diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
new file mode 100644
index 0000000..507c9ac
--- /dev/null
+++ b/services/audioflinger/AudioFlinger.h
@@ -0,0 +1,1148 @@
+/* //device/include/server/AudioFlinger/AudioFlinger.h
+**
+** Copyright 2007, 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_AUDIO_FLINGER_H
+#define ANDROID_AUDIO_FLINGER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <limits.h>
+
+#include <media/IAudioFlinger.h>
+#include <media/IAudioFlingerClient.h>
+#include <media/IAudioTrack.h>
+#include <media/IAudioRecord.h>
+#include <media/AudioTrack.h>
+
+#include <utils/Atomic.h>
+#include <utils/Errors.h>
+#include <utils/threads.h>
+#include <binder/MemoryDealer.h>
+#include <utils/SortedVector.h>
+#include <utils/Vector.h>
+
+#include <hardware_legacy/AudioHardwareInterface.h>
+
+#include "AudioBufferProvider.h"
+
+namespace android {
+
+class audio_track_cblk_t;
+class effect_param_cblk_t;
+class AudioMixer;
+class AudioBuffer;
+class AudioResampler;
+
+
+// ----------------------------------------------------------------------------
+
+#define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
+#define UNLIKELY( exp )     (__builtin_expect( (exp) != 0, false ))
+
+
+// ----------------------------------------------------------------------------
+
+static const nsecs_t kStandbyTimeInNsecs = seconds(3);
+
+class AudioFlinger : public BnAudioFlinger
+{
+public:
+    static void instantiate();
+
+    virtual     status_t    dump(int fd, const Vector<String16>& args);
+
+    // IAudioFlinger interface
+    virtual sp<IAudioTrack> createTrack(
+                                pid_t pid,
+                                int streamType,
+                                uint32_t sampleRate,
+                                int format,
+                                int channelCount,
+                                int frameCount,
+                                uint32_t flags,
+                                const sp<IMemory>& sharedBuffer,
+                                int output,
+                                int *sessionId,
+                                status_t *status);
+
+    virtual     uint32_t    sampleRate(int output) const;
+    virtual     int         channelCount(int output) const;
+    virtual     int         format(int output) const;
+    virtual     size_t      frameCount(int output) const;
+    virtual     uint32_t    latency(int output) const;
+
+    virtual     status_t    setMasterVolume(float value);
+    virtual     status_t    setMasterMute(bool muted);
+
+    virtual     float       masterVolume() const;
+    virtual     bool        masterMute() const;
+
+    virtual     status_t    setStreamVolume(int stream, float value, int output);
+    virtual     status_t    setStreamMute(int stream, bool muted);
+
+    virtual     float       streamVolume(int stream, int output) const;
+    virtual     bool        streamMute(int stream) const;
+
+    virtual     status_t    setMode(int mode);
+
+    virtual     status_t    setMicMute(bool state);
+    virtual     bool        getMicMute() const;
+
+    virtual     bool        isStreamActive(int stream) const;
+
+    virtual     status_t    setParameters(int ioHandle, const String8& keyValuePairs);
+    virtual     String8     getParameters(int ioHandle, const String8& keys);
+
+    virtual     void        registerClient(const sp<IAudioFlingerClient>& client);
+
+    virtual     size_t      getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
+    virtual     unsigned int  getInputFramesLost(int ioHandle);
+
+    virtual int openOutput(uint32_t *pDevices,
+                                    uint32_t *pSamplingRate,
+                                    uint32_t *pFormat,
+                                    uint32_t *pChannels,
+                                    uint32_t *pLatencyMs,
+                                    uint32_t flags);
+
+    virtual int openDuplicateOutput(int output1, int output2);
+
+    virtual status_t closeOutput(int output);
+
+    virtual status_t suspendOutput(int output);
+
+    virtual status_t restoreOutput(int output);
+
+    virtual int openInput(uint32_t *pDevices,
+                            uint32_t *pSamplingRate,
+                            uint32_t *pFormat,
+                            uint32_t *pChannels,
+                            uint32_t acoustics);
+
+    virtual status_t closeInput(int input);
+
+    virtual status_t setStreamOutput(uint32_t stream, int output);
+
+    virtual status_t setVoiceVolume(float volume);
+
+    virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output);
+
+    virtual int newAudioSessionId();
+
+    virtual status_t loadEffectLibrary(const char *libPath, int *handle);
+
+    virtual status_t unloadEffectLibrary(int handle);
+
+    virtual status_t queryNumberEffects(uint32_t *numEffects);
+
+    virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor);
+
+    virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor);
