Merge "[service_based_sample] support basic extender implementation."

29 files changed, 1568 insertions, 754 deletions

diff --git a/camera2/extensions/service_based_sample/README.txt b/camera2/extensions/service_based_sample/README.txt
new file mode 100644
index 00000000..a212a39a
--- /dev/null
+++ b/camera2/extensions/service_based_sample/README.txt
@@ -0,0 +1,26 @@
+Service-Based reference implementation
+This reference implementation demonstrates how to implement the Extensions in a standalone service.
+
+It contains the following components:
+1) oem_library:
+   A Camera Extensions OEM library that implements the Extensions-Interface to enable both Camera2
+   and CameraX Extensions APIS. It is basically a pass-through that forwards all calls from
+   Extensions-Interface to the service. If it works well for you, you don't have to modify it.
+
+   It also contains the AIDL and wrapper classes for communicating with the service. AIDL and
+   wrapper classes are located in androidx.camera.extensions.impl.service package.
+
+   Both Advanced Extender and Basic Extender is supported, however, Advanced Extender is enabled
+   by default. If you want to use Basic Extender to implement, change
+   ExtensionsVersionImpl#isAdvancedExtenderImplemented to return false.
+
+2) extensions_service:
+   A sample implementation of extensions service is provided. You should add your real implementation
+   here. The sample service is built using Android.bp, but you can transform it into a gradle
+   project by adding the stub jar of oem_library (located in
+   out/target/common/obj/JAVA_LIBRARIES/service_based_camera_extensions_intermediates/) to the
+   dependencies.
+
+In this service-based architecture, all functionalities of the Extensions-Interface are supposed to
+be implemented in extensions_service except for ExtensionVersionImpl#checkApiVersion and
+#isAdvancedExtenderImplemented which require you to implement it in the oem_library.
\ No newline at end of file
diff --git a/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/ExtensionsService.java b/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/ExtensionsService.java
index c3d62351..3a279716 100644
--- a/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/ExtensionsService.java
+++ b/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/ExtensionsService.java
@@ -23,10 +23,13 @@ import android.os.RemoteException;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
+import androidx.camera.extensions.impl.PreviewExtenderImpl;
 import androidx.camera.extensions.impl.service.IAdvancedExtenderImpl;
 import androidx.camera.extensions.impl.service.IExtensionsService;
 import androidx.camera.extensions.impl.service.IOnExtensionsDeinitializedCallback;
 import androidx.camera.extensions.impl.service.IOnExtensionsInitializedCallback;
+import androidx.camera.extensions.impl.service.IImageCaptureExtenderImpl;
+import androidx.camera.extensions.impl.service.IPreviewExtenderImpl;
 
