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sdrangel/plugins/samplesource/fcdproplus/fcdproplusreader.cpp

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///////////////////////////////////////////////////////////////////////////////////
// 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 <QDebug>
#include <QAudio>
#include <QAudioDeviceInfo>
#include <QAudioInput>
#include <QAudioFormat>
#include <QIODevice>
#include <QList>
#include <stdio.h>
#include <errno.h>
#include "fcdproplusreader.h"
#include "../../../sdrbase/dsp/samplesinkfifo.h"
#include "fcdtraits.h"
FCDProPlusReader::FCDProPlusReader(SampleSinkFifo* sampleFifo, QObject* parent) :
QObject(parent),
m_fcdAudioInput(0),
m_fcdInput(0),
m_running(false),
m_convertBuffer(fcd_traits<ProPlus>::convBufSize),
m_fcdBuffer(fcd_traits<ProPlus>::fcdBufSize, 0),
m_sampleFifo(sampleFifo)
{
}
FCDProPlusReader::~FCDProPlusReader()
{
if (m_fcdAudioInput) {
delete m_fcdAudioInput;
}
}
void FCDProPlusReader::startWork()
{
QList<QAudioDeviceInfo> audioDevices = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
QList<QAudioDeviceInfo>::iterator audioDeviceIt, fcdDeviceIt = audioDevices.end();
for (audioDeviceIt = audioDevices.begin(); audioDeviceIt != audioDevices.end(); ++audioDeviceIt)
{
QAudioFormat fcdAudioFormat = audioDeviceIt->preferredFormat();
int sampleRate = fcdAudioFormat.sampleRate();
int sampleBits = fcdAudioFormat.sampleSize();
if ((sampleRate == 192000) && (sampleBits == 16))
{
qDebug() << "FCDProPlusReader::startWork: found: " << audioDeviceIt->deviceName()
<< " sampleRate: " << fcdAudioFormat.sampleRate()
<< " sampleBits: " << fcdAudioFormat.sampleSize();
fcdDeviceIt = audioDeviceIt;
break;
}
}
if (fcdDeviceIt == audioDevices.end())
{
qCritical() << "FCDProPlusReader::startWork: FCD Pro+ sound card not found";
return;
}
openFcdAudio(*fcdDeviceIt);
if (!m_fcdAudioInput)
{
qCritical() << "FCDProPlusReader::startWork: cannot open FCD Pro+ sound card";
return;
}
m_fcdAudioInput->stop();
m_fcdInput = m_fcdAudioInput->start();
if (!m_fcdInput)
{
qCritical() << "FCDProPlusReader::startWork: cannot start FCD Pro+ sound card";
return;
}
connect(m_fcdInput, SIGNAL(readyRead()), this, SLOT(readFcdAudio()));
m_running = true;
qDebug() << "FCDProPlusReader::startWork: started";
}
void FCDProPlusReader::stopWork()
{
m_running = false;
disconnect(m_fcdInput, SIGNAL(readyRead()), this, SLOT(readFcdAudio()));
m_fcdAudioInput->stop();
qDebug() << "FCDProPlusReader::stopWork: stopped";
}
void FCDProPlusReader::openFcdAudio(const QAudioDeviceInfo& fcdAudioDeviceInfo)
{
QAudioFormat fcdAudioFormat = fcdAudioDeviceInfo.preferredFormat();
qDebug() << "FCDProPlusReader::openFcdAudio: device: " << fcdAudioDeviceInfo.deviceName()
<< " sampleRate: " << fcdAudioFormat.sampleRate()
<< " sampleBits: " << fcdAudioFormat.sampleSize();
m_fcdAudioInput = new QAudioInput(fcdAudioDeviceInfo, fcdAudioFormat, this);
//m_fcdAudioInput->setBufferSize(1<<14);
//m_fcdAudioInput->setNotifyInterval(50);
}
void FCDProPlusReader::readFcdAudio()
{
if (!m_fcdAudioInput) {
return;
}
int len = m_fcdAudioInput->bytesReady();
// qDebug() << "FCDProPlusReader::readFcdAudio:"
// << " buffer size: " << m_fcdAudioInput->bufferSize()
// << " interval: " << m_fcdAudioInput->notifyInterval()
// << " len: " << len;
if (len > fcd_traits<ProPlus>::fcdBufSize) {
len = fcd_traits<ProPlus>::fcdBufSize;
}
int readLen = m_fcdInput->read(m_fcdBuffer.data(), len);
if (readLen > 0) {
m_sampleFifo->write((const quint8*) m_fcdBuffer.constData(), (uint) readLen);
}
}