+
+    virtual sp<IEffect> createEffect(pid_t pid,
+                        effect_descriptor_t *pDesc,
+                        const sp<IEffectClient>& effectClient,
+                        int32_t priority,
+                        int output,
+                        int sessionId,
+                        status_t *status,
+                        int *id,
+                        int *enabled);
+
+            status_t registerEffectResource_l(effect_descriptor_t *desc);
+            void     unregisterEffectResource_l(effect_descriptor_t *desc);
+
+    enum hardware_call_state {
+        AUDIO_HW_IDLE = 0,
+        AUDIO_HW_INIT,
+        AUDIO_HW_OUTPUT_OPEN,
+        AUDIO_HW_OUTPUT_CLOSE,
+        AUDIO_HW_INPUT_OPEN,
+        AUDIO_HW_INPUT_CLOSE,
+        AUDIO_HW_STANDBY,
+        AUDIO_HW_SET_MASTER_VOLUME,
+        AUDIO_HW_GET_ROUTING,
+        AUDIO_HW_SET_ROUTING,
+        AUDIO_HW_GET_MODE,
+        AUDIO_HW_SET_MODE,
+        AUDIO_HW_GET_MIC_MUTE,
+        AUDIO_HW_SET_MIC_MUTE,
+        AUDIO_SET_VOICE_VOLUME,
+        AUDIO_SET_PARAMETER,
+    };
+
+    // record interface
+    virtual sp<IAudioRecord> openRecord(
+                                pid_t pid,
+                                int input,
+                                uint32_t sampleRate,
+                                int format,
+                                int channelCount,
+                                int frameCount,
+                                uint32_t flags,
+                                int *sessionId,
+                                status_t *status);
+
+    virtual     status_t    onTransact(
+                                uint32_t code,
+                                const Parcel& data,
+                                Parcel* reply,
+                                uint32_t flags);
+
+                uint32_t    getMode() { return mMode; }
+
+private:
+                            AudioFlinger();
+    virtual                 ~AudioFlinger();
+
+
+    // Internal dump utilites.
+    status_t dumpPermissionDenial(int fd, const Vector<String16>& args);
+    status_t dumpClients(int fd, const Vector<String16>& args);
+    status_t dumpInternals(int fd, const Vector<String16>& args);
+
+    // --- Client ---
+    class Client : public RefBase {
+    public:
+                            Client(const sp<AudioFlinger>& audioFlinger, pid_t pid);
+        virtual             ~Client();
+        const sp<MemoryDealer>&     heap() const;
+        pid_t               pid() const { return mPid; }
+        sp<AudioFlinger>    audioFlinger() { return mAudioFlinger; }
+
+    private:
+                            Client(const Client&);
+                            Client& operator = (const Client&);
+        sp<AudioFlinger>    mAudioFlinger;
+        sp<MemoryDealer>    mMemoryDealer;
+        pid_t               mPid;
+    };
+
+    // --- Notification Client ---
+    class NotificationClient : public IBinder::DeathRecipient {
+    public:
+                            NotificationClient(const sp<AudioFlinger>& audioFlinger,
+                                                const sp<IAudioFlingerClient>& client,
+                                                pid_t pid);
+        virtual             ~NotificationClient();
+
+                sp<IAudioFlingerClient>    client() { return mClient; }
+
+                // IBinder::DeathRecipient
+                virtual     void        binderDied(const wp<IBinder>& who);
+
+    private:
+                            NotificationClient(const NotificationClient&);
+                            NotificationClient& operator = (const NotificationClient&);
+
+        sp<AudioFlinger>        mAudioFlinger;
+        pid_t                   mPid;
+        sp<IAudioFlingerClient> mClient;
+    };
+
+    class TrackHandle;
+    class RecordHandle;
+    class RecordThread;
+    class PlaybackThread;
+    class MixerThread;
+    class DirectOutputThread;
+    class DuplicatingThread;
+    class Track;
+    class RecordTrack;
+    class EffectModule;
+    class EffectHandle;
+    class EffectChain;
+
+    class ThreadBase : public Thread {
+    public:
+        ThreadBase (const sp<AudioFlinger>& audioFlinger, int id);
+        virtual             ~ThreadBase();
+
+        status_t dumpBase(int fd, const Vector<String16>& args);
+
+        // base for record and playback
+        class TrackBase : public AudioBufferProvider, public RefBase {
+
+        public:
+            enum track_state {
+                IDLE,
+                TERMINATED,
+                STOPPED,
+                RESUMING,
+                ACTIVE,
+                PAUSING,
+                PAUSED
+            };
+
+            enum track_flags {
+                STEPSERVER_FAILED = 0x01, //  StepServer could not acquire cblk->lock mutex
+                SYSTEM_FLAGS_MASK = 0x0000ffffUL,
+                // The upper 16 bits are used for track-specific flags.
