[u/mrichter/AliRoot.git] / FMD / AliFMDRawWriter.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/
/* $Id$ */
/** @file    AliFMDRawWriter.cxx
    @author  Christian Holm Christensen <cholm@nbi.dk>
    @date    Mon Mar 27 12:45:56 2006
    @brief   Class to write raw data 
*/
//____________________________________________________________________
//
// Class to write ADC values to a raw data file
//
// This class writes FMD Raw data to a file.   The sample rate (number
// of times the ALTRO ADC samples each pre-amp. channel - that is,
// data from a single strip), can be set via SetSampleRate. 
//
// Zero-suppression can be enabled by calling SetThreshold with a
// non-zero argument.   ADC values less than the value set will not be
// written to output.   Note, that if you use zero-suppression, you
// need to explicitly set the sample rate when reading back the data
// with AliFMDRawReader. 
// 
// This class uses the AliAltroBuffer class to write the data in the
// ALTRO format.  See the Exec member function for more information on
// that format.  
//
#include <AliLog.h>		// ALILOG_H
#include <AliLoader.h>		// ALILOADER_H
#include <AliAltroBuffer.h>     // ALIALTROBUFFER_H
#include "AliFMD.h"		// ALIFMD_H
#include "AliFMDParameters.h"	// ALIFMDPARAMETERS_H
#include "AliFMDDigit.h"	// ALIFMDDIGIT_H
#include "AliFMDRawWriter.h"	// ALIFMDRAWREADER_H 
#include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H
// #include "AliFMDAltroIO.h"   // ALIFMDALTROWRITER_H
#include <TArrayI.h>		// ROOT_TArrayI
#include <TClonesArray.h>	// ROOT_TClonesArray
// #include <fstream>

//____________________________________________________________________
ClassImp(AliFMDRawWriter)
#if 0
  ; // This is here to keep Emacs for indenting the next line
#endif

//____________________________________________________________________
AliFMDRawWriter::AliFMDRawWriter(AliFMD* fmd) 
  : TTask("FMDRawWriter", "Writer of Raw ADC values from the FMD"),
    fFMD(fmd)
{
  // CTOR 
}


//____________________________________________________________________
void
AliFMDRawWriter::Exec(Option_t*) 
{
  // Turn digits into raw data. 
  // 
  // Digits are read from the Digit branch, and processed to make
  // three DDL files, one for each of the sub-detectors FMD1, FMD2,
  // and FMD3. 
  //
  // The raw data files consists of a header, followed by ALTRO
  // formatted blocks.  
  // 
  //          +-------------+
  //          | Header      |
  //          +-------------+
  //          | ALTRO Block |
  //          | ...         |
  //          +-------------+
  //          DDL file 
  // 
  // An ALTRO formatted block, in the FMD context, consists of a
  // number of counts followed by a trailer. 
  // 
  //          +------------------+
  //          | Count            |
  //          | ...              |
  //          | possible fillers |
  //          +------------------+
  //          | Trailer          |
  //          +------------------+
  //          ALTRO block 
  // 
  // The counts are listed backwards, that is, starting with the
  // latest count, and ending in the first. 
  // 
  // Each count consist of 1 or more ADC samples of the VA1_ALICE
  // pre-amp. signal.  Just how many samples are used depends on
  // whether the ALTRO over samples the pre-amp.  Each sample is a
  // 10-bit word, and the samples are grouped into 40-bit blocks 
  //
  //          +------------------------------------+
  //          |  S(1)   | S(2)   | S(3)   | S(4)   |
  //          |  ...    | ...    | ...    | ...    |
  //          |  S(n)   | T(n)   | n+2    | 2AA    |
  //          +------------------------------------+
  //          Counts + possible filler 
  //
  // The trailer of the number of words of signales, the starting
  // strip number, the sector number, and the ring ID; each 10-bit
  // words,  packed into 40-bits. 
  // 
  //          +------------------------------------+
  //          |   2AAA   |  Len   |  A |  Address  |
  //          +------------------------------------+
  //          Trailer
  // 
  // Note, that this method assumes that the digits are ordered. 
  // 
  AliLoader* loader = fFMD->GetLoader();
  loader->LoadDigits();
  TTree* digitTree = loader->TreeD();
  if (!digitTree) {
    Error("Digits2Raw", "no digit tree");
    return;
  }
  
