Project import generated by Copybara.

GitOrigin-RevId: 9295f8ea2339edb71073695ed4fb3fded2f48c60
2020-08-13 01:32:08 -04:00
parent 6b0ab0e012
commit d7c287c4e9
248 changed files with 10356 additions and 5328 deletions
@@ -0,0 +1,62 @@
+# Copyright 2019 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"])  # Apache 2.0
+
+package(default_visibility = ["//visibility:private"])
+
+cc_binary(
+    name = "libmediapipe_jni.so",
+    linkshared = 1,
+    linkstatic = 1,
+    deps = [
+        "//mediapipe/graphs/pose_tracking:upper_body_pose_tracking_gpu_deps",
+        "//mediapipe/java/com/google/mediapipe/framework/jni:mediapipe_framework_jni",
+    ],
+)
+
+cc_library(
+    name = "mediapipe_jni_lib",
+    srcs = [":libmediapipe_jni.so"],
+    alwayslink = 1,
+)
+
+android_binary(
+    name = "upperbodyposetrackinggpu",
+    srcs = glob(["*.java"]),
+    assets = [
+        "//mediapipe/graphs/pose_tracking:upper_body_pose_tracking_gpu.binarypb",
+        "//mediapipe/modules/pose_landmark:pose_landmark_upper_body.tflite",
+        "//mediapipe/modules/pose_detection:pose_detection.tflite",
+    ],
+    assets_dir = "",
+    manifest = "//mediapipe/examples/android/src/java/com/google/mediapipe/apps/basic:AndroidManifest.xml",
+    manifest_values = {
+        "applicationId": "com.google.mediapipe.apps.upperbodyposetrackinggpu",
+        "appName": "Upper Body Pose Tracking",
+        "mainActivity": ".MainActivity",
+        "cameraFacingFront": "False",
+        "binaryGraphName": "upper_body_pose_tracking_gpu.binarypb",
+        "inputVideoStreamName": "input_video",
+        "outputVideoStreamName": "output_video",
+        "flipFramesVertically": "True",
+    },
+    multidex = "native",
+    deps = [
+        ":mediapipe_jni_lib",
+        "//mediapipe/examples/android/src/java/com/google/mediapipe/apps/basic:basic_lib",
+        "//mediapipe/framework/formats:landmark_java_proto_lite",
+        "//mediapipe/java/com/google/mediapipe/framework:android_framework",
+    ],
+)
@@ -0,0 +1,75 @@
+// Copyright 2019 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.apps.upperbodyposetrackinggpu;
+
+import android.os.Bundle;
+import android.util.Log;
+import com.google.mediapipe.formats.proto.LandmarkProto.NormalizedLandmark;
+import com.google.mediapipe.formats.proto.LandmarkProto.NormalizedLandmarkList;
+import com.google.mediapipe.framework.PacketGetter;
+import com.google.protobuf.InvalidProtocolBufferException;
+
+/** Main activity of MediaPipe upper-body pose tracking app. */
+public class MainActivity extends com.google.mediapipe.apps.basic.MainActivity {
+  private static final String TAG = "MainActivity";
+
+  private static final String OUTPUT_LANDMARKS_STREAM_NAME = "pose_landmarks";
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+
+    // To show verbose logging, run:
+    // adb shell setprop log.tag.MainActivity VERBOSE
+    if (Log.isLoggable(TAG, Log.VERBOSE)) {
+      processor.addPacketCallback(
+          OUTPUT_LANDMARKS_STREAM_NAME,
+          (packet) -> {
+            Log.v(TAG, "Received pose landmarks packet.");
+            try {
+              NormalizedLandmarkList poseLandmarks =
+                  PacketGetter.getProto(packet, NormalizedLandmarkList.class);
+              Log.v(
+                  TAG,
+                  "[TS:"
+                      + packet.getTimestamp()
+                      + "] "
+                      + getPoseLandmarksDebugString(poseLandmarks));
+            } catch (InvalidProtocolBufferException exception) {
+              Log.e(TAG, "Failed to get proto.", exception);
+            }
+          });
+    }
+  }
+
+  private static String getPoseLandmarksDebugString(NormalizedLandmarkList poseLandmarks) {
+    String poseLandmarkStr = "Pose landmarks: " + poseLandmarks.getLandmarkCount() + "\n";
+    int landmarkIndex = 0;
+    for (NormalizedLandmark landmark : poseLandmarks.getLandmarkList()) {
+      poseLandmarkStr +=
+          "\tLandmark ["
+              + landmarkIndex
+              + "]: ("
+              + landmark.getX()
+              + ", "
+              + landmark.getY()
+              + ", "
+              + landmark.getZ()
+              + ")\n";
+      ++landmarkIndex;
+    }
+    return poseLandmarkStr;
+  }
+}
@@ -0,0 +1,34 @@
+# Copyright 2020 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"])  # Apache 2.0
+
+package(default_visibility = ["//mediapipe/examples:__subpackages__"])
+
+cc_binary(
+    name = "upper_body_pose_tracking_cpu",
+    deps = [
+        "//mediapipe/examples/desktop:demo_run_graph_main",
+        "//mediapipe/graphs/pose_tracking:upper_body_pose_tracking_cpu_deps",
+    ],
+)
+
+# Linux only
+cc_binary(
+    name = "upper_body_pose_tracking_gpu",
+    deps = [
+        "//mediapipe/examples/desktop:demo_run_graph_main_gpu",
+        "//mediapipe/graphs/pose_tracking:upper_body_pose_tracking_gpu_deps",
+    ],
+)
@@ -14,6 +14,8 @@

 #import "AppDelegate.h"

+#import "mediapipe/examples/ios/common/CommonViewController.h"
+
@interface AppDelegate ()

@end
@@ -23,21 +23,25 @@
    {
      "idiom" : "iphone",
      "size" : "40x40",
+      "filename" : "40_c_2x.png",
      "scale" : "2x"
    },
    {
      "idiom" : "iphone",
      "size" : "40x40",
+      "filename" : "40_c_3x.png",
      "scale" : "3x"
    },
    {
      "idiom" : "iphone",
      "size" : "60x60",
+      "filename" : "60_c_iphone_2x.png",
      "scale" : "2x"
    },
    {
      "idiom" : "iphone",
      "size" : "60x60",
+      "filename" : "60_c_iphone_3x.png",
      "scale" : "3x"
    },
    {
@@ -63,6 +67,7 @@
    {
      "idiom" : "ipad",
      "size" : "40x40",
+      "filename" : "40_c_1x.png",
      "scale" : "1x"
    },
    {
@@ -73,6 +78,7 @@
    {
      "idiom" : "ipad",
      "size" : "76x76",
+      "filename" : "76_c_Ipad.png",
      "scale" : "1x"
    },
    {
@@ -0,0 +1,52 @@
+# Copyright 2019 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"])  # Apache 2.0
+
+objc_library(
+    name = "CommonMediaPipeAppLibrary",
+    srcs = [
+        "AppDelegate.mm",
+        "CommonViewController.mm",
+        "main.m",
+    ],
+    hdrs = [
+        "AppDelegate.h",
+        "CommonViewController.h",
+    ],
+    data = [
+        "Base.lproj/LaunchScreen.storyboard",
+        "Base.lproj/Main.storyboard",
+    ],
+    sdk_frameworks = [
+        "AVFoundation",
+        "CoreGraphics",
+        "CoreMedia",
+        "UIKit",
+    ],
+    visibility = ["//mediapipe:__subpackages__"],
+    deps = [
+        "//mediapipe/objc:mediapipe_framework_ios",
+        "//mediapipe/objc:mediapipe_input_sources_ios",
+        "//mediapipe/objc:mediapipe_layer_renderer",
+    ],
+)
+
+exports_files(["Info.plist"])
+
+filegroup(
+    name = "AppIcon",
+    srcs = glob(["Assets.xcassets/AppIcon.appiconset/*"]),
+    visibility = ["//mediapipe:__subpackages__"],
+)
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
    <device id="retina4_7" orientation="portrait" appearance="light"/>
    <dependencies>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
@@ -7,10 +7,10 @@
        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
    </dependencies>
    <scenes>
-        <!--View Controller-->
+        <!--Common View Controller-->
        <scene sceneID="tne-QT-ifu">
            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
+                <viewController id="BYZ-38-t0r" customClass="CommonViewController" sceneMemberID="viewController">
                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
@@ -37,8 +37,8 @@
                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
                    </view>
                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
+                        <outlet property="liveView" destination="8bC-Xf-vdC" id="3qM-tM-inb"/>
+                        <outlet property="noCameraLabel" destination="emf-N5-sEd" id="TUU-KL-fTU"/>
                    </connections>
                </viewController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
@@ -0,0 +1,63 @@
+// Copyright 2019 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.
+
+#import <UIKit/UIKit.h>
+
+#import "mediapipe/objc/MPPCameraInputSource.h"
+#import "mediapipe/objc/MPPGraph.h"
+#import "mediapipe/objc/MPPLayerRenderer.h"
+#import "mediapipe/objc/MPPPlayerInputSource.h"
+
+typedef NS_ENUM(NSInteger, MediaPipeDemoSourceMode) {
+  MediaPipeDemoSourceCamera,
+  MediaPipeDemoSourceVideo
+};
+
+@interface CommonViewController : UIViewController <MPPGraphDelegate, MPPInputSourceDelegate>
+
+// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in
+// viewWillAppear: and sent video frames on videoQueue.
+@property(nonatomic) MPPGraph* mediapipeGraph;
+
+// Handles camera access via AVCaptureSession library.
+@property(nonatomic) MPPCameraInputSource* cameraSource;
+
+// Provides data from a video.
+@property(nonatomic) MPPPlayerInputSource* videoSource;
+
+// The data source for the demo.
+@property(nonatomic) MediaPipeDemoSourceMode sourceMode;
+
+// Inform the user when camera is unavailable.
+@property(nonatomic) IBOutlet UILabel* noCameraLabel;
+
+// Display the camera preview frames.
+@property(strong, nonatomic) IBOutlet UIView* liveView;
+
+// Render frames in a layer.
+@property(nonatomic) MPPLayerRenderer* renderer;
+
+// Process camera frames on this queue.
+@property(nonatomic) dispatch_queue_t videoQueue;
+
+// Graph name.
+@property(nonatomic) NSString* graphName;
+
+// Graph input stream.
+@property(nonatomic) const char* graphInputStream;
+
+// Graph output stream.
+@property(nonatomic) const char* graphOutputStream;
+
+@end
@@ -12,46 +12,24 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-#import "ViewController.h"
+#import "CommonViewController.h"

-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-#import "mediapipe/objc/MPPPlayerInputSource.h"
-
-static NSString* const kGraphName = @"mobile_gpu";
-
-static const char* kInputStream = "input_video";
-static const char* kOutputStream = "output_video";
 static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";

-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
+@implementation CommonViewController

