWork.compileWithDaemon(GradleKotlinCompilerWork.kt:214)
-	at org.jetbrains.kotlin.compilerRunner.GradleKotlinCompilerWork.compileWithDaemonOrFallbackImpl(GradleKotlinCompilerWork.kt:159)
-	at org.jetbrains.kotlin.compilerRunner.GradleKotlinCompilerWork.run(GradleKotlinCompilerWork.kt:111)
-	at org.jetbrains.kotlin.compilerRunner.GradleCompilerRunnerWithWorkers$GradleKotlinCompilerWorkAction.execute(GradleCompilerRunnerWithWorkers.kt:76)
-	at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:63)
-	at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:66)
-	at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:62)
-	at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:100)
-	at org.gradle.workers.internal.NoIsolationWorkerFactory$1.lambda$execute$0(NoIsolationWorkerFactory.java:62)
-	at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
-	at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
-	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:210)
-	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:205)
-	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:67)
-	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:60)
-	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:167)
-	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:60)
-	at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:54)
-	at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
-	at org.gradle.workers.internal.NoIsolationWorkerFactory$1.execute(NoIsolationWorkerFactory.java:59)
-	at org.gradle.workers.internal.DefaultWorkerExecutor.lambda$submitWork$0(DefaultWorkerExecutor.java:174)
-	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
-	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:194)
-	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.access$700(DefaultConditionalExecutionQueue.java:127)
-	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner$1.run(DefaultConditionalExecutionQueue.java:169)
-	at org.gradle.internal.Factories$1.create(Factories.java:31)
-	at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:263)
-	at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:127)
-	at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:132)
-	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:164)
-	at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:133)
-	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
-	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
-	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
-	at org.gradle.internal.concurrent.AbstractManagedExecutor$1.run(AbstractManagedExecutor.java:48)
-	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
-	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
-	at java.base/java.lang.Thread.run(Unknown Source)
-
-
@@ -0,0 +1,15 @@
+language: android
+sudo: true
+
+install:
+- echo y | android update sdk -u -a -t tools
+- echo y | android update sdk -u -a -t platform-tools
+- echo y | android update sdk -u -a -t build-tools-26.0.2
+- echo y | android update sdk -u -a -t android-25
+- echo y | android update sdk -u -a -t extra-google-m2repository
+- echo y | android update sdk -u -a -t extra-android-m2repository
+
+script: ./gradlew assembleRelease testReleaseUnitTest lintRelease
+
+after_failure:
+- cat app/build/reports/tests/debug/index.html
@@ -0,0 +1,10 @@
+[main]
+host = https://www.transifex.com
+
+[child-monitor.stringsxml]
+file_filter = app/src/main/res/values-<lang>/strings.xml
+minimum_perc = 0
+source_file = app/src/main/res/values/strings.xml
+source_lang = en
+type = ANDROID
+
@@ -0,0 +1,9 @@
+Branden Archer:
+   Initial concept and implementation
+Naofumi Fukue:
+   Added Japanese translation
+Enguerrand de Rochefort
+   Continuation of implementation
+
+Anybody who has contributed code to Child Monitor (or Protect Baby Monitor) is considered
+an author. Send pull requests to this project for additions to this file.
@@ -0,0 +1,81 @@
+How to Submit Patches to the Child Monitor Project
+===============================================================================
+https://github.com/enguerrand/child-monitor
+
+This document is intended to act as a guide to help you contribute to the
+Child Monitor project.  It is not perfect, and there will always be exceptions
+to the rules described here, but by following the instructions below you
+should have a much easier time getting your work merged with the upstream
+project.
+
+## Test Your Code
+
+There are four possible tests you can run to verify your code.  The first
+is unit tests, which check the basic functionality of the application, and
+can be run by gradle using:
+
+    # ./gradlew testReleaseUnitTest
+
+The second check for common problems uses static analysis.
+This is the Android lint checker, run using:
+
+    # ./gradlew lintRelease
+
+
+The final check is by testing the application on a live device and verifying
+the basic functionality works as expected.
+
+## Explain Your Work
+
+At the top of every patch you should include a description of the problem you
+are trying to solve, how you solved it, and why you chose the solution you
+implemented.  If you are submitting a bug fix, it is also incredibly helpful
+if you can describe/include a reproducer for the problem in the description as
+well as instructions on how to test for the bug and verify that it has been
+fixed.
+
+## Sign Your Work
+
+The sign-off is a simple line at the end of the patch description, which
+certifies that you wrote it or otherwise have the right to pass it on as an
+open-source patch.  The "Developer's Certificate of Origin" pledge is taken
+from the Linux Kernel and the rules are pretty simple:
+
+	Developer's Certificate of Origin 1.1
+
+	By making a contribution to this project, I certify that:
+
+	(a) The contribution was created in whole or in part by me and I
+	    have the right to submit it under the open source license
+	    indicated in the file; or
+
+	(b) The contribution is based upon previous work that, to the best
+	    of my knowledge, is covered under an appropriate open source
+	    license and I have the right under that license to submit that
+	    work with modifications, whether created in whole or in part
+	    by me, under the same open source license (unless I am
+	    permitted to submit under a different license), as indicated
+	    in the file; or
+
+	(c) The contribution was provided directly to me by some other
+	    person who certified (a), (b) or (c) and I have not modified
+	    it.
+
+	(d) I understand and agree that this project and the contribution
+	    are public and that a record of the contribution (including all
+	    personal information I submit with it, including my sign-off) is
+	    maintained indefinitely and may be redistributed consistent with
+	    this project or the open source license(s) involved.
+
+... then you just add a line to the bottom of your patch description, with
+your real name, saying:
+
+	Signed-off-by: Random J Developer <random@developer.example.org>
+
+## Submit Patch(es) for Review
+
+Finally, you will need to submit your patches so that they can be reviewed
+and potentially merged into the main Child Monitor repository. The preferred
+way to do this is to submit a Pull Request to the Child Monitor project.
+Changes need to apply cleanly onto the master branch and pass all
+unit tests and produce no errors during static analysis.
@@ -0,0 +1,675 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
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+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
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+know their rights.
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+  Developers that use the GNU GPL protect your rights with two steps:
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+giving you legal permission to copy, distribute and/or modify it.
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+  For the developers' and authors' protection, the GPL clearly explains
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+  Some devices are designed to deny users access to install or run
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+  You may convey verbatim copies of the Program's source code as you
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+
+  Nothing in this License shall be construed as excluding or limiting
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+
+  12. No Surrender of Others' Freedom.
+
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+
+  13. Use with the GNU Affero General Public License.
+
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+
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+be similar in spirit to the present version, but may differ in detail to
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+
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+
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+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
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+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
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+possible use to the public, the best way to achieve this is to make it
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+
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+
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+
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+    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/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    {project}  Copyright (C) {year}  {fullname}
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
@@ -0,0 +1,14 @@
+Sun Jan 3, 2016: Release 0.2
+
+  * Improve and simplify audio playback to reduce dropped
+    audio samples
+
+  * A parent device may pair with a child device by entering
+    the child's IP address and port.
+
+  * Japanese translation
+
+
+Mon Dec 28, 2015: Release 0.1
+
+ * Initial release
@@ -0,0 +1,29 @@
+# Child Monitor
+An Open Source Child Monitor for Android
+
+_Child Monitor_ allows two Android devices to act as a baby monitor. The first device,
+left in the room with the baby, will advertise itself on the network and stream audio
+to a connected client. The second device, with the parent, will connect to the monitoring
+device and receive an audio stream.
+
+The project is a fork of _Protect Baby Monitor_ which is declared as "on hiatus" by its developer.
+
+_Child Monitor_ works on Android 5.0 (Lollipop) and newer, i.e. Android SDK 21.
+
+The current version of _Child Monitor_ is rudimentary at best. It is capable
+of successfully advertising itself on the network, allows clients to connect,
+and streams audio. Room for improvement includes:
+
+1. Robust usage of the AudioTrack API
+2. Handle dropped packets gracefully
+3. Use of GSM when no internet connectivity is available
+
+At the time this project was forked from _Protect Baby Monitor_ there was no obvious open source solution for a
+baby monitor for Android in F-Droid.
+
+# License information
+_Child Monitor_ is licensed under the GPLv3. The Ulaw encoding / decoding code is licensed under the Apache License, Version 2.0 and taken from the Android Open Source Project.
+
+# Thanks
+Audio file originals from [freesound](https://freesound.org).
+This whole project originally created by [brarcher](https://github.com/brarcher/protect-baby-monitor).
