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diff --git a/services/camera/libcameraservice/api1/client2/ZslProcessor3.h b/services/camera/libcameraservice/api1/client2/ZslProcessor3.h
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+++ b/services/camera/libcameraservice/api1/client2/ZslProcessor3.h
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef ANDROID_SERVERS_CAMERA_CAMERA2_ZSLPROCESSOR3_H
+#define ANDROID_SERVERS_CAMERA_CAMERA2_ZSLPROCESSOR3_H
+
+#include <utils/Thread.h>
+#include <utils/String16.h>
+#include <utils/Vector.h>
+#include <utils/Mutex.h>
+#include <utils/Condition.h>
+#include <gui/BufferItemConsumer.h>
+#include <camera/CameraMetadata.h>
+
+#include "api1/client2/FrameProcessor.h"
+#include "api1/client2/ZslProcessorInterface.h"
+#include "device3/Camera3ZslStream.h"
+
+namespace android {
+
+class Camera2Client;
+
+namespace camera2 {
+
+class CaptureSequencer;
+class Parameters;
+
+/***
+ * ZSL queue processing
+ */
+class ZslProcessor3 :
+                    public ZslProcessorInterface,
+                    public camera3::Camera3StreamBufferListener,
+            virtual public Thread,
+            virtual public FrameProcessor::FilteredListener {
+  public:
+    ZslProcessor3(sp<Camera2Client> client, wp<CaptureSequencer> sequencer);
+    ~ZslProcessor3();
+
+    // From FrameProcessor
+    virtual void onFrameAvailable(int32_t requestId, const CameraMetadata &frame);
+
+    /**
+     ****************************************
+     * ZslProcessorInterface implementation *
+     ****************************************
+     */
+
+    virtual status_t updateStream(const Parameters &params);
+    virtual status_t deleteStream();
+    virtual int getStreamId() const;
+
+    virtual status_t pushToReprocess(int32_t requestId);
+    virtual status_t clearZslQueue();
+
+    void dump(int fd, const Vector<String16>& args) const;
+
+  protected:
+    /**
+     **********************************************
+     * Camera3StreamBufferListener implementation *
+     **********************************************
+     */
+    typedef camera3::Camera3StreamBufferListener::BufferInfo BufferInfo;
+    // Buffer was acquired by the HAL
+    virtual void onBufferAcquired(const BufferInfo& bufferInfo);
+    // Buffer was released by the HAL
+    virtual void onBufferReleased(const BufferInfo& bufferInfo);
+
+  private:
+    static const nsecs_t kWaitDuration = 10000000; // 10 ms
+
+    enum {
+        RUNNING,
+        LOCKED
+    } mState;
+
+    wp<Camera2Client> mClient;
+    wp<CaptureSequencer> mSequencer;
+
+    const int mId;
+
+    mutable Mutex mInputMutex;
+
+    enum {
+        NO_STREAM = -1
+    };
+
+    int mZslStreamId;
+    sp<camera3::Camera3ZslStream> mZslStream;
+
+    struct ZslPair {
+        BufferItemConsumer::BufferItem buffer;
+        CameraMetadata frame;
+    };
+
+    static const size_t kZslBufferDepth = 4;
+    static const size_t kFrameListDepth = kZslBufferDepth * 2;
+    Vector<CameraMetadata> mFrameList;
+    size_t mFrameListHead;
+
+    ZslPair mNextPair;
+
+    Vector<ZslPair> mZslQueue;
+    size_t mZslQueueHead;
+    size_t mZslQueueTail;
+
+    CameraMetadata mLatestCapturedRequest;
+
+    virtual bool threadLoop();
+
+    status_t clearZslQueueLocked();
+
+    void dumpZslQueue(int id) const;
+
+    nsecs_t getCandidateTimestampLocked(size_t* metadataIdx) const;
+};
+
+
+}; //namespace camera2
+}; //namespace android
+
+#endif