[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>
#include "AliDAQ.h"

//____________________________________________________________________
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(AliDAQ::DdlFileName(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 %s", AliDAQ::DdlFileName("FMD",ddl)));
      file   = new std::ofstream(AliDAQ::DdlFileName("FMD",ddl));
      if (!file || !*file) {
	AliFatal(Form("Failed to open file %s", AliDAQ::DdlFileName("FMD",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>
362c9d61	51	#include "AliDAQ.h"
e802be3e	52
e802be3e	53	//____________________________________________________________________
925e6570	54	ClassImp(AliFMDRawWriter)
1a1fdef7	55	#if 0
	56	; // This is here to keep Emacs for indenting the next line
	57	#endif
e802be3e	58
	59	//____________________________________________________________________
	60	AliFMDRawWriter::AliFMDRawWriter(AliFMD* fmd)
	61	: TTask("FMDRawWriter", "Writer of Raw ADC values from the FMD"),
	62	fFMD(fmd)
02a27b50	63	{
	64	// CTOR
	65	}
	66
e802be3e	67
	68
	69	//____________________________________________________________________
	70	void
	71	AliFMDRawWriter::Exec(Option_t*)
	72	{
	73	// Turn digits into raw data.
	74	//
	75	// Digits are read from the Digit branch, and processed to make
	76	// three DDL files, one for each of the sub-detectors FMD1, FMD2,
	77	// and FMD3.
	78	//
	79	// The raw data files consists of a header, followed by ALTRO
	80	// formatted blocks.
	81	//
	82	// +-------------+
	83	// \| Header \|
	84	// +-------------+
	85	// \| ALTRO Block \|
	86	// \| ... \|
	87	// +-------------+
	88	// DDL file
	89	//
	90	// An ALTRO formatted block, in the FMD context, consists of a
	91	// number of counts followed by a trailer.
	92	//
	93	// +------------------+
	94	// \| Count \|
	95	// \| ... \|
	96	// \| possible fillers \|
	97	// +------------------+
	98	// \| Trailer \|
	99	// +------------------+
	100	// ALTRO block
	101	//
	102	// The counts are listed backwards, that is, starting with the
	103	// latest count, and ending in the first.
	104	//
	105	// Each count consist of 1 or more ADC samples of the VA1_ALICE
	106	// pre-amp. signal. Just how many samples are used depends on
	107	// whether the ALTRO over samples the pre-amp. Each sample is a
	108	// 10-bit word, and the samples are grouped into 40-bit blocks
	109	//
	110	// +------------------------------------+
c2fc1258	111	// \| S(1) \| S(2) \| S(3) \| S(4) \|
e802be3e	112	// \| ... \| ... \| ... \| ... \|
c2fc1258	113	// \| S(n) \| T(n) \| n+2 \| 2AA \|
e802be3e	114	// +------------------------------------+
	115	// Counts + possible filler
	116	//
	117	// The trailer of the number of words of signales, the starting
	118	// strip number, the sector number, and the ring ID; each 10-bit
	119	// words, packed into 40-bits.
	120	//
	121	// +------------------------------------+
c2fc1258	122	// \| 2AAA \| Len \| A \| Address \|
e802be3e	123	// +------------------------------------+
	124	// Trailer
	125	//
	126	// Note, that this method assumes that the digits are ordered.
