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