  TClonesArray* digits = new TClonesArray("AliFMDDigit", 1000);
  fFMD->SetTreeAddress();
  TBranch* digitBranch = digitTree->GetBranch(fFMD->GetName());
  if (!digitBranch) {
    Error("Digits2Raw", "no branch for %s", fFMD->GetName());
    return;
  }
  digitBranch->SetAddress(&digits);
  
  Int_t nEvents = Int_t(digitTree->GetEntries());
  for (Int_t event = 0; event < nEvents; event++) {
    fFMD->ResetDigits();
    digitTree->GetEvent(event);
    
    // Write out the digits
    WriteDigits(digits);
  }
  loader->UnloadDigits();
}

#if 1
//____________________________________________________________________
void
AliFMDRawWriter::WriteDigits(TClonesArray* digits)
{
  // WRite an array of digits to disk file 
  Int_t nDigits = digits->GetEntries();
  if (nDigits < 1) return;

  AliFMDParameters* pars = AliFMDParameters::Instance();
  UShort_t threshold    = 0;
  UInt_t   prevddl      = 0;
  UInt_t   prevaddr     = 0xFFF;
  // UShort_t prevStrip    = 0;
  
  // Which channel number in the ALTRO channel we're at 
  UShort_t nWords       = 0;
  UShort_t preSamples   = 0;
  
  // How many times the ALTRO Samples one VA1_ALICE channel 
  Int_t sampleRate      = 1;
  
  // A buffer to hold 1 ALTRO channel - Normally, one ALTRO channel
  // holds 128 VA1_ALICE channels, sampled at a rate of `sampleRate' 
  TArrayI data(pars->GetChannelsPerAltro() * 8);

  // The Altro buffer 
  AliAltroBuffer* altro = 0;
    
  // Loop over the digits in the event.  Note, that we assume the
  // the digits are in order in the branch.   If they were not, we'd
  // have to cache all channels before we could write the data to
  // the ALTRO buffer, or we'd have to set up a map of the digits. 
  for (Int_t i = 0; i < nDigits; i++) {
    // Get the digit
    AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));

    UShort_t det    = digit->Detector();
    Char_t   ring   = digit->Ring();
    UShort_t sector = digit->Sector();
    UShort_t strip  = digit->Strip();
    UInt_t   ddl;
    UInt_t   addr;  
    threshold       = pars->GetZeroSuppression(det, ring, sector, strip);
    if (!pars->Detector2Hardware(det, ring, sector, strip, ddl, addr)) {
      AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]", 
		    det, ring, sector, strip));
      continue;
    }
    if (addr != prevaddr) {
      // Flush a channel to output 
      AliDebug(15, Form("Now hardware address 0x%x from FMD%d%c[%2d,%3d] "
			"(board 0x%x, chip 0x%x, channel 0x%x), flushing old "
			"channel at 0x%x with %d words", 
			addr, det, ring, sector, strip, 
			(addr >> 7), (addr >> 4) & 0x7, addr & 0xf, 
			prevaddr, nWords));
      if (altro) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold);
      nWords   = preSamples;
      prevaddr = addr;
      for (size_t i = 0; i < nWords; i++) data[i] = digit->Count(0);
    }
    if (ddl != prevddl) {
      AliDebug(15, Form("FMD: New DDL, was %d, now %d", prevddl, ddl));
      // If an altro exists, delete the object, flushing the data to
      // disk, and closing the file. 
      if (altro) { 
	// When the first argument is false, we write the real
	// header. 
	AliDebug(15, Form("Closing output"));
	altro->Flush();
	altro->WriteDataHeader(kFALSE, kFALSE);
	delete altro;
	altro = 0;
      }
      prevddl = ddl;
      // Need to open a new DDL! 
      TString filename(Form("%s_%d.ddl", fFMD->GetName(),  ddl));
      AliDebug(15, Form("New altro buffer with DDL file %s", filename.Data()));
      // Create a new altro buffer - a `1' as the second argument
      // means `write mode' 
      altro = new AliAltroBuffer(filename.Data());
      altro->SetMapping(pars->GetAltroMap());      
      // Write a dummy (first argument is true) header to the DDL
      // file - later on, when we close the file, we write the real
      // header
      altro->WriteDataHeader(kTRUE, kFALSE);
    }
    
    // Store the counts of the ADC in the channel buffer 
    sampleRate = pars->GetSampleRate(det, ring, sector, strip);
    for (int s = 0; s < sampleRate; s++) {
      data[nWords] = digit->Count(s);
      nWords++;
    }
  }
  // Finally, we need to close the final ALTRO buffer if it wasn't
  // already 
  if (altro) {
    if (nWords > 0) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold);
    altro->Flush();
    altro->WriteDataHeader(kFALSE, kFALSE);
    delete altro;
  }
}
#else
//____________________________________________________________________
void
AliFMDRawWriter::WriteDigits(TClonesArray* digits)
{
  Int_t nDigits = digits->GetEntries();
  if (nDigits < 1) return;

