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sdrangel/sdrbase/dsp/wavfilerecord.cpp

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015-2018 Edouard Griffiths, F4EXB //
// Copyright (C) 2021 Jon Beniston, M7RCE //
// //
// 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 <cstddef>
#include <cstring>
#include <QDebug>
#include <QDateTime>
#include <QRegExp>
#include "dsp/dspcommands.h"
#include "util/simpleserializer.h"
#include "util/message.h"
#include "wavfilerecord.h"
WavFileRecord::WavFileRecord(quint32 sampleRate, quint64 centerFrequency) :
FileRecordInterface(),
m_fileBase("test"),
m_sampleRate(sampleRate),
m_centerFrequency(centerFrequency),
m_recordOn(false),
m_recordStart(false),
m_byteCount(0),
m_msShift(0),
m_nbChannels(2)
{
setObjectName("WavFileRecord");
}
WavFileRecord::WavFileRecord(const QString& fileBase) :
FileRecordInterface(),
m_fileBase(fileBase),
m_sampleRate(0),
m_centerFrequency(0),
m_recordOn(false),
m_recordStart(false),
m_byteCount(0),
m_nbChannels(2)
{
setObjectName("WavFileRecord");
}
WavFileRecord::~WavFileRecord()
{
stopRecording();
}
void WavFileRecord::setFileName(const QString& fileBase)
{
if (!m_recordOn)
{
m_fileBase = fileBase;
}
}
void WavFileRecord::genUniqueFileName(uint deviceUID, int istream)
{
if (istream < 0) {
setFileName(QString("rec%1_%2.wav").arg(deviceUID).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz")));
} else {
setFileName(QString("rec%1_%2_%3.wav").arg(deviceUID).arg(istream).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz")));
}
}
void WavFileRecord::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly)
{
(void) positiveOnly;
if (!m_recordOn) {
return;
}
if (begin < end) // if there is something to put out
{
if (m_recordStart)
{
writeHeader();
m_recordStart = false;
}
if (SDR_RX_SAMP_SZ == 16)
{
m_sampleFile.write(reinterpret_cast<const char*>(&*(begin)), (end - begin)*sizeof(Sample));
m_byteCount += end - begin;
}
else
{
for (SampleVector::const_iterator it = begin; it != end; ++it)
{
// Convert from 24-bit to 16-bit
int16_t samples[2];
samples[0] = it->real() >> 8;
samples[1] = it->imag() >> 8;
m_sampleFile.write(reinterpret_cast<const char*>(&samples), 4);
m_byteCount += 4;
}
}
}
}
void WavFileRecord::write(qint16 lSample, qint16 rSample)
{
if (m_recordStart)
{
writeHeader();
m_recordStart = false;
}
m_sampleFile.write(reinterpret_cast<const char*>(&lSample), 2);
m_sampleFile.write(reinterpret_cast<const char*>(&rSample), 2);
m_byteCount += 4;
}
void WavFileRecord::writeMono(qint16 sample)
{
if (m_recordStart)
{
writeHeader();
m_recordStart = false;
}
m_sampleFile.write(reinterpret_cast<const char*>(&sample), 2);
m_byteCount += 2;
}
void WavFileRecord::start()
{
}
void WavFileRecord::stop()
{
stopRecording();
}
bool WavFileRecord::startRecording()
{
if (m_recordOn) {
stopRecording();
}
if (!m_sampleFile.is_open())
{
qDebug() << "WavFileRecord::startRecording";
m_currentFileName = QString("%1.%2.wav").arg(m_fileBase).arg(QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH_mm_ss_zzz"));
m_sampleFile.open(m_currentFileName.toStdString().c_str(), std::ios::binary);
if (!m_sampleFile.is_open())
{
qWarning() << "WavFileRecord::startRecording: failed to open file: " << m_currentFileName;
return false;
}
m_recordOn = true;
m_recordStart = true;
m_byteCount = 0;
}
return true;
}
bool WavFileRecord::stopRecording()
{
if (m_sampleFile.is_open())
{
qDebug() << "WavFileRecord::stopRecording";