@@ -1 +0,0 @@
-/build
@@ -0,0 +1,42 @@
+apply plugin: 'com.android.application'
+apply plugin: 'org.jetbrains.kotlin.android'
+
+android {
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "de.rochefort.childmonitor"
+        minSdkVersion 21
+        targetSdkVersion 34
+        versionCode 13
+        versionName "1.3"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+
+    dependencies {
+    }
+    namespace 'de.rochefort.childmonitor'
+    lint {
+        abortOnError true
+        warning 'MissingTranslation'
+    }
+    compileOptions {
+        // Sets Java compatibility to Java 21
+        sourceCompatibility JavaVersion.VERSION_21
+        targetCompatibility JavaVersion.VERSION_21
+    }
+    kotlin {
+        jvmToolchain(21)
+    }
+}
+
+dependencies {
+    implementation 'androidx.core:core:1.12.0'
+    implementation 'androidx.core:core-ktx:1.12.0'
+}
@@ -1,62 +0,0 @@
-plugins {
-    alias(libs.plugins.android.application)
-    alias(libs.plugins.kotlin.android)
-    alias(libs.plugins.kotlin.compose)
-}
-
-android {
-    namespace = "com.example.babyphone"
-    compileSdk {
-        version = release(36)
-    }
-
-    defaultConfig {
-        applicationId = "com.example.babyphone"
-        minSdk = 21
-        targetSdk = 36
-        versionCode = 1
-        versionName = "1.0"
-
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildTypes {
-        release {
-            isMinifyEnabled = false
-            proguardFiles(
-                getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
-            )
-        }
-    }
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
-    }
-    kotlinOptions {
-        jvmTarget = "11"
-    }
-    buildFeatures {
-        compose = true
-    }
-}
-
-dependencies {
-    implementation(libs.androidx.core.ktx)
-    implementation(libs.androidx.lifecycle.runtime.ktx)
-    implementation(libs.androidx.activity.compose)
-    implementation(platform(libs.androidx.compose.bom))
-    implementation(libs.androidx.compose.ui)
-    implementation(libs.androidx.compose.ui.graphics)
-    implementation(libs.androidx.compose.ui.tooling.preview)
-    implementation(libs.androidx.compose.material3)
-    testImplementation(libs.junit)
-    androidTestImplementation(libs.androidx.junit)
-    androidTestImplementation(libs.androidx.espresso.core)
-    androidTestImplementation(platform(libs.androidx.compose.bom))
-    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
-    debugImplementation(libs.androidx.compose.ui.tooling)
-    debugImplementation(libs.androidx.compose.ui.test.manifest)
-    implementation("androidx.appcompat:appcompat:1.6.1")
-
-}
@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile
@@ -1,24 +0,0 @@
-package com.example.babyphone
-
-import androidx.test.platform.app.InstrumentationRegistry
-import androidx.test.ext.junit.runners.AndroidJUnit4
-
-import org.junit.Test
-import org.junit.runner.RunWith
-
-import org.junit.Assert.*
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("com.example.babyphone", appContext.packageName)
-    }
-}
@@ -1,26 +1,69 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools">
-    <uses-permission android:name="android.permission.RECORD_AUDIO" />
-    <uses-permission android:name="android.permission.INTERNET" />
+    android:versionCode="2"
+    android:versionName="0.2">
+
+    <uses-permission
+        android:name="android.permission.ACCESS_NETWORK_STATE"
+        android:required="true" />
+    <uses-permission
+        android:name="android.permission.INTERNET"
+        android:required="true" />
+    <uses-permission
+        android:name="android.permission.RECORD_AUDIO"
+        android:required="true" />
+    <uses-permission
+        android:name="android.permission.ACCESS_WIFI_STATE"
+        android:required="true" />
+    <uses-permission
+        android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE"
+        android:required="true" />
+    <uses-permission
+        android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission
+        android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK"/>
+    <uses-permission
+        android:name="android.permission.FOREGROUND_SERVICE_MICROPHONE"/>
+
    <application
        android:allowBackup="true"
-        android:dataExtractionRules="@xml/data_extraction_rules"
-        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
-        android:supportsRtl="true"
-        android:theme="@style/AppTheme">
+        android:theme="@android:style/Theme.Holo">

-        <activity android:name=".MainActivity"
-            android:exported="true"
-            android:theme="@style/AppTheme">
+        <service
+            android:name=".ListenService"
+            android:enabled="true"
+            android:foregroundServiceType="mediaPlayback"
+            android:exported="false"/>
+        <service
+            android:name=".MonitorService"
+            android:enabled="true"
+            android:foregroundServiceType="microphone"
+            android:exported="false"/>
+
+        <activity
+            android:name=".StartActivity"
+            android:configChanges="orientation|screenSize"
+            android:exported="true">
            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
+        <activity
+            android:name=".MonitorActivity"
+            android:configChanges="orientation|screenSize"
+            android:parentActivityName=".StartActivity" />
+        <activity
+            android:name=".DiscoverActivity"
+            android:configChanges="orientation|screenSize"
+            android:parentActivityName=".StartActivity"
+            android:windowSoftInputMode="adjustPan" />
+        <activity
+            android:name=".ListenActivity"
+            android:configChanges="orientation|screenSize"
+            android:parentActivityName=".DiscoverActivity" />
    </application>
-
 </manifest>
@@ -1,253 +0,0 @@
-package com.example.babyphone;
-
-import android.Manifest;
-import android.content.pm.PackageManager;
-import android.media.AudioFormat;
-import android.media.AudioRecord;
-import android.media.MediaRecorder;
-import android.os.Build;
-import android.os.Bundle;
-import android.widget.Button;
-import android.widget.Toast;
-
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.net.ServerSocket;
-import java.net.Socket;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
-import android.widget.TextView;
-
-public class MainActivity extends AppCompatActivity {
-
-    private static final int SAMPLE_RATE = 8000;
-    private static final int PORT = 50005;
-    private boolean isStreaming = false;
-    private Thread recordingThread;
-    private Thread clientListenerThread;
-    private ServerSocket serverSocket;
-
-    private final List<Socket> clients = new ArrayList<>();
-
-    private String getLocalIpAddress() {
-        try {
-            for (java.util.Enumeration<java.net.NetworkInterface> en = java.net.NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
-                java.net.NetworkInterface intf = en.nextElement();
-                for (java.util.Enumeration<java.net.InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
-                    java.net.InetAddress inetAddress = enumIpAddr.nextElement();
-                    if (!inetAddress.isLoopbackAddress() && inetAddress instanceof java.net.Inet4Address) {
-                        return inetAddress.getHostAddress();
-                    }
-                }
-            }
-        } catch (Exception ex) {
-            ex.printStackTrace();
-        }
-        return "unbekannt";
-    }
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-
-        TextView ipAddressText = findViewById(R.id.ipAddressText);
-        String ip = getLocalIpAddress();
-        ipAddressText.setText("Sever(Kinder)-IP-Adresse: " + ip);
-
-        Button startStreamButton = findViewById(R.id.startStreamButton);
-
-        startStreamButton.setOnClickListener(v -> {
-            if (!isStreaming) {
-                if (checkPermissions()) {
-                    startStreaming();
-                    startStreamButton.setText("Stop Streaming");
-                }
-            } else {
-                stopStreaming();
-                startStreamButton.setText("Start Streaming");
-            }
-        });
-    }
-
-    private boolean checkPermissions() {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-            if (checkSelfPermission(Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
-                ActivityCompat.requestPermissions(this,
-                        new String[]{Manifest.permission.RECORD_AUDIO}, 1);
-                return false;
-            }
-        }
-        return true;
-    }
-
-    private void startStreaming() {
-        isStreaming = true;
-
-        try {
-            serverSocket = new ServerSocket(PORT);
-            showToast("Server gestartet auf Port " + PORT);
-        } catch (IOException e) {
-            showToast("Fehler beim Start des Servers: " + e.getMessage());
-            return;
-        }
-
-        // Thread: Neue Clients annehmen
-        clientListenerThread = new Thread(() -> {
-            while (isStreaming) {
-                try {
-                    Socket client = serverSocket.accept();
-                    synchronized (clients) {
-                        clients.add(client);
-                    }
-                    showToast("Neuer Client: " + client.getInetAddress());
-                } catch (IOException e) {
-                    if (isStreaming) {
-                        showToast("Fehler beim Client-Connect: " + e.getMessage());
-                    }
-                }
-            }
-        });
-        clientListenerThread.start();
-
-        // Thread: Audio aufnehmen und an alle Clients senden (mit µ-law)
-// Thread: Audio aufnehmen und an alle Clients senden (µ-Law, 8kHz)
-        recordingThread = new Thread(() -> {
-            int minBufferSize = AudioRecord.getMinBufferSize(8000, // neue Sample-Rate
-                    AudioFormat.CHANNEL_IN_MONO,
-                    AudioFormat.ENCODING_PCM_16BIT);
-
-            if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
-                    != PackageManager.PERMISSION_GRANTED) {
-                ActivityCompat.requestPermissions(this,
-                        new String[]{Manifest.permission.RECORD_AUDIO},
-                        1001);
-                return;
-            }
-
-            AudioRecord recorder = null;
-            try {
-                recorder = new AudioRecord(
-                        MediaRecorder.AudioSource.MIC,
-                        44100, // Aufnahme weiterhin mit nativer Rate
-                        AudioFormat.CHANNEL_IN_MONO,
-                        AudioFormat.ENCODING_PCM_16BIT,
-                        minBufferSize
-                );
-            } catch (SecurityException e) {
-                e.printStackTrace();
-                return;
-            }
-
-            byte[] pcmBuffer = new byte[minBufferSize];
-            recorder.startRecording();
-
-            // Buffer für Resampling
-            short[] pcmSamples = new short[minBufferSize / 2];
-
-            while (isStreaming) {
-                int read = recorder.read(pcmBuffer, 0, pcmBuffer.length);
-                if (read > 0) {
-                    // PCM Byte-Array → short[]
-                    ByteBuffer.wrap(pcmBuffer, 0, read).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().get(pcmSamples, 0, read / 2);
-
-                    // Resample 44.1kHz -> 8kHz (einfaches Downsampling, z.B. jede 5.5. Probe nehmen)
-                    short[] downsampled = new short[(int) (pcmSamples.length * 8000f / 44100f)];
-                    for (int i = 0; i < downsampled.length; i++) {
-                        downsampled[i] = pcmSamples[(int) (i * 44100f / 8000f)];
-                    }
-
-                    // PCM → µ-Law
-                    byte[] muLawData = new byte[downsampled.length];
-                    for (int i = 0; i < downsampled.length; i++) {
-                        muLawData[i] = linearToMuLawSample(downsampled[i]);
-                    }
-
-                    // Senden an alle Clients
-                    synchronized (clients) {
-                        Iterator<Socket> iterator = clients.iterator();
-                        while (iterator.hasNext()) {
-                            Socket client = iterator.next();
-                            try {
-                                OutputStream out = client.getOutputStream();
-                                out.write(muLawData);
-                            } catch (IOException e) {
-                                try { client.close(); } catch (IOException ignored) {}
-                                iterator.remove();
-                                showToast("Client getrennt");
-                            }
-                        }
-                    }
-                }
-            }
-
-            recorder.stop();
-            recorder.release();
-        });
-
-
-        recordingThread.start();
-    }
-
-    private void stopStreaming() {
-        isStreaming = false;
-
-        // Schließe alle Clients
-        synchronized (clients) {
-            for (Socket client : clients) {
-                try {
-                    client.close();
-                } catch (IOException ignored) {}
-            }
-            clients.clear();
-        }
-
-        // Server stoppen
-        try {
-            if (serverSocket != null) {
-                serverSocket.close();
-            }
-        } catch (IOException ignored) {}
-
-        showToast("Streaming gestoppt");
-    }
-
-    private void showToast(String msg) {
