TVM android camera demo (#5005)

apps/android_camera/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+/app/src/main/jni/jni_helper_func.h
+/app/src/main/jni/org_apache_tvm_native_c_api.cc
+/app/src/main/jni/org_apache_tvm_native_c_api.h
+/app/src/main/obj/
+gradle/
+app/src/main/assets/models

apps/android_camera/README.md

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+[//]: # Licensed to the Apache Software Foundation (ASF) under one
+[//]: # or more contributor license agreements.  See the NOTICE file
+[//]: # distributed with this work for additional information
+[//]: # regarding copyright ownership.  The ASF licenses this file
+[//]: # to you under the Apache License, Version 2.0 (the
+[//]: # "License"); you may not use this file except in compliance
+[//]: # with the License.  You may obtain a copy of the License at
+[//]: #
+[//]: #   http://www.apache.org/licenses/LICENSE-2.0
+[//]: #
+[//]: # Unless required by applicable law or agreed to in writing,
+[//]: # software distributed under the License is distributed on an
+[//]: # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+[//]: # KIND, either express or implied.  See the License for the
+[//]: # specific language governing permissions and limitations
+[//]: # under the License.
+
+Android Camera Demo Sample App
+==============================
+
+The Android Camera Demo Sample App provides a basic implementation of an Android
+app that uses the tvm runtime to perform image classification in real time.
+
+Converting Models
+-----------------
+
+The `models/prepare_models.py` script provides a example flow for dumping model
+parameter files for use by the app.

apps/android_camera/app/build.gradle

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+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+apply plugin: 'com.android.application'
+
+task buildJni(type: Exec, description: 'Build JNI libs') {
+    commandLine 'sh', 'src/main/jni/build.sh'
+}
+
+tasks.withType(JavaCompile) {
+    //compileTask -> compileTask.dependsOn buildJni
+}
+
+android {
+    compileSdkVersion 29
+    defaultConfig {
+        applicationId "ml.apache.tvm.android.androidcamerademo"
+        minSdkVersion 24
+        targetSdkVersion 29
+        renderscriptTargetApi 18
+        renderscriptSupportModeEnabled true
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    sourceSets {
+        main {
+            jni.srcDirs = []
+            jniLibs.srcDirs = ['src/main/libs']
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    buildToolsVersion = '29.0.3'
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestImplementation('androidx.test.espresso:espresso-core:3.2.0', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'com.google.android.material:material:1.1.0'
+    implementation 'org.apache.tvm:tvm4j-core:0.0.1-SNAPSHOT'
+    testImplementation 'junit:junit:4.13'
+
+    implementation("androidx.concurrent:concurrent-futures:1.0.0")
+    implementation "androidx.camera:camera-core:1.0.0-beta01"
+    implementation "androidx.camera:camera-camera2:1.0.0-beta01"
+    // If you want to use the CameraX View class
+    implementation "androidx.camera:camera-view:1.0.0-alpha08"
+    // If you want to use the CameraX Extensions library
+    implementation "androidx.camera:camera-extensions:1.0.0-alpha08"
+    // If you want to use the CameraX Lifecycle library
+    implementation "androidx.camera:camera-lifecycle:1.0.0-beta01"
+}

apps/android_camera/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?><!--
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements.  See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You under the Apache License, Version 2.0
+ (the "License"); you may not use this file except in compliance with
+ the License.  You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="org.apache.tvm.android.androidcamerademo">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.CAMERA" />
+
+    <application
+        android:allowBackup="true"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme"
+        tools:ignore="AllowBackup,MissingApplicationIcon">
+        <activity
+            android:name="org.apache.tvm.android.androidcamerademo.MainActivity"
+            android:label="@string/app_name"
+            android:screenOrientation="portrait"
+            android:theme="@style/AppTheme.NoActionBar"
+            tools:ignore="LockedOrientationActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/provider_paths" />
+        </provider>
+    </application>
+</manifest>