Initial importmain

57 files changed, 2185 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..24bddc8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,60 @@
+# Built application files
+app/release
+*.apk
+*.ap_
+
+# Files for the ART/Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+out/
+
+# Gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+*.log
+
+# Android Studio Navigation editor temp files
+.navigation/
+
+# Android Studio captures folder
+captures/
+
+# IntelliJ
+*.iml
+.idea/*
+!.idea/runConfigurations
+
+# Keystore files
+*.jks
+
+# External native build folder generated in Android Studio 2.2 and later
+.externalNativeBuild
+
+# Google Services (e.g. APIs or Firebase)
+google-services.json
+
+# Freeline
+freeline.py
+freeline/
+freeline_project_description.json
+
+# fastlane
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots
+fastlane/test_output
+fastlane/readme.md
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0e90f33
--- /dev/null
+++ b/README.md
@@ -0,0 +1,10 @@
+# CCCB Display Camera Control Tool
+
+
+Main logic is in
+
+`CCCB_Camera_Andoroid/tflite/src/main/java/com/example/android/camerax/tflite`
+
+the rest is boilerplate from
+
+https://github.com/android/camera-samples
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..30ce363
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * 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
+ *
+ *     https://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.
+ */
+
+buildscript {
+
+    ext {
+        // Top-level variables used for versioning
+        ext.kotlin_version = '1.5.21'
+        ext.java_version = JavaVersion.VERSION_1_8
+    }
+
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:7.4.2'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.diffplug.spotless:spotless-plugin-gradle:5.11.1'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        maven { // repo for TFLite snapshot
+            name 'ossrh-snapshot'
+            url 'https://s01.oss.sonatype.org/content/repositories/snapshots'
+        }
+    }
+}
+
+subprojects {
+    apply plugin: 'com.diffplug.spotless'
+    spotless {
+        java {
+            target "**/*.java"
+            trimTrailingWhitespace()
+            removeUnusedImports()
+            googleJavaFormat()
+            endWithNewline()
+        }
+        kotlin {
+            target "**/*.kt"
+            trimTrailingWhitespace()
+            endWithNewline()
+        }
+    }
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..23339e0
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f6b961f
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.jar
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..38c6ed2
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Dec 16 12:00:46 WET 2020
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..cccdd3d
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..844db50
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+include 'tflite'
diff --git a/tflite/.gitignore b/tflite/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/tflite/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/tflite/build.gradle b/tflite/build.gradle
new file mode 100644
index 0000000..8e9fcf4
--- /dev/null
+++ b/tflite/build.gradle
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * 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
+ *
+ *     https://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.
+ */
+
+apply plugin: "com.android.application"
+apply plugin: "kotlin-android"
+
+android {
+    compileSdkVersion 31
+    ndkVersion "21.3.6528147"
+
+    defaultConfig {
+        applicationId 'com.android.example.camerax.tflite'
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "0.0.1"
+    }
+
+    compileOptions {
+        sourceCompatibility rootProject.ext.java_version
+        targetCompatibility rootProject.ext.java_version
+    }
+
+    kotlinOptions {
+        jvmTarget = rootProject.ext.java_version
+    }
+
+
+    buildFeatures {
+        viewBinding true
+    }
+    androidResources {
+        noCompress 'lite'
+    }
+    namespace 'com.android.example.camerax.tflite'
+}
+
+dependencies {
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
+
+    // App compat and UI things
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+
+    // CameraX
+    def camerax_version = "1.1.0-beta01"
+    implementation "androidx.camera:camera-core:${camerax_version}"
+    implementation "androidx.camera:camera-camera2:${camerax_version}"
+    implementation "androidx.camera:camera-lifecycle:${camerax_version}"
+    implementation "androidx.camera:camera-view:${camerax_version}"
+    implementation "androidx.camera:camera-video:${camerax_version}"
+
+
+    // Tensorflow lite dependencies
+    implementation 'org.tensorflow:tensorflow-lite:2.9.0'
+    implementation 'org.tensorflow:tensorflow-lite-gpu:2.9.0'
+    implementation 'org.tensorflow:tensorflow-lite-support:0.4.2'
+
+    testImplementation 'org.robolectric:robolectric:4.4'
+    testImplementation 'junit:junit:4.13.2'
+}
diff --git a/tflite/src/main/AndroidManifest.xml b/tflite/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..d38c505
--- /dev/null
+++ b/tflite/src/main/AndroidManifest.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- Declare features -->
+    <uses-feature android:name="android.hardware.camera" />
+
+    <!-- Declare permissions -->
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme"
+        android:screenOrientation="landscape"
+
+        tools:ignore="AllowBackup,GoogleAppIndexingWarning">
+
+        <activity
+            android:name="com.example.android.camerax.tflite.CameraActivity"
+            android:rotationAnimation="seamless"
+            android:screenOrientation="landscape"
+            tools:targetApi="O">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>
diff --git a/tflite/src/main/ic_launcher-playstore.png b/tflite/src/main/ic_launcher-playstore.png
new file mode 100644
index 0000000..dd70d80
--- /dev/null
+++ b/tflite/src/main/ic_launcher-playstore.png
diff --git a/tflite/src/main/java/com/example/android/camerax/tflite/CameraActivity.kt b/tflite/src/main/java/com/example/android/camerax/tflite/CameraActivity.kt
new file mode 100644
index 0000000..cde9778
--- /dev/null
+++ b/tflite/src/main/java/com/example/android/camerax/tflite/CameraActivity.kt
@@ -0,0 +1,281 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * 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
+ *
+ *     https://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.
+ */
+
+package com.example.android.camerax.tflite
+
+import android.Manifest
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.pm.PackageManager
+import android.graphics.Bitmap
+import android.graphics.Color
+import android.graphics.Matrix
+import android.graphics.RectF
+import android.os.Bundle
+import android.util.Log
+import android.util.Size
+import android.view.View
+import android.view.ViewGroup
+import androidx.appcompat.app.AppCompatActivity
+import androidx.camera.core.AspectRatio
+import androidx.camera.core.CameraSelector
+import androidx.camera.core.ImageAnalysis
+import androidx.camera.core.Preview
+import androidx.camera.lifecycle.ProcessCameraProvider
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
+import androidx.lifecycle.LifecycleOwner
+import com.android.example.camerax.tflite.databinding.ActivityCameraBinding
+import java.net.DatagramPacket
+import java.net.DatagramSocket
+import java.net.InetSocketAddress
+import java.util.concurrent.Executors
+import java.util.concurrent.TimeUnit
+import kotlin.random.Random
+
+
+/** Activity that displays the camera and performs object detection on the incoming frames */
+class CameraActivity : AppCompatActivity() {
+
+    private lateinit var activityCameraBinding: ActivityCameraBinding
+
+    private lateinit var bitmapBuffer: Bitmap
+
+    private val executor = Executors.newSingleThreadExecutor()
+    private val permissions = listOf(Manifest.permission.CAMERA)
+    private val permissionsRequestCode = Random.nextInt(0, 10000)
+
+    private var lensFacing: Int = CameraSelector.LENS_FACING_BACK
+    private val isFrontFacing get() = lensFacing == CameraSelector.LENS_FACING_FRONT
+
+    private var pauseAnalysis = false
+    private var imageRotationDegrees: Int = 0
+    private var socket: DatagramSocket = DatagramSocket()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        activityCameraBinding = ActivityCameraBinding.inflate(layoutInflater)
+        setContentView(activityCameraBinding.root)
+    }
+
+    override fun onDestroy() {
+
+        // Terminate all outstanding analyzing jobs (if there is any).