-        runOnUiThread(() -> Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show());
-    }
-
-    // ========================
-    // PCM16 → µ-Law Umwandlung
-    // ========================
-    private static byte linearToMuLawSample(short sample) {
-        final int MU = 255;
-        int sign = (sample >> 8) & 0x80;
-        if (sign != 0) sample = (short) -sample;
-        if (sample > 32635) sample = 32635;
-        sample = (short) (sample + 132);
-        int exponent = 7;
-        for (int expMask = 0x4000; (sample & expMask) == 0 && exponent > 0; exponent--, expMask >>= 1) {}
-        int mantissa = (sample >> ((exponent == 0) ? 4 : (exponent + 3))) & 0x0F;
-        int muLawByte = ~(sign | (exponent << 4) | mantissa);
-        return (byte) muLawByte;
-    }
-
-    private static byte[] pcm16ToMuLaw(byte[] pcmData, int length) {
-        ByteArrayOutputStream baos = new ByteArrayOutputStream(length / 2);
-        ByteBuffer bb = ByteBuffer.wrap(pcmData, 0, length).order(ByteOrder.LITTLE_ENDIAN);
-        while (bb.remaining() > 1) {
-            short sample = bb.getShort();
-            baos.write(linearToMuLawSample(sample));
-        }
-        return baos.toByteArray();
-    }
-}
@@ -1,11 +0,0 @@
-package com.example.babyphone.ui.theme
-
-import androidx.compose.ui.graphics.Color
-
-val Purple80 = Color(0xFFD0BCFF)
-val PurpleGrey80 = Color(0xFFCCC2DC)
-val Pink80 = Color(0xFFEFB8C8)
-
-val Purple40 = Color(0xFF6650a4)
-val PurpleGrey40 = Color(0xFF625b71)
-val Pink40 = Color(0xFF7D5260)
@@ -1,58 +0,0 @@
-package com.example.babyphone.ui.theme
-
-import android.app.Activity
-import android.os.Build
-import androidx.compose.foundation.isSystemInDarkTheme
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.darkColorScheme
-import androidx.compose.material3.dynamicDarkColorScheme
-import androidx.compose.material3.dynamicLightColorScheme
-import androidx.compose.material3.lightColorScheme
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.platform.LocalContext
-
-private val DarkColorScheme = darkColorScheme(
-    primary = Purple80,
-    secondary = PurpleGrey80,
-    tertiary = Pink80
-)
-
-private val LightColorScheme = lightColorScheme(
-    primary = Purple40,
-    secondary = PurpleGrey40,
-    tertiary = Pink40
-
-    /* Other default colors to override
-    background = Color(0xFFFFFBFE),
-    surface = Color(0xFFFFFBFE),
-    onPrimary = Color.White,
-    onSecondary = Color.White,
-    onTertiary = Color.White,
-    onBackground = Color(0xFF1C1B1F),
-    onSurface = Color(0xFF1C1B1F),
-    */
-)
-
-@Composable
-fun BabyphoneTheme(
-    darkTheme: Boolean = isSystemInDarkTheme(),
-    // Dynamic color is available on Android 12+
-    dynamicColor: Boolean = true,
-    content: @Composable () -> Unit
-) {
-    val colorScheme = when {
-        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
-            val context = LocalContext.current
-            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
-        }
-
-        darkTheme -> DarkColorScheme
-        else -> LightColorScheme
-    }
-
-    MaterialTheme(
-        colorScheme = colorScheme,
-        typography = Typography,
-        content = content
-    )
-}
@@ -1,34 +0,0 @@
-package com.example.babyphone.ui.theme
-
-import androidx.compose.material3.Typography
-import androidx.compose.ui.text.TextStyle
-import androidx.compose.ui.text.font.FontFamily
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.sp
-
-// Set of Material typography styles to start with
-val Typography = Typography(
-    bodyLarge = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.Normal,
-        fontSize = 16.sp,
-        lineHeight = 24.sp,
-        letterSpacing = 0.5.sp
-    )
-    /* Other default text styles to override
-    titleLarge = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.Normal,
-        fontSize = 22.sp,
-        lineHeight = 28.sp,
-        letterSpacing = 0.sp
-    ),
-    labelSmall = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.Medium,
-        fontSize = 11.sp,
-        lineHeight = 16.sp,
-        letterSpacing = 0.5.sp
-    )
-    */
-)
@@ -0,0 +1,28 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.media.AudioFormat
+import de.rochefort.childmonitor.audio.G711UCodec
+
+object AudioCodecDefines {
+    const val FREQUENCY = 8000
+    const val ENCODING = AudioFormat.ENCODING_PCM_16BIT
+    val CODEC = G711UCodec()
+    const val CHANNEL_CONFIGURATION_IN = AudioFormat.CHANNEL_IN_MONO
+    const val CHANNEL_CONFIGURATION_OUT = AudioFormat.CHANNEL_OUT_MONO
+}
@@ -0,0 +1,235 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.app.Activity
+import android.content.Intent
+import android.net.nsd.NsdManager
+import android.net.nsd.NsdManager.DiscoveryListener
+import android.net.nsd.NsdServiceInfo
+import android.net.wifi.WifiManager
+import android.os.Bundle
+import android.util.Log
+import android.view.View
+import android.widget.AdapterView
+import android.widget.AdapterView.OnItemClickListener
+import android.widget.ArrayAdapter
+import android.widget.Button
+import android.widget.EditText
+import android.widget.ListView
+import android.widget.Toast
+
+class DiscoverActivity : Activity() {
+    private lateinit var nsdManager: NsdManager
+    private var discoveryListener: DiscoveryListener? = null
+    override fun onCreate(savedInstanceState: Bundle?) {
+        Log.i(TAG, "ChildMonitor start")
+        this.nsdManager = this.getSystemService(NSD_SERVICE) as NsdManager
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_discover)
+        val discoverChildButton = findViewById<Button>(R.id.discoverChildButton)
+        discoverChildButton.setOnClickListener { _: View? -> loadDiscoveryViaMdns() }
+        val enterChildAddressButton = findViewById<Button>(R.id.enterChildAddressButton)
+        enterChildAddressButton.setOnClickListener { _: View? -> loadDiscoveryViaAddress() }
+    }
+
+    private fun loadDiscoveryViaMdns() {
+        setContentView(R.layout.activity_discover_mdns)
+        startServiceDiscovery("_childmonitor._tcp.")
+    }
+
+    private fun loadDiscoveryViaAddress() {
+        setContentView(R.layout.activity_discover_address)
+        val connectButton = findViewById<Button>(R.id.connectViaAddressButton)
+        val addressField = findViewById<EditText>(R.id.ipAddressField)
+        val portField = findViewById<EditText>(R.id.portField)
+        val preferredAddress = getPreferences(MODE_PRIVATE).getString(PREF_KEY_CHILD_DEVICE_ADDRESS, null)
+        if (!preferredAddress.isNullOrEmpty()) {
+            addressField.setText(preferredAddress)
+        }
+        val preferredPort = getPreferences(MODE_PRIVATE).getInt(PREF_KEY_CHILD_DEVICE_PORT, -1)
+        if (preferredPort > 0) {
+            portField.setText(preferredPort.toString())
+        } else {
+            portField.setText("10000")
+        }
+        connectButton.setOnClickListener { _: View? ->
+            Log.i(TAG, "Connecting to child device via address")
+            val addressString = addressField.text.toString()
+            val portString = portField.text.toString()
+            if (addressString.isEmpty()) {
+                Toast.makeText(this@DiscoverActivity, R.string.invalidAddress, Toast.LENGTH_LONG).show()
+                return@setOnClickListener
+            }
+            val port: Int = try {
+                portString.toInt()
+            } catch (e: NumberFormatException) {
+                Toast.makeText(this@DiscoverActivity, R.string.invalidPort, Toast.LENGTH_LONG).show()
+                return@setOnClickListener
+            }
+            val preferencesEditor = getPreferences(MODE_PRIVATE).edit()
+            preferencesEditor.putString(PREF_KEY_CHILD_DEVICE_ADDRESS, addressString)
+            preferencesEditor.putInt(PREF_KEY_CHILD_DEVICE_PORT, port)
+            preferencesEditor.apply()
+            connectToChild(addressString, port, addressString)
+        }
+    }
+
+    override fun onDestroy() {
+        Log.i(TAG, "ChildMonitoring stop")
+        this.discoveryListener?.let {
+            this.discoveryListener = null
+            Log.i(TAG, "Unregistering monitoring service")
+            this.nsdManager.stopServiceDiscovery(it)
+        }
+        super.onDestroy()
+    }
+
+    private fun startServiceDiscovery(serviceType: String) {
+        val nsdManager = this.getSystemService(NSD_SERVICE) as NsdManager
+        val wifi = this.applicationContext.getSystemService(WIFI_SERVICE) as WifiManager
+        val multicastLock = wifi.createMulticastLock("multicastLock")
+        multicastLock.setReferenceCounted(true)
+        multicastLock.acquire()
+        val multicastReleaser = {
+            try {
+                multicastLock.release()
+            } catch (ignored: Exception) {
+                // don't really care
+            }
+        }
+        val serviceTable = findViewById<ListView>(R.id.ServiceTable)
+        val availableServicesAdapter = ArrayAdapter<ServiceInfoWrapper>(this,
+                R.layout.available_children_list)
+        serviceTable.adapter = availableServicesAdapter
+        serviceTable.onItemClickListener = OnItemClickListener { parent: AdapterView<*>, _: View?, position: Int, _: Long ->
+            val info = parent.getItemAtPosition(position) as ServiceInfoWrapper
+            info.address?.let {
+                connectToChild(it, info.port, info.name)
+            }
+        }
+
+        // Instantiate a new DiscoveryListener
+        this.discoveryListener = object : DiscoveryListener {
+            //  Called as soon as service discovery begins.
+            override fun onDiscoveryStarted(regType: String) {
+                Log.d(TAG, "Service discovery started")
+            }
+
+            override fun onServiceFound(service: NsdServiceInfo) {
+                // A service was found!  Do something with it.
+                Log.d(TAG, "Service discovery success: $service")
+                if (service.serviceType != serviceType) {
+                    // Service type is the string containing the protocol and
+                    // transport layer for this service.
+                    Log.d(TAG, "Unknown Service Type: " + service.serviceType)
+                } else if (service.serviceName.contains("ChildMonitor")) {
+                    val resolver: NsdManager.ResolveListener = object : NsdManager.ResolveListener {
+                        override fun onResolveFailed(serviceInfo: NsdServiceInfo, errorCode: Int) {
+                            // Called when the resolve fails.  Use the error code to debug.
+                            Log.e(TAG, "Resolve failed: error $errorCode for service: $serviceInfo")
+                        }
+
+                        override fun onServiceResolved(serviceInfo: NsdServiceInfo) {
+                            Log.i(TAG, "Resolve Succeeded: $serviceInfo")
+                            runOnUiThread {
+                                for (index in 0 until availableServicesAdapter.count) {
+                                    val item = availableServicesAdapter.getItem(index)
+                                    if (item != null && item.matches(serviceInfo)) {
+                                        // Prevent inserting duplicates
+                                        return@runOnUiThread
+                                    }
+                                }
+                                availableServicesAdapter.add(ServiceInfoWrapper(serviceInfo))
+                            }
+                        }
+                    }
+                    this@DiscoverActivity.nsdManager.resolveService(service, resolver)
+                } else {
+                    Log.d(TAG, "Unknown Service name: " + service.serviceName)
+                }
+            }
+
+            override fun onServiceLost(service: NsdServiceInfo) {
+                // When the network service is no longer available.
+                // Internal bookkeeping code goes here.
+                Log.e(TAG, "Service lost: $service")
+                multicastReleaser()
+            }
+
+            override fun onDiscoveryStopped(serviceType: String) {
+                Log.i(TAG, "Discovery stopped: $serviceType")
+                multicastReleaser()
+            }
+
+            override fun onStartDiscoveryFailed(serviceType: String, errorCode: Int) {
+                Log.e(TAG, "Discovery failed: Error code: $errorCode")
+                nsdManager.stopServiceDiscovery(this)
+                multicastReleaser()
+            }
+
+            override fun onStopDiscoveryFailed(serviceType: String, errorCode: Int) {
+                Log.e(TAG, "Discovery failed: Error code: $errorCode")
+                nsdManager.stopServiceDiscovery(this)
+                multicastReleaser()
+            }
+        }
+        nsdManager.discoverServices(
+                serviceType, NsdManager.PROTOCOL_DNS_SD, discoveryListener
+        )
+    }
+
+    private fun connectToChild(address: String, port: Int, name: String) {
+        val i = Intent(applicationContext, ListenActivity::class.java)
+        val b = Bundle()
+        b.putString("address", address)
+        b.putInt("port", port)
+        b.putString("name", name)
+        i.putExtras(b)
+        startActivity(i)
+    }
+
+    companion object {
+        private const val TAG = "ChildMonitor"
+        private const val PREF_KEY_CHILD_DEVICE_ADDRESS = "childDeviceAddress"
+        private const val PREF_KEY_CHILD_DEVICE_PORT = "childDevicePort"
+    }
+}
+
+internal class ServiceInfoWrapper(private val info: NsdServiceInfo) {
+    fun matches(other: NsdServiceInfo): Boolean {
+        return info.host == other.host && info.port == other.port
+    }
+
+    val address: String?
