posenet text exposed to open source public git repo.

PiperOrigin-RevId: 258860902

lite/examples/posenet/android/README.md

@@ -0,0 +1,15 @@
+# Tensorflow Lite PoseNet Android Demo
+### Overview
+This is an on-device camera app that detects the key points of a person in real-
+time with the camera activity using the PoseNet model. This app uses the PoseNet
+library that handles image processing, invoking the model, and processing output
+from the model.
+
+## Build the demo using Android Studio
+### Building
+* Type the following command in the terminal to build:
+  bazel build :posenet_app
+* Run the app on an android phone. If the application does not open
+automatically, use adb to start the application on device.
+Following command can be used from adb command line to start the application:
+ am start org.tensorflow.lite.examples.posenet/.CameraActivity

lite/examples/posenet/android/app/build.gradle

@@ -0,0 +1,37 @@
+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+  compileSdkVersion 29
+  buildToolsVersion "29.0.0"
+  defaultConfig {
+    applicationId "org.tensorflow.lite.examples.posenet"
+    minSdkVersion 27
+    targetSdkVersion 29
+    versionCode 1
+    versionName "1.0"
+    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+  }
+  buildTypes {
+    release {
+      minifyEnabled false
+      proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+    }
+  }
+}
+
+dependencies {
+  implementation fileTree(dir: 'libs', include: ['*.jar'])
+  implementation project(":posenet")
+  implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+  implementation 'androidx.appcompat:appcompat:1.0.2'
+  implementation 'androidx.core:core-ktx:1.0.2'
+  implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+  compile 'org.tensorflow:tensorflow-lite:+'
+  testImplementation 'junit:junit:4.12'
+  androidTestImplementation 'androidx.test:runner:1.2.0'
+  androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}

lite/examples/posenet/android/app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

lite/examples/posenet/android/app/src/androidTest/java/org/tensorflow/lite/examples/posenet/ExampleInstrumentedTest.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 The TensorFlow Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.tensorflow.lite.examples.posenet
+
+import androidx.test.InstrumentationRegistry
+import androidx.test.runner.AndroidJUnit4
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+  @Test
+  fun useAppContext() {
+    // Context of the app under test.
+    val appContext = InstrumentationRegistry.getTargetContext()
+    assertEquals("org.tensorflow.lite.examples.posenet", appContext.packageName)
+  }
+}

lite/examples/posenet/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="org.tensorflow.lite.examples.posenet">
+
+  <uses-permission android:name="android.permission.CAMERA" />
+  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+
+  <uses-feature android:name="android.hardware.camera" />
+  <uses-feature android:name="android.hardware.camera.autofocus" />
+
+  <uses-sdk
+      android:minSdkVersion="21"
+      android:targetSdkVersion="23" />
+
+  <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/MaterialTheme">
+
+    <activity
+        android:name=".MainActivity"
+        android:label="@string/app_name"
+        android:exported="true">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
+        <category android:name="android.intent.category.LAUNCHER"/>
+      </intent-filter>
+    </activity>
+
+    <activity android:name=".CameraActivity" android:exported="true">
+    </activity>
+
+  </application>
+
+</manifest>

lite/examples/posenet/android/app/src/main/java/org/tensorflow/lite/examples/posenet/AutoFitTextureView.kt

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2019 The TensorFlow Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.tensorflow.lite.examples.posenet
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.TextureView
+import android.view.View
+
+/**
+ * A [TextureView] that can be adjusted to a specified aspect ratio.
+ */
+class AutoFitTextureView @JvmOverloads constructor(
+  context: Context,
+  attrs: AttributeSet? = null,
+  defStyle: Int = 0
+) : TextureView(context, attrs, defStyle) {
+
+  private var ratioWidth = 0
+  private var ratioHeight = 0
+
+  /**
+   * Sets the aspect ratio for this view. The size of the view will be measured based on the ratio
+   * calculated from the parameters. Note that the actual sizes of parameters don't matter, that
+   * is, calling setAspectRatio(2, 3) and setAspectRatio(4, 6) make the same result.
+   *
+   * @param width Relative horizontal size
+   * @param height Relative vertical size
+   */
+  fun setAspectRatio(width: Int, height: Int) {
+    if (width < 0 || height < 0) {
+      throw IllegalArgumentException("Size cannot be negative.")
+    }
+    ratioWidth = width
+    ratioHeight = height
+    requestLayout()
+  }
+
+  override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+    super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+    val width = View.MeasureSpec.getSize(widthMeasureSpec)
+    val height = View.MeasureSpec.getSize(heightMeasureSpec)
+    if (ratioWidth == 0 || ratioHeight == 0) {
+      setMeasuredDimension(width, height)
+    } else {
+      if (width < height * ratioWidth / ratioHeight) {
+        setMeasuredDimension(width, width * ratioHeight / ratioWidth)
+      } else {
+        setMeasuredDimension(height * ratioWidth / ratioHeight, height)
+      }
+    }
+  }
+}

lite/examples/posenet/android/app/src/main/java/org/tensorflow/lite/examples/posenet/CameraActivity.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019 The TensorFlow Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.tensorflow.lite.examples.posenet
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+
+class CameraActivity : AppCompatActivity() {
+
+  override fun onCreate(savedInstanceState: Bundle?) {
+    super.onCreate(savedInstanceState)
+    setContentView(R.layout.activity_camera)
+    savedInstanceState ?: supportFragmentManager.beginTransaction()
+      .replace(R.id.container, CameraConnectionFragment.newInstance())
+      .commit()
+  }
+}