+        executor.apply {
+            shutdown()
+            awaitTermination(1000, TimeUnit.MILLISECONDS)
+        }
+        super.onDestroy()
+    }
+
+    /** Declare and bind preview and analysis use cases */
+    @SuppressLint("UnsafeExperimentalUsageError")
+    private fun bindCameraUseCases() = activityCameraBinding.viewFinder.post {
+
+        val cameraProviderFuture = ProcessCameraProvider.getInstance(this)
+        cameraProviderFuture.addListener ({
+
+            // Camera provider is now guaranteed to be available
+            val cameraProvider = cameraProviderFuture.get()
+
+            // Set up the view finder use case to display camera preview
+            val preview = Preview.Builder()
+                .setTargetAspectRatio(AspectRatio.RATIO_4_3)
+                .setTargetRotation(activityCameraBinding.viewFinder.display.rotation)
+                .build()
+
+            // Set up the image analysis use case which will process frames in real time
+            val imageAnalysis = ImageAnalysis.Builder()
+                .setTargetResolution(Size(448, 236))
+                .setTargetRotation(activityCameraBinding.viewFinder.display.rotation)
+                .setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
+                .setOutputImageFormat(ImageAnalysis.OUTPUT_IMAGE_FORMAT_RGBA_8888)
+                .build()
+
+            var frameCounter = 0
+            var lastFpsTimestamp = System.currentTimeMillis()
+
+            imageAnalysis.setAnalyzer(executor, ImageAnalysis.Analyzer { image ->
+                if (!::bitmapBuffer.isInitialized) {
+                    // The image rotation and RGB image buffer are initialized only once
+                    // the analyzer has started running
+                    imageRotationDegrees = image.imageInfo.rotationDegrees
+                    bitmapBuffer = Bitmap.createBitmap(
+                        image.width, image.height, Bitmap.Config.ARGB_8888)
+                }
+
+                // Early exit: image analysis is in paused state
+                if (pauseAnalysis) {
+                    image.close()
+                    return@Analyzer
+                }
+
+                // Copy out RGB bits to our shared buffer
+                image.use { bitmapBuffer.copyPixelsFromBuffer(image.planes[0].buffer)  }
+
+//              val CAM_WIDTH = 858
+//              val CAM_HEIGHT = 480
+                val CAM_WIDTH = 480
+                val CAM_HEIGHT = 360
+
+                val DISPLAY_WIDTH = 448
+                val DISPLAY_HEIGHT = 160
+                val DISPLAY_VHEIGHT = 236
+
+                val scaledBitmap = Bitmap.createScaledBitmap(bitmapBuffer, DISPLAY_WIDTH, DISPLAY_VHEIGHT, true)
+
+                val scratch = IntArray((2 + DISPLAY_VHEIGHT) * DISPLAY_WIDTH)
+                val output = UByteArray(10 + DISPLAY_HEIGHT * DISPLAY_WIDTH / 8)
+                output[1] = 0x12u
+                output[4] = 0x23u
+                var offset = 10
+/*
+                for ( row in 0..DISPLAY_VHEIGHT - 1) {
+                    val zeile = (row * bitmapBuffer.height ) / DISPLAY_VHEIGHT
+                    for (column in 0..DISPLAY_WIDTH - 1) {
+                        val spalte = (column * bitmapBuffer.width ) / DISPLAY_WIDTH
+                        val pixel = bitmapBuffer.getPixel(spalte, zeile)
+                        scratch[row * DISPLAY_WIDTH + column] = Color.red(pixel) * 19535 + Color.green(pixel) * 38470 + Color.blue(pixel) * 7448
+                    }
+                }
+*/
+                scaledBitmap.getPixels(scratch, 0, DISPLAY_WIDTH, 0, 0, DISPLAY_WIDTH, DISPLAY_VHEIGHT)
+                for (off in 0..DISPLAY_VHEIGHT * DISPLAY_WIDTH)
+                    scratch[off] = Color.red(scratch[off]) * 19535 + Color.green(scratch[off]) * 38470 + Color.blue(scratch[off]) * 7448
+
+                var acc = 0
+                var accv = 0
+
+                for ( row in 0.. DISPLAY_VHEIGHT - 1)
+                    for ( column in 0..DISPLAY_WIDTH - 1) {
+                        val pixel = scratch[row * DISPLAY_WIDTH + column]
+                        val bwpixel = if (pixel < 0x810000) 0 else 0xFFFFFF
+
+                        if (row % 12 < 8) {
+                            acc = (acc shl 1) + (bwpixel shr 23)
+                            if (++accv == 8) {
+                                output[offset++] = acc.toUByte()
+                                acc = 0
+                                accv = 0
+                            }
+                        }
+
+                        val err = (pixel - bwpixel) / 42
+                        fun AddSatShift(xoff : Int, yoff: Int, shift : Int) {
+                            val pixelold = scratch[(row + yoff) * DISPLAY_WIDTH + column + xoff ]
+                            var r = pixelold + (err shl (16 - shift))
+                            if ( r < 0 ) r = 0
+                            if ( r > 0xFFFFFF) r = 0xFFFFFF
+                            scratch[(row + yoff) * DISPLAY_WIDTH + column + xoff ] = r
+                        }
+
+                        AddSatShift(0, 1, 13)
+                        AddSatShift(0, 2, 14)
+                        if (column > 0) {
+                            AddSatShift(-1, 1, 14)
+                            AddSatShift(-1, 2, 15)
+                        }
+
+                        if (column > 1) {
+                            AddSatShift(-2, 1, 15)
+                            AddSatShift(-2, 2, 16)
+                        }
+
+                        if (column < DISPLAY_WIDTH - 1) {
+                            AddSatShift( 1, 0, 13)
+                            AddSatShift( 1, 1, 14)
+                            AddSatShift( 1, 2, 15)
+                        }
+
+                        if (column < DISPLAY_WIDTH - 2) {
+                            AddSatShift( 2, 0, 14)
+                            AddSatShift( 2, 1, 15)
+                            AddSatShift( 2, 2, 16)
+                        }
+                    }
+                val address = InetSocketAddress("172.23.42.29", 2342 )
+//                val address = InetSocketAddress("192.168.178.69", 2342 )
+                try {
+                    socket.send(DatagramPacket(output.toByteArray(), offset, address))
+                } catch (e: Exception) {
+                    // Ignore network exceptions
+                }
+
+                // Compute the FPS of the entire pipeline
+                val frameCount = 10
+                if (++frameCounter % frameCount == 0) {
+                    frameCounter = 0
+                    val now = System.currentTimeMillis()
+                    val delta = now - lastFpsTimestamp
+                    val fps = 1000 * frameCount.toFloat() / delta
+//                    Log.d(TAG, "FPS: ${"%.02f".format(fps)} " + bitmapBuffer.width + " x " + bitmapBuffer.height)
+
+                    activityCameraBinding.viewFinder.post {
+                        activityCameraBinding.textPrediction.text = "FPS: ${"%.02f".format(fps)}"
+                    }
+
+                    lastFpsTimestamp = now
+                }
+            })
+
+            // Create a new camera selector each time, enforcing lens facing
+            val cameraSelector = CameraSelector.Builder().requireLensFacing(lensFacing).build()
+
+            // Apply declared configs to CameraX using the same lifecycle owner
+            cameraProvider.unbindAll()
+            cameraProvider.bindToLifecycle(
+                this as LifecycleOwner, cameraSelector, preview, imageAnalysis)
+
+            // Use the camera object to link our preview use case with the view
+            preview.setSurfaceProvider(activityCameraBinding.viewFinder.surfaceProvider)
+
+        }, ContextCompat.getMainExecutor(this))
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+        // Request permissions each time the app resumes, since they can be revoked at any time
+        if (!hasPermissions(this)) {
+            ActivityCompat.requestPermissions(
+                this, permissions.toTypedArray(), permissionsRequestCode)
+        } else {
+            bindCameraUseCases()
+        }
+    }
+
+    override fun onRequestPermissionsResult(
