class AliFMDRawReader: public TTask

 fSampleRate(1),
 Default CTOR

 Read the data

 Process a new DDL.  Sets the internal data members fZeroSuppress,
 fSampleRate, and fNoiseFactor based on information in the RCU trailer.

 Parameters:
   input Input stream
   det   On return, the detector number

 Return value:
   negative value in case of problems, the DDL number otherwise

 Processs a new channel.  Sets the internal data members
 fMinStrip, fMaxStrip, and fPreSamp.

 Parameter:
   input   Input stream
   ring    On return, the ring identifier
   sec     On return, the sector number
   strbase On return, the strip base

 Return value
   negative value in case of problems, hardware address otherwise

 Do some checks on the bunch data

 Process a new timebin

 Parameters:
   input   Input stream
   i       Index into bunch data
   t       Time
   strbase Base of strip numbers for this channel
   str     On return, the strip number
   samp    On return, the sample number

 Return value
   negative value in case of problems, ADC value otherwise

 Scan current event for next signal.   It returns kFALSE when
 there's no more data in the event.

 Note, that this member function is in principle very fast, but
 contains less error checking.  In particular, channels that have
 bad bunches cannot be checked here.  Seeing a bad bunch will only
 skip the remainder of the channel and not reset the already read
 digits.   This is potentially dangerous.

 Parameters:
    det         On return, contain the detector number
    rng         On return, contain the ring identifier
    sec         On return, contain the sector number
    str         On return, contain the strip number
    sam         On return, contain the sample number
    rat         On return, contain the sample rate
    adc         On return, contain the ADC counts
    zs          On return, contain the zero-supp. flag
    fac         On return, contain the zero-supp. noise factor

 Return values:
    0    No more data
    -1   Read sample belongs to a bad bunch
    >0   Good status - contains bit mask of values
       Bit 1    New DDL
       Bit 2    New Channel
       Bit 3    New Bunch
       Bit 4    New Sample

 Get the next signal

 Parameters:
    det  On return, the detector
    rng  On return, the ring
    sec  On return, the sector
    str  On return, the strip
    adc  On return, the ADC value
    zs   On return, whether zero-supp. is enabled
    fac  On return, the usd noise factor

 Return:
    true if valid data is returned

 Check if the passed sample is the one we need

 Read ADC values from raw input into passed TClonesArray of AliFMDDigit
 objects.

 Read ADC values from raw input into passed TClonesArray of AliFMDDigit
 objects.

 Read SOD event into passed objects.

 Parameters:
    samplerate   The sample rate object to fill
    striprange   The strip range object to fill
    pulseSize    The pulse size object to fill
    pulseLength  The pulse length (in events) object to fill

 Return:
    @c true on success

 This method returns the 32 bit word at a given
 position inside the raw data payload.
 The 'index' points to the beginning of the next word.
 The method is supposed to be endian (platform)
 independent.

 Get short index for a given half-ring

 Parameters:
    det   Detector number
    ring  Ring identifer
    board Board number

 Return:

   * CTOR
   *
   * @param reader Raw reader
   * @param array  Output tree

   * DTOR

   * Read in, and store in output tree
   *
   * @param option Not used

   * Check of the data from DDL @a ddl is zero-suppressed
   *
   * @param ddl DDL number (0-2)
   *
   * @return @c true if the data from this DDL is zero-suppressed.

   * The factor used to multiply the noise when making on-line
   * pedestal subtraction.
   *
   * @param ddl DDL number (0-2)
   *
   * @return The factor used.

   * Get number of read-out errors.  Note, that a channel marked as
   * bad counts as 10 errors
   *
   * @param ddl DDL off set ([0,kNDDL-1])
   *
   * @return Number of seen errors

   * Get the phase of the L1 signal
   *
   * @param ddl DDL number ([0,kNDDL-1])
   *
   * @return Phase of the L1 signal in steps of 25ns.

   * Assignment operator
   *
   * @return Reference to this object

   *
   * Get the number of words
   *
   * @return Number of 32bit words