+            };
+
+                                TrackBase(const wp<ThreadBase>& thread,
+                                        const sp<Client>& client,
+                                        uint32_t sampleRate,
+                                        int format,
+                                        int channelCount,
+                                        int frameCount,
+                                        uint32_t flags,
+                                        const sp<IMemory>& sharedBuffer,
+                                        int sessionId);
+                                ~TrackBase();
+
+            virtual status_t    start() = 0;
+            virtual void        stop() = 0;
+                    sp<IMemory> getCblk() const;
+                    audio_track_cblk_t* cblk() const { return mCblk; }
+                    int         sessionId() { return mSessionId; }
+
+        protected:
+            friend class ThreadBase;
+            friend class RecordHandle;
+            friend class PlaybackThread;
+            friend class RecordThread;
+            friend class MixerThread;
+            friend class DirectOutputThread;
+
+                                TrackBase(const TrackBase&);
+                                TrackBase& operator = (const TrackBase&);
+
+            virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0;
+            virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
+
+            int format() const {
+                return mFormat;
+            }
+
+            int channelCount() const ;
+
+            int sampleRate() const;
+
+            void* getBuffer(uint32_t offset, uint32_t frames) const;
+
+            bool isStopped() const {
+                return mState == STOPPED;
+            }
+
+            bool isTerminated() const {
+                return mState == TERMINATED;
+            }
+
+            bool step();
+            void reset();
+
+            wp<ThreadBase>      mThread;
+            sp<Client>          mClient;
+            sp<IMemory>         mCblkMemory;
+            audio_track_cblk_t* mCblk;
+            void*               mBuffer;
+            void*               mBufferEnd;
+            uint32_t            mFrameCount;
+            // we don't really need a lock for these
+            int                 mState;
+            int                 mClientTid;
+            uint8_t             mFormat;
+            uint32_t            mFlags;
+            int                 mSessionId;
+        };
+
+        class ConfigEvent {
+        public:
+            ConfigEvent() : mEvent(0), mParam(0) {}
+
+            int mEvent;
+            int mParam;
+        };
+
+                    uint32_t    sampleRate() const;
+                    int         channelCount() const;
+                    int         format() const;
+                    size_t      frameCount() const;
+                    void        wakeUp()    { mWaitWorkCV.broadcast(); }
+                    void        exit();
+        virtual     bool        checkForNewParameters_l() = 0;
+        virtual     status_t    setParameters(const String8& keyValuePairs);
+        virtual     String8     getParameters(const String8& keys) = 0;
+        virtual     void        audioConfigChanged_l(int event, int param = 0) = 0;
+                    void        sendConfigEvent(int event, int param = 0);
+                    void        sendConfigEvent_l(int event, int param = 0);
+                    void        processConfigEvents();
+                    int         id() const { return mId;}
+                    bool        standby() { return mStandby; }
+
+        mutable     Mutex                   mLock;
+
+    protected:
+
+        friend class Track;
+        friend class TrackBase;
+        friend class PlaybackThread;
+        friend class MixerThread;
+        friend class DirectOutputThread;
+        friend class DuplicatingThread;
+        friend class RecordThread;
+        friend class RecordTrack;
+
+                    Condition               mWaitWorkCV;
+                    sp<AudioFlinger>        mAudioFlinger;
+                    uint32_t                mSampleRate;
+                    size_t                  mFrameCount;
+                    uint32_t                mChannels;
+                    uint16_t                mChannelCount;
+                    uint16_t                mFrameSize;
+                    int                     mFormat;
+                    Condition               mParamCond;
+                    Vector<String8>         mNewParameters;
+                    status_t                mParamStatus;
+                    Vector<ConfigEvent *>   mConfigEvents;
+                    bool                    mStandby;
+                    int                     mId;
+                    bool                    mExiting;
+    };
+
+    // --- PlaybackThread ---
+    class PlaybackThread : public ThreadBase {
+    public:
+
+        enum type {
+            MIXER,
+            DIRECT,
+            DUPLICATING
+        };
+
+        enum mixer_state {
+            MIXER_IDLE,
+            MIXER_TRACKS_ENABLED,
+            MIXER_TRACKS_READY
+        };
+
+        // playback track
+        class Track : public TrackBase {
+        public:
+                                Track(  const wp<ThreadBase>& thread,
+                                        const sp<Client>& client,
+                                        int streamType,
+                                        uint32_t sampleRate,
+                                        int format,
+                                        int channelCount,
+                                        int frameCount,
+                                        const sp<IMemory>& sharedBuffer,
+                                        int sessionId);
+                                ~Track();
+
+                    void        dump(char* buffer, size_t size);
+            virtual status_t    start();
+            virtual void        stop();
+                    void        pause();
+
+                    void        flush();
+                    void        destroy();
+                    void        mute(bool);
+                    void        setVolume(float left, float right);