+        requestCode: Int,
+        permissions: Array<out String>,
+        grantResults: IntArray
+    ) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        if (requestCode == permissionsRequestCode && hasPermissions(this)) {
+            bindCameraUseCases()
+        } else {
+            finish() // If we don't have the required permissions, we can't run
+        }
+    }
+
+    /** Convenience method used to check if all permissions required by this app are granted */
+    private fun hasPermissions(context: Context) = permissions.all {
+        ContextCompat.checkSelfPermission(context, it) == PackageManager.PERMISSION_GRANTED
+    }
+
+    companion object {
+        private val TAG = CameraActivity::class.java.simpleName
+    }
+}
diff --git a/tflite/src/main/res/drawable/ic_launcher_background.xml b/tflite/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..268681b
--- /dev/null
+++ b/tflite/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<vector
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="108dp"
+        android:width="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path android:fillColor="#008577"
+          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>
diff --git a/tflite/src/main/res/drawable/ic_shutter.xml b/tflite/src/main/res/drawable/ic_shutter.xml
new file mode 100644
index 0000000..ab352ba
--- /dev/null
+++ b/tflite/src/main/res/drawable/ic_shutter.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2019 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:drawable="@drawable/ic_shutter_pressed" />
+    <item android:state_focused="true" android:drawable="@drawable/ic_shutter_focused" />
+    <item android:drawable="@drawable/ic_shutter_normal" />
+</selector>
\ No newline at end of file
diff --git a/tflite/src/main/res/drawable/ic_shutter_focused.xml b/tflite/src/main/res/drawable/ic_shutter_focused.xml
new file mode 100644
index 0000000..fa852ac
--- /dev/null
+++ b/tflite/src/main/res/drawable/ic_shutter_focused.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2019 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="74"
+    android:viewportHeight="74">
+    <path android:fillColor="#FFFFFF" android:fillType="evenOdd"
+        android:pathData="M73.1,37C73.1,17.0637 56.9373,0.9 37,0.9C17.0627,0.9 0.9,17.0637 0.9,37C0.9,56.9373 17.0627,73.1 37,73.1C56.9373,73.1 73.1,56.9373 73.1,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+    <path android:fillColor="#58A0C4" android:fillType="evenOdd"
+        android:pathData="M67.4,37C67.4,53.7895 53.7895,67.4 37,67.4C20.2105,67.4 6.6,53.7895 6.6,37C6.6,20.2105 20.2105,6.6 37,6.6C53.7895,6.6 67.4,20.2105 67.4,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+</vector>
diff --git a/tflite/src/main/res/drawable/ic_shutter_normal.xml b/tflite/src/main/res/drawable/ic_shutter_normal.xml
new file mode 100644
index 0000000..25a10e1
--- /dev/null
+++ b/tflite/src/main/res/drawable/ic_shutter_normal.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2019 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="74"
+    android:viewportHeight="74">
+    <path android:fillColor="#FFFFFF" android:fillType="evenOdd"
+        android:pathData="M73.1,37C73.1,17.0637 56.9373,0.9 37,0.9C17.0627,0.9 0.9,17.0637 0.9,37C0.9,56.9373 17.0627,73.1 37,73.1C56.9373,73.1 73.1,56.9373 73.1,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+    <path android:fillColor="#CFD7DB" android:fillType="evenOdd"
+        android:pathData="M67.4,37C67.4,53.7895 53.7895,67.4 37,67.4C20.2105,67.4 6.6,53.7895 6.6,37C6.6,20.2105 20.2105,6.6 37,6.6C53.7895,6.6 67.4,20.2105 67.4,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+</vector>
diff --git a/tflite/src/main/res/drawable/ic_shutter_pressed.xml b/tflite/src/main/res/drawable/ic_shutter_pressed.xml
new file mode 100644
index 0000000..fa852ac
--- /dev/null
+++ b/tflite/src/main/res/drawable/ic_shutter_pressed.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2019 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="74"
+    android:viewportHeight="74">
+    <path android:fillColor="#FFFFFF" android:fillType="evenOdd"
+        android:pathData="M73.1,37C73.1,17.0637 56.9373,0.9 37,0.9C17.0627,0.9 0.9,17.0637 0.9,37C0.9,56.9373 17.0627,73.1 37,73.1C56.9373,73.1 73.1,56.9373 73.1,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+    <path android:fillColor="#58A0C4" android:fillType="evenOdd"
+        android:pathData="M67.4,37C67.4,53.7895 53.7895,67.4 37,67.4C20.2105,67.4 6.6,53.7895 6.6,37C6.6,20.2105 20.2105,6.6 37,6.6C53.7895,6.6 67.4,20.2105 67.4,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+</vector>
diff --git a/tflite/src/main/res/drawable/shape_rectangle.xml b/tflite/src/main/res/drawable/shape_rectangle.xml
new file mode 100644
index 0000000..5365e4c
--- /dev/null
+++ b/tflite/src/main/res/drawable/shape_rectangle.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners
+        android:radius="4dp"
+        android:topRightRadius="0dp"
+        android:bottomRightRadius="0dp"
+        android:bottomLeftRadius="0dp" />
+    <stroke
+        android:width="4dp"
+        android:color="@android:color/white" />
+    <solid android:color="@android:color/transparent"/>
+</shape>
\ No newline at end of file
diff --git a/tflite/src/main/res/layout-land/activity_camera.xml b/tflite/src/main/res/layout-land/activity_camera.xml
new file mode 100644
index 0000000..1cc66f1
--- /dev/null
+++ b/tflite/src/main/res/layout-land/activity_camera.xml
@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/camera_container"
+    android:background="@android:color/black"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.camera.view.PreviewView
+        android:id="@+id/view_finder"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <ImageView
+        android:id="@+id/image_predicted"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scaleType="centerCrop"
+        android:visibility="gone" />
+
+    <TextView
+        android:id="@+id/text_prediction"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/margin_xsmall"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        android:textAllCaps="true"
+        android:textAppearance="@style/TextAppearance.AppCompat.Display1"
+        android:text="@string/unknown" />
+
+    <View
+        android:id="@+id/box_prediction"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:background="@drawable/shape_rectangle"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <!-- Camera control buttons -->
+
+    <ImageButton
+        android:id="@+id/camera_capture_button"
+        android:layout_width="@dimen/round_button_large"
+        android:layout_height="@dimen/round_button_large"
+        android:layout_marginEnd="@dimen/shutter_button_margin"
+        android:scaleType="fitCenter"
+        android:background="@drawable/ic_shutter"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:contentDescription="@string/capture_button_alt" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/tflite/src/main/res/layout/activity_camera.xml b/tflite/src/main/res/layout/activity_camera.xml
new file mode 100644
index 0000000..c094f94
--- /dev/null
+++ b/tflite/src/main/res/layout/activity_camera.xml
@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/camera_container"
+    android:background="@android:color/black"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.camera.view.PreviewView
+        android:id="@+id/view_finder"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <ImageView
+        android:id="@+id/image_predicted"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scaleType="centerCrop"
+        android:visibility="gone" />
+
+    <TextView
+        android:id="@+id/text_prediction"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/margin_xsmall"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        android:textAllCaps="true"
+        android:textAppearance="@style/TextAppearance.AppCompat.Display1"
+        android:text="@string/unknown" />
+
+    <View
+        android:id="@+id/box_prediction"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:background="@drawable/shape_rectangle"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <!-- Camera control buttons -->
+
+    <ImageButton
