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sdrangel/sdrbase/dsp/filerecord.cpp
2018-05-11 09:08:20 +02:00

149 lines
3.7 KiB
C++

#include <dsp/filerecord.h>
#include "dsp/dspcommands.h"
#include "util/simpleserializer.h"
#include "util/message.h"
#include <QDebug>
#include <QDateTime>
FileRecord::FileRecord() :
BasebandSampleSink(),
m_fileName("test.sdriq"),
m_sampleRate(0),
m_centerFrequency(0),
m_recordOn(false),
m_recordStart(false),
m_byteCount(0)
{
setObjectName("FileSink");
}
FileRecord::FileRecord(const QString& filename) :
BasebandSampleSink(),
m_fileName(filename),
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& filename)
{
if (!m_recordOn)
{
m_fileName = filename;
}
}
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 __attribute__((unused)))
{
// 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_sampleFile.is_open())
{
qDebug() << "FileRecord::startRecording";
m_sampleFile.open(m_fileName.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;
return true;
}
else
{
return false;
}
}
void FileRecord::handleConfigure(const QString& fileName)
{
if (fileName != m_fileName)
{
stopRecording();
}
m_fileName = fileName;
}
void FileRecord::writeHeader()
{
m_sampleFile.write((const char *) &m_sampleRate, sizeof(qint32)); // 4 bytes
m_sampleFile.write((const char *) &m_centerFrequency, sizeof(quint64)); // 8 bytes
std::time_t ts = time(0);
m_sampleFile.write((const char *) &ts, sizeof(std::time_t)); // 8 bytes
quint32 sampleSize = SDR_RX_SAMP_SZ;
m_sampleFile.write((const char *) &sampleSize, sizeof(int)); // 4 bytes
}
void FileRecord::readHeader(std::ifstream& sampleFile, Header& header)
{
sampleFile.read((char *) &(header.sampleRate), sizeof(qint32));
sampleFile.read((char *) &(header.centerFrequency), sizeof(quint64));
sampleFile.read((char *) &(header.startTimeStamp), sizeof(std::time_t));
sampleFile.read((char *) &(header.sampleSize), sizeof(quint32));
if ((header.sampleSize != 16) && (header.sampleSize != 24)) { // assume 16 bits if garbage (old I/Q file)
header.sampleSize = 16;
}
}