  AliFMDParameters*  pars    = AliFMDParameters::Instance();
  AliFMDAltroWriter* writer  = 0;
  Int_t          sampleRate  = -1;
  UShort_t       hwaddr      = 0;
  UShort_t       ddl         = 0;
  std::ofstream* file        = 0;
  Int_t          ret         = 0;
  for (Int_t i = 0; i < nDigits; i++) {
    // Get the digit
    AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));
    UInt_t   thisDDL, thisHwaddr;
    UShort_t det    = digit->Detector();
    Char_t   ring   = digit->Ring();
    UShort_t sector = digit->Sector();
    UShort_t strip  = digit->Strip();
    if (!pars->Detector2Hardware(det,ring,sector,strip,thisDDL,thisHwaddr)) {
      AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]",
		    det, ring, sector, strip));
      continue;
    }
    AliDebug(40, Form("Got DDL=%d and address=%d from FMD%d%c[%2d,%3d]", 
		     thisDDL, thisHwaddr, det, ring, sector, strip));
    // Check if we're still in the same channel
    if (thisHwaddr != hwaddr) {
      AliDebug(30, Form("Now hardware address 0x%x from FMD%d%c[%2d,%3d] "
		       "(board 0x%x, chip 0x%x, channel 0x%x)",
		       thisHwaddr, det, ring, sector, strip, 
		       (thisHwaddr >> 7), (thisHwaddr >> 4) & 0x7, 
		       thisHwaddr & 0xf));
      if (writer) writer->AddChannelTrailer(hwaddr);
      hwaddr = thisHwaddr;
    }
    // Check if we're still in the same detector (DDL)
    if (ddl != thisDDL) {
      if (writer) {
	AliDebug(1, Form("Closing altro writer %p", writer));
	if ((ret = writer->Close()) < 0) {
	  AliError(Form("Error: %s", writer->ErrorString(ret)));
	  return;
	}
	delete writer;
	writer = 0;
	file->close();
	delete file;
	file = 0;
      }
      ddl = thisDDL;
    }
    // If we haven't got a writer (either because none were made so
    // far, or because we've switch DDL), make one. 
    if (!writer) {
      AliDebug(1, Form("Opening new ALTRO writer w/file FMD_%d.ddl", ddl));
      file   = new std::ofstream(Form("FMD_%d.ddl", ddl));
      if (!file || !*file) {
	AliFatal(Form("Failed to open file FMD_%d.ddl", ddl));
	return;
      }
      writer  = new AliFMDAltroWriter(*file);
      writer->SetThreshold(pars->GetZeroSuppression(det, ring, sector, strip));
    }
    // Write out our signal
    sampleRate =  pars->GetSampleRate(det,ring,sector,strip);
    writer->AddSignal(digit->Count1());
    if (sampleRate >= 2) writer->AddSignal(digit->Count2());
    if (sampleRate >= 3) writer->AddSignal(digit->Count3());
  }
  if (writer) {
    writer->AddChannelTrailer(hwaddr);
    writer->Close();
    delete writer;
    file->close();
    delete file;
  }
}
#endif