 public class ExtensionsService extends Service {
     private static final String TAG = "ExtensionsService";
@@ -66,5 +69,15 @@ public class ExtensionsService extends Service {
             Log.d(TAG, "initializeAdvancedExtension");
             return new AdvancedExtenderImplStub(ExtensionsService.this, extensionType);
         }
+
+        @Override
+        public IPreviewExtenderImpl initializePreviewExtension(int extensionType) {
+            return new PreviewExtenderImplStub(ExtensionsService.this, extensionType);
+        }
+
+        @Override
+        public IImageCaptureExtenderImpl initializeImageCaptureExtension(int extensionType) {
+            return new ImageCaptureExtenderImplStub(ExtensionsService.this, extensionType);
+        }
     }
-}
\ No newline at end of file
+}
diff --git a/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/ImageCaptureExtenderImplStub.java b/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/ImageCaptureExtenderImplStub.java
new file mode 100644
index 00000000..75cd99c9
--- /dev/null
+++ b/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/ImageCaptureExtenderImplStub.java
@@ -0,0 +1,228 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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.android.oemextensions;
+
+import android.content.Context;
+import android.hardware.camera2.CameraAccessException;
+import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraManager;
+import android.hardware.camera2.CaptureRequest;
+import android.hardware.camera2.CaptureResult;
+import android.hardware.camera2.TotalCaptureResult;
+import android.media.Image;
+import android.media.ImageWriter;
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.Surface;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+import androidx.camera.extensions.impl.service.CaptureBundle;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+import androidx.camera.extensions.impl.service.ICaptureProcessorImpl;
+import androidx.camera.extensions.impl.service.IImageCaptureExtenderImpl;
+import androidx.camera.extensions.impl.service.IProcessResultImpl;
+import androidx.camera.extensions.impl.service.LatencyRange;
+import androidx.camera.extensions.impl.service.Size;
+import androidx.camera.extensions.impl.service.SizeList;
+
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.List;
+
+public class ImageCaptureExtenderImplStub extends IImageCaptureExtenderImpl.Stub {
+    private static final String TAG = "ImageCaptureExtenderImplStub";
+
+    private static final int DEFAULT_STAGE_ID = 0;
+    private static final int SESSION_STAGE_ID = 101;
+    private static final int MODE = CaptureRequest.CONTROL_AWB_MODE_SHADE;
+
+    private final Context mContext;
+    private final List<CaptureResult.Key> mResultKeyList = Arrays.asList(
+            CaptureResult.CONTROL_AE_MODE,
+            CaptureResult.CONTROL_AE_PRECAPTURE_TRIGGER,
+            CaptureResult.CONTROL_AE_LOCK,
+            CaptureResult.CONTROL_AE_STATE,
+            CaptureResult.FLASH_MODE,
+            CaptureResult.FLASH_STATE,
+            CaptureResult.JPEG_QUALITY,
+            CaptureResult.JPEG_ORIENTATION
+    );
+
+    private CameraCharacteristics mCameraCharacteristics;
+    ICaptureProcessorImpl mCaptureProcessor =
+            new ICaptureProcessorImpl.Stub() {
+                private ImageWriter mImageWriter;
+
+                @Override
+                public void onOutputSurface(Surface surface, int imageFormat) {
+                    mImageWriter = ImageWriter.newInstance(surface, 1);
+                }
+
+                @Override
+                public void process(List<CaptureBundle> captureList,
+                        IProcessResultImpl resultCallback) {
+                    CaptureBundle captureBundle = captureList.get(0);
+                    TotalCaptureResult captureResult =
+                            captureBundle.captureResult.toTotalCaptureResult();
+
+                    if (resultCallback != null) {
+                        CameraMetadataWrapper cameraMetadataWrapper =
+                                new CameraMetadataWrapper(mCameraCharacteristics);
+                        Long shutterTimestamp = captureResult.get(CaptureResult.SENSOR_TIMESTAMP);
+                        if (shutterTimestamp != null) {
+                            for (CaptureResult.Key key : mResultKeyList) {
+                                if (captureResult.get(key) != null) {
+                                    cameraMetadataWrapper.set(key, captureResult.get(key));
+                                }
+                            }
+                            try {
+                                resultCallback.onCaptureCompleted(shutterTimestamp,
+                                        cameraMetadataWrapper);
+                            } catch (RemoteException e) {
+
+                            }
+                        }
+                    }
+                    Image image = mImageWriter.dequeueInputImage();
+
+                    // Do processing here
+                    ByteBuffer yByteBuffer = image.getPlanes()[0].getBuffer();
+                    ByteBuffer uByteBuffer = image.getPlanes()[2].getBuffer();
+                    ByteBuffer vByteBuffer = image.getPlanes()[1].getBuffer();
+
+                    Image captureImage = captureBundle.captureImage.get();
+
+                    // Sample here just simply copy/paste the capture image result
+                    yByteBuffer.put(captureImage.getPlanes()[0].getBuffer());
+                    uByteBuffer.put(captureImage.getPlanes()[2].getBuffer());
+                    vByteBuffer.put(captureImage.getPlanes()[1].getBuffer());
+                    Long sensorTimestamp =
+                            captureResult.get(CaptureResult.SENSOR_TIMESTAMP);
+                    if (sensorTimestamp != null) {
+                        image.setTimestamp(sensorTimestamp);
+                    } else {
+                        Log.e(TAG, "Sensor timestamp absent using default!");
+                    }
+
+                    mImageWriter.queueInputImage(image);
+
+                    for (CaptureBundle bundle : captureList) {
+                        bundle.captureImage.decrement();
+                    }
+                }
+
+                @Override
+                public void onResolutionUpdate(androidx.camera.extensions.impl.service.Size size) {
+
+                }
+
+                @Override
+                public void onImageFormatUpdate(int imageFormat) {
+
+                }
+            };
+
+    public ImageCaptureExtenderImplStub(@NonNull Context context, int extensionType) {
+        mContext = context;
+
+    }
+
+    @Override
+    public void onInit(String cameraId) {
+
+    }
+
+    @Override
+    public void onDeInit() {
+
+    }
+
+    @Override
+    @Nullable
+    public CaptureStageImplWrapper onPresetSession() {
+        return null;
+    }
+
+    @Override
+    @Nullable
+    public CaptureStageImplWrapper onEnableSession() {
+        return null;
+    }
+
+    @Override
+    @Nullable
+    public CaptureStageImplWrapper onDisableSession() {
+        return null;
+    }
+
+    @Override
+    public boolean isExtensionAvailable(String cameraId) {
+        return true;
+    }
+
+    @Override
+    public void init(String cameraId) {
+        try {
+            CameraManager cameraManager = mContext.getSystemService(CameraManager.class);
+            mCameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId);
+        } catch (CameraAccessException e) {
+            Log.e(TAG, "Cannot get CameraCharacteristics", e);
+        }
+
+    }
+
+    @Override
+    public ICaptureProcessorImpl getCaptureProcessor() {
+        return mCaptureProcessor;
+    }
+
+    @Override
+    public List<CaptureStageImplWrapper> getCaptureStages() {
+        CaptureStageImplWrapper captureStage = new CaptureStageImplWrapper();
+        captureStage.id = DEFAULT_STAGE_ID;
+        captureStage.parameters = new CameraMetadataWrapper(mCameraCharacteristics);
+        return Arrays.asList(captureStage);
+    }
+
+    @Override
+    public int getMaxCaptureStage() {
+        return 1;
+    }
+
+    @Override
+    public List<SizeList> getSupportedResolutions() {
+        return null;
+    }
+
+    @Override
+    @Nullable
+    public LatencyRange getEstimatedCaptureLatencyRange(Size outputSize) {
+        return null;
+    }
+
+    @Override
+    public CameraMetadataWrapper getAvailableCaptureRequestKeys() {
+        return null;
+    }
+
+    @Override
+    public CameraMetadataWrapper getAvailableCaptureResultKeys() {
+        return null;
+    }
+}
diff --git a/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/PreviewExtenderImplStub.java b/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/PreviewExtenderImplStub.java
