diff --git a/camera/ndk/impl/ACameraDevice.cpp b/camera/ndk/impl/ACameraDevice.cpp
index dd652c7..7997768 100644
--- a/camera/ndk/impl/ACameraDevice.cpp
+++ b/camera/ndk/impl/ACameraDevice.cpp
@@ -26,8 +26,6 @@
 #include "ACaptureRequest.h"
 #include "ACameraCaptureSession.h"
 
-#include "ACameraCaptureSession.inc"
-
 ACameraDevice::~ACameraDevice() {
     mDevice->stopLooperAndDisconnect();
 }
@@ -913,6 +911,7 @@
         case kWhatOnError:
         case kWhatSessionStateCb:
         case kWhatCaptureStart:
+        case kWhatCaptureStart2:
         case kWhatCaptureResult:
         case kWhatLogicalCaptureResult:
         case kWhatCaptureFail:
@@ -985,6 +984,7 @@
         }
         case kWhatSessionStateCb:
         case kWhatCaptureStart:
+        case kWhatCaptureStart2:
         case kWhatCaptureResult:
         case kWhatLogicalCaptureResult:
         case kWhatCaptureFail:
@@ -1004,6 +1004,7 @@
             sp<CaptureRequest> requestSp = nullptr;
             switch (msg->what()) {
                 case kWhatCaptureStart:
+                case kWhatCaptureStart2:
                 case kWhatCaptureResult:
                 case kWhatLogicalCaptureResult:
                 case kWhatCaptureFail:
@@ -1055,6 +1056,35 @@
                     freeACaptureRequest(request);
                     break;
                 }
+                case kWhatCaptureStart2:
+                {
+                    ACameraCaptureSession_captureCallback_startV2 onStart2;
+                    found = msg->findPointer(kCallbackFpKey, (void**) &onStart2);
+                    if (!found) {
+                        ALOGE("%s: Cannot find capture startV2 callback!", __FUNCTION__);
+                        return;
+                    }
+                    if (onStart2 == nullptr) {
+                        return;
+                    }
+                    int64_t timestamp;
+                    found = msg->findInt64(kTimeStampKey, &timestamp);
+                    if (!found) {
+                        ALOGE("%s: Cannot find timestamp!", __FUNCTION__);
+                        return;
+                    }
+                    int64_t frameNumber;
+                    found = msg->findInt64(kFrameNumberKey, &frameNumber);
+                    if (!found) {
+                        ALOGE("%s: Cannot find frame number!", __FUNCTION__);
+                        return;
+                    }
+
+                    ACaptureRequest* request = allocateACaptureRequest(requestSp, mId);
+                    (*onStart2)(context, session.get(), request, timestamp, frameNumber);
+                    freeACaptureRequest(request);
+                    break;
+                }
                 case kWhatCaptureResult:
                 {
                     ACameraCaptureSession_captureCallback_result onResult;
@@ -1285,7 +1315,8 @@
         ACameraCaptureSession_captureCallbacks* cbs) :
         mSession(session), mRequests(requests),
         mIsRepeating(isRepeating),
-        mIsLogicalCameraCallback(false) {
+        mIsLogicalCameraCallback(false),
+        mIs2Callback(false) {
     initCaptureCallbacks(cbs);
 
     if (cbs != nullptr) {
@@ -1301,7 +1332,8 @@
         ACameraCaptureSession_logicalCamera_captureCallbacks* lcbs) :
         mSession(session), mRequests(requests),
         mIsRepeating(isRepeating),
-        mIsLogicalCameraCallback(true) {
+        mIsLogicalCameraCallback(true),
+        mIs2Callback(false) {
     initCaptureCallbacks(lcbs);
 
     if (lcbs != nullptr) {
@@ -1310,6 +1342,40 @@
     }
 }
 
+CameraDevice::CallbackHolder::CallbackHolder(
+        sp<ACameraCaptureSession>          session,
+        const Vector<sp<CaptureRequest> >& requests,
+        bool                               isRepeating,
+        ACameraCaptureSession_captureCallbacksV2* cbs) :
+        mSession(session), mRequests(requests),
+        mIsRepeating(isRepeating),
+        mIsLogicalCameraCallback(false),
+        mIs2Callback(true) {
+    initCaptureCallbacksV2(cbs);
+
+    if (cbs != nullptr) {
+        mOnCaptureCompleted = cbs->onCaptureCompleted;
+        mOnCaptureFailed = cbs->onCaptureFailed;
+    }
+}
+
+CameraDevice::CallbackHolder::CallbackHolder(
+        sp<ACameraCaptureSession>          session,
+        const Vector<sp<CaptureRequest> >& requests,
+        bool                               isRepeating,
+        ACameraCaptureSession_logicalCamera_captureCallbacksV2* lcbs) :
+        mSession(session), mRequests(requests),
+        mIsRepeating(isRepeating),
+        mIsLogicalCameraCallback(true),
+        mIs2Callback(true) {
+    initCaptureCallbacksV2(lcbs);
+
+    if (lcbs != nullptr) {
+        mOnLogicalCameraCaptureCompleted = lcbs->onLogicalCameraCaptureCompleted;
+        mOnLogicalCameraCaptureFailed = lcbs->onLogicalCameraCaptureFailed;
+    }
+}
+
 void
 CameraDevice::checkRepeatingSequenceCompleteLocked(
     const int sequenceId, const int64_t lastFrameNumber) {
@@ -1536,7 +1602,6 @@
         const CaptureResultExtras& resultExtras,
         int64_t timestamp) {
     binder::Status ret = binder::Status::ok();
-
     sp<CameraDevice> dev = mDevice.promote();
     if (dev == nullptr) {
         return ret; // device has been closed
@@ -1551,11 +1616,14 @@
 