-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-  MPPPlayerInputSource* _videoSource;
-  MediaPipeDemoSourceMode _sourceMode;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
- (void)setSourceMode:(MediaPipeDemoSourceMode)mode {
-  _sourceMode = mode;
+// This provides a hook to replace the basic ViewController with a subclass when it's created from a
+// storyboard, without having to change the storyboard itself.
+ (instancetype)allocWithZone:(struct _NSZone*)zone {
+  NSString* subclassName = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"MainViewController"];
+  if (subclassName.length > 0) {
+    Class customClass = NSClassFromString(subclassName);
+    Class baseClass = [CommonViewController class];
+    NSAssert([customClass isSubclassOfClass:baseClass], @"%@ must be a subclass of %@", customClass,
+             baseClass);
+    if (self == baseClass) return [customClass allocWithZone:zone];
+  }
+  return [super allocWithZone:zone];
 }

 #pragma mark - Cleanup methods
@@ -86,7 +64,6 @@ static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";

  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
  return newGraph;
 }

@@ -95,19 +72,26 @@ static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
 - (void)viewDidLoad {
  [super viewDidLoad];

-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
+  self.renderer = [[MPPLayerRenderer alloc] init];
+  self.renderer.layer.frame = self.liveView.layer.bounds;
+  [self.liveView.layer addSublayer:self.renderer.layer];
+  self.renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;

  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
+  self.videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
+
+  self.graphName = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"GraphName"];
+  self.graphInputStream =
+      [[[NSBundle mainBundle] objectForInfoDictionaryKey:@"GraphInputStream"] UTF8String];
+  self.graphOutputStream =
+      [[[NSBundle mainBundle] objectForInfoDictionaryKey:@"GraphOutputStream"] UTF8String];
+
+  self.mediapipeGraph = [[self class] loadGraphFromResource:self.graphName];
+  [self.mediapipeGraph addFrameOutputStream:self.graphOutputStream
+                           outputPacketType:MPPPacketTypePixelBuffer];

-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
 }

 // In this application, there is only one ViewController which has no navigation to other view
@@ -119,43 +103,77 @@ static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
 - (void)viewWillAppear:(BOOL)animated {
  [super viewWillAppear:animated];

+  switch (self.sourceMode) {
+    case MediaPipeDemoSourceVideo: {
+      NSString* videoName = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"VideoName"];
+      AVAsset* video = [AVAsset assetWithURL:[[NSBundle mainBundle] URLForResource:videoName
+                                                                     withExtension:@"mov"]];
+      self.videoSource = [[MPPPlayerInputSource alloc] initWithAVAsset:video];
+      [self.videoSource setDelegate:self queue:self.videoQueue];
+      dispatch_async(self.videoQueue, ^{
+        [self.videoSource start];
+      });
+      break;
+    }
+    case MediaPipeDemoSourceCamera: {
+      self.cameraSource = [[MPPCameraInputSource alloc] init];
+      [self.cameraSource setDelegate:self queue:self.videoQueue];
+      self.cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
+
+      NSString* cameraPosition =
+          [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CameraPosition"];
+      if (cameraPosition.length > 0 && [cameraPosition isEqualToString:@"back"]) {
+        self.cameraSource.cameraPosition = AVCaptureDevicePositionBack;
+      } else {
+        self.cameraSource.cameraPosition = AVCaptureDevicePositionFront;
+        // When using the front camera, mirror the input for a more natural look.
+        _cameraSource.videoMirrored = YES;
+      }
+
+      // The frame's native format is rotated with respect to the portrait orientation.
+      _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
+
+      [self.cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
+        if (granted) {
+          [self startGraphAndCamera];
+          dispatch_async(dispatch_get_main_queue(), ^{
+            self.noCameraLabel.hidden = YES;
+          });
+        }
+      }];
+
+      break;
+    }
+  }
+}
+
+- (void)startGraphAndCamera {
  // Start running self.mediapipeGraph.
  NSError* error;
  if (![self.mediapipeGraph startWithError:&error]) {
    NSLog(@"Failed to start graph: %@", error);
  }

-  switch (_sourceMode) {
-    case MediaPipeDemoSourceVideo: {
-      AVAsset* video =
-          [AVAsset assetWithURL:[[NSBundle mainBundle] URLForResource:@"object_detection"
-                                                        withExtension:@"mov"]];
-      _videoSource = [[MPPPlayerInputSource alloc] initWithAVAsset:video];
-      [_videoSource setDelegate:self queue:_videoQueue];
-      dispatch_async(_videoQueue, ^{
-        [_videoSource start];
-      });
-      break;
-    }
-    case MediaPipeDemoSourceBackCamera:
-      _cameraSource = [[MPPCameraInputSource alloc] init];
-      [_cameraSource setDelegate:self queue:_videoQueue];
-      _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-      _cameraSource.cameraPosition = AVCaptureDevicePositionBack;
-      // The frame's native format is rotated with respect to the portrait orientation.
-      _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-      [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-        if (granted) {
-          dispatch_async(_videoQueue, ^{
-            [_cameraSource start];
-          });
-          dispatch_async(dispatch_get_main_queue(), ^{
-            _noCameraLabel.hidden = YES;
-          });
-        }
-      }];
-      break;
+  // Start fetching frames from the camera.
+  dispatch_async(self.videoQueue, ^{
+    [self.cameraSource start];
+  });
+}
+
+#pragma mark - MPPInputSourceDelegate methods
+
+// Must be invoked on self.videoQueue.
+- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
+                timestamp:(CMTime)timestamp
+               fromSource:(MPPInputSource*)source {
+  if (source != self.cameraSource && source != self.videoSource) {
+    NSLog(@"Unknown source: %@", source);
+    return;
  }
+
+  [self.mediapipeGraph sendPixelBuffer:imageBuffer
+                            intoStream:self.graphInputStream
+                            packetType:MPPPacketTypePixelBuffer];
 }

 #pragma mark - MPPGraphDelegate methods
@@ -164,29 +182,14 @@ static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
 - (void)mediapipeGraph:(MPPGraph*)graph
    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
+  if (streamName == self.graphOutputStream) {
    // Display the captured image on the screen.
    CVPixelBufferRetain(pixelBuffer);
    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
+      [self.renderer renderPixelBuffer:pixelBuffer];
      CVPixelBufferRelease(pixelBuffer);
    });
  }
 }

-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource && source != _videoSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
@end
@@ -37,7 +37,6 @@
  <key>UISupportedInterfaceOrientations~ipad</key>
  <array>
    <string>UIInterfaceOrientationPortrait</string>
-    <string>UIInterfaceOrientationPortraitUpsideDown</string>
  </array>
 </dict>
 </plist>
@@ -1,99 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="EfB-xq-knP">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                <subviews>
-                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Camera access needed for this demo. Please enable camera access in the Settings app." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="emf-N5-sEd">
-                                        <rect key="frame" x="57" y="258" width="260" height="151"/>
-                                        <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                        <nil key="highlightedColor"/>
-                                    </label>
-                                </subviews>
-                                <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <accessibility key="accessibilityConfiguration" label="PreviewDisplayView">
-                                    <bool key="isElement" value="YES"/>
-                                </accessibility>
-                            </view>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="48.799999999999997" y="20.239880059970016"/>
-        </scene>
-    </scenes>
-</document>
@@ -1,19 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-@end
@@ -1,176 +0,0 @@
-// Copyright 2019 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.
-
-#import "ViewController.h"
-
-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-
-static NSString* const kGraphName = @"mobile_gpu";
-
-static const char* kInputStream = "input_video";
-static const char* kOutputStream = "output_video";
-static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
-
-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
-
-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
-#pragma mark - Cleanup methods
-
- (void)dealloc {
-  self.mediapipeGraph.delegate = nil;
-  [self.mediapipeGraph cancel];
-  // Ignore errors since we're cleaning up.
-  [self.mediapipeGraph closeAllInputStreamsWithError:nil];
-  [self.mediapipeGraph waitUntilDoneWithError:nil];
-}
-
-#pragma mark - MediaPipe graph methods
-
-+ (MPPGraph*)loadGraphFromResource:(NSString*)resource {
-  // Load the graph config resource.
-  NSError* configLoadError = nil;
-  NSBundle* bundle = [NSBundle bundleForClass:[self class]];
-  if (!resource || resource.length == 0) {
-    return nil;
-  }
-  NSURL* graphURL = [bundle URLForResource:resource withExtension:@"binarypb"];
-  NSData* data = [NSData dataWithContentsOfURL:graphURL options:0 error:&configLoadError];
-  if (!data) {
-    NSLog(@"Failed to load MediaPipe graph config: %@", configLoadError);
-    return nil;
-  }
-
-  // Parse the graph config resource into mediapipe::CalculatorGraphConfig proto object.
-  mediapipe::CalculatorGraphConfig config;
-  config.ParseFromArray(data.bytes, data.length);
-
-  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
-  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
-  return newGraph;
-}
-
-#pragma mark - UIViewController methods
-
- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
-
-  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
-      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
-
-  _cameraSource = [[MPPCameraInputSource alloc] init];
-  [_cameraSource setDelegate:self queue:_videoQueue];
-  _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-  _cameraSource.cameraPosition = AVCaptureDevicePositionBack;
-  // The frame's native format is rotated with respect to the portrait orientation.
-  _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-
-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
-  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
-}
-
-// In this application, there is only one ViewController which has no navigation to other view
-// controllers, and there is only one View with live display showing the result of running the
-// MediaPipe graph on the live video feed. If more view controllers are needed later, the graph
-// setup/teardown and camera start/stop logic should be updated appropriately in response to the
-// appearance/disappearance of this ViewController, as viewWillAppear: can be invoked multiple times
-// depending on the application navigation flow in that case.
- (void)viewWillAppear:(BOOL)animated {
-  [super viewWillAppear:animated];
-
-  [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-    if (granted) {
-      [self startGraphAndCamera];
-      dispatch_async(dispatch_get_main_queue(), ^{
-        [_noCameraLabel setHidden:YES];
-      });
-    }
-  }];
-}
-
- (void)startGraphAndCamera {
-  // Start running self.mediapipeGraph.
-  NSError* error;
-  if (![self.mediapipeGraph startWithError:&error]) {
-    NSLog(@"Failed to start graph: %@", error);
-  }
-
-  // Start fetching frames from the camera.
-  dispatch_async(_videoQueue, ^{
-    [_cameraSource start];
-  });
-}
-
-#pragma mark - MPPGraphDelegate methods
-
-// Receives CVPixelBufferRef from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
-              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
-    // Display the captured image on the screen.
-    CVPixelBufferRetain(pixelBuffer);
-    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
-      CVPixelBufferRelease(pixelBuffer);
-    });
-  }
-}
-
-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
-@end
@@ -1,59 +0,0 @@
-// Copyright 2019 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.
-
-#import "AppDelegate.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
-  return YES;
-}
-
- (void)applicationWillResignActive:(UIApplication *)application {
-  // Sent when the application is about to move from active to inactive state. This can occur for
-  // certain types of temporary interruptions (such as an incoming phone call or SMS message) or
-  // when the user quits the application and it begins the transition to the background state. Use
-  // this method to pause ongoing tasks, disable timers, and invalidate graphics rendering
-  // callbacks. Games should use this method to pause the game.
-}
-
- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store
-  // enough application state information to restore your application to its current state in case
-  // it is terminated later. If your application supports background execution, this method is
-  // called instead of applicationWillTerminate: when the user quits.
-}
-
- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo
-  // many of the changes made on entering the background.
-}
-
- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If
-  // the application was previously in the background, optionally refresh the user interface.
-}
-
- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also
-  // applicationDidEnterBackground:.
-}
-
-@end
@@ -1,99 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -1,7 +0,0 @@
-{
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -33,12 +33,16 @@ alias(