//____________________________________________________________________
// 
// EOF
//
Commit	Line	Data
e802be3e	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
e802be3e	15	/* $Id$ */
c2fc1258	16	/** @file AliFMDRawWriter.cxx
	17	@author Christian Holm Christensen <cholm@nbi.dk>
	18	@date Mon Mar 27 12:45:56 2006
	19	@brief Class to write raw data
	20	*/
e802be3e	21	//____________________________________________________________________
	22	//
	23	// Class to write ADC values to a raw data file
	24	//
7684b53c	25	// This class writes FMD Raw data to a file. The sample rate (number
	26	// of times the ALTRO ADC samples each pre-amp. channel - that is,
	27	// data from a single strip), can be set via SetSampleRate.
	28	//
	29	// Zero-suppression can be enabled by calling SetThreshold with a
	30	// non-zero argument. ADC values less than the value set will not be
	31	// written to output. Note, that if you use zero-suppression, you
	32	// need to explicitly set the sample rate when reading back the data
	33	// with AliFMDRawReader.
	34	//
	35	// This class uses the AliAltroBuffer class to write the data in the
	36	// ALTRO format. See the Exec member function for more information on
	37	// that format.
	38	//
56b1929b	39	#include <AliLog.h> // ALILOG_H
	40	#include <AliLoader.h> // ALILOADER_H
	41	#include <AliAltroBuffer.h> // ALIALTROBUFFER_H
e802be3e	42	#include "AliFMD.h" // ALIFMD_H
1a1fdef7	43	#include "AliFMDParameters.h" // ALIFMDPARAMETERS_H
e802be3e	44	#include "AliFMDDigit.h" // ALIFMDDIGIT_H
e802be3e	45	#include "AliFMDRawWriter.h" // ALIFMDRAWREADER_H
1e8f773e	46	#include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H
c2fc1258	47	// #include "AliFMDAltroIO.h" // ALIFMDALTROWRITER_H
56b1929b	48	#include <TArrayI.h> // ROOT_TArrayI
e802be3e	49	#include <TClonesArray.h> // ROOT_TClonesArray
02a27b50	50	// #include <fstream>
e802be3e	51
e802be3e	52	//____________________________________________________________________
925e6570	53	ClassImp(AliFMDRawWriter)
1a1fdef7	54	#if 0
	55	; // This is here to keep Emacs for indenting the next line
	56	#endif
e802be3e	57
	58	//____________________________________________________________________
	59	AliFMDRawWriter::AliFMDRawWriter(AliFMD* fmd)
	60	: TTask("FMDRawWriter", "Writer of Raw ADC values from the FMD"),
	61	fFMD(fmd)
02a27b50	62	{
	63	// CTOR
	64	}
	65
e802be3e	66
	67
	68	//____________________________________________________________________
	69	void
	70	AliFMDRawWriter::Exec(Option_t*)
	71	{
	72	// Turn digits into raw data.
	73	//
	74	// Digits are read from the Digit branch, and processed to make
	75	// three DDL files, one for each of the sub-detectors FMD1, FMD2,
	76	// and FMD3.
	77	//
	78	// The raw data files consists of a header, followed by ALTRO
	79	// formatted blocks.
	80	//
	81	// +-------------+
	82	// \| Header \|
	83	// +-------------+
	84	// \| ALTRO Block \|
	85	// \| ... \|
	86	// +-------------+
	87	// DDL file
	88	//
	89	// An ALTRO formatted block, in the FMD context, consists of a
	90	// number of counts followed by a trailer.
	91	//
	92	// +------------------+
	93	// \| Count \|
	94	// \| ... \|
	95	// \| possible fillers \|
	96	// +------------------+
	97	// \| Trailer \|
	98	// +------------------+
	99	// ALTRO block
	100	//
	101	// The counts are listed backwards, that is, starting with the
	102	// latest count, and ending in the first.
	103	//
	104	// Each count consist of 1 or more ADC samples of the VA1_ALICE
	105	// pre-amp. signal. Just how many samples are used depends on
	106	// whether the ALTRO over samples the pre-amp. Each sample is a
	107	// 10-bit word, and the samples are grouped into 40-bit blocks
	108	//
	109	// +------------------------------------+
c2fc1258	110	// \| S(1) \| S(2) \| S(3) \| S(4) \|
e802be3e	111	// \| ... \| ... \| ... \| ... \|
c2fc1258	112	// \| S(n) \| T(n) \| n+2 \| 2AA \|
e802be3e	113	// +------------------------------------+
	114	// Counts + possible filler
	115	//
	116	// The trailer of the number of words of signales, the starting