+        get() = info.host.hostAddress
+    val port: Int
+        get() = info.port
+    // If there is more than one service with the same name on the network, it will
+    // have a number at the end, but will appear as the following:
+    //   "ChildMonitor\\032(number)
+    // or
+    //   "ChildMonitor\032(number)
+    // Replace \\032 and \032 with a " "
+    val name: String = info.serviceName
+        .replace("\\\\032", " ")
+        .replace("\\032", " ")
+
+    override fun toString(): String {
+        return name
+    }
+}
@@ -0,0 +1,122 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.app.Activity
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import android.content.ServiceConnection
+import android.media.AudioManager
+import android.os.Bundle
+import android.os.IBinder
+import android.util.Log
+import android.widget.TextView
+import android.widget.Toast
+import androidx.core.content.ContextCompat
+import de.rochefort.childmonitor.ListenService.ListenBinder
+
+class ListenActivity : Activity() {
+    // Don't attempt to unbind from the service unless the client has received some
+    // information about the service's state.
+    private var shouldUnbind = false
+    private val connection: ServiceConnection = object : ServiceConnection {
+        override fun onServiceConnected(className: ComponentName, service: IBinder) {
+            // This is called when the connection with the service has been
+            // established, giving us the service object we can use to
+            // interact with the service.  Because we have bound to a explicit
+            // service that we know is running in our own process, we can
+            // cast its IBinder to a concrete class and directly access it.
+            val bs = (service as ListenBinder).service
+            Toast.makeText(this@ListenActivity, R.string.connect,
+                    Toast.LENGTH_SHORT).show()
+            val connectedText = findViewById<TextView>(R.id.connectedTo)
+            connectedText.text = bs.childDeviceName
+            val volumeView = findViewById<VolumeView>(R.id.volume)
+            volumeView.volumeHistory = bs.volumeHistory
+            bs.onUpdate = { volumeView.postInvalidate() }
+            bs.onError = { postErrorMessage() }
+        }
+
+        override fun onServiceDisconnected(className: ComponentName) {
+            // This is called when the connection with the service has been
+            // unexpectedly disconnected -- that is, its process crashed.
+            // Because it is running in our same process, we should never
+            // see this happen.
+            Toast.makeText(this@ListenActivity, R.string.disconnected,
+                    Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    private fun ensureServiceRunningAndBind(bundle: Bundle?) {
+        val context: Context = this
+        val intent = Intent(context, ListenService::class.java)
+        bundle?.let {
+            intent.putExtra("name", it.getString("name"))
+            intent.putExtra("address", it.getString("address"))
+            intent.putExtra("port", it.getInt("port"))
+            ContextCompat.startForegroundService(context, intent)
+        }
+        // Attempts to establish a connection with the service.  We use an
+        // explicit class name because we want a specific service
+        // implementation that we know will be running in our own process
+        // (and thus won't be supporting component replacement by other
+        // applications).
+        if (bindService(intent, connection, BIND_AUTO_CREATE)) {
+            this.shouldUnbind = true
+            Log.i(TAG, "Bound listen service")
+        } else {
+            Log.e(TAG, "Error: The requested service doesn't " +
+                    "exist, or this client isn't allowed access to it.")
+        }
+    }
+
+    private fun doUnbindAndStopService() {
+        if (this.shouldUnbind) {
+            // Release information about the service's state.
+            unbindService(connection)
+            this.shouldUnbind = false
+        }
+        val context: Context = this
+        val intent = Intent(context, ListenService::class.java)
+        context.stopService(intent)
+    }
+
+    fun postErrorMessage() {
+        val status = findViewById<TextView>(R.id.textStatus)
+        status.post { status.setText(R.string.disconnected) }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val bundle = this.intent.extras
+        ensureServiceRunningAndBind(bundle)
+        this.volumeControlStream = AudioManager.STREAM_MUSIC
+        setContentView(R.layout.activity_listen)
+        val statusText = findViewById<TextView>(R.id.textStatus)
+        statusText.setText(R.string.listening)
+    }
+
+    public override fun onDestroy() {
+        doUnbindAndStopService()
+        super.onDestroy()
+    }
+
+    companion object {
+        private const val TAG = "ListenActivity"
+    }
+}
@@ -0,0 +1,210 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Intent
+import android.content.pm.ServiceInfo
+import android.media.AudioManager
+import android.media.AudioTrack
+import android.media.MediaPlayer
+import android.os.Binder
+import android.os.Build
+import android.os.IBinder
+import android.util.Log
+import android.widget.Toast
+import androidx.core.app.NotificationCompat
+import androidx.core.app.ServiceCompat
+import java.io.IOException
+import java.net.Socket
+
+class ListenService : Service() {
+    private val frequency: Int = AudioCodecDefines.FREQUENCY
+    private val channelConfiguration: Int = AudioCodecDefines.CHANNEL_CONFIGURATION_OUT
+    private val audioEncoding: Int = AudioCodecDefines.ENCODING
+    private val bufferSize = AudioTrack.getMinBufferSize(frequency, channelConfiguration, audioEncoding)
+    private val byteBufferSize = bufferSize * 2
+    private val binder: IBinder = ListenBinder()
+    private lateinit var notificationManager: NotificationManager
+    private var listenThread: Thread? = null
+    val volumeHistory = VolumeHistory(16384)
+    var childDeviceName: String? = null
+        private set
+
+    override fun onCreate() {
+        super.onCreate()
+        this.notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+    }
+
+    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
+        Log.i(TAG, "Received start id $startId: $intent")
+        // Display a notification about us starting.  We put an icon in the status bar.
+        createNotificationChannel()
+        intent.extras?.let {
+            val name = it.getString("name")
+            childDeviceName = name
+            val n = buildNotification(name)
+            val foregroundServiceType = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK else 0 // Keep the linter happy
+            ServiceCompat.startForeground(this, ID, n, foregroundServiceType)
+            val address = it.getString("address")
+            val port = it.getInt("port")
+            doListen(address, port)
+        }
+        return START_REDELIVER_INTENT
+    }
+
+    override fun onDestroy() {
+        this.listenThread?.interrupt()
+        this.listenThread = null
+
+        // Cancel the persistent notification.
+        notificationManager.cancel(R.string.listening)
+        ServiceCompat.stopForeground(this, ServiceCompat.STOP_FOREGROUND_REMOVE)
+        // Tell the user we stopped.
+        Toast.makeText(this, R.string.stopped, Toast.LENGTH_SHORT).show()
+    }
+
+    override fun onBind(intent: Intent): IBinder {
+        return binder
+    }
+
+    private fun buildNotification(name: String?): Notification {
+        // In this sample, we'll use the same text for the ticker and the expanded notification
+        val text = getText(R.string.listening)
+
+        // The PendingIntent to launch our activity if the user selects this notification
+        val contentIntent = PendingIntent.getActivity(this, 0,
+                Intent(this, ListenActivity::class.java), PendingIntent.FLAG_IMMUTABLE)
+
+        // Set the info for the views that show in the notification panel.
+        val b = NotificationCompat.Builder(this, CHANNEL_ID)
+        b.setSmallIcon(R.drawable.listening_notification) // the status icon
+                .setOngoing(true)
+                .setTicker(text) // the status text
+                .setContentTitle(text) // the label of the entry
+                .setContentText(name) // the contents of the entry
+                .setContentIntent(contentIntent)
+        return b.build()
+    }
+
+    private fun createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val serviceChannel = NotificationChannel(
+                    CHANNEL_ID,
+                    "Foreground Service Channel",
+                    NotificationManager.IMPORTANCE_DEFAULT
+            )
+            notificationManager.createNotificationChannel(serviceChannel)
+        }
+    }
+
+    inner class ListenBinder : Binder() {
+        val service: ListenService
+            get() = this@ListenService
+    }
+
+    var onError: (() -> Unit)? = null
+    var onUpdate: (() -> Unit)? = null
+    private fun doListen(address: String?, port: Int) {
+        val lt = Thread {
+            try {
+                val socket = Socket(address, port)
+                socket.soTimeout = 30_000
+                val success = streamAudio(socket)
+                if (!success) {
+                    playAlert()
+                    onError?.invoke()
+                }
+            } catch (e : IOException) {
+                Log.e(TAG, "Error opening socket to $address on port $port", e)
+            }
+        }
+        this.listenThread = lt
+        lt.start()
+    }
+
+    private fun streamAudio(socket: Socket): Boolean {
+        Log.i(TAG, "Setting up stream")
+        val audioTrack = AudioTrack(AudioManager.STREAM_MUSIC,
+            frequency,
+            channelConfiguration,
+            audioEncoding,
+            bufferSize,
+            AudioTrack.MODE_STREAM)
+        try {
+            audioTrack.play()
+        } catch (e : java.lang.IllegalStateException) {
+            Log.e(TAG, "Failed to play streamed audio audio for other reason", e)
+            return false
+        }
+
+        val inputStream = try {
+            socket.getInputStream()
+        } catch (e: IOException) {
+            Log.e(TAG, "Failed to read audio audio for socket", e)
+            return false
+        }
+
+        val readBuffer = ByteArray(byteBufferSize)
+        val decodedBuffer = ShortArray(byteBufferSize * 2)
+        try {
+            while (!Thread.currentThread().isInterrupted) {
+                val len = inputStream.read(readBuffer)
+                if (len < 0) {
+                    // If the current thread was not interrupted this means the remote stopped streaming
+                    return Thread.currentThread().isInterrupted
+                }
+                val decoded: Int = AudioCodecDefines.CODEC.decode(decodedBuffer, readBuffer, len, 0)
+                if (decoded > 0) {
+                    audioTrack.write(decodedBuffer, 0, decoded)
+                    val decodedBytes = ShortArray(decoded)
+                    System.arraycopy(decodedBuffer, 0, decodedBytes, 0, decoded)
+                    volumeHistory.onAudioData(decodedBytes)
+                    onUpdate?.invoke()
+                }
+            }
+            return true
+        } catch (e: Exception) {
+            Log.e(TAG, "Connection failed", e)
+            return false
+        } finally {
+            audioTrack.stop()
+            socket.close()
+        }
+    }
+
+    private fun playAlert() {
+        val mp = MediaPlayer.create(this, R.raw.upward_beep_chromatic_fifths)
+        if (mp != null) {
+            Log.i(TAG, "Playing alert")
+            mp.setOnCompletionListener { obj: MediaPlayer -> obj.release() }
+            mp.start()
+        } else {
+            Log.e(TAG, "Failed to play alert")
+        }
+    }
+
+    companion object {
+        private const val TAG = "ListenService"
+        const val CHANNEL_ID = TAG
+        const val ID = 902938409
+    }
+}
@@ -0,0 +1,135 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.app.Activity
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import android.content.ServiceConnection
+import android.net.ConnectivityManager
+import android.os.Bundle
+import android.os.IBinder
+import android.util.Log
+import android.widget.TextView
+import android.widget.Toast
+import androidx.core.content.ContextCompat
+import de.rochefort.childmonitor.MonitorService.MonitorBinder
+
+class MonitorActivity : Activity() {
+    private val connection: ServiceConnection = object : ServiceConnection {
+        override fun onServiceConnected(className: ComponentName, service: IBinder) {
+            // This is called when the connection with the service has been
+            // established, giving us the service object we can use to
+            // interact with the service. Because we have bound to an explicit
+            // service that we know is running in our own process, we can
+            // cast its IBinder to a concrete class and directly access it.
