Project import generated by Copybara.

GitOrigin-RevId: 27c70b5fe62ab71189d358ca122ee4b19c817a8f

mediapipe/examples/android/solutions/BUILD

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+# Copyright 2021 The MediaPipe Authors.
+#
+# 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.
+
+licenses(["notice"])
+
+filegroup(
+    name = "resource_files",
+    srcs = glob(["res/**"]),
+    visibility = ["//mediapipe/examples/android/solutions:__subpackages__"],
+)

mediapipe/examples/android/solutions/build.gradle

@@ -0,0 +1,24 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.0"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

mediapipe/examples/android/solutions/gradle.properties

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+# 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=-Xmx2048m -Dfile.encoding=UTF-8
+# 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

mediapipe/examples/android/solutions/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.3-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

mediapipe/examples/android/solutions/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# 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.
+#
+
+##############################################################################
+##
+##  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 "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+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 or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; 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=`expr $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"
+
+exec "$JAVACMD" "$@"

mediapipe/examples/android/solutions/gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@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 Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@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="-Xmx64m" "-Xms64m"
+
+@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 execute
+
+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 execute
+
+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
+
+: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 %*
+
+: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

mediapipe/examples/android/solutions/hands/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.google.mediapipe.apps.hands"
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    // MediaPipe hands solution API and solution-core.
+    implementation 'com.google.mediapipe:solution-core:latest.release'
+    implementation 'com.google.mediapipe:hands:latest.release'
+    // MediaPipe deps
+    implementation 'com.google.flogger:flogger:latest.release'
+    implementation 'com.google.flogger:flogger-system-backend:latest.release'
+    implementation 'com.google.guava:guava:27.0.1-android'
+    implementation 'com.google.protobuf:protobuf-java:3.11.4'
+    // CameraX core library
+    def camerax_version = "1.0.0-beta10"
+    implementation "androidx.camera:camera-core:$camerax_version"
+    implementation "androidx.camera:camera-camera2:$camerax_version"
+    implementation "androidx.camera:camera-lifecycle:$camerax_version"
+}

mediapipe/examples/android/solutions/hands/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

mediapipe/examples/android/solutions/hands/src/main/AndroidManifest.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.google.mediapipe.examples.hands">
+
+  <uses-sdk
+      android:minSdkVersion="21"
+      android:targetSdkVersion="30" />
+
+  <!-- For loading images from gallery -->
+  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+  <!-- For using the camera -->
+  <uses-permission android:name="android.permission.CAMERA" />
+  <uses-feature android:name="android.hardware.camera" />
+
+  <application
+      android:allowBackup="true"
+      android:icon="@mipmap/ic_launcher"
+      android:label="MediaPipe Hands"
+      android:roundIcon="@mipmap/ic_launcher_round"
+      android:supportsRtl="true"
+      android:theme="@style/AppTheme">
+    <activity android:name=".MainActivity">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+    </activity>
+  </application>
+
+</manifest>

mediapipe/examples/android/solutions/hands/src/main/BUILD

@@ -0,0 +1,40 @@
+# Copyright 2021 The MediaPipe Authors.
+#
+# 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.
+
+licenses(["notice"])
+
+package(default_visibility = ["//visibility:private"])
+
+android_binary(
+    name = "hands",
+    srcs = glob(["**/*.java"]),
+    custom_package = "com.google.mediapipe.examples.hands",
+    manifest = "AndroidManifest.xml",
+    manifest_values = {
+        "applicationId": "com.google.mediapipe.examples.hands",
+    },
+    multidex = "native",
+    resource_files = ["//mediapipe/examples/android/solutions:resource_files"],
+    deps = [
+        "//mediapipe/framework/formats:landmark_java_proto_lite",
+        "//mediapipe/java/com/google/mediapipe/solutioncore:camera_input",
+        "//mediapipe/java/com/google/mediapipe/solutioncore:mediapipe_jni_lib",
+        "//mediapipe/java/com/google/mediapipe/solutioncore:solution_rendering",
+        "//mediapipe/java/com/google/mediapipe/solutions/hands",
+        "//third_party:androidx_appcompat",
+        "//third_party:androidx_constraint_layout",
+        "@maven//:androidx_concurrent_concurrent_futures",
+        "@maven//:com_google_guava_guava",
+    ],
+)

mediapipe/examples/android/solutions/hands/src/main/java/com/google/mediapipe/examples/hands/HandsResultGlRenderer.java