new file mode 100644
index 00000000..c9add1c7
--- /dev/null
+++ b/camera2/extensions/service_based_sample/extensions_service/src/com/android/oemextensions/PreviewExtenderImplStub.java
@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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.android.oemextensions;
+
+import android.content.Context;
+import android.hardware.camera2.CameraAccessException;
+import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
+import android.hardware.camera2.CameraManager;
+import android.hardware.camera2.CaptureRequest;
+import android.media.ImageWriter;
+import android.util.Log;
+import android.util.Size;
+import android.view.Surface;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+import androidx.camera.extensions.impl.service.IPreviewExtenderImpl;
+import androidx.camera.extensions.impl.service.IPreviewImageProcessorImpl;
+import androidx.camera.extensions.impl.service.IProcessResultImpl;
+import androidx.camera.extensions.impl.service.IRequestUpdateProcessorImpl;
+import androidx.camera.extensions.impl.service.ImageWrapper;
+import androidx.camera.extensions.impl.service.SizeList;
+import androidx.camera.extensions.impl.service.TotalCaptureResultWrapper;
+
+import java.util.List;
+
+public class PreviewExtenderImplStub extends IPreviewExtenderImpl.Stub {
+    private static final String TAG = "PreviewExtenderImplStub";
+
+    private static final int DEFAULT_STAGE_ID = 0;
+    private static final int SESSION_STAGE_ID = 101;
+    private static final int MODE = CaptureRequest.CONTROL_AWB_MODE_SHADE;
+    private final int mProcessorType;
+    private final Context mContext;
+    private CaptureStageImplWrapper mCaptureStage;
+    private CameraCharacteristics mCameraCharacteristics;
+    private final SimplePreviewImageProcessor mPreviewImageProcessor;
+    private final SimpleRequestUpdateProcessor mRequestUpdateProcessor;
+
+    public PreviewExtenderImplStub(@NonNull Context context, int extensionType) {
+        mContext = context;
+        switch (extensionType) {
+            case CameraExtensionCharacteristics.EXTENSION_AUTOMATIC:
+            case CameraExtensionCharacteristics.EXTENSION_BOKEH:
+                mRequestUpdateProcessor = new SimpleRequestUpdateProcessor();
+                mPreviewImageProcessor = null;
+                mProcessorType = IPreviewExtenderImpl.PROCESSOR_TYPE_REQUEST_UPDATE_ONLY;
+                break;
+            case CameraExtensionCharacteristics.EXTENSION_HDR:
+            case CameraExtensionCharacteristics.EXTENSION_NIGHT:
+                mRequestUpdateProcessor = null;
+                mPreviewImageProcessor = new SimplePreviewImageProcessor();
+                mProcessorType = IPreviewExtenderImpl.PROCESSOR_TYPE_IMAGE_PROCESSOR;
+                break;
+            case CameraExtensionCharacteristics.EXTENSION_FACE_RETOUCH:
+            default:
+                mRequestUpdateProcessor = null;
+                mPreviewImageProcessor = null;
+                mProcessorType = IPreviewExtenderImpl.PROCESSOR_TYPE_NONE;
+                break;
+        }
+    }
+
+    private class SimpleRequestUpdateProcessor extends IRequestUpdateProcessorImpl.Stub {
+        private int mFrameCount = 0;
+        private Integer mWBMode = CaptureRequest.CONTROL_AWB_MODE_AUTO;
+
+        @Override
+        public CaptureStageImplWrapper process(TotalCaptureResultWrapper result) {
+            mFrameCount++;
+            if (mFrameCount % 90 == 0) {
+                mCaptureStage = new CaptureStageImplWrapper();
+                mCaptureStage.id = DEFAULT_STAGE_ID;
+                switch (mWBMode) {
+                    case CaptureRequest.CONTROL_AWB_MODE_AUTO:
+                        mWBMode = MODE;
+                        break;
+                        case MODE:
+                            mWBMode = CaptureRequest.CONTROL_AWB_MODE_AUTO;
+                            break; default:
+                }
+                mCaptureStage.parameters = new CameraMetadataWrapper(
+                        mCameraCharacteristics);
+                mCaptureStage.parameters.set(CaptureRequest.CONTROL_AWB_MODE,
+                        mWBMode);
+                mFrameCount = 0;
+
+                return mCaptureStage;
+            }
+            return null;
+        }
+    };
+    private static class SimplePreviewImageProcessor extends IPreviewImageProcessorImpl.Stub {
+        private ImageWriter mWriter;
+
+        public void close() {
+            if (mWriter != null) {
+                mWriter.close();
+            }
+        }
+        @Override
+        public void onOutputSurface(Surface surface, int imageFormat) {
+            mWriter = ImageWriter.newInstance(surface, imageFormat);
+        }
+
+        @Override
+        public void onResolutionUpdate(
+                androidx.camera.extensions.impl.service.Size size) {
+        }
+
+        @Override
+        public void onImageFormatUpdate(int imageFormat) {
+        }
+
+        @Override
+        public void process(ImageWrapper image, TotalCaptureResultWrapper result,
+                IProcessResultImpl resultCallback) {
+            mWriter.queueInputImage(image.get());
+            image.decrement();
+        }
+    }
+
+    @Override
+    public void onInit(String cameraId) {
+
+    }
+
+    @Override
+    public void onDeInit() {
+        if (mPreviewImageProcessor != null) {
+            mPreviewImageProcessor.close();
+        }
+    }
+
+    @Override
+    @Nullable
+    public CaptureStageImplWrapper onPresetSession() {
+        CaptureStageImplWrapper captureStage = new CaptureStageImplWrapper();
+        captureStage.id = SESSION_STAGE_ID;
+        captureStage.parameters = new CameraMetadataWrapper(mCameraCharacteristics);
+        captureStage.parameters.set(CaptureRequest.CONTROL_AWB_MODE, MODE);
+        return captureStage;
+    }
+
+    @Override
+    @Nullable
+    public CaptureStageImplWrapper onEnableSession() {
+        CaptureStageImplWrapper captureStage = new CaptureStageImplWrapper();
+        captureStage.id = SESSION_STAGE_ID;
+        captureStage.parameters = new CameraMetadataWrapper(mCameraCharacteristics);
+        captureStage.parameters.set(CaptureRequest.CONTROL_AWB_MODE, MODE);
+        return captureStage;
+    }
+
+    @Override
+    @Nullable
+    public CaptureStageImplWrapper onDisableSession() {
+        CaptureStageImplWrapper captureStage = new CaptureStageImplWrapper();
+        captureStage.id = SESSION_STAGE_ID;
+        captureStage.parameters = new CameraMetadataWrapper(mCameraCharacteristics);
+        captureStage.parameters.set(CaptureRequest.CONTROL_AWB_MODE, MODE);
+        return captureStage;
+    }
+
+    @Override
+    public boolean isExtensionAvailable(String cameraId) {
+        return true;
+    }
+
+    @Override
+    public void init(String cameraId) {
+        try {
+            CameraManager cameraManager = mContext.getSystemService(CameraManager.class);
+            mCameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId);
+        } catch (CameraAccessException e) {
+            Log.e(TAG, "Cannot get CameraCharacteristics", e);
+        }
+
+        mCaptureStage = new CaptureStageImplWrapper();
+        mCaptureStage.id = DEFAULT_STAGE_ID;
+        mCaptureStage.parameters = new CameraMetadataWrapper(mCameraCharacteristics);
+        mCaptureStage.parameters.set(CaptureRequest.CONTROL_AWB_MODE,
+                CaptureRequest.CONTROL_AWB_MODE_AUTO);
+    }
+
+    @Override
+    public CaptureStageImplWrapper getCaptureStage() {
+        return mCaptureStage;
+    }
+
+    @Override
+    public int getProcessorType() {
+        return mProcessorType;
+    }
+
+    @Override
+    @Nullable
+    public IPreviewImageProcessorImpl getPreviewImageProcessor() {
+        return mPreviewImageProcessor;
+    }
+
+    @Override
+    @Nullable
+    public IRequestUpdateProcessorImpl getRequestUpdateProcessor() {
+        return mRequestUpdateProcessor;
+    }
+
+    @Override
+    @Nullable
+    public List<SizeList> getSupportedResolutions() {
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoImageCaptureExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoImageCaptureExtenderImpl.java
index 514ca3b5..55486a3c 100755
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoImageCaptureExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoImageCaptureExtenderImpl.java
@@ -17,6 +17,7 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.hardware.camera2.CaptureRequest;
 import android.hardware.camera2.CaptureResult;
 import android.util.Pair;
@@ -25,6 +26,7 @@ import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardImageCaptureExtender;
 