+            val bs = (service as MonitorBinder).service
+            bs.monitorActivity = this@MonitorActivity
+        }
+
+        override fun onServiceDisconnected(className: ComponentName) {
+            // This is called when the connection with the service has been
+            // unexpectedly disconnected -- that is, its process crashed.
+            // Because it is running in our same process, we should never
+            // see this happen.
+            Toast.makeText(this@MonitorActivity, R.string.disconnected,
+                    Toast.LENGTH_SHORT).show()
+        }
+    }
+    private var shouldUnbind = false
+    override fun onCreate(savedInstanceState: Bundle?) {
+        Log.i(TAG, "ChildMonitor start")
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_monitor)
+        val addressText = findViewById<TextView>(R.id.address)
+        val listenAddresses = listenAddresses
+        if (listenAddresses.isNotEmpty()) {
+            val sb = StringBuilder()
+            for (i in listenAddresses.indices) {
+                val listenAddress = listenAddresses[i]
+                sb.append(listenAddress)
+                if (i != listenAddresses.size - 1) {
+                    sb.append("\n\n")
+                }
+            }
+            addressText.text = sb.toString()
+        } else {
+            addressText.setText(R.string.notConnected)
+        }
+        ensureServiceRunningAndBind()
+    }
+
+    private val listenAddresses: List<String>
+        get() {
+            val cm = getSystemService(CONNECTIVITY_SERVICE) as ConnectivityManager
+            val listenAddresses: MutableList<String> = ArrayList()
+            for (network in cm.allNetworks) {
+                val networkInfo = cm.getNetworkInfo(network)
+                val connected = networkInfo!!.isConnected
+                if (connected) {
+                    val linkAddresses = cm.getLinkProperties(network)!!.linkAddresses
+                    for (linkAddress in linkAddresses) {
+                        val address = linkAddress.address
+                        val hostAddress = address.hostAddress
+                        if (!address.isLinkLocalAddress && !address.isLoopbackAddress && hostAddress != null) {
+                            listenAddresses.add(hostAddress + " (" + networkInfo.typeName + ")")
+                        }
+                    }
+                }
+            }
+            return listenAddresses
+        }
+
+    public override fun onDestroy() {
+        doUnbindAndStopService()
+        super.onDestroy()
+    }
+
+    private fun ensureServiceRunningAndBind() {
+        val context: Context = this
+        val intent = Intent(context, MonitorService::class.java)
+        ContextCompat.startForegroundService(context, intent)
+        // Attempts to establish a connection with the service.  We use an
+        // explicit class name because we want a specific service
+        // implementation that we know will be running in our own process
+        // (and thus won't be supporting component replacement by other
+        // applications).
+        if (bindService(intent, connection, BIND_AUTO_CREATE)) {
+            this.shouldUnbind = true
+            Log.i(TAG, "Bound monitor service")
+        } else {
+            Log.e(TAG, "Error: The requested service doesn't " +
+                    "exist, or this client isn't allowed access to it.")
+        }
+    }
+
+    private fun doUnbindAndStopService() {
+        if (this.shouldUnbind) {
+            this.shouldUnbind = false
+            // Release information about the service's state.
+            unbindService(connection)
+        }
+        val context: Context = this
+        val intent = Intent(context, MonitorService::class.java)
+        context.stopService(intent)
+    }
+
+    companion object {
+        const val TAG = "ChildMonitor"
+    }
+}
@@ -0,0 +1,269 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Intent
+import android.content.pm.ServiceInfo
+import android.media.AudioRecord
+import android.media.MediaRecorder
+import android.net.nsd.NsdManager
+import android.net.nsd.NsdManager.RegistrationListener
+import android.net.nsd.NsdServiceInfo
+import android.os.Binder
+import android.os.Build
+import android.os.IBinder
+import android.util.Log
+import android.widget.TextView
+import android.widget.Toast
+import androidx.core.app.NotificationCompat
+import androidx.core.app.ServiceCompat
+import java.io.IOException
+import java.net.ServerSocket
+import java.net.Socket
+
+class MonitorService : Service() {
+    private val binder: IBinder = MonitorBinder()
+    private lateinit var nsdManager: NsdManager
+    private var registrationListener: RegistrationListener? = null
+    private var currentSocket: ServerSocket? = null
+    private var connectionToken: Any? = null
+    private var currentPort = 0
+    private lateinit var notificationManager: NotificationManager
+    private var monitorThread: Thread? = null
+    var monitorActivity: MonitorActivity? = null
+
+    private fun serviceConnection(socket: Socket) {
+        val ma = this.monitorActivity
+        ma?.runOnUiThread {
+            val statusText = ma.findViewById<TextView>(R.id.textStatus)
+            statusText.setText(R.string.streaming)
+        }
+        val frequency: Int = AudioCodecDefines.FREQUENCY
+        val channelConfiguration: Int = AudioCodecDefines.CHANNEL_CONFIGURATION_IN
+        val audioEncoding: Int = AudioCodecDefines.ENCODING
+        val bufferSize = AudioRecord.getMinBufferSize(frequency, channelConfiguration, audioEncoding)
+        val audioRecord: AudioRecord = try {
+            AudioRecord(
+                    MediaRecorder.AudioSource.MIC,
+                    frequency,
+                    channelConfiguration,
+                    audioEncoding,
+                    bufferSize
+            )
+        } catch (e: SecurityException) {
+            // This should never happen, we asked for permission before
+            throw RuntimeException(e)
+        }
+        val pcmBufferSize = bufferSize * 2
+        val pcmBuffer = ShortArray(pcmBufferSize)
+        val ulawBuffer = ByteArray(pcmBufferSize)
+        try {
+            audioRecord.startRecording()
+            val out = socket.getOutputStream()
+            socket.sendBufferSize = pcmBufferSize
+            Log.d(TAG, "Socket send buffer size: " + socket.sendBufferSize)
+            while (socket.isConnected && (this.currentSocket != null) && !Thread.currentThread().isInterrupted) {
+                val read = audioRecord.read(pcmBuffer, 0, bufferSize)
+                val encoded: Int = AudioCodecDefines.CODEC.encode(pcmBuffer, read, ulawBuffer, 0)
+                out.write(ulawBuffer, 0, encoded)
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Connection failed", e)
+        } finally {
+            audioRecord.stop()
+        }
+    }
+
+    override fun onCreate() {
+        Log.i(TAG, "ChildMonitor start")
+        super.onCreate()
+        this.notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+        this.nsdManager = this.getSystemService(NSD_SERVICE) as NsdManager
+        this.currentPort = 10000
+        this.currentSocket = null
+    }
+
+    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
+        Log.i(TAG, "Received start id $startId: $intent")
+        // Display a notification about us starting.  We put an icon in the status bar.
+        createNotificationChannel()
+        val n = buildNotification()
+        val foregroundServiceType = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) ServiceInfo.FOREGROUND_SERVICE_TYPE_MICROPHONE else 0 // Keep the linter happy
+        ServiceCompat.startForeground(this, ID, n, foregroundServiceType)
+        ensureMonitorThread()
+        return START_REDELIVER_INTENT
+    }
+
+    private fun ensureMonitorThread() {
+        var mt = this.monitorThread
+        if (mt != null && mt.isAlive) {
+            return
+        }
+        val currentToken = Any()
+        this.connectionToken = currentToken
+        mt = Thread {
+            while (this.connectionToken == currentToken) {
+                try {
+                    ServerSocket(this.currentPort).use { serverSocket ->
+                        this.currentSocket = serverSocket
+                        // Store the chosen port.
+                        val localPort = serverSocket.localPort
+
+                        // Register the service so that parent devices can
+                        // locate the child device
+                        registerService(localPort)
+                        serverSocket.accept().use { socket ->
+                            Log.i(TAG, "Connection from parent device received")
+
+                            // We now have a client connection.
+                            // Unregister so no other clients will
+                            // attempt to connect
+                            unregisterService()
+                            serviceConnection(socket)
+                        }
+                    }
+                } catch (e: Exception) {
+                    if (this.connectionToken == currentToken) {
+                        // Just in case
+                        this.currentPort++
+                        Log.e(TAG, "Failed to open server socket. Port increased to $currentPort", e)
+                    }
+                }
+            }
+        }
+        this.monitorThread = mt
+        mt.start()
+    }
+
+    private fun registerService(port: Int) {
+        val serviceInfo = NsdServiceInfo()
+        serviceInfo.serviceName = "ChildMonitor on " + Build.MODEL
+        serviceInfo.serviceType = "_childmonitor._tcp."
+        serviceInfo.port = port
+        this.registrationListener = object : RegistrationListener {
+            override fun onServiceRegistered(nsdServiceInfo: NsdServiceInfo) {
+                // Save the service name.  Android may have changed it in order to
+                // resolve a conflict, so update the name you initially requested
+                // with the name Android actually used.
+                nsdServiceInfo.serviceName.let { serviceName ->
+                    Log.i(TAG, "Service name: $serviceName")
+                    monitorActivity?.let { ma ->
+                        ma.runOnUiThread {
+                            val statusText = ma.findViewById<TextView>(R.id.textStatus)
+                            statusText.setText(R.string.waitingForParent)
+                            val serviceText = ma.findViewById<TextView>(R.id.textService)
+                            serviceText.text = serviceName
+                            val portText = ma.findViewById<TextView>(R.id.port)
+                            portText.text = port.toString()
+                        }
+                    }
+                }
+            }
+
+            override fun onRegistrationFailed(serviceInfo: NsdServiceInfo, errorCode: Int) {
+                // Registration failed!  Put debugging code here to determine why.
+                Log.e(TAG, "Registration failed: $errorCode")
+            }
+
+            override fun onServiceUnregistered(arg0: NsdServiceInfo) {
+                // Service has been unregistered.  This only happens when you call
+                // NsdManager.unregisterService() and pass in this listener.
+                Log.i(TAG, "Unregistering service")
+            }
+
+            override fun onUnregistrationFailed(serviceInfo: NsdServiceInfo, errorCode: Int) {
+                // Unregistration failed.  Put debugging code here to determine why.
+                Log.e(TAG, "Unregistration failed: $errorCode")
+            }
+        }
+        nsdManager.registerService(
+                serviceInfo, NsdManager.PROTOCOL_DNS_SD, registrationListener)
+    }
+
+    private fun unregisterService() {
+        this.registrationListener?.let {
+            this.registrationListener = null
+            Log.i(TAG, "Unregistering monitoring service")
+            this.nsdManager.unregisterService(it)
+        }
+    }
+
+    private fun createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val serviceChannel = NotificationChannel(
+                    CHANNEL_ID,
+                    "Foreground Service Channel",
+                    NotificationManager.IMPORTANCE_DEFAULT
+            )
+            this.notificationManager.createNotificationChannel(serviceChannel)
+        }
+    }
+
+    private fun buildNotification(): Notification {
+        val text: CharSequence = "Child Device"
+        // Set the info for the views that show in the notification panel.