	127	//
	128	AliLoader* loader = fFMD->GetLoader();
	129	loader->LoadDigits();
	130	TTree* digitTree = loader->TreeD();
	131	if (!digitTree) {
	132	Error("Digits2Raw", "no digit tree");
	133	return;
	134	}
	135
	136	TClonesArray* digits = new TClonesArray("AliFMDDigit", 1000);
	137	fFMD->SetTreeAddress();
	138	TBranch* digitBranch = digitTree->GetBranch(fFMD->GetName());
	139	if (!digitBranch) {
	140	Error("Digits2Raw", "no branch for %s", fFMD->GetName());
	141	return;
	142	}
	143	digitBranch->SetAddress(&digits);
	144
	145	Int_t nEvents = Int_t(digitTree->GetEntries());
	146	for (Int_t event = 0; event < nEvents; event++) {
	147	fFMD->ResetDigits();
	148	digitTree->GetEvent(event);
	149
1e8f773e	150	// Write out the digits
	151	WriteDigits(digits);
	152	}
	153	loader->UnloadDigits();
	154	}
e802be3e	155
c2fc1258	156	#if 1
	157	//____________________________________________________________________
	158	void
	159	AliFMDRawWriter::WriteDigits(TClonesArray* digits)
	160	{
02a27b50	161	// WRite an array of digits to disk file
c2fc1258	162	Int_t nDigits = digits->GetEntries();
	163	if (nDigits < 1) return;
	164
	165	AliFMDParameters* pars = AliFMDParameters::Instance();
	166	UShort_t threshold = 0;
	167	UInt_t prevddl = 0;
	168	UInt_t prevaddr = 0xFFF;
	169	// UShort_t prevStrip = 0;
	170
	171	// Which channel number in the ALTRO channel we're at
	172	UShort_t nWords = 0;
	173	UShort_t preSamples = 0;
	174
	175	// How many times the ALTRO Samples one VA1_ALICE channel
	176	Int_t sampleRate = 1;
	177
	178	// A buffer to hold 1 ALTRO channel - Normally, one ALTRO channel
	179	// holds 128 VA1_ALICE channels, sampled at a rate of `sampleRate'
	180	TArrayI data(pars->GetChannelsPerAltro() * 8);
	181
	182	// The Altro buffer
	183	AliAltroBuffer* altro = 0;
	184
	185	// Loop over the digits in the event. Note, that we assume the
	186	// the digits are in order in the branch. If they were not, we'd
	187	// have to cache all channels before we could write the data to
	188	// the ALTRO buffer, or we'd have to set up a map of the digits.
	189	for (Int_t i = 0; i < nDigits; i++) {
	190	// Get the digit
	191	AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));
	192
	193	UShort_t det = digit->Detector();
	194	Char_t ring = digit->Ring();
	195	UShort_t sector = digit->Sector();
	196	UShort_t strip = digit->Strip();
	197	UInt_t ddl;
	198	UInt_t addr;
	199	threshold = pars->GetZeroSuppression(det, ring, sector, strip);
	200	if (!pars->Detector2Hardware(det, ring, sector, strip, ddl, addr)) {
	201	AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]",
	202	det, ring, sector, strip));
	203	continue;
	204	}
	205	if (addr != prevaddr) {
	206	// Flush a channel to output
	207	AliDebug(15, Form("Now hardware address 0x%x from FMD%d%c[%2d,%3d] "
	208	"(board 0x%x, chip 0x%x, channel 0x%x), flushing old "
	209	"channel at 0x%x with %d words",
	210	addr, det, ring, sector, strip,
	211	(addr >> 7), (addr >> 4) & 0x7, addr & 0xf,
	212	prevaddr, nWords));
	213	if (altro) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold);
	214	nWords = preSamples;
	215	prevaddr = addr;
	216	for (size_t i = 0; i < nWords; i++) data[i] = digit->Count(0);
	217	}
	218	if (ddl != prevddl) {
	219	AliDebug(15, Form("FMD: New DDL, was %d, now %d", prevddl, ddl));
	220	// If an altro exists, delete the object, flushing the data to
	221	// disk, and closing the file.
	222	if (altro) {
	223	// When the first argument is false, we write the real
	224	// header.
	225	AliDebug(15, Form("Closing output"));
226	altro->Flush();
227	altro->WriteDataHeader(kFALSE, kFALSE);
228	delete altro;
229	altro = 0;
230	}
231	prevddl = ddl;
232	// Need to open a new DDL!