 import java.util.List;
 
@@ -35,90 +37,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class AutoImageCaptureExtenderImpl implements ImageCaptureExtenderImpl {
-    public AutoImageCaptureExtenderImpl() {}
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureProcessorImpl getCaptureProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<CaptureStageImpl> getCaptureStages() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public int getMaxCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
+public final class AutoImageCaptureExtenderImpl extends ForwardImageCaptureExtender {
+    public AutoImageCaptureExtenderImpl() {
+        super(CameraExtensionCharacteristics.EXTENSION_AUTOMATIC);
     }
-
-    @Nullable
-    @Override
-    public Range<Long> getEstimatedCaptureLatencyRange(@Nullable Size captureOutputSize) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureRequest.Key> getAvailableCaptureRequestKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureResult.Key> getAvailableCaptureResultKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoPreviewExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoPreviewExtenderImpl.java
index 85b63df7..94b8808a 100755
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoPreviewExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/AutoPreviewExtenderImpl.java
@@ -18,11 +18,13 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.util.Pair;
 import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardPreviewExtender;
 
 import java.util.List;
 
@@ -33,73 +35,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class AutoPreviewExtenderImpl implements PreviewExtenderImpl {
+public final class AutoPreviewExtenderImpl extends ForwardPreviewExtender {
     public AutoPreviewExtenderImpl() {
-    }
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public CaptureStageImpl getCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public ProcessorType getProcessorType() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public ProcessorImpl getProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
+        super(CameraExtensionCharacteristics.EXTENSION_AUTOMATIC);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyImageCaptureExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyImageCaptureExtenderImpl.java
index c547f772..ce9e9ea1 100755
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyImageCaptureExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyImageCaptureExtenderImpl.java
@@ -17,6 +17,7 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.hardware.camera2.CaptureRequest;
 import android.hardware.camera2.CaptureResult;
 import android.util.Pair;
@@ -25,6 +26,7 @@ import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardImageCaptureExtender;
 
 import java.util.List;
 
@@ -35,89 +37,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class BeautyImageCaptureExtenderImpl implements ImageCaptureExtenderImpl {
-    public BeautyImageCaptureExtenderImpl() {}
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureProcessorImpl getCaptureProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<CaptureStageImpl> getCaptureStages() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public int getMaxCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public Range<Long> getEstimatedCaptureLatencyRange(@Nullable Size captureOutputSize) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureRequest.Key> getAvailableCaptureRequestKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureResult.Key> getAvailableCaptureResultKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
+public final class BeautyImageCaptureExtenderImpl extends ForwardImageCaptureExtender {
+    public BeautyImageCaptureExtenderImpl() {
+        super(CameraExtensionCharacteristics.EXTENSION_FACE_RETOUCH);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyPreviewExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyPreviewExtenderImpl.java
index da5748cc..0a452c33 100755
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyPreviewExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BeautyPreviewExtenderImpl.java
@@ -18,11 +18,13 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.util.Pair;
 import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardPreviewExtender;
 
 import java.util.List;
 
@@ -33,73 +35,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class BeautyPreviewExtenderImpl implements PreviewExtenderImpl {
+public final class BeautyPreviewExtenderImpl extends ForwardPreviewExtender {
     public BeautyPreviewExtenderImpl() {
-    }
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public CaptureStageImpl getCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public ProcessorType getProcessorType() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public ProcessorImpl getProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
+        super(CameraExtensionCharacteristics.EXTENSION_FACE_RETOUCH);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehImageCaptureExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehImageCaptureExtenderImpl.java
index 6901e5f3..f24e9f1d 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehImageCaptureExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehImageCaptureExtenderImpl.java
@@ -17,6 +17,7 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.hardware.camera2.CaptureRequest;
 import android.hardware.camera2.CaptureResult;
 import android.util.Pair;
@@ -25,6 +26,7 @@ import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardImageCaptureExtender;
 
 import java.util.List;
 
@@ -35,87 +37,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class BokehImageCaptureExtenderImpl implements ImageCaptureExtenderImpl {
-    public BokehImageCaptureExtenderImpl() {}
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        return true;
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-    }
-
-    @Nullable
-    @Override
-    public CaptureProcessorImpl getCaptureProcessor() {
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public List<CaptureStageImpl> getCaptureStages() {
-        return null;
-    }
-
-    @Override
-    public int getMaxCaptureStage() {
-        return 2;
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-    }
-
-    @Override
-    public void onDeInit() {
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        return null;
+public final class BokehImageCaptureExtenderImpl extends ForwardImageCaptureExtender {
+    public BokehImageCaptureExtenderImpl() {
+        super(CameraExtensionCharacteristics.EXTENSION_BOKEH);
     }
-
-    @Nullable
-    @Override
-    public Range<Long> getEstimatedCaptureLatencyRange(@Nullable Size captureOutputSize) {
-        return null;
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureRequest.Key> getAvailableCaptureRequestKeys() {
-        return null;
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureResult.Key> getAvailableCaptureResultKeys() {
-        return null;
-    }
-
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehPreviewExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehPreviewExtenderImpl.java
index 55902f04..e17d9415 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehPreviewExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/BokehPreviewExtenderImpl.java
@@ -17,11 +17,13 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.util.Pair;
 import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardPreviewExtender;
 
 import java.util.List;
 