+        val b = NotificationCompat.Builder(this, CHANNEL_ID)
+        b.setSmallIcon(R.drawable.listening_notification) // the status icon
+                .setOngoing(true)
+                .setTicker(text) // the status text
+                .setContentTitle(text) // the label of the entry
+        return b.build()
+    }
+
+    override fun onDestroy() {
+        this.monitorThread?.let {
+            this.monitorThread = null
+            it.interrupt()
+        }
+        unregisterService()
+        this.connectionToken = null
+        this.currentSocket?.let {
+            try {
+                it.close()
+            } catch (e: IOException) {
+                Log.e(TAG, "Failed to close active socket on port $currentPort")
+            }
+        }
+        this.currentSocket = null
+
+        // Cancel the persistent notification.
+        this.notificationManager.cancel(R.string.listening)
+        ServiceCompat.stopForeground(this, ServiceCompat.STOP_FOREGROUND_REMOVE)
+        // Tell the user we stopped.
+        Toast.makeText(this, R.string.stopped, Toast.LENGTH_SHORT).show()
+        super.onDestroy()
+    }
+
+    override fun onBind(intent: Intent): IBinder {
+        return binder
+    }
+
+    inner class MonitorBinder : Binder() {
+        val service: MonitorService
+            get() = this@MonitorService
+    }
+
+    companion object {
+        const val TAG = "MonitorService"
+        const val CHANNEL_ID = TAG
+        const val ID = 1338
+    }
+}
@@ -0,0 +1,87 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.Manifest
+import android.app.Activity
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.os.Bundle
+import android.util.Log
+import android.view.View
+import android.widget.Button
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
+
+class StartActivity : Activity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        Log.i(TAG, "ChildMonitor launched")
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_start)
+        val monitorButton = findViewById<Button>(R.id.useChildDevice)
+        monitorButton.setOnClickListener { _: View? ->
+            Log.i(TAG, "Starting up monitor")
+            if (isAudioRecordingPermissionGranted) {
+                startActivity(Intent(applicationContext, MonitorActivity::class.java))
+            } else {
+                requestAudioPermission()
+            }
+        }
+        val connectButton = findViewById<Button>(R.id.useParentDevice)
+        connectButton.setOnClickListener { _: View? ->
+            Log.i(TAG, "Starting connection activity")
+            if (isMulticastPermissionGranted) {
+                val i = Intent(applicationContext, DiscoverActivity::class.java)
+                startActivity(i)
+            } else {
+                requestMulticastPermission()
+            }
+        }
+    }
+
+    private val isMulticastPermissionGranted: Boolean
+        get() = (ContextCompat.checkSelfPermission(this@StartActivity, Manifest.permission.CHANGE_WIFI_MULTICAST_STATE)
+                == PackageManager.PERMISSION_GRANTED)
+    private val isAudioRecordingPermissionGranted: Boolean
+        get() = (ContextCompat.checkSelfPermission(this@StartActivity, Manifest.permission.RECORD_AUDIO)
+                == PackageManager.PERMISSION_GRANTED)
+
+    private fun requestAudioPermission() {
+        ActivityCompat.requestPermissions(this@StartActivity, arrayOf(Manifest.permission.RECORD_AUDIO),
+                PERMISSIONS_REQUEST_RECORD_AUDIO)
+    }
+
+    private fun requestMulticastPermission() {
+        ActivityCompat.requestPermissions(this@StartActivity, arrayOf(Manifest.permission.CHANGE_WIFI_MULTICAST_STATE),
+                PERMISSIONS_REQUEST_MULTICAST)
+    }
+
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
+        if (requestCode == PERMISSIONS_REQUEST_RECORD_AUDIO && grantResults.size > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+            startActivity(Intent(applicationContext, MonitorActivity::class.java))
+        } else if (requestCode == PERMISSIONS_REQUEST_MULTICAST) {
+            // its okay if the permission was denied... the user will have to type the address manually
+            startActivity(Intent(applicationContext, DiscoverActivity::class.java))
+        }
+    }
+
+    companion object {
+        const val TAG = "ChildMonitor"
+        private const val PERMISSIONS_REQUEST_RECORD_AUDIO = 298349824
+        private const val PERMISSIONS_REQUEST_MULTICAST = 298349825
+    }
+}
@@ -0,0 +1,63 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.os.Handler
+import android.os.Looper
+import androidx.collection.CircularArray
+
+class VolumeHistory internal constructor(private val maxHistory: Int) {
+    private var maxVolume = 0.25
+    var volumeNorm = 1.0 / this.maxVolume
+        private set
+    private val historyData: CircularArray<Double> = CircularArray(maxHistory)
+    private val uiHandler: Handler = Handler(Looper.getMainLooper())
+
+    operator fun get(i: Int): Double {
+        return historyData[i]
+    }
+
+    fun size(): Int {
+        return historyData.size()
+    }
+
+    private fun addLast(volume: Double) {
+        // schedule editing of member vars on the ui event loop to avoid concurrency problems
+        uiHandler.post {
+            if (volume > this.maxVolume) {
+                this.maxVolume = volume
+                this.volumeNorm = 1.0 / volume
+            }
+            historyData.addLast(volume)
+            historyData.removeFromStart(historyData.size() - maxHistory)
+        }
+    }
+
+    fun onAudioData(data: ShortArray) {
+        if (data.isEmpty()) {
+            return
+        }
+        val scale = 1.0 / 128.0
+        var sum = 0.0
+        for (datum in data) {
+            val rel = datum * scale
+            sum += rel * rel
+        }
+        val volume = sum / data.size
+        addLast(volume)
+    }
+}
@@ -0,0 +1,89 @@
+/*
+ * This file is part of Child Monitor.
+ *
+ * Child Monitor 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.
+ *
+ * Child Monitor 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 Child Monitor. If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.rochefort.childmonitor
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
+import android.util.AttributeSet
+import android.view.View
+import kotlin.math.min
+
+class VolumeView : View {
+    private val paint: Paint
+    var volumeHistory: VolumeHistory? = null
+
+    constructor(context: Context?) : super(context) {
+        paint = initPaint()
+    }
+
+    constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs) {
+        paint = initPaint()
+    }
+
+    constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
+        paint = initPaint()
+    }
+
+    private fun initPaint(): Paint {
+        val paint = Paint()
+        paint.color = Color.rgb(255, 127, 0)
+        return paint
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        val volumeHistory = this.volumeHistory ?: return
+        val height = height
+        val width = width
+        val size = volumeHistory.size() // Size is at most width
+        val volumeNorm = volumeHistory.volumeNorm
+        val minBrightness = 0.3
+        val relativeBrightness: Double = if (size > 0) {
+            (volumeNorm * volumeHistory[size - 1]).coerceAtLeast(minBrightness)
+        } else {
+            minBrightness
+        }
+        val blue: Int
+        val rest: Int
+        if (relativeBrightness > 0.5) {
+            blue = 255
+            rest = (2 * 255 * (relativeBrightness - 0.5)).toInt()
+        } else {
+            blue = (255 * (relativeBrightness - 0.2) / 0.3).toInt()
+            rest = 0
+        }
+        val rgb = Color.rgb(rest, rest, blue)
+        canvas.drawColor(rgb)
+        if (size == 0) {
+            return
+        }
+        val margins = height * 0.1
+        val graphHeight = height - 2.0 * margins
+        val leftMost = (volumeHistory.size() - width).coerceAtLeast(0)
+        val graphScale = graphHeight * volumeNorm
+        var xPrev = 0
+        var yPrev = (margins + graphHeight - volumeHistory[leftMost] * graphScale).toInt()
+        val length = min(size, width)
+        for (xNext in 1 until length - 1) {
+            val yNext = (margins + graphHeight - volumeHistory[leftMost + xNext] * graphScale).toInt()
+            canvas.drawLine(xPrev.toFloat(), yPrev.toFloat(), xNext.toFloat(), yNext.toFloat(), paint)
+            xPrev = xNext
+            yPrev = yNext
+        }
+    }
+}
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Taken from https://android.googlesource.com/platform/external/nist-sip/+/6f95fdeab4481188b6260041b41d1db12b101266/src/com/android/sip/media/G711UCodec.java
+ * Adopted to the needs of the Child Monitor project.
+ */
+package de.rochefort.childmonitor.audio
+
+/**
+ * G.711 codec. This class provides u-law conversion.