+        android:id="@+id/camera_capture_button"
+        android:layout_width="@dimen/round_button_large"
+        android:layout_height="@dimen/round_button_large"
+        android:layout_marginBottom="@dimen/shutter_button_margin"
+        android:scaleType="fitCenter"
+        android:background="@drawable/ic_shutter"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:contentDescription="@string/capture_button_alt" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/tflite/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/tflite/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..fe90d56
--- /dev/null
+++ b/tflite/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2019 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/tflite/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/tflite/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..fe90d56
--- /dev/null
+++ b/tflite/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2019 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/tflite/src/main/res/mipmap-hdpi/ic_launcher.png b/tflite/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..edd7b36
--- /dev/null
+++ b/tflite/src/main/res/mipmap-hdpi/ic_launcher.png
diff --git a/tflite/src/main/res/mipmap-hdpi/ic_launcher_foreground.png b/tflite/src/main/res/mipmap-hdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..a050bf2
--- /dev/null
+++ b/tflite/src/main/res/mipmap-hdpi/ic_launcher_foreground.png
diff --git a/tflite/src/main/res/mipmap-hdpi/ic_launcher_round.png b/tflite/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..ec13a43
--- /dev/null
+++ b/tflite/src/main/res/mipmap-hdpi/ic_launcher_round.png
diff --git a/tflite/src/main/res/mipmap-mdpi/ic_launcher.png b/tflite/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..6fd4f91
--- /dev/null
+++ b/tflite/src/main/res/mipmap-mdpi/ic_launcher.png
diff --git a/tflite/src/main/res/mipmap-mdpi/ic_launcher_foreground.png b/tflite/src/main/res/mipmap-mdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..df81982
--- /dev/null
+++ b/tflite/src/main/res/mipmap-mdpi/ic_launcher_foreground.png
diff --git a/tflite/src/main/res/mipmap-mdpi/ic_launcher_round.png b/tflite/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..2616048
--- /dev/null
+++ b/tflite/src/main/res/mipmap-mdpi/ic_launcher_round.png
diff --git a/tflite/src/main/res/mipmap-xhdpi/ic_launcher.png b/tflite/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..fdae11d
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xhdpi/ic_launcher.png
diff --git a/tflite/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png b/tflite/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..667d566
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png
diff --git a/tflite/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/tflite/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..cb11f72
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xhdpi/ic_launcher_round.png
diff --git a/tflite/src/main/res/mipmap-xxhdpi/ic_launcher.png b/tflite/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..5d4fa36
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xxhdpi/ic_launcher.png
diff --git a/tflite/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png b/tflite/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..33dc1c6
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png
diff --git a/tflite/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/tflite/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..07d1393
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
diff --git a/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..675e313
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher.png
diff --git a/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png b/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..9f9808a
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png
diff --git a/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..54e07e0
--- /dev/null
+++ b/tflite/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
diff --git a/tflite/src/main/res/values/dimens.xml b/tflite/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..53948b6
--- /dev/null
+++ b/tflite/src/main/res/values/dimens.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<resources>
+    <dimen name="margin_xsmall">16dp</dimen>
+    <dimen name="margin_small">32dp</dimen>
+    <dimen name="margin_medium">48dp</dimen>
+    <dimen name="margin_large">64dp</dimen>
+    <dimen name="margin_xlarge">92dp</dimen>
+
+    <dimen name="spacing_small">4dp</dimen>
+    <dimen name="spacing_medium">8dp</dimen>
+    <dimen name="spacing_large">16dp</dimen>
+
+    <dimen name="round_button_small">32dp</dimen>
+    <dimen name="round_button_medium">64dp</dimen>
+    <dimen name="round_button_large">92dp</dimen>
+
+    <dimen name="shutter_button_margin">80dp</dimen>
+</resources>
\ No newline at end of file
diff --git a/tflite/src/main/res/values/strings.xml b/tflite/src/main/res/values/strings.xml
new file mode 100644
index 0000000..dbfb4c0
--- /dev/null
+++ b/tflite/src/main/res/values/strings.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<resources>
+    <string name="app_name">Camera Object Detector</string>
+    <string name="capture_button_alt">Capture</string>
+    <string name="unknown">UNKNOWN</string>
+</resources>
diff --git a/tflite/src/main/res/values/styles.xml b/tflite/src/main/res/values/styles.xml
new file mode 100644
index 0000000..8bfac62
--- /dev/null
+++ b/tflite/src/main/res/values/styles.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 Google LLC
+  ~
+  ~ 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
+  ~
+  ~     https://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.
+  -->
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
+        <item name="android:immersive">true</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowTranslucentStatus">true</item>
+        <item name="android:windowTranslucentNavigation">true</item>
+    </style>
+
+</resources>
diff --git a/utils/.gitignore b/utils/.gitignore
new file mode 100644
index 0000000..38c5875
--- /dev/null
+++ b/utils/.gitignore
@@ -0,0 +1,2 @@
+/build
+.idea
\ No newline at end of file
diff --git a/utils/README.md b/utils/README.md
new file mode 100644
index 0000000..7a10722
--- /dev/null
+++ b/utils/README.md
@@ -0,0 +1,2 @@
+Do not modify code under this folder outside of `CameraUtils`, it is copied
+automatically by `.github/scripts/copy_utils.sh`.
\ No newline at end of file
diff --git a/utils/build.gradle b/utils/build.gradle
new file mode 100644
index 0000000..1ef65fa
--- /dev/null
+++ b/utils/build.gradle
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.
+ */
+
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+
+android {
+    compileSdkVersion 29
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles 'consumer-rules.pro'
+    }
+
+    compileOptions {
+        sourceCompatibility rootProject.ext.java_version
+        targetCompatibility rootProject.ext.java_version
+    }
+
+    kotlinOptions {
+        jvmTarget = "$rootProject.ext.java_version"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+
+    // Kotlin lang
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.4'
+
+    // App compat and UI things
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
+
+    // EXIF Interface
+    implementation 'androidx.exifinterface:exifinterface:1.2.0'
+
+    // Unit testing
+    testImplementation 'androidx.test.ext:junit:1.1.1'
+    testImplementation 'androidx.test:rules:1.2.0'
+    testImplementation 'androidx.test:runner:1.2.0'
+    testImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    testImplementation 'org.robolectric:robolectric:4.3.1'
+
+    // Instrumented testing
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test:rules:1.2.0'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}
diff --git a/utils/src/main/AndroidManifest.xml b/utils/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..2e13c37
--- /dev/null
+++ b/utils/src/main/AndroidManifest.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2020 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
+  ~
+  ~     https://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.
