sdrangel/sdrbase/dsp/filerecord.cpp

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4.9 KiB
C++
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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015-2018 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 <boost/crc.hpp>
#include <boost/cstdint.hpp>
#include <QDebug>
#include <QDateTime>
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#include "dsp/dspcommands.h"
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#include "util/simpleserializer.h"
#include "util/message.h"
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#include "filerecord.h"
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FileRecord::FileRecord() :
BasebandSampleSink(),
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m_fileName("test.sdriq"),
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m_sampleRate(0),
m_centerFrequency(0),
m_recordOn(false),
m_recordStart(false),
m_byteCount(0)
{
setObjectName("FileSink");
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}
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FileRecord::FileRecord(const QString& filename) :
BasebandSampleSink(),
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m_fileName(filename),
m_sampleRate(0),
m_centerFrequency(0),
m_recordOn(false),
m_recordStart(false),
m_byteCount(0)
{
setObjectName("FileRecord");
}
FileRecord::~FileRecord()
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{
stopRecording();
}
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void FileRecord::setFileName(const QString& filename)
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{
if (!m_recordOn)
{
m_fileName = filename;
}
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}
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void FileRecord::genUniqueFileName(uint deviceUID)
{
setFileName(QString("rec%1_%2.sdriq").arg(deviceUID).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz")));
}
void FileRecord::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly)
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{
(void) positiveOnly;
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// if no recording is active, send the samples to /dev/null
if(!m_recordOn)
return;
if (begin < end) // if there is something to put out
{
if (m_recordStart)
{
writeHeader();
m_recordStart = false;
}
m_sampleFile.write(reinterpret_cast<const char*>(&*(begin)), (end - begin)*sizeof(Sample));
m_byteCount += end - begin;
}
}
void FileRecord::start()
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{
}
void FileRecord::stop()
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{
stopRecording();
}
void FileRecord::startRecording()
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{
if (!m_sampleFile.is_open())
{
qDebug() << "FileRecord::startRecording";
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m_sampleFile.open(m_fileName.toStdString().c_str(), std::ios::binary);
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m_recordOn = true;
m_recordStart = true;
m_byteCount = 0;
}
}
void FileRecord::stopRecording()
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{
if (m_sampleFile.is_open())
{
qDebug() << "FileRecord::stopRecording";
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m_sampleFile.close();
m_recordOn = false;
m_recordStart = false;
}
}
bool FileRecord::handleMessage(const Message& message)
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{
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if (DSPSignalNotification::match(message))
{
DSPSignalNotification& notif = (DSPSignalNotification&) message;
m_sampleRate = notif.getSampleRate();
m_centerFrequency = notif.getCenterFrequency();
qDebug() << "FileRecord::handleMessage: DSPSignalNotification: m_inputSampleRate: " << m_sampleRate
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<< " m_centerFrequency: " << m_centerFrequency;
return true;
}
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else
{
return false;
}
}
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void FileRecord::handleConfigure(const QString& fileName)
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{
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if (fileName != m_fileName)
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{
stopRecording();
}
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m_fileName = fileName;
}
void FileRecord::writeHeader()
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{
Header header;
header.sampleRate = m_sampleRate;
header.centerFrequency = m_centerFrequency;
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std::time_t ts = time(0);
header.startTimeStamp = ts;
header.sampleSize = SDR_RX_SAMP_SZ;
header.filler = 0;
writeHeader(m_sampleFile, header);
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}
bool FileRecord::readHeader(std::ifstream& sampleFile, Header& header)
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{
sampleFile.read((char *) &header, sizeof(Header));
boost::crc_32_type crc32;
crc32.process_bytes(&header, 28);
return header.crc32 == crc32.checksum();
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}
void FileRecord::writeHeader(std::ofstream& sampleFile, Header& header)
{
boost::crc_32_type crc32;
crc32.process_bytes(&header, 28);
header.crc32 = crc32.checksum();
sampleFile.write((const char *) &header, sizeof(Header));
}