 ios_application(
    name = "FaceDetectionCpuApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
    bundle_id = BUNDLE_ID_PREFIX + ".FaceDetectionCpu",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
    deps = [
@@ -49,32 +53,13 @@ ios_application(

 objc_library(
    name = "FaceDetectionCpuAppLibrary",
-    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
-    ],
-    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
-    ],
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/face_detection:mobile_cpu_binary_graph",
        "//mediapipe/models:face_detection_front.tflite",
        "//mediapipe/models:face_detection_front_labelmap.txt",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
    ] + select({
        "//mediapipe:ios_i386": [],
        "//mediapipe:ios_x86_64": [],
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>
@@ -2,41 +2,13 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-  <key>NSCameraUsageDescription</key>
-  <string>This app uses the camera to demonstrate live video processing.</string>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>$(EXECUTABLE_NAME)</string>
-  <key>CFBundleIdentifier</key>
-  <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>$(PRODUCT_NAME)</string>
-  <key>CFBundlePackageType</key>
-  <string>APPL</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleVersion</key>
-  <string>1</string>
-  <key>LSRequiresIPhoneOS</key>
-  <true/>
-  <key>UILaunchStoryboardName</key>
-  <string>LaunchScreen</string>
-  <key>UIMainStoryboardFile</key>
-  <string>Main</string>
-  <key>UIRequiredDeviceCapabilities</key>
-  <array>
-    <string>armv7</string>
-  </array>
-  <key>UISupportedInterfaceOrientations</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
-  <key>UISupportedInterfaceOrientations~ipad</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
+  <key>CameraPosition</key>
+  <string>front</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+  <key>GraphName</key>
+  <string>mobile_cpu</string>
 </dict>
 </plist>
@@ -1,19 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-@end
@@ -1,178 +0,0 @@
-// Copyright 2019 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.
-
-#import "ViewController.h"
-
-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-
-static NSString* const kGraphName = @"mobile_cpu";
-
-static const char* kInputStream = "input_video";
-static const char* kOutputStream = "output_video";
-static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
-
-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
-
-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
-#pragma mark - Cleanup methods
-
- (void)dealloc {
-  self.mediapipeGraph.delegate = nil;
-  [self.mediapipeGraph cancel];
-  // Ignore errors since we're cleaning up.
-  [self.mediapipeGraph closeAllInputStreamsWithError:nil];
-  [self.mediapipeGraph waitUntilDoneWithError:nil];
-}
-
-#pragma mark - MediaPipe graph methods
-
-+ (MPPGraph*)loadGraphFromResource:(NSString*)resource {
-  // Load the graph config resource.
-  NSError* configLoadError = nil;
-  NSBundle* bundle = [NSBundle bundleForClass:[self class]];
-  if (!resource || resource.length == 0) {
-    return nil;
-  }
-  NSURL* graphURL = [bundle URLForResource:resource withExtension:@"binarypb"];
-  NSData* data = [NSData dataWithContentsOfURL:graphURL options:0 error:&configLoadError];
-  if (!data) {
-    NSLog(@"Failed to load MediaPipe graph config: %@", configLoadError);
-    return nil;
-  }
-
-  // Parse the graph config resource into mediapipe::CalculatorGraphConfig proto object.
-  mediapipe::CalculatorGraphConfig config;
-  config.ParseFromArray(data.bytes, data.length);
-
-  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
-  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
-  return newGraph;
-}
-
-#pragma mark - UIViewController methods
-
- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
-
-  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
-      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
-
-  _cameraSource = [[MPPCameraInputSource alloc] init];
-  [_cameraSource setDelegate:self queue:_videoQueue];
-  _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-  _cameraSource.cameraPosition = AVCaptureDevicePositionFront;
-  // The frame's native format is rotated with respect to the portrait orientation.
-  _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-  // When using the front camera, mirror the input for a more natural look.
-  _cameraSource.videoMirrored = YES;
-
-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
-  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
-}
-
-// In this application, there is only one ViewController which has no navigation to other view
-// controllers, and there is only one View with live display showing the result of running the
-// MediaPipe graph on the live video feed. If more view controllers are needed later, the graph
-// setup/teardown and camera start/stop logic should be updated appropriately in response to the
-// appearance/disappearance of this ViewController, as viewWillAppear: can be invoked multiple times
-// depending on the application navigation flow in that case.
- (void)viewWillAppear:(BOOL)animated {
-  [super viewWillAppear:animated];
-
-  [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-    if (granted) {
-      [self startGraphAndCamera];
-      dispatch_async(dispatch_get_main_queue(), ^{
-        [_noCameraLabel setHidden:YES];
-      });
-    }
-  }];
-}
-
- (void)startGraphAndCamera {
-  // Start running self.mediapipeGraph.
-  NSError* error;
-  if (![self.mediapipeGraph startWithError:&error]) {
-    NSLog(@"Failed to start graph: %@", error);
-  }
-
-  // Start fetching frames from the camera.
-  dispatch_async(_videoQueue, ^{
-    [_cameraSource start];
-  });
-}
-
-#pragma mark - MPPGraphDelegate methods
-
-// Receives CVPixelBufferRef from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
-              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
-    // Display the captured image on the screen.
-    CVPixelBufferRetain(pixelBuffer);
-    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
-      CVPixelBufferRelease(pixelBuffer);
-    });
-  }
-}
-
-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
-@end
@@ -1,22 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-  @autoreleasepool {
-      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}
@@ -1,59 +0,0 @@
-// Copyright 2019 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.
-
-#import "AppDelegate.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
-  return YES;
-}
-
- (void)applicationWillResignActive:(UIApplication *)application {
-  // Sent when the application is about to move from active to inactive state. This can occur for
-  // certain types of temporary interruptions (such as an incoming phone call or SMS message) or
-  // when the user quits the application and it begins the transition to the background state. Use
-  // this method to pause ongoing tasks, disable timers, and invalidate graphics rendering
-  // callbacks. Games should use this method to pause the game.
-}
-
- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store
-  // enough application state information to restore your application to its current state in case
-  // it is terminated later. If your application supports background execution, this method is
-  // called instead of applicationWillTerminate: when the user quits.
-}
-
- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo
-  // many of the changes made on entering the background.
-}
-
- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If
-  // the application was previously in the background, optionally refresh the user interface.
-}
-
- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also
-  // applicationDidEnterBackground:.
-}
-
-@end
@@ -1,7 +0,0 @@
-{
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -33,12 +33,16 @@ alias(

 ios_application(
    name = "FaceDetectionGpuApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
    bundle_id = BUNDLE_ID_PREFIX + ".FaceDetectionGpu",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
    deps = [
@@ -49,32 +53,13 @@ ios_application(

 objc_library(
    name = "FaceDetectionGpuAppLibrary",
-    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
-    ],
-    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
-    ],
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/face_detection:mobile_gpu_binary_graph",
        "//mediapipe/models:face_detection_front.tflite",
        "//mediapipe/models:face_detection_front_labelmap.txt",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
    ] + select({
        "//mediapipe:ios_i386": [],
        "//mediapipe:ios_x86_64": [],
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="EfB-xq-knP">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                <subviews>
-                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Camera access needed for this demo. Please enable camera access in the Settings app." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="emf-N5-sEd">
-                                        <rect key="frame" x="57" y="258" width="260" height="151"/>
-                                        <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                        <nil key="highlightedColor"/>
-                                    </label>
-                                </subviews>
-                                <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <accessibility key="accessibilityConfiguration" label="PreviewDisplayView">
-                                    <bool key="isElement" value="YES"/>
-                                </accessibility>
-                            </view>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="48.799999999999997" y="20.239880059970016"/>
-        </scene>
-    </scenes>
-</document>
@@ -2,41 +2,13 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-  <key>NSCameraUsageDescription</key>
-  <string>This app uses the camera to demonstrate live video processing.</string>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>$(EXECUTABLE_NAME)</string>
-  <key>CFBundleIdentifier</key>
-  <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>$(PRODUCT_NAME)</string>
-  <key>CFBundlePackageType</key>
-  <string>APPL</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleVersion</key>
-  <string>1</string>
-  <key>LSRequiresIPhoneOS</key>
-  <true/>
-  <key>UILaunchStoryboardName</key>
-  <string>LaunchScreen</string>
-  <key>UIMainStoryboardFile</key>
-  <string>Main</string>
-  <key>UIRequiredDeviceCapabilities</key>
-  <array>
-    <string>armv7</string>
-  </array>
-  <key>UISupportedInterfaceOrientations</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
-  <key>UISupportedInterfaceOrientations~ipad</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
+  <key>CameraPosition</key>
+  <string>front</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+  <key>GraphName</key>
+  <string>mobile_gpu</string>
 </dict>
 </plist>
@@ -1,19 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-@end
@@ -1,178 +0,0 @@
-// Copyright 2019 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.
-
-#import "ViewController.h"
-
-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-
-static NSString* const kGraphName = @"mobile_gpu";
-
-static const char* kInputStream = "input_video";
-static const char* kOutputStream = "output_video";
-static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
-
-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
-
-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
-#pragma mark - Cleanup methods
-
- (void)dealloc {
-  self.mediapipeGraph.delegate = nil;
-  [self.mediapipeGraph cancel];
-  // Ignore errors since we're cleaning up.
-  [self.mediapipeGraph closeAllInputStreamsWithError:nil];
-  [self.mediapipeGraph waitUntilDoneWithError:nil];
-}
-
-#pragma mark - MediaPipe graph methods
-
-+ (MPPGraph*)loadGraphFromResource:(NSString*)resource {
-  // Load the graph config resource.
-  NSError* configLoadError = nil;
-  NSBundle* bundle = [NSBundle bundleForClass:[self class]];
-  if (!resource || resource.length == 0) {
-    return nil;
-  }
-  NSURL* graphURL = [bundle URLForResource:resource withExtension:@"binarypb"];
-  NSData* data = [NSData dataWithContentsOfURL:graphURL options:0 error:&configLoadError];
-  if (!data) {
-    NSLog(@"Failed to load MediaPipe graph config: %@", configLoadError);
-    return nil;
-  }
-
-  // Parse the graph config resource into mediapipe::CalculatorGraphConfig proto object.
-  mediapipe::CalculatorGraphConfig config;
-  config.ParseFromArray(data.bytes, data.length);
-
-  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
-  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
-  return newGraph;
-}
-
-#pragma mark - UIViewController methods
-
- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
-
-  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
-      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
-
-  _cameraSource = [[MPPCameraInputSource alloc] init];
-  [_cameraSource setDelegate:self queue:_videoQueue];
-  _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-  _cameraSource.cameraPosition = AVCaptureDevicePositionFront;
-  // The frame's native format is rotated with respect to the portrait orientation.
-  _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-  // When using the front camera, mirror the input for a more natural look.
-  _cameraSource.videoMirrored = YES;
-
-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
-  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
-}
-
-// In this application, there is only one ViewController which has no navigation to other view
-// controllers, and there is only one View with live display showing the result of running the
-// MediaPipe graph on the live video feed. If more view controllers are needed later, the graph
-// setup/teardown and camera start/stop logic should be updated appropriately in response to the
-// appearance/disappearance of this ViewController, as viewWillAppear: can be invoked multiple times
-// depending on the application navigation flow in that case.
- (void)viewWillAppear:(BOOL)animated {
-  [super viewWillAppear:animated];
-
-  [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-    if (granted) {
-      [self startGraphAndCamera];
-      dispatch_async(dispatch_get_main_queue(), ^{
-        [_noCameraLabel setHidden:YES];
-      });
-    }
-  }];
-}
-
- (void)startGraphAndCamera {
-  // Start running self.mediapipeGraph.
-  NSError* error;
-  if (![self.mediapipeGraph startWithError:&error]) {
-    NSLog(@"Failed to start graph: %@", error);
-  }
-
-  // Start fetching frames from the camera.
-  dispatch_async(_videoQueue, ^{
-    [_cameraSource start];
-  });
-}
-
-#pragma mark - MPPGraphDelegate methods
-
-// Receives CVPixelBufferRef from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
-              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
-    // Display the captured image on the screen.
-    CVPixelBufferRetain(pixelBuffer);
-    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
-      CVPixelBufferRelease(pixelBuffer);
-    });
-  }
-}
-
-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
-@end
@@ -1,22 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-  @autoreleasepool {
-      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}
@@ -1,59 +0,0 @@
-// Copyright 2019 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.
-
-#import "AppDelegate.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
-  return YES;
-}
-
- (void)applicationWillResignActive:(UIApplication *)application {
-  // Sent when the application is about to move from active to inactive state. This can occur for
-  // certain types of temporary interruptions (such as an incoming phone call or SMS message) or
-  // when the user quits the application and it begins the transition to the background state. Use
-  // this method to pause ongoing tasks, disable timers, and invalidate graphics rendering
-  // callbacks. Games should use this method to pause the game.
-}
-
- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store
-  // enough application state information to restore your application to its current state in case
-  // it is terminated later. If your application supports background execution, this method is
-  // called instead of applicationWillTerminate: when the user quits.
-}
-
- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo
-  // many of the changes made on entering the background.
-}
-
- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If
-  // the application was previously in the background, optionally refresh the user interface.
-}
-
- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also
-  // applicationDidEnterBackground:.
-}
-
-@end
@@ -1,99 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -1,7 +0,0 @@
-{
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -33,12 +33,16 @@ alias(