+                    int name() const {
+                        return mName;
+                    }
+
+                    int type() const {
+                        return mStreamType;
+                    }
+                    status_t    attachAuxEffect(int EffectId);
+                    void        setAuxBuffer(int EffectId, int32_t *buffer);
+                    int32_t     *auxBuffer() { return mAuxBuffer; }
+                    void        setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; }
+                    int16_t     *mainBuffer() { return mMainBuffer; }
+                    int         auxEffectId() { return mAuxEffectId; }
+
+
+        protected:
+            friend class ThreadBase;
+            friend class AudioFlinger;
+            friend class TrackHandle;
+            friend class PlaybackThread;
+            friend class MixerThread;
+            friend class DirectOutputThread;
+
+                                Track(const Track&);
+                                Track& operator = (const Track&);
+
+            virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
+            bool isMuted() { return mMute; }
+            bool isPausing() const {
+                return mState == PAUSING;
+            }
+            bool isPaused() const {
+                return mState == PAUSED;
+            }
+            bool isReady() const;
+            void setPaused() { mState = PAUSED; }
+            void reset();
+
+            bool isOutputTrack() const {
+                return (mStreamType == AudioSystem::NUM_STREAM_TYPES);
+            }
+
+            // we don't really need a lock for these
+            float               mVolume[2];
+            volatile bool       mMute;
+            // FILLED state is used for suppressing volume ramp at begin of playing
+            enum {FS_FILLING, FS_FILLED, FS_ACTIVE};
+            mutable uint8_t     mFillingUpStatus;
+            int8_t              mRetryCount;
+            sp<IMemory>         mSharedBuffer;
+            bool                mResetDone;
+            int                 mStreamType;
+            int                 mName;
+            int16_t             *mMainBuffer;
+            int32_t             *mAuxBuffer;
+            int                 mAuxEffectId;
+        };  // end of Track
+
+
+        // playback track
+        class OutputTrack : public Track {
+        public:
+
+            class Buffer: public AudioBufferProvider::Buffer {
+            public:
+                int16_t *mBuffer;
+            };
+
+                                OutputTrack(  const wp<ThreadBase>& thread,
+                                        DuplicatingThread *sourceThread,
+                                        uint32_t sampleRate,
+                                        int format,
+                                        int channelCount,
+                                        int frameCount);
+                                ~OutputTrack();
+
+            virtual status_t    start();
+            virtual void        stop();
+                    bool        write(int16_t* data, uint32_t frames);
+                    bool        bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; }
+                    bool        isActive() { return mActive; }
+            wp<ThreadBase>&     thread()  { return mThread; }
+
+        private:
+
+            status_t            obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs);
+            void                clearBufferQueue();
+
+            // Maximum number of pending buffers allocated by OutputTrack::write()
+            static const uint8_t kMaxOverFlowBuffers = 10;
+
+            Vector < Buffer* >          mBufferQueue;
+            AudioBufferProvider::Buffer mOutBuffer;
+            bool                        mActive;
+            DuplicatingThread*          mSourceThread;
+        };  // end of OutputTrack
+
+        PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device);
+        virtual             ~PlaybackThread();
+
+        virtual     status_t    dump(int fd, const Vector<String16>& args);
+
+        // Thread virtuals
+        virtual     status_t    readyToRun();
+        virtual     void        onFirstRef();
+
+        virtual     uint32_t    latency() const;
+
+        virtual     status_t    setMasterVolume(float value);
+        virtual     status_t    setMasterMute(bool muted);
+
+        virtual     float       masterVolume() const;
+        virtual     bool        masterMute() const;
+
+        virtual     status_t    setStreamVolume(int stream, float value);
+        virtual     status_t    setStreamMute(int stream, bool muted);
+
+        virtual     float       streamVolume(int stream) const;
+        virtual     bool        streamMute(int stream) const;
+
+                    bool        isStreamActive(int stream) const;
+
+                    sp<Track>   createTrack_l(
+                                    const sp<AudioFlinger::Client>& client,
+                                    int streamType,
+                                    uint32_t sampleRate,
+                                    int format,
+                                    int channelCount,
+                                    int frameCount,
+                                    const sp<IMemory>& sharedBuffer,
+                                    int sessionId,
+                                    status_t *status);
+
+                    AudioStreamOut* getOutput() { return mOutput; }
+
+        virtual     int         type() const { return mType; }
+                    void        suspend() { mSuspended++; }
+                    void        restore() { if (mSuspended) mSuspended--; }
+                    bool        isSuspended() { return (mSuspended != 0); }
+        virtual     String8     getParameters(const String8& keys);
+        virtual     void        audioConfigChanged_l(int event, int param = 0);
+        virtual     status_t    getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames);
+                    int16_t     *mixBuffer() { return mMixBuffer; };
+
+                    sp<EffectHandle> createEffect_l(
+                                        const sp<AudioFlinger::Client>& client,
