kopia lustrzana https://github.com/f4exb/sdrangel
659 wiersze
22 KiB
C++
659 wiersze
22 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015 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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// //
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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 <string.h>
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#include <errno.h>
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#include <QDebug>
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#include <QNetworkReply>
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#include <QBuffer>
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#include "SWGDeviceSettings.h"
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#include "SWGFileSourceSettings.h"
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#include "SWGDeviceState.h"
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#include "SWGDeviceReport.h"
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#include "SWGFileSourceSettings.h"
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#include "util/simpleserializer.h"
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#include "dsp/dspcommands.h"
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#include "dsp/dspengine.h"
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#include "dsp/filerecord.h"
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#include "device/devicesourceapi.h"
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#include "filesourceinput.h"
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#include "filesourcethread.h"
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgConfigureFileSource, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgConfigureFileSourceName, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgConfigureFileSourceWork, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgConfigureFileSourceSeek, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgConfigureFileSourceStreamTiming, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgStartStop, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgPlayPause, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgReportFileSourceAcquisition, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgReportFileSourceStreamData, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgReportFileSourceStreamTiming, Message)
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MESSAGE_CLASS_DEFINITION(FileSourceInput::MsgReportHeaderCRC, Message)
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FileSourceInput::FileSourceInput(DeviceSourceAPI *deviceAPI) :
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m_deviceAPI(deviceAPI),
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m_settings(),
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m_fileSourceThread(NULL),
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m_deviceDescription(),
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m_fileName("..."),
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m_sampleRate(0),
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m_sampleSize(0),
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m_centerFrequency(0),
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m_recordLength(0),
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m_startingTimeStamp(0),
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m_masterTimer(deviceAPI->getMasterTimer())
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{
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qDebug("FileSourceInput::FileSourceInput: device source engine: %p", m_deviceAPI->getDeviceSourceEngine());
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qDebug("FileSourceInput::FileSourceInput: device source engine message queue: %p", m_deviceAPI->getDeviceEngineInputMessageQueue());
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qDebug("FileSourceInput::FileSourceInput: device source: %p", m_deviceAPI->getDeviceSourceEngine()->getSource());
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m_networkManager = new QNetworkAccessManager();
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connect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
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}
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FileSourceInput::~FileSourceInput()
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{
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disconnect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
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delete m_networkManager;
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stop();
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}
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void FileSourceInput::destroy()
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{
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delete this;
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}
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void FileSourceInput::openFileStream()
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{
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//stopInput();
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if (m_ifstream.is_open()) {
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m_ifstream.close();
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}
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m_ifstream.open(m_fileName.toStdString().c_str(), std::ios::binary | std::ios::ate);
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quint64 fileSize = m_ifstream.tellg();
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if (fileSize > sizeof(FileRecord::Header))
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{
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FileRecord::Header header;
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m_ifstream.seekg(0,std::ios_base::beg);
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bool crcOK = FileRecord::readHeader(m_ifstream, header);
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m_sampleRate = header.sampleRate;
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m_centerFrequency = header.centerFrequency;
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m_startingTimeStamp = header.startTimeStamp;
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m_sampleSize = header.sampleSize;
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QString crcHex = QString("%1").arg(header.crc32 , 0, 16);
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if (crcOK)
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{