 ios_application(
    name = "FaceMeshGpuApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
    bundle_id = BUNDLE_ID_PREFIX + ".FaceMeshGpu",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
    deps = [
@@ -50,31 +54,18 @@ ios_application(
 objc_library(
    name = "FaceMeshGpuAppLibrary",
    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
+        "FaceMeshGpuViewController.mm",
    ],
    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
+        "FaceMeshGpuViewController.h",
    ],
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/face_mesh:face_mesh_mobile_gpu_binary_graph",
        "//mediapipe/modules/face_detection:face_detection_front.tflite",
        "//mediapipe/modules/face_landmark:face_landmark.tflite",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
    ] + select({
        "//mediapipe:ios_i386": [],
        "//mediapipe:ios_x86_64": [],
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="EfB-xq-knP">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                <subviews>
-                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Camera access needed for this demo. Please enable camera access in the Settings app." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="emf-N5-sEd">
-                                        <rect key="frame" x="57" y="258" width="260" height="151"/>
-                                        <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                        <nil key="highlightedColor"/>
-                                    </label>
-                                </subviews>
-                                <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <accessibility key="accessibilityConfiguration" label="PreviewDisplayView">
-                                    <bool key="isElement" value="YES"/>
-                                </accessibility>
-                            </view>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="48.799999999999997" y="20.239880059970016"/>
-        </scene>
-    </scenes>
-</document>
@@ -14,8 +14,8 @@

 #import <UIKit/UIKit.h>

-@interface AppDelegate : UIResponder <UIApplicationDelegate>
+#import "mediapipe/examples/ios/common/CommonViewController.h"

-@property(strong, nonatomic) UIWindow *window;
+@interface FaceMeshGpuViewController : CommonViewController

@end
@@ -0,0 +1,65 @@
+// Copyright 2019 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.
+
+#import "FaceMeshGpuViewController.h"
+
+#include "mediapipe/framework/formats/landmark.pb.h"
+
+static NSString* const kGraphName = @"face_mesh_mobile_gpu";
+
+static const char* kNumFacesInputSidePacket = "num_faces";
+static const char* kLandmarksOutputStream = "multi_face_landmarks";
+
+// Max number of faces to detect/process.
+static const int kNumFaces = 1;
+
+@implementation FaceMeshGpuViewController
+
+#pragma mark - UIViewController methods
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  [self.mediapipeGraph setSidePacket:(mediapipe::MakePacket<int>(kNumFaces))
+                               named:kNumFacesInputSidePacket];
+  [self.mediapipeGraph addFrameOutputStream:kLandmarksOutputStream
+                           outputPacketType:MPPPacketTypeRaw];
+}
+
+#pragma mark - MPPGraphDelegate methods
+
+// Receives a raw packet from the MediaPipe graph. Invoked on a MediaPipe worker thread.
+- (void)mediapipeGraph:(MPPGraph*)graph
+     didOutputPacket:(const ::mediapipe::Packet&)packet
+          fromStream:(const std::string&)streamName {
+  if (streamName == kLandmarksOutputStream) {
+    if (packet.IsEmpty()) {
+      NSLog(@"[TS:%lld] No face landmarks", packet.Timestamp().Value());
+      return;
+    }
+    const auto& multi_face_landmarks = packet.Get<std::vector<::mediapipe::NormalizedLandmarkList>>();
+    NSLog(@"[TS:%lld] Number of face instances with landmarks: %lu", packet.Timestamp().Value(),
+          multi_face_landmarks.size());
+    for (int face_index = 0; face_index < multi_face_landmarks.size(); ++face_index) {
+      const auto& landmarks = multi_face_landmarks[face_index];
+      NSLog(@"\tNumber of landmarks for face[%d]: %d", face_index, landmarks.landmark_size());
+      for (int i = 0; i < landmarks.landmark_size(); ++i) {
+        NSLog(@"\t\tLandmark[%d]: (%f, %f, %f)", i, landmarks.landmark(i).x(),
+              landmarks.landmark(i).y(), landmarks.landmark(i).z());
+      }
+    }
+  }
+}
+
+@end
@@ -2,41 +2,15 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-  <key>NSCameraUsageDescription</key>
-  <string>This app uses the camera to demonstrate live video processing.</string>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>$(EXECUTABLE_NAME)</string>
-  <key>CFBundleIdentifier</key>
-  <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>$(PRODUCT_NAME)</string>
-  <key>CFBundlePackageType</key>
-  <string>APPL</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleVersion</key>
-  <string>1</string>
-  <key>LSRequiresIPhoneOS</key>
-  <true/>
-  <key>UILaunchStoryboardName</key>
-  <string>LaunchScreen</string>
-  <key>UIMainStoryboardFile</key>
-  <string>Main</string>
-  <key>UIRequiredDeviceCapabilities</key>
-  <array>
-    <string>armv7</string>
-  </array>
-  <key>UISupportedInterfaceOrientations</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
-  <key>UISupportedInterfaceOrientations~ipad</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
+  <key>CameraPosition</key>
+  <string>front</string>
+  <key>MainViewController</key>
+  <string>FaceMeshGpuViewController</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+  <key>GraphName</key>
+  <string>face_mesh_mobile_gpu</string>
 </dict>
 </plist>
@@ -1,19 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-@end
@@ -1,210 +0,0 @@
-// Copyright 2019 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.
-
-#import "ViewController.h"
-
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-
-#include "mediapipe/framework/formats/landmark.pb.h"
-
-static NSString* const kGraphName = @"face_mesh_mobile_gpu";
-
-static const char* kInputStream = "input_video";
-static const char* kNumFacesInputSidePacket = "num_faces";
-static const char* kOutputStream = "output_video";
-static const char* kLandmarksOutputStream = "multi_face_landmarks";
-static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
-
-// Max number of faces to detect/process.
-static const int kNumFaces = 1;
-
-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
-
-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
-#pragma mark - Cleanup methods
-
- (void)dealloc {
-  self.mediapipeGraph.delegate = nil;
-  [self.mediapipeGraph cancel];
-  // Ignore errors since we're cleaning up.
-  [self.mediapipeGraph closeAllInputStreamsWithError:nil];
-  [self.mediapipeGraph waitUntilDoneWithError:nil];
-}
-
-#pragma mark - MediaPipe graph methods
-
-+ (MPPGraph*)loadGraphFromResource:(NSString*)resource {
-  // Load the graph config resource.
-  NSError* configLoadError = nil;
-  NSBundle* bundle = [NSBundle bundleForClass:[self class]];
-  if (!resource || resource.length == 0) {
-    return nil;
-  }
-  NSURL* graphURL = [bundle URLForResource:resource withExtension:@"binarypb"];
-  NSData* data = [NSData dataWithContentsOfURL:graphURL options:0 error:&configLoadError];
-  if (!data) {
-    NSLog(@"Failed to load MediaPipe graph config: %@", configLoadError);
-    return nil;
-  }
-
-  // Parse the graph config resource into mediapipe::CalculatorGraphConfig proto object.
-  mediapipe::CalculatorGraphConfig config;
-  config.ParseFromArray(data.bytes, data.length);
-
-  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
-  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
-  [newGraph addFrameOutputStream:kLandmarksOutputStream outputPacketType:MPPPacketTypeRaw];
-  [newGraph setSidePacket:(mediapipe::MakePacket<int>(kNumFaces)) named:kNumFacesInputSidePacket];
-  return newGraph;
-}
-
-#pragma mark - UIViewController methods
-
- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
-
-  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
-      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
-
-  _cameraSource = [[MPPCameraInputSource alloc] init];
-  [_cameraSource setDelegate:self queue:_videoQueue];
-  _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-  _cameraSource.cameraPosition = AVCaptureDevicePositionFront;
-  // The frame's native format is rotated with respect to the portrait orientation.
-  _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-  // When using the front camera, mirror the input for a more natural look.
-  _cameraSource.videoMirrored = YES;
-
-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
-  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
-}
-
-// In this application, there is only one ViewController which has no navigation to other view
-// controllers, and there is only one View with live display showing the result of running the
-// MediaPipe graph on the live video feed. If more view controllers are needed later, the graph
-// setup/teardown and camera start/stop logic should be updated appropriately in response to the
-// appearance/disappearance of this ViewController, as viewWillAppear: can be invoked multiple times
-// depending on the application navigation flow in that case.
- (void)viewWillAppear:(BOOL)animated {
-  [super viewWillAppear:animated];
-
-  [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-    if (granted) {
-      [self startGraphAndCamera];
-      dispatch_async(dispatch_get_main_queue(), ^{
-        _noCameraLabel.hidden = YES;
-      });
-    }
-  }];
-}
-
- (void)startGraphAndCamera {
-  // Start running self.mediapipeGraph.
-  NSError* error;
-  if (![self.mediapipeGraph startWithError:&error]) {
-    NSLog(@"Failed to start graph: %@", error);
-  }
-
-  // Start fetching frames from the camera.
-  dispatch_async(_videoQueue, ^{
-    [_cameraSource start];
-  });
-}
-
-#pragma mark - MPPGraphDelegate methods
-
-// Receives CVPixelBufferRef from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
-              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
-    // Display the captured image on the screen.
-    CVPixelBufferRetain(pixelBuffer);
-    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
-      CVPixelBufferRelease(pixelBuffer);
-    });
-  }
-}
-
-// Receives a raw packet from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-     didOutputPacket:(const ::mediapipe::Packet&)packet
-          fromStream:(const std::string&)streamName {
-  if (streamName == kLandmarksOutputStream) {
-    if (packet.IsEmpty()) {
-      NSLog(@"[TS:%lld] No face landmarks", packet.Timestamp().Value());
-      return;
-    }
-    const auto& multi_face_landmarks = packet.Get<std::vector<::mediapipe::NormalizedLandmarkList>>();
-    NSLog(@"[TS:%lld] Number of face instances with landmarks: %lu", packet.Timestamp().Value(),
-          multi_face_landmarks.size());
-    for (int face_index = 0; face_index < multi_face_landmarks.size(); ++face_index) {
-      const auto& landmarks = multi_face_landmarks[face_index];
-      NSLog(@"\tNumber of landmarks for face[%d]: %d", face_index, landmarks.landmark_size());
-      for (int i = 0; i < landmarks.landmark_size(); ++i) {
-        NSLog(@"\t\tLandmark[%d]: (%f, %f, %f)", i, landmarks.landmark(i).x(),
-              landmarks.landmark(i).y(), landmarks.landmark(i).z());
-      }
-    }
-  }
-}
-
-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
-@end
@@ -1,22 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-  @autoreleasepool {
-      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}
@@ -1,59 +0,0 @@
-// Copyright 2019 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.
-
-#import "AppDelegate.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
-  return YES;
-}
-
- (void)applicationWillResignActive:(UIApplication *)application {
-  // Sent when the application is about to move from active to inactive state. This can occur for
-  // certain types of temporary interruptions (such as an incoming phone call or SMS message) or
-  // when the user quits the application and it begins the transition to the background state. Use
-  // this method to pause ongoing tasks, disable timers, and invalidate graphics rendering
-  // callbacks. Games should use this method to pause the game.
-}
-
- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store
-  // enough application state information to restore your application to its current state in case
-  // it is terminated later. If your application supports background execution, this method is
-  // called instead of applicationWillTerminate: when the user quits.
-}
-
- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo
-  // many of the changes made on entering the background.
-}
-
- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If
-  // the application was previously in the background, optionally refresh the user interface.
-}
-
- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also
-  // applicationDidEnterBackground:.
-}
-
-@end
@@ -1,99 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -1,7 +0,0 @@
-{
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -33,12 +33,16 @@ alias(