+                                        const sp<IEffectClient>& effectClient,
+                                        int32_t priority,
+                                        int sessionId,
+                                        effect_descriptor_t *desc,
+                                        int *enabled,
+                                        status_t *status);
+                    void disconnectEffect(const sp< EffectModule>& effect,
+                                          const wp<EffectHandle>& handle);
+
+                    bool hasAudioSession(int sessionId);
+                    sp<EffectChain> getEffectChain(int sessionId);
+                    sp<EffectChain> getEffectChain_l(int sessionId);
+                    status_t addEffectChain_l(const sp<EffectChain>& chain);
+                    size_t removeEffectChain_l(const sp<EffectChain>& chain);
+                    void lockEffectChains_l();
+                    void unlockEffectChains();
+
+                    sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId);
+                    void detachAuxEffect_l(int effectId);
+                    status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId);
+                    status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, int EffectId);
+                    void setMode(uint32_t mode);
+
+        struct  stream_type_t {
+            stream_type_t()
+                :   volume(1.0f),
+                    mute(false)
+            {
+            }
+            float       volume;
+            bool        mute;
+        };
+
+    protected:
+        int                             mType;
+        int16_t*                        mMixBuffer;
+        int                             mSuspended;
+        int                             mBytesWritten;
+        bool                            mMasterMute;
+        SortedVector< wp<Track> >       mActiveTracks;
+
+        virtual int             getTrackName_l() = 0;
+        virtual void            deleteTrackName_l(int name) = 0;
+        virtual uint32_t        activeSleepTimeUs() = 0;
+        virtual uint32_t        idleSleepTimeUs() = 0;
+
+    private:
+
+        friend class AudioFlinger;
+        friend class OutputTrack;
+        friend class Track;
+        friend class TrackBase;
+        friend class MixerThread;
+        friend class DirectOutputThread;
+        friend class DuplicatingThread;
+
+        PlaybackThread(const Client&);
+        PlaybackThread& operator = (const PlaybackThread&);
+
+        status_t    addTrack_l(const sp<Track>& track);
+        void        destroyTrack_l(const sp<Track>& track);
+
+        void        readOutputParameters();
+
+        uint32_t    device() { return mDevice; }
+
+        virtual status_t    dumpInternals(int fd, const Vector<String16>& args);
+        status_t    dumpTracks(int fd, const Vector<String16>& args);
+        status_t    dumpEffectChains(int fd, const Vector<String16>& args);
+
+        SortedVector< sp<Track> >       mTracks;
+        // mStreamTypes[] uses 1 additionnal stream type internally for the OutputTrack used by DuplicatingThread
+        stream_type_t                   mStreamTypes[AudioSystem::NUM_STREAM_TYPES + 1];
+        AudioStreamOut*                 mOutput;
+        float                           mMasterVolume;
+        nsecs_t                         mLastWriteTime;
+        int                             mNumWrites;
+        int                             mNumDelayedWrites;
+        bool                            mInWrite;
+        Vector< sp<EffectChain> >       mEffectChains;
+        uint32_t                        mDevice;
+    };
+
+    class MixerThread : public PlaybackThread {
+    public:
+        MixerThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device);
+        virtual             ~MixerThread();
+
+        // Thread virtuals
+        virtual     bool        threadLoop();
+
+                    void        invalidateTracks(int streamType);
+        virtual     bool        checkForNewParameters_l();
+        virtual     status_t    dumpInternals(int fd, const Vector<String16>& args);
+
+    protected:
+                    uint32_t    prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, Vector< sp<Track> > *tracksToRemove);
+        virtual     int         getTrackName_l();
+        virtual     void        deleteTrackName_l(int name);
+        virtual     uint32_t    activeSleepTimeUs();
+        virtual     uint32_t    idleSleepTimeUs();
+
+        AudioMixer*                     mAudioMixer;
+    };
+
+    class DirectOutputThread : public PlaybackThread {
+    public:
+
+        DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device);
+        ~DirectOutputThread();
+
+        // Thread virtuals
+        virtual     bool        threadLoop();
+
+        virtual     bool        checkForNewParameters_l();
+
+    protected:
+        virtual     int         getTrackName_l();
+        virtual     void        deleteTrackName_l(int name);
+        virtual     uint32_t    activeSleepTimeUs();
+        virtual     uint32_t    idleSleepTimeUs();
+
+    private:
+        void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp);
+
+        float mLeftVolFloat;
+        float mRightVolFloat;
+        uint16_t mLeftVolShort;
+        uint16_t mRightVolShort;
+    };
+
+    class DuplicatingThread : public MixerThread {
+    public:
+        DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id);
+        ~DuplicatingThread();
+
+        // Thread virtuals
+        virtual     bool        threadLoop();
+                    void        addOutputTrack(MixerThread* thread);
+                    void        removeOutputTrack(MixerThread* thread);
+                    uint32_t    waitTimeMs() { return mWaitTimeMs; }
+    protected:
+        virtual     uint32_t    activeSleepTimeUs();
+
+    private:
+                    bool        outputsReady(SortedVector< sp<OutputTrack> > &outputTracks);
+                    void        updateWaitTime();
+
+        SortedVector < sp<OutputTrack> >  mOutputTracks;
+                    uint32_t    mWaitTimeMs;
+    };
+
+              PlaybackThread *checkPlaybackThread_l(int output) const;