@@ -32,69 +34,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class BokehPreviewExtenderImpl implements PreviewExtenderImpl {
-    public BokehPreviewExtenderImpl() {}
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        return true;
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-    }
-
-    @NonNull
-    @Override
-    public CaptureStageImpl getCaptureStage() {
-        return null;
-    }
-
-    @NonNull
-    @Override
-    public ProcessorType getProcessorType() {
-        return ProcessorType.PROCESSOR_TYPE_NONE;
-    }
-
-    @Nullable
-    @Override
-    public ProcessorImpl getProcessor() {
-        return null;
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-    }
-
-    @Override
-    public void onDeInit() {
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        return null;
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        return null;
+public final class BokehPreviewExtenderImpl extends ForwardPreviewExtender {
+    public BokehPreviewExtenderImpl() {
+        super(CameraExtensionCharacteristics.EXTENSION_BOKEH);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrImageCaptureExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrImageCaptureExtenderImpl.java
index 507f2143..264a714e 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrImageCaptureExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrImageCaptureExtenderImpl.java
@@ -17,6 +17,7 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.hardware.camera2.CaptureRequest;
 import android.hardware.camera2.CaptureResult;
 import android.util.Pair;
@@ -25,6 +26,7 @@ import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardImageCaptureExtender;
 
 import java.util.List;
 
@@ -35,89 +37,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class HdrImageCaptureExtenderImpl implements ImageCaptureExtenderImpl {
-    public HdrImageCaptureExtenderImpl() {}
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureProcessorImpl getCaptureProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<CaptureStageImpl> getCaptureStages() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public int getMaxCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public Range<Long> getEstimatedCaptureLatencyRange(@Nullable Size captureOutputSize) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureRequest.Key> getAvailableCaptureRequestKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureResult.Key> getAvailableCaptureResultKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
+public final class HdrImageCaptureExtenderImpl extends ForwardImageCaptureExtender {
+    public HdrImageCaptureExtenderImpl() {
+        super(CameraExtensionCharacteristics.EXTENSION_HDR);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrPreviewExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrPreviewExtenderImpl.java
index 83f1a348..8e7bbd85 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrPreviewExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/HdrPreviewExtenderImpl.java
@@ -18,11 +18,13 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.util.Pair;
 import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardPreviewExtender;
 
 import java.util.List;
 
@@ -33,73 +35,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class HdrPreviewExtenderImpl implements PreviewExtenderImpl {
+public final class HdrPreviewExtenderImpl extends ForwardPreviewExtender {
     public HdrPreviewExtenderImpl() {
-    }
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public CaptureStageImpl getCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public ProcessorType getProcessorType() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public ProcessorImpl getProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
+        super(CameraExtensionCharacteristics.EXTENSION_HDR);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightImageCaptureExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightImageCaptureExtenderImpl.java
index 05a195e1..36c554fb 100755
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightImageCaptureExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightImageCaptureExtenderImpl.java
@@ -17,6 +17,7 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.hardware.camera2.CaptureRequest;
 import android.hardware.camera2.CaptureResult;
 import android.util.Pair;
@@ -25,6 +26,7 @@ import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardImageCaptureExtender;
 
 import java.util.List;
 
@@ -35,89 +37,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class NightImageCaptureExtenderImpl implements ImageCaptureExtenderImpl {
-    public NightImageCaptureExtenderImpl() {}
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureProcessorImpl getCaptureProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<CaptureStageImpl> getCaptureStages() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public int getMaxCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public Range<Long> getEstimatedCaptureLatencyRange(@Nullable Size captureOutputSize) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureRequest.Key> getAvailableCaptureRequestKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public List<CaptureResult.Key> getAvailableCaptureResultKeys() {
-        throw new RuntimeException("Stub, replace with implementation.");
+public final class NightImageCaptureExtenderImpl extends ForwardImageCaptureExtender {
+    public NightImageCaptureExtenderImpl() {
+        super(CameraExtensionCharacteristics.EXTENSION_NIGHT);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightPreviewExtenderImpl.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightPreviewExtenderImpl.java
index eeb254b2..973e79cf 100755
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightPreviewExtenderImpl.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/NightPreviewExtenderImpl.java
@@ -18,11 +18,13 @@ package androidx.camera.extensions.impl;
 
 import android.content.Context;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CameraExtensionCharacteristics;
 import android.util.Pair;
 import android.util.Size;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.serviceforward.ForwardPreviewExtender;
 
 import java.util.List;
 
@@ -33,73 +35,8 @@ import java.util.List;
  *
  * @since 1.0
  */
-public final class NightPreviewExtenderImpl implements PreviewExtenderImpl {
+public final class NightPreviewExtenderImpl extends ForwardPreviewExtender {
     public NightPreviewExtenderImpl() {
-    }
-
-    @Override
-    public boolean isExtensionAvailable(@NonNull String cameraId,
-            @Nullable CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void init(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public CaptureStageImpl getCaptureStage() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @NonNull
-    @Override
-    public ProcessorType getProcessorType() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public ProcessorImpl getProcessor() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onInit(@NonNull String cameraId,
-            @NonNull CameraCharacteristics cameraCharacteristics,
-            @NonNull Context context) {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Override
-    public void onDeInit() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onPresetSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onEnableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public CaptureStageImpl onDisableSession() {
-        throw new RuntimeException("Stub, replace with implementation.");
-    }
-
-    @Nullable
-    @Override
-    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
-        throw new RuntimeException("Stub, replace with implementation.");
+        super(CameraExtensionCharacteristics.EXTENSION_NIGHT);
     }
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CameraMetadataWrapper.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CameraMetadataWrapper.java
index 100203b2..02f83142 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CameraMetadataWrapper.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CameraMetadataWrapper.java
@@ -39,6 +39,10 @@ public class CameraMetadataWrapper implements Parcelable {
         }
     }
 
+    public CameraMetadataWrapper(CameraMetadataNative cameraMetadataNative) {
+        mCameraMetadataNative = cameraMetadataNative;
+    }
+
     protected CameraMetadataWrapper(Parcel in) {
         mCameraMetadataNative = in.readParcelable(CameraMetadataNative.class.getClassLoader());
     }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CaptureBundle.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CaptureBundle.aidl
new file mode 100644
index 00000000..6b21485d
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CaptureBundle.aidl
@@ -0,0 +1,27 @@
+
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+import androidx.camera.extensions.impl.service.ImageWrapper;
+
+parcelable CaptureBundle
+{
+    int stageId;
+    CameraMetadataWrapper captureResult;
+    ImageWrapper captureImage;
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CaptureStageImplWrapper.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CaptureStageImplWrapper.aidl
new file mode 100644
index 00000000..3092d766
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/CaptureStageImplWrapper.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+
+parcelable CaptureStageImplWrapper
+{
+    int id;
+    CameraMetadataWrapper parameters;
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/ICaptureProcessorImpl.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/ICaptureProcessorImpl.aidl
new file mode 100644
index 00000000..d3d73589
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/ICaptureProcessorImpl.aidl
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.CaptureBundle;
+import androidx.camera.extensions.impl.service.IProcessResultImpl;
+import androidx.camera.extensions.impl.service.Size;
+
+import android.view.Surface;
+
+interface ICaptureProcessorImpl
+{
+    void onOutputSurface(in Surface surface, int imageFormat);
+    void onResolutionUpdate(in Size size);
+    void onImageFormatUpdate(int imageFormat);
+    void process(in List<CaptureBundle> capturelist, in IProcessResultImpl resultCallback);
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IExtensionsService.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IExtensionsService.aidl
index db73ad00..5f0bc57d 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IExtensionsService.aidl
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IExtensionsService.aidl
@@ -19,11 +19,16 @@ package androidx.camera.extensions.impl.service;
 import androidx.camera.extensions.impl.service.IOnExtensionsInitializedCallback;
 import androidx.camera.extensions.impl.service.IOnExtensionsDeinitializedCallback;
 import androidx.camera.extensions.impl.service.IAdvancedExtenderImpl;
+import androidx.camera.extensions.impl.service.IPreviewExtenderImpl;
+import androidx.camera.extensions.impl.service.IImageCaptureExtenderImpl;
+
 import androidx.camera.extensions.impl.service.Size;
 