@@ -0,0 +1,129 @@
+// Copyright 2021 The MediaPipe Authors.
+//
+// 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 com.google.mediapipe.examples.hands;
+
+import android.opengl.GLES20;
+import android.opengl.Matrix;
+import com.google.mediapipe.formats.proto.LandmarkProto.NormalizedLandmark;
+import com.google.mediapipe.solutioncore.ResultGlBoundary;
+import com.google.mediapipe.solutioncore.ResultGlRenderer;
+import com.google.mediapipe.solutions.hands.Hands;
+import com.google.mediapipe.solutions.hands.HandsResult;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import java.util.List;
+
+/** A custom implementation of {@link ResultGlRenderer} to render MediaPope Hands results. */
+public class HandsResultGlRenderer implements ResultGlRenderer<HandsResult> {
+  private static final String TAG = "HandsResultGlRenderer";
+
+  private static final float CONNECTION_THICKNESS = 20.0f;
+  private static final String VERTEX_SHADER =
+      "uniform mat4 uTransformMatrix;\n"
+          + "attribute vec4 vPosition;\n"
+          + "void main() {\n"
+          + "  gl_Position = uTransformMatrix * vPosition;\n"
+          + "}";
+  private static final String FRAGMENT_SHADER =
+      "precision mediump float;\n"
+          + "void main() {\n"
+          + "  gl_FragColor = vec4(0, 1, 0, 1);\n"
+          + "}";
+  private int program;
+  private int positionHandle;
+  private int transformMatrixHandle;
+  private final float[] transformMatrix = new float[16];
+  private FloatBuffer vertexBuffer;
+
+  private int loadShader(int type, String shaderCode) {
+    int shader = GLES20.glCreateShader(type);
+    GLES20.glShaderSource(shader, shaderCode);
+    GLES20.glCompileShader(shader);
+    return shader;
+  }
+
+  @Override
+  public void setupRendering() {
+    program = GLES20.glCreateProgram();
+    int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, VERTEX_SHADER);
+    int fragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER, FRAGMENT_SHADER);
+    GLES20.glAttachShader(program, vertexShader);
+    GLES20.glAttachShader(program, fragmentShader);
+    GLES20.glLinkProgram(program);
+    positionHandle = GLES20.glGetAttribLocation(program, "vPosition");
+    transformMatrixHandle = GLES20.glGetUniformLocation(program, "uTransformMatrix");
+  }
+
+  @Override
+  public void renderResult(HandsResult result, ResultGlBoundary boundary) {
+    if (result == null) {
+      return;
+    }
+    GLES20.glUseProgram(program);
+    // Sets the transform matrix to align the result rendering with the scaled output texture.
+    Matrix.setIdentityM(transformMatrix, 0);
+    Matrix.scaleM(
+        transformMatrix,
+        0,
+        2 / (boundary.right() - boundary.left()),
+        2 / (boundary.top() - boundary.bottom()),
+        1.0f);
+    GLES20.glUniformMatrix4fv(transformMatrixHandle, 1, false, transformMatrix, 0);
+    GLES20.glLineWidth(CONNECTION_THICKNESS);
+
+    int numHands = result.multiHandLandmarks().size();
+    for (int i = 0; i < numHands; ++i) {
+      drawLandmarks(result.multiHandLandmarks().get(i).getLandmarkList());
+    }
+  }
+
+  /**
+   * Calls this to delete the shader program.
+   *
+   * <p>This is only necessary if one wants to release the program while keeping the context around.
+   */
+  public void release() {
+    GLES20.glDeleteProgram(program);
+  }
+
+  // TODO: Better hand landmark and hand connection drawing.
+  private void drawLandmarks(List<NormalizedLandmark> handLandmarkList) {
+    for (Hands.Connection c : Hands.HAND_CONNECTIONS) {
+      float[] vertex = new float[4];
+      NormalizedLandmark start = handLandmarkList.get(c.start());
+      vertex[0] = normalizedLandmarkValue(start.getX());
+      vertex[1] = normalizedLandmarkValue(start.getY());
+      NormalizedLandmark end = handLandmarkList.get(c.end());
+      vertex[2] = normalizedLandmarkValue(end.getX());
+      vertex[3] = normalizedLandmarkValue(end.getY());
+      vertexBuffer =
+          ByteBuffer.allocateDirect(vertex.length * 4)
+              .order(ByteOrder.nativeOrder())
+              .asFloatBuffer()
+              .put(vertex);
+      vertexBuffer.position(0);
+      GLES20.glEnableVertexAttribArray(positionHandle);
+      GLES20.glVertexAttribPointer(positionHandle, 2, GLES20.GL_FLOAT, false, 0, vertexBuffer);
+      GLES20.glDrawArrays(GLES20.GL_LINES, 0, 2);
+    }
+  }
+
+  // Normalizes the value from the landmark value range:[0, 1] to the standard OpenGL coordinate
+  // value range: [-1, 1].
+  private float normalizedLandmarkValue(float value) {
+    return value * 2 - 1;
+  }
+}

