mirror of
https://github.com/f4exb/sdrangel.git
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196 lines
5.6 KiB
C++
196 lines
5.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015-2018 Edouard Griffiths, F4EXB //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <boost/crc.hpp>
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#include <boost/cstdint.hpp>
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#include <QDebug>
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#include <QDateTime>
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#include "dsp/dspcommands.h"
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#include "util/simpleserializer.h"
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#include "util/message.h"
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#include "filerecord.h"
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FileRecord::FileRecord() :
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FileRecordInterface(),
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m_fileBase("test"),
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m_sampleRate(0),
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m_centerFrequency(0),
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m_recordOn(false),
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m_recordStart(false),
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m_byteCount(0),
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m_msShift(0)
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{
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setObjectName("FileRecord");
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}
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FileRecord::FileRecord(const QString& fileBase) :
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FileRecordInterface(),
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m_fileBase(fileBase),
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m_sampleRate(0),
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m_centerFrequency(0),
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m_recordOn(false),
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m_recordStart(false),
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m_byteCount(0)
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{
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setObjectName("FileRecord");
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}
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FileRecord::~FileRecord()
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{
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stopRecording();
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}
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void FileRecord::setFileName(const QString& fileBase)
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{
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if (!m_recordOn)
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{
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m_fileBase = fileBase;
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}
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}
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void FileRecord::genUniqueFileName(uint deviceUID, int istream)
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{
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if (istream < 0) {
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setFileName(QString("rec%1_%2.sdriq").arg(deviceUID).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz")));
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} else {
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setFileName(QString("rec%1_%2_%3.sdriq").arg(deviceUID).arg(istream).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz")));
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}
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}
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void FileRecord::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly)
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{
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(void) positiveOnly;
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// if no recording is active, send the samples to /dev/null
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if(!m_recordOn)
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return;
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if (begin < end) // if there is something to put out
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{
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if (m_recordStart)
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{
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writeHeader();
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m_recordStart = false;
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}
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m_sampleFile.write(reinterpret_cast<const char*>(&*(begin)), (end - begin)*sizeof(Sample));
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m_byteCount += end - begin;
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}
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}
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void FileRecord::start()
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{
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}
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void FileRecord::stop()
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{
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stopRecording();
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}
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bool FileRecord::startRecording()
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{
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if (m_recordOn) {
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stopRecording();
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}
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if (!m_sampleFile.is_open())
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{
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qDebug() << "FileRecord::startRecording";
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m_curentFileName = QString("%1.%2.sdriq").arg(m_fileBase).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz"));
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m_sampleFile.open(m_curentFileName.toStdString().c_str(), std::ios::binary);
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if (!m_sampleFile.is_open())
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{
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qWarning() << "FileRecord::startRecording: failed to open file: " << m_curentFileName;
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return false;
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}
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m_recordOn = true;
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m_recordStart = true;
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m_byteCount = 0;
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}
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return true;
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}
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bool FileRecord::stopRecording()
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{
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if (m_sampleFile.is_open())
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{
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qDebug() << "FileRecord::stopRecording";
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m_sampleFile.close();
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m_recordOn = false;
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m_recordStart = false;
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if (m_sampleFile.bad())
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{
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qWarning() << "FileRecord::stopRecording: an error occurred while writing to " << m_curentFileName;
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return false;
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}
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}
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return true;
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}
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bool FileRecord::handleMessage(const Message& message)
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{
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if (DSPSignalNotification::match(message))
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{
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DSPSignalNotification& notif = (DSPSignalNotification&) message;
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m_sampleRate = notif.getSampleRate();
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m_centerFrequency = notif.getCenterFrequency();
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qDebug() << "FileRecord::handleMessage: DSPSignalNotification: m_inputSampleRate: " << m_sampleRate
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<< " m_centerFrequency: " << m_centerFrequency;
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if (m_recordOn) {
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startRecording();
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}
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return true;
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}
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else
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{
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return false;
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}
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}
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void FileRecord::writeHeader()
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{
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Header header;
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header.sampleRate = m_sampleRate;
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header.centerFrequency = m_centerFrequency;
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std::time_t ts = time(0);
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header.startTimeStamp = ts + (m_msShift / 1000);
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header.sampleSize = SDR_RX_SAMP_SZ;
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header.filler = 0;
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writeHeader(m_sampleFile, header);
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}
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bool FileRecord::readHeader(std::ifstream& sampleFile, Header& header)
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{
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sampleFile.read((char *) &header, sizeof(Header));
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boost::crc_32_type crc32;
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crc32.process_bytes(&header, 28);
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return header.crc32 == crc32.checksum();
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}
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void FileRecord::writeHeader(std::ofstream& sampleFile, Header& header)
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{
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boost::crc_32_type crc32;
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crc32.process_bytes(&header, 28);
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header.crc32 = crc32.checksum();
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sampleFile.write((const char *) &header, sizeof(Header));
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}
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