 interface IExtensionsService {
     boolean isAdvancedExtenderImplemented();
     void initialize(in String version, in IOnExtensionsInitializedCallback callback);
     void deInitialize(in IOnExtensionsDeinitializedCallback callback);
-    @nullable IAdvancedExtenderImpl initializeAdvancedExtension(int extensionType);
+    IAdvancedExtenderImpl initializeAdvancedExtension(int extensionType);
+    IPreviewExtenderImpl initializePreviewExtension(int extensionType);
+    IImageCaptureExtenderImpl initializeImageCaptureExtension(int extensionType);
 }
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IImageCaptureExtenderImpl.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IImageCaptureExtenderImpl.aidl
new file mode 100644
index 00000000..0ce4856e
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IImageCaptureExtenderImpl.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+import androidx.camera.extensions.impl.service.SizeList;
+import androidx.camera.extensions.impl.service.ICaptureProcessorImpl;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+import androidx.camera.extensions.impl.service.LatencyRange;
+import androidx.camera.extensions.impl.service.Size;
+
+
+interface IImageCaptureExtenderImpl
+{
+    void onInit(in String cameraId);
+    void onDeInit();
+    @nullable CaptureStageImplWrapper onPresetSession();
+    @nullable CaptureStageImplWrapper onEnableSession();
+    @nullable CaptureStageImplWrapper onDisableSession();
+    boolean isExtensionAvailable(in String cameraId);
+    void init(in String cameraId);
+    @nullable ICaptureProcessorImpl getCaptureProcessor();
+    List<CaptureStageImplWrapper> getCaptureStages();
+    int getMaxCaptureStage();
+    @nullable List<SizeList> getSupportedResolutions();
+    @nullable LatencyRange getEstimatedCaptureLatencyRange(in Size outputSize);
+    CameraMetadataWrapper getAvailableCaptureRequestKeys();
+    CameraMetadataWrapper getAvailableCaptureResultKeys();
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IPreviewExtenderImpl.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IPreviewExtenderImpl.aidl
new file mode 100644
index 00000000..193c4dc7
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IPreviewExtenderImpl.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+import androidx.camera.extensions.impl.service.SizeList;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+import androidx.camera.extensions.impl.service.IPreviewImageProcessorImpl;
+import androidx.camera.extensions.impl.service.IRequestUpdateProcessorImpl;
+
+interface IPreviewExtenderImpl
+{
+    void onInit(in String cameraId);
+    void onDeInit();
+    @nullable CaptureStageImplWrapper onPresetSession();
+    @nullable CaptureStageImplWrapper onEnableSession();
+    @nullable CaptureStageImplWrapper onDisableSession();
+    boolean isExtensionAvailable(in String cameraId);
+    void init(in String cameraId);
+    @nullable CaptureStageImplWrapper getCaptureStage();
+    const int PROCESSOR_TYPE_REQUEST_UPDATE_ONLY = 0;
+    const int PROCESSOR_TYPE_IMAGE_PROCESSOR = 1;
+    const int PROCESSOR_TYPE_NONE = 2;
+    int getProcessorType();
+    @nullable IPreviewImageProcessorImpl getPreviewImageProcessor();
+    @nullable IRequestUpdateProcessorImpl getRequestUpdateProcessor();
+    @nullable List<SizeList> getSupportedResolutions();
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IPreviewImageProcessorImpl.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IPreviewImageProcessorImpl.aidl
new file mode 100644
index 00000000..22ccfd14
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IPreviewImageProcessorImpl.aidl
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.TotalCaptureResultWrapper;
+import androidx.camera.extensions.impl.service.IProcessResultImpl;
+import androidx.camera.extensions.impl.service.Size;
+import androidx.camera.extensions.impl.service.ImageWrapper;
+import android.view.Surface;
+
+
+interface IPreviewImageProcessorImpl
+{
+    void onOutputSurface(in Surface surface, int imageFormat);
+    void onResolutionUpdate(in Size size);
+    void onImageFormatUpdate(int imageFormat);
+    void process(in ImageWrapper image, in TotalCaptureResultWrapper result,
+            in IProcessResultImpl resultCallback);
+
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IProcessResultImpl.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IProcessResultImpl.aidl
new file mode 100644
index 00000000..f921ea02
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IProcessResultImpl.aidl
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+
+interface IProcessResultImpl
+{
+    void onCaptureCompleted(long shutterTimestamp, in CameraMetadataWrapper results);
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IRequestUpdateProcessorImpl.aidl b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IRequestUpdateProcessorImpl.aidl
new file mode 100644
index 00000000..f6e78d2b
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/service/IRequestUpdateProcessorImpl.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.service;
+
+import androidx.camera.extensions.impl.service.TotalCaptureResultWrapper;
+import androidx.camera.extensions.impl.service.Size;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+import android.view.Surface;
+
+
+interface IRequestUpdateProcessorImpl
+{
+    @nullable CaptureStageImplWrapper process(in TotalCaptureResultWrapper result);
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/CaptureStageImplAdapter.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/CaptureStageImplAdapter.java
new file mode 100644
index 00000000..43ddf4a9
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/CaptureStageImplAdapter.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.serviceforward;
+
+import android.hardware.camera2.CaptureRequest;
+import android.util.Pair;
+
+import androidx.camera.extensions.impl.CaptureStageImpl;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+class CaptureStageImplAdapter implements CaptureStageImpl {
+    private final CaptureStageImplWrapper mCaptureStageImplWrapper;
+    CaptureStageImplAdapter(CaptureStageImplWrapper wrapper) {
+        mCaptureStageImplWrapper = wrapper;
+    }
+
+    @Override
+    public int getId() {
+        return mCaptureStageImplWrapper.id;
+    }
+
+    @Override
+    public List<Pair<CaptureRequest.Key, Object>> getParameters() {
+        CaptureRequest request = mCaptureStageImplWrapper.parameters.toCaptureRequest();
+        List<Pair<CaptureRequest.Key, Object>> result = new ArrayList<>();
+        for (CaptureRequest.Key<?> key : request.getKeys()) {
+            result.add(new Pair(key, request.get(key)));
+        }
+        return result;
+    }
+}
\ No newline at end of file
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardAdvancedExtender.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardAdvancedExtender.java
index 40f2c136..dc57590a 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardAdvancedExtender.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardAdvancedExtender.java
@@ -84,7 +84,6 @@ public class ForwardAdvancedExtender implements AdvancedExtenderImpl {
             throw new IllegalStateException("init failed", e);
         }
     }
-
     @Override
     @Nullable
     public Range<Long> getEstimatedCaptureLatencyRange(@NonNull String cameraId,
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardImageCaptureExtender.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardImageCaptureExtender.java
new file mode 100644
index 00000000..03de94bf
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardImageCaptureExtender.java
@@ -0,0 +1,365 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.serviceforward;
+
+import android.content.Context;
+import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CaptureRequest;
+import android.hardware.camera2.CaptureResult;
+import android.hardware.camera2.TotalCaptureResult;
+import android.media.Image;
+import android.os.RemoteException;
+import android.util.Log;
+import android.util.Pair;
+import android.util.Range;
+import android.util.Size;
+import android.view.Surface;
+
+import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.CaptureProcessorImpl;
+import androidx.camera.extensions.impl.CaptureStageImpl;
+import androidx.camera.extensions.impl.ImageCaptureExtenderImpl;
+import androidx.camera.extensions.impl.ProcessResultImpl;
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+import androidx.camera.extensions.impl.service.CaptureBundle;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+import androidx.camera.extensions.impl.service.ICaptureProcessorImpl;
+import androidx.camera.extensions.impl.service.IImageCaptureExtenderImpl;
+import androidx.camera.extensions.impl.service.IProcessResultImpl;
+import androidx.camera.extensions.impl.service.ImageWrapper;
+import androidx.camera.extensions.impl.service.LatencyRange;
+import androidx.camera.extensions.impl.service.SizeList;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Executor;
+
+public class ForwardImageCaptureExtender implements ImageCaptureExtenderImpl {
+
+    private static final String TAG = "ForwardPreviewExtender";
+
+    private final int mExtensionType;
+    private IImageCaptureExtenderImpl mIImageCaptureExtender;
+
+    public ForwardImageCaptureExtender(int extensionType) {
+        mExtensionType = extensionType;
+        mIImageCaptureExtender = ServiceManager.getInstance()
+                .createImageCaptureExtenderImpl(extensionType);
+    }
+
+    @Nullable
+    private static CaptureStageImpl convertToCaptureStageImpl(
+            @Nullable CaptureStageImplWrapper wrapper) {
+        if (wrapper == null) {
+            return null;
+        }
+
+        return new CaptureStageImplAdapter(wrapper);
+    }
+
+    @Override
+    public void onInit(String cameraId, CameraCharacteristics cameraCharacteristics,
+            Context context) {
+        try {
+            mIImageCaptureExtender.onInit(cameraId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "onInit failed", e);
+            throw new IllegalStateException("onInit failed", e);
+        }
+    }
+
+    @Override
+    public void onDeInit() {
+        try {
+            mIImageCaptureExtender.onDeInit();
+        } catch (RemoteException e) {
+            Log.e(TAG, "onDeInit failed", e);
+            throw new IllegalStateException("onDeInit failed", e);
+        }
+    }
+
+    @Override
+    public CaptureStageImpl onPresetSession() {
+        try {
+            return convertToCaptureStageImpl(mIImageCaptureExtender.onPresetSession());
+        } catch (RemoteException e) {
+            Log.e(TAG, "onPresetSession failed", e);
+            throw new IllegalStateException("onPresetSession failed", e);
+        }
+    }
+
+    @Override
+    public CaptureStageImpl onEnableSession() {
+        try {
+            return convertToCaptureStageImpl(mIImageCaptureExtender.onEnableSession());
+        } catch (RemoteException e) {
+            Log.e(TAG, "onEnableSession failed", e);
+            throw new IllegalStateException("onEnableSession failed", e);
+        }
+    }
+
+    @Override
+    public CaptureStageImpl onDisableSession() {
+        try {
+            return convertToCaptureStageImpl(mIImageCaptureExtender.onDisableSession());
+        } catch (RemoteException e) {
+            Log.e(TAG, "onDisableSession failed", e);
+            throw new IllegalStateException("onDisableSession failed", e);
+        }
+    }
+
+    @Override
+    public boolean isExtensionAvailable(String cameraId,
+            CameraCharacteristics cameraCharacteristics) {
+        try {
+            return mIImageCaptureExtender.isExtensionAvailable(cameraId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "isExtensionAvailable failed", e);
+            throw new IllegalStateException("isExtensionAvailable failed", e);
+        }
+    }
+
+    @Override
+    public void init(String cameraId, CameraCharacteristics cameraCharacteristics) {
+        try {