+  -->
+<manifest package="com.example.android.camera.utils" />
diff --git a/utils/src/main/java/com/example/android/camera/utils/AutoFitSurfaceView.kt b/utils/src/main/java/com/example/android/camera/utils/AutoFitSurfaceView.kt
new file mode 100644
index 0000000..3d900d1
--- /dev/null
+++ b/utils/src/main/java/com/example/android/camera/utils/AutoFitSurfaceView.kt
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.
+ */
+
+package com.example.android.camera.utils
+
+import android.content.Context
+import android.util.AttributeSet
+import android.util.Log
+import android.view.SurfaceView
+import kotlin.math.roundToInt
+
+/**
+ * A [SurfaceView] that can be adjusted to a specified aspect ratio and
+ * performs center-crop transformation of input frames.
+ */
+class AutoFitSurfaceView @JvmOverloads constructor(
+        context: Context,
+        attrs: AttributeSet? = null,
+        defStyle: Int = 0
+) : SurfaceView(context, attrs, defStyle) {
+
+    private var aspectRatio = 0f
+
+    /**
+     * Sets the aspect ratio for this view. The size of the view will be
+     * measured based on the ratio calculated from the parameters.
+     *
+     * @param width  Camera resolution horizontal size
+     * @param height Camera resolution vertical size
+     */
+    fun setAspectRatio(width: Int, height: Int) {
+        require(width > 0 && height > 0) { "Size cannot be negative" }
+        aspectRatio = width.toFloat() / height.toFloat()
+        holder.setFixedSize(width, height)
+        requestLayout()
+    }
+
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+        val width = MeasureSpec.getSize(widthMeasureSpec)
+        val height = MeasureSpec.getSize(heightMeasureSpec)
+        if (aspectRatio == 0f) {
+            setMeasuredDimension(width, height)
+        } else {
+
+            // Performs center-crop transformation of the camera frames
+            val newWidth: Int
+            val newHeight: Int
+            val actualRatio = if (width > height) aspectRatio else 1f / aspectRatio
+            if (width < height * actualRatio) {
+                newHeight = height
+                newWidth = (height * actualRatio).roundToInt()
+            } else {
+                newWidth = width
+                newHeight = (width / actualRatio).roundToInt()
+            }
+
+            Log.d(TAG, "Measured dimensions set: $newWidth x $newHeight")
+            setMeasuredDimension(newWidth, newHeight)
+        }
+    }
+
+    companion object {
+        private val TAG = AutoFitSurfaceView::class.java.simpleName
+    }
+}
diff --git a/utils/src/main/java/com/example/android/camera/utils/CameraSizes.kt b/utils/src/main/java/com/example/android/camera/utils/CameraSizes.kt
new file mode 100644
index 0000000..6db01d3
--- /dev/null
+++ b/utils/src/main/java/com/example/android/camera/utils/CameraSizes.kt
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.camera.utils
+
+import android.graphics.Point
+import android.hardware.camera2.CameraCharacteristics
+import android.hardware.camera2.params.StreamConfigurationMap
+import android.util.Size
+import android.view.Display
+import kotlin.math.max
+import kotlin.math.min
+
+/** Helper class used to pre-compute shortest and longest sides of a [Size] */
+class SmartSize(width: Int, height: Int) {
+    var size = Size(width, height)
+    var long = max(size.width, size.height)
+    var short = min(size.width, size.height)
+    override fun toString() = "SmartSize(${long}x${short})"
+}
+
+/** Standard High Definition size for pictures and video */
+val SIZE_1080P: SmartSize = SmartSize(1920, 1080)
+
+/** Returns a [SmartSize] object for the given [Display] */
+fun getDisplaySmartSize(display: Display): SmartSize {
+    val outPoint = Point()
+    display.getRealSize(outPoint)
+    return SmartSize(outPoint.x, outPoint.y)
+}
+
+/**
+ * Returns the largest available PREVIEW size. For more information, see:
+ * https://d.android.com/reference/android/hardware/camera2/CameraDevice and
+ * https://developer.android.com/reference/android/hardware/camera2/params/StreamConfigurationMap
+ */
+fun <T>getPreviewOutputSize(
+        display: Display,
+        characteristics: CameraCharacteristics,
+        targetClass: Class<T>,
+        format: Int? = null
+): Size {
+
+    // Find which is smaller: screen or 1080p
+    val screenSize = getDisplaySmartSize(display)
+    val hdScreen = screenSize.long >= SIZE_1080P.long || screenSize.short >= SIZE_1080P.short
+    val maxSize = if (hdScreen) SIZE_1080P else screenSize
+
+    // If image format is provided, use it to determine supported sizes; else use target class
+    val config = characteristics.get(
+            CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)!!
+    if (format == null)
+        assert(StreamConfigurationMap.isOutputSupportedFor(targetClass))
+    else
+        assert(config.isOutputSupportedFor(format))
+    val allSizes = if (format == null)
+        config.getOutputSizes(targetClass) else config.getOutputSizes(format)
+
+    // Get available sizes and sort them by area from largest to smallest
+    val validSizes = allSizes
+            .sortedWith(compareBy { it.height * it.width })
+            .map { SmartSize(it.width, it.height) }.reversed()
+
+    // Then, get the largest output size that is smaller or equal than our max size
+    return validSizes.first { it.long <= maxSize.long && it.short <= maxSize.short }.size
+}
\ No newline at end of file
diff --git a/utils/src/main/java/com/example/android/camera/utils/ExifUtils.kt b/utils/src/main/java/com/example/android/camera/utils/ExifUtils.kt
new file mode 100644
index 0000000..561c14b
--- /dev/null
+++ b/utils/src/main/java/com/example/android/camera/utils/ExifUtils.kt
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.
+ */
+
+package com.example.android.camera.utils
+
+import android.graphics.Bitmap
+import android.graphics.Matrix
+import android.util.Log
+import androidx.exifinterface.media.ExifInterface
+
+private const val TAG: String = "ExifUtils"
+
+/** Transforms rotation and mirroring information into one of the [ExifInterface] constants */
+fun computeExifOrientation(rotationDegrees: Int, mirrored: Boolean) = when {
+    rotationDegrees == 0 && !mirrored -> ExifInterface.ORIENTATION_NORMAL
+    rotationDegrees == 0 && mirrored -> ExifInterface.ORIENTATION_FLIP_HORIZONTAL
+    rotationDegrees == 180 && !mirrored -> ExifInterface.ORIENTATION_ROTATE_180
+    rotationDegrees == 180 && mirrored -> ExifInterface.ORIENTATION_FLIP_VERTICAL
+    rotationDegrees == 270 && mirrored -> ExifInterface.ORIENTATION_TRANSVERSE
+    rotationDegrees == 90 && !mirrored -> ExifInterface.ORIENTATION_ROTATE_90
+    rotationDegrees == 90 && mirrored -> ExifInterface.ORIENTATION_TRANSPOSE
+    rotationDegrees == 270 && mirrored -> ExifInterface.ORIENTATION_ROTATE_270
+    rotationDegrees == 270 && !mirrored -> ExifInterface.ORIENTATION_TRANSVERSE
+    else -> ExifInterface.ORIENTATION_UNDEFINED
+}
+
+/**
+ * Helper function used to convert an EXIF orientation enum into a transformation matrix
+ * that can be applied to a bitmap.