     int sequenceId = resultExtras.requestId;
     int32_t burstId = resultExtras.burstId;
+    int64_t frameNumber = resultExtras.frameNumber;
 
     auto it = dev->mSequenceCallbackMap.find(sequenceId);
     if (it != dev->mSequenceCallbackMap.end()) {
         CallbackHolder cbh = (*it).second;
+        bool v2Callback = cbh.mIs2Callback;
         ACameraCaptureSession_captureCallback_start onStart = cbh.mOnCaptureStarted;
+        ACameraCaptureSession_captureCallback_startV2 onStart2 = cbh.mOnCaptureStarted2;
         sp<ACameraCaptureSession> session = cbh.mSession;
         if ((size_t) burstId >= cbh.mRequests.size()) {
             ALOGE("%s: Error: request index %d out of bound (size %zu)",
@@ -1563,12 +1631,19 @@
             dev->setCameraDeviceErrorLocked(ACAMERA_ERROR_CAMERA_SERVICE);
         }
         sp<CaptureRequest> request = cbh.mRequests[burstId];
-        sp<AMessage> msg = new AMessage(kWhatCaptureStart, dev->mHandler);
+        sp<AMessage> msg = nullptr;
+        if (v2Callback) {
+            msg = new AMessage(kWhatCaptureStart2, dev->mHandler);
+            msg->setPointer(kCallbackFpKey, (void*) onStart2);
+        } else {
+            msg = new AMessage(kWhatCaptureStart, dev->mHandler);
+            msg->setPointer(kCallbackFpKey, (void *)onStart);
+        }
         msg->setPointer(kContextKey, cbh.mContext);
         msg->setObject(kSessionSpKey, session);
-        msg->setPointer(kCallbackFpKey, (void*) onStart);
         msg->setObject(kCaptureRequestKey, request);
         msg->setInt64(kTimeStampKey, timestamp);
+        msg->setInt64(kFrameNumberKey, frameNumber);
         dev->postSessionMsgAndCleanup(msg);
     }
     return ret;
diff --git a/camera/ndk/impl/ACameraDevice.h b/camera/ndk/impl/ACameraDevice.h
index 344d964..17988fe 100644
--- a/camera/ndk/impl/ACameraDevice.h
+++ b/camera/ndk/impl/ACameraDevice.h
@@ -215,6 +215,7 @@
         kWhatSessionStateCb,   // onReady, onActive
         // Capture callbacks
         kWhatCaptureStart,     // onCaptureStarted
+        kWhatCaptureStart2,     // onCaptureStarted
         kWhatCaptureResult,    // onCaptureProgressed, onCaptureCompleted
         kWhatLogicalCaptureResult, // onLogicalCameraCaptureCompleted
         kWhatCaptureFail,      // onCaptureFailed
@@ -294,11 +295,18 @@
                        const Vector<sp<CaptureRequest> >& requests,
                        bool                               isRepeating,
                        ACameraCaptureSession_logicalCamera_captureCallbacks* lcbs);
-
-        template <class T>
-        void initCaptureCallbacks(T* cbs) {
+        CallbackHolder(sp<ACameraCaptureSession>          session,
+                       const Vector<sp<CaptureRequest> >& requests,
+                       bool                               isRepeating,
+                       ACameraCaptureSession_captureCallbacksV2* cbs);
+        CallbackHolder(sp<ACameraCaptureSession>          session,
+                       const Vector<sp<CaptureRequest> >& requests,
+                       bool                               isRepeating,
+                       ACameraCaptureSession_logicalCamera_captureCallbacksV2* lcbs);
+        void clearCallbacks() {
             mContext = nullptr;
             mOnCaptureStarted = nullptr;
+            mOnCaptureStarted2 = nullptr;
             mOnCaptureProgressed = nullptr;
             mOnCaptureCompleted = nullptr;
             mOnLogicalCameraCaptureCompleted = nullptr;
@@ -307,6 +315,24 @@
             mOnCaptureSequenceCompleted = nullptr;
             mOnCaptureSequenceAborted = nullptr;
             mOnCaptureBufferLost = nullptr;
+        }
+
+        template <class T>
+        void initCaptureCallbacksV2(T* cbs) {
+            clearCallbacks();
+            if (cbs != nullptr) {
+                mContext = cbs->context;
+                mOnCaptureStarted2 = cbs->onCaptureStarted;
+                mOnCaptureProgressed = cbs->onCaptureProgressed;
+                mOnCaptureSequenceCompleted = cbs->onCaptureSequenceCompleted;
+                mOnCaptureSequenceAborted = cbs->onCaptureSequenceAborted;
+                mOnCaptureBufferLost = cbs->onCaptureBufferLost;
+            }
+        }
+
+        template <class T>
+        void initCaptureCallbacks(T* cbs) {
+            clearCallbacks();
             if (cbs != nullptr) {
                 mContext = cbs->context;
                 mOnCaptureStarted = cbs->onCaptureStarted;
@@ -320,9 +346,11 @@
         Vector<sp<CaptureRequest> > mRequests;
         const bool                  mIsRepeating;
         const bool                  mIsLogicalCameraCallback;
+        const bool                  mIs2Callback;
 
         void*                       mContext;
         ACameraCaptureSession_captureCallback_start mOnCaptureStarted;
+        ACameraCaptureSession_captureCallback_startV2 mOnCaptureStarted2;
         ACameraCaptureSession_captureCallback_result mOnCaptureProgressed;
         ACameraCaptureSession_captureCallback_result mOnCaptureCompleted;
         ACameraCaptureSession_logicalCamera_captureCallback_result mOnLogicalCameraCaptureCompleted;