Merge "Use sp<AudioTrack> instead of raw AudioTrack *"

    /* Terminates the AudioTrack and unregisters it from AudioFlinger.

     * Also destroys all resources associated with the AudioTrack.

     */

                        ~AudioTrack();

protected:

                        virtual ~AudioTrack();

public:

    /* Initialize an uninitialized AudioTrack.

     * Returned status (from utils/Errors.h) can be:

    EAS_DATA_HANDLE     mEasData;

    EAS_FILE_LOCATOR    mEasJetFileLoc;

    EAS_PCM*            mAudioBuffer;// EAS renders the MIDI data into this buffer,

    AudioTrack*         mAudioTrack; // and we play it in this audio track

    sp<AudioTrack>      mAudioTrack; // and we play it in this audio track

    int                 mTrackBufferSize;

    S_JET_STATUS        mJetStatus;

    S_JET_STATUS        mPreviousJetStatus;

class SoundChannel : public SoundEvent {

public:

    enum state { IDLE, RESUMING, STOPPING, PAUSED, PLAYING };

    SoundChannel() : mAudioTrack(NULL), mState(IDLE), mNumChannels(1),

    SoundChannel() : mState(IDLE), mNumChannels(1),

            mPos(0), mToggle(0), mAutoPaused(false) {}

    ~SoundChannel();

    void init(SoundPool* soundPool);

    bool doStop_l();

    SoundPool*          mSoundPool;

    AudioTrack*         mAudioTrack;

    sp<AudioTrack>      mAudioTrack;

    SoundEvent          mNextEvent;

    Mutex               mLock;

    int                 mState;

    bool isInited() { return (mState == TONE_IDLE)?false:true;}

    // returns the audio session this ToneGenerator belongs to or 0 if an error occured.

    int getSessionId() { return (mpAudioTrack == NULL) ? 0 : mpAudioTrack->getSessionId(); }

    int getSessionId() { return (mpAudioTrack == 0) ? 0 : mpAudioTrack->getSessionId(); }

private:

    unsigned short mLoopCounter; // Current tone loopback count

    uint32_t mSamplingRate;  // AudioFlinger Sampling rate

    AudioTrack *mpAudioTrack;  // Pointer to audio track used for playback

    sp<AudioTrack> mpAudioTrack;  // Pointer to audio track used for playback

    Mutex mLock;  // Mutex to control concurent access to ToneGenerator object from audio callback and application API

    Mutex mCbkCondLock; // Mutex associated to mWaitCbkCond

    Condition mWaitCbkCond; // condition enabling interface to wait for audio callback completion after a change is requested

private:

    friend class VideoEditorAudioPlayer;

    sp<MediaSource> mSource;

    AudioTrack *mAudioTrack;

    sp<AudioTrack> mAudioTrack;

    MediaBuffer *mInputBuffer;