+ */
+class G711UCodec {
+    fun decode(b16: ShortArray, ulaw: ByteArray, count: Int, offset: Int): Int {
+        var i = 0
+        var j = offset
+        while (i < count) {
+            b16[i] = table8to16[ulaw[j].toInt() and 0xFF]
+            i++
+            j++
+        }
+        return count
+    }
+
+    fun encode(b16: ShortArray, count: Int, b8: ByteArray, offset: Int): Int {
+        var i = 0
+        var j = offset
+        while (i < count) {
+            b8[j] = table13to8[b16[i].toInt() shr 4 and 0x1FFF]
+            i++
+            j++
+        }
+        return count
+    }
+
+    companion object {
+        // s00000001wxyz...s000wxyz
+        // s0000001wxyza...s001wxyz
+        // s000001wxyzab...s010wxyz
+        // s00001wxyzabc...s011wxyz
+        // s0001wxyzabcd...s100wxyz
+        // s001wxyzabcde...s101wxyz
+        // s01wxyzabcdef...s110wxyz
+        // s1wxyzabcdefg...s111wxyz
+        private val table13to8 = ByteArray(8192)
+        private val table8to16 = ShortArray(256)
+
+        init {
+            // b13 --> b8
+            var p = 1
+            var q = 0
+            while (p <= 0x80) {
+                var i = 0
+                var j = (p shl 4) - 0x10
+                while (i < 16) {
+                    val v = i + q xor 0x7F
+                    val value1 = v.toByte()
+                    val value2 = (v + 128).toByte()
+                    var m = j
+                    val e = j + p
+                    while (m < e) {
+                        table13to8[m] = value1
+                        table13to8[8191 - m] = value2
+                        m++
+                    }
+                    i++
+                    j += p
+                }
+                p = p shl 1
+                q += 0x10
+            }
+            // b8 --> b16
+            for (r in 0..7) {
+                var i = 0
+                var m = r shl 4
+                while (i < 16) {
+                    val v = (i + 0x10 shl r) - 0x10 shl 3
+                    table8to16[m xor 0x7F] = v.toShort()
+                    table8to16[(m xor 0x7F) + 128] = (65536 - v).toShort()
+                    i++
+                    m++
+                }
+            }
+        }
+    }
+}
@@ -1,170 +1,74 @@
 <?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
+<vector
    android:height="108dp"
+    android:width="108dp"
+    android:viewportHeight="108"
    android:viewportWidth="108"
-    android:viewportHeight="108">
-    <path
-        android:fillColor="#3DDC84"
-        android:pathData="M0,0h108v108h-108z" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M9,0L9,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,0L19,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M29,0L29,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M39,0L39,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M49,0L49,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M59,0L59,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M69,0L69,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M79,0L79,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M89,0L89,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M99,0L99,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,9L108,9"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,19L108,19"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,29L108,29"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,39L108,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,49L108,49"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,59L108,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,69L108,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,79L108,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,89L108,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,99L108,99"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,29L89,29"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,39L89,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
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-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,59L89,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,69L89,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,79L89,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M29,19L29,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M39,19L39,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M49,19L49,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M59,19L59,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M69,19L69,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M79,19L79,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#3DDC84"
+          android:pathData="M0,0h108v108h-108z"/>
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
 </vector>
@@ -0,0 +1,59 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/LinearLayout1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    tools:context="de.rochefort.childmonitor.MonitorActivity" >
+
+    <TextView
+        android:id="@+id/parentDeviceTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="@string/parentDevice"
+        android:textSize="25sp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <Button
+        android:id="@+id/discoverChildButton"
+        style="?android:attr/buttonStyleSmall"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/discoverChild"
+        android:textSize="17sp" />
+
+    <TextView
+        android:id="@+id/discoverChildDescription"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/discoverChildDescription"
+        android:textSize="14sp" />
+
+    <Space
+       android:layout_width="match_parent"
+       android:layout_height="15dip" />
+
+    <Button
+        android:id="@+id/enterChildAddressButton"
+        style="?android:attr/buttonStyleSmall"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/enterChildAddress"
+        android:textSize="17sp" />
+
+    <TextView
+        android:id="@+id/enterChildAddressDescription"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/enterChildAddressDescription"
+        android:textSize="14sp" />
+
+</LinearLayout>
@@ -0,0 +1,83 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/LinearLayout1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    tools:context="de.rochefort.childmonitor.MonitorActivity" >
+
+    <TextView
+        android:id="@+id/parentDeviceTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="@string/parentDevice"
+        android:textSize="25sp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <TextView
+        android:id="@+id/enterAddressInstructions"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/enterAddressInstructions" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <TextView
+        android:id="@+id/ipAddressTitle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:text="@string/addressTitle" />
+
+    <EditText
+        android:id="@+id/ipAddressField"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:ems="10"
+        android:hint="@string/exampleAddress"
+        android:inputType="textUri"
+        android:textSize="20sp"
+        android:nextFocusForward="@+id/portField" >
+
+    </EditText>
+
+    <TextView
+        android:id="@+id/portTitle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:text="@string/portTitle" />
+
+    <EditText
+        android:id="@+id/portField"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:ems="10"
+        android:inputType="number"
+        android:maxLength="5"
+        android:hint="@string/examplePort"
+        android:nextFocusForward="@+id/connectViaAddressButton"/>
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <Button
+        android:id="@+id/connectViaAddressButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:text="@string/connect" />
+
+</LinearLayout>
@@ -0,0 +1,41 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/LinearLayout1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    tools:context="de.rochefort.childmonitor.MonitorActivity" >
+
+    <TextView
+        android:id="@+id/parentDeviceTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="@string/parentDevice"
+        android:textSize="25sp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <TextView
+        android:id="@+id/selectChildDeviceTitle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/selectChildDevice"
+        android:textSize="20sp" />
+
+    <ListView
+        android:id="@+id/ServiceTable"
+        android:scrollbars="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="0.32"
+        android:padding="10dp" >
+    </ListView>
+
+</LinearLayout>
@@ -0,0 +1,67 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/LinearLayout1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:keepScreenOn="true"
+    android:orientation="vertical"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context="de.rochefort.childmonitor.MonitorActivity">
+
+    <TextView
+        android:id="@id/parentDeviceTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="@string/parentDevice"
+        android:textSize="25sp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <TextView
+        android:id="@+id/connectedToTitle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/connectedTo"
+        android:textSize="20sp" />
+
+    <TextView
+        android:id="@+id/connectedTo"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text=""
+        android:textSize="20sp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <TextView
+        android:id="@+id/status"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/status"
+        android:textSize="20sp" />
+
+    <TextView
+        android:id="@+id/textStatus"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text=""
+        android:textSize="20sp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <de.rochefort.childmonitor.VolumeView
+        android:id="@+id/volume"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+</LinearLayout>
@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
-    android:padding="24dp"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-    <Button
-        android:id="@+id/startStreamButton"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="Start Streaming"/>
-
-    <TextView
-        android:id="@+id/ipAddressText"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="16dp"
-        android:text="IP-Adresse: wird geladen..."
-        android:textSize="16sp"
-        android:textColor="@android:color/black" />
-
-    <TextView
-        android:id="@+id/PortText"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="16dp"
-        android:text="Port zu wählen: 50005"
-        android:textSize="16sp"
-        android:textColor="@android:color/black" />
-</LinearLayout>
@@ -0,0 +1,117 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/LinearLayout1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:keepScreenOn="true"
+    tools:context="de.rochefort.childmonitor.MonitorActivity" >
+
+    <TextView
+        android:id="@+id/childDeviceTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="@string/childDevice"
+        android:textSize="25sp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="15dip" />
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fillViewport="true">
+
+        <LinearLayout
+            android:id="@+id/LinearLayout2"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:keepScreenOn="true"
+            tools:context="de.rochefort.childmonitor.MonitorActivity" >
+
+            <TextView
+                android:id="@+id/serviceTitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/serviceTitle"
+                android:textSize="20sp" />
+
+            <TextView
+                android:id="@+id/textService"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/loading"
+                android:textSize="20sp" />
+
+            <TextView
+                android:id="@+id/serviceDescription"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/serviceDescription" />
+
+            <Space
+                android:layout_width="match_parent"
+                android:layout_height="15dip" />
+
+            <Space
+                android:layout_width="match_parent"
+                android:layout_height="15dip" />
+
+            <TextView
+                android:id="@+id/portTitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/portTitle"
+                android:textSize="20sp" />
+
+            <TextView
+                android:id="@+id/port"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/loading"
+                android:textSize="20sp"/>
+
+            <Space
+                android:layout_width="match_parent"
+                android:layout_height="15dip" />
+
+            <TextView
+                android:id="@+id/addressTitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/addressTitle"
+                android:textSize="20sp" />
+
+            <Space
+                android:layout_width="match_parent"
+                android:layout_height="15dip" />
+
+            <TextView
+                android:id="@+id/address"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text=""
+                android:textSize="15sp"/>
+
+            <Space
+                android:layout_width="match_parent"
+                android:layout_height="15dip" />
+
+            <TextView
+                android:id="@+id/textStatus"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text=""
+                android:textSize="20sp" />
+        </LinearLayout>
+
+    </ScrollView>
+
+</LinearLayout>
@@ -0,0 +1,46 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/LinearLayout1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    tools:context="de.rochefort.childmonitor.StartActivity" >
+
+    <Button
+        android:id="@+id/useChildDevice"
+        style="?android:attr/buttonStyleSmall"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/useAsChildDevice"
+        android:textSize="17sp" />
+
+    <TextView
+        android:id="@+id/childDescription"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/childDescription"
+        android:textSize="14sp" />
+
+	<Space
+	   android:layout_width="match_parent"
+	   android:layout_height="15dip" />
+
+    <Button
+        android:id="@+id/useParentDevice"
+        style="?android:attr/buttonStyleSmall"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/useAsParentDevice"
+        android:textSize="17sp" />
+
+    <TextView
+        android:id="@+id/parentDescription"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/parentDescription" />
+
+</LinearLayout>
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/availableChildrenList"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:textAppearance="?android:attr/textAppearanceListItemSmall"
+    android:gravity="center_vertical"
+    android:paddingStart="16dp"
+    android:paddingLeft="16dp"
+    android:paddingEnd="16dp"
+    android:paddingRight="16dp"
+    android:minHeight="?android:attr/listPreferredItemHeightSmall" />
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">Child Monitor</string>
+    <string name="action_settings">Einstellungen</string>
+    <string name="useAsParentDevice">Als Eltern-Gerät benutzen</string>
+    <string name="useAsChildDevice">Als Kind-Gerät benutzen</string>
+    <string name="childDescription">Gerät ist beim Kind platziert und sendet Tonsignale zum Eltern-Gerät</string>
+    <string name="parentDescription">Gekoppelt mit Kind-Gerät und gibt empfangene Tonsignale wieder.</string>
