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diff --git a/guest/hals/camera/fake-pipeline2/JpegCompressor.h b/guest/hals/camera/fake-pipeline2/JpegCompressor.h
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+++ b/guest/hals/camera/fake-pipeline2/JpegCompressor.h
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+/*
+ * Copyright (C) 2012 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.
+ */
+
+/**
+ * This class simulates a hardware JPEG compressor.  It receives image buffers
+ * in RGBA_8888 format, processes them in a worker thread, and then pushes them
+ * out to their destination stream.
+ */
+
+#ifndef HW_EMULATOR_CAMERA2_JPEG_H
+#define HW_EMULATOR_CAMERA2_JPEG_H
+
+#include "utils/Mutex.h"
+#include "utils/Thread.h"
+#include "utils/Timers.h"
+
+#include "Base.h"
+
+#include <stdio.h>
+
+extern "C" {
+#include <jpeglib.h>
+}
+
+namespace android {
+
+class JpegCompressor : private Thread, public virtual RefBase {
+ public:
+  JpegCompressor();
+  ~JpegCompressor();
+
+  struct JpegListener {
+    // Called when JPEG compression has finished, or encountered an error
+    virtual void onJpegDone(const StreamBuffer &jpegBuffer, bool success) = 0;
+    // Called when the input buffer for JPEG is not needed any more,
+    // if the buffer came from the framework.
+    virtual void onJpegInputDone(const StreamBuffer &inputBuffer) = 0;
+    virtual ~JpegListener();
+  };
+
+  // Start compressing COMPRESSED format buffers; JpegCompressor takes
+  // ownership of the Buffers vector.
+  // Reserve() must be called first.
+  status_t start(Buffers *buffers, JpegListener *listener);
+
+  // Compress and block until buffer is complete.
+  status_t compressSynchronous(Buffers *buffers);
+
+  status_t cancel();
+
+  bool isBusy();
+  bool isStreamInUse(uint32_t id);
+
+  bool waitForDone(nsecs_t timeout);
+
+  // Reserve the compressor for a later start() call.
+  status_t reserve();
+
+  // TODO: Measure this
+  static const size_t kMaxJpegSize = 300000;
+
+ private:
+  Mutex mBusyMutex;
+  bool mIsBusy;
+  Condition mDone;
+  bool mSynchronous;
+
+  Mutex mMutex;
+
+  Buffers *mBuffers;
+  JpegListener *mListener;
+
+  StreamBuffer mJpegBuffer, mAuxBuffer;
+  bool mFoundJpeg, mFoundAux;
+
+  jpeg_compress_struct mCInfo;
+
+  struct JpegError : public jpeg_error_mgr {
+    JpegCompressor *parent;
+  };
+  j_common_ptr mJpegErrorInfo;
+
+  struct JpegDestination : public jpeg_destination_mgr {
+    JpegCompressor *parent;
+  };
+
+  static void jpegErrorHandler(j_common_ptr cinfo);
+
+  static void jpegInitDestination(j_compress_ptr cinfo);
+  static boolean jpegEmptyOutputBuffer(j_compress_ptr cinfo);
+  static void jpegTermDestination(j_compress_ptr cinfo);
+
+  bool checkError(const char *msg);
+  status_t compress();
+
+  void cleanUp();
+
+  /**
+   * Inherited Thread virtual overrides
+   */
+ private:
+  virtual status_t readyToRun();
+  virtual bool threadLoop();
+};
+
+}  // namespace android
+
+#endif