sistrip::FEDBufferPayload Class Reference

#include <SiStripFEDBufferGenerator.h>

Public Member Functions
const uint8_t *	data () const
	FEDBufferPayload (const std::vector< std::vector< uint8_t > > &channelBuffers)
uint16_t	getFELength (const uint8_t internalFEUnitNum) const
size_t	lengthInBytes () const

Private Member Functions
void	appendToBuffer (size_t *pIndexInBuffer, const uint8_t value)
void	appendToBuffer (size_t *pIndexInBuffer, std::vector< uint8_t >::const_iterator start, std::vector< uint8_t >::const_iterator finish)

Private Attributes
std::vector< uint8_t >	data_
std::vector< uint16_t >	feLengths_

Detailed Description

Definition at line 60 of file SiStripFEDBufferGenerator.h.

Constructor & Destructor Documentation

sistrip::FEDBufferPayload::FEDBufferPayload

(

const std::vector< std::vector< uint8_t > > &

channelBuffers

)

Definition at line 54 of file SiStripFEDBufferGenerator.cc.

References begin, sistrip::FEDStripData::data_, end, sistrip::FEDCH_PER_FEUNIT, and sistrip::FEUNITS_PER_FED.

  {
    //calculate size of buffer and allocate enough memory
    uint32_t totalSize = 0;
    for (uint8_t iFE = 0; iFE < FEUNITS_PER_FED; iFE++) {
      for (uint8_t iCh = 0; iCh < FEDCH_PER_FEUNIT; iCh++) {
        totalSize += channelBuffers[iFE*FEDCH_PER_FEUNIT+iCh].size();
      }
      //if it does not finish on a 64Bit word boundary then take into account padding
      if (totalSize%8) {
        totalSize = ((totalSize/8) + 1)*8;
      }
    }
    data_.resize(totalSize);
    size_t indexInBuffer = 0;
    feLengths_.reserve(FEUNITS_PER_FED);
    //copy channel data into buffer with padding and update lengths
    for (uint8_t iFE = 0; iFE < FEUNITS_PER_FED; iFE++) {
      const size_t lengthAtStartOfFEUnit = indexInBuffer;
      //insert data for FE unit
      for (uint8_t iCh = 0; iCh < FEDCH_PER_FEUNIT; iCh++) {
        appendToBuffer(&indexInBuffer,channelBuffers[iFE*FEDCH_PER_FEUNIT+iCh].begin(),channelBuffers[iFE*FEDCH_PER_FEUNIT+iCh].end());
      }
      //store length
      feLengths_.push_back(indexInBuffer-lengthAtStartOfFEUnit);
      //add padding
      while (indexInBuffer % 8) appendToBuffer(&indexInBuffer,0);
    }
  }

Member Function Documentation

void sistrip::FEDBufferPayload::appendToBuffer ( size_t *  pIndexInBuffer, const uint8_t  value  )

inlineprivate

Definition at line 277 of file SiStripFEDBufferGenerator.h.

References sistrip::FEDStripData::ChannelData::data_.

    {
      data_[((*pIndexInBuffer)++)^7] = value;
    }

void sistrip::FEDBufferPayload::appendToBuffer ( size_t *  pIndexInBuffer, std::vector< uint8_t >::const_iterator  start, std::vector< uint8_t >::const_iterator  finish  )

inlineprivate

Definition at line 282 of file SiStripFEDBufferGenerator.h.

    {
      for (std::vector<uint8_t>::const_iterator iVal = start; iVal != finish; iVal++) {
        appendToBuffer(pIndexInBuffer,*iVal);
      }
    }

const uint8_t * sistrip::FEDBufferPayload::data

(

)

const

Definition at line 84 of file SiStripFEDBufferGenerator.cc.

References sistrip::FEDStripData::data_.

Referenced by sistrip::FEDBufferGenerator::fillBuffer().

  {
    //vectors are guarenteed to be contiguous
    if (lengthInBytes()) return &data_[0];
    //return NULL if there is no data yet
    else return nullptr;
  }

uint16_t sistrip::FEDBufferPayload::getFELength

(

const uint8_t

internalFEUnitNum

)

const

Definition at line 92 of file SiStripFEDBufferGenerator.cc.

References Exception.

Referenced by sistrip::FEDBufferGenerator::generateBuffer().

  {
    try{
      return feLengths_.at(internalFEUnitNum);
    } catch (const std::out_of_range&) {
      std::ostringstream ss;
      ss << "Invalid FE unit number " << internalFEUnitNum << ". "
         << "Number should be in internal numbering scheme (0-7). ";
      throw cms::Exception("FEDBufferGenerator") << ss.str();
    }
  }

size_t sistrip::FEDBufferPayload::lengthInBytes ( ) const

inline

Definition at line 272 of file SiStripFEDBufferGenerator.h.

References sistrip::FEDStripData::ChannelData::data_.

Referenced by sistrip::FEDBufferGenerator::bufferSizeInBytes(), and sistrip::FEDBufferGenerator::fillBuffer().

    {
      return data_.size();
    }

Member Data Documentation

std::vector<uint8_t> sistrip::FEDBufferPayload::data_

private

Definition at line 73 of file SiStripFEDBufferGenerator.h.

std::vector<uint16_t> sistrip::FEDBufferPayload::feLengths_

private

Definition at line 74 of file SiStripFEDBufferGenerator.h.