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Camera2Extensions: Initial commit
Change-Id: I571f12252ce4e0b9fbbd69d6f1a96ac03c76eb88
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‎Camera2Extensions/.gitignore

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utils/

‎Camera2Extensions/.google/packaging.yaml

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# Copyright (C) 2021 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# GOOGLE SAMPLE PACKAGING DATA
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#
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# This file is used by Google as part of our samples packaging process.
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# End users may safely ignore this file. It has no relevance to other systems.
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---
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status: PUBLISHED
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technologies: [Android]
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categories: [Camera]
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languages: [Kotlin]
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solutions: [Mobile]
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github: android/camera-samples
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level: INTERMEDIATE
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apiRefs:
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- android:android.hardware.camera2
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license: apache2

‎Camera2Extensions/README.md

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Android Camera2Extensions Sample
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===========================
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This sample captures [Camera2][1] extensions generated images via the Camera2 API
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including displaying a camera preview and using repeating capture requests.
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This sample application can only be built and used on Android SDK 31+.
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Introduction
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------------
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This sample displays a live camera preview in TextureView and allows the user to
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capture a still image using the Camera Extension [API][2]
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[1]: https://developer.android.com/reference/android/hardware/camera2/package-summary.html
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[2]: https://developer.android.com/reference/android/hardware/camera2/CameraExtensionCharacteristics
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Pre-requisites
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--------------
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- Android SDK 31+
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- Android Studio 3.6+
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- Device with CameraX/Camera2 extensions
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Getting Started
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---------------
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This sample uses the Gradle build system. To build this project, use the
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"gradlew build" command or use "Import Project" in Android Studio.
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Support
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-------
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- Stack Overflow: http://stackoverflow.com/questions/tagged/android
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If you've found an error in this sample, please file an issue:
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https://github.com/android/camera-samples
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Patches are encouraged, and may be submitted by forking this project and
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submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.

‎Camera2Extensions/app/build.gradle

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/*
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* Copyright 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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apply plugin: 'com.android.application'
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apply plugin: 'kotlin-android'
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apply plugin: 'kotlin-kapt'
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apply plugin: 'kotlin-android-extensions'
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apply plugin: "androidx.navigation.safeargs"
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android {
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compileSdkVersion 'android-S'
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defaultConfig {
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testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
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applicationId "com.android.example.camera2.extensions"
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minSdkVersion 31
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targetSdkVersion 31
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versionCode 1
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versionName "1.0.0"
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}
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compileOptions {
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sourceCompatibility java_version
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targetCompatibility rootProject.ext.java_version
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}
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kotlinOptions {
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jvmTarget = "$rootProject.ext.java_version"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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// Set the source of tests to same for both Unit and Instrumented tests
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sourceSets {
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String sharedTestDir = 'src/test/java'
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test {
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java.srcDir sharedTestDir
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}
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androidTest {
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java.srcDir sharedTestDir
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}
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}
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buildToolsVersion '30.0.3'
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viewBinding {
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enabled true
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}
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}
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dependencies {
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implementation project(':utils')
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implementation "androidx.activity:activity-ktx:1.2.0"
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implementation "androidx.fragment:fragment:1.3.0"
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// Kotlin lang
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implementation 'androidx.core:core-ktx:1.3.0'
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implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
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implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.4'
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// App compat and UI things
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implementation 'androidx.appcompat:appcompat:1.1.0'
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implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.2.0'
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implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
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// Navigation library
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def nav_version = "2.2.2"
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implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
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implementation "androidx.navigation:navigation-ui-ktx:$nav_version"
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// Unit testing
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testImplementation 'androidx.test.ext:junit:1.1.1'
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testImplementation 'androidx.test:rules:1.2.0'
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testImplementation 'androidx.test:runner:1.2.0'
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testImplementation 'androidx.test.espresso:espresso-core:3.2.0'
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testImplementation "org.robolectric:robolectric:4.3.1"
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// Instrumented testing
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androidTestImplementation 'androidx.test.ext:junit:1.1.1'
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androidTestImplementation 'androidx.test:rules:1.2.0'
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androidTestImplementation 'androidx.test:runner:1.2.0'
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androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
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}

‎Camera2Extensions/app/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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~ Copyright 2021 The Android Open Source Project
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~
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~ Licensed under the Apache License, Version 2.0 (the "License");
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~ you may not use this file except in compliance with the License.
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~ You may obtain a copy of the License at
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~
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~ https://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing, software
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~ distributed under the License is distributed on an "AS IS" BASIS,
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~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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~ See the License for the specific language governing permissions and
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~ limitations under the License.
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-->
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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package="com.example.android.camera2.extensions">
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<!-- Permission declarations -->
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<uses-permission android:name="android.permission.CAMERA" />
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<uses-feature android:name="android.hardware.camera.any" />
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<application
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android:allowBackup="true"
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android:label="@string/app_name"
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android:icon="@drawable/ic_launcher"
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android:exported="true"
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tools:ignore="AllowBackup,GoogleAppIndexingWarning">
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<activity
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android:name="com.example.android.camera2.extensions.CameraActivity"
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android:exported="true"
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android:clearTaskOnLaunch="true"
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android:theme="@style/AppTheme">
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<!-- Main app intent filter -->
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎Camera2Extensions/app/src/main/java/com/example/android/camera2/extensions/CameraActivity.kt

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/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.camera2.extensions
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import android.Manifest
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import android.content.pm.PackageManager
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import android.os.Bundle
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import android.view.View
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import android.widget.FrameLayout
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import android.widget.Toast
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import androidx.appcompat.app.AppCompatActivity
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import androidx.activity.result.contract.ActivityResultContracts
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import androidx.core.content.ContextCompat
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/*
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* This is the launching point for the camera extension app where the camera fragment container
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* is delayed to allow the UI to settle. All of the camera extension code can be found in
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* "CameraFragment".
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*/
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class CameraActivity : AppCompatActivity() {
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private lateinit var container: FrameLayout
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private val requestPermissionLauncher =
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registerForActivityResult(
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ActivityResultContracts.RequestPermission()
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) { isGranted: Boolean ->
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if (isGranted) {
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// Before setting full screen flags, we must wait a bit to let UI settle; otherwise,
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// we may be trying to set app to immersive mode before it's ready and the flags do
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// not stick
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container.postDelayed({container.systemUiVisibility = FLAGS_FULLSCREEN},
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IMMERSIVE_FLAG_TIMEOUT)
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} else {
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Toast.makeText(this, R.string.permission_required,
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Toast.LENGTH_SHORT).show()
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finish()
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}
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}
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_camera)
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container = findViewById(R.id.fragment_container)
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}
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override fun onResume() {
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super.onResume()
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if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) ==
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PackageManager.PERMISSION_GRANTED) {
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container.postDelayed({container.systemUiVisibility = FLAGS_FULLSCREEN},
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IMMERSIVE_FLAG_TIMEOUT)
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} else {
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requestPermissionLauncher.launch(Manifest.permission.CAMERA)
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}
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}
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companion object {
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/** Combination of all flags required to put activity into immersive mode */
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const val FLAGS_FULLSCREEN =
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View.SYSTEM_UI_FLAG_LOW_PROFILE or
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View.SYSTEM_UI_FLAG_FULLSCREEN or
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View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
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View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
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/** Milliseconds used for UI animations */
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private const val IMMERSIVE_FLAG_TIMEOUT = 500L
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}
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}

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