+            mIImageCaptureExtender.init(cameraId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "init failed", e);
+            throw new IllegalStateException("init failed", e);
+        }
+    }
+
+    @Override
+    public CaptureProcessorImpl getCaptureProcessor() {
+        try {
+            ICaptureProcessorImpl captureProcessor = mIImageCaptureExtender.getCaptureProcessor();
+            if (captureProcessor == null) {
+                return null;
+            }
+            return new CaptureProcessorImplAdapter(captureProcessor);
+        } catch (RemoteException e) {
+            Log.e(TAG, "getCaptureProcessor failed", e);
+            throw new IllegalStateException("getCaptureProcessor failed", e);
+        }
+    }
+
+    @Override
+    public List<CaptureStageImpl> getCaptureStages() {
+        try {
+            List<CaptureStageImpl> results = new ArrayList<>();
+            for (CaptureStageImplWrapper wrapper : mIImageCaptureExtender.getCaptureStages()) {
+                results.add(convertToCaptureStageImpl(wrapper));
+            }
+            return results;
+        } catch (RemoteException e) {
+            Log.e(TAG, "getCaptureStages failed", e);
+            throw new IllegalStateException("getCaptureStages failed", e);
+        }
+    }
+
+    @Override
+    public int getMaxCaptureStage() {
+        try {
+            return mIImageCaptureExtender.getMaxCaptureStage();
+        } catch (RemoteException e) {
+            Log.e(TAG, "getMaxCaptureStage failed", e);
+            throw new IllegalStateException("getMaxCaptureStage failed", e);
+        }
+    }
+
+    @Override
+    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
+        try {
+            List<SizeList> sizes = mIImageCaptureExtender.getSupportedResolutions();
+            if (sizes == null) {
+                return null;
+            }
+
+            List<Pair<Integer, Size[]>> list = new ArrayList<>();
+            for (SizeList sizeList : sizes) {
+                Size[] sizeArray = new Size[sizeList.sizes.size()];
+                for (int i = 0; i < sizeList.sizes.size(); i++) {
+                    sizeArray[i] = new Size(sizeList.sizes.get(i).width,
+                            sizeList.sizes.get(i).height);
+                }
+                list.add(new Pair(sizeList.format, sizeArray));
+            }
+            return list;
+        } catch (RemoteException e) {
+            Log.e(TAG, "getSupportedResolutions failed", e);
+            throw new IllegalStateException("getSupportedResolutions failed", e);
+        }
+    }
+
+    @Override
+    public Range<Long> getEstimatedCaptureLatencyRange(Size captureOutputSize) {
+        try {
+            androidx.camera.extensions.impl.service.Size size = null;
+            if (captureOutputSize != null) {
+                size = new androidx.camera.extensions.impl.service.Size();
+                size.width = captureOutputSize.getWidth();
+                size.height = captureOutputSize.getHeight();
+            }
+            LatencyRange latencyRange =
+                    mIImageCaptureExtender.getEstimatedCaptureLatencyRange(size);
+            if (latencyRange == null) {
+                return null;
+            }
+
+            return new Range<Long>(latencyRange.min, latencyRange.max);
+        } catch (RemoteException e) {
+            Log.e(TAG, "getEstimatedCaptureLatencyRange failed", e);
+            throw new IllegalStateException("getEstimatedCaptureLatencyRange failed", e);
+        }
+    }
+
+    @Override
+    public List<CaptureRequest.Key> getAvailableCaptureRequestKeys() {
+        try {
+            CameraMetadataWrapper cameraMetadataWrapper
+                    = mIImageCaptureExtender.getAvailableCaptureRequestKeys();
+            if (cameraMetadataWrapper == null) {
+                return null;
+            }
+
+            CaptureRequest captureRequest = cameraMetadataWrapper.toCaptureRequest();
+            List<CaptureRequest.Key> result = new ArrayList<>();
+            for (CaptureRequest.Key<?> key : captureRequest.getKeys()) {
+                result.add(key);
+            }
+            return result;
+        } catch (RemoteException e) {
+            Log.e(TAG, "getAvailableCaptureRequestKeys failed", e);
+            throw new IllegalStateException("getAvailableCaptureRequestKeys failed", e);
+        }
+    }
+
+    @Override
+    public List<CaptureResult.Key> getAvailableCaptureResultKeys() {
+        try {
+            CameraMetadataWrapper cameraMetadataWrapper
+                    = mIImageCaptureExtender.getAvailableCaptureResultKeys();
+            if (cameraMetadataWrapper == null) {
+                return null;
+            }
+
+            TotalCaptureResult captureResult = cameraMetadataWrapper.toTotalCaptureResult();
+            List<CaptureResult.Key> result = new ArrayList<>();
+            for (CaptureResult.Key<?> key : captureResult.getKeys()) {
+                result.add(key);
+            }
+            return result;
+        } catch (RemoteException e) {
+            Log.e(TAG, "getAvailableCaptureResultKeys failed", e);
+            throw new IllegalStateException("getAvailableCaptureResultKeys failed", e);
+        }
+    }
+
+    private static class CaptureProcessorImplAdapter implements CaptureProcessorImpl {
+        private ICaptureProcessorImpl mICaptureProcessor;
+
+        private CaptureProcessorImplAdapter(ICaptureProcessorImpl iCaptureProcessor) {
+            mICaptureProcessor = iCaptureProcessor;
+        }
+
+        @Override
+        public void process(Map<Integer, Pair<Image, TotalCaptureResult>> results) {
+            process(results, null, null);
+        }
+
+        @Override
+        public void process(Map<Integer, Pair<Image, TotalCaptureResult>> results,
+                ProcessResultImpl resultCallback, Executor executor) {
+
+            try {
+                List<CaptureBundle> captureBundleList = new ArrayList<>();
+                for (Integer captureStageId : results.keySet()) {
+                    CaptureBundle bundle = new CaptureBundle();
+                    bundle.stageId = captureStageId;
+                    Pair<Image, TotalCaptureResult> pair = results.get(captureStageId);
+
+                    bundle.captureResult =
+                            new CameraMetadataWrapper(pair.second.getNativeMetadata());
+                    bundle.captureImage = new ImageWrapper(pair.first);
+                    captureBundleList.add(bundle);
+                }
+
+                IProcessResultImpl.Stub iProcessResultImpl = null;
+                if (resultCallback != null) {
+                    iProcessResultImpl = new IProcessResultImpl.Stub() {
+                        @Override
+                        public void onCaptureCompleted(long shutterTimestamp,
+                                CameraMetadataWrapper result) {
+                            List<Pair<CaptureResult.Key, Object>> resultList = new ArrayList<>();
+                            TotalCaptureResult captureResult = result.toTotalCaptureResult();
+                            for (CaptureResult.Key<?> key : captureResult.getKeys()) {
+                                resultList.add(new Pair(key, captureResult.get(key)));
+                            }
+                            if (executor == null) {
+                                resultCallback.onCaptureCompleted(shutterTimestamp,
+                                        resultList);
+                            } else {
+                                executor.execute(() -> {
+                                    resultCallback.onCaptureCompleted(shutterTimestamp,
+                                            resultList);
+                                });
+                            }
+                        }
+                    };
+                }
+                mICaptureProcessor.process(captureBundleList, iProcessResultImpl);
+            } catch (RemoteException e) {
+
+            }
+        }
+
+        @Override
+        public void onOutputSurface(Surface surface, int imageFormat) {
+            try {
+                mICaptureProcessor.onOutputSurface(surface, imageFormat);
+            } catch (RemoteException e) {
+                Log.e(TAG, "CaptureProcessor onOutputSurface failed", e);
+                throw new IllegalStateException("CaptureProcessor onOutputSurface failed", e);
+            }
+        }
+
+        @Override
+        public void onResolutionUpdate(Size size) {
+            try {
+                androidx.camera.extensions.impl.service.Size serviceSize
+                        = new androidx.camera.extensions.impl.service.Size();
+                serviceSize.width = size.getWidth();
+                serviceSize.height = size.getHeight();
+                mICaptureProcessor.onResolutionUpdate(serviceSize);
+            } catch (RemoteException e) {
+                Log.e(TAG, "CaptureProcessor onResolutionUpdate failed", e);
+                throw new IllegalStateException("CaptureProcessor onResolutionUpdate failed", e);
+            }
+        }
+
+        @Override
+        public void onImageFormatUpdate(int imageFormat) {
+            try {
+                mICaptureProcessor.onImageFormatUpdate(imageFormat);
+            } catch (RemoteException e) {
+                Log.e(TAG, "CaptureProcessor imageFormat failed", e);
+                throw new IllegalStateException("CaptureProcessor imageFormat failed", e);
+            }
+        }
+    }
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardPreviewExtender.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardPreviewExtender.java
new file mode 100644
index 00000000..81969ca4
--- /dev/null
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ForwardPreviewExtender.java
@@ -0,0 +1,322 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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 androidx.camera.extensions.impl.serviceforward;
+
+import android.content.Context;
+import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CaptureResult;
+import android.hardware.camera2.TotalCaptureResult;
+import android.media.Image;
+import android.os.RemoteException;
+import android.util.Log;
+import android.util.Pair;
+import android.util.Size;
+import android.view.Surface;
+
+import androidx.annotation.Nullable;
+import androidx.camera.extensions.impl.CaptureStageImpl;
+import androidx.camera.extensions.impl.PreviewExtenderImpl;
+import androidx.camera.extensions.impl.PreviewImageProcessorImpl;
+import androidx.camera.extensions.impl.ProcessResultImpl;
+import androidx.camera.extensions.impl.ProcessorImpl;
+import androidx.camera.extensions.impl.RequestUpdateProcessorImpl;
+import androidx.camera.extensions.impl.service.CameraMetadataWrapper;
+import androidx.camera.extensions.impl.service.CaptureStageImplWrapper;
+import androidx.camera.extensions.impl.service.IPreviewExtenderImpl;
+import androidx.camera.extensions.impl.service.IPreviewImageProcessorImpl;
+import androidx.camera.extensions.impl.service.IProcessResultImpl;
+import androidx.camera.extensions.impl.service.IRequestUpdateProcessorImpl;
+import androidx.camera.extensions.impl.service.ImageWrapper;
+import androidx.camera.extensions.impl.service.TotalCaptureResultWrapper;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executor;
+
+public class ForwardPreviewExtender implements PreviewExtenderImpl {
+    private static final String TAG = "ForwardPreviewExtender";
+
+    private final int mExtensionType;
+    private IPreviewExtenderImpl mIPreviewExtender;
+
+    public ForwardPreviewExtender(int extensionType) {
+        mExtensionType = extensionType;
+        mIPreviewExtender = ServiceManager.getInstance().createPreviewExtenderImpl(extensionType);
+    }
+
+    @Nullable
+    private static CaptureStageImpl convertToCaptureStageImpl(
+            @Nullable CaptureStageImplWrapper wrapper) {
+        if (wrapper == null) {
+            return null;
+        }
+
+        return new CaptureStageImplAdapter(wrapper);
+    }
+
