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Renamed SampleSourceFifo to SampleSourceFifoDB to mark double buffered nature of FIFO

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f4exb
2019-11-02 00:50:00 +01:00
parent 5bc6b7e702
commit e6a929470f
38 changed files with 116 additions and 116 deletions
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sdrbase/dsp/samplesourcefifo.cpp
-123
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@@ -1,123 +0,0 @@
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 Edouard Griffiths, F4EXB //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <algorithm>
#include <assert.h>
#include "samplesourcefifo.h"
SampleSourceFifo::SampleSourceFifo(uint32_t size, QObject* parent) :
QObject(parent),
m_size(size),
m_init(false)
{
m_data.resize(2*m_size);
init();
}
SampleSourceFifo::SampleSourceFifo(const SampleSourceFifo& other) :
QObject(other.parent()),
m_size(other.m_size),
m_data(other.m_data)
{
init();
}
SampleSourceFifo::~SampleSourceFifo()
{}
void SampleSourceFifo::resize(uint32_t size)
{
qDebug("SampleSourceFifo::resize: %d", size);
m_size = size;
m_data.resize(2*m_size);
init();
}
void SampleSourceFifo::init()
{
static Sample zero = {0,0};
std::fill(m_data.begin(), m_data.end(), zero);
m_ir = 0;
m_iw = m_size/2;
m_init = true;
}
void SampleSourceFifo::readAdvance(SampleVector::iterator& readUntil, unsigned int nbSamples)
{
// QMutexLocker mutexLocker(&m_mutex);
assert(nbSamples <= m_size/2);
emit dataWrite(nbSamples);
m_ir = (m_ir + nbSamples) % m_size;
readUntil = m_data.begin() + m_size + m_ir;
emit dataRead(nbSamples);
}
void SampleSourceFifo::readAdvance(SampleVector::const_iterator& readUntil, unsigned int nbSamples)
{
// QMutexLocker mutexLocker(&m_mutex);
assert(nbSamples <= m_size/2);
emit dataWrite(nbSamples);
m_ir = (m_ir + nbSamples) % m_size;
readUntil = m_data.begin() + m_size + m_ir;
emit dataRead(nbSamples);
}
void SampleSourceFifo::write(const Sample& sample)
{
m_data[m_iw] = sample;
m_data[m_iw+m_size] = sample;
{
// QMutexLocker mutexLocker(&m_mutex);
m_iw = (m_iw+1) % m_size;
}
}
void SampleSourceFifo::getReadIterator(SampleVector::iterator& readUntil)
{
readUntil = m_data.begin() + m_size + m_ir;
}
void SampleSourceFifo::getWriteIterator(SampleVector::iterator& writeAt)
{
writeAt = m_data.begin() + m_iw;
}
void SampleSourceFifo::bumpIndex(SampleVector::iterator& writeAt)
{
m_data[m_iw+m_size] = m_data[m_iw];
{
// QMutexLocker mutexLocker(&m_mutex);
m_iw = (m_iw+1) % m_size;
}
writeAt = m_data.begin() + m_iw;
}
int SampleSourceFifo::getIteratorOffset(const SampleVector::iterator& iterator)
{
return iterator - m_data.begin();
}
void SampleSourceFifo::setIteratorFromOffset(SampleVector::iterator& iterator, int offset)
{
iterator = m_data.begin() + offset;
}