+ *
+ * @return matrix - Transformation required to properly display [Bitmap]
+ */
+fun decodeExifOrientation(exifOrientation: Int): Matrix {
+    val matrix = Matrix()
+
+    // Apply transformation corresponding to declared EXIF orientation
+    when (exifOrientation) {
+        ExifInterface.ORIENTATION_NORMAL -> Unit
+        ExifInterface.ORIENTATION_UNDEFINED -> Unit
+        ExifInterface.ORIENTATION_ROTATE_90 -> matrix.postRotate(90F)
+        ExifInterface.ORIENTATION_ROTATE_180 -> matrix.postRotate(180F)
+        ExifInterface.ORIENTATION_ROTATE_270 -> matrix.postRotate(270F)
+        ExifInterface.ORIENTATION_FLIP_HORIZONTAL -> matrix.postScale(-1F, 1F)
+        ExifInterface.ORIENTATION_FLIP_VERTICAL -> matrix.postScale(1F, -1F)
+        ExifInterface.ORIENTATION_TRANSPOSE -> {
+            matrix.postScale(-1F, 1F)
+            matrix.postRotate(270F)
+        }
+        ExifInterface.ORIENTATION_TRANSVERSE -> {
+            matrix.postScale(-1F, 1F)
+            matrix.postRotate(90F)
+        }
+
+        // Error out if the EXIF orientation is invalid
+        else -> Log.e(TAG, "Invalid orientation: $exifOrientation")
+    }
+
+    // Return the resulting matrix
+    return matrix
+}
diff --git a/utils/src/main/java/com/example/android/camera/utils/GenericListAdapter.kt b/utils/src/main/java/com/example/android/camera/utils/GenericListAdapter.kt
new file mode 100644
index 0000000..a55af27
--- /dev/null
+++ b/utils/src/main/java/com/example/android/camera/utils/GenericListAdapter.kt
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.
+ */
+
+package com.example.android.camera.utils
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+
+/** Type helper used for the callback triggered once our view has been bound */
+typealias BindCallback<T> = (view: View, data: T, position: Int) -> Unit
+
+/** List adapter for generic types, intended used for small-medium lists of data */
+class GenericListAdapter<T>(
+        private val dataset: List<T>,
+        private val itemLayoutId: Int? = null,
+        private val itemViewFactory: (() -> View)? = null,
+        private val onBind: BindCallback<T>
+) : RecyclerView.Adapter<GenericListAdapter.GenericListViewHolder>() {
+
+    class GenericListViewHolder(val view: View) : RecyclerView.ViewHolder(view)
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = GenericListViewHolder(when {
+        itemViewFactory != null -> itemViewFactory.invoke()
+        itemLayoutId != null -> {
+            LayoutInflater.from(parent.context)
+                    .inflate(itemLayoutId, parent, false)
+        }
+        else -> {
+            throw IllegalStateException(
+                    "Either the layout ID or the view factory need to be non-null")
+        }
+    })
+
+    override fun onBindViewHolder(holder: GenericListViewHolder, position: Int) {
+        if (position < 0 || position > dataset.size) return
+        onBind(holder.view, dataset[position], position)
+    }
+
+    override fun getItemCount() = dataset.size
+}
\ No newline at end of file
diff --git a/utils/src/main/java/com/example/android/camera/utils/OrientationLiveData.kt b/utils/src/main/java/com/example/android/camera/utils/OrientationLiveData.kt
new file mode 100644
index 0000000..f9d9a47
--- /dev/null
+++ b/utils/src/main/java/com/example/android/camera/utils/OrientationLiveData.kt
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.
+ */
+
+package com.example.android.camera.utils
+
+import android.content.Context
+import android.hardware.camera2.CameraCharacteristics
+import android.view.OrientationEventListener
+import android.view.Surface
+import androidx.lifecycle.LiveData
+
+
+/**
+ * Calculates closest 90-degree orientation to compensate for the device
+ * rotation relative to sensor orientation, i.e., allows user to see camera
+ * frames with the expected orientation.
+ */
+class OrientationLiveData(
+        context: Context,
+        characteristics: CameraCharacteristics
+): LiveData<Int>() {
+
+    private val listener = object : OrientationEventListener(context.applicationContext) {
+        override fun onOrientationChanged(orientation: Int) {
+            val rotation = when {
+                orientation <= 45 -> Surface.ROTATION_0
+                orientation <= 135 -> Surface.ROTATION_90
+                orientation <= 225 -> Surface.ROTATION_180
+                orientation <= 315 -> Surface.ROTATION_270
+                else -> Surface.ROTATION_0
+            }
+            val relative = computeRelativeRotation(characteristics, rotation)
+            if (relative != value) postValue(relative)
+        }
+    }
+
+    override fun onActive() {
+        super.onActive()
+        listener.enable()
+    }
+
+    override fun onInactive() {
+        super.onInactive()
+        listener.disable()
+    }
+
+    companion object {
+
+        /**
+         * Computes rotation required to transform from the camera sensor orientation to the
+         * device's current orientation in degrees.
+         *
+         * @param characteristics the [CameraCharacteristics] to query for the sensor orientation.
+         * @param surfaceRotation the current device orientation as a Surface constant
+         * @return the relative rotation from the camera sensor to the current device orientation.
+         */
+        @JvmStatic
+        private fun computeRelativeRotation(
+                characteristics: CameraCharacteristics,
+                surfaceRotation: Int
+        ): Int {
+            val sensorOrientationDegrees =
+                    characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION)!!
+
+            val deviceOrientationDegrees = when (surfaceRotation) {
+                Surface.ROTATION_0 -> 0
+                Surface.ROTATION_90 -> 90
+                Surface.ROTATION_180 -> 180
+                Surface.ROTATION_270 -> 270
+                else -> 0
+            }
+
+            // Reverse device orientation for front-facing cameras
+            val sign = if (characteristics.get(CameraCharacteristics.LENS_FACING) ==
+                    CameraCharacteristics.LENS_FACING_FRONT) 1 else -1
+
+            // Calculate desired JPEG orientation relative to camera orientation to make
+            // the image upright relative to the device orientation
+            return (sensorOrientationDegrees - (deviceOrientationDegrees * sign) + 360) % 360
+        }
+    }
+}
diff --git a/utils/src/main/java/com/example/android/camera/utils/Yuv.kt b/utils/src/main/java/com/example/android/camera/utils/Yuv.kt
new file mode 100644
index 0000000..c476ad0
--- /dev/null
+++ b/utils/src/main/java/com/example/android/camera/utils/Yuv.kt
@@ -0,0 +1,191 @@
+package com.example.android.camera.utils
+
+import android.graphics.ImageFormat
+import android.media.Image
+import androidx.annotation.IntDef
+import java.nio.ByteBuffer
+
+/*
+This file is converted from part of https://github.com/gordinmitya/yuv2buf.
+Follow the link to find demo app, performance benchmarks and unit tests.