+              MixerThread *checkMixerThread_l(int output) const;
+              RecordThread *checkRecordThread_l(int input) const;
+              float streamVolumeInternal(int stream) const { return mStreamTypes[stream].volume; }
+              void audioConfigChanged_l(int event, int ioHandle, void *param2);
+
+              int  nextUniqueId();
+
+    friend class AudioBuffer;
+
+    class TrackHandle : public android::BnAudioTrack {
+    public:
+                            TrackHandle(const sp<PlaybackThread::Track>& track);
+        virtual             ~TrackHandle();
+        virtual status_t    start();
+        virtual void        stop();
+        virtual void        flush();
+        virtual void        mute(bool);
+        virtual void        pause();
+        virtual void        setVolume(float left, float right);
+        virtual sp<IMemory> getCblk() const;
+        virtual status_t    attachAuxEffect(int effectId);
+        virtual status_t onTransact(
+            uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
+    private:
+        sp<PlaybackThread::Track> mTrack;
+    };
+
+    friend class Client;
+    friend class PlaybackThread::Track;
+
+
+                void        removeClient_l(pid_t pid);
+                void        removeNotificationClient(pid_t pid);
+
+
+    // record thread
+    class RecordThread : public ThreadBase, public AudioBufferProvider
+    {
+    public:
+
+        // record track
+        class RecordTrack : public TrackBase {
+        public:
+                                RecordTrack(const wp<ThreadBase>& thread,
+                                        const sp<Client>& client,
+                                        uint32_t sampleRate,
+                                        int format,
+                                        int channelCount,
+                                        int frameCount,
+                                        uint32_t flags,
+                                        int sessionId);
+                                ~RecordTrack();
+
+            virtual status_t    start();
+            virtual void        stop();
+
+                    bool        overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; }
+                    bool        setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; }
+
+                    void        dump(char* buffer, size_t size);
+        private:
+            friend class AudioFlinger;
+            friend class RecordThread;
+
+                                RecordTrack(const RecordTrack&);
+                                RecordTrack& operator = (const RecordTrack&);
+
+            virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
+
+            bool                mOverflow;
+        };
+
+
+                RecordThread(const sp<AudioFlinger>& audioFlinger,
+                        AudioStreamIn *input,
+                        uint32_t sampleRate,
+                        uint32_t channels,
+                        int id);
+                ~RecordThread();
+
+        virtual bool        threadLoop();
+        virtual status_t    readyToRun() { return NO_ERROR; }
+        virtual void        onFirstRef();
+
+                status_t    start(RecordTrack* recordTrack);
+                void        stop(RecordTrack* recordTrack);
+                status_t    dump(int fd, const Vector<String16>& args);
+                AudioStreamIn* getInput() { return mInput; }
+
+        virtual status_t    getNextBuffer(AudioBufferProvider::Buffer* buffer);
+        virtual void        releaseBuffer(AudioBufferProvider::Buffer* buffer);
+        virtual bool        checkForNewParameters_l();
+        virtual String8     getParameters(const String8& keys);
+        virtual void        audioConfigChanged_l(int event, int param = 0);
+                void        readInputParameters();
+        virtual unsigned int  getInputFramesLost();
+
+    private:
+                RecordThread();
+                AudioStreamIn                       *mInput;
+                sp<RecordTrack>                     mActiveTrack;
+                Condition                           mStartStopCond;
+                AudioResampler                      *mResampler;
+                int32_t                             *mRsmpOutBuffer;
+                int16_t                             *mRsmpInBuffer;
+                size_t                              mRsmpInIndex;
+                size_t                              mInputBytes;
+                int                                 mReqChannelCount;
+                uint32_t                            mReqSampleRate;
+                ssize_t                             mBytesRead;
+    };
+
+    class RecordHandle : public android::BnAudioRecord {
+    public:
+        RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack);
+        virtual             ~RecordHandle();
+        virtual status_t    start();
+        virtual void        stop();
+        virtual sp<IMemory> getCblk() const;
+        virtual status_t onTransact(
+            uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
+    private:
+        sp<RecordThread::RecordTrack> mRecordTrack;
+    };
+
+    //--- Audio Effect Management
+
+    // EffectModule and EffectChain classes both have their own mutex to protect
+    // state changes or resource modifications. Always respect the following order
+    // if multiple mutexes must be acquired to avoid cross deadlock:
+    // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule
+
+    // The EffectModule class is a wrapper object controlling the effect engine implementation
+    // in the effect library. It prevents concurrent calls to process() and command() functions
+    // from different client threads. It keeps a list of EffectHandle objects corresponding
+    // to all client applications using this effect and notifies applications of effect state,
+    // control or parameter changes. It manages the activation state machine to send appropriate
+    // reset, enable, disable commands to effect engine and provide volume
+    // ramping when effects are activated/deactivated.
+    // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by
+    // the attached track(s) to accumulate their auxiliary channel.