362c9d61	233	TString filename(AliDAQ::DdlFileName(fFMD->GetName(), ddl));
c2fc1258	234	AliDebug(15, Form("New altro buffer with DDL file %s", filename.Data()));
	235	// Create a new altro buffer - a `1' as the second argument
	236	// means `write mode'
4c846604	237	altro = new AliAltroBuffer(filename.Data());
c2fc1258	238	altro->SetMapping(pars->GetAltroMap());
	239	// Write a dummy (first argument is true) header to the DDL
	240	// file - later on, when we close the file, we write the real
	241	// header
	242	altro->WriteDataHeader(kTRUE, kFALSE);
	243	}
	244
	245	// Store the counts of the ADC in the channel buffer
	246	sampleRate = pars->GetSampleRate(det, ring, sector, strip);
	247	for (int s = 0; s < sampleRate; s++) {
	248	data[nWords] = digit->Count(s);
	249	nWords++;
	250	}
	251	}
	252	// Finally, we need to close the final ALTRO buffer if it wasn't
	253	// already
	254	if (altro) {
	255	if (nWords > 0) altro->WriteChannel(prevaddr,nWords,data.fArray,threshold);
	256	altro->Flush();
	257	altro->WriteDataHeader(kFALSE, kFALSE);
	258	delete altro;
	259	}
	260	}
	261	#else
1e8f773e	262	//____________________________________________________________________
	263	void
	264	AliFMDRawWriter::WriteDigits(TClonesArray* digits)
	265	{
	266	Int_t nDigits = digits->GetEntries();
	267	if (nDigits < 1) return;
e802be3e	268
1e8f773e	269	AliFMDParameters* pars = AliFMDParameters::Instance();
	270	AliFMDAltroWriter* writer = 0;
	271	Int_t sampleRate = -1;
	272	UShort_t hwaddr = 0;
	273	UShort_t ddl = 0;
	274	std::ofstream* file = 0;
	275	Int_t ret = 0;
	276	for (Int_t i = 0; i < nDigits; i++) {
	277	// Get the digit
	278	AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));
	279	UInt_t thisDDL, thisHwaddr;
	280	UShort_t det = digit->Detector();
	281	Char_t ring = digit->Ring();
	282	UShort_t sector = digit->Sector();
	283	UShort_t strip = digit->Strip();
	284	if (!pars->Detector2Hardware(det,ring,sector,strip,thisDDL,thisHwaddr)) {
	285	AliError(Form("Failed to get hardware address for FMD%d%c[%2d,%3d]",
	286	det, ring, sector, strip));
	287	continue;
	288	}
	289	AliDebug(40, Form("Got DDL=%d and address=%d from FMD%d%c[%2d,%3d]",
	290	thisDDL, thisHwaddr, det, ring, sector, strip));
	291	// Check if we're still in the same channel
	292	if (thisHwaddr != hwaddr) {
	293	AliDebug(30, Form("Now hardware address 0x%x from FMD%d%c[%2d,%3d] "
	294	"(board 0x%x, chip 0x%x, channel 0x%x)",
	295	thisHwaddr, det, ring, sector, strip,
	296	(thisHwaddr >> 7), (thisHwaddr >> 4) & 0x7,
	297	thisHwaddr & 0xf));
	298	if (writer) writer->AddChannelTrailer(hwaddr);
	299	hwaddr = thisHwaddr;
	300	}
	301	// Check if we're still in the same detector (DDL)
	302	if (ddl != thisDDL) {
	303	if (writer) {
	304	AliDebug(1, Form("Closing altro writer %p", writer));
	305	if ((ret = writer->Close()) < 0) {
	306	AliError(Form("Error: %s", writer->ErrorString(ret)));
	307	return;
	308	}
	309	delete writer;
	310	writer = 0;
	311	file->close();
	312	delete file;
	313	file = 0;
	314	}
	315	ddl = thisDDL;
	316	}
	317	// If we haven't got a writer (either because none were made so
	318	// far, or because we've switch DDL), make one.
	319	if (!writer) {
362c9d61	320	AliDebug(1, Form("Opening new ALTRO writer w/file %s", AliDAQ::DdlFileName("FMD",ddl)));
362c9d61	321	file = new std::ofstream(AliDAQ::DdlFileName("FMD",ddl));
1e8f773e	322	if (!file \|\| !*file) {
362c9d61	323	AliFatal(Form("Failed to open file %s", AliDAQ::DdlFileName("FMD",ddl)));
1e8f773e	324	return;
	325	}
	326	writer = new AliFMDAltroWriter(*file);
	327	writer->SetThreshold(pars->GetZeroSuppression(det, ring, sector, strip));
1e8f773e	328	}
1e8f773e	329	// Write out our signal
c2fc1258	330	sampleRate = pars->GetSampleRate(det,ring,sector,strip);
1e8f773e	331	writer->AddSignal(digit->Count1());
	332	if (sampleRate >= 2) writer->AddSignal(digit->Count2());
	333	if (sampleRate >= 3) writer->AddSignal(digit->Count3());
	334	}
	335	if (writer) {
	336	writer->AddChannelTrailer(hwaddr);
	337	writer->Close();
	338	delete writer;
	339	file->close();
	340	delete file;
	341	}
	342	}
9f662337	343	#endif
7684b53c	344
c2fc1258	345
7684b53c	346
7684b53c	347
e802be3e	348	//____________________________________________________________________
	349	//
	350	// EOF
	351	//