// Fix up chunk sizes
long fileSize = m_sampleFile.tellp();
m_sampleFile.seekp(offsetof(Header, m_riffHeader.m_size));
qint32 size = (fileSize - 8);
m_sampleFile.write((char *)&size, 4);
m_sampleFile.seekp(offsetof(Header, m_dataHeader.m_size));
size = fileSize - sizeof(Header);
m_sampleFile.write((char *)&size, 4);
m_sampleFile.close();
m_recordOn = false;
m_recordStart = false;
if (m_sampleFile.bad())
{
qWarning() << "WavFileRecord::stopRecording: an error occurred while writing to " << m_currentFileName;
return false;
}
}
return true;
}
bool WavFileRecord::handleMessage(const Message& message)
{
if (DSPSignalNotification::match(message))
{
DSPSignalNotification& notif = (DSPSignalNotification&) message;
int sampleRate = notif.getSampleRate();
if ((sampleRate != (int)m_sampleRate) && m_recordOn) {
qDebug() << "WavFileRecord::handleMessage: sample rate has changed. Creating a new .wav file";
stopRecording();
m_recordOn = true;
}
m_sampleRate = sampleRate;
m_centerFrequency = notif.getCenterFrequency();
qDebug() << "WavFileRecord::handleMessage: DSPSignalNotification: m_inputSampleRate: " << m_sampleRate
<< " m_centerFrequency: " << m_centerFrequency;
if (m_recordOn) {
startRecording();
}
return true;
}
else
{
return false;
}
}
void WavFileRecord::writeHeader()
{
Header header;
header.m_riffHeader.m_id[0] = 'R';
header.m_riffHeader.m_id[1] = 'I';
header.m_riffHeader.m_id[2] = 'F';
header.m_riffHeader.m_id[3] = 'F';
header.m_riffHeader.m_size = 0; // Needs to be fixed on close
header.m_type[0] = 'W';
header.m_type[1] = 'A';
header.m_type[2] = 'V';
header.m_type[3] = 'E';
header.m_fmtHeader.m_id[0] = 'f';
header.m_fmtHeader.m_id[1] = 'm';
header.m_fmtHeader.m_id[2] = 't';
header.m_fmtHeader.m_id[3] = ' ';
header.m_fmtHeader.m_size = 16;
header.m_audioFormat = 1; // Linear PCM
header.m_numChannels = m_nbChannels; // 2 for I/Q
header.m_sampleRate = m_sampleRate;
// We always use 16-bits regardless of SDR_RX_SAMP_SZ
header.m_byteRate = m_sampleRate * m_nbChannels * 16 / 8;
header.m_blockAlign = m_nbChannels * 16 / 8;
header.m_bitsPerSample = 16;
header.m_auxiHeader.m_id[0] = 'a';
header.m_auxiHeader.m_id[1] = 'u';
header.m_auxiHeader.m_id[2] = 'x';
header.m_auxiHeader.m_id[3] = 'i';
header.m_auxiHeader.m_size = sizeof(Auxi);
QDateTime now = QDateTime::currentDateTime();
header.m_auxi.m_startTime.m_year = now.date().year();
header.m_auxi.m_startTime.m_month = now.date().month();
header.m_auxi.m_startTime.m_dayOfWeek = now.date().dayOfWeek();
header.m_auxi.m_startTime.m_day = now.date().day();
header.m_auxi.m_startTime.m_hour = now.time().hour();
header.m_auxi.m_startTime.m_minute = now.time().minute();
header.m_auxi.m_startTime.m_second = now.time().second();
header.m_auxi.m_startTime.m_milliseconds = now.time().msec();
header.m_auxi.m_stopTime.m_year = 0; // Needs to be fixed on close
header.m_auxi.m_stopTime.m_month = 0;
header.m_auxi.m_stopTime.m_dayOfWeek = 0;
header.m_auxi.m_stopTime.m_day = 0;
header.m_auxi.m_stopTime.m_hour = 0;
header.m_auxi.m_stopTime.m_minute = 0;
header.m_auxi.m_stopTime.m_second = 0;
header.m_auxi.m_stopTime.m_milliseconds = 0;
header.m_auxi.m_centerFreq = m_centerFrequency;
header.m_auxi.m_adFrequency = m_sampleRate;
header.m_auxi.m_ifFrequency = 0;
header.m_auxi.m_bandwidth = 0;
header.m_auxi.m_iqOffset = 0;
header.m_auxi.m_unused2 = 0;
header.m_auxi.m_unused3 = 0;
header.m_auxi.m_unused4 = 0;
header.m_auxi.m_unused5 = 0;