+
+Intro to YUV image formats:
+YUV_420_888 - is a generic format that can be represented as I420, YV12, NV21, and NV12.
+420 means that for each 4 luminosity pixels we have 2 chroma pixels: U and V.
+
+* I420 format represents an image as Y plane followed by U then followed by V plane
+    without chroma channels interleaving.
+    For example:
+    Y Y Y Y
+    Y Y Y Y
+    U U V V
+
+* NV21 format represents an image as Y plane followed by V and U interleaved. First V then U.
+    For example:
+    Y Y Y Y
+    Y Y Y Y
+    V U V U
+
+* YV12 and NV12 are the same as previous formats but with swapped order of V and U. (U then V)
+
+Visualization of these 4 formats:
+https://user-images.githubusercontent.com/9286092/89119601-4f6f8100-d4b8-11ea-9a51-2765f7e513c2.jpg
+
+It's guaranteed that image.getPlanes() always returns planes in order Y U V for YUV_420_888.
+https://developer.android.com/reference/android/graphics/ImageFormat#YUV_420_888
+
+Because I420 and NV21 are more widely supported (RenderScript, OpenCV, MNN)
+the conversion is done into these formats.
+
+More about each format: https://www.fourcc.org/yuv.php
+*/
+
+@kotlin.annotation.Retention(AnnotationRetention.SOURCE)
+@IntDef(ImageFormat.NV21, ImageFormat.YUV_420_888)
+annotation class YuvType
+
+class YuvByteBuffer(image: Image, dstBuffer: ByteBuffer? = null) {
+    @YuvType
+    val type: Int
+    val buffer: ByteBuffer
+
+    init {
+        val wrappedImage = ImageWrapper(image)
+
+        type = if (wrappedImage.u.pixelStride == 1) {
+            ImageFormat.YUV_420_888
+        } else {
+            ImageFormat.NV21
+        }
+        val size = image.width * image.height * 3 / 2
+        buffer = if (
+            dstBuffer == null || dstBuffer.capacity() < size ||
+            dstBuffer.isReadOnly || !dstBuffer.isDirect
+        ) {
+            ByteBuffer.allocateDirect(size) }
+        else {
+            dstBuffer
+        }
+        buffer.rewind()
+
+        removePadding(wrappedImage)
+    }
+
+    // Input buffers are always direct as described in
+    // https://developer.android.com/reference/android/media/Image.Plane#getBuffer()
+    private fun removePadding(image: ImageWrapper) {
+        val sizeLuma = image.y.width * image.y.height
+        val sizeChroma = image.u.width * image.u.height
+        if (image.y.rowStride > image.y.width) {
+            removePaddingCompact(image.y, buffer, 0)
+        } else {
+            buffer.position(0)
+            buffer.put(image.y.buffer)
+        }
+        if (type == ImageFormat.YUV_420_888) {
+            if (image.u.rowStride > image.u.width) {
+                removePaddingCompact(image.u, buffer, sizeLuma)
+                removePaddingCompact(image.v, buffer, sizeLuma + sizeChroma)
+            } else {
+                buffer.position(sizeLuma)
+                buffer.put(image.u.buffer)
+                buffer.position(sizeLuma + sizeChroma)
+                buffer.put(image.v.buffer)
+            }
+        } else {
+            if (image.u.rowStride > image.u.width * 2) {
+                removePaddingNotCompact(image, buffer, sizeLuma)
+            } else {
+                buffer.position(sizeLuma)
+                var uv = image.v.buffer
+                val properUVSize = image.v.height * image.v.rowStride - 1
+                if (uv.capacity() > properUVSize) {
+                    uv = clipBuffer(image.v.buffer, 0, properUVSize)
+                }
+                buffer.put(uv)
+                val lastOne = image.u.buffer[image.u.buffer.capacity() - 1]
+                buffer.put(buffer.capacity() - 1, lastOne)
+            }
+        }
+        buffer.rewind()
+    }
+
+    private fun removePaddingCompact(
+        plane: PlaneWrapper,
+        dst: ByteBuffer,
+        offset: Int
+    ) {
+        require(plane.pixelStride == 1) {
+            "use removePaddingCompact with pixelStride == 1"
+        }
+
+        val src = plane.buffer
+        val rowStride = plane.rowStride
+        var row: ByteBuffer
+        dst.position(offset)
+        for (i in 0 until plane.height) {
+            row = clipBuffer(src, i * rowStride, plane.width)
+            dst.put(row)
+        }
+    }
+
+    private fun removePaddingNotCompact(
+        image: ImageWrapper,
+        dst: ByteBuffer,
+        offset: Int
+    ) {
+        require(image.u.pixelStride == 2) {
+            "use removePaddingNotCompact pixelStride == 2"
+        }
+        val width = image.u.width
+        val height = image.u.height
+        val rowStride = image.u.rowStride
+        var row: ByteBuffer
+        dst.position(offset)
+        for (i in 0 until height - 1) {
+            row = clipBuffer(image.v.buffer, i * rowStride, width * 2)
+            dst.put(row)
+        }
+        row = clipBuffer(image.u.buffer, (height - 1) * rowStride - 1, width * 2)
+        dst.put(row)
+    }
+
+    private fun clipBuffer(buffer: ByteBuffer, start: Int, size: Int): ByteBuffer {
+        val duplicate = buffer.duplicate()
+        duplicate.position(start)
+        duplicate.limit(start + size)
+        return duplicate.slice()
+    }
+
+    private class ImageWrapper(image:Image) {
+        val width= image.width
+        val height = image.height
+        val y = PlaneWrapper(width, height, image.planes[0])
+        val u = PlaneWrapper(width / 2, height / 2, image.planes[1])
+        val v = PlaneWrapper(width / 2, height / 2, image.planes[2])
+
+        // Check this is a supported image format
+        // https://developer.android.com/reference/android/graphics/ImageFormat#YUV_420_888
+        init {
+            require(y.pixelStride == 1) {
+                "Pixel stride for Y plane must be 1 but got ${y.pixelStride} instead."
+            }
+            require(u.pixelStride == v.pixelStride && u.rowStride == v.rowStride) {
+                "U and V planes must have the same pixel and row strides " +
+                "but got pixel=${u.pixelStride} row=${u.rowStride} for U " +
+                "and pixel=${v.pixelStride} and row=${v.rowStride} for V"
+            }
+            require(u.pixelStride == 1 || u.pixelStride == 2) {
+                "Supported" + " pixel strides for U and V planes are 1 and 2"
+            }
+        }
+    }
+
+    private class PlaneWrapper(width: Int, height: Int, plane: Image.Plane) {
+        val width = width
+        val height = height
+        val buffer: ByteBuffer = plane.buffer
+        val rowStride = plane.rowStride
+        val pixelStride = plane.pixelStride
+    }
+}
\ No newline at end of file
diff --git a/utils/src/main/java/com/example/android/camera/utils/YuvToRgbConverter.kt b/utils/src/main/java/com/example/android/camera/utils/YuvToRgbConverter.kt
new file mode 100644
index 0000000..8dcd559
--- /dev/null
+++ b/utils/src/main/java/com/example/android/camera/utils/YuvToRgbConverter.kt
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.