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qDebug("FileSourceInput::openFileStream: CRC32 OK for header: %s", qPrintable(crcHex));
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m_recordLength = (fileSize - sizeof(FileRecord::Header)) / ((m_sampleSize == 24 ? 8 : 4) * m_sampleRate);
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}
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else
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{
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qCritical("FileSourceInput::openFileStream: bad CRC32 for header: %s", qPrintable(crcHex));
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m_recordLength = 0;
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}
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if (getMessageQueueToGUI()) {
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MsgReportHeaderCRC *report = MsgReportHeaderCRC::create(crcOK);
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getMessageQueueToGUI()->push(report);
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}
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}
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else
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{
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m_recordLength = 0;
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}
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qDebug() << "FileSourceInput::openFileStream: " << m_fileName.toStdString().c_str()
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<< " fileSize: " << fileSize << " bytes"
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<< " length: " << m_recordLength << " seconds"
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<< " sample rate: " << m_sampleRate << " S/s"
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<< " center frequency: " << m_centerFrequency << " Hz"
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<< " sample size: " << m_sampleSize << " bits";
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if (getMessageQueueToGUI()) {
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MsgReportFileSourceStreamData *report = MsgReportFileSourceStreamData::create(m_sampleRate,
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m_sampleSize,
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m_centerFrequency,
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m_startingTimeStamp,
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m_recordLength); // file stream data
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getMessageQueueToGUI()->push(report);
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}
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if (m_recordLength == 0) {
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m_ifstream.close();
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}
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}
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void FileSourceInput::seekFileStream(int seekMillis)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if ((m_ifstream.is_open()) && m_fileSourceThread && !m_fileSourceThread->isRunning())
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{
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quint64 seekPoint = ((m_recordLength * seekMillis) / 1000) * m_sampleRate;
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m_fileSourceThread->setSamplesCount(seekPoint);
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seekPoint *= (m_sampleSize == 24 ? 8 : 4); // + sizeof(FileSink::Header)
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m_ifstream.clear();
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m_ifstream.seekg(seekPoint + sizeof(FileRecord::Header), std::ios::beg);
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}
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}
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void FileSourceInput::init()
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{
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DSPSignalNotification *notif = new DSPSignalNotification(m_settings.m_sampleRate, m_settings.m_centerFrequency);
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m_deviceAPI->getDeviceEngineInputMessageQueue()->push(notif);
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}
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bool FileSourceInput::start()
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{
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if (!m_ifstream.is_open())
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{
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qWarning("FileSourceInput::start: file not open. not starting");
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return false;
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}
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QMutexLocker mutexLocker(&m_mutex);
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qDebug() << "FileSourceInput::start";
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if (m_ifstream.tellg() != 0) {
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m_ifstream.clear();
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m_ifstream.seekg(sizeof(FileRecord::Header), std::ios::beg);
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}
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if(!m_sampleFifo.setSize(m_settings.m_accelerationFactor * m_sampleRate * sizeof(Sample))) {
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qCritical("Could not allocate SampleFifo");
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return false;
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}
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m_fileSourceThread = new FileSourceThread(&m_ifstream, &m_sampleFifo, m_masterTimer, &m_inputMessageQueue);
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m_fileSourceThread->setSampleRateAndSize(m_settings.m_accelerationFactor * m_sampleRate, m_sampleSize); // Fast Forward: 1 corresponds to live. 1/2 is half speed, 2 is double speed
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m_fileSourceThread->startWork();
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m_deviceDescription = "FileSource";
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mutexLocker.unlock();
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qDebug("FileSourceInput::startInput: started");
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if (getMessageQueueToGUI()) {
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MsgReportFileSourceAcquisition *report = MsgReportFileSourceAcquisition::create(true); // acquisition on
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getMessageQueueToGUI()->push(report);