memset(&header.m_auxi.m_nextFilename[0], 0, 96);
header.m_dataHeader.m_size = sizeof(Auxi);
header.m_dataHeader.m_id[0] = 'd';
header.m_dataHeader.m_id[1] = 'a';
header.m_dataHeader.m_id[2] = 't';
header.m_dataHeader.m_id[3] = 'a';
header.m_dataHeader.m_size = 0; // Needs to be fixed on close
writeHeader(m_sampleFile, header);
}
bool WavFileRecord::readHeader(std::ifstream& sampleFile, Header& header)
{
memset(&header, 0, sizeof(Header));
sampleFile.read((char *) &header, 8+4+8+16);
if (!sampleFile)
{
qDebug() << "WavFileRecord::readHeader: End of file without reading header";
return false;
}
if (strncmp(header.m_riffHeader.m_id, "RIFF", 4))
{
qDebug() << "WavFileRecord::readHeader: No RIFF header";
return false;
}
if (strncmp(header.m_type, "WAVE", 4))
{
qDebug() << "WavFileRecord::readHeader: No WAVE header";
return false;
}
if (strncmp(header.m_fmtHeader.m_id, "fmt ", 4))
{
qDebug() << "WavFileRecord::readHeader: No fmt header";
return false;
}
if (header.m_audioFormat != 1)
{
qDebug() << "WavFileRecord::readHeader: Audio format is not PCM";
return false;
}
if (header.m_numChannels != 2)
{
qDebug() << "WavFileRecord::readHeader: Number of channels is not 2";
return false;
}
// FileInputWorker can't handle other bits sizes
if (header.m_bitsPerSample != 16)
{
qDebug() << "WavFileRecord::readHeader: Number of bits per sample is not 16";
return false;
}
Chunk chunkHeader;
bool gotData = false;
while (!gotData)
{
sampleFile.read((char *) &chunkHeader, 8);
if (!sampleFile)
{
qDebug() << "WavFileRecord::readHeader: End of file without reading data header";
return false;
}
if (!strncmp(chunkHeader.m_id, "auxi", 4))
{
memcpy(&header.m_auxiHeader, &chunkHeader, sizeof(Chunk));
sampleFile.read((char *) &header.m_auxi, sizeof(Auxi));
if (!sampleFile)
return false;
}
else if (!strncmp(chunkHeader.m_id, "data", 4))
{
memcpy(&header.m_dataHeader, &chunkHeader, sizeof(Chunk));
gotData = true;
}
}
return true;
}
void WavFileRecord::writeHeader(std::ofstream& sampleFile, Header& header)
{
sampleFile.write((const char *) &header, sizeof(Header));
}
bool WavFileRecord::getCenterFrequency(QString fileName, quint64& centerFrequency)
{
// Attempt to extract center frequency from filename
QRegExp freqkRE("(([0-9]+)kHz)");
QRegExp freqRE("(([0-9]+)Hz)");
if (freqkRE.indexIn(fileName))
{
centerFrequency = freqkRE.capturedTexts()[2].toLongLong() * 1000LL;
return true;
}
else if (freqRE.indexIn(fileName))
{
centerFrequency = freqRE.capturedTexts()[2].toLongLong();
return true;
}
return false;
}
bool WavFileRecord::getStartTime(QString fileName, QDateTime& startTime)
{
// Attempt to extract start time from filename
QRegExp dateTimeRE("([12][0-9][0-9][0-9]).?([01][0-9]).?([0-3][0-9]).?([0-2][0-9]).?([0-5][0-9]).?([0-5][0-9])");
if (dateTimeRE.indexIn(fileName) != -1)
{
startTime = QDateTime(QDate(
dateTimeRE.capturedTexts()[1].toInt(),
dateTimeRE.capturedTexts()[2].toInt(),
dateTimeRE.capturedTexts()[3].toInt()),
QTime(
dateTimeRE.capturedTexts()[4].toInt(),
dateTimeRE.capturedTexts()[5].toInt(),
dateTimeRE.capturedTexts()[6].toInt()));
return true;
}
return false;
}
QDateTime WavFileRecord::Header::getStartTime() const
{
return QDateTime(QDate(m_auxi.m_startTime.m_year,
m_auxi.m_startTime.m_month,
m_auxi.m_startTime.m_day),
QTime(m_auxi.m_startTime.m_hour,
m_auxi.m_startTime.m_minute,
m_auxi.m_startTime.m_second,
m_auxi.m_startTime.m_milliseconds));
}
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