sdrangel/sdrbase/dsp/filerecord.cpp

184 wiersze
5.2 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// 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>
#include "dsp/dspcommands.h"
#include "util/simpleserializer.h"
#include "util/message.h"
#include "filerecord.h"
FileRecord::FileRecord() :
FileRecordInterface(),
m_fileBase("test"),
m_sampleRate(0),
m_centerFrequency(0),
m_recordOn(false),
m_recordStart(false),
m_byteCount(0),
m_msShift(0)
{
setObjectName("FileRecord");
}
FileRecord::FileRecord(const QString& fileBase) :
FileRecordInterface(),
m_fileBase(fileBase),
m_sampleRate(0),
m_centerFrequency(0),
m_recordOn(false),
m_recordStart(false),
m_byteCount(0)
{
setObjectName("FileRecord");
}
FileRecord::~FileRecord()
{
stopRecording();
}
void FileRecord::setFileName(const QString& fileBase)
{
if (!m_recordOn)
{
m_fileBase = fileBase;
}
}
void FileRecord::genUniqueFileName(uint deviceUID, int istream)
{
if (istream < 0) {
setFileName(QString("rec%1_%2.sdriq").arg(deviceUID).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz")));
} else {
setFileName(QString("rec%1_%2_%3.sdriq").arg(deviceUID).arg(istream).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)
{
(void) positiveOnly;
// 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()
{
}
void FileRecord::stop()
{
stopRecording();
}
void FileRecord::startRecording()
{
if (m_recordOn) {
stopRecording();
}
if (!m_sampleFile.is_open())
{
qDebug() << "FileRecord::startRecording";
m_curentFileName = QString("%1.%2.sdriq").arg(m_fileBase).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz"));
m_sampleFile.open(m_curentFileName.toStdString().c_str(), std::ios::binary);
m_recordOn = true;
m_recordStart = true;
m_byteCount = 0;
}
}
void FileRecord::stopRecording()
{
if (m_sampleFile.is_open())
{
qDebug() << "FileRecord::stopRecording";
m_sampleFile.close();
m_recordOn = false;
m_recordStart = false;
}
}
bool FileRecord::handleMessage(const Message& message)
{
if (DSPSignalNotification::match(message))
{
DSPSignalNotification& notif = (DSPSignalNotification&) message;
m_sampleRate = notif.getSampleRate();
m_centerFrequency = notif.getCenterFrequency();
qDebug() << "FileRecord::handleMessage: DSPSignalNotification: m_inputSampleRate: " << m_sampleRate
<< " m_centerFrequency: " << m_centerFrequency;
if (m_recordOn) {
startRecording();
}
return true;
}
else
{
return false;
}
}
void FileRecord::writeHeader()
{
Header header;
header.sampleRate = m_sampleRate;
header.centerFrequency = m_centerFrequency;
std::time_t ts = time(0);
header.startTimeStamp = ts + (m_msShift / 1000);
header.sampleSize = SDR_RX_SAMP_SZ;
header.filler = 0;
writeHeader(m_sampleFile, header);
}
bool FileRecord::readHeader(std::ifstream& sampleFile, Header& header)
{
sampleFile.read((char *) &header, sizeof(Header));
boost::crc_32_type crc32;
crc32.process_bytes(&header, 28);
return header.crc32 == crc32.checksum();
}
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));
}