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}
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return true;
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}
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void FileSourceInput::stop()
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{
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qDebug() << "FileSourceInput::stop";
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QMutexLocker mutexLocker(&m_mutex);
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if(m_fileSourceThread != 0)
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{
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m_fileSourceThread->stopWork();
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delete m_fileSourceThread;
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m_fileSourceThread = 0;
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}
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m_deviceDescription.clear();
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if (getMessageQueueToGUI()) {
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MsgReportFileSourceAcquisition *report = MsgReportFileSourceAcquisition::create(false); // acquisition off
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getMessageQueueToGUI()->push(report);
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}
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}
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QByteArray FileSourceInput::serialize() const
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{
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return m_settings.serialize();
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}
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bool FileSourceInput::deserialize(const QByteArray& data)
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{
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bool success = true;
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if (!m_settings.deserialize(data))
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{
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m_settings.resetToDefaults();
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success = false;
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}
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MsgConfigureFileSource* message = MsgConfigureFileSource::create(m_settings, true);
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m_inputMessageQueue.push(message);
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if (getMessageQueueToGUI())
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{
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MsgConfigureFileSource* messageToGUI = MsgConfigureFileSource::create(m_settings, true);
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getMessageQueueToGUI()->push(messageToGUI);
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}
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return success;
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}
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const QString& FileSourceInput::getDeviceDescription() const
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{
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return m_deviceDescription;
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}
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int FileSourceInput::getSampleRate() const
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{
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return m_sampleRate;
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}
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quint64 FileSourceInput::getCenterFrequency() const
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{
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return m_centerFrequency;
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}
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void FileSourceInput::setCenterFrequency(qint64 centerFrequency)
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{
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FileSourceSettings settings = m_settings;
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settings.m_centerFrequency = centerFrequency;
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MsgConfigureFileSource* message = MsgConfigureFileSource::create(m_settings, false);
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m_inputMessageQueue.push(message);
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if (getMessageQueueToGUI())
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{
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MsgConfigureFileSource* messageToGUI = MsgConfigureFileSource::create(m_settings, false);
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getMessageQueueToGUI()->push(messageToGUI);
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}
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}
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quint64 FileSourceInput::getStartingTimeStamp() const
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{
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return m_startingTimeStamp;
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}
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bool FileSourceInput::handleMessage(const Message& message)
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{
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if (MsgConfigureFileSource::match(message))
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{
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MsgConfigureFileSource& conf = (MsgConfigureFileSource&) message;
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FileSourceSettings settings = conf.getSettings();
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applySettings(settings);
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return true;
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}
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else if (MsgConfigureFileSourceName::match(message))
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{
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MsgConfigureFileSourceName& conf = (MsgConfigureFileSourceName&) message;
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m_fileName = conf.getFileName();
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openFileStream();
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return true;
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}
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else if (MsgConfigureFileSourceWork::match(message))
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{