 ios_application(
    name = "HandDetectionGpuApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
    bundle_id = BUNDLE_ID_PREFIX + ".HandDetectionGpu",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
    deps = [
@@ -49,32 +53,13 @@ ios_application(

 objc_library(
    name = "HandDetectionGpuAppLibrary",
-    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
-    ],
-    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
-    ],
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/hand_tracking:hand_detection_mobile_gpu_binary_graph",
        "//mediapipe/models:palm_detection.tflite",
        "//mediapipe/models:palm_detection_labelmap.txt",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
    ] + select({
        "//mediapipe:ios_i386": [],
        "//mediapipe:ios_x86_64": [],
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="EfB-xq-knP">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                <subviews>
-                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Camera access needed for this demo. Please enable camera access in the Settings app." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="emf-N5-sEd">
-                                        <rect key="frame" x="57" y="258" width="260" height="151"/>
-                                        <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                        <nil key="highlightedColor"/>
-                                    </label>
-                                </subviews>
-                                <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <accessibility key="accessibilityConfiguration" label="PreviewDisplayView">
-                                    <bool key="isElement" value="YES"/>
-                                </accessibility>
-                            </view>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="48.799999999999997" y="20.239880059970016"/>
-        </scene>
-    </scenes>
-</document>
@@ -2,41 +2,13 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-  <key>NSCameraUsageDescription</key>
-  <string>This app uses the camera to demonstrate live video processing.</string>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>$(EXECUTABLE_NAME)</string>
-  <key>CFBundleIdentifier</key>
-  <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>$(PRODUCT_NAME)</string>
-  <key>CFBundlePackageType</key>
-  <string>APPL</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleVersion</key>
-  <string>1</string>
-  <key>LSRequiresIPhoneOS</key>
-  <true/>
-  <key>UILaunchStoryboardName</key>
-  <string>LaunchScreen</string>
-  <key>UIMainStoryboardFile</key>
-  <string>Main</string>
-  <key>UIRequiredDeviceCapabilities</key>
-  <array>
-    <string>armv7</string>
-  </array>
-  <key>UISupportedInterfaceOrientations</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
-  <key>UISupportedInterfaceOrientations~ipad</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
+  <key>CameraPosition</key>
+  <string>front</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+  <key>GraphName</key>
+  <string>hand_detection_mobile_gpu</string>
 </dict>
 </plist>
@@ -1,19 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-@end
@@ -1,178 +0,0 @@
-// Copyright 2019 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.
-
-#import "ViewController.h"
-
-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-
-static NSString* const kGraphName = @"hand_detection_mobile_gpu";
-
-static const char* kInputStream = "input_video";
-static const char* kOutputStream = "output_video";
-static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
-
-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
-
-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
-#pragma mark - Cleanup methods
-
- (void)dealloc {
-  self.mediapipeGraph.delegate = nil;
-  [self.mediapipeGraph cancel];
-  // Ignore errors since we're cleaning up.
-  [self.mediapipeGraph closeAllInputStreamsWithError:nil];
-  [self.mediapipeGraph waitUntilDoneWithError:nil];
-}
-
-#pragma mark - MediaPipe graph methods
-
-+ (MPPGraph*)loadGraphFromResource:(NSString*)resource {
-  // Load the graph config resource.
-  NSError* configLoadError = nil;
-  NSBundle* bundle = [NSBundle bundleForClass:[self class]];
-  if (!resource || resource.length == 0) {
-    return nil;
-  }
-  NSURL* graphURL = [bundle URLForResource:resource withExtension:@"binarypb"];
-  NSData* data = [NSData dataWithContentsOfURL:graphURL options:0 error:&configLoadError];
-  if (!data) {
-    NSLog(@"Failed to load MediaPipe graph config: %@", configLoadError);
-    return nil;
-  }
-
-  // Parse the graph config resource into mediapipe::CalculatorGraphConfig proto object.
-  mediapipe::CalculatorGraphConfig config;
-  config.ParseFromArray(data.bytes, data.length);
-
-  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
-  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
-  return newGraph;
-}
-
-#pragma mark - UIViewController methods
-
- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
-
-  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
-      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
-
-  _cameraSource = [[MPPCameraInputSource alloc] init];
-  [_cameraSource setDelegate:self queue:_videoQueue];
-  _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-  _cameraSource.cameraPosition = AVCaptureDevicePositionFront;
-  // The frame's native format is rotated with respect to the portrait orientation.
-  _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-  // When using the front camera, mirror the input for a more natural look.
-  _cameraSource.videoMirrored = YES;
-
-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
-  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
-}
-
-// In this application, there is only one ViewController which has no navigation to other view
-// controllers, and there is only one View with live display showing the result of running the
-// MediaPipe graph on the live video feed. If more view controllers are needed later, the graph
-// setup/teardown and camera start/stop logic should be updated appropriately in response to the
-// appearance/disappearance of this ViewController, as viewWillAppear: can be invoked multiple times
-// depending on the application navigation flow in that case.
- (void)viewWillAppear:(BOOL)animated {
-  [super viewWillAppear:animated];
-
-  [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-    if (granted) {
-      [self startGraphAndCamera];
-      dispatch_async(dispatch_get_main_queue(), ^{
-        _noCameraLabel.hidden = YES;
-      });
-    }
-  }];
-}
-
- (void)startGraphAndCamera {
-  // Start running self.mediapipeGraph.
-  NSError* error;
-  if (![self.mediapipeGraph startWithError:&error]) {
-    NSLog(@"Failed to start graph: %@", error);
-  }
-
-  // Start fetching frames from the camera.
-  dispatch_async(_videoQueue, ^{
-    [_cameraSource start];
-  });
-}
-
-#pragma mark - MPPGraphDelegate methods
-
-// Receives CVPixelBufferRef from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
-              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
-    // Display the captured image on the screen.
-    CVPixelBufferRetain(pixelBuffer);
-    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
-      CVPixelBufferRelease(pixelBuffer);
-    });
-  }
-}
-
-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
-@end
@@ -1,22 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-  @autoreleasepool {
-      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}
@@ -1,21 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface AppDelegate : UIResponder <UIApplicationDelegate>
-
-@property(strong, nonatomic) UIWindow *window;
-
-@end
@@ -1,59 +0,0 @@
-// Copyright 2019 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.
-
-#import "AppDelegate.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
-  return YES;
-}
-
- (void)applicationWillResignActive:(UIApplication *)application {
-  // Sent when the application is about to move from active to inactive state. This can occur for
-  // certain types of temporary interruptions (such as an incoming phone call or SMS message) or
-  // when the user quits the application and it begins the transition to the background state. Use
-  // this method to pause ongoing tasks, disable timers, and invalidate graphics rendering
-  // callbacks. Games should use this method to pause the game.
-}
-
- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store
-  // enough application state information to restore your application to its current state in case
-  // it is terminated later. If your application supports background execution, this method is
-  // called instead of applicationWillTerminate: when the user quits.
-}
-
- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo
-  // many of the changes made on entering the background.
-}
-
- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If
-  // the application was previously in the background, optionally refresh the user interface.
-}
-
- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also
-  // applicationDidEnterBackground:.
-}
-
-@end
@@ -1,99 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -1,7 +0,0 @@
-{
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -33,12 +33,16 @@ alias(