+ */
+
+package com.example.android.camera.utils
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.graphics.ImageFormat
+import android.media.Image
+import android.renderscript.Allocation
+import android.renderscript.Element
+import android.renderscript.RenderScript
+import android.renderscript.ScriptIntrinsicYuvToRGB
+import android.renderscript.Type
+import java.nio.ByteBuffer
+
+/**
+ * Helper class used to convert a [Image] object from
+ * [ImageFormat.YUV_420_888] format to an RGB [Bitmap] object, it has equivalent
+ * functionality to https://github
+ * .com/androidx/androidx/blob/androidx-main/camera/camera-core/src/main/java/androidx/camera/core/ImageYuvToRgbConverter.java
+ *
+ * NOTE: This has been tested in a limited number of devices and is not
+ * considered production-ready code. It was created for illustration purposes,
+ * since this is not an efficient camera pipeline due to the multiple copies
+ * required to convert each frame. For example, this
+ * implementation
+ * (https://stackoverflow.com/questions/52726002/camera2-captured-picture-conversion-from-yuv-420-888-to-nv21/52740776#52740776)
+ * might have better performance.
+ */
+class YuvToRgbConverter(context: Context) {
+    private val rs = RenderScript.create(context)
+    private val scriptYuvToRgb =
+        ScriptIntrinsicYuvToRGB.create(rs, Element.U8_4(rs))
+
+    // Do not add getters/setters functions to these private variables
+    // because yuvToRgb() assume they won't be modified elsewhere
+    private var yuvBits: ByteBuffer? = null
+    private var bytes: ByteArray = ByteArray(0)
+    private var inputAllocation: Allocation? = null
+    private var outputAllocation: Allocation? = null
+
+    @Synchronized
+    fun yuvToRgb(image: Image, output: Bitmap) {
+        val yuvBuffer = YuvByteBuffer(image, yuvBits)
+        yuvBits = yuvBuffer.buffer
+
+        if (needCreateAllocations(image, yuvBuffer)) {
+            val yuvType = Type.Builder(rs, Element.U8(rs))
+                .setX(image.width)
+                .setY(image.height)
+                .setYuvFormat(yuvBuffer.type)
+            inputAllocation = Allocation.createTyped(
+                rs,
+                yuvType.create(),
+                Allocation.USAGE_SCRIPT
+            )
+            bytes = ByteArray(yuvBuffer.buffer.capacity())
+            val rgbaType = Type.Builder(rs, Element.RGBA_8888(rs))
+                .setX(image.width)
+                .setY(image.height)
+            outputAllocation = Allocation.createTyped(
+                rs,
+                rgbaType.create(),
+                Allocation.USAGE_SCRIPT
+            )
+        }
+
+        yuvBuffer.buffer.get(bytes)
+        inputAllocation!!.copyFrom(bytes)
+
+        // Convert NV21 or YUV_420_888 format to RGB
+        inputAllocation!!.copyFrom(bytes)
+        scriptYuvToRgb.setInput(inputAllocation)
+        scriptYuvToRgb.forEach(outputAllocation)
+        outputAllocation!!.copyTo(output)
+    }
+
+    private fun needCreateAllocations(image: Image, yuvBuffer: YuvByteBuffer): Boolean {
+        return (inputAllocation == null ||               // the very 1st call
+            inputAllocation!!.type.x != image.width ||   // image size changed
+            inputAllocation!!.type.y != image.height ||
+            inputAllocation!!.type.yuv != yuvBuffer.type || // image format changed
+            bytes.size == yuvBuffer.buffer.capacity())
+    }
+}
diff --git a/utils/src/main/res/drawable/ic_shutter.xml b/utils/src/main/res/drawable/ic_shutter.xml
new file mode 100644
index 0000000..9bb91ab
--- /dev/null
+++ b/utils/src/main/res/drawable/ic_shutter.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 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
+  ~
+  ~     https://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.
+  -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:drawable="@drawable/ic_shutter_pressed" />
+    <item android:state_focused="true" android:drawable="@drawable/ic_shutter_focused" />
+    <item android:drawable="@drawable/ic_shutter_normal" />
+</selector>
\ No newline at end of file
diff --git a/utils/src/main/res/drawable/ic_shutter_focused.xml b/utils/src/main/res/drawable/ic_shutter_focused.xml
new file mode 100644
index 0000000..9bf521d
--- /dev/null
+++ b/utils/src/main/res/drawable/ic_shutter_focused.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 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
+  ~
+  ~     https://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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="74"
+    android:viewportHeight="74">
+    <path android:fillColor="#FFFFFF" android:fillType="evenOdd"
+        android:pathData="M73.1,37C73.1,17.0637 56.9373,0.9 37,0.9C17.0627,0.9 0.9,17.0637 0.9,37C0.9,56.9373 17.0627,73.1 37,73.1C56.9373,73.1 73.1,56.9373 73.1,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+    <path android:fillColor="#58A0C4" android:fillType="evenOdd"
+        android:pathData="M67.4,37C67.4,53.7895 53.7895,67.4 37,67.4C20.2105,67.4 6.6,53.7895 6.6,37C6.6,20.2105 20.2105,6.6 37,6.6C53.7895,6.6 67.4,20.2105 67.4,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+</vector>
diff --git a/utils/src/main/res/drawable/ic_shutter_normal.xml b/utils/src/main/res/drawable/ic_shutter_normal.xml
new file mode 100644
index 0000000..cb50026
--- /dev/null
+++ b/utils/src/main/res/drawable/ic_shutter_normal.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 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
+  ~
+  ~     https://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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="74"
+    android:viewportHeight="74">
+    <path android:fillColor="#FFFFFF" android:fillType="evenOdd"
+        android:pathData="M73.1,37C73.1,17.0637 56.9373,0.9 37,0.9C17.0627,0.9 0.9,17.0637 0.9,37C0.9,56.9373 17.0627,73.1 37,73.1C56.9373,73.1 73.1,56.9373 73.1,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+    <path android:fillColor="#CFD7DB" android:fillType="evenOdd"
+        android:pathData="M67.4,37C67.4,53.7895 53.7895,67.4 37,67.4C20.2105,67.4 6.6,53.7895 6.6,37C6.6,20.2105 20.2105,6.6 37,6.6C53.7895,6.6 67.4,20.2105 67.4,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+</vector>
diff --git a/utils/src/main/res/drawable/ic_shutter_pressed.xml b/utils/src/main/res/drawable/ic_shutter_pressed.xml
new file mode 100644
index 0000000..9bf521d
--- /dev/null
+++ b/utils/src/main/res/drawable/ic_shutter_pressed.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2020 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
+  ~
+  ~     https://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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="74"
+    android:viewportHeight="74">
+    <path android:fillColor="#FFFFFF" android:fillType="evenOdd"
+        android:pathData="M73.1,37C73.1,17.0637 56.9373,0.9 37,0.9C17.0627,0.9 0.9,17.0637 0.9,37C0.9,56.9373 17.0627,73.1 37,73.1C56.9373,73.1 73.1,56.9373 73.1,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+    <path android:fillColor="#58A0C4" android:fillType="evenOdd"
+        android:pathData="M67.4,37C67.4,53.7895 53.7895,67.4 37,67.4C20.2105,67.4 6.6,53.7895 6.6,37C6.6,20.2105 20.2105,6.6 37,6.6C53.7895,6.6 67.4,20.2105 67.4,37"
+        android:strokeColor="#00000000" android:strokeWidth="1"/>
+</vector>