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MsgConfigureFileSourceWork& conf = (MsgConfigureFileSourceWork&) message;
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bool working = conf.isWorking();
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if (m_fileSourceThread != 0)
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{
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if (working) {
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m_fileSourceThread->startWork();
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} else {
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m_fileSourceThread->stopWork();
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}
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}
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return true;
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}
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else if (MsgConfigureFileSourceSeek::match(message))
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{
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MsgConfigureFileSourceSeek& conf = (MsgConfigureFileSourceSeek&) message;
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int seekMillis = conf.getMillis();
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seekFileStream(seekMillis);
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return true;
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}
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else if (MsgConfigureFileSourceStreamTiming::match(message))
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{
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MsgReportFileSourceStreamTiming *report;
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if (m_fileSourceThread != 0)
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{
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if (getMessageQueueToGUI())
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{
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report = MsgReportFileSourceStreamTiming::create(m_fileSourceThread->getSamplesCount());
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getMessageQueueToGUI()->push(report);
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}
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}
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return true;
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}
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else if (MsgStartStop::match(message))
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{
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MsgStartStop& cmd = (MsgStartStop&) message;
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qDebug() << "FileSourceInput::handleMessage: MsgStartStop: " << (cmd.getStartStop() ? "start" : "stop");
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if (cmd.getStartStop())
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{
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if (m_deviceAPI->initAcquisition())
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{
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m_deviceAPI->startAcquisition();
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}
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}
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else
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{
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m_deviceAPI->stopAcquisition();
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}
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if (m_settings.m_useReverseAPI) {
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webapiReverseSendStartStop(cmd.getStartStop());
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}
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return true;
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}
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else if (FileSourceThread::MsgReportEOF::match(message))
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{
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qDebug() << "FileSourceInput::handleMessage: MsgReportEOF";
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m_fileSourceThread->stopWork();
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if (getMessageQueueToGUI())
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{
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MsgReportFileSourceStreamTiming *report = MsgReportFileSourceStreamTiming::create(m_fileSourceThread->getSamplesCount());
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getMessageQueueToGUI()->push(report);
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}
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if (m_settings.m_loop)
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{
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seekFileStream(0);
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m_fileSourceThread->startWork();
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}
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else
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{
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if (getMessageQueueToGUI())
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{
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MsgPlayPause *report = MsgPlayPause::create(false);
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getMessageQueueToGUI()->push(report);
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}
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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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bool FileSourceInput::applySettings(const FileSourceSettings& settings, bool force)
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{
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QList<QString> reverseAPIKeys;
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if ((m_settings.m_centerFrequency != settings.m_centerFrequency) || force) {
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m_centerFrequency = settings.m_centerFrequency;
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}
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if ((m_settings.m_accelerationFactor != settings.m_accelerationFactor) || force)
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{
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reverseAPIKeys.append("accelerationFactor");
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if (m_fileSourceThread)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if (!m_sampleFifo.setSize(m_settings.m_accelerationFactor * m_sampleRate * sizeof(Sample))) {