+    class EffectModule: public RefBase {
+    public:
+        EffectModule(const wp<ThreadBase>& wThread,
+                        const wp<AudioFlinger::EffectChain>& chain,
+                        effect_descriptor_t *desc,
+                        int id,
+                        int sessionId);
+        ~EffectModule();
+
+        enum effect_state {
+            IDLE,
+            RESTART,
+            STARTING,
+            ACTIVE,
+            STOPPING,
+            STOPPED
+        };
+
+        int         id() { return mId; }
+        void process();
+        void updateState();
+        status_t command(int cmdCode, int cmdSize, void *pCmdData, int *replySize, void *pReplyData);
+
+        void reset_l();
+        status_t configure();
+        status_t init();
+        uint32_t state() {
+            return mState;
+        }
+        uint32_t status() {
+            return mStatus;
+        }
+        status_t    setEnabled(bool enabled);
+        bool isEnabled();
+
+        void        setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; }
+        int16_t     *inBuffer() { return mConfig.inputCfg.buffer.s16; }
+        void        setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; }
+        int16_t     *outBuffer() { return mConfig.outputCfg.buffer.s16; }
+
+        status_t addHandle(sp<EffectHandle>& handle);
+        void disconnect(const wp<EffectHandle>& handle);
+        size_t removeHandle (const wp<EffectHandle>& handle);
+
+        effect_descriptor_t& desc() { return mDescriptor; }
+        wp<EffectChain>&     chain() { return mChain; }
+
+        status_t         setDevice(uint32_t device);
+        status_t         setVolume(uint32_t *left, uint32_t *right, bool controller);
+        status_t         setMode(uint32_t mode);
+
+        status_t         dump(int fd, const Vector<String16>& args);
+
+    protected:
+
+        // Maximum time allocated to effect engines to complete the turn off sequence
+        static const uint32_t MAX_DISABLE_TIME_MS = 10000;
+
+        EffectModule(const EffectModule&);
+        EffectModule& operator = (const EffectModule&);
+
+        status_t start_l();
+        status_t stop_l();
+
+        // update this table when AudioSystem::audio_devices or audio_device_e (in EffectApi.h) are modified
+        static const uint32_t sDeviceConvTable[];
+        static uint32_t deviceAudioSystemToEffectApi(uint32_t device);
+
+        // update this table when AudioSystem::audio_mode or audio_mode_e (in EffectApi.h) are modified
+        static const uint32_t sModeConvTable[];
+        static int modeAudioSystemToEffectApi(uint32_t mode);
+
+        Mutex               mLock;      // mutex for process, commands and handles list protection
+        wp<ThreadBase>      mThread;    // parent thread
+        wp<EffectChain>     mChain;     // parent effect chain
+        int                 mId;        // this instance unique ID
+        int                 mSessionId; // audio session ID
+        effect_descriptor_t mDescriptor;// effect descriptor received from effect engine
+        effect_config_t     mConfig;    // input and output audio configuration
+        effect_interface_t  mEffectInterface; // Effect module C API
+        status_t mStatus;               // initialization status
+        uint32_t mState;                // current activation state (effect_state)
+        Vector< wp<EffectHandle> > mHandles;    // list of client handles
+        uint32_t mMaxDisableWaitCnt;    // maximum grace period before forcing an effect off after
+                                        // sending disable command.
+        uint32_t mDisableWaitCnt;       // current process() calls count during disable period.
+    };
+
+    // The EffectHandle class implements the IEffect interface. It provides resources
+    // to receive parameter updates, keeps track of effect control
+    // ownership and state and has a pointer to the EffectModule object it is controlling.
+    // There is one EffectHandle object for each application controlling (or using)
+    // an effect module.
+    // The EffectHandle is obtained by calling AudioFlinger::createEffect().
+    class EffectHandle: public android::BnEffect {
+    public:
+
+        EffectHandle(const sp<EffectModule>& effect,
+                const sp<AudioFlinger::Client>& client,
+                const sp<IEffectClient>& effectClient,
+                int32_t priority);
+        virtual ~EffectHandle();
+
+        // IEffect
+        virtual status_t enable();
+        virtual status_t disable();
+        virtual status_t command(int cmdCode, int cmdSize, void *pCmdData, int *replySize, void *pReplyData);
+        virtual void disconnect();
+        virtual sp<IMemory> getCblk() const;
+        virtual status_t onTransact(uint32_t code, const Parcel& data,
+                Parcel* reply, uint32_t flags);
+
+
+        // Give or take control of effect module
+        void setControl(bool hasControl, bool signal);
+        void commandExecuted(int cmdCode, int cmdSize, void *pCmdData, int replySize, void *pReplyData);
+        void setEnabled(bool enabled);
+
+        // Getters
+        int id() { return mEffect->id(); }
+        int priority() { return mPriority; }
+        bool hasControl() { return mHasControl; }
+        sp<EffectModule> effect() { return mEffect; }
+
+        void dump(char* buffer, size_t size);
+
+    protected:
+
+        EffectHandle(const EffectHandle&);
+        EffectHandle& operator =(const EffectHandle&);
+
+        sp<EffectModule> mEffect;           // pointer to controlled EffectModule
+        sp<IEffectClient> mEffectClient;    // callback interface for client notifications
+        sp<Client>          mClient;        // client for shared memory allocation
+        sp<IMemory>         mCblkMemory;    // shared memory for control block
+        effect_param_cblk_t* mCblk;         // control block for deferred parameter setting via shared memory
+        uint8_t*            mBuffer;        // pointer to parameter area in shared memory
+        int mPriority;                      // client application priority to control the effect
+        bool mHasControl;                   // true if this handle is controlling the effect
+    };
+
+    // the EffectChain class represents a group of effects associated to one audio session.
