mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-17 22:01:45 -05:00
68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
|
///////////////////////////////////////////////////////////////////////////////////
|
||
|
|
// 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 //
|
||
|
|
// //
|
||
|
|
// 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 "samplesinkfifodoublebuffered.h"
|
||
|
|
|
||
|
|
SampleSinkFifoDoubleBuffered::SampleSinkFifoDoubleBuffered(uint32_t size, uint32_t signalThreshold) :
|
||
|
|
m_size(size),
|
||
|
|
m_signalThreshold(signalThreshold),
|
||
|
|
m_i(0),
|
||
|
|
m_count(0),
|
||
|
|
m_readIndex(0),
|
||
|
|
m_readCount(0)
|
||
|
|
{
|
||
|
|
assert(m_signalThreshold < m_size/2);
|
||
|
|
m_data.resize(2*m_size);
|
||
|
|
}
|
||
|
|
|
||
|
|
SampleSinkFifoDoubleBuffered::~SampleSinkFifoDoubleBuffered()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void SampleSinkFifoDoubleBuffered::getWriteIterator(SampleVector::iterator& it1)
|
||
|
|
{
|
||
|
|
it1 = m_data.begin() + m_i;
|
||
|
|
}
|
||
|
|
|
||
|
|
void SampleSinkFifoDoubleBuffered::bumpIndex(SampleVector::iterator& it1)
|
||
|
|
{
|
||
|
|
m_data[m_i+m_size] = m_data[m_i];
|
||
|
|
m_i = (m_i+1) % m_size;
|
||
|
|
it1 = m_data.begin() + m_i;
|
||
|
|
|
||
|
|
if (m_count < m_signalThreshold)
|
||
|
|
{
|
||
|
|
m_count++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
QMutexLocker mutexLocker(&m_mutex);
|
||
|
|
m_readIndex = m_i + m_size - m_count;
|
||
|
|
m_readCount = m_count;
|
||
|
|
m_count = 0;
|
||
|
|
emit dataReady();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void SampleSinkFifoDoubleBuffered::read(SampleVector::iterator& begin, SampleVector::iterator& end)
|
||
|
|
{
|
||
|
|
QMutexLocker mutexLocker(&m_mutex);
|
||
|
|
|
||
|
|
begin = m_data.begin() + m_readIndex;
|
||
|
|
end = begin + m_readCount;
|
||
|
|
}
|
||
|
|
|