mediapipe/examples/android/solutions/hands/src/main/java/com/google/mediapipe/examples/hands/HandsResultImageView.java

@@ -0,0 +1,95 @@
+// Copyright 2021 The MediaPipe Authors.
+//
+// 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 com.google.mediapipe.examples.hands;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.widget.ImageView;
+import com.google.mediapipe.formats.proto.LandmarkProto;
+import com.google.mediapipe.formats.proto.LandmarkProto.NormalizedLandmark;
+import com.google.mediapipe.solutions.hands.Hands;
+import com.google.mediapipe.solutions.hands.HandsResult;
+import java.util.List;
+
+/** An ImageView implementation for displaying MediaPipe Hands results. */
+public class HandsResultImageView extends ImageView {
+  private static final String TAG = "HandsResultImageView";
+
+  private static final int LANDMARK_COLOR = Color.RED;
+  private static final int LANDMARK_RADIUS = 15;
+  private static final int CONNECTION_COLOR = Color.GREEN;
+  private static final int CONNECTION_THICKNESS = 10;
+
+  public HandsResultImageView(Context context) {
+    super(context);
+    setScaleType(ImageView.ScaleType.FIT_CENTER);
+  }
+
+  /**
+   * Sets a {@link HandsResult} to render.
+   *
+   * @param result a {@link HandsResult} object that contains the solution outputs and the input
+   *     {@link Bitmap}.
+   */
+  public void setHandsResult(HandsResult result) {
+    if (result == null) {
+      return;
+    }
+    Bitmap bmInput = result.inputBitmap();
+    int width = bmInput.getWidth();
+    int height = bmInput.getHeight();
+    Bitmap bmOutput = Bitmap.createBitmap(width, height, bmInput.getConfig());
+    Canvas canvas = new Canvas(bmOutput);
+
+    canvas.drawBitmap(bmInput, new Matrix(), null);
+    int numHands = result.multiHandLandmarks().size();
+    for (int i = 0; i < numHands; ++i) {
+      drawLandmarksOnCanvas(
+          result.multiHandLandmarks().get(i).getLandmarkList(), canvas, width, height);
+    }
+    postInvalidate();
+    setImageBitmap(bmOutput);
+  }
+
+  // TODO: Better hand landmark and hand connection drawing.
+  private void drawLandmarksOnCanvas(
+      List<NormalizedLandmark> handLandmarkList, Canvas canvas, int width, int height) {
+    // Draw connections.
+    for (Hands.Connection c : Hands.HAND_CONNECTIONS) {
+      Paint connectionPaint = new Paint();
+      connectionPaint.setColor(CONNECTION_COLOR);
+      connectionPaint.setStrokeWidth(CONNECTION_THICKNESS);
+      NormalizedLandmark start = handLandmarkList.get(c.start());
+      NormalizedLandmark end = handLandmarkList.get(c.end());
+      canvas.drawLine(
+          start.getX() * width,
+          start.getY() * height,
+          end.getX() * width,
+          end.getY() * height,
+          connectionPaint);
+    }
+    Paint landmarkPaint = new Paint();
+    landmarkPaint.setColor(LANDMARK_COLOR);
+    // Draw landmarks.
+    for (LandmarkProto.NormalizedLandmark landmark : handLandmarkList) {
+      canvas.drawCircle(
+          landmark.getX() * width, landmark.getY() * height, LANDMARK_RADIUS, landmarkPaint);
+    }
+  }
+}