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qCritical("FileSourceInput::applySettings: could not reallocate sample FIFO size to %lu",
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m_settings.m_accelerationFactor * m_sampleRate * sizeof(Sample));
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}
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m_fileSourceThread->setSampleRateAndSize(settings.m_accelerationFactor * m_sampleRate, m_sampleSize); // Fast Forward: 1 corresponds to live. 1/2 is half speed, 2 is double speed
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}
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}
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if ((m_settings.m_loop != settings.m_loop)) {
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reverseAPIKeys.append("loop");
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}
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if ((m_settings.m_fileName != settings.m_fileName)) {
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reverseAPIKeys.append("fileName");
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}
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if (settings.m_useReverseAPI)
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{
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bool fullUpdate = ((m_settings.m_useReverseAPI != settings.m_useReverseAPI) && settings.m_useReverseAPI) ||
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(m_settings.m_reverseAPIAddress != settings.m_reverseAPIAddress) ||
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(m_settings.m_reverseAPIPort != settings.m_reverseAPIPort) ||
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(m_settings.m_reverseAPIDeviceIndex != settings.m_reverseAPIDeviceIndex);
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webapiReverseSendSettings(reverseAPIKeys, settings, fullUpdate || force);
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}
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m_settings = settings;
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return true;
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}
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int FileSourceInput::webapiSettingsGet(
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SWGSDRangel::SWGDeviceSettings& response,
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QString& errorMessage)
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{
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(void) errorMessage;
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response.setFileSourceSettings(new SWGSDRangel::SWGFileSourceSettings());
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response.getFileSourceSettings()->init();
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webapiFormatDeviceSettings(response, m_settings);
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return 200;
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}
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int FileSourceInput::webapiSettingsPutPatch(
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bool force,
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const QStringList& deviceSettingsKeys,
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SWGSDRangel::SWGDeviceSettings& response, // query + response
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QString& errorMessage)
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{
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(void) errorMessage;
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FileSourceSettings settings = m_settings;
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if (deviceSettingsKeys.contains("fileName")) {
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settings.m_fileName = *response.getFileSourceSettings()->getFileName();
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}
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if (deviceSettingsKeys.contains("accelerationFactor")) {
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settings.m_accelerationFactor = response.getFileSourceSettings()->getAccelerationFactor();
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}
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if (deviceSettingsKeys.contains("loop")) {
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settings.m_loop = response.getFileSourceSettings()->getLoop() != 0;
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}
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if (deviceSettingsKeys.contains("useReverseAPI")) {
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settings.m_useReverseAPI = response.getFileSourceSettings()->getUseReverseApi() != 0;
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}
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if (deviceSettingsKeys.contains("reverseAPIAddress")) {
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settings.m_reverseAPIAddress = *response.getFileSourceSettings()->getReverseApiAddress();
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}
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if (deviceSettingsKeys.contains("reverseAPIPort")) {
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settings.m_reverseAPIPort = response.getFileSourceSettings()->getReverseApiPort();
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}
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if (deviceSettingsKeys.contains("reverseAPIDeviceIndex")) {
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settings.m_reverseAPIDeviceIndex = response.getFileSourceSettings()->getReverseApiDeviceIndex();
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}
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MsgConfigureFileSource *msg = MsgConfigureFileSource::create(settings, force);
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m_inputMessageQueue.push(msg);
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if (m_guiMessageQueue) // forward to GUI if any
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{
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MsgConfigureFileSource *msgToGUI = MsgConfigureFileSource::create(settings, force);
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m_guiMessageQueue->push(msgToGUI);
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}
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webapiFormatDeviceSettings(response, settings);
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return 200;
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}
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int FileSourceInput::webapiRunGet(
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SWGSDRangel::SWGDeviceState& response,