+    @Override
+    public void onInit(String cameraId, CameraCharacteristics cameraCharacteristics,
+            Context context) {
+        try {
+            mIPreviewExtender.onInit(cameraId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "onInit failed", e);
+            throw new IllegalStateException("onInit failed", e);
+        }
+    }
+
+    @Override
+    public void onDeInit() {
+        try {
+            mIPreviewExtender.onDeInit();
+        } catch (RemoteException e) {
+            Log.e(TAG, "onDeInit failed", e);
+            throw new IllegalStateException("onDeInit failed", e);
+        }
+    }
+
+    @Override
+    public CaptureStageImpl onPresetSession() {
+        try {
+            return convertToCaptureStageImpl(mIPreviewExtender.onPresetSession());
+        } catch (RemoteException e) {
+            Log.e(TAG, "onPresetSession failed", e);
+            throw new IllegalStateException("onDeInit failed", e);
+        }
+    }
+
+    @Override
+    public CaptureStageImpl onEnableSession() {
+        try {
+            return convertToCaptureStageImpl(mIPreviewExtender.onEnableSession());
+        } catch (RemoteException e) {
+            Log.e(TAG, "onEnableSession failed", e);
+            throw new IllegalStateException("onEnableSession failed", e);
+        }
+    }
+
+    @Override
+    public CaptureStageImpl onDisableSession() {
+        try {
+            return convertToCaptureStageImpl(mIPreviewExtender.onDisableSession());
+        } catch (RemoteException e) {
+            Log.e(TAG, "onDisableSession failed", e);
+            throw new IllegalStateException("onDisableSession failed", e);
+        }
+    }
+
+    @Override
+    public boolean isExtensionAvailable(String cameraId,
+            CameraCharacteristics cameraCharacteristics) {
+        try {
+            return mIPreviewExtender.isExtensionAvailable(cameraId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "isExtensionAvailable failed", e);
+            throw new IllegalStateException("isExtensionAvailable failed", e);
+        }
+    }
+
+    @Override
+    public void init(String cameraId, CameraCharacteristics cameraCharacteristics) {
+        try {
+            mIPreviewExtender.init(cameraId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "init failed", e);
+            throw new IllegalStateException("init failed", e);
+        }
+    }
+
+    @Override
+    public CaptureStageImpl getCaptureStage() {
+        try {
+            return convertToCaptureStageImpl(mIPreviewExtender.getCaptureStage());
+        } catch (RemoteException e) {
+            Log.e(TAG, "getCaptureStage failed", e);
+            throw new IllegalStateException("getCaptureStage failed", e);
+        }
+    }
+
+    @Override
+    public ProcessorType getProcessorType() {
+        try {
+            switch (mIPreviewExtender.getProcessorType()) {
+                case IPreviewExtenderImpl.PROCESSOR_TYPE_REQUEST_UPDATE_ONLY:
+                    return ProcessorType.PROCESSOR_TYPE_REQUEST_UPDATE_ONLY;
+                case IPreviewExtenderImpl.PROCESSOR_TYPE_IMAGE_PROCESSOR:
+                    return ProcessorType.PROCESSOR_TYPE_IMAGE_PROCESSOR;
+                case IPreviewExtenderImpl.PROCESSOR_TYPE_NONE:
+                default:
+                    return ProcessorType.PROCESSOR_TYPE_NONE;
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "getProcessorType failed", e);
+            throw new IllegalStateException("getProcessorType failed", e);
+        }
+    }
+
+    @Override
+    public ProcessorImpl getProcessor() {
+        try {
+            switch (getProcessorType()) {
+                case PROCESSOR_TYPE_REQUEST_UPDATE_ONLY:
+                    return new RequestUpdateProcessorAdapter(
+                            mIPreviewExtender.getRequestUpdateProcessor());
+                case PROCESSOR_TYPE_IMAGE_PROCESSOR:
+                    return new PreviewImageProcessorAdapter(
+                            mIPreviewExtender.getPreviewImageProcessor());
+                case PROCESSOR_TYPE_NONE:
+                default:
+                    return null;
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "getProcessorType failed", e);
+            throw new IllegalStateException("getProcessorType failed", e);
+        }
+    }
+
+    @Nullable
+    @Override
+    public List<Pair<Integer, Size[]>> getSupportedResolutions() {
+        return null;
+    }
+
+    private static class PreviewImageProcessorAdapter implements PreviewImageProcessorImpl {
+
+        private final IPreviewImageProcessorImpl mIPreviewImageProcessor;
+
+        private PreviewImageProcessorAdapter(IPreviewImageProcessorImpl iPreviewImageProcessor) {
+            mIPreviewImageProcessor = iPreviewImageProcessor;
+        }
+
+        @Override
+        public void process(Image image, TotalCaptureResult result) {
+            try {
+                mIPreviewImageProcessor.process(
+                        new ImageWrapper(image), new TotalCaptureResultWrapper(result), null);
+            } catch (RemoteException e) {
+
+            }
+        }
+
+        @Override
+        public void process(Image image, TotalCaptureResult result,
+                ProcessResultImpl resultCallback, @Nullable Executor executor) {
+            try {
+
+                IProcessResultImpl.Stub iProcessResultImpl = null;
+                if (resultCallback != null) {
+                    iProcessResultImpl = new IProcessResultImpl.Stub() {
+                        @Override
+                        public void onCaptureCompleted(long shutterTimestamp,
+                                CameraMetadataWrapper result) {
+                            List<Pair<CaptureResult.Key, Object>> resultList = new ArrayList<>();
+                            TotalCaptureResult captureResult = result.toTotalCaptureResult();
+                            for (CaptureResult.Key<?> key : captureResult.getKeys()) {
+                                resultList.add(new Pair(key, captureResult.get(key)));
+                            }
+                            if (executor == null) {
+                                resultCallback.onCaptureCompleted(shutterTimestamp,
+                                        resultList);
+                            } else {
+                                executor.execute(() -> {
+                                    resultCallback.onCaptureCompleted(shutterTimestamp,
+                                            resultList);
+                                });
+                            }
+                        }
+                    };
+                }
+                mIPreviewImageProcessor.process(
+                        new ImageWrapper(image), new TotalCaptureResultWrapper(result),
+                        iProcessResultImpl);
+                image.close();
+            } catch (RemoteException e) {
+
+            }
+        }
+
+        @Override
+        public void onOutputSurface(Surface surface, int imageFormat) {
+            try {
+                mIPreviewImageProcessor.onOutputSurface(surface, imageFormat);
+            } catch (RemoteException e) {
+                Log.e(TAG, "PreviewImageProcessorAdapter onOutputSurface failed", e);
+                throw new IllegalStateException(
+                        "PreviewImageProcessorAdapter onOutputSurface failed", e);
+            }
+        }
+
+        @Override
+        public void onResolutionUpdate(Size size) {
+            try {
+                androidx.camera.extensions.impl.service.Size serviceSize =
+                        new androidx.camera.extensions.impl.service.Size();
+                serviceSize.width = size.getWidth();
+                serviceSize.height = size.getHeight();
+                mIPreviewImageProcessor.onResolutionUpdate(serviceSize);
+            } catch (RemoteException e) {
+                Log.e(TAG, "PreviewImageProcessorAdapter onResolutionUpdate", e);
+                throw new IllegalStateException(
+                        "PreviewImageProcessorAdapter onResolutionUpdate failed", e);
+            }
+        }
+
+        @Override
+        public void onImageFormatUpdate(int imageFormat) {
+            try {
+                mIPreviewImageProcessor.onImageFormatUpdate(imageFormat);
+            } catch (RemoteException e) {
+                Log.e(TAG, "PreviewImageProcessorAdapter onImageFormatUpdate failed", e);
+                throw new IllegalStateException(
+                        "PreviewImageProcessorAdapter onImageFormatUpdate failed", e);
+            }
+        }
+    }
+
+    private static class RequestUpdateProcessorAdapter
+            implements RequestUpdateProcessorImpl {
+        private IRequestUpdateProcessorImpl mIRequestUpdateProcessor;
+
+        private RequestUpdateProcessorAdapter(IRequestUpdateProcessorImpl iRequestUpdateProcessor) {
+            mIRequestUpdateProcessor = iRequestUpdateProcessor;
+        }
+
+        @Override
+        public void onOutputSurface(Surface surface, int imageFormat) {
+        }
+
+        @Override
+        public void onResolutionUpdate(Size size) {
+        }
+
+        @Override
+        public void onImageFormatUpdate(int imageFormat) {
+        }
+
+        @Nullable
+        @Override
+        public CaptureStageImpl process(TotalCaptureResult result) {
+            try {
+                return convertToCaptureStageImpl(
+                        mIRequestUpdateProcessor.process(new TotalCaptureResultWrapper(result)));
+            } catch (RemoteException e) {
+                Log.e(TAG, "RequestUpdateProcessorAdapter process failed", e);
+                throw new IllegalStateException("RequestUpdateProcessorAdapter process failed", e);
+            }
+        }
+    }
+}
diff --git a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ServiceManager.java b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ServiceManager.java
index 7e27a7b6..b6e08b01 100644
--- a/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ServiceManager.java
+++ b/camera2/extensions/service_based_sample/oem_library/src/java/androidx/camera/extensions/impl/serviceforward/ServiceManager.java
@@ -29,6 +29,8 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.camera.extensions.impl.InitializerImpl;
 import androidx.camera.extensions.impl.service.IAdvancedExtenderImpl;
+import androidx.camera.extensions.impl.service.IImageCaptureExtenderImpl;
+import androidx.camera.extensions.impl.service.IPreviewExtenderImpl;
 import androidx.camera.extensions.impl.service.IExtensionsService;
 import androidx.camera.extensions.impl.service.IOnExtensionsDeinitializedCallback;
 import androidx.camera.extensions.impl.service.IOnExtensionsInitializedCallback;
@@ -168,4 +170,34 @@ public class ServiceManager {
             throw new IllegalStateException("initializeAdvancedExtension failed", e);
         }
     }
+
+    @NonNull
+    public IImageCaptureExtenderImpl createImageCaptureExtenderImpl(int extensionType) {
+        try {
+            synchronized (mLock) {
+                if (mExtensionService == null) {
+                    bindServiceSync(mContext);
+                }
+            }
+            return mExtensionService.initializeImageCaptureExtension(extensionType);
+        } catch (RemoteException e) {
+            Log.e(TAG, "initializeImageCaptureExtender failed", e);
+            throw new IllegalStateException("initializeImageCaptureExtender failed", e);
+        }
+    }
+
+    @NonNull
+    public IPreviewExtenderImpl createPreviewExtenderImpl(int extensionType) {
+        try {
+            synchronized (mLock) {
+                if (mExtensionService == null) {
+                    bindServiceSync(mContext);
+                }
+            }
+            return mExtensionService.initializePreviewExtension(extensionType);
+        } catch (RemoteException e) {
+            Log.e(TAG, "initializePreviewExtension failed", e);
+            throw new IllegalStateException("initializePreviewExtension failed", e);
+        }
+    }
 }