+    // There can be any number of EffectChain objects per output mixer thread (PlaybackThread).
+    // The EffecChain with session ID 0 contains global effects applied to the output mix.
+    // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks)
+    // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding
+    // in the effect process order. When attached to a track (session ID != 0), it also provide it's own
+    // input buffer used by the track as accumulation buffer.
+    class EffectChain: public RefBase {
+    public:
+        EffectChain(const wp<ThreadBase>& wThread, int sessionId);
+        ~EffectChain();
+
+        void process_l();
+
+        void lock() {
+            mLock.lock();
+        }
+        void unlock() {
+            mLock.unlock();
+        }
+
+        status_t addEffect(sp<EffectModule>& handle);
+        size_t removeEffect(const sp<EffectModule>& handle);
+
+        int sessionId() {
+            return mSessionId;
+        }
+        sp<EffectModule> getEffectFromDesc(effect_descriptor_t *descriptor);
+        sp<EffectModule> getEffectFromId(int id);
+        sp<EffectModule> getVolumeController();
+        bool setVolume(uint32_t *left, uint32_t *right);
+        void setDevice(uint32_t device);
+        void setMode(uint32_t mode);
+
+
+        void setInBuffer(int16_t *buffer, bool ownsBuffer = false) {
+            mInBuffer = buffer;
+            mOwnInBuffer = ownsBuffer;
+        }
+        int16_t *inBuffer() {
+            return mInBuffer;
+        }
+        void setOutBuffer(int16_t *buffer) {
+            mOutBuffer = buffer;
+        }
+        int16_t *outBuffer() {
+            return mOutBuffer;
+        }
+
+        void startTrack() {mActiveTrackCnt++;}
+        void stopTrack() {mActiveTrackCnt--;}
+        int activeTracks() { return mActiveTrackCnt;}
+
+        status_t dump(int fd, const Vector<String16>& args);
+
+    protected:
+
+        EffectChain(const EffectChain&);
+        EffectChain& operator =(const EffectChain&);
+
+        wp<ThreadBase> mThread;     // parent mixer thread
+        Mutex mLock;                // mutex protecting effect list
+        Vector<sp<EffectModule> > mEffects; // list of effect modules
+        int mSessionId;             // audio session ID
+        int16_t *mInBuffer;         // chain input buffer
+        int16_t *mOutBuffer;        // chain output buffer
+        int mVolumeCtrlIdx;         // index of insert effect having control over volume
+        int mActiveTrackCnt;        // number of active tracks connected
+        bool mOwnInBuffer;          // true if the chain owns its input buffer
+    };
+
+    friend class RecordThread;
+    friend class PlaybackThread;
+
+
+    mutable     Mutex                               mLock;
+
+                DefaultKeyedVector< pid_t, wp<Client> >     mClients;
+
+                mutable     Mutex                   mHardwareLock;
+                AudioHardwareInterface*             mAudioHardware;
+    mutable     int                                 mHardwareStatus;
+
+
+                DefaultKeyedVector< int, sp<PlaybackThread> >  mPlaybackThreads;
+                PlaybackThread::stream_type_t       mStreamTypes[AudioSystem::NUM_STREAM_TYPES];
+                float                               mMasterVolume;
+                bool                                mMasterMute;
+
+                DefaultKeyedVector< int, sp<RecordThread> >    mRecordThreads;
+
+                DefaultKeyedVector< pid_t, sp<NotificationClient> >    mNotificationClients;
+                volatile int32_t                    mNextUniqueId;
+#ifdef LVMX
+                int mLifeVibesClientPid;
+#endif
+                uint32_t mMode;
+
+                // Maximum CPU load allocated to audio effects in 0.1 MIPS (ARMv5TE, 0 WS memory) units
+                static const uint32_t MAX_EFFECTS_CPU_LOAD = 1000;
+                // Maximum memory allocated to audio effects in KB
+                static const uint32_t MAX_EFFECTS_MEMORY = 512;
+                uint32_t mTotalEffectsCpuLoad; // current CPU load used by effects
+                uint32_t mTotalEffectsMemory;  // current memory used by effects
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_AUDIO_FLINGER_H