 ios_application(
    name = "HandTrackingGpuApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
    bundle_id = BUNDLE_ID_PREFIX + ".HandTrackingGpu",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
    deps = [
@@ -50,33 +54,20 @@ ios_application(
 objc_library(
    name = "HandTrackingGpuAppLibrary",
    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
+        "HandTrackingViewController.mm",
    ],
    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
+        "HandTrackingViewController.h",
    ],
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/hand_tracking:hand_tracking_mobile_gpu_binary_graph",
        "//mediapipe/models:hand_landmark.tflite",
        "//mediapipe/models:handedness.txt",
        "//mediapipe/models:palm_detection.tflite",
        "//mediapipe/models:palm_detection_labelmap.txt",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
    ] + select({
        "//mediapipe:ios_i386": [],
        "//mediapipe:ios_x86_64": [],
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="EfB-xq-knP">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                <subviews>
-                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Camera access needed for this demo. Please enable camera access in the Settings app." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="emf-N5-sEd">
-                                        <rect key="frame" x="57" y="258" width="260" height="151"/>
-                                        <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                        <nil key="highlightedColor"/>
-                                    </label>
-                                </subviews>
-                                <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <accessibility key="accessibilityConfiguration" label="PreviewDisplayView">
-                                    <bool key="isElement" value="YES"/>
-                                </accessibility>
-                            </view>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="48.799999999999997" y="20.239880059970016"/>
-        </scene>
-    </scenes>
-</document>
@@ -14,8 +14,8 @@

 #import <UIKit/UIKit.h>

-@interface AppDelegate : UIResponder <UIApplicationDelegate>
+#import "mediapipe/examples/ios/common/CommonViewController.h"

-@property(strong, nonatomic) UIWindow *window;
+@interface HandTrackingViewController : CommonViewController

@end
@@ -0,0 +1,53 @@
+// Copyright 2019 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.
+
+#import "HandTrackingViewController.h"
+
+#include "mediapipe/framework/formats/landmark.pb.h"
+
+static const char* kLandmarksOutputStream = "hand_landmarks";
+
+@implementation HandTrackingViewController
+
+#pragma mark - UIViewController methods
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  [self.mediapipeGraph addFrameOutputStream:kLandmarksOutputStream
+                           outputPacketType:MPPPacketTypeRaw];
+}
+
+#pragma mark - MPPGraphDelegate methods
+
+// Receives a raw packet from the MediaPipe graph. Invoked on a MediaPipe worker thread.
+- (void)mediapipeGraph:(MPPGraph*)graph
+     didOutputPacket:(const ::mediapipe::Packet&)packet
+          fromStream:(const std::string&)streamName {
+  if (streamName == kLandmarksOutputStream) {
+    if (packet.IsEmpty()) {
+      NSLog(@"[TS:%lld] No hand landmarks", packet.Timestamp().Value());
+      return;
+    }
+    const auto& landmarks = packet.Get<::mediapipe::NormalizedLandmarkList>();
+    NSLog(@"[TS:%lld] Number of landmarks on hand: %d", packet.Timestamp().Value(),
+          landmarks.landmark_size());
+    for (int i = 0; i < landmarks.landmark_size(); ++i) {
+      NSLog(@"\tLandmark[%d]: (%f, %f, %f)", i, landmarks.landmark(i).x(),
+            landmarks.landmark(i).y(), landmarks.landmark(i).z());
+    }
+  }
+}
+
+@end
@@ -2,41 +2,15 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-  <key>NSCameraUsageDescription</key>
-  <string>This app uses the camera to demonstrate live video processing.</string>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>$(EXECUTABLE_NAME)</string>
-  <key>CFBundleIdentifier</key>
-  <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>$(PRODUCT_NAME)</string>
-  <key>CFBundlePackageType</key>
-  <string>APPL</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleVersion</key>
-  <string>1</string>
-  <key>LSRequiresIPhoneOS</key>
-  <true/>
-  <key>UILaunchStoryboardName</key>
-  <string>LaunchScreen</string>
-  <key>UIMainStoryboardFile</key>
-  <string>Main</string>
-  <key>UIRequiredDeviceCapabilities</key>
-  <array>
-    <string>armv7</string>
-  </array>
-  <key>UISupportedInterfaceOrientations</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
-  <key>UISupportedInterfaceOrientations~ipad</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
+  <key>CameraPosition</key>
+  <string>front</string>
+  <key>MainViewController</key>
+  <string>HandTrackingViewController</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphName</key>
+  <string>hand_tracking_mobile_gpu</string>
 </dict>
 </plist>
@@ -1,19 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-@end
@@ -1,201 +0,0 @@
-// Copyright 2019 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.
-
-#import "ViewController.h"
-
-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-
-#include "mediapipe/framework/formats/landmark.pb.h"
-
-static NSString* const kGraphName = @"hand_tracking_mobile_gpu";
-
-static const char* kInputStream = "input_video";
-static const char* kOutputStream = "output_video";
-static const char* kLandmarksOutputStream = "hand_landmarks";
-static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
-
-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
-
-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
-#pragma mark - Cleanup methods
-
- (void)dealloc {
-  self.mediapipeGraph.delegate = nil;
-  [self.mediapipeGraph cancel];
-  // Ignore errors since we're cleaning up.
-  [self.mediapipeGraph closeAllInputStreamsWithError:nil];
-  [self.mediapipeGraph waitUntilDoneWithError:nil];
-}
-
-#pragma mark - MediaPipe graph methods
-
-+ (MPPGraph*)loadGraphFromResource:(NSString*)resource {
-  // Load the graph config resource.
-  NSError* configLoadError = nil;
-  NSBundle* bundle = [NSBundle bundleForClass:[self class]];
-  if (!resource || resource.length == 0) {
-    return nil;
-  }
-  NSURL* graphURL = [bundle URLForResource:resource withExtension:@"binarypb"];
-  NSData* data = [NSData dataWithContentsOfURL:graphURL options:0 error:&configLoadError];
-  if (!data) {
-    NSLog(@"Failed to load MediaPipe graph config: %@", configLoadError);
-    return nil;
-  }
-
-  // Parse the graph config resource into mediapipe::CalculatorGraphConfig proto object.
-  mediapipe::CalculatorGraphConfig config;
-  config.ParseFromArray(data.bytes, data.length);
-
-  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
-  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
-  [newGraph addFrameOutputStream:kLandmarksOutputStream outputPacketType:MPPPacketTypeRaw];
-  return newGraph;
-}
-
-#pragma mark - UIViewController methods
-
- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
-
-  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
-      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
-
-  _cameraSource = [[MPPCameraInputSource alloc] init];
-  [_cameraSource setDelegate:self queue:_videoQueue];
-  _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-  _cameraSource.cameraPosition = AVCaptureDevicePositionFront;
-  // The frame's native format is rotated with respect to the portrait orientation.
-  _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-  // When using the front camera, mirror the input for a more natural look.
-  _cameraSource.videoMirrored = YES;
-
-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
-  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
-}
-
-// In this application, there is only one ViewController which has no navigation to other view
-// controllers, and there is only one View with live display showing the result of running the
-// MediaPipe graph on the live video feed. If more view controllers are needed later, the graph
-// setup/teardown and camera start/stop logic should be updated appropriately in response to the
-// appearance/disappearance of this ViewController, as viewWillAppear: can be invoked multiple times
-// depending on the application navigation flow in that case.
- (void)viewWillAppear:(BOOL)animated {
-  [super viewWillAppear:animated];
-
-  [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-    if (granted) {
-      [self startGraphAndCamera];
-      dispatch_async(dispatch_get_main_queue(), ^{
-        _noCameraLabel.hidden = YES;
-      });
-    }
-  }];
-}
-
- (void)startGraphAndCamera {
-  // Start running self.mediapipeGraph.
-  NSError* error;
-  if (![self.mediapipeGraph startWithError:&error]) {
-    NSLog(@"Failed to start graph: %@", error);
-  }
-
-  // Start fetching frames from the camera.
-  dispatch_async(_videoQueue, ^{
-    [_cameraSource start];
-  });
-}
-
-#pragma mark - MPPGraphDelegate methods
-
-// Receives CVPixelBufferRef from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
-              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
-    // Display the captured image on the screen.
-    CVPixelBufferRetain(pixelBuffer);
-    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
-      CVPixelBufferRelease(pixelBuffer);
-    });
-  }
-}
-
-// Receives a raw packet from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-     didOutputPacket:(const ::mediapipe::Packet&)packet
-          fromStream:(const std::string&)streamName {
-  if (streamName == kLandmarksOutputStream) {
-    if (packet.IsEmpty()) {
-      NSLog(@"[TS:%lld] No hand landmarks", packet.Timestamp().Value());
-      return;
-    }
-    const auto& landmarks = packet.Get<::mediapipe::NormalizedLandmarkList>();
-    NSLog(@"[TS:%lld] Number of landmarks on hand: %d", packet.Timestamp().Value(),
-          landmarks.landmark_size());
-    for (int i = 0; i < landmarks.landmark_size(); ++i) {
-      NSLog(@"\tLandmark[%d]: (%f, %f, %f)", i, landmarks.landmark(i).x(),
-            landmarks.landmark(i).y(), landmarks.landmark(i).z());
-    }
-  }
-}
-
-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
-@end
@@ -1,22 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-  @autoreleasepool {
-      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}
@@ -27,49 +27,34 @@ licenses(["notice"])  # Apache 2.0
 MIN_IOS_VERSION = "10.0"

 alias(
-    name = "edgedetectiongpu",
-    actual = "EdgeDetectionGpuApp",
+    name = "helloworld",
+    actual = "HelloWorldApp",
 )

 ios_application(
-    name = "EdgeDetectionGpuApp",
-    bundle_id = BUNDLE_ID_PREFIX + ".EdgeDetectionGpu",
+    name = "HelloWorldApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
+    bundle_id = BUNDLE_ID_PREFIX + ".HelloWorld",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
-    deps = [":EdgeDetectionGpuAppLibrary"],
+    deps = [":HelloWorldAppLibrary"],
 )