mediapipe/examples/android/solutions/hands/src/main/java/com/google/mediapipe/examples/hands/MainActivity.java

@@ -0,0 +1,241 @@
+// Copyright 2021 The MediaPipe Authors.
+//
+// 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 com.google.mediapipe.examples.hands;
+
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.os.Bundle;
+import android.provider.MediaStore;
+import androidx.appcompat.app.AppCompatActivity;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
+import com.google.mediapipe.formats.proto.LandmarkProto.NormalizedLandmark;
+import com.google.mediapipe.solutioncore.CameraInput;
+import com.google.mediapipe.solutioncore.SolutionGlSurfaceView;
+import com.google.mediapipe.solutions.hands.HandLandmark;
+import com.google.mediapipe.solutions.hands.Hands;
+import com.google.mediapipe.solutions.hands.HandsOptions;
+import com.google.mediapipe.solutions.hands.HandsResult;
+import java.io.IOException;
+
+/** Main activity of MediaPipe Hands app. */
+public class MainActivity extends AppCompatActivity {
+  private static final String TAG = "MainActivity";
+
+  private Hands hands;
+  private int mode = HandsOptions.STATIC_IMAGE_MODE;
+  // Image demo UI and image loader components.
+  private Button loadImageButton;
+  private ActivityResultLauncher<Intent> imageGetter;
+  private HandsResultImageView imageView;
+
+  // Live camera demo UI and camera components.
+  private Button startCameraButton;
+  private CameraInput cameraInput;
+  private SolutionGlSurfaceView<HandsResult> glSurfaceView;
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    setContentView(R.layout.activity_main);
+    setupStaticImageDemoUiComponents();
+    setupLiveDemoUiComponents();
+  }
+
+  @Override
+  protected void onResume() {
+    super.onResume();
+    if (mode == HandsOptions.STREAMING_MODE) {
+      // Restarts the camera and the opengl surface rendering.
+      cameraInput = new CameraInput(this);
+      cameraInput.setCameraNewFrameListener(textureFrame -> hands.send(textureFrame));
+      glSurfaceView.post(this::startCamera);
+      glSurfaceView.setVisibility(View.VISIBLE);
+    }
+  }
+
+  @Override
+  protected void onPause() {
+    super.onPause();
+    if (mode == HandsOptions.STREAMING_MODE) {
+      stopLiveDemo();
+    }
+  }
+
+  /** Sets up the UI components for the static image demo. */
+  private void setupStaticImageDemoUiComponents() {
+    // The Intent to access gallery and read images as bitmap.
+    imageGetter =
+        registerForActivityResult(
+            new ActivityResultContracts.StartActivityForResult(),
+            result -> {
+              Intent resultIntent = result.getData();
+              if (resultIntent != null) {
+                if (result.getResultCode() == RESULT_OK) {
+                  Bitmap bitmap = null;
+                  try {
+                    bitmap =
+                        MediaStore.Images.Media.getBitmap(
+                            this.getContentResolver(), resultIntent.getData());
+                  } catch (IOException e) {
+                    Log.e(TAG, "Bitmap reading error:" + e);
+                  }
+                  if (bitmap != null) {
+                    hands.send(bitmap);
+                  }
+                }
+              }
+            });
+    loadImageButton = (Button) findViewById(R.id.button_load_picture);
+    loadImageButton.setOnClickListener(
+        new View.OnClickListener() {
+          @Override
+          public void onClick(View v) {
+            if (mode == HandsOptions.STREAMING_MODE) {
+              stopLiveDemo();
+            }
+            if (hands == null || mode != HandsOptions.STATIC_IMAGE_MODE) {
+              setupStaticImageModePipeline();
+            }
+            // Reads images from gallery.
+            Intent gallery =
+                new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI);
+            imageGetter.launch(gallery);
+          }
+        });
+    imageView = new HandsResultImageView(this);
+  }
+
+  /** The core MediaPipe Hands setup workflow for its static image mode. */
+  private void setupStaticImageModePipeline() {
+    // Initializes a new MediaPipe Hands instance in the static image mode.
+    mode = HandsOptions.STATIC_IMAGE_MODE;