	117	// strip number, the sector number, and the ring ID; each 10-bit
	118	// words, packed into 40-bits.
	119	//
	120	// +------------------------------------+
c2fc1258	121	// \| 2AAA \| Len \| A \| Address \|
e802be3e	122	// +------------------------------------+
	123	// Trailer
	124	//
	125	// Note, that this method assumes that the digits are ordered.
	126	//
	127	AliLoader* loader = fFMD->GetLoader();
	128	loader->LoadDigits();
	129	TTree* digitTree = loader->TreeD();
	130	if (!digitTree) {
	131	Error("Digits2Raw", "no digit tree");
	132	return;
	133	}
	134
	135	TClonesArray* digits = new TClonesArray("AliFMDDigit", 1000);
	136	fFMD->SetTreeAddress();
	137	TBranch* digitBranch = digitTree->GetBranch(fFMD->GetName());
	138	if (!digitBranch) {
	139	Error("Digits2Raw", "no branch for %s", fFMD->GetName());
	140	return;
	141	}
	142	digitBranch->SetAddress(&digits);
	143
	144	Int_t nEvents = Int_t(digitTree->GetEntries());
	145	for (Int_t event = 0; event < nEvents; event++) {
	146	fFMD->ResetDigits();
	147	digitTree->GetEvent(event);
	148
1e8f773e	149	// Write out the digits
	150	WriteDigits(digits);
	151	}
	152	loader->UnloadDigits();
	153	}
e802be3e	154
c2fc1258	155	#if 1
	156	//____________________________________________________________________
	157	void
	158	AliFMDRawWriter::WriteDigits(TClonesArray* digits)
	159	{
02a27b50	160	// WRite an array of digits to disk file
c2fc1258	161	Int_t nDigits = digits->GetEntries();
	162	if (nDigits < 1) return;
	163
	164	AliFMDParameters* pars = AliFMDParameters::Instance();
	165	UShort_t threshold = 0;
	166	UInt_t prevddl = 0;
	167	UInt_t prevaddr = 0xFFF;
	168	// UShort_t prevStrip = 0;
	169
	170	// Which channel number in the ALTRO channel we're at
	171	UShort_t nWords = 0;
	172	UShort_t preSamples = 0;
	173
	174	// How many times the ALTRO Samples one VA1_ALICE channel
	175	Int_t sampleRate = 1;
	176
	177	// A buffer to hold 1 ALTRO channel - Normally, one ALTRO channel
	178	// holds 128 VA1_ALICE channels, sampled at a rate of `sampleRate'
	179	TArrayI data(pars->GetChannelsPerAltro() * 8);
	180
	181	// The Altro buffer
	182	AliAltroBuffer* altro = 0;
	183
	184	// Loop over the digits in the event. Note, that we assume the
	185	// the digits are in order in the branch. If they were not, we'd
	186	// have to cache all channels before we could write the data to
	187	// the ALTRO buffer, or we'd have to set up a map of the digits.
	188	for (Int_t i = 0; i < nDigits; i++) {
	189	// Get the digit
	190	AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));
	191
	192	UShort_t det = digit->Detector();
	193	Char_t ring = digit->Ring();
	194	UShort_t sector = digit->Sector();
	195	UShort_t strip = digit->Strip();
	196	UInt_t ddl;
	197	UInt_t addr;
	198	threshold = pars->GetZeroSuppression(det, ring, sector, strip);
	199	if (!pars->Detector2Hardware(det, ring, sector, strip, ddl, addr)) {
	200	AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]",
	201	det, ring, sector, strip));
	202	continue;
	203	}
	204	if (addr != prevaddr) {
	205	// Flush a channel to output
	206	AliDebug(15, Form("Now hardware address 0x%x from FMD%d%c[%2d,%3d] "
	207	"(board 0x%x, chip 0x%x, channel 0x%x), flushing old "
	208	"channel at 0x%x with %d words",
	209	addr, det, ring, sector, strip,
	210	(addr >> 7), (addr >> 4) & 0x7, addr & 0xf,
	211	prevaddr, nWords));
	212	if (altro) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold);
	213	nWords = preSamples;
	214	prevaddr = addr;
	215	for (size_t i = 0; i < nWords; i++) data[i] = digit->Count(0);
	216	}
	217	if (ddl != prevddl) {
	218	AliDebug(15, Form("FMD: New DDL, was %d, now %d", prevddl, ddl));
	219	// If an altro exists, delete the object, flushing the data to
	220	// disk, and closing the file.
	221	if (altro) {
	222	// When the first argument is false, we write the real
	223	// header.
	224	AliDebug(15, Form("Closing output"));
225	altro->Flush();
226	altro->WriteDataHeader(kFALSE, kFALSE);
227	delete altro;
228	altro = 0;
229	}
230	prevddl = ddl;
231	// Need to open a new DDL!
232	TString filename(Form("%s_%d.ddl", fFMD->GetName(), ddl));
