Revert "Allow invoke in all the player states except idle and error."

status_t MediaPlayer::invoke(const Parcel& request, Parcel *reply)

{

    Mutex::Autolock _l(mLock);

    const bool hasBeenInitialized =

            (mCurrentState != MEDIA_PLAYER_STATE_ERROR) &&

            ((mCurrentState & MEDIA_PLAYER_IDLE) != MEDIA_PLAYER_STATE_IDLE);

    if ((mPlayer != NULL) && hasBeenInitialized) {

    if ((mPlayer != NULL) && ( mCurrentState & MEDIA_PLAYER_INITIALIZED ))

    {

         LOGV("invoke %d", request.dataSize());

         return  mPlayer->invoke(request, reply);

    }