kopia lustrzana https://github.com/f4exb/sdrangel
289 wiersze
8.0 KiB
C++
289 wiersze
8.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019 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 "filesourcesource.h"
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#include "filesourcereport.h"
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#if (defined _WIN32_) || (defined _MSC_VER)
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#include "windows_time.h"
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#include <stdint.h>
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#else
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#include <sys/time.h>
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#include <unistd.h>
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#endif
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#include <QDebug>
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#include "dsp/dspcommands.h"
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#include "dsp/devicesamplesink.h"
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#include "dsp/hbfilterchainconverter.h"
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#include "dsp/filerecord.h"
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#include "util/db.h"
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FileSourceSource::FileSourceSource() :
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m_fileName("..."),
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m_sampleSize(0),
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m_centerFrequency(0),
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m_frequencyOffset(0),
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m_fileSampleRate(0),
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m_samplesCount(0),
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m_sampleRate(0),
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m_deviceSampleRate(0),
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m_recordLength(0),
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m_startingTimeStamp(0),
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m_running(false),
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m_guiMessageQueue(nullptr)
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{
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m_linearGain = 1.0f;
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m_magsq = 0.0f;
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m_magsqSum = 0.0f;
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m_magsqPeak = 0.0f;
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m_magsqCount = 0;
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}
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FileSourceSource::~FileSourceSource()
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{
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}
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void FileSourceSource::pull(SampleVector::iterator begin, unsigned int nbSamples)
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{
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std::for_each(
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begin,
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begin + nbSamples,
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[this](Sample& s) {
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pullOne(s);
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}
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);
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}
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void FileSourceSource::pullOne(Sample& sample)
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{
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Real re;
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Real im;
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struct Sample16
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{
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int16_t real;
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int16_t imag;
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};
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struct Sample24
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{
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int32_t real;
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int32_t imag;
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};
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if (!m_running)
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{
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re = 0;
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im = 0;
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}
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else if (m_sampleSize == 16)
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{
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Sample16 sample16;
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m_ifstream.read(reinterpret_cast<char*>(&sample16), sizeof(Sample16));
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if (m_ifstream.eof()) {
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handleEOF();
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} else {
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m_samplesCount++;
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}
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// scale to +/-1.0
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re = (sample16.real * m_linearGain) / 32760.0f;
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im = (sample16.imag * m_linearGain) / 32760.0f;
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}
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else if (m_sampleSize == 24)
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{
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Sample24 sample24;
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m_ifstream.read(reinterpret_cast<char*>(&sample24), sizeof(Sample24));
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if (m_ifstream.eof()) {
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handleEOF();
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} else {
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m_samplesCount++;
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}
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// scale to +/-1.0
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re = (sample24.real * m_linearGain) / 8388608.0f;
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im = (sample24.imag * m_linearGain) / 8388608.0f;
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}
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else
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{
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re = 0;
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im = 0;
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}
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if (SDR_TX_SAMP_SZ == 16)
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{
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sample.setReal(re * 32768.0f);
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sample.setImag(im * 32768.0f);
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}
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else if (SDR_TX_SAMP_SZ == 24)
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{
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sample.setReal(re * 8388608.0f);
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sample.setImag(im * 8388608.0f);
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}
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else
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{
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sample.setReal(0);
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sample.setImag(0);
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}
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Real magsq = re*re + im*im;
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m_movingAverage(magsq);
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m_magsq = m_movingAverage.asDouble();
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m_magsqSum += magsq;
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if (magsq > m_magsqPeak) {
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m_magsqPeak = magsq;
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}
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m_magsqCount++;
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}
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void FileSourceSource::openFileStream(const QString& fileName)
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{
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m_fileName = fileName;
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if (m_ifstream.is_open()) {
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m_ifstream.close();
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}
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#ifdef Q_OS_WIN
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m_ifstream.open(m_fileName.toStdWString().c_str(), std::ios::binary | std::ios::ate);
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#else
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m_ifstream.open(m_fileName.toStdString().c_str(), std::ios::binary | std::ios::ate);
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#endif
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quint64 fileSize = m_ifstream.tellg();
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m_samplesCount = 0;
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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_fileSampleRate = 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("FileSourceSource::openFileStream: CRC32 OK for header: %s", qPrintable(crcHex));
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m_recordLength = (fileSize - sizeof(FileRecord::Header)) / ((m_sampleSize == 24 ? 8 : 4) * m_fileSampleRate);
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}
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else
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{
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qCritical("FileSourceSource::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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{
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FileSourceReport::MsgReportHeaderCRC *report = FileSourceReport::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() << "FileSourceSource::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_fileSampleRate << " S/s"
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<< " center frequency: " << m_centerFrequency << " Hz"
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<< " sample size: " << m_sampleSize << " bits"
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<< " starting TS: " << m_startingTimeStamp << "s";
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if (getMessageQueueToGUI())
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{
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FileSourceReport::MsgReportFileSourceStreamData *report = FileSourceReport::MsgReportFileSourceStreamData::create(m_fileSampleRate,
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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 FileSourceSource::seekFileStream(int seekMillis)
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{
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if ((m_ifstream.is_open()) && !m_running)
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{
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quint64 seekPoint = ((m_recordLength * seekMillis) / 1000) * m_fileSampleRate;
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m_samplesCount = seekPoint;
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seekPoint *= (m_sampleSize == 24 ? 8 : 4); // + sizeof(FileRecord::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 FileSourceSource::handleEOF()
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{
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if (!m_ifstream.is_open()) {
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return;
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}
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if (getMessageQueueToGUI())
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{
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FileSourceReport::MsgReportFileSourceStreamTiming *report = FileSourceReport::MsgReportFileSourceStreamTiming::create(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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m_ifstream.clear();
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m_ifstream.seekg(0, std::ios::beg);
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m_samplesCount = 0;
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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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FileSourceReport::MsgPlayPause *report = FileSourceReport::MsgPlayPause::create(false);
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getMessageQueueToGUI()->push(report);
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}
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}
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}
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void FileSourceSource::applySettings(const FileSourceSettings& settings, bool force)
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{
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qDebug() << "FileSourceSource::applySettings:"
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<< "m_fileName:" << settings.m_fileName
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<< "m_loop:" << settings.m_loop
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<< "m_gainDB:" << settings.m_gainDB
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<< "m_log2Interp:" << settings.m_log2Interp
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<< "m_filterChainHash:" << settings.m_filterChainHash
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<< " force: " << force;
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if ((m_settings.m_gainDB != settings.m_gainDB) || force) {
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m_linearGain = CalcDb::powerFromdB(settings.m_gainDB/2.0); // Divide by two for power gain to voltage gain conversion
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}
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m_settings = settings;
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}
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