233	AliDebug(15, Form("New altro buffer with DDL file %s", filename.Data()));
234	// Create a new altro buffer - a `1' as the second argument
235	// means `write mode'
4c846604	236	altro = new AliAltroBuffer(filename.Data());
c2fc1258	237	altro->SetMapping(pars->GetAltroMap());
	238	// Write a dummy (first argument is true) header to the DDL
	239	// file - later on, when we close the file, we write the real
	240	// header
	241	altro->WriteDataHeader(kTRUE, kFALSE);
	242	}
	243
	244	// Store the counts of the ADC in the channel buffer
	245	sampleRate = pars->GetSampleRate(det, ring, sector, strip);
	246	for (int s = 0; s < sampleRate; s++) {
	247	data[nWords] = digit->Count(s);
	248	nWords++;
	249	}
	250	}
	251	// Finally, we need to close the final ALTRO buffer if it wasn't
	252	// already
	253	if (altro) {
	254	if (nWords > 0) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold);
	255	altro->Flush();
	256	altro->WriteDataHeader(kFALSE, kFALSE);
	257	delete altro;
	258	}
	259	}
	260	#else
1e8f773e	261	//____________________________________________________________________
	262	void
	263	AliFMDRawWriter::WriteDigits(TClonesArray* digits)
	264	{
	265	Int_t nDigits = digits->GetEntries();
	266	if (nDigits < 1) return;
e802be3e	267
1e8f773e	268	AliFMDParameters* pars = AliFMDParameters::Instance();
	269	AliFMDAltroWriter* writer = 0;
	270	Int_t sampleRate = -1;
	271	UShort_t hwaddr = 0;
	272	UShort_t ddl = 0;
	273	std::ofstream* file = 0;
	274	Int_t ret = 0;
	275	for (Int_t i = 0; i < nDigits; i++) {
	276	// Get the digit
	277	AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));
	278	UInt_t thisDDL, thisHwaddr;
	279	UShort_t det = digit->Detector();
	280	Char_t ring = digit->Ring();
	281	UShort_t sector = digit->Sector();
	282	UShort_t strip = digit->Strip();
	283	if (!pars->Detector2Hardware(det,ring,sector,strip,thisDDL,thisHwaddr)) {
	284	AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]",
	285	det, ring, sector, strip));
	286	continue;
	287	}
	288	AliDebug(40, Form("Got DDL=%d and address=%d from FMD%d%c[%2d,%3d]",
	289	thisDDL, thisHwaddr, det, ring, sector, strip));
	290	// Check if we're still in the same channel
	291	if (thisHwaddr != hwaddr) {
	292	AliDebug(30, Form("Now hardware address 0x%x from FMD%d%c[%2d,%3d] "
	293	"(board 0x%x, chip 0x%x, channel 0x%x)",
	294	thisHwaddr, det, ring, sector, strip,
	295	(thisHwaddr >> 7), (thisHwaddr >> 4) & 0x7,
	296	thisHwaddr & 0xf));
	297	if (writer) writer->AddChannelTrailer(hwaddr);
	298	hwaddr = thisHwaddr;
	299	}
	300	// Check if we're still in the same detector (DDL)
	301	if (ddl != thisDDL) {
	302	if (writer) {
	303	AliDebug(1, Form("Closing altro writer %p", writer));
	304	if ((ret = writer->Close()) < 0) {
	305	AliError(Form("Error: %s", writer->ErrorString(ret)));
	306	return;
	307	}
	308	delete writer;
	309	writer = 0;
	310	file->close();
	311	delete file;
	312	file = 0;
	313	}
	314	ddl = thisDDL;
	315	}
	316	// If we haven't got a writer (either because none were made so
	317	// far, or because we've switch DDL), make one.
	318	if (!writer) {
	319	AliDebug(1, Form("Opening new ALTRO writer w/file FMD_%d.ddl", ddl));
	320	file = new std::ofstream(Form("FMD_%d.ddl", ddl));
	321	if (!file \|\| !*file) {
	322	AliFatal(Form("Failed to open file FMD_%d.ddl", ddl));
	323	return;
	324	}
	325	writer = new AliFMDAltroWriter(*file);
	326	writer->SetThreshold(pars->GetZeroSuppression(det, ring, sector, strip));
1e8f773e	327	}
1e8f773e	328	// Write out our signal
c2fc1258	329	sampleRate = pars->GetSampleRate(det,ring,sector,strip);
1e8f773e	330	writer->AddSignal(digit->Count1());
	331	if (sampleRate >= 2) writer->AddSignal(digit->Count2());
	332	if (sampleRate >= 3) writer->AddSignal(digit->Count3());
	333	}
	334	if (writer) {
	335	writer->AddChannelTrailer(hwaddr);
	336	writer->Close();
	337	delete writer;
	338	file->close();
	339	delete file;
	340	}
	341	}
9f662337	342	#endif
7684b53c	343
c2fc1258	344
7684b53c	345
7684b53c	346
e802be3e	347	//____________________________________________________________________
	348	//
	349	// EOF
	350	//