+    if (hands != null) {
+      hands.close();
+    }
+    hands = new Hands(this, HandsOptions.builder().setMode(mode).build());
+
+    // Connects MediaPipe Hands to the user-defined HandsResultImageView.
+    hands.setResultListener(
+        handsResult -> {
+          logWristLandmark(handsResult, /*showPixelValues=*/ true);
+          runOnUiThread(() -> imageView.setHandsResult(handsResult));
+        });
+    hands.setErrorListener((message, e) -> Log.e(TAG, "MediaPipe hands error:" + message));
+
+    // Updates the preview layout.
+    FrameLayout frameLayout = (FrameLayout) findViewById(R.id.preview_display_layout);
+    frameLayout.removeAllViewsInLayout();
+    imageView.setImageDrawable(null);
+    frameLayout.addView(imageView);
+    imageView.setVisibility(View.VISIBLE);
+  }
+
+  /** Sets up the UI components for the live demo with camera input. */
+  private void setupLiveDemoUiComponents() {
+    startCameraButton = (Button) findViewById(R.id.button_start_camera);
+    startCameraButton.setOnClickListener(
+        new View.OnClickListener() {
+          @Override
+          public void onClick(View v) {
+            if (hands == null || mode != HandsOptions.STREAMING_MODE) {
+              setupStreamingModePipeline();
+            }
+          }
+        });
+  }
+
+  /** The core MediaPipe Hands setup workflow for its streaming mode. */
+  private void setupStreamingModePipeline() {
+    // Initializes a new MediaPipe Hands instance in the streaming mode.
+    mode = HandsOptions.STREAMING_MODE;
+    if (hands != null) {
+      hands.close();
+    }
+    hands = new Hands(this, HandsOptions.builder().setMode(mode).build());
+    hands.setErrorListener((message, e) -> Log.e(TAG, "MediaPipe hands error:" + message));
+
+    // Initializes a new CameraInput instance and connects it to MediaPipe Hands.
+    cameraInput = new CameraInput(this);
+    cameraInput.setCameraNewFrameListener(textureFrame -> hands.send(textureFrame));
+
+    // Initalizes a new Gl surface view with a user-defined HandsResultGlRenderer.
+    glSurfaceView =
+        new SolutionGlSurfaceView<>(this, hands.getGlContext(), hands.getGlMajorVersion());
+    glSurfaceView.setSolutionResultRenderer(new HandsResultGlRenderer());
+    glSurfaceView.setRenderInputImage(true);
+    hands.setResultListener(
+        handsResult -> {
+          logWristLandmark(handsResult, /*showPixelValues=*/ false);
+          glSurfaceView.setRenderData(handsResult);
+          glSurfaceView.requestRender();
+        });
+
+    // The runnable to start camera after the gl surface view is attached.
+    glSurfaceView.post(this::startCamera);
+
+    // Updates the preview layout.
+    FrameLayout frameLayout = (FrameLayout) findViewById(R.id.preview_display_layout);
+    imageView.setVisibility(View.GONE);
+    frameLayout.removeAllViewsInLayout();
+    frameLayout.addView(glSurfaceView);
+    glSurfaceView.setVisibility(View.VISIBLE);
+    frameLayout.requestLayout();
+  }
+
+  private void startCamera() {
+    cameraInput.start(
+        this,
+        hands.getGlContext(),
+        CameraInput.CameraFacing.FRONT,
+        glSurfaceView.getWidth(),
+        glSurfaceView.getHeight());
+  }
+
+  private void stopLiveDemo() {
+    if (cameraInput != null) {
+      cameraInput.stop();
+    }
+    if (glSurfaceView != null) {
+      glSurfaceView.setVisibility(View.GONE);
+    }
+  }
+
+  private void logWristLandmark(HandsResult result, boolean showPixelValues) {
+    NormalizedLandmark wristLandmark = Hands.getHandLandmark(result, 0, HandLandmark.WRIST);
+    // For Bitmaps, show the pixel values. For texture inputs, show the normoralized cooridanates.
+    if (showPixelValues) {
+      int width = result.inputBitmap().getWidth();
+      int height = result.inputBitmap().getHeight();
+      Log.i(
+          TAG,
+          "MediaPipe Hand wrist coordinates (pixel values): x= "
+              + wristLandmark.getX() * width
+              + " y="
+              + wristLandmark.getY() * height);
+    } else {
+      Log.i(
+          TAG,
+          "MediaPipe Hand wrist normalized coordinates (value range: [0, 1]): x= "
+              + wristLandmark.getX()
+              + " y="
+              + wristLandmark.getY());
+    }
+  }
+}