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QString& errorMessage)
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{
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(void) errorMessage;
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m_deviceAPI->getDeviceEngineStateStr(*response.getState());
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return 200;
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}
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int FileSourceInput::webapiRun(
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bool run,
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SWGSDRangel::SWGDeviceState& response,
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QString& errorMessage)
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{
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(void) errorMessage;
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m_deviceAPI->getDeviceEngineStateStr(*response.getState());
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MsgStartStop *message = MsgStartStop::create(run);
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m_inputMessageQueue.push(message);
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if (getMessageQueueToGUI()) // forward to GUI if any
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{
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MsgStartStop *msgToGUI = MsgStartStop::create(run);
|
|
getMessageQueueToGUI()->push(msgToGUI);
|
|
}
|
|
|
|
return 200;
|
|
}
|
|
|
|
int FileSourceInput::webapiReportGet(
|
|
SWGSDRangel::SWGDeviceReport& response,
|
|
QString& errorMessage)
|
|
{
|
|
(void) errorMessage;
|
|
response.setFileSourceReport(new SWGSDRangel::SWGFileSourceReport());
|
|
response.getFileSourceReport()->init();
|
|
webapiFormatDeviceReport(response);
|
|
return 200;
|
|
}
|
|
|
|
void FileSourceInput::webapiFormatDeviceSettings(SWGSDRangel::SWGDeviceSettings& response, const FileSourceSettings& settings)
|
|
{
|
|
response.getFileSourceSettings()->setFileName(new QString(settings.m_fileName));
|
|
response.getFileSourceSettings()->setAccelerationFactor(settings.m_accelerationFactor);
|
|
response.getFileSourceSettings()->setLoop(settings.m_loop ? 1 : 0);
|
|
|
|
response.getFileSourceSettings()->setUseReverseApi(settings.m_useReverseAPI ? 1 : 0);
|
|
|
|
if (response.getFileSourceSettings()->getReverseApiAddress()) {
|
|
*response.getFileSourceSettings()->getReverseApiAddress() = settings.m_reverseAPIAddress;
|
|
} else {
|
|
response.getFileSourceSettings()->setReverseApiAddress(new QString(settings.m_reverseAPIAddress));
|
|
}
|
|
|
|
response.getFileSourceSettings()->setReverseApiPort(settings.m_reverseAPIPort);
|
|
response.getFileSourceSettings()->setReverseApiDeviceIndex(settings.m_reverseAPIDeviceIndex);
|
|
}
|
|
|
|
void FileSourceInput::webapiFormatDeviceReport(SWGSDRangel::SWGDeviceReport& response)
|
|
{
|
|
qint64 t_sec = 0;
|
|
qint64 t_msec = 0;
|
|
quint64 samplesCount = 0;
|
|
|
|
if (m_fileSourceThread) {
|
|
samplesCount = m_fileSourceThread->getSamplesCount();
|
|
}
|
|
|
|
if (m_sampleRate > 0)
|
|
{
|
|
t_sec = samplesCount / m_sampleRate;
|
|
t_msec = (samplesCount - (t_sec * m_sampleRate)) * 1000 / m_sampleRate;
|
|
}
|
|
|
|
QTime t(0, 0, 0, 0);
|
|
t = t.addSecs(t_sec);
|
|
t = t.addMSecs(t_msec);
|
|
response.getFileSourceReport()->setElapsedTime(new QString(t.toString("HH:mm:ss.zzz")));
|
|
|
|
qint64 startingTimeStampMsec = m_startingTimeStamp * 1000LL;
|
|
QDateTime dt = QDateTime::fromMSecsSinceEpoch(startingTimeStampMsec);
|
|
dt = dt.addSecs(t_sec);
|
|
dt = dt.addMSecs(t_msec);
|
|
response.getFileSourceReport()->setAbsoluteTime(new QString(dt.toString("yyyy-MM-dd HH:mm:ss.zzz")));
|
|
|
|
QTime recordLength(0, 0, 0, 0);
|
|
recordLength = recordLength.addSecs(m_recordLength);
|
|
response.getFileSourceReport()->setDurationTime(new QString(recordLength.toString("HH:mm:ss")));
|
|
|
|
response.getFileSourceReport()->setFileName(new QString(m_fileName));
|
|
response.getFileSourceReport()->setSampleRate(m_sampleRate);
|
|
response.getFileSourceReport()->setSampleSize(m_sampleSize);
|
|
}
|
|
|
|
void FileSourceInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys, const FileSourceSettings& settings, bool force)
|
|
{
|
|
SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
|
|
swgDeviceSettings->setTx(0);
|
|
swgDeviceSettings->setDeviceHwType(new QString("FileSource"));
|
|
swgDeviceSettings->setFileSourceSettings(new SWGSDRangel::SWGFileSourceSettings());
|
|
SWGSDRangel::SWGFileSourceSettings *swgFileSourceSettings = swgDeviceSettings->getFileSourceSettings();
|
|
|
|
// transfer data that has been modified. When force is on transfer all data except reverse API data
|
|
|
|
if (deviceSettingsKeys.contains("accelerationFactor") || force) {
|
|
swgFileSourceSettings->setAccelerationFactor(settings.m_accelerationFactor);
|
|
}
|
|
if (deviceSettingsKeys.contains("loop") || force) {
|
|
swgFileSourceSettings->setLoop(settings.m_loop);
|
|
}
|
|
if (deviceSettingsKeys.contains("fileName") || force) {
|
|
swgFileSourceSettings->setFileName(new QString(settings.m_fileName));
|
|
}
|
|
|
|
QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/settings")
|
|
.arg(settings.m_reverseAPIAddress)
|
|
.arg(settings.m_reverseAPIPort)
|
|
.arg(settings.m_reverseAPIDeviceIndex);
|
|
m_networkRequest.setUrl(QUrl(deviceSettingsURL));
|
|
m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
|
|
|
|
QBuffer *buffer=new QBuffer();
|
|
buffer->open((QBuffer::ReadWrite));
|
|
buffer->write(swgDeviceSettings->asJson().toUtf8());
|
|
buffer->seek(0);
|
|
|
|
// Always use PATCH to avoid passing reverse API settings
|
|
m_networkManager->sendCustomRequest(m_networkRequest, "PATCH", buffer);
|
|
|
|
delete swgDeviceSettings;
|
|
}
|
|
|
|
void FileSourceInput::webapiReverseSendStartStop(bool start)
|
|
{
|
|
QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
|
|
.arg(m_settings.m_reverseAPIAddress)
|
|
.arg(m_settings.m_reverseAPIPort)
|
|
.arg(m_settings.m_reverseAPIDeviceIndex);
|
|
m_networkRequest.setUrl(QUrl(deviceSettingsURL));
|
|
|
|
if (start) {
|
|
m_networkManager->sendCustomRequest(m_networkRequest, "POST");
|
|
} else {
|
|
m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
|
|
}
|
|
}
|
|
|
|
void FileSourceInput::networkManagerFinished(QNetworkReply *reply)
|
|
{
|
|
QNetworkReply::NetworkError replyError = reply->error();
|
|
|
|
if (replyError)
|
|
{
|
|
qWarning() << "FileSourceInput::networkManagerFinished:"
|
|
<< " error(" << (int) replyError
|
|
<< "): " << replyError
|
|
<< ": " << reply->errorString();
|
|
return;
|
|
}
|
|
|
|
QString answer = reply->readAll();
|
|
answer.chop(1); // remove last \n
|
|
qDebug("FileSourceInput::networkManagerFinished: reply:\n%s", answer.toStdString().c_str());
|
|
}
|