 objc_library(
-    name = "EdgeDetectionGpuAppLibrary",
-    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
-    ],
-    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
-    ],
+    name = "HelloWorldAppLibrary",
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/edge_detection:mobile_gpu_binary_graph",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
        "//mediapipe/graphs/edge_detection:mobile_calculators",
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
    ],
 )
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CameraPosition</key>
+  <string>back</string>
+  <key>GraphName</key>
+  <string>mobile_gpu</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+</dict>
+</plist>
@@ -1,21 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface AppDelegate : UIResponder <UIApplicationDelegate>
-
-@property(strong, nonatomic) UIWindow *window;
-
-@end
@@ -1,59 +0,0 @@
-// Copyright 2019 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.
-
-#import "AppDelegate.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
-  return YES;
-}
-
- (void)applicationWillResignActive:(UIApplication *)application {
-  // Sent when the application is about to move from active to inactive state. This can occur for
-  // certain types of temporary interruptions (such as an incoming phone call or SMS message) or
-  // when the user quits the application and it begins the transition to the background state. Use
-  // this method to pause ongoing tasks, disable timers, and invalidate graphics rendering
-  // callbacks. Games should use this method to pause the game.
-}
-
- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store
-  // enough application state information to restore your application to its current state in case
-  // it is terminated later. If your application supports background execution, this method is
-  // called instead of applicationWillTerminate: when the user quits.
-}
-
- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo
-  // many of the changes made on entering the background.
-}
-
- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If
-  // the application was previously in the background, optionally refresh the user interface.
-}
-
- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also
-  // applicationDidEnterBackground:.
-}
-
-@end
@@ -1,99 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -1,7 +0,0 @@
-{
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -33,12 +33,16 @@ alias(

 ios_application(
    name = "IrisTrackingGpuApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
    bundle_id = BUNDLE_ID_PREFIX + ".IrisTrackingGpu",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
    deps = [
@@ -50,32 +54,19 @@ ios_application(
 objc_library(
    name = "IrisTrackingGpuAppLibrary",
    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
+        "IrisTrackingViewController.mm",
    ],
    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
+        "IrisTrackingViewController.h",
    ],
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/iris_tracking:iris_tracking_gpu.binarypb",
        "//mediapipe/modules/face_detection:face_detection_front.tflite",
        "//mediapipe/modules/face_landmark:face_landmark.tflite",
        "//mediapipe/modules/iris_landmark:iris_landmark.tflite",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
    ] + select({
        "//mediapipe:ios_i386": [],
        "//mediapipe:ios_x86_64": [],
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="EfB-xq-knP">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                <subviews>
-                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Camera access needed for this demo. Please enable camera access in the Settings app." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="emf-N5-sEd">
-                                        <rect key="frame" x="57" y="258" width="260" height="151"/>
-                                        <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                        <nil key="highlightedColor"/>
-                                    </label>
-                                </subviews>
-                                <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <accessibility key="accessibilityConfiguration" label="PreviewDisplayView">
-                                    <bool key="isElement" value="YES"/>
-                                </accessibility>
-                            </view>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="48.799999999999997" y="20.239880059970016"/>
-        </scene>
-    </scenes>
-</document>
@@ -2,41 +2,15 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-  <key>NSCameraUsageDescription</key>
-  <string>This app uses the camera to demonstrate live video processing.</string>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>$(EXECUTABLE_NAME)</string>
-  <key>CFBundleIdentifier</key>
-  <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>$(PRODUCT_NAME)</string>
-  <key>CFBundlePackageType</key>
-  <string>APPL</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleVersion</key>
-  <string>1</string>
-  <key>LSRequiresIPhoneOS</key>
-  <true/>
-  <key>UILaunchStoryboardName</key>
-  <string>LaunchScreen</string>
-  <key>UIMainStoryboardFile</key>
-  <string>Main</string>
-  <key>UIRequiredDeviceCapabilities</key>
-  <array>
-    <string>armv7</string>
-  </array>
-  <key>UISupportedInterfaceOrientations</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
-  <key>UISupportedInterfaceOrientations~ipad</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
+  <key>CameraPosition</key>
+  <string>front</string>
+  <key>MainViewController</key>
+  <string>IrisTrackingViewController</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+  <key>GraphName</key>
+  <string>iris_tracking_gpu</string>
 </dict>
 </plist>
@@ -14,8 +14,8 @@

 #import <UIKit/UIKit.h>

-@interface AppDelegate : UIResponder <UIApplicationDelegate>
+#import "mediapipe/examples/ios/common/CommonViewController.h"

-@property(strong, nonatomic) UIWindow *window;
+@interface IrisTrackingViewController : CommonViewController

@end
@@ -0,0 +1,83 @@
+// Copyright 2019 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.
+
+#import "IrisTrackingViewController.h"
+
+#include "mediapipe/framework/formats/landmark.pb.h"
+
+static const char* kLandmarksOutputStream = "iris_landmarks";
+
+@implementation IrisTrackingViewController {
+  /// Input side packet for focal length parameter.
+  std::map<std::string, mediapipe::Packet> _input_side_packets;
+  mediapipe::Packet _focal_length_side_packet;
+}
+
+#pragma mark - UIViewController methods
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+
+  [self.mediapipeGraph addFrameOutputStream:kLandmarksOutputStream
+                           outputPacketType:MPPPacketTypeRaw];
+  _focal_length_side_packet =
+      mediapipe::MakePacket<std::unique_ptr<float>>(absl::make_unique<float>(0.0));
+  _input_side_packets = {
+      {"focal_length_pixel", _focal_length_side_packet},
+  };
+  [self.mediapipeGraph addSidePackets:_input_side_packets];
+}
+
+#pragma mark - MPPGraphDelegate methods
+
+// Receives a raw packet from the MediaPipe graph. Invoked on a MediaPipe worker thread.
+- (void)mediapipeGraph:(MPPGraph*)graph
+     didOutputPacket:(const ::mediapipe::Packet&)packet
+          fromStream:(const std::string&)streamName {
+  if (streamName == kLandmarksOutputStream) {
+    if (packet.IsEmpty()) {
+      NSLog(@"[TS:%lld] No iris landmarks", packet.Timestamp().Value());
+      return;
+    }
+    const auto& landmarks = packet.Get<::mediapipe::NormalizedLandmarkList>();
+    NSLog(@"[TS:%lld] Number of landmarks on iris: %d", packet.Timestamp().Value(),
+          landmarks.landmark_size());
+    for (int i = 0; i < landmarks.landmark_size(); ++i) {
+      NSLog(@"\tLandmark[%d]: (%f, %f, %f)", i, landmarks.landmark(i).x(),
+            landmarks.landmark(i).y(), landmarks.landmark(i).z());
+    }
+  }
+}
+
+#pragma mark - MPPInputSourceDelegate methods
+
+// Must be invoked on _videoQueue.
+- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
+                timestamp:(CMTime)timestamp
+               fromSource:(MPPInputSource*)source {
+  if (source != self.cameraSource) {
+    NSLog(@"Unknown source: %@", source);
+    return;
+  }
+
+  // TODO: This is a temporary solution. Need to verify whether the focal length is
+  // constant. In that case, we need to use input stream instead of using side packet.
+  *(_input_side_packets["focal_length_pixel"].Get<std::unique_ptr<float>>()) =
+      self.cameraSource.cameraIntrinsicMatrix.columns[0][0];
+  [self.mediapipeGraph sendPixelBuffer:imageBuffer
+                            intoStream:self.graphInputStream
+                            packetType:MPPPacketTypePixelBuffer];
+}
+
+@end
@@ -1,19 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface ViewController : UIViewController
-
-@end
@@ -1,216 +0,0 @@
-// Copyright 2019 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.
-
-#import "ViewController.h"
-
-#import "mediapipe/objc/MPPCameraInputSource.h"
-#import "mediapipe/objc/MPPGraph.h"
-#import "mediapipe/objc/MPPLayerRenderer.h"
-
-#include "mediapipe/framework/formats/landmark.pb.h"
-
-static NSString* const kGraphName = @"iris_tracking_gpu";
-
-static const char* kInputStream = "input_video";
-static const char* kOutputStream = "output_video";
-static const char* kLandmarksOutputStream = "iris_landmarks";
-static const char* kVideoQueueLabel = "com.google.mediapipe.example.videoQueue";
-
-@interface ViewController () <MPPGraphDelegate, MPPInputSourceDelegate>
-
-// The MediaPipe graph currently in use. Initialized in viewDidLoad, started in viewWillAppear: and
-// sent video frames on _videoQueue.
-@property(nonatomic) MPPGraph* mediapipeGraph;
-
-@end
-
-@implementation ViewController {
-  /// Handles camera access via AVCaptureSession library.
-  MPPCameraInputSource* _cameraSource;
-  /// Input side packet for focal length parameter.
-  std::map<std::string, mediapipe::Packet> _input_side_packets;
-  mediapipe::Packet _focal_length_side_packet;
-
-  /// Inform the user when camera is unavailable.
-  IBOutlet UILabel* _noCameraLabel;
-  /// Display the camera preview frames.
-  IBOutlet UIView* _liveView;
-  /// Render frames in a layer.
-  MPPLayerRenderer* _renderer;
-
-  /// Process camera frames on this queue.
-  dispatch_queue_t _videoQueue;
-}
-
-#pragma mark - Cleanup methods
-
- (void)dealloc {
-  self.mediapipeGraph.delegate = nil;
-  [self.mediapipeGraph cancel];
-  // Ignore errors since we're cleaning up.
-  [self.mediapipeGraph closeAllInputStreamsWithError:nil];
-  [self.mediapipeGraph waitUntilDoneWithError:nil];
-}
-
-#pragma mark - MediaPipe graph methods
-
-+ (MPPGraph*)loadGraphFromResource:(NSString*)resource {
-  // Load the graph config resource.
-  NSError* configLoadError = nil;
-  NSBundle* bundle = [NSBundle bundleForClass:[self class]];
-  if (!resource || resource.length == 0) {
-    return nil;
-  }
-  NSURL* graphURL = [bundle URLForResource:resource withExtension:@"binarypb"];
-  NSData* data = [NSData dataWithContentsOfURL:graphURL options:0 error:&configLoadError];
-  if (!data) {
-    NSLog(@"Failed to load MediaPipe graph config: %@", configLoadError);
-    return nil;
-  }
-
-  // Parse the graph config resource into mediapipe::CalculatorGraphConfig proto object.
-  mediapipe::CalculatorGraphConfig config;
-  config.ParseFromArray(data.bytes, data.length);
-
-  // Create MediaPipe graph with mediapipe::CalculatorGraphConfig proto object.
-  MPPGraph* newGraph = [[MPPGraph alloc] initWithGraphConfig:config];
-  [newGraph addFrameOutputStream:kOutputStream outputPacketType:MPPPacketTypePixelBuffer];
-  [newGraph addFrameOutputStream:kLandmarksOutputStream outputPacketType:MPPPacketTypeRaw];
-  return newGraph;
-}
-
-#pragma mark - UIViewController methods
-
- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  _renderer = [[MPPLayerRenderer alloc] init];
-  _renderer.layer.frame = _liveView.layer.bounds;
-  [_liveView.layer addSublayer:_renderer.layer];
-  _renderer.frameScaleMode = MPPFrameScaleModeFillAndCrop;
-
-  dispatch_queue_attr_t qosAttribute = dispatch_queue_attr_make_with_qos_class(
-      DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, /*relative_priority=*/0);
-  _videoQueue = dispatch_queue_create(kVideoQueueLabel, qosAttribute);
-
-  _cameraSource = [[MPPCameraInputSource alloc] init];
-  [_cameraSource setDelegate:self queue:_videoQueue];
-  _cameraSource.sessionPreset = AVCaptureSessionPresetHigh;
-  _cameraSource.cameraPosition = AVCaptureDevicePositionFront;
-  // The frame's native format is rotated with respect to the portrait orientation.
-  _cameraSource.orientation = AVCaptureVideoOrientationPortrait;
-  // When using the front camera, mirror the input for a more natural look.
-  _cameraSource.videoMirrored = YES;
-
-  self.mediapipeGraph = [[self class] loadGraphFromResource:kGraphName];
-  self.mediapipeGraph.delegate = self;
-  // Set maxFramesInFlight to a small value to avoid memory contention for real-time processing.
-  self.mediapipeGraph.maxFramesInFlight = 2;
-
-  _focal_length_side_packet =
-      mediapipe::MakePacket<std::unique_ptr<float>>(absl::make_unique<float>(0.0));
-  _input_side_packets = {
-      {"focal_length_pixel", _focal_length_side_packet},
-  };
-  [self.mediapipeGraph addSidePackets:_input_side_packets];
-}
-
-// In this application, there is only one ViewController which has no navigation to other view
-// controllers, and there is only one View with live display showing the result of running the
-// MediaPipe graph on the live video feed. If more view controllers are needed later, the graph
-// setup/teardown and camera start/stop logic should be updated appropriately in response to the
-// appearance/disappearance of this ViewController, as viewWillAppear: can be invoked multiple times
-// depending on the application navigation flow in that case.
- (void)viewWillAppear:(BOOL)animated {
-  [super viewWillAppear:animated];
-
-  [_cameraSource requestCameraAccessWithCompletionHandler:^void(BOOL granted) {
-    if (granted) {
-      [self startGraphAndCamera];
-      dispatch_async(dispatch_get_main_queue(), ^{
-        _noCameraLabel.hidden = YES;
-      });
-    }
-  }];
-}
-
- (void)startGraphAndCamera {
-  // Start running self.mediapipeGraph.
-  NSError* error;
-  if (![self.mediapipeGraph startWithError:&error]) {
-    NSLog(@"Failed to start graph: %@", error);
-  }
-
-  // Start fetching frames from the camera.
-  dispatch_async(_videoQueue, ^{
-    [_cameraSource start];
-  });
-}
-
-#pragma mark - MPPGraphDelegate methods
-
-// Receives CVPixelBufferRef from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-    didOutputPixelBuffer:(CVPixelBufferRef)pixelBuffer
-              fromStream:(const std::string&)streamName {
-  if (streamName == kOutputStream) {
-    // Display the captured image on the screen.
-    CVPixelBufferRetain(pixelBuffer);
-    dispatch_async(dispatch_get_main_queue(), ^{
-      [_renderer renderPixelBuffer:pixelBuffer];
-      CVPixelBufferRelease(pixelBuffer);
-    });
-  }
-}
-
-// Receives a raw packet from the MediaPipe graph. Invoked on a MediaPipe worker thread.
- (void)mediapipeGraph:(MPPGraph*)graph
-     didOutputPacket:(const ::mediapipe::Packet&)packet
-          fromStream:(const std::string&)streamName {
-  if (streamName == kLandmarksOutputStream) {
-    if (packet.IsEmpty()) {
-      NSLog(@"[TS:%lld] No iris landmarks", packet.Timestamp().Value());
-      return;
-    }
-    const auto& landmarks = packet.Get<::mediapipe::NormalizedLandmarkList>();
-    NSLog(@"[TS:%lld] Number of landmarks on iris: %d", packet.Timestamp().Value(),
-          landmarks.landmark_size());
-    for (int i = 0; i < landmarks.landmark_size(); ++i) {
-      NSLog(@"\tLandmark[%d]: (%f, %f, %f)", i, landmarks.landmark(i).x(),
-            landmarks.landmark(i).y(), landmarks.landmark(i).z());
-    }
-  }
-}
-
-#pragma mark - MPPInputSourceDelegate methods
-
-// Must be invoked on _videoQueue.
- (void)processVideoFrame:(CVPixelBufferRef)imageBuffer
-                timestamp:(CMTime)timestamp
-               fromSource:(MPPInputSource*)source {
-  if (source != _cameraSource) {
-    NSLog(@"Unknown source: %@", source);
-    return;
-  }
-
-  // TODO: This is a temporary solution. Need to verify whether the focal length is
-  // constant. In that case, we need to use input stream instead of using side packet.
-  *(_input_side_packets["focal_length_pixel"].Get<std::unique_ptr<float>>()) =
-      _cameraSource.cameraIntrinsicMatrix.columns[0][0];
-  [self.mediapipeGraph sendPixelBuffer:imageBuffer
-                            intoStream:kInputStream
-                            packetType:MPPPacketTypePixelBuffer];
-}
-
-@end
@@ -1,22 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-  @autoreleasepool {
-      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}
@@ -1,21 +0,0 @@
-// Copyright 2019 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.
-
-#import <UIKit/UIKit.h>
-
-@interface AppDelegate : UIResponder <UIApplicationDelegate>
-
-@property(strong, nonatomic) UIWindow *window;
-
-@end
@@ -1,59 +0,0 @@
-// Copyright 2019 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.
-
-#import "AppDelegate.h"
-
-@interface AppDelegate ()
-
-@end
-
-@implementation AppDelegate
-
- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
-  return YES;
-}
-
- (void)applicationWillResignActive:(UIApplication *)application {
-  // Sent when the application is about to move from active to inactive state. This can occur for
-  // certain types of temporary interruptions (such as an incoming phone call or SMS message) or
-  // when the user quits the application and it begins the transition to the background state. Use
-  // this method to pause ongoing tasks, disable timers, and invalidate graphics rendering
-  // callbacks. Games should use this method to pause the game.
-}
-
- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store
-  // enough application state information to restore your application to its current state in case
-  // it is terminated later. If your application supports background execution, this method is
-  // called instead of applicationWillTerminate: when the user quits.
-}
-
- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo
-  // many of the changes made on entering the background.
-}
-
- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If
-  // the application was previously in the background, optionally refresh the user interface.
-}
-
- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also
-  // applicationDidEnterBackground:.
-}
-
-@end
@@ -1,99 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -1,7 +0,0 @@
-{
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
-
@@ -33,12 +33,16 @@ alias(