mediapipe/examples/android/solutions/hands/src/main/res

@@ -0,0 +1 @@
+../../../res

mediapipe/examples/android/solutions/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportHeight="108"
+    android:viewportWidth="108">
+    <path
+        android:fillType="evenOdd"
+        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+        android:strokeColor="#00000000"
+        android:strokeWidth="1">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="78.5885"
+                android:endY="90.9159"
+                android:startX="48.7653"
+                android:startY="61.0927"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeColor="#00000000"
+        android:strokeWidth="1" />
+</vector>

mediapipe/examples/android/solutions/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+    android:height="108dp"
+    android:width="108dp"
+    android:viewportHeight="108"
+    android:viewportWidth="108"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#26A69A"
+          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>

mediapipe/examples/android/solutions/res/layout/activity_main.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+    <LinearLayout
+        android:id="@+id/buttons"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:orientation="horizontal">
+        <Button
+            android:id="@+id/button_load_picture"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Load Picture" />
+        <Button
+            android:id="@+id/button_start_camera"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Start Camera" />
+    </LinearLayout>
+    <FrameLayout
+        android:id="@+id/preview_display_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+        <TextView
+            android:id="@+id/no_view"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:text="Please press any button above to start" />
+    </FrameLayout>
+</LinearLayout>

mediapipe/examples/android/solutions/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>

mediapipe/examples/android/solutions/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>

mediapipe/examples/android/solutions/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+</resources>

mediapipe/examples/android/solutions/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="no_camera_access" translatable="false">Please grant camera permissions.</string>
+</resources>

mediapipe/examples/android/solutions/res/values/styles.xml

@@ -0,0 +1,11 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+</resources>

mediapipe/examples/android/solutions/settings.gradle

@@ -0,0 +1,2 @@
+rootProject.name = "mediapipe-solutions-examples"
+include ':hands'

mediapipe/examples/desktop/autoflip/calculators/content_zooming_calculator_test.cc