+    <string name="childDevice">Kind-Gerät</string>
+    <string name="serviceTitle">Dienst:</string>
+    <string name="serviceDescription">Name des Diensten, mit dem sich die Eltern verbinden müssen.</string>
+    <string name="loading">Lade...</string>
+    <string name="stopped">Angehalten</string>
+    <string name="streaming">Streaming...</string>
+    <string name="waitingForParent">Warte auf Eltern</string>
+    <string name="parentDevice">Eltern-Gerät</string>
+    <string name="selectChildDevice">Wähle Kind-Gerät</string>
+    <string name="status">Status:</string>
+    <string name="connectedTo">Verbunden mit:</string>
+    <string name="disconnected">Getrennt</string>
+    <string name="listening">Lausche...</string>
+    <string name="addressTitle">Adressen:</string>
+    <string name="portTitle">Port:</string>
+    <string name="notConnected">Mit keinem Netzwerk verbunden</string>
+    <string name="enterAddressInstructions">Gib die IP-Adresse und den Port des Kind-Gerätes ein und klicke auf Verbinden</string>
+    <string name="connect">Verbinden</string>
+    <string name="exampleAddress">192.168.1.2</string>
+    <string name="examplePort">10000</string>
+    <string name="invalidPort">Entweder wurde kein Port eingegeben oder er ist ungültig</string>
+    <string name="invalidAddress">Das Adressfeld muss ausgefüllt sein</string>
+    <string name="discoverChild">Suche Kind im Netzwerk</string>
+    <string name="discoverChildDescription">Wähle ein Kind aus einer Liste der erkannten Kinder im Netzwerk</string>
+    <string name="enterChildAddress">Wähle Kind durch Adresse</string>
+    <string name="enterChildAddressDescription">Gib die Adresse und den Port des Kind ein</string>
+</resources>
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">子モニター</string>
+    <string name="action_settings">設定</string>
+    <string name="useAsParentDevice">親機として使用する</string>
+    <string name="useAsChildDevice">子機として使用する</string>
+    <string name="childDescription">端末をベビーの横に置くと、音声が親機に送られます</string>
+    <string name="parentDescription">子機とペアにして、受信した音声を再生します</string>
+    <string name="childDevice">子機</string>
+    <string name="serviceTitle">サービス:</string>
+    <string name="serviceDescription">親機がペアにするサービスの名前</string>
+    <string name="loading">読み込み中...</string>
+    <string name="stopped">停止しました</string>
+    <string name="streaming">ストリーム中...</string>
+    <string name="waitingForParent">親機を待機中...</string>
+    <string name="parentDevice">親機</string>
+    <string name="selectChildDevice">子機を選択:</string>
+    <string name="status">ステータス:</string>
+    <string name="connectedTo">接続しました:</string>
+    <string name="disconnected">切断しました</string>
+    <string name="listening">リスニング中...</string>
+    <string name="addressTitle">アドレス:</string>
+    <string name="portTitle">ポート:</string>
+    <string name="notConnected">ネットワークに接続されていません</string>
+    <string name="enterAddressInstructions">子機の IP アドレスとポートを入力して、接続をクリックしてください</string>
+    <string name="connect">接続</string>
+    <string name="exampleAddress">192.168.1.2</string>
+    <string name="examplePort">10000</string>
+    <string name="invalidPort">ポートが入力されていないか正しくありません</string>
+    <string name="invalidAddress">アドレスフィールドを入力してください</string>
+    <string name="discoverChild">ネットワークで子機を探索</string>
+    <string name="discoverChildDescription">ネットワークで検出した子機を選択します</string>
+    <string name="enterChildAddress">子機をアドレスで選択</string>
+    <string name="enterChildAddressDescription">子機のアドレスとポートを入力します</string>
+</resources>
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">ChildMonitor</string>
+    <string name="action_settings">Instellingen</string>
+    <string name="useAsParentDevice">Gebruiken als ouderapparaat</string>
+    <string name="useAsChildDevice">Gebruiken als kindapparaat</string>
+    <string name="childDescription">Het apparaat wordt bij de baby geplaatst en verstuurt audio naar een gekoppeld ouderapparaat.</string>
+    <string name="parentDescription">Verbindt met kindapparaat en speelt ontvangen audio af</string>
+    <string name="childDevice">Kindapparaat</string>
+    <string name="serviceTitle">Dienst:</string>
+    <string name="serviceDescription">Naam van de dienst waar de ouder mee moet verbinden</string>
+    <string name="loading">Bezig met laden...</string>
+    <string name="stopped">Gestopt</string>
+    <string name="streaming">Bezig met uitzenden...</string>
+    <string name="waitingForParent">Bezig met wachten op ouderapparaat...</string>
+    <string name="parentDevice">Ouderapparaat</string>
+    <string name="selectChildDevice">Selecteer kindapparaat:</string>
+    <string name="status">Status:</string>
+    <string name="connectedTo">Verbonden met:</string>
+    <string name="disconnected">Verbinding verbroken</string>
+    <string name="listening">Bezig met luisteren...</string>
+    <string name="addressTitle">Adressen:</string>
+    <string name="portTitle">Poort:</string>
+    <string name="notConnected">Niet verbonden met een netwerk</string>
+    <string name="enterAddressInstructions">Voer het IP-adres en de poort van een kindapparaat in en druk op Verbinden</string>
+    <string name="connect">Verbinden</string>
+    <string name="exampleAddress">192.168.1.2</string>
+    <string name="examplePort">10000</string>
+    <string name="invalidPort">Er is geen of een ongeldig poortnummer ingevoerd</string>
+    <string name="invalidAddress">Het adresveld moet worden ingevuld</string>
+    <string name="discoverChild">Kindapparaat ontdekken op netwerk</string>
+    <string name="discoverChildDescription">Selecteer het kindapparaat uit een lijst van ontdekte apparaten op het netwerk</string>
+    <string name="enterChildAddress">Selecteer kindapparaat middels adres</string>
+    <string name="enterChildAddressDescription">Voer het adres en de poort in van een kindapparaat</string>
+</resources>
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">Monitor para crianças</string>
+    <string name="action_settings">Configurações</string>
+    <string name="useAsParentDevice">Usar como Dispositivo de Pais</string>
+    <string name="useAsChildDevice">Usar como Dispositivo para Crianças</string>
+    <string name="childDescription">O dispositivo é colocado com o bebê para enviar áudio a um Dispositivo de Pais conectado</string>
+    <string name="parentDescription">Conecta com o Dispositivo para Crianças e reproduz o áudio recebido</string>
+    <string name="childDevice">Dispositivo para Crianças</string>
+    <string name="serviceTitle">Serviço:</string>
+    <string name="serviceDescription">Nome do serviço ao qual os pais devem se conectar</string>
+    <string name="loading">Carregando...</string>
+    <string name="stopped">Parado</string>
+    <string name="streaming">Transmitindo...</string>
+    <string name="waitingForParent">Esperando os Pais...</string>
+    <string name="parentDevice">Dispositivo de Pais</string>
+    <string name="selectChildDevice">Selecione o Dispositivo para Crianças:</string>
+    <string name="status">Status:</string>
+    <string name="connectedTo">Conectado a:</string>
+    <string name="disconnected">Desconectado</string>
+    <string name="listening">Ouvindo...</string>
+    <string name="addressTitle">Endereços:</string>
+    <string name="portTitle">Porta:</string>
+    <string name="notConnected">Não conectado a nenhuma rede</string>
+    <string name="enterAddressInstructions">Digite o endereço IP e a Porta de Dispositivo para Criança e clique em Conectar</string>
+    <string name="connect">Conectar</string>
+    <string name="exampleAddress">192.168.1.2</string>
+    <string name="examplePort">10000</string>
+    <string name="invalidPort">Ou não foi digitada nenhuma Porta ou é inválida</string>
+    <string name="invalidAddress">O campo de endereço precisa ser preenchido</string>
+    <string name="discoverChild">Descubra o Dispositivo para Criança na Rede</string>
+    <string name="discoverChildDescription">Selecione um Dispositivo para Criança de uma lista que foi encontrada na rede</string>
+    <string name="enterChildAddress">Selecione Dispositivo para Criança por Endereço</string>
+    <string name="enterChildAddressDescription">Digite o endereço e a Porta de Dispositivo para Criança</string>
+</resources>
@@ -0,0 +1,11 @@
+<resources>
+
+    <!--
+        Base application theme for API 11+. This theme completely replaces
+        AppBaseTheme from res/values/styles.xml on API 11+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">
+        <!-- API 11 theme customizations can go here. -->
+    </style>
+
+</resources>
@@ -0,0 +1,12 @@
+<resources>
+
+    <!--
+        Base application theme for API 14+. This theme completely replaces
+        AppBaseTheme from BOTH res/values/styles.xml and
+        res/values-v11/styles.xml on API 14+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- API 14 theme customizations can go here. -->
+    </style>
+
+</resources>
@@ -0,0 +1,10 @@
+<resources>
+
+    <!--
+         Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively).
+    -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+
+</resources>
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <color name="purple_200">#FFBB86FC</color>
-    <color name="purple_500">#FF6200EE</color>
-    <color name="purple_700">#FF3700B3</color>
-    <color name="teal_200">#FF03DAC5</color>
-    <color name="teal_700">#FF018786</color>
-    <color name="black">#FF000000</color>
-    <color name="white">#FFFFFFFF</color>
-</resources>
@@ -0,0 +1,7 @@
+<resources>
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+
+</resources>
@@ -1,3 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="app_name">Babyphone</string>
+
+    <string name="app_name">Child Monitor</string>
+    <string name="action_settings">Settings</string>
+    <string name="useAsParentDevice">Use as Parent Device</string>
+    <string name="useAsChildDevice">Use as Child Device</string>
+    <string name="childDescription">Device is placed with baby, and sends audio to a paired parent device</string>
+    <string name="parentDescription">Pairs with child device and plays received audio</string>
+    <string name="childDevice">Child Device</string>
+    <string name="serviceTitle">Service:</string>
+    <string name="serviceDescription">Name of the service that parent must pair to</string>
+    <string name="loading">Loading...</string>
+    <string name="stopped">Stopped</string>
+    <string name="streaming">Streaming...</string>
+    <string name="waitingForParent">Waiting for Parent...</string>
+    <string name="parentDevice">Parent Device</string>
+    <string name="selectChildDevice">Select Child Device:</string>
+    <string name="status">Status:</string>
+    <string name="connectedTo">Connected To:</string>
+    <string name="disconnected">Disconnected</string>
+    <string name="listening">Listening...</string>
+    <string name="addressTitle">Addresses:</string>
+    <string name="portTitle">Port:</string>
+    <string name="notConnected">Not connected to any network</string>
+    <string name="enterAddressInstructions">Enter the IP Address and port of a child and click Connect</string>
+    <string name="connect">Connect</string>
+    <string name="exampleAddress">192.168.1.2</string>
+    <string name="examplePort">10000</string>
+    <string name="invalidPort">Either no port was entered or it is invalid</string>
+    <string name="invalidAddress">The address field needs to be filled out</string>
+    <string name="discoverChild">Discover Child on Network</string>
+    <string name="discoverChildDescription">Select child from a list of discovered children on the network</string>
+    <string name="enterChildAddress">Select Child by Address</string>
+    <string name="enterChildAddressDescription">Enter the address and port of the child</string>
 </resources>
@@ -1,9 +1,10 @@
-<!-- res/values/styles.xml -->
 <resources>
-    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
-        <!-- Customize your theme here -->
-        <item name="colorPrimary">@color/purple_500</item>
-        <item name="colorPrimaryDark">@color/purple_700</item>
-        <item name="colorAccent">@color/teal_200</item>
-    </style>
+
+    <!--
+        Base application theme, dependent on API level. This theme is replaced
+        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
+    -->
+
+    <!-- Application theme. -->
+
 </resources>
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="Theme.Babyphone" parent="android:Theme.Material.Light.NoActionBar" />
-</resources>
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!--
-   Sample backup rules file; uncomment and customize as necessary.
-   See https://developer.android.com/guide/topics/data/autobackup
-   for details.
-   Note: This file is ignored for devices older than API 31
-   See https://developer.android.com/about/versions/12/backup-restore
-->
-<full-backup-content>
-    <!--
-   <include domain="sharedpref" path="."/>
-   <exclude domain="sharedpref" path="device.xml"/>
-->
-</full-backup-content>
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!--
-   Sample data extraction rules file; uncomment and customize as necessary.
-   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
-   for details.
-->
-<data-extraction-rules>
-    <cloud-backup>
-        <!-- TODO: Use <include> and <exclude> to control what is backed up.
-        <include .../>
-        <exclude .../>
-        -->
-    </cloud-backup>
-    <!--
-    <device-transfer>
-        <include .../>
-        <exclude .../>
-    </device-transfer>
-    -->
-</data-extraction-rules>
@@ -1,17 +0,0 @@
-package com.example.babyphone
-
-import org.junit.Test
-
-import org.junit.Assert.*
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-class ExampleUnitTest {
-    @Test
-    fun addition_isCorrect() {
-        assertEquals(4, 2 + 2)
-    }
-}
@@ -0,0 +1,35 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    ext {
+        kotlin_version = '1.9.22'
+    }
+    repositories {
+        mavenCentral()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:8.2.2'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+plugins {
+    id 'org.jetbrains.kotlin.jvm' version '1.9.22'
+}
+
+allprojects {
+    repositories {
+        mavenCentral()
+        google()
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+}
@@ -1,6 +0,0 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-plugins {
-    alias(libs.plugins.android.application) apply false
-    alias(libs.plugins.kotlin.android) apply false
-    alias(libs.plugins.kotlin.compose) apply false
-}
@@ -0,0 +1,7 @@
+<p>Ein quelloffenes Babyfon f&uuml;r Android</p>
+<p>Child Monitor l&auml;sst zwei Androidger&auml;te als Babyfon fungieren. Das erste Ger&auml;t bleibt im Kinderzimmer. Das zweite Ger&auml;t kann sich &uuml;ber das Netzwerk mit ihm verbinden und einen Audiostream empfangen.</p>
+<p>Dieses Projekt ist ein Fork von Protect Baby Monitor, welches von seinem Entwickler als "on hiatus" (pausiert) gekennzeichnet wurde.</p>
+<p>Child Monitor funktioniert auf Android 5.0 (Lollipop) und neuer, d.h. ab Android SDK 21.</p>
+<p>Achtung: Diese Version von Child Monitor ist inkompatibel zu älteren Versionen als 1.0!</p>
+<p>Fehlerbehebung in dieser Version: Das Elterngerät erkennt jetzt, wenn das Kindgerät keine Daten mehr schickt
+(z.B. aufgrund von Netzwerkproblemen), trennt die Verbindung und spielt den Warnton ab.</p>
--- a/Show More
+++ b/Show More