 ios_application(
    name = "MultiHandTrackingGpuApp",
+    app_icons = ["//mediapipe/examples/ios/common:AppIcon"],
    bundle_id = BUNDLE_ID_PREFIX + ".MultiHandTrackingGpu",
    families = [
        "iphone",
        "ipad",
    ],
-    infoplists = ["Info.plist"],
+    infoplists = [
+        "//mediapipe/examples/ios/common:Info.plist",
+        "Info.plist",
+    ],
    minimum_os_version = MIN_IOS_VERSION,
    provisioning_profile = example_provisioning(),
    deps = [
@@ -50,33 +54,20 @@ ios_application(
 objc_library(
    name = "MultiHandTrackingGpuAppLibrary",
    srcs = [
-        "AppDelegate.m",
-        "ViewController.mm",
-        "main.m",
+        "MultiHandTrackingViewController.mm",
    ],
    hdrs = [
-        "AppDelegate.h",
-        "ViewController.h",
+        "MultiHandTrackingViewController.h",
    ],
    data = [
-        "Base.lproj/LaunchScreen.storyboard",
-        "Base.lproj/Main.storyboard",
        "//mediapipe/graphs/hand_tracking:multi_hand_tracking_mobile_gpu_binary_graph",
        "//mediapipe/models:hand_landmark.tflite",
        "//mediapipe/models:handedness.txt",
        "//mediapipe/models:palm_detection.tflite",
        "//mediapipe/models:palm_detection_labelmap.txt",
    ],
-    sdk_frameworks = [
-        "AVFoundation",
-        "CoreGraphics",
-        "CoreMedia",
-        "UIKit",
-    ],
    deps = [
-        "//mediapipe/objc:mediapipe_framework_ios",
-        "//mediapipe/objc:mediapipe_input_sources_ios",
-        "//mediapipe/objc:mediapipe_layer_renderer",
+        "//mediapipe/examples/ios/common:CommonMediaPipeAppLibrary",
    ] + select({
        "//mediapipe:ios_i386": [],
        "//mediapipe:ios_x86_64": [],
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-</document>
@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="EfB-xq-knP">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                <subviews>
-                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Camera access needed for this demo. Please enable camera access in the Settings app." textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="emf-N5-sEd">
-                                        <rect key="frame" x="57" y="258" width="260" height="151"/>
-                                        <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                                        <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                        <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                        <nil key="highlightedColor"/>
-                                    </label>
-                                </subviews>
-                                <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <accessibility key="accessibilityConfiguration" label="PreviewDisplayView">
-                                    <bool key="isElement" value="YES"/>
-                                </accessibility>
-                            </view>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                    <connections>
-                        <outlet property="_liveView" destination="EfB-xq-knP" id="JQp-2n-q9q"/>
-                        <outlet property="_noCameraLabel" destination="emf-N5-sEd" id="91G-3Z-cU3"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="48.799999999999997" y="20.239880059970016"/>
-        </scene>
-    </scenes>
-</document>
@@ -2,41 +2,15 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-  <key>NSCameraUsageDescription</key>
-  <string>This app uses the camera to demonstrate live video processing.</string>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>en</string>
-  <key>CFBundleExecutable</key>
-  <string>$(EXECUTABLE_NAME)</string>
-  <key>CFBundleIdentifier</key>
-  <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>$(PRODUCT_NAME)</string>
-  <key>CFBundlePackageType</key>
-  <string>APPL</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleVersion</key>
-  <string>1</string>
-  <key>LSRequiresIPhoneOS</key>
-  <true/>
-  <key>UILaunchStoryboardName</key>
-  <string>LaunchScreen</string>
-  <key>UIMainStoryboardFile</key>
-  <string>Main</string>
-  <key>UIRequiredDeviceCapabilities</key>
-  <array>
-    <string>armv7</string>
-  </array>
-  <key>UISupportedInterfaceOrientations</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
-  <key>UISupportedInterfaceOrientations~ipad</key>
-  <array>
-    <string>UIInterfaceOrientationPortrait</string>
-  </array>
+  <key>CameraPosition</key>
+  <string>front</string>
+  <key>MainViewController</key>
+  <string>MultiHandTrackingViewController</string>
+  <key>GraphOutputStream</key>
+  <string>output_video</string>
+  <key>GraphInputStream</key>
+  <string>input_video</string>
+  <key>GraphName</key>
+  <string>multi_hand_tracking_mobile_gpu</string>
 </dict>
 </plist>
--- a/Show More
+++ b/Show More