@@ -291,7 +291,6 @@ TEST(ContentZoomingCalculatorTest, ZoomTest) {
   CheckBorder(static_features, 1000, 1000, 495, 395);
 }
 
-#if 0
 TEST(ContentZoomingCalculatorTest, ZoomTestFullPTZ) {
   auto runner = ::absl::make_unique<CalculatorRunner>(
       ParseTextProtoOrDie<CalculatorGraphConfig::Node>(kConfigD));
@@ -727,8 +726,8 @@ TEST(ContentZoomingCalculatorTest, ResolutionChangeZoomingWithCache) {
     auto runner = ::absl::make_unique<CalculatorRunner>(config);
     runner->MutableSidePackets()->Tag("STATE_CACHE") = MakePacket<
         mediapipe::autoflip::ContentZoomingCalculatorStateCacheType*>(&cache);
-    AddDetectionFrameSize(cv::Rect_<float>(.4, .4, .2, .2), 1000000, 1000,
-                          1000, runner.get());
+    AddDetectionFrameSize(cv::Rect_<float>(.4, .4, .2, .2), 1000000, 1000, 1000,
+                          runner.get());
     AddDetectionFrameSize(cv::Rect_<float>(.4, .4, .2, .2), 2000000, 500, 500,
                           runner.get());
     MP_ASSERT_OK(runner->Run());
@@ -752,7 +751,6 @@ TEST(ContentZoomingCalculatorTest, MaxZoomValue) {
   CheckCropRect(500, 500, 916, 916, 0,
                 runner->Outputs().Tag("CROP_RECT").packets);
 }
-#endif
 
 TEST(ContentZoomingCalculatorTest, MaxZoomValueOverride) {
   auto config = ParseTextProtoOrDie<CalculatorGraphConfig::Node>(kConfigF);
@@ -781,7 +779,6 @@ TEST(ContentZoomingCalculatorTest, MaxZoomValueOverride) {
                 runner->Outputs().Tag("CROP_RECT").packets);
 }
 
-#if 0
 TEST(ContentZoomingCalculatorTest, MaxZoomOutValue) {
   auto config = ParseTextProtoOrDie<CalculatorGraphConfig::Node>(kConfigD);
   auto* options = config.mutable_options()->MutableExtension(
@@ -969,7 +966,6 @@ TEST(ContentZoomingCalculatorTest, ProvidesConstantFirstRect) {
     EXPECT_EQ(first_rect.height(), rect.height());
   }
 }
-#endif
 
 }  // namespace
 }  // namespace autoflip

mediapipe/examples/desktop/autoflip/calculators/face_box_adjuster_calculator.proto

@@ -71,7 +71,10 @@ message FaceBoxAdjusterCalculatorOptions {
   optional int32 max_facesize_history_us = 9 [default = 300000000];
 
   // Scale factor of face width to shift based on pan look angle.
-  optional float pan_position_shift_scale = 15 [default = 0.5];
+  optional float pan_position_shift_scale = 15
+      [default = 1.0, deprecated = true];
   // Scale factor of face height to shift based on tilt look angle.
-  optional float tilt_position_shift_scale = 16 [default = 0.5];
+  optional float tilt_position_shift_scale = 16 [default = 0.25];
+  // Scale factor of face width to shift based on roll look angle.
+  optional float roll_position_shift_scale = 17 [default = 0.7];
 }

mediapipe/examples/ios/link_local_profiles.py

@@ -29,6 +29,7 @@ import os
 import plistlib
 import re
 import subprocess
+from typing import Optional
 import uuid
 
 # This script is meant to be located in the MediaPipe iOS examples directory
@@ -79,7 +80,7 @@ def configure_bundle_id_prefix(
   return bundle_id_prefix
 
 
-def get_app_id(profile_path) -> str:
+def get_app_id(profile_path) -> Optional[str]:
   try:
     plist = subprocess.check_output(
         